h264.c 317 KB
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/*
 * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
 *
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 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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/**
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 * @file libavcodec/h264.c
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 * H.264 / AVC / MPEG4 part10 codec.
 * @author Michael Niedermayer <michaelni@gmx.at>
 */

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#include "internal.h"
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#include "dsputil.h"
#include "avcodec.h"
#include "mpegvideo.h"
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#include "h264.h"
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#include "h264data.h"
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#include "h264_parser.h"
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#include "golomb.h"
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#include "mathops.h"
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#include "rectangle.h"
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#include "vdpau_internal.h"
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#include "cabac.h"
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#if ARCH_X86
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#include "x86/h264_i386.h"
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#endif
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//#undef NDEBUG
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#include <assert.h>

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/**
 * Value of Picture.reference when Picture is not a reference picture, but
 * is held for delayed output.
 */
#define DELAYED_PIC_REF 4

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static VLC coeff_token_vlc[4];
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static VLC_TYPE coeff_token_vlc_tables[520+332+280+256][2];
static const int coeff_token_vlc_tables_size[4]={520,332,280,256};

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static VLC chroma_dc_coeff_token_vlc;
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static VLC_TYPE chroma_dc_coeff_token_vlc_table[256][2];
static const int chroma_dc_coeff_token_vlc_table_size = 256;
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static VLC total_zeros_vlc[15];
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static VLC_TYPE total_zeros_vlc_tables[15][512][2];
static const int total_zeros_vlc_tables_size = 512;

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static VLC chroma_dc_total_zeros_vlc[3];
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static VLC_TYPE chroma_dc_total_zeros_vlc_tables[3][8][2];
static const int chroma_dc_total_zeros_vlc_tables_size = 8;
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static VLC run_vlc[6];
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static VLC_TYPE run_vlc_tables[6][8][2];
static const int run_vlc_tables_size = 8;

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static VLC run7_vlc;
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static VLC_TYPE run7_vlc_table[96][2];
static const int run7_vlc_table_size = 96;
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static void svq3_luma_dc_dequant_idct_c(DCTELEM *block, int qp);
static void svq3_add_idct_c(uint8_t *dst, DCTELEM *block, int stride, int qp, int dc);
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static void filter_mb( H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize);
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static void filter_mb_fast( H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize);
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static Picture * remove_long(H264Context *h, int i, int ref_mask);
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static av_always_inline uint32_t pack16to32(int a, int b){
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#if HAVE_BIGENDIAN
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   return (b&0xFFFF) + (a<<16);
#else
   return (a&0xFFFF) + (b<<16);
#endif
}

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static const uint8_t rem6[52]={
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0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3,
};

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static const uint8_t div6[52]={
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0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8,
};

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static const uint8_t left_block_options[4][8]={
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    {0,1,2,3,7,10,8,11},
    {2,2,3,3,8,11,8,11},
    {0,0,1,1,7,10,7,10},
    {0,2,0,2,7,10,7,10}
};
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#define LEVEL_TAB_BITS 8
static int8_t cavlc_level_tab[7][1<<LEVEL_TAB_BITS][2];

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static void fill_caches(H264Context *h, int mb_type, int for_deblock){
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    MpegEncContext * const s = &h->s;
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    const int mb_xy= h->mb_xy;
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    int topleft_xy, top_xy, topright_xy, left_xy[2];
    int topleft_type, top_type, topright_type, left_type[2];
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    const uint8_t * left_block;
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    int topleft_partition= -1;
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    int i;

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    top_xy     = mb_xy  - (s->mb_stride << FIELD_PICTURE);

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    //FIXME deblocking could skip the intra and nnz parts.
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    if(for_deblock && (h->slice_num == 1 || h->slice_table[mb_xy] == h->slice_table[top_xy]) && !FRAME_MBAFF)
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        return;

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    /* Wow, what a mess, why didn't they simplify the interlacing & intra
     * stuff, I can't imagine that these complex rules are worth it. */
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    topleft_xy = top_xy - 1;
    topright_xy= top_xy + 1;
    left_xy[1] = left_xy[0] = mb_xy-1;
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    left_block = left_block_options[0];
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    if(FRAME_MBAFF){
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        const int pair_xy          = s->mb_x     + (s->mb_y & ~1)*s->mb_stride;
        const int top_pair_xy      = pair_xy     - s->mb_stride;
        const int topleft_pair_xy  = top_pair_xy - 1;
        const int topright_pair_xy = top_pair_xy + 1;
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        const int topleft_mb_field_flag  = IS_INTERLACED(s->current_picture.mb_type[topleft_pair_xy]);
        const int top_mb_field_flag      = IS_INTERLACED(s->current_picture.mb_type[top_pair_xy]);
        const int topright_mb_field_flag = IS_INTERLACED(s->current_picture.mb_type[topright_pair_xy]);
        const int left_mb_field_flag     = IS_INTERLACED(s->current_picture.mb_type[pair_xy-1]);
        const int curr_mb_field_flag     = IS_INTERLACED(mb_type);
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        const int bottom = (s->mb_y & 1);
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        tprintf(s->avctx, "fill_caches: curr_mb_field_flag:%d, left_mb_field_flag:%d, topleft_mb_field_flag:%d, top_mb_field_flag:%d, topright_mb_field_flag:%d\n", curr_mb_field_flag, left_mb_field_flag, topleft_mb_field_flag, top_mb_field_flag, topright_mb_field_flag);
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        if (curr_mb_field_flag && (bottom || top_mb_field_flag)){
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            top_xy -= s->mb_stride;
        }
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        if (curr_mb_field_flag && (bottom || topleft_mb_field_flag)){
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            topleft_xy -= s->mb_stride;
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        } else if(bottom && !curr_mb_field_flag && left_mb_field_flag) {
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            topleft_xy += s->mb_stride;
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            // take top left mv from the middle of the mb, as opposed to all other modes which use the bottom right partition
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            topleft_partition = 0;
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        }
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        if (curr_mb_field_flag && (bottom || topright_mb_field_flag)){
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            topright_xy -= s->mb_stride;
        }
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        if (left_mb_field_flag != curr_mb_field_flag) {
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            left_xy[1] = left_xy[0] = pair_xy - 1;
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            if (curr_mb_field_flag) {
                left_xy[1] += s->mb_stride;
                left_block = left_block_options[3];
            } else {
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                left_block= left_block_options[2 - bottom];
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            }
        }
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    }

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    h->top_mb_xy = top_xy;
    h->left_mb_xy[0] = left_xy[0];
    h->left_mb_xy[1] = left_xy[1];
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    if(for_deblock){
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        topleft_type = 0;
        topright_type = 0;
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        top_type     = h->slice_table[top_xy     ] < 0xFFFF ? s->current_picture.mb_type[top_xy]     : 0;
        left_type[0] = h->slice_table[left_xy[0] ] < 0xFFFF ? s->current_picture.mb_type[left_xy[0]] : 0;
        left_type[1] = h->slice_table[left_xy[1] ] < 0xFFFF ? s->current_picture.mb_type[left_xy[1]] : 0;
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        if(MB_MBAFF && !IS_INTRA(mb_type)){
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            int list;
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            for(list=0; list<h->list_count; list++){
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                //These values where changed for ease of performing MC, we need to change them back
                //FIXME maybe we can make MC and loop filter use the same values or prevent
                //the MC code from changing ref_cache and rather use a temporary array.
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                if(USES_LIST(mb_type,list)){
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                    int8_t *ref = &s->current_picture.ref_index[list][h->mb2b8_xy[mb_xy]];
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                    *(uint32_t*)&h->ref_cache[list][scan8[ 0]] =
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                    *(uint32_t*)&h->ref_cache[list][scan8[ 2]] = (pack16to32(ref[0],ref[1])&0x00FF00FF)*0x0101;
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                    ref += h->b8_stride;
                    *(uint32_t*)&h->ref_cache[list][scan8[ 8]] =
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                    *(uint32_t*)&h->ref_cache[list][scan8[10]] = (pack16to32(ref[0],ref[1])&0x00FF00FF)*0x0101;
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                }
            }
        }
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    }else{
        topleft_type = h->slice_table[topleft_xy ] == h->slice_num ? s->current_picture.mb_type[topleft_xy] : 0;
        top_type     = h->slice_table[top_xy     ] == h->slice_num ? s->current_picture.mb_type[top_xy]     : 0;
        topright_type= h->slice_table[topright_xy] == h->slice_num ? s->current_picture.mb_type[topright_xy]: 0;
        left_type[0] = h->slice_table[left_xy[0] ] == h->slice_num ? s->current_picture.mb_type[left_xy[0]] : 0;
        left_type[1] = h->slice_table[left_xy[1] ] == h->slice_num ? s->current_picture.mb_type[left_xy[1]] : 0;
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    if(IS_INTRA(mb_type)){
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        int type_mask= h->pps.constrained_intra_pred ? IS_INTRA(-1) : -1;
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        h->topleft_samples_available=
        h->top_samples_available=
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        h->left_samples_available= 0xFFFF;
        h->topright_samples_available= 0xEEEA;

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        if(!(top_type & type_mask)){
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            h->topleft_samples_available= 0xB3FF;
            h->top_samples_available= 0x33FF;
            h->topright_samples_available= 0x26EA;
        }
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        if(IS_INTERLACED(mb_type) != IS_INTERLACED(left_type[0])){
            if(IS_INTERLACED(mb_type)){
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                if(!(left_type[0] & type_mask)){
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                    h->topleft_samples_available&= 0xDFFF;
                    h->left_samples_available&= 0x5FFF;
                }
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                if(!(left_type[1] & type_mask)){
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                    h->topleft_samples_available&= 0xFF5F;
                    h->left_samples_available&= 0xFF5F;
                }
            }else{
                int left_typei = h->slice_table[left_xy[0] + s->mb_stride ] == h->slice_num
                                ? s->current_picture.mb_type[left_xy[0] + s->mb_stride] : 0;
                assert(left_xy[0] == left_xy[1]);
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                if(!((left_typei & type_mask) && (left_type[0] & type_mask))){
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                    h->topleft_samples_available&= 0xDF5F;
                    h->left_samples_available&= 0x5F5F;
                }
            }
        }else{
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            if(!(left_type[0] & type_mask)){
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                h->topleft_samples_available&= 0xDF5F;
                h->left_samples_available&= 0x5F5F;
            }
        }
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        if(!(topleft_type & type_mask))
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            h->topleft_samples_available&= 0x7FFF;
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        if(!(topright_type & type_mask))
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            h->topright_samples_available&= 0xFBFF;
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        if(IS_INTRA4x4(mb_type)){
            if(IS_INTRA4x4(top_type)){
                h->intra4x4_pred_mode_cache[4+8*0]= h->intra4x4_pred_mode[top_xy][4];
                h->intra4x4_pred_mode_cache[5+8*0]= h->intra4x4_pred_mode[top_xy][5];
                h->intra4x4_pred_mode_cache[6+8*0]= h->intra4x4_pred_mode[top_xy][6];
                h->intra4x4_pred_mode_cache[7+8*0]= h->intra4x4_pred_mode[top_xy][3];
            }else{
                int pred;
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                if(!(top_type & type_mask))
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                    pred= -1;
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                else{
                    pred= 2;
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                }
                h->intra4x4_pred_mode_cache[4+8*0]=
                h->intra4x4_pred_mode_cache[5+8*0]=
                h->intra4x4_pred_mode_cache[6+8*0]=
                h->intra4x4_pred_mode_cache[7+8*0]= pred;
            }
            for(i=0; i<2; i++){
                if(IS_INTRA4x4(left_type[i])){
                    h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[0+2*i]];
                    h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[1+2*i]];
                }else{
                    int pred;
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                    if(!(left_type[i] & type_mask))
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                        pred= -1;
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                    else{
                        pred= 2;
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                    }
                    h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]=
                    h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= pred;
                }
            }
        }
    }
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    }
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/*
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0 . T T. T T T T
1 L . .L . . . .
2 L . .L . . . .
3 . T TL . . . .
4 L . .L . . . .
5 L . .. . . . .
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*/
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//FIXME constraint_intra_pred & partitioning & nnz (let us hope this is just a typo in the spec)
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    if(top_type){
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        h->non_zero_count_cache[4+8*0]= h->non_zero_count[top_xy][4];
        h->non_zero_count_cache[5+8*0]= h->non_zero_count[top_xy][5];
        h->non_zero_count_cache[6+8*0]= h->non_zero_count[top_xy][6];
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        h->non_zero_count_cache[7+8*0]= h->non_zero_count[top_xy][3];
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        h->non_zero_count_cache[1+8*0]= h->non_zero_count[top_xy][9];
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        h->non_zero_count_cache[2+8*0]= h->non_zero_count[top_xy][8];
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        h->non_zero_count_cache[1+8*3]= h->non_zero_count[top_xy][12];
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        h->non_zero_count_cache[2+8*3]= h->non_zero_count[top_xy][11];
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    }else{
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        h->non_zero_count_cache[4+8*0]=
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        h->non_zero_count_cache[5+8*0]=
        h->non_zero_count_cache[6+8*0]=
        h->non_zero_count_cache[7+8*0]=
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        h->non_zero_count_cache[1+8*0]=
        h->non_zero_count_cache[2+8*0]=
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        h->non_zero_count_cache[1+8*3]=
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        h->non_zero_count_cache[2+8*3]= h->pps.cabac && !IS_INTRA(mb_type) ? 0 : 64;
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    }
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    for (i=0; i<2; i++) {
        if(left_type[i]){
            h->non_zero_count_cache[3+8*1 + 2*8*i]= h->non_zero_count[left_xy[i]][left_block[0+2*i]];
            h->non_zero_count_cache[3+8*2 + 2*8*i]= h->non_zero_count[left_xy[i]][left_block[1+2*i]];
            h->non_zero_count_cache[0+8*1 +   8*i]= h->non_zero_count[left_xy[i]][left_block[4+2*i]];
            h->non_zero_count_cache[0+8*4 +   8*i]= h->non_zero_count[left_xy[i]][left_block[5+2*i]];
        }else{
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            h->non_zero_count_cache[3+8*1 + 2*8*i]=
            h->non_zero_count_cache[3+8*2 + 2*8*i]=
            h->non_zero_count_cache[0+8*1 +   8*i]=
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            h->non_zero_count_cache[0+8*4 +   8*i]= h->pps.cabac && !IS_INTRA(mb_type) ? 0 : 64;
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        }
    }

    if( h->pps.cabac ) {
        // top_cbp
        if(top_type) {
            h->top_cbp = h->cbp_table[top_xy];
        } else if(IS_INTRA(mb_type)) {
            h->top_cbp = 0x1C0;
        } else {
            h->top_cbp = 0;
        }
        // left_cbp
        if (left_type[0]) {
            h->left_cbp = h->cbp_table[left_xy[0]] & 0x1f0;
        } else if(IS_INTRA(mb_type)) {
            h->left_cbp = 0x1C0;
        } else {
            h->left_cbp = 0;
        }
        if (left_type[0]) {
            h->left_cbp |= ((h->cbp_table[left_xy[0]]>>((left_block[0]&(~1))+1))&0x1) << 1;
        }
        if (left_type[1]) {
            h->left_cbp |= ((h->cbp_table[left_xy[1]]>>((left_block[2]&(~1))+1))&0x1) << 3;
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        }
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    }
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#if 1
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    if(IS_INTER(mb_type) || IS_DIRECT(mb_type)){
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        int list;
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        for(list=0; list<h->list_count; list++){
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            if(!USES_LIST(mb_type, list) && !IS_DIRECT(mb_type) && !h->deblocking_filter){
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                /*if(!h->mv_cache_clean[list]){
                    memset(h->mv_cache [list],  0, 8*5*2*sizeof(int16_t)); //FIXME clean only input? clean at all?
                    memset(h->ref_cache[list], PART_NOT_AVAILABLE, 8*5*sizeof(int8_t));
                    h->mv_cache_clean[list]= 1;
                }*/
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                continue;
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            }
            h->mv_cache_clean[list]= 0;
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            if(USES_LIST(top_type, list)){
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                const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
                const int b8_xy= h->mb2b8_xy[top_xy] + h->b8_stride;
                *(uint32_t*)h->mv_cache[list][scan8[0] + 0 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 0];
                *(uint32_t*)h->mv_cache[list][scan8[0] + 1 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 1];
                *(uint32_t*)h->mv_cache[list][scan8[0] + 2 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 2];
                *(uint32_t*)h->mv_cache[list][scan8[0] + 3 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 3];
                h->ref_cache[list][scan8[0] + 0 - 1*8]=
                h->ref_cache[list][scan8[0] + 1 - 1*8]= s->current_picture.ref_index[list][b8_xy + 0];
                h->ref_cache[list][scan8[0] + 2 - 1*8]=
                h->ref_cache[list][scan8[0] + 3 - 1*8]= s->current_picture.ref_index[list][b8_xy + 1];
            }else{
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                *(uint32_t*)h->mv_cache [list][scan8[0] + 0 - 1*8]=
                *(uint32_t*)h->mv_cache [list][scan8[0] + 1 - 1*8]=
                *(uint32_t*)h->mv_cache [list][scan8[0] + 2 - 1*8]=
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                *(uint32_t*)h->mv_cache [list][scan8[0] + 3 - 1*8]= 0;
                *(uint32_t*)&h->ref_cache[list][scan8[0] + 0 - 1*8]= ((top_type ? LIST_NOT_USED : PART_NOT_AVAILABLE)&0xFF)*0x01010101;
            }

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            for(i=0; i<2; i++){
                int cache_idx = scan8[0] - 1 + i*2*8;
                if(USES_LIST(left_type[i], list)){
                    const int b_xy= h->mb2b_xy[left_xy[i]] + 3;
                    const int b8_xy= h->mb2b8_xy[left_xy[i]] + 1;
                    *(uint32_t*)h->mv_cache[list][cache_idx  ]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[0+i*2]];
                    *(uint32_t*)h->mv_cache[list][cache_idx+8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[1+i*2]];
                    h->ref_cache[list][cache_idx  ]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[0+i*2]>>1)];
                    h->ref_cache[list][cache_idx+8]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[1+i*2]>>1)];
                }else{
                    *(uint32_t*)h->mv_cache [list][cache_idx  ]=
                    *(uint32_t*)h->mv_cache [list][cache_idx+8]= 0;
                    h->ref_cache[list][cache_idx  ]=
                    h->ref_cache[list][cache_idx+8]= left_type[i] ? LIST_NOT_USED : PART_NOT_AVAILABLE;
                }
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            }

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            if(for_deblock || ((IS_DIRECT(mb_type) && !h->direct_spatial_mv_pred) && !FRAME_MBAFF))
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                continue;

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            if(USES_LIST(topleft_type, list)){
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                const int b_xy = h->mb2b_xy[topleft_xy] + 3 + h->b_stride + (topleft_partition & 2*h->b_stride);
                const int b8_xy= h->mb2b8_xy[topleft_xy] + 1 + (topleft_partition & h->b8_stride);
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                *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy];
                h->ref_cache[list][scan8[0] - 1 - 1*8]= s->current_picture.ref_index[list][b8_xy];
            }else{
                *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= 0;
                h->ref_cache[list][scan8[0] - 1 - 1*8]= topleft_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
            }
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            if(USES_LIST(topright_type, list)){
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                const int b_xy= h->mb2b_xy[topright_xy] + 3*h->b_stride;
                const int b8_xy= h->mb2b8_xy[topright_xy] + h->b8_stride;
                *(uint32_t*)h->mv_cache[list][scan8[0] + 4 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy];
                h->ref_cache[list][scan8[0] + 4 - 1*8]= s->current_picture.ref_index[list][b8_xy];
            }else{
                *(uint32_t*)h->mv_cache [list][scan8[0] + 4 - 1*8]= 0;
                h->ref_cache[list][scan8[0] + 4 - 1*8]= topright_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
            }

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            if((IS_SKIP(mb_type) || IS_DIRECT(mb_type)) && !FRAME_MBAFF)
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                continue;
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            h->ref_cache[list][scan8[5 ]+1] =
            h->ref_cache[list][scan8[7 ]+1] =
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            h->ref_cache[list][scan8[13]+1] =  //FIXME remove past 3 (init somewhere else)
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            h->ref_cache[list][scan8[4 ]] =
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            h->ref_cache[list][scan8[12]] = PART_NOT_AVAILABLE;
            *(uint32_t*)h->mv_cache [list][scan8[5 ]+1]=
            *(uint32_t*)h->mv_cache [list][scan8[7 ]+1]=
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            *(uint32_t*)h->mv_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewhere else)
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            *(uint32_t*)h->mv_cache [list][scan8[4 ]]=
            *(uint32_t*)h->mv_cache [list][scan8[12]]= 0;
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            if( h->pps.cabac ) {
                /* XXX beurk, Load mvd */
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                if(USES_LIST(top_type, list)){
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                    const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
                    *(uint32_t*)h->mvd_cache[list][scan8[0] + 0 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 0];
                    *(uint32_t*)h->mvd_cache[list][scan8[0] + 1 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 1];
                    *(uint32_t*)h->mvd_cache[list][scan8[0] + 2 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 2];
                    *(uint32_t*)h->mvd_cache[list][scan8[0] + 3 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 3];
                }else{
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                    *(uint32_t*)h->mvd_cache [list][scan8[0] + 0 - 1*8]=
                    *(uint32_t*)h->mvd_cache [list][scan8[0] + 1 - 1*8]=
                    *(uint32_t*)h->mvd_cache [list][scan8[0] + 2 - 1*8]=
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                    *(uint32_t*)h->mvd_cache [list][scan8[0] + 3 - 1*8]= 0;
                }
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                if(USES_LIST(left_type[0], list)){
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                    const int b_xy= h->mb2b_xy[left_xy[0]] + 3;
                    *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 0*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[0]];
                    *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[1]];
                }else{
                    *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 0*8]=
                    *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 1*8]= 0;
                }
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                if(USES_LIST(left_type[1], list)){
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                    const int b_xy= h->mb2b_xy[left_xy[1]] + 3;
                    *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 2*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[2]];
                    *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 3*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[3]];
                }else{
                    *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 2*8]=
                    *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 3*8]= 0;
                }
                *(uint32_t*)h->mvd_cache [list][scan8[5 ]+1]=
                *(uint32_t*)h->mvd_cache [list][scan8[7 ]+1]=
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                *(uint32_t*)h->mvd_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewhere else)
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                *(uint32_t*)h->mvd_cache [list][scan8[4 ]]=
                *(uint32_t*)h->mvd_cache [list][scan8[12]]= 0;
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                if(h->slice_type_nos == FF_B_TYPE){
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                    fill_rectangle(&h->direct_cache[scan8[0]], 4, 4, 8, 0, 1);

                    if(IS_DIRECT(top_type)){
                        *(uint32_t*)&h->direct_cache[scan8[0] - 1*8]= 0x01010101;
                    }else if(IS_8X8(top_type)){
                        int b8_xy = h->mb2b8_xy[top_xy] + h->b8_stride;
                        h->direct_cache[scan8[0] + 0 - 1*8]= h->direct_table[b8_xy];
                        h->direct_cache[scan8[0] + 2 - 1*8]= h->direct_table[b8_xy + 1];
                    }else{
                        *(uint32_t*)&h->direct_cache[scan8[0] - 1*8]= 0;
                    }
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                    if(IS_DIRECT(left_type[0]))
                        h->direct_cache[scan8[0] - 1 + 0*8]= 1;
                    else if(IS_8X8(left_type[0]))
                        h->direct_cache[scan8[0] - 1 + 0*8]= h->direct_table[h->mb2b8_xy[left_xy[0]] + 1 + h->b8_stride*(left_block[0]>>1)];
                    else
                        h->direct_cache[scan8[0] - 1 + 0*8]= 0;

                    if(IS_DIRECT(left_type[1]))
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                        h->direct_cache[scan8[0] - 1 + 2*8]= 1;
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                    else if(IS_8X8(left_type[1]))
                        h->direct_cache[scan8[0] - 1 + 2*8]= h->direct_table[h->mb2b8_xy[left_xy[1]] + 1 + h->b8_stride*(left_block[2]>>1)];
                    else
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                        h->direct_cache[scan8[0] - 1 + 2*8]= 0;
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                }
            }

            if(FRAME_MBAFF){
#define MAP_MVS\
                    MAP_F2F(scan8[0] - 1 - 1*8, topleft_type)\
                    MAP_F2F(scan8[0] + 0 - 1*8, top_type)\
                    MAP_F2F(scan8[0] + 1 - 1*8, top_type)\
                    MAP_F2F(scan8[0] + 2 - 1*8, top_type)\
                    MAP_F2F(scan8[0] + 3 - 1*8, top_type)\
                    MAP_F2F(scan8[0] + 4 - 1*8, topright_type)\
                    MAP_F2F(scan8[0] - 1 + 0*8, left_type[0])\
                    MAP_F2F(scan8[0] - 1 + 1*8, left_type[0])\
                    MAP_F2F(scan8[0] - 1 + 2*8, left_type[1])\
                    MAP_F2F(scan8[0] - 1 + 3*8, left_type[1])
                if(MB_FIELD){
#define MAP_F2F(idx, mb_type)\
                    if(!IS_INTERLACED(mb_type) && h->ref_cache[list][idx] >= 0){\
                        h->ref_cache[list][idx] <<= 1;\
                        h->mv_cache[list][idx][1] /= 2;\
                        h->mvd_cache[list][idx][1] /= 2;\
                    }
                    MAP_MVS
#undef MAP_F2F
                }else{
#define MAP_F2F(idx, mb_type)\
                    if(IS_INTERLACED(mb_type) && h->ref_cache[list][idx] >= 0){\
                        h->ref_cache[list][idx] >>= 1;\
                        h->mv_cache[list][idx][1] <<= 1;\
                        h->mvd_cache[list][idx][1] <<= 1;\
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                    }
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                    MAP_MVS
#undef MAP_F2F
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                }
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            }
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        }
    }
#endif
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    h->neighbor_transform_size= !!IS_8x8DCT(top_type) + !!IS_8x8DCT(left_type[0]);
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}

static inline void write_back_intra_pred_mode(H264Context *h){
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    const int mb_xy= h->mb_xy;
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    h->intra4x4_pred_mode[mb_xy][0]= h->intra4x4_pred_mode_cache[7+8*1];
    h->intra4x4_pred_mode[mb_xy][1]= h->intra4x4_pred_mode_cache[7+8*2];
    h->intra4x4_pred_mode[mb_xy][2]= h->intra4x4_pred_mode_cache[7+8*3];
    h->intra4x4_pred_mode[mb_xy][3]= h->intra4x4_pred_mode_cache[7+8*4];
    h->intra4x4_pred_mode[mb_xy][4]= h->intra4x4_pred_mode_cache[4+8*4];
    h->intra4x4_pred_mode[mb_xy][5]= h->intra4x4_pred_mode_cache[5+8*4];
    h->intra4x4_pred_mode[mb_xy][6]= h->intra4x4_pred_mode_cache[6+8*4];
}

/**
 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
 */
static inline int check_intra4x4_pred_mode(H264Context *h){
    MpegEncContext * const s = &h->s;
    static const int8_t top [12]= {-1, 0,LEFT_DC_PRED,-1,-1,-1,-1,-1, 0};
    static const int8_t left[12]= { 0,-1, TOP_DC_PRED, 0,-1,-1,-1, 0,-1,DC_128_PRED};
    int i;
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    if(!(h->top_samples_available&0x8000)){
        for(i=0; i<4; i++){
            int status= top[ h->intra4x4_pred_mode_cache[scan8[0] + i] ];
            if(status<0){
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                av_log(h->s.avctx, AV_LOG_ERROR, "top block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y);
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                return -1;
            } else if(status){
                h->intra4x4_pred_mode_cache[scan8[0] + i]= status;
            }
        }
    }
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    if((h->left_samples_available&0x8888)!=0x8888){
        static const int mask[4]={0x8000,0x2000,0x80,0x20};
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        for(i=0; i<4; i++){
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            if(!(h->left_samples_available&mask[i])){
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                int status= left[ h->intra4x4_pred_mode_cache[scan8[0] + 8*i] ];
                if(status<0){
                    av_log(h->s.avctx, AV_LOG_ERROR, "left block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y);
                    return -1;
                } else if(status){
                    h->intra4x4_pred_mode_cache[scan8[0] + 8*i]= status;
                }
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            }
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        }
    }

    return 0;
} //FIXME cleanup like next

/**
 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
 */
static inline int check_intra_pred_mode(H264Context *h, int mode){
    MpegEncContext * const s = &h->s;
    static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1};
    static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8};
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    if(mode > 6U) {
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        av_log(h->s.avctx, AV_LOG_ERROR, "out of range intra chroma pred mode at %d %d\n", s->mb_x, s->mb_y);
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        return -1;
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    }
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    if(!(h->top_samples_available&0x8000)){
        mode= top[ mode ];
        if(mode<0){
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            av_log(h->s.avctx, AV_LOG_ERROR, "top block unavailable for requested intra mode at %d %d\n", s->mb_x, s->mb_y);
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            return -1;
        }
    }
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    if((h->left_samples_available&0x8080) != 0x8080){
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        mode= left[ mode ];
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        if(h->left_samples_available&0x8080){ //mad cow disease mode, aka MBAFF + constrained_intra_pred
            mode= ALZHEIMER_DC_L0T_PRED8x8 + (!(h->left_samples_available&0x8000)) + 2*(mode == DC_128_PRED8x8);
        }
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        if(mode<0){
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            av_log(h->s.avctx, AV_LOG_ERROR, "left block unavailable for requested intra mode at %d %d\n", s->mb_x, s->mb_y);
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            return -1;
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        }
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    }

    return mode;
}

/**
 * gets the predicted intra4x4 prediction mode.
 */
static inline int pred_intra_mode(H264Context *h, int n){
    const int index8= scan8[n];
    const int left= h->intra4x4_pred_mode_cache[index8 - 1];
    const int top = h->intra4x4_pred_mode_cache[index8 - 8];
    const int min= FFMIN(left, top);

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    tprintf(h->s.avctx, "mode:%d %d min:%d\n", left ,top, min);
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    if(min<0) return DC_PRED;
    else      return min;
}

static inline void write_back_non_zero_count(H264Context *h){
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    const int mb_xy= h->mb_xy;
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    h->non_zero_count[mb_xy][0]= h->non_zero_count_cache[7+8*1];
    h->non_zero_count[mb_xy][1]= h->non_zero_count_cache[7+8*2];
    h->non_zero_count[mb_xy][2]= h->non_zero_count_cache[7+8*3];
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    h->non_zero_count[mb_xy][3]= h->non_zero_count_cache[7+8*4];
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    h->non_zero_count[mb_xy][4]= h->non_zero_count_cache[4+8*4];
    h->non_zero_count[mb_xy][5]= h->non_zero_count_cache[5+8*4];
    h->non_zero_count[mb_xy][6]= h->non_zero_count_cache[6+8*4];
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    h->non_zero_count[mb_xy][9]= h->non_zero_count_cache[1+8*2];
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    h->non_zero_count[mb_xy][8]= h->non_zero_count_cache[2+8*2];
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    h->non_zero_count[mb_xy][7]= h->non_zero_count_cache[2+8*1];
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    h->non_zero_count[mb_xy][12]=h->non_zero_count_cache[1+8*5];
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    h->non_zero_count[mb_xy][11]=h->non_zero_count_cache[2+8*5];
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    h->non_zero_count[mb_xy][10]=h->non_zero_count_cache[2+8*4];
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}

/**
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 * gets the predicted number of non-zero coefficients.
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 * @param n block index
 */
static inline int pred_non_zero_count(H264Context *h, int n){
    const int index8= scan8[n];
    const int left= h->non_zero_count_cache[index8 - 1];
    const int top = h->non_zero_count_cache[index8 - 8];
    int i= left + top;
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    if(i<64) i= (i+1)>>1;

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    tprintf(h->s.avctx, "pred_nnz L%X T%X n%d s%d P%X\n", left, top, n, scan8[n], i&31);
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    return i&31;
}

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static inline int fetch_diagonal_mv(H264Context *h, const int16_t **C, int i, int list, int part_width){
    const int topright_ref= h->ref_cache[list][ i - 8 + part_width ];
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    MpegEncContext *s = &h->s;
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    /* there is no consistent mapping of mvs to neighboring locations that will
     * make mbaff happy, so we can't move all this logic to fill_caches */
    if(FRAME_MBAFF){
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        const uint32_t *mb_types = s->current_picture_ptr->mb_type;
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        const int16_t *mv;
        *(uint32_t*)h->mv_cache[list][scan8[0]-2] = 0;
        *C = h->mv_cache[list][scan8[0]-2];

        if(!MB_FIELD
           && (s->mb_y&1) && i < scan8[0]+8 && topright_ref != PART_NOT_AVAILABLE){
            int topright_xy = s->mb_x + (s->mb_y-1)*s->mb_stride + (i == scan8[0]+3);
            if(IS_INTERLACED(mb_types[topright_xy])){
#define SET_DIAG_MV(MV_OP, REF_OP, X4, Y4)\
                const int x4 = X4, y4 = Y4;\
                const int mb_type = mb_types[(x4>>2)+(y4>>2)*s->mb_stride];\
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                if(!USES_LIST(mb_type,list))\
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                    return LIST_NOT_USED;\
                mv = s->current_picture_ptr->motion_val[list][x4 + y4*h->b_stride];\
                h->mv_cache[list][scan8[0]-2][0] = mv[0];\
                h->mv_cache[list][scan8[0]-2][1] = mv[1] MV_OP;\
                return s->current_picture_ptr->ref_index[list][(x4>>1) + (y4>>1)*h->b8_stride] REF_OP;

                SET_DIAG_MV(*2, >>1, s->mb_x*4+(i&7)-4+part_width, s->mb_y*4-1);
            }
        }
        if(topright_ref == PART_NOT_AVAILABLE
           && ((s->mb_y&1) || i >= scan8[0]+8) && (i&7)==4
           && h->ref_cache[list][scan8[0]-1] != PART_NOT_AVAILABLE){
            if(!MB_FIELD
               && IS_INTERLACED(mb_types[h->left_mb_xy[0]])){
                SET_DIAG_MV(*2, >>1, s->mb_x*4-1, (s->mb_y|1)*4+(s->mb_y&1)*2+(i>>4)-1);
            }
            if(MB_FIELD
               && !IS_INTERLACED(mb_types[h->left_mb_xy[0]])
               && i >= scan8[0]+8){
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                // left shift will turn LIST_NOT_USED into PART_NOT_AVAILABLE, but that's OK.
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                SET_DIAG_MV(/2, <<1, s->mb_x*4-1, (s->mb_y&~1)*4 - 1 + ((i-scan8[0])>>3)*2);
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            }
        }
#undef SET_DIAG_MV
    }

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    if(topright_ref != PART_NOT_AVAILABLE){
        *C= h->mv_cache[list][ i - 8 + part_width ];
        return topright_ref;
    }else{
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        tprintf(s->avctx, "topright MV not available\n");
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        *C= h->mv_cache[list][ i - 8 - 1 ];
        return h->ref_cache[list][ i - 8 - 1 ];
    }
}

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/**
 * gets the predicted MV.
 * @param n the block index
 * @param part_width the width of the partition (4, 8,16) -> (1, 2, 4)
 * @param mx the x component of the predicted motion vector
 * @param my the y component of the predicted motion vector
 */
static inline void pred_motion(H264Context * const h, int n, int part_width, int list, int ref, int * const mx, int * const my){
    const int index8= scan8[n];
    const int top_ref=      h->ref_cache[list][ index8 - 8 ];
    const int left_ref=     h->ref_cache[list][ index8 - 1 ];
    const int16_t * const A= h->mv_cache[list][ index8 - 1 ];
    const int16_t * const B= h->mv_cache[list][ index8 - 8 ];
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    const int16_t * C;
    int diagonal_ref, match_count;

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    assert(part_width==1 || part_width==2 || part_width==4);
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/* mv_cache
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  B . . A T T T T
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  U . . L . . , .
  U . . L . . . .
  U . . L . . , .
  . . . L . . . .
*/
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    diagonal_ref= fetch_diagonal_mv(h, &C, index8, list, part_width);
    match_count= (diagonal_ref==ref) + (top_ref==ref) + (left_ref==ref);
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    tprintf(h->s.avctx, "pred_motion match_count=%d\n", match_count);
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    if(match_count > 1){ //most common
        *mx= mid_pred(A[0], B[0], C[0]);
        *my= mid_pred(A[1], B[1], C[1]);
    }else if(match_count==1){
        if(left_ref==ref){
            *mx= A[0];
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            *my= A[1];
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        }else if(top_ref==ref){
            *mx= B[0];
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            *my= B[1];
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        }else{
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            *mx= C[0];
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            *my= C[1];
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        }
    }else{
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        if(top_ref == PART_NOT_AVAILABLE && diagonal_ref == PART_NOT_AVAILABLE && left_ref != PART_NOT_AVAILABLE){
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            *mx= A[0];
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            *my= A[1];
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        }else{
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            *mx= mid_pred(A[0], B[0], C[0]);
            *my= mid_pred(A[1], B[1], C[1]);
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        }
    }
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    tprintf(h->s.avctx, "pred_motion (%2d %2d %2d) (%2d %2d %2d) (%2d %2d %2d) -> (%2d %2d %2d) at %2d %2d %d list %d\n", top_ref, B[0], B[1],                    diagonal_ref, C[0], C[1], left_ref, A[0], A[1], ref, *mx, *my, h->s.mb_x, h->s.mb_y, n, list);
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}

/**
 * gets the directionally predicted 16x8 MV.
 * @param n the block index
 * @param mx the x component of the predicted motion vector
 * @param my the y component of the predicted motion vector
 */
static inline void pred_16x8_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
    if(n==0){
        const int top_ref=      h->ref_cache[list][ scan8[0] - 8 ];
        const int16_t * const B= h->mv_cache[list][ scan8[0] - 8 ];

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        tprintf(h->s.avctx, "pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d\n", top_ref, B[0], B[1], h->s.mb_x, h->s.mb_y, n, list);
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        if(top_ref == ref){
            *mx= B[0];
            *my= B[1];
            return;
        }
    }else{
        const int left_ref=     h->ref_cache[list][ scan8[8] - 1 ];
        const int16_t * const A= h->mv_cache[list][ scan8[8] - 1 ];
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        tprintf(h->s.avctx, "pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d\n", left_ref, A[0], A[1], h->s.mb_x, h->s.mb_y, n, list);
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        if(left_ref == ref){
            *mx= A[0];
            *my= A[1];
            return;
        }
    }

    //RARE
    pred_motion(h, n, 4, list, ref, mx, my);
}

/**
 * gets the directionally predicted 8x16 MV.
 * @param n the block index
 * @param mx the x component of the predicted motion vector
 * @param my the y component of the predicted motion vector
 */
static inline void pred_8x16_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
    if(n==0){
        const int left_ref=      h->ref_cache[list][ scan8[0] - 1 ];
        const int16_t * const A=  h->mv_cache[list][ scan8[0] - 1 ];
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        tprintf(h->s.avctx, "pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d\n", left_ref, A[0], A[1], h->s.mb_x, h->s.mb_y, n, list);
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        if(left_ref == ref){
            *mx= A[0];
            *my= A[1];
            return;
        }
    }else{
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        const int16_t * C;
        int diagonal_ref;

        diagonal_ref= fetch_diagonal_mv(h, &C, scan8[4], list, 2);
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        tprintf(h->s.avctx, "pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d\n", diagonal_ref, C[0], C[1], h->s.mb_x, h->s.mb_y, n, list);
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        if(diagonal_ref == ref){
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            *mx= C[0];
            *my= C[1];
            return;
        }
    }

    //RARE
    pred_motion(h, n, 2, list, ref, mx, my);
}

static inline void pred_pskip_motion(H264Context * const h, int * const mx, int * const my){
    const int top_ref = h->ref_cache[0][ scan8[0] - 8 ];
    const int left_ref= h->ref_cache[0][ scan8[0] - 1 ];

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    tprintf(h->s.avctx, "pred_pskip: (%d) (%d) at %2d %2d\n", top_ref, left_ref, h->s.mb_x, h->s.mb_y);
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    if(top_ref == PART_NOT_AVAILABLE || left_ref == PART_NOT_AVAILABLE
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       || !( top_ref | *(uint32_t*)h->mv_cache[0][ scan8[0] - 8 ])
       || !(left_ref | *(uint32_t*)h->mv_cache[0][ scan8[0] - 1 ])){
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        *mx = *my = 0;
        return;
    }
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    pred_motion(h, 0, 4, 0, 0, mx, my);

    return;
}

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static int get_scale_factor(H264Context * const h, int poc, int poc1, int i){
    int poc0 = h->ref_list[0][i].poc;
    int td = av_clip(poc1 - poc0, -128, 127);
    if(td == 0 || h->ref_list[0][i].long_ref){
        return 256;
    }else{
        int tb = av_clip(poc - poc0, -128, 127);
        int tx = (16384 + (FFABS(td) >> 1)) / td;
        return av_clip((tb*tx + 32) >> 6, -1024, 1023);
    }
}

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static inline void direct_dist_scale_factor(H264Context * const h){
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    MpegEncContext * const s = &h->s;
    const int poc = h->s.current_picture_ptr->field_poc[ s->picture_structure == PICT_BOTTOM_FIELD ];
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    const int poc1 = h->ref_list[1][0].poc;
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    int i, field;
    for(field=0; field<2; field++){
        const int poc  = h->s.current_picture_ptr->field_poc[field];
        const int poc1 = h->ref_list[1][0].field_poc[field];
        for(i=0; i < 2*h->ref_count[0]; i++)
            h->dist_scale_factor_field[field][i^field] = get_scale_factor(h, poc, poc1, i+16);
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    }
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    for(i=0; i<h->ref_count[0]; i++){
        h->dist_scale_factor[i] = get_scale_factor(h, poc, poc1, i);
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    }
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}
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static void fill_colmap(H264Context *h, int map[2][16+32], int list, int field, int colfield, int mbafi){
    MpegEncContext * const s = &h->s;
    Picture * const ref1 = &h->ref_list[1][0];
    int j, old_ref, rfield;
    int start= mbafi ? 16                      : 0;
    int end  = mbafi ? 16+2*h->ref_count[list] : h->ref_count[list];
    int interl= mbafi || s->picture_structure != PICT_FRAME;

    /* bogus; fills in for missing frames */
    memset(map[list], 0, sizeof(map[list]));

    for(rfield=0; rfield<2; rfield++){
        for(old_ref=0; old_ref<ref1->ref_count[colfield][list]; old_ref++){
            int poc = ref1->ref_poc[colfield][list][old_ref];

            if     (!interl)
                poc |= 3;
            else if( interl && (poc&3) == 3) //FIXME store all MBAFF references so this isnt needed
                poc= (poc&~3) + rfield + 1;

            for(j=start; j<end; j++){
                if(4*h->ref_list[list][j].frame_num + (h->ref_list[list][j].reference&3) == poc){
                    int cur_ref= mbafi ? (j-16)^field : j;
                    map[list][2*old_ref + (rfield^field) + 16] = cur_ref;
                    if(rfield == field)
                        map[list][old_ref] = cur_ref;
                    break;
                }
            }
        }
    }
}

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static inline void direct_ref_list_init(H264Context * const h){
    MpegEncContext * const s = &h->s;
    Picture * const ref1 = &h->ref_list[1][0];
    Picture * const cur = s->current_picture_ptr;
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    int list, j, field;
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    int sidx= (s->picture_structure&1)^1;
    int ref1sidx= (ref1->reference&1)^1;
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    for(list=0; list<2; list++){
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        cur->ref_count[sidx][list] = h->ref_count[list];
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        for(j=0; j<h->ref_count[list]; j++)
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            cur->ref_poc[sidx][list][j] = 4*h->ref_list[list][j].frame_num + (h->ref_list[list][j].reference&3);
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    }
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    if(s->picture_structure == PICT_FRAME){
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        memcpy(cur->ref_count[1], cur->ref_count[0], sizeof(cur->ref_count[0]));
        memcpy(cur->ref_poc  [1], cur->ref_poc  [0], sizeof(cur->ref_poc  [0]));
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    }
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    cur->mbaff= FRAME_MBAFF;
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    if(cur->pict_type != FF_B_TYPE || h->direct_spatial_mv_pred)
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        return;
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    for(list=0; list<2; list++){
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        fill_colmap(h, h->map_col_to_list0, list, sidx, ref1sidx, 0);
        for(field=0; field<2; field++)
            fill_colmap(h, h->map_col_to_list0_field[field], list, field, field, 1);
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    }
}
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static inline void pred_direct_motion(H264Context * const h, int *mb_type){
    MpegEncContext * const s = &h->s;
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    int b8_stride = h->b8_stride;
    int b4_stride = h->b_stride;
    int mb_xy = h->mb_xy;
    int mb_type_col[2];
    const int16_t (*l1mv0)[2], (*l1mv1)[2];
    const int8_t *l1ref0, *l1ref1;
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    const int is_b8x8 = IS_8X8(*mb_type);
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    unsigned int sub_mb_type;
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    int i8, i4;

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    assert(h->ref_list[1][0].reference&3);

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#define MB_TYPE_16x16_OR_INTRA (MB_TYPE_16x16|MB_TYPE_INTRA4x4|MB_TYPE_INTRA16x16|MB_TYPE_INTRA_PCM)
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    if(IS_INTERLACED(h->ref_list[1][0].mb_type[mb_xy])){ // AFL/AFR/FR/FL -> AFL/FL
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        if(!IS_INTERLACED(*mb_type)){                    //     AFR/FR    -> AFL/FL
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            int cur_poc = s->current_picture_ptr->poc;
            int *col_poc = h->ref_list[1]->field_poc;
            int col_parity = FFABS(col_poc[0] - cur_poc) >= FFABS(col_poc[1] - cur_poc);
            mb_xy= s->mb_x + ((s->mb_y&~1) + col_parity)*s->mb_stride;
            b8_stride = 0;
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        }else if(!(s->picture_structure & h->ref_list[1][0].reference) && !h->ref_list[1][0].mbaff){// FL -> FL & differ parity
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            int fieldoff= 2*(h->ref_list[1][0].reference)-3;
            mb_xy += s->mb_stride*fieldoff;
        }
        goto single_col;
    }else{                                               // AFL/AFR/FR/FL -> AFR/FR
        if(IS_INTERLACED(*mb_type)){                     // AFL       /FL -> AFR/FR
            mb_xy= s->mb_x + (s->mb_y&~1)*s->mb_stride;
            mb_type_col[0] = h->ref_list[1][0].mb_type[mb_xy];
            mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy + s->mb_stride];
            b8_stride *= 3;
            b4_stride *= 6;
            //FIXME IS_8X8(mb_type_col[0]) && !h->sps.direct_8x8_inference_flag
            if(    (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)
                && (mb_type_col[1] & MB_TYPE_16x16_OR_INTRA)
                && !is_b8x8){
                sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
                *mb_type   |= MB_TYPE_16x8 |MB_TYPE_L0L1|MB_TYPE_DIRECT2; /* B_16x8 */
            }else{
                sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
                *mb_type   |= MB_TYPE_8x8|MB_TYPE_L0L1;
            }
        }else{                                           //     AFR/FR    -> AFR/FR
single_col:
            mb_type_col[0] =
            mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy];
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            if(IS_8X8(mb_type_col[0]) && !h->sps.direct_8x8_inference_flag){
                /* FIXME save sub mb types from previous frames (or derive from MVs)
                * so we know exactly what block size to use */
                sub_mb_type = MB_TYPE_8x8|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_4x4 */
                *mb_type   |= MB_TYPE_8x8|MB_TYPE_L0L1;
            }else if(!is_b8x8 && (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)){
                sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
                *mb_type   |= MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_16x16 */
            }else{
                sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
                *mb_type   |= MB_TYPE_8x8|MB_TYPE_L0L1;
            }
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        }
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    }

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    l1mv0  = &h->ref_list[1][0].motion_val[0][h->mb2b_xy [mb_xy]];
    l1mv1  = &h->ref_list[1][0].motion_val[1][h->mb2b_xy [mb_xy]];
    l1ref0 = &h->ref_list[1][0].ref_index [0][h->mb2b8_xy[mb_xy]];
    l1ref1 = &h->ref_list[1][0].ref_index [1][h->mb2b8_xy[mb_xy]];
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    if(!b8_stride){
        if(s->mb_y&1){
            l1ref0 += h->b8_stride;
            l1ref1 += h->b8_stride;
            l1mv0  +=  2*b4_stride;
            l1mv1  +=  2*b4_stride;
        }
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    }
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    if(h->direct_spatial_mv_pred){
        int ref[2];
        int mv[2][2];
        int list;

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        /* FIXME interlacing + spatial direct uses wrong colocated block positions */

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        /* ref = min(neighbors) */
        for(list=0; list<2; list++){
            int refa = h->ref_cache[list][scan8[0] - 1];
            int refb = h->ref_cache[list][scan8[0] - 8];
            int refc = h->ref_cache[list][scan8[0] - 8 + 4];
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            if(refc == PART_NOT_AVAILABLE)
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                refc = h->ref_cache[list][scan8[0] - 8 - 1];
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            ref[list] = FFMIN3((unsigned)refa, (unsigned)refb, (unsigned)refc);
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            if(ref[list] < 0)
                ref[list] = -1;
        }

        if(ref[0] < 0 && ref[1] < 0){
            ref[0] = ref[1] = 0;
            mv[0][0] = mv[0][1] =
            mv[1][0] = mv[1][1] = 0;
        }else{
            for(list=0; list<2; list++){
                if(ref[list] >= 0)
                    pred_motion(h, 0, 4, list, ref[list], &mv[list][0], &mv[list][1]);
                else
                    mv[list][0] = mv[list][1] = 0;
            }
        }

        if(ref[1] < 0){
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            if(!is_b8x8)
                *mb_type &= ~MB_TYPE_L1;
            sub_mb_type &= ~MB_TYPE_L1;
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        }else if(ref[0] < 0){
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            if(!is_b8x8)
                *mb_type &= ~MB_TYPE_L0;
            sub_mb_type &= ~MB_TYPE_L0;
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        }

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        if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])){
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            for(i8=0; i8<4; i8++){
                int x8 = i8&1;
                int y8 = i8>>1;
                int xy8 = x8+y8*b8_stride;
                int xy4 = 3*x8+y8*b4_stride;
                int a=0, b=0;

                if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
                    continue;
                h->sub_mb_type[i8] = sub_mb_type;

                fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1);
                fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1);
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                if(!IS_INTRA(mb_type_col[y8])
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                   && (   (l1ref0[xy8] == 0 && FFABS(l1mv0[xy4][0]) <= 1 && FFABS(l1mv0[xy4][1]) <= 1)
                       || (l1ref0[xy8]  < 0 && l1ref1[xy8] == 0 && FFABS(l1mv1[xy4][0]) <= 1 && FFABS(l1mv1[xy4][1]) <= 1))){
                    if(ref[0] > 0)
                        a= pack16to32(mv[0][0],mv[0][1]);
                    if(ref[1] > 0)
                        b= pack16to32(mv[1][0],mv[1][1]);
                }else{
                    a= pack16to32(mv[0][0],mv[0][1]);
                    b= pack16to32(mv[1][0],mv[1][1]);
                }
                fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, a, 4);
                fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, b, 4);
            }
        }else if(IS_16X16(*mb_type)){
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            int a=0, b=0;

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            fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1);
            fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1);
1136
            if(!IS_INTRA(mb_type_col[0])
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               && (   (l1ref0[0] == 0 && FFABS(l1mv0[0][0]) <= 1 && FFABS(l1mv0[0][1]) <= 1)
                   || (l1ref0[0]  < 0 && l1ref1[0] == 0 && FFABS(l1mv1[0][0]) <= 1 && FFABS(l1mv1[0][1]) <= 1
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                       && (h->x264_build>33 || !h->x264_build)))){
1140
                if(ref[0] > 0)
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1141
                    a= pack16to32(mv[0][0],mv[0][1]);
1142
                if(ref[1] > 0)
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                    b= pack16to32(mv[1][0],mv[1][1]);
1144
            }else{
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                a= pack16to32(mv[0][0],mv[0][1]);
                b= pack16to32(mv[1][0],mv[1][1]);
1147
            }
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            fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, a, 4);
            fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, b, 4);
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        }else{
            for(i8=0; i8<4; i8++){
                const int x8 = i8&1;
                const int y8 = i8>>1;
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                if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
                    continue;
                h->sub_mb_type[i8] = sub_mb_type;
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                fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mv[0][0],mv[0][1]), 4);
                fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mv[1][0],mv[1][1]), 4);
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                fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1);
                fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1);
1163

1164
                /* col_zero_flag */
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                if(!IS_INTRA(mb_type_col[0]) && (   l1ref0[x8 + y8*b8_stride] == 0
                                              || (l1ref0[x8 + y8*b8_stride] < 0 && l1ref1[x8 + y8*b8_stride] == 0
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                                                  && (h->x264_build>33 || !h->x264_build)))){
1168
                    const int16_t (*l1mv)[2]= l1ref0[x8 + y8*b8_stride] == 0 ? l1mv0 : l1mv1;
1169
                    if(IS_SUB_8X8(sub_mb_type)){
1170
                        const int16_t *mv_col = l1mv[x8*3 + y8*3*b4_stride];
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                        if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){
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                            if(ref[0] == 0)
                                fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
                            if(ref[1] == 0)
                                fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
                        }
                    }else
1178
                    for(i4=0; i4<4; i4++){
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                        const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*b4_stride];
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                        if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){
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                            if(ref[0] == 0)
                                *(uint32_t*)h->mv_cache[0][scan8[i8*4+i4]] = 0;
                            if(ref[1] == 0)
                                *(uint32_t*)h->mv_cache[1][scan8[i8*4+i4]] = 0;
                        }
                    }
                }
            }
        }
    }else{ /* direct temporal mv pred */
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        const int *map_col_to_list0[2] = {h->map_col_to_list0[0], h->map_col_to_list0[1]};
        const int *dist_scale_factor = h->dist_scale_factor;
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        int ref_offset= 0;
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        if(FRAME_MBAFF && IS_INTERLACED(*mb_type)){
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            map_col_to_list0[0] = h->map_col_to_list0_field[s->mb_y&1][0];
            map_col_to_list0[1] = h->map_col_to_list0_field[s->mb_y&1][1];
            dist_scale_factor   =h->dist_scale_factor_field[s->mb_y&1];
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1199
        }
1200
        if(h->ref_list[1][0].mbaff && IS_INTERLACED(mb_type_col[0]))
1201
            ref_offset += 16;
1202

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        if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])){
            /* FIXME assumes direct_8x8_inference == 1 */
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            int y_shift  = 2*!IS_INTERLACED(*mb_type);
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            for(i8=0; i8<4; i8++){
                const int x8 = i8&1;
                const int y8 = i8>>1;
                int ref0, scale;
                const int16_t (*l1mv)[2]= l1mv0;
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                if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
                    continue;
                h->sub_mb_type[i8] = sub_mb_type;

                fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1);
                if(IS_INTRA(mb_type_col[y8])){
                    fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, 0, 1);
                    fill_rectangle(&h-> mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
                    fill_rectangle(&h-> mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
                    continue;
                }

                ref0 = l1ref0[x8 + y8*b8_stride];
                if(ref0 >= 0)
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                    ref0 = map_col_to_list0[0][ref0 + ref_offset];
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                else{
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                    ref0 = map_col_to_list0[1][l1ref1[x8 + y8*b8_stride] + ref_offset];
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                    l1mv= l1mv1;
                }
                scale = dist_scale_factor[ref0];
                fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref0, 1);

                {
                    const int16_t *mv_col = l1mv[x8*3 + y8*b4_stride];
                    int my_col = (mv_col[1]<<y_shift)/2;
                    int mx = (scale * mv_col[0] + 128) >> 8;
                    int my = (scale * my_col + 128) >> 8;
                    fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mx,my), 4);
                    fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mx-mv_col[0],my-my_col), 4);
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                }
            }
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            return;
        }
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        /* one-to-one mv scaling */

1249
        if(IS_16X16(*mb_type)){
1250 1251
            int ref, mv0, mv1;

1252
            fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, 0, 1);
1253
            if(IS_INTRA(mb_type_col[0])){
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                ref=mv0=mv1=0;
1255
            }else{
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                const int ref0 = l1ref0[0] >= 0 ? map_col_to_list0[0][l1ref0[0] + ref_offset]
                                                : map_col_to_list0[1][l1ref1[0] + ref_offset];
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                const int scale = dist_scale_factor[ref0];
1259
                const int16_t *mv_col = l1ref0[0] >= 0 ? l1mv0[0] : l1mv1[0];
1260
                int mv_l0[2];
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                mv_l0[0] = (scale * mv_col[0] + 128) >> 8;
                mv_l0[1] = (scale * mv_col[1] + 128) >> 8;
1263 1264 1265
                ref= ref0;
                mv0= pack16to32(mv_l0[0],mv_l0[1]);
                mv1= pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]);
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            }
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            fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, ref, 1);
            fill_rectangle(&h-> mv_cache[0][scan8[0]], 4, 4, 8, mv0, 4);
            fill_rectangle(&h-> mv_cache[1][scan8[0]], 4, 4, 8, mv1, 4);
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        }else{
            for(i8=0; i8<4; i8++){
                const int x8 = i8&1;
                const int y8 = i8>>1;
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                int ref0, scale;
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                const int16_t (*l1mv)[2]= l1mv0;
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                if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
                    continue;
                h->sub_mb_type[i8] = sub_mb_type;
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                fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1);
1281
                if(IS_INTRA(mb_type_col[0])){
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                    fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, 0, 1);
                    fill_rectangle(&h-> mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
                    fill_rectangle(&h-> mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
                    continue;
                }
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1288
                ref0 = l1ref0[x8 + y8*b8_stride] + ref_offset;
1289
                if(ref0 >= 0)
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                    ref0 = map_col_to_list0[0][ref0];
1291
                else{
1292
                    ref0 = map_col_to_list0[1][l1ref1[x8 + y8*b8_stride] + ref_offset];
1293 1294
                    l1mv= l1mv1;
                }
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                scale = dist_scale_factor[ref0];
1296

1297
                fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref0, 1);
1298
                if(IS_SUB_8X8(sub_mb_type)){
1299
                    const int16_t *mv_col = l1mv[x8*3 + y8*3*b4_stride];
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                    int mx = (scale * mv_col[0] + 128) >> 8;
                    int my = (scale * mv_col[1] + 128) >> 8;
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                    fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mx,my), 4);
                    fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mx-mv_col[0],my-mv_col[1]), 4);
                }else
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                for(i4=0; i4<4; i4++){
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                    const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*b4_stride];
1307
                    int16_t *mv_l0 = h->mv_cache[0][scan8[i8*4+i4]];
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                    mv_l0[0] = (scale * mv_col[0] + 128) >> 8;
                    mv_l0[1] = (scale * mv_col[1] + 128) >> 8;
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                    *(uint32_t*)h->mv_cache[1][scan8[i8*4+i4]] =
                        pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]);
                }
            }
        }
    }
}

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static inline void write_back_motion(H264Context *h, int mb_type){
    MpegEncContext * const s = &h->s;
    const int b_xy = 4*s->mb_x + 4*s->mb_y*h->b_stride;
    const int b8_xy= 2*s->mb_x + 2*s->mb_y*h->b8_stride;
    int list;

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    if(!USES_LIST(mb_type, 0))
        fill_rectangle(&s->current_picture.ref_index[0][b8_xy], 2, 2, h->b8_stride, (uint8_t)LIST_NOT_USED, 1);

1327
    for(list=0; list<h->list_count; list++){
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        int y;
1329
        if(!USES_LIST(mb_type, list))
1330
            continue;
1331

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        for(y=0; y<4; y++){
            *(uint64_t*)s->current_picture.motion_val[list][b_xy + 0 + y*h->b_stride]= *(uint64_t*)h->mv_cache[list][scan8[0]+0 + 8*y];
            *(uint64_t*)s->current_picture.motion_val[list][b_xy + 2 + y*h->b_stride]= *(uint64_t*)h->mv_cache[list][scan8[0]+2 + 8*y];
        }
1336
        if( h->pps.cabac ) {
1337 1338 1339
            if(IS_SKIP(mb_type))
                fill_rectangle(h->mvd_table[list][b_xy], 4, 4, h->b_stride, 0, 4);
            else
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            for(y=0; y<4; y++){
                *(uint64_t*)h->mvd_table[list][b_xy + 0 + y*h->b_stride]= *(uint64_t*)h->mvd_cache[list][scan8[0]+0 + 8*y];
                *(uint64_t*)h->mvd_table[list][b_xy + 2 + y*h->b_stride]= *(uint64_t*)h->mvd_cache[list][scan8[0]+2 + 8*y];
            }
        }
1345 1346

        {
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            int8_t *ref_index = &s->current_picture.ref_index[list][b8_xy];
1348 1349 1350 1351
            ref_index[0+0*h->b8_stride]= h->ref_cache[list][scan8[0]];
            ref_index[1+0*h->b8_stride]= h->ref_cache[list][scan8[4]];
            ref_index[0+1*h->b8_stride]= h->ref_cache[list][scan8[8]];
            ref_index[1+1*h->b8_stride]= h->ref_cache[list][scan8[12]];
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        }
    }
1354

1355
    if(h->slice_type_nos == FF_B_TYPE && h->pps.cabac){
1356
        if(IS_8X8(mb_type)){
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            uint8_t *direct_table = &h->direct_table[b8_xy];
            direct_table[1+0*h->b8_stride] = IS_DIRECT(h->sub_mb_type[1]) ? 1 : 0;
            direct_table[0+1*h->b8_stride] = IS_DIRECT(h->sub_mb_type[2]) ? 1 : 0;
            direct_table[1+1*h->b8_stride] = IS_DIRECT(h->sub_mb_type[3]) ? 1 : 0;
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        }
    }
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}

1365
const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length){
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    int i, si, di;
    uint8_t *dst;
1368
    int bufidx;
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1370
//    src[0]&0x80;                //forbidden bit
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    h->nal_ref_idc= src[0]>>5;
    h->nal_unit_type= src[0]&0x1F;

    src++; length--;
1375
#if 0
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    for(i=0; i<length; i++)
        printf("%2X ", src[i]);
#endif
1379

1380 1381
#if HAVE_FAST_UNALIGNED
# if HAVE_FAST_64BIT
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#   define RS 7
    for(i=0; i+1<length; i+=9){
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        if(!((~*(const uint64_t*)(src+i) & (*(const uint64_t*)(src+i) - 0x0100010001000101ULL)) & 0x8000800080008080ULL))
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# else
#   define RS 3
    for(i=0; i+1<length; i+=5){
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        if(!((~*(const uint32_t*)(src+i) & (*(const uint32_t*)(src+i) - 0x01000101U)) & 0x80008080U))
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# endif
            continue;
        if(i>0 && !src[i]) i--;
        while(src[i]) i++;
#else
#   define RS 0
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    for(i=0; i+1<length; i+=2){
        if(src[i]) continue;
        if(i>0 && src[i-1]==0) i--;
1398
#endif
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        if(i+2<length && src[i+1]==0 && src[i+2]<=3){
            if(src[i+2]!=3){
                /* startcode, so we must be past the end */
                length=i;
            }
            break;
        }
1406
        i-= RS;
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    }

    if(i>=length-1){ //no escaped 0
        *dst_length= length;
        *consumed= length+1; //+1 for the header
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        return src;
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    }

1415
    bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0; // use second escape buffer for inter data
1416
    av_fast_malloc(&h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length+FF_INPUT_BUFFER_PADDING_SIZE);
1417
    dst= h->rbsp_buffer[bufidx];
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    if (dst == NULL){
        return NULL;
    }

1423
//printf("decoding esc\n");
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    memcpy(dst, src, i);
    si=di=i;
    while(si+2<length){
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        //remove escapes (very rare 1:2^22)
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        if(src[si+2]>3){
            dst[di++]= src[si++];
            dst[di++]= src[si++];
        }else if(src[si]==0 && src[si+1]==0){
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            if(src[si+2]==3){ //escape
                dst[di++]= 0;
                dst[di++]= 0;
                si+=3;
1436
                continue;
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            }else //next start code
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                goto nsc;
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        }

        dst[di++]= src[si++];
    }
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    while(si<length)
        dst[di++]= src[si++];
nsc:
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    memset(dst+di, 0, FF_INPUT_BUFFER_PADDING_SIZE);

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    *dst_length= di;
    *consumed= si + 1;//+1 for the header
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//FIXME store exact number of bits in the getbitcontext (it is needed for decoding)
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    return dst;
}

1455
int ff_h264_decode_rbsp_trailing(H264Context *h, const uint8_t *src){
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    int v= *src;
    int r;

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    tprintf(h->s.avctx, "rbsp trailing %X\n", v);
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    for(r=1; r<9; r++){
        if(v&1) return r;
        v>>=1;
    }
    return 0;
}

/**
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 * IDCT transforms the 16 dc values and dequantizes them.
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 * @param qp quantization parameter
 */
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static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
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#define stride 16
    int i;
    int temp[16]; //FIXME check if this is a good idea
    static const int x_offset[4]={0, 1*stride, 4* stride,  5*stride};
    static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};

//memset(block, 64, 2*256);
//return;
    for(i=0; i<4; i++){
        const int offset= y_offset[i];
        const int z0= block[offset+stride*0] + block[offset+stride*4];
        const int z1= block[offset+stride*0] - block[offset+stride*4];
        const int z2= block[offset+stride*1] - block[offset+stride*5];
        const int z3= block[offset+stride*1] + block[offset+stride*5];

        temp[4*i+0]= z0+z3;
        temp[4*i+1]= z1+z2;
        temp[4*i+2]= z1-z2;
        temp[4*i+3]= z0-z3;
    }

    for(i=0; i<4; i++){
        const int offset= x_offset[i];
        const int z0= temp[4*0+i] + temp[4*2+i];
        const int z1= temp[4*0+i] - temp[4*2+i];
        const int z2= temp[4*1+i] - temp[4*3+i];
        const int z3= temp[4*1+i] + temp[4*3+i];

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        block[stride*0 +offset]= ((((z0 + z3)*qmul + 128 ) >> 8)); //FIXME think about merging this into decode_residual
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        block[stride*2 +offset]= ((((z1 + z2)*qmul + 128 ) >> 8));
        block[stride*8 +offset]= ((((z1 - z2)*qmul + 128 ) >> 8));
        block[stride*10+offset]= ((((z0 - z3)*qmul + 128 ) >> 8));
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    }
}

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#if 0
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/**
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 * DCT transforms the 16 dc values.
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 * @param qp quantization parameter ??? FIXME
 */
static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
//    const int qmul= dequant_coeff[qp][0];
    int i;
    int temp[16]; //FIXME check if this is a good idea
    static const int x_offset[4]={0, 1*stride, 4* stride,  5*stride};
    static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};

    for(i=0; i<4; i++){
        const int offset= y_offset[i];
        const int z0= block[offset+stride*0] + block[offset+stride*4];
        const int z1= block[offset+stride*0] - block[offset+stride*4];
        const int z2= block[offset+stride*1] - block[offset+stride*5];
        const int z3= block[offset+stride*1] + block[offset+stride*5];

        temp[4*i+0]= z0+z3;
        temp[4*i+1]= z1+z2;
        temp[4*i+2]= z1-z2;
        temp[4*i+3]= z0-z3;
    }

    for(i=0; i<4; i++){
        const int offset= x_offset[i];
        const int z0= temp[4*0+i] + temp[4*2+i];
        const int z1= temp[4*0+i] - temp[4*2+i];
        const int z2= temp[4*1+i] - temp[4*3+i];
        const int z3= temp[4*1+i] + temp[4*3+i];

        block[stride*0 +offset]= (z0 + z3)>>1;
        block[stride*2 +offset]= (z1 + z2)>>1;
        block[stride*8 +offset]= (z1 - z2)>>1;
        block[stride*10+offset]= (z0 - z3)>>1;
    }
}
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#endif

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#undef xStride
#undef stride

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static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
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    const int stride= 16*2;
    const int xStride= 16;
    int a,b,c,d,e;

    a= block[stride*0 + xStride*0];
    b= block[stride*0 + xStride*1];
    c= block[stride*1 + xStride*0];
    d= block[stride*1 + xStride*1];

    e= a-b;
    a= a+b;
    b= c-d;
    c= c+d;

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    block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7;
    block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7;
    block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7;
    block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7;
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}

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#if 0
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static void chroma_dc_dct_c(DCTELEM *block){
    const int stride= 16*2;
    const int xStride= 16;
    int a,b,c,d,e;

    a= block[stride*0 + xStride*0];
    b= block[stride*0 + xStride*1];
    c= block[stride*1 + xStride*0];
    d= block[stride*1 + xStride*1];

    e= a-b;
    a= a+b;
    b= c-d;
    c= c+d;

    block[stride*0 + xStride*0]= (a+c);
    block[stride*0 + xStride*1]= (e+b);
    block[stride*1 + xStride*0]= (a-c);
    block[stride*1 + xStride*1]= (e-b);
}
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#endif
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/**
 * gets the chroma qp.
 */
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static inline int get_chroma_qp(H264Context *h, int t, int qscale){
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    return h->pps.chroma_qp_table[t][qscale];
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}

static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
                           int src_x_offset, int src_y_offset,
                           qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){
    MpegEncContext * const s = &h->s;
    const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
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    int my=       h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
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    const int luma_xy= (mx&3) + ((my&3)<<2);
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    uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*h->mb_linesize;
    uint8_t * src_cb, * src_cr;
    int extra_width= h->emu_edge_width;
    int extra_height= h->emu_edge_height;
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    int emu=0;
    const int full_mx= mx>>2;
    const int full_my= my>>2;
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    const int pic_width  = 16*s->mb_width;
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    const int pic_height = 16*s->mb_height >> MB_FIELD;
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    if(mx&7) extra_width -= 3;
    if(my&7) extra_height -= 3;
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    if(   full_mx < 0-extra_width
       || full_my < 0-extra_height
       || full_mx + 16/*FIXME*/ > pic_width + extra_width
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       || full_my + 16/*FIXME*/ > pic_height + extra_height){
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        ff_emulated_edge_mc(s->edge_emu_buffer, src_y - 2 - 2*h->mb_linesize, h->mb_linesize, 16+5, 16+5/*FIXME*/, full_mx-2, full_my-2, pic_width, pic_height);
            src_y= s->edge_emu_buffer + 2 + 2*h->mb_linesize;
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        emu=1;
    }
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    qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); //FIXME try variable height perhaps?
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    if(!square){
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        qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
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    }
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    if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
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    if(MB_FIELD){
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        // chroma offset when predicting from a field of opposite parity
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        my += 2 * ((s->mb_y & 1) - (pic->reference - 1));
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        emu |= (my>>3) < 0 || (my>>3) + 8 >= (pic_height>>1);
    }
    src_cb= pic->data[1] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
    src_cr= pic->data[2] + (mx>>3) + (my>>3)*h->mb_uvlinesize;

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    if(emu){
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        ff_emulated_edge_mc(s->edge_emu_buffer, src_cb, h->mb_uvlinesize, 9, 9/*FIXME*/, (mx>>3), (my>>3), pic_width>>1, pic_height>>1);
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            src_cb= s->edge_emu_buffer;
    }
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    chroma_op(dest_cb, src_cb, h->mb_uvlinesize, chroma_height, mx&7, my&7);
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    if(emu){
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        ff_emulated_edge_mc(s->edge_emu_buffer, src_cr, h->mb_uvlinesize, 9, 9/*FIXME*/, (mx>>3), (my>>3), pic_width>>1, pic_height>>1);
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            src_cr= s->edge_emu_buffer;
    }
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    chroma_op(dest_cr, src_cr, h->mb_uvlinesize, chroma_height, mx&7, my&7);
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}

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static inline void mc_part_std(H264Context *h, int n, int square, int chroma_height, int delta,
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                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
                           int x_offset, int y_offset,
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
                           qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
                           int list0, int list1){
    MpegEncContext * const s = &h->s;
    qpel_mc_func *qpix_op=  qpix_put;
    h264_chroma_mc_func chroma_op= chroma_put;
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    dest_y  += 2*x_offset + 2*y_offset*h->  mb_linesize;
    dest_cb +=   x_offset +   y_offset*h->mb_uvlinesize;
    dest_cr +=   x_offset +   y_offset*h->mb_uvlinesize;
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    x_offset += 8*s->mb_x;
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    y_offset += 8*(s->mb_y >> MB_FIELD);
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    if(list0){
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        Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
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        mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
                           dest_y, dest_cb, dest_cr, x_offset, y_offset,
                           qpix_op, chroma_op);

        qpix_op=  qpix_avg;
        chroma_op= chroma_avg;
    }

    if(list1){
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        Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
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        mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
                           dest_y, dest_cb, dest_cr, x_offset, y_offset,
                           qpix_op, chroma_op);
    }
}

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static inline void mc_part_weighted(H264Context *h, int n, int square, int chroma_height, int delta,
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
                           int x_offset, int y_offset,
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
                           h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op,
                           h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg,
                           int list0, int list1){
    MpegEncContext * const s = &h->s;

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    dest_y  += 2*x_offset + 2*y_offset*h->  mb_linesize;
    dest_cb +=   x_offset +   y_offset*h->mb_uvlinesize;
    dest_cr +=   x_offset +   y_offset*h->mb_uvlinesize;
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    x_offset += 8*s->mb_x;
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    y_offset += 8*(s->mb_y >> MB_FIELD);
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    if(list0 && list1){
        /* don't optimize for luma-only case, since B-frames usually
         * use implicit weights => chroma too. */
        uint8_t *tmp_cb = s->obmc_scratchpad;
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        uint8_t *tmp_cr = s->obmc_scratchpad + 8;
        uint8_t *tmp_y  = s->obmc_scratchpad + 8*h->mb_uvlinesize;
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        int refn0 = h->ref_cache[0][ scan8[n] ];
        int refn1 = h->ref_cache[1][ scan8[n] ];

        mc_dir_part(h, &h->ref_list[0][refn0], n, square, chroma_height, delta, 0,
                    dest_y, dest_cb, dest_cr,
                    x_offset, y_offset, qpix_put, chroma_put);
        mc_dir_part(h, &h->ref_list[1][refn1], n, square, chroma_height, delta, 1,
                    tmp_y, tmp_cb, tmp_cr,
                    x_offset, y_offset, qpix_put, chroma_put);

        if(h->use_weight == 2){
            int weight0 = h->implicit_weight[refn0][refn1];
            int weight1 = 64 - weight0;
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            luma_weight_avg(  dest_y,  tmp_y,  h->  mb_linesize, 5, weight0, weight1, 0);
            chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, 5, weight0, weight1, 0);
            chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, 5, weight0, weight1, 0);
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        }else{
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            luma_weight_avg(dest_y, tmp_y, h->mb_linesize, h->luma_log2_weight_denom,
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                            h->luma_weight[0][refn0], h->luma_weight[1][refn1],
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                            h->luma_offset[0][refn0] + h->luma_offset[1][refn1]);
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            chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
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                            h->chroma_weight[0][refn0][0], h->chroma_weight[1][refn1][0],
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                            h->chroma_offset[0][refn0][0] + h->chroma_offset[1][refn1][0]);
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            chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
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                            h->chroma_weight[0][refn0][1], h->chroma_weight[1][refn1][1],
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                            h->chroma_offset[0][refn0][1] + h->chroma_offset[1][refn1][1]);
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        }
    }else{
        int list = list1 ? 1 : 0;
        int refn = h->ref_cache[list][ scan8[n] ];
        Picture *ref= &h->ref_list[list][refn];
        mc_dir_part(h, ref, n, square, chroma_height, delta, list,
                    dest_y, dest_cb, dest_cr, x_offset, y_offset,
                    qpix_put, chroma_put);

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        luma_weight_op(dest_y, h->mb_linesize, h->luma_log2_weight_denom,
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                       h->luma_weight[list][refn], h->luma_offset[list][refn]);
        if(h->use_weight_chroma){
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            chroma_weight_op(dest_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
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                             h->chroma_weight[list][refn][0], h->chroma_offset[list][refn][0]);
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            chroma_weight_op(dest_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
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                             h->chroma_weight[list][refn][1], h->chroma_offset[list][refn][1]);
        }
    }
}

static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
                           int x_offset, int y_offset,
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
                           qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
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                           h264_weight_func *weight_op, h264_biweight_func *weight_avg,
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                           int list0, int list1){
    if((h->use_weight==2 && list0 && list1
        && (h->implicit_weight[ h->ref_cache[0][scan8[n]] ][ h->ref_cache[1][scan8[n]] ] != 32))
       || h->use_weight==1)
        mc_part_weighted(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
                         x_offset, y_offset, qpix_put, chroma_put,
                         weight_op[0], weight_op[3], weight_avg[0], weight_avg[3], list0, list1);
    else
        mc_part_std(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
                    x_offset, y_offset, qpix_put, chroma_put, qpix_avg, chroma_avg, list0, list1);
}

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static inline void prefetch_motion(H264Context *h, int list){
    /* fetch pixels for estimated mv 4 macroblocks ahead
     * optimized for 64byte cache lines */
    MpegEncContext * const s = &h->s;
    const int refn = h->ref_cache[list][scan8[0]];
    if(refn >= 0){
        const int mx= (h->mv_cache[list][scan8[0]][0]>>2) + 16*s->mb_x + 8;
        const int my= (h->mv_cache[list][scan8[0]][1]>>2) + 16*s->mb_y;
        uint8_t **src= h->ref_list[list][refn].data;
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        int off= mx + (my + (s->mb_x&3)*4)*h->mb_linesize + 64;
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        s->dsp.prefetch(src[0]+off, s->linesize, 4);
        off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
        s->dsp.prefetch(src[1]+off, src[2]-src[1], 2);
    }
}

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static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
                      qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
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                      qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg),
                      h264_weight_func *weight_op, h264_biweight_func *weight_avg){
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    MpegEncContext * const s = &h->s;
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    const int mb_xy= h->mb_xy;
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    const int mb_type= s->current_picture.mb_type[mb_xy];
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    assert(IS_INTER(mb_type));
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    prefetch_motion(h, 0);

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    if(IS_16X16(mb_type)){
        mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
                qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
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                &weight_op[0], &weight_avg[0],
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                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
    }else if(IS_16X8(mb_type)){
        mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0,
                qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
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                &weight_op[1], &weight_avg[1],
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                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
        mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4,
                qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
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                &weight_op[1], &weight_avg[1],
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                IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
    }else if(IS_8X16(mb_type)){
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        mc_part(h, 0, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
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                qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
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                &weight_op[2], &weight_avg[2],
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                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
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        mc_part(h, 4, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
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                qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
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                &weight_op[2], &weight_avg[2],
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                IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
    }else{
        int i;
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        assert(IS_8X8(mb_type));

        for(i=0; i<4; i++){
            const int sub_mb_type= h->sub_mb_type[i];
            const int n= 4*i;
            int x_offset= (i&1)<<2;
            int y_offset= (i&2)<<1;

            if(IS_SUB_8X8(sub_mb_type)){
                mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
                    qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
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                    &weight_op[3], &weight_avg[3],
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                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
            }else if(IS_SUB_8X4(sub_mb_type)){
                mc_part(h, n  , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset,
                    qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
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                    &weight_op[4], &weight_avg[4],
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                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
                mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
                    qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
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                    &weight_op[4], &weight_avg[4],
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                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
            }else if(IS_SUB_4X8(sub_mb_type)){
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                mc_part(h, n  , 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
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                    qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
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                    &weight_op[5], &weight_avg[5],
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                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
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                mc_part(h, n+1, 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
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                    qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
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                    &weight_op[5], &weight_avg[5],
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                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
            }else{
                int j;
                assert(IS_SUB_4X4(sub_mb_type));
                for(j=0; j<4; j++){
                    int sub_x_offset= x_offset + 2*(j&1);
                    int sub_y_offset= y_offset +   (j&2);
                    mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
                        qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
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                        &weight_op[6], &weight_avg[6],
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                        IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
                }
            }
        }
    }
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    prefetch_motion(h, 1);
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}

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static av_cold void init_cavlc_level_tab(void){
    int suffix_length, mask;
    unsigned int i;

    for(suffix_length=0; suffix_length<7; suffix_length++){
        for(i=0; i<(1<<LEVEL_TAB_BITS); i++){
            int prefix= LEVEL_TAB_BITS - av_log2(2*i);
            int level_code= (prefix<<suffix_length) + (i>>(LEVEL_TAB_BITS-prefix-1-suffix_length)) - (1<<suffix_length);

            mask= -(level_code&1);
            level_code= (((2+level_code)>>1) ^ mask) - mask;
            if(prefix + 1 + suffix_length <= LEVEL_TAB_BITS){
                cavlc_level_tab[suffix_length][i][0]= level_code;
                cavlc_level_tab[suffix_length][i][1]= prefix + 1 + suffix_length;
            }else if(prefix + 1 <= LEVEL_TAB_BITS){
                cavlc_level_tab[suffix_length][i][0]= prefix+100;
                cavlc_level_tab[suffix_length][i][1]= prefix + 1;
            }else{
                cavlc_level_tab[suffix_length][i][0]= LEVEL_TAB_BITS+100;
                cavlc_level_tab[suffix_length][i][1]= LEVEL_TAB_BITS;
            }
        }
    }
}

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static av_cold void decode_init_vlc(void){
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    static int done = 0;

    if (!done) {
        int i;
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        int offset;
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        done = 1;

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        chroma_dc_coeff_token_vlc.table = chroma_dc_coeff_token_vlc_table;
        chroma_dc_coeff_token_vlc.table_allocated = chroma_dc_coeff_token_vlc_table_size;
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        init_vlc(&chroma_dc_coeff_token_vlc, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 4*5,
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1918
                 &chroma_dc_coeff_token_len [0], 1, 1,
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                 &chroma_dc_coeff_token_bits[0], 1, 1,
                 INIT_VLC_USE_NEW_STATIC);
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1921

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        offset = 0;
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1923
        for(i=0; i<4; i++){
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1924 1925
            coeff_token_vlc[i].table = coeff_token_vlc_tables+offset;
            coeff_token_vlc[i].table_allocated = coeff_token_vlc_tables_size[i];
1926
            init_vlc(&coeff_token_vlc[i], COEFF_TOKEN_VLC_BITS, 4*17,
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1927
                     &coeff_token_len [i][0], 1, 1,
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                     &coeff_token_bits[i][0], 1, 1,
                     INIT_VLC_USE_NEW_STATIC);
            offset += coeff_token_vlc_tables_size[i];
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        }
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        /*
         * This is a one time safety check to make sure that
         * the packed static coeff_token_vlc table sizes
         * were initialized correctly.
         */
1937
        assert(offset == FF_ARRAY_ELEMS(coeff_token_vlc_tables));
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1938 1939

        for(i=0; i<3; i++){
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            chroma_dc_total_zeros_vlc[i].table = chroma_dc_total_zeros_vlc_tables[i];
            chroma_dc_total_zeros_vlc[i].table_allocated = chroma_dc_total_zeros_vlc_tables_size;
            init_vlc(&chroma_dc_total_zeros_vlc[i],
                     CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 4,
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1944
                     &chroma_dc_total_zeros_len [i][0], 1, 1,
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1945 1946
                     &chroma_dc_total_zeros_bits[i][0], 1, 1,
                     INIT_VLC_USE_NEW_STATIC);
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        }
        for(i=0; i<15; i++){
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            total_zeros_vlc[i].table = total_zeros_vlc_tables[i];
            total_zeros_vlc[i].table_allocated = total_zeros_vlc_tables_size;
            init_vlc(&total_zeros_vlc[i],
                     TOTAL_ZEROS_VLC_BITS, 16,
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                     &total_zeros_len [i][0], 1, 1,
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                     &total_zeros_bits[i][0], 1, 1,
                     INIT_VLC_USE_NEW_STATIC);
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        }

        for(i=0; i<6; i++){
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            run_vlc[i].table = run_vlc_tables[i];
            run_vlc[i].table_allocated = run_vlc_tables_size;
            init_vlc(&run_vlc[i],
                     RUN_VLC_BITS, 7,
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1963
                     &run_len [i][0], 1, 1,
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1964 1965
                     &run_bits[i][0], 1, 1,
                     INIT_VLC_USE_NEW_STATIC);
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1966
        }
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1967 1968
        run7_vlc.table = run7_vlc_table,
        run7_vlc.table_allocated = run7_vlc_table_size;
1969
        init_vlc(&run7_vlc, RUN7_VLC_BITS, 16,
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1970
                 &run_len [6][0], 1, 1,
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1971 1972
                 &run_bits[6][0], 1, 1,
                 INIT_VLC_USE_NEW_STATIC);
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1973 1974

        init_cavlc_level_tab();
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    }
}

static void free_tables(H264Context *h){
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1979
    int i;
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    H264Context *hx;
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1981
    av_freep(&h->intra4x4_pred_mode);
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    av_freep(&h->chroma_pred_mode_table);
    av_freep(&h->cbp_table);
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    av_freep(&h->mvd_table[0]);
    av_freep(&h->mvd_table[1]);
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    av_freep(&h->direct_table);
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    av_freep(&h->non_zero_count);
    av_freep(&h->slice_table_base);
    h->slice_table= NULL;
1990

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    av_freep(&h->mb2b_xy);
    av_freep(&h->mb2b8_xy);
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1993

1994
    for(i = 0; i < MAX_THREADS; i++) {
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        hx = h->thread_context[i];
        if(!hx) continue;
        av_freep(&hx->top_borders[1]);
        av_freep(&hx->top_borders[0]);
        av_freep(&hx->s.obmc_scratchpad);
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        av_freep(&hx->rbsp_buffer[1]);
        av_freep(&hx->rbsp_buffer[0]);
        if (i) av_freep(&h->thread_context[i]);
2003
    }
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}

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2006 2007
static void init_dequant8_coeff_table(H264Context *h){
    int i,q,x;
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2008
    const int transpose = (h->s.dsp.h264_idct8_add != ff_h264_idct8_add_c); //FIXME ugly
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    h->dequant8_coeff[0] = h->dequant8_buffer[0];
    h->dequant8_coeff[1] = h->dequant8_buffer[1];

    for(i=0; i<2; i++ ){
        if(i && !memcmp(h->pps.scaling_matrix8[0], h->pps.scaling_matrix8[1], 64*sizeof(uint8_t))){
            h->dequant8_coeff[1] = h->dequant8_buffer[0];
            break;
        }

        for(q=0; q<52; q++){
2019 2020
            int shift = div6[q];
            int idx = rem6[q];
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2021
            for(x=0; x<64; x++)
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                h->dequant8_coeff[i][q][transpose ? (x>>3)|((x&7)<<3) : x] =
                    ((uint32_t)dequant8_coeff_init[idx][ dequant8_coeff_init_scan[((x>>1)&12) | (x&3)] ] *
                    h->pps.scaling_matrix8[i][x]) << shift;
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        }
    }
}

static void init_dequant4_coeff_table(H264Context *h){
    int i,j,q,x;
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    const int transpose = (h->s.dsp.h264_idct_add != ff_h264_idct_add_c); //FIXME ugly
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    for(i=0; i<6; i++ ){
        h->dequant4_coeff[i] = h->dequant4_buffer[i];
        for(j=0; j<i; j++){
            if(!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i], 16*sizeof(uint8_t))){
                h->dequant4_coeff[i] = h->dequant4_buffer[j];
                break;
            }
        }
        if(j<i)
            continue;

        for(q=0; q<52; q++){
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            int shift = div6[q] + 2;
            int idx = rem6[q];
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2046
            for(x=0; x<16; x++)
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                h->dequant4_coeff[i][q][transpose ? (x>>2)|((x<<2)&0xF) : x] =
                    ((uint32_t)dequant4_coeff_init[idx][(x&1) + ((x>>2)&1)] *
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                    h->pps.scaling_matrix4[i][x]) << shift;
        }
    }
}

static void init_dequant_tables(H264Context *h){
    int i,x;
    init_dequant4_coeff_table(h);
    if(h->pps.transform_8x8_mode)
        init_dequant8_coeff_table(h);
    if(h->sps.transform_bypass){
        for(i=0; i<6; i++)
            for(x=0; x<16; x++)
                h->dequant4_coeff[i][0][x] = 1<<6;
        if(h->pps.transform_8x8_mode)
            for(i=0; i<2; i++)
                for(x=0; x<64; x++)
                    h->dequant8_coeff[i][0][x] = 1<<6;
    }
}


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/**
 * allocates tables.
2073
 * needs width/height
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 */
static int alloc_tables(H264Context *h){
    MpegEncContext * const s = &h->s;
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    const int big_mb_num= s->mb_stride * (s->mb_height+1);
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    int x,y;
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2079

2080
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->intra4x4_pred_mode, big_mb_num * 8  * sizeof(uint8_t), fail)
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    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->non_zero_count    , big_mb_num * 16 * sizeof(uint8_t), fail)
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->slice_table_base  , (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base), fail)
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->cbp_table, big_mb_num * sizeof(uint16_t), fail)
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    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t), fail)
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[0], 32*big_mb_num * sizeof(uint16_t), fail);
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[1], 32*big_mb_num * sizeof(uint16_t), fail);
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->direct_table, 32*big_mb_num * sizeof(uint8_t) , fail);
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2091
    memset(h->slice_table_base, -1, (big_mb_num+s->mb_stride)  * sizeof(*h->slice_table_base));
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2092
    h->slice_table= h->slice_table_base + s->mb_stride*2 + 1;
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2093

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    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2b_xy  , big_mb_num * sizeof(uint32_t), fail);
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2b8_xy , big_mb_num * sizeof(uint32_t), fail);
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    for(y=0; y<s->mb_height; y++){
        for(x=0; x<s->mb_width; x++){
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            const int mb_xy= x + y*s->mb_stride;
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            const int b_xy = 4*x + 4*y*h->b_stride;
            const int b8_xy= 2*x + 2*y*h->b8_stride;
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            h->mb2b_xy [mb_xy]= b_xy;
            h->mb2b8_xy[mb_xy]= b8_xy;
        }
    }
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    s->obmc_scratchpad = NULL;

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    if(!h->dequant4_coeff[0])
        init_dequant_tables(h);

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    return 0;
fail:
    free_tables(h);
    return -1;
}

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/**
 * Mimic alloc_tables(), but for every context thread.
 */
static void clone_tables(H264Context *dst, H264Context *src){
    dst->intra4x4_pred_mode       = src->intra4x4_pred_mode;
    dst->non_zero_count           = src->non_zero_count;
    dst->slice_table              = src->slice_table;
    dst->cbp_table                = src->cbp_table;
    dst->mb2b_xy                  = src->mb2b_xy;
    dst->mb2b8_xy                 = src->mb2b8_xy;
    dst->chroma_pred_mode_table   = src->chroma_pred_mode_table;
    dst->mvd_table[0]             = src->mvd_table[0];
    dst->mvd_table[1]             = src->mvd_table[1];
    dst->direct_table             = src->direct_table;

    dst->s.obmc_scratchpad = NULL;
    ff_h264_pred_init(&dst->hpc, src->s.codec_id);
}

/**
 * Init context
 * Allocate buffers which are not shared amongst multiple threads.
 */
static int context_init(H264Context *h){
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    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[0], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[1], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
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    return 0;
fail:
    return -1; // free_tables will clean up for us
}

2150
static av_cold void common_init(H264Context *h){
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    MpegEncContext * const s = &h->s;

    s->width = s->avctx->width;
    s->height = s->avctx->height;
    s->codec_id= s->avctx->codec->id;
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    ff_h264_pred_init(&h->hpc, s->codec_id);
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2158

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    h->dequant_coeff_pps= -1;
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    s->unrestricted_mv=1;
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    s->decode=1; //FIXME
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    dsputil_init(&s->dsp, s->avctx); // needed so that idct permutation is known early

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    memset(h->pps.scaling_matrix4, 16, 6*16*sizeof(uint8_t));
    memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t));
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}

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/**
 * Reset SEI values at the beginning of the frame.
 *
 * @param h H.264 context.
 */
static void reset_sei(H264Context *h) {
    h->sei_recovery_frame_cnt       = -1;
    h->sei_dpb_output_delay         =  0;
    h->sei_cpb_removal_delay        = -1;
    h->sei_buffering_period_present =  0;
}

2181
static av_cold int decode_init(AVCodecContext *avctx){
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    H264Context *h= avctx->priv_data;
    MpegEncContext * const s = &h->s;

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    MPV_decode_defaults(s);
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    s->avctx = avctx;
    common_init(h);

    s->out_format = FMT_H264;
    s->workaround_bugs= avctx->workaround_bugs;

    // set defaults
//    s->decode_mb= ff_h263_decode_mb;
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    s->quarter_sample = 1;
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    if(!avctx->has_b_frames)
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    s->low_delay= 1;
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    if(s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
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        avctx->pix_fmt= PIX_FMT_VDPAU_H264;
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    else
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2202
        avctx->pix_fmt= avctx->get_format(avctx, avctx->codec->pix_fmts);
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    avctx->hwaccel = ff_find_hwaccel(avctx->codec->id, avctx->pix_fmt);
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    avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
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    decode_init_vlc();
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    if(avctx->extradata_size > 0 && avctx->extradata &&
       *(char *)avctx->extradata == 1){
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        h->is_avc = 1;
        h->got_avcC = 0;
2212 2213
    } else {
        h->is_avc = 0;
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    }

2216
    h->thread_context[0] = h;
2217
    h->outputed_poc = INT_MIN;
2218
    h->prev_poc_msb= 1<<16;
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2219
    reset_sei(h);
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    if(avctx->codec_id == CODEC_ID_H264){
        if(avctx->ticks_per_frame == 1){
            s->avctx->time_base.den *=2;
        }
2224
        avctx->ticks_per_frame = 2;
2225
    }
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    return 0;
}

2229
static int frame_start(H264Context *h){
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    MpegEncContext * const s = &h->s;
    int i;

2233 2234
    if(MPV_frame_start(s, s->avctx) < 0)
        return -1;
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2235
    ff_er_frame_start(s);
2236 2237 2238
    /*
     * MPV_frame_start uses pict_type to derive key_frame.
     * This is incorrect for H.264; IDR markings must be used.
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2239
     * Zero here; IDR markings per slice in frame or fields are ORed in later.
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     * See decode_nal_units().
     */
    s->current_picture_ptr->key_frame= 0;
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2243
    s->current_picture_ptr->mmco_reset= 0;
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    assert(s->linesize && s->uvlinesize);

    for(i=0; i<16; i++){
        h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
2249
        h->block_offset[24+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->linesize*((scan8[i] - scan8[0])>>3);
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    }
    for(i=0; i<4; i++){
        h->block_offset[16+i]=
        h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
2254 2255
        h->block_offset[24+16+i]=
        h->block_offset[24+20+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->uvlinesize*((scan8[i] - scan8[0])>>3);
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2256 2257
    }

2258 2259
    /* can't be in alloc_tables because linesize isn't known there.
     * FIXME: redo bipred weight to not require extra buffer? */
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    for(i = 0; i < s->avctx->thread_count; i++)
        if(!h->thread_context[i]->s.obmc_scratchpad)
            h->thread_context[i]->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize);
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2263 2264

    /* some macroblocks will be accessed before they're available */
2265
    if(FRAME_MBAFF || s->avctx->thread_count > 1)
2266
        memset(h->slice_table, -1, (s->mb_height*s->mb_stride-1) * sizeof(*h->slice_table));
2267

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2268
//    s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
2269

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2270
    // We mark the current picture as non-reference after allocating it, so
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    // that if we break out due to an error it can be released automatically
    // in the next MPV_frame_start().
    // SVQ3 as well as most other codecs have only last/next/current and thus
    // get released even with set reference, besides SVQ3 and others do not
    // mark frames as reference later "naturally".
    if(s->codec_id != CODEC_ID_SVQ3)
        s->current_picture_ptr->reference= 0;
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    s->current_picture_ptr->field_poc[0]=
    s->current_picture_ptr->field_poc[1]= INT_MAX;
2281
    assert(s->current_picture_ptr->long_ref==0);
2282

2283
    return 0;
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}

2286
static inline void backup_mb_border(H264Context *h, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr, int linesize, int uvlinesize, int simple){
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    MpegEncContext * const s = &h->s;
    int i;
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    int step    = 1;
    int offset  = 1;
    int uvoffset= 1;
    int top_idx = 1;
    int skiplast= 0;
2294

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    src_y  -=   linesize;
    src_cb -= uvlinesize;
    src_cr -= uvlinesize;

2299 2300 2301 2302 2303 2304 2305
    if(!simple && FRAME_MBAFF){
        if(s->mb_y&1){
            offset  = MB_MBAFF ? 1 : 17;
            uvoffset= MB_MBAFF ? 1 : 9;
            if(!MB_MBAFF){
                *(uint64_t*)(h->top_borders[0][s->mb_x]+ 0)= *(uint64_t*)(src_y +  15*linesize);
                *(uint64_t*)(h->top_borders[0][s->mb_x]+ 8)= *(uint64_t*)(src_y +8+15*linesize);
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                if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
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                    *(uint64_t*)(h->top_borders[0][s->mb_x]+16)= *(uint64_t*)(src_cb+7*uvlinesize);
                    *(uint64_t*)(h->top_borders[0][s->mb_x]+24)= *(uint64_t*)(src_cr+7*uvlinesize);
                }
            }
        }else{
            if(!MB_MBAFF){
                h->left_border[0]= h->top_borders[0][s->mb_x][15];
2314
                if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326
                    h->left_border[34   ]= h->top_borders[0][s->mb_x][16+7  ];
                    h->left_border[34+18]= h->top_borders[0][s->mb_x][16+8+7];
                }
                skiplast= 1;
            }
            offset  =
            uvoffset=
            top_idx = MB_MBAFF ? 0 : 1;
        }
        step= MB_MBAFF ? 2 : 1;
    }

2327
    // There are two lines saved, the line above the the top macroblock of a pair,
2328
    // and the line above the bottom macroblock
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    h->left_border[offset]= h->top_borders[top_idx][s->mb_x][15];
    for(i=1; i<17 - skiplast; i++){
        h->left_border[offset+i*step]= src_y[15+i*  linesize];
2332
    }
2333

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    *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+0)= *(uint64_t*)(src_y +  16*linesize);
    *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+8)= *(uint64_t*)(src_y +8+16*linesize);
2336

2337
    if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2338 2339 2340 2341 2342
        h->left_border[uvoffset+34   ]= h->top_borders[top_idx][s->mb_x][16+7];
        h->left_border[uvoffset+34+18]= h->top_borders[top_idx][s->mb_x][24+7];
        for(i=1; i<9 - skiplast; i++){
            h->left_border[uvoffset+34   +i*step]= src_cb[7+i*uvlinesize];
            h->left_border[uvoffset+34+18+i*step]= src_cr[7+i*uvlinesize];
2343
        }
2344 2345
        *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+16)= *(uint64_t*)(src_cb+8*uvlinesize);
        *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+24)= *(uint64_t*)(src_cr+8*uvlinesize);
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    }
}

2349
static inline void xchg_mb_border(H264Context *h, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr, int linesize, int uvlinesize, int xchg, int simple){
2350 2351 2352
    MpegEncContext * const s = &h->s;
    int temp8, i;
    uint64_t temp64;
2353 2354 2355
    int deblock_left;
    int deblock_top;
    int mb_xy;
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    int step    = 1;
    int offset  = 1;
    int uvoffset= 1;
    int top_idx = 1;

    if(!simple && FRAME_MBAFF){
        if(s->mb_y&1){
            offset  = MB_MBAFF ? 1 : 17;
            uvoffset= MB_MBAFF ? 1 : 9;
        }else{
            offset  =
            uvoffset=
            top_idx = MB_MBAFF ? 0 : 1;
        }
        step= MB_MBAFF ? 2 : 1;
    }
2372 2373

    if(h->deblocking_filter == 2) {
2374
        mb_xy = h->mb_xy;
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        deblock_left = h->slice_table[mb_xy] == h->slice_table[mb_xy - 1];
        deblock_top  = h->slice_table[mb_xy] == h->slice_table[h->top_mb_xy];
    } else {
        deblock_left = (s->mb_x > 0);
2379
        deblock_top =  (s->mb_y > !!MB_FIELD);
2380
    }
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    src_y  -=   linesize + 1;
    src_cb -= uvlinesize + 1;
    src_cr -= uvlinesize + 1;

#define XCHG(a,b,t,xchg)\
t= a;\
if(xchg)\
    a= b;\
b= t;
2391 2392

    if(deblock_left){
2393 2394
        for(i = !deblock_top; i<16; i++){
            XCHG(h->left_border[offset+i*step], src_y [i*  linesize], temp8, xchg);
2395
        }
2396
        XCHG(h->left_border[offset+i*step], src_y [i*  linesize], temp8, 1);
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    }

    if(deblock_top){
2400 2401
        XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+0), *(uint64_t*)(src_y +1), temp64, xchg);
        XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+8), *(uint64_t*)(src_y +9), temp64, 1);
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2402
        if(s->mb_x+1 < s->mb_width){
2403
            XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x+1]), *(uint64_t*)(src_y +17), temp64, 1);
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2404
        }
2405 2406
    }

2407
    if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2408
        if(deblock_left){
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            for(i = !deblock_top; i<8; i++){
                XCHG(h->left_border[uvoffset+34   +i*step], src_cb[i*uvlinesize], temp8, xchg);
                XCHG(h->left_border[uvoffset+34+18+i*step], src_cr[i*uvlinesize], temp8, xchg);
2412
            }
2413 2414
            XCHG(h->left_border[uvoffset+34   +i*step], src_cb[i*uvlinesize], temp8, 1);
            XCHG(h->left_border[uvoffset+34+18+i*step], src_cr[i*uvlinesize], temp8, 1);
2415 2416
        }
        if(deblock_top){
2417 2418
            XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+16), *(uint64_t*)(src_cb+1), temp64, 1);
            XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+24), *(uint64_t*)(src_cr+1), temp64, 1);
2419 2420 2421 2422
        }
    }
}

2423
static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
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    MpegEncContext * const s = &h->s;
    const int mb_x= s->mb_x;
    const int mb_y= s->mb_y;
2427
    const int mb_xy= h->mb_xy;
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    const int mb_type= s->current_picture.mb_type[mb_xy];
    uint8_t  *dest_y, *dest_cb, *dest_cr;
    int linesize, uvlinesize /*dct_offset*/;
    int i;
2432
    int *block_offset = &h->block_offset[0];
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2433
    const int transform_bypass = !simple && (s->qscale == 0 && h->sps.transform_bypass);
2434
    /* is_h264 should always be true if SVQ3 is disabled. */
2435
    const int is_h264 = !CONFIG_SVQ3_DECODER || simple || s->codec_id == CODEC_ID_H264;
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2436
    void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
2437
    void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
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2438

2439 2440 2441
    dest_y  = s->current_picture.data[0] + (mb_x + mb_y * s->linesize  ) * 16;
    dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
    dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
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2442

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2443 2444 2445
    s->dsp.prefetch(dest_y + (s->mb_x&3)*4*s->linesize + 64, s->linesize, 4);
    s->dsp.prefetch(dest_cb + (s->mb_x&7)*s->uvlinesize + 64, dest_cr - dest_cb, 2);

2446
    if (!simple && MB_FIELD) {
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2447 2448
        linesize   = h->mb_linesize   = s->linesize * 2;
        uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
2449
        block_offset = &h->block_offset[24];
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2450
        if(mb_y&1){ //FIXME move out of this function?
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2451
            dest_y -= s->linesize*15;
2452 2453
            dest_cb-= s->uvlinesize*7;
            dest_cr-= s->uvlinesize*7;
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2454
        }
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2455 2456
        if(FRAME_MBAFF) {
            int list;
2457
            for(list=0; list<h->list_count; list++){
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2458 2459 2460 2461
                if(!USES_LIST(mb_type, list))
                    continue;
                if(IS_16X16(mb_type)){
                    int8_t *ref = &h->ref_cache[list][scan8[0]];
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2462
                    fill_rectangle(ref, 4, 4, 8, (16+*ref)^(s->mb_y&1), 1);
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2463 2464 2465 2466
                }else{
                    for(i=0; i<16; i+=4){
                        int ref = h->ref_cache[list][scan8[i]];
                        if(ref >= 0)
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2467
                            fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2, 8, (16+ref)^(s->mb_y&1), 1);
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                    }
                }
            }
        }
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2472
    } else {
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2473 2474
        linesize   = h->mb_linesize   = s->linesize;
        uvlinesize = h->mb_uvlinesize = s->uvlinesize;
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2475 2476
//        dct_offset = s->linesize * 16;
    }
2477

2478
    if (!simple && IS_INTRA_PCM(mb_type)) {
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        for (i=0; i<16; i++) {
            memcpy(dest_y + i*  linesize, h->mb       + i*8, 16);
2481
        }
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        for (i=0; i<8; i++) {
            memcpy(dest_cb+ i*uvlinesize, h->mb + 128 + i*4,  8);
            memcpy(dest_cr+ i*uvlinesize, h->mb + 160 + i*4,  8);
2485
        }
2486 2487
    } else {
        if(IS_INTRA(mb_type)){
2488
            if(h->deblocking_filter)
2489
                xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1, simple);
2490

2491
            if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2492 2493
                h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
                h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
2494
            }
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2495

2496
            if(IS_INTRA4x4(mb_type)){
2497
                if(simple || !s->encoding){
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2498
                    if(IS_8x8DCT(mb_type)){
2499 2500 2501
                        if(transform_bypass){
                            idct_dc_add =
                            idct_add    = s->dsp.add_pixels8;
2502
                        }else{
2503 2504 2505
                            idct_dc_add = s->dsp.h264_idct8_dc_add;
                            idct_add    = s->dsp.h264_idct8_add;
                        }
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                        for(i=0; i<16; i+=4){
                            uint8_t * const ptr= dest_y + block_offset[i];
                            const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
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                            if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
                                h->hpc.pred8x8l_add[dir](ptr, h->mb + i*16, linesize);
                            }else{
2512 2513 2514 2515 2516 2517 2518 2519 2520
                                const int nnz = h->non_zero_count_cache[ scan8[i] ];
                                h->hpc.pred8x8l[ dir ](ptr, (h->topleft_samples_available<<i)&0x8000,
                                                            (h->topright_samples_available<<i)&0x4000, linesize);
                                if(nnz){
                                    if(nnz == 1 && h->mb[i*16])
                                        idct_dc_add(ptr, h->mb + i*16, linesize);
                                    else
                                        idct_add   (ptr, h->mb + i*16, linesize);
                                }
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2521
                            }
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2522
                        }
2523 2524 2525 2526 2527 2528 2529 2530
                    }else{
                        if(transform_bypass){
                            idct_dc_add =
                            idct_add    = s->dsp.add_pixels4;
                        }else{
                            idct_dc_add = s->dsp.h264_idct_dc_add;
                            idct_add    = s->dsp.h264_idct_add;
                        }
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2531 2532 2533
                        for(i=0; i<16; i++){
                            uint8_t * const ptr= dest_y + block_offset[i];
                            const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
2534

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                            if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
                                h->hpc.pred4x4_add[dir](ptr, h->mb + i*16, linesize);
                            }else{
                                uint8_t *topright;
                                int nnz, tr;
                                if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){
                                    const int topright_avail= (h->topright_samples_available<<i)&0x8000;
                                    assert(mb_y || linesize <= block_offset[i]);
                                    if(!topright_avail){
                                        tr= ptr[3 - linesize]*0x01010101;
                                        topright= (uint8_t*) &tr;
                                    }else
                                        topright= ptr + 4 - linesize;
2548
                                }else
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                                    topright= NULL;

                                h->hpc.pred4x4[ dir ](ptr, topright, linesize);
                                nnz = h->non_zero_count_cache[ scan8[i] ];
                                if(nnz){
                                    if(is_h264){
                                        if(nnz == 1 && h->mb[i*16])
                                            idct_dc_add(ptr, h->mb + i*16, linesize);
                                        else
                                            idct_add   (ptr, h->mb + i*16, linesize);
                                    }else
                                        svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
                                }
2562
                            }
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                        }
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                    }
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                }
2566
            }else{
2567
                h->hpc.pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
2568
                if(is_h264){
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2569
                    if(!transform_bypass)
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2570
                        h264_luma_dc_dequant_idct_c(h->mb, s->qscale, h->dequant4_coeff[0][s->qscale][0]);
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2571
                }else
2572
                    svq3_luma_dc_dequant_idct_c(h->mb, s->qscale);
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            }
2574
            if(h->deblocking_filter)
2575
                xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0, simple);
2576
        }else if(is_h264){
2577
            hl_motion(h, dest_y, dest_cb, dest_cr,
2578 2579
                      s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
                      s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
2580
                      s->dsp.weight_h264_pixels_tab, s->dsp.biweight_h264_pixels_tab);
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        }
2582 2583 2584


        if(!IS_INTRA4x4(mb_type)){
2585
            if(is_h264){
2586
                if(IS_INTRA16x16(mb_type)){
2587 2588
                    if(transform_bypass){
                        if(h->sps.profile_idc==244 && (h->intra16x16_pred_mode==VERT_PRED8x8 || h->intra16x16_pred_mode==HOR_PRED8x8)){
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                            h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset, h->mb, linesize);
                        }else{
                            for(i=0; i<16; i++){
                                if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
2593
                                    s->dsp.add_pixels4(dest_y + block_offset[i], h->mb + i*16, linesize);
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                            }
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                        }
                    }else{
                         s->dsp.h264_idct_add16intra(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
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                    }
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                }else if(h->cbp&15){
2600
                    if(transform_bypass){
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                        const int di = IS_8x8DCT(mb_type) ? 4 : 1;
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                        idct_add= IS_8x8DCT(mb_type) ? s->dsp.add_pixels8 : s->dsp.add_pixels4;
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                        for(i=0; i<16; i+=di){
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                            if(h->non_zero_count_cache[ scan8[i] ]){
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                                idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
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                            }
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                        }
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                    }else{
                        if(IS_8x8DCT(mb_type)){
                            s->dsp.h264_idct8_add4(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
                        }else{
                            s->dsp.h264_idct_add16(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
                        }
                    }
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                }
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            }else{
                for(i=0; i<16; i++){
                    if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
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                        uint8_t * const ptr= dest_y + block_offset[i];
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                        svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
                    }
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                }
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            }
        }

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        if((simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)) && (h->cbp&0x30)){
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            uint8_t *dest[2] = {dest_cb, dest_cr};
            if(transform_bypass){
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                if(IS_INTRA(mb_type) && h->sps.profile_idc==244 && (h->chroma_pred_mode==VERT_PRED8x8 || h->chroma_pred_mode==HOR_PRED8x8)){
                    h->hpc.pred8x8_add[h->chroma_pred_mode](dest[0], block_offset + 16, h->mb + 16*16, uvlinesize);
                    h->hpc.pred8x8_add[h->chroma_pred_mode](dest[1], block_offset + 20, h->mb + 20*16, uvlinesize);
                }else{
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                    idct_add = s->dsp.add_pixels4;
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                    for(i=16; i<16+8; i++){
                        if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
                            idct_add   (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
                    }
                }
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            }else{
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                chroma_dc_dequant_idct_c(h->mb + 16*16, h->chroma_qp[0], h->dequant4_coeff[IS_INTRA(mb_type) ? 1:4][h->chroma_qp[0]][0]);
                chroma_dc_dequant_idct_c(h->mb + 16*16+4*16, h->chroma_qp[1], h->dequant4_coeff[IS_INTRA(mb_type) ? 2:5][h->chroma_qp[1]][0]);
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                if(is_h264){
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                    idct_add = s->dsp.h264_idct_add;
                    idct_dc_add = s->dsp.h264_idct_dc_add;
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                    for(i=16; i<16+8; i++){
                        if(h->non_zero_count_cache[ scan8[i] ])
                            idct_add   (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
                        else if(h->mb[i*16])
                            idct_dc_add(dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
                    }
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                }else{
                    for(i=16; i<16+8; i++){
                        if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
                            uint8_t * const ptr= dest[(i&4)>>2] + block_offset[i];
                            svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, chroma_qp[s->qscale + 12] - 12, 2);
                        }
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                    }
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                }
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            }
        }
    }
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    if(h->cbp || IS_INTRA(mb_type))
        s->dsp.clear_blocks(h->mb);

2665
    if(h->deblocking_filter) {
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        backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, simple);
        fill_caches(h, mb_type, 1); //FIXME don't fill stuff which isn't used by filter_mb
        h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]);
        h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]);
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        if (!simple && FRAME_MBAFF) {
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            filter_mb     (h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
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        } else {
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            filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2674
        }
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    }
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}

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/**
 * Process a macroblock; this case avoids checks for expensive uncommon cases.
 */
static void hl_decode_mb_simple(H264Context *h){
    hl_decode_mb_internal(h, 1);
}

/**
 * Process a macroblock; this handles edge cases, such as interlacing.
 */
static void av_noinline hl_decode_mb_complex(H264Context *h){
    hl_decode_mb_internal(h, 0);
}

static void hl_decode_mb(H264Context *h){
    MpegEncContext * const s = &h->s;
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    const int mb_xy= h->mb_xy;
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    const int mb_type= s->current_picture.mb_type[mb_xy];
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    int is_complex = CONFIG_SMALL || h->is_complex || IS_INTRA_PCM(mb_type) || s->qscale == 0;
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    if (is_complex)
        hl_decode_mb_complex(h);
    else hl_decode_mb_simple(h);
}

2703
static void pic_as_field(Picture *pic, const int parity){
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    int i;
    for (i = 0; i < 4; ++i) {
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        if (parity == PICT_BOTTOM_FIELD)
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            pic->data[i] += pic->linesize[i];
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        pic->reference = parity;
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        pic->linesize[i] *= 2;
    }
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    pic->poc= pic->field_poc[parity == PICT_BOTTOM_FIELD];
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}

static int split_field_copy(Picture *dest, Picture *src,
                            int parity, int id_add){
    int match = !!(src->reference & parity);

    if (match) {
        *dest = *src;
2720
        if(parity != PICT_FRAME){
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            pic_as_field(dest, parity);
            dest->pic_id *= 2;
            dest->pic_id += id_add;
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        }
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    }

    return match;
}

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static int build_def_list(Picture *def, Picture **in, int len, int is_long, int sel){
    int i[2]={0};
    int index=0;
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    while(i[0]<len || i[1]<len){
        while(i[0]<len && !(in[ i[0] ] && (in[ i[0] ]->reference & sel)))
            i[0]++;
        while(i[1]<len && !(in[ i[1] ] && (in[ i[1] ]->reference & (sel^3))))
            i[1]++;
        if(i[0] < len){
            in[ i[0] ]->pic_id= is_long ? i[0] : in[ i[0] ]->frame_num;
            split_field_copy(&def[index++], in[ i[0]++ ], sel  , 1);
        }
        if(i[1] < len){
            in[ i[1] ]->pic_id= is_long ? i[1] : in[ i[1] ]->frame_num;
            split_field_copy(&def[index++], in[ i[1]++ ], sel^3, 0);
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        }
    }

2749
    return index;
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}

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static int add_sorted(Picture **sorted, Picture **src, int len, int limit, int dir){
    int i, best_poc;
    int out_i= 0;
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    for(;;){
        best_poc= dir ? INT_MIN : INT_MAX;
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        for(i=0; i<len; i++){
            const int poc= src[i]->poc;
            if(((poc > limit) ^ dir) && ((poc < best_poc) ^ dir)){
                best_poc= poc;
                sorted[out_i]= src[i];
            }
        }
        if(best_poc == (dir ? INT_MIN : INT_MAX))
            break;
        limit= sorted[out_i++]->poc - dir;
    }
    return out_i;
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}

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/**
 * fills the default_ref_list.
 */
static int fill_default_ref_list(H264Context *h){
    MpegEncContext * const s = &h->s;
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    int i, len;
2779

2780
    if(h->slice_type_nos==FF_B_TYPE){
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        Picture *sorted[32];
        int cur_poc, list;
        int lens[2];
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        if(FIELD_PICTURE)
            cur_poc= s->current_picture_ptr->field_poc[ s->picture_structure == PICT_BOTTOM_FIELD ];
        else
            cur_poc= s->current_picture_ptr->poc;
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        for(list= 0; list<2; list++){
            len= add_sorted(sorted    , h->short_ref, h->short_ref_count, cur_poc, 1^list);
            len+=add_sorted(sorted+len, h->short_ref, h->short_ref_count, cur_poc, 0^list);
            assert(len<=32);
            len= build_def_list(h->default_ref_list[list]    , sorted     , len, 0, s->picture_structure);
            len+=build_def_list(h->default_ref_list[list]+len, h->long_ref, 16 , 1, s->picture_structure);
            assert(len<=32);
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            if(len < h->ref_count[list])
                memset(&h->default_ref_list[list][len], 0, sizeof(Picture)*(h->ref_count[list] - len));
            lens[list]= len;
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        }

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        if(lens[0] == lens[1] && lens[1] > 1){
            for(i=0; h->default_ref_list[0][i].data[0] == h->default_ref_list[1][i].data[0] && i<lens[0]; i++);
            if(i == lens[0])
                FFSWAP(Picture, h->default_ref_list[1][0], h->default_ref_list[1][1]);
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        }
    }else{
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        len = build_def_list(h->default_ref_list[0]    , h->short_ref, h->short_ref_count, 0, s->picture_structure);
        len+= build_def_list(h->default_ref_list[0]+len, h-> long_ref, 16                , 1, s->picture_structure);
        assert(len <= 32);
        if(len < h->ref_count[0])
            memset(&h->default_ref_list[0][len], 0, sizeof(Picture)*(h->ref_count[0] - len));
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    }
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#ifdef TRACE
    for (i=0; i<h->ref_count[0]; i++) {
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        tprintf(h->s.avctx, "List0: %s fn:%d 0x%p\n", (h->default_ref_list[0][i].long_ref ? "LT" : "ST"), h->default_ref_list[0][i].pic_id, h->default_ref_list[0][i].data[0]);
2818
    }
2819
    if(h->slice_type_nos==FF_B_TYPE){
2820
        for (i=0; i<h->ref_count[1]; i++) {
2821
            tprintf(h->s.avctx, "List1: %s fn:%d 0x%p\n", (h->default_ref_list[1][i].long_ref ? "LT" : "ST"), h->default_ref_list[1][i].pic_id, h->default_ref_list[1][i].data[0]);
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        }
    }
#endif
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    return 0;
}

2828 2829 2830
static void print_short_term(H264Context *h);
static void print_long_term(H264Context *h);

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/**
 * Extract structure information about the picture described by pic_num in
 * the current decoding context (frame or field). Note that pic_num is
 * picture number without wrapping (so, 0<=pic_num<max_pic_num).
 * @param pic_num picture number for which to extract structure information
 * @param structure one of PICT_XXX describing structure of picture
 *                      with pic_num
 * @return frame number (short term) or long term index of picture
 *         described by pic_num
 */
static int pic_num_extract(H264Context *h, int pic_num, int *structure){
    MpegEncContext * const s = &h->s;

    *structure = s->picture_structure;
    if(FIELD_PICTURE){
        if (!(pic_num & 1))
            /* opposite field */
            *structure ^= PICT_FRAME;
        pic_num >>= 1;
    }

    return pic_num;
}

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static int decode_ref_pic_list_reordering(H264Context *h){
    MpegEncContext * const s = &h->s;
2857
    int list, index, pic_structure;
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    print_short_term(h);
    print_long_term(h);
2861

2862
    for(list=0; list<h->list_count; list++){
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        memcpy(h->ref_list[list], h->default_ref_list[list], sizeof(Picture)*h->ref_count[list]);

        if(get_bits1(&s->gb)){
            int pred= h->curr_pic_num;

            for(index=0; ; index++){
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                unsigned int reordering_of_pic_nums_idc= get_ue_golomb_31(&s->gb);
2870
                unsigned int pic_id;
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                int i;
2872
                Picture *ref = NULL;
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                if(reordering_of_pic_nums_idc==3)
2875
                    break;
2876

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2877
                if(index >= h->ref_count[list]){
2878
                    av_log(h->s.avctx, AV_LOG_ERROR, "reference count overflow\n");
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                    return -1;
                }
2881

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                if(reordering_of_pic_nums_idc<3){
                    if(reordering_of_pic_nums_idc<2){
2884
                        const unsigned int abs_diff_pic_num= get_ue_golomb(&s->gb) + 1;
2885
                        int frame_num;
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2886

2887
                        if(abs_diff_pic_num > h->max_pic_num){
2888
                            av_log(h->s.avctx, AV_LOG_ERROR, "abs_diff_pic_num overflow\n");
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                            return -1;
                        }

                        if(reordering_of_pic_nums_idc == 0) pred-= abs_diff_pic_num;
                        else                                pred+= abs_diff_pic_num;
                        pred &= h->max_pic_num - 1;
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                        frame_num = pic_num_extract(h, pred, &pic_structure);

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                        for(i= h->short_ref_count-1; i>=0; i--){
                            ref = h->short_ref[i];
2900
                            assert(ref->reference);
2901
                            assert(!ref->long_ref);
2902
                            if(
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                                   ref->frame_num == frame_num &&
                                   (ref->reference & pic_structure)
2905
                              )
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                                break;
                        }
2908
                        if(i>=0)
2909
                            ref->pic_id= pred;
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                    }else{
2911
                        int long_idx;
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2912
                        pic_id= get_ue_golomb(&s->gb); //long_term_pic_idx
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                        long_idx= pic_num_extract(h, pic_id, &pic_structure);

                        if(long_idx>31){
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                            av_log(h->s.avctx, AV_LOG_ERROR, "long_term_pic_idx overflow\n");
                            return -1;
                        }
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                        ref = h->long_ref[long_idx];
                        assert(!(ref && !ref->reference));
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                        if(ref && (ref->reference & pic_structure)){
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                            ref->pic_id= pic_id;
                            assert(ref->long_ref);
                            i=0;
                        }else{
                            i=-1;
                        }
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                    }

2931
                    if (i < 0) {
2932
                        av_log(h->s.avctx, AV_LOG_ERROR, "reference picture missing during reorder\n");
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                        memset(&h->ref_list[list][index], 0, sizeof(Picture)); //FIXME
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                    } else {
                        for(i=index; i+1<h->ref_count[list]; i++){
                            if(ref->long_ref == h->ref_list[list][i].long_ref && ref->pic_id == h->ref_list[list][i].pic_id)
                                break;
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                        }
                        for(; i > index; i--){
                            h->ref_list[list][i]= h->ref_list[list][i-1];
                        }
2942
                        h->ref_list[list][index]= *ref;
2943
                        if (FIELD_PICTURE){
2944
                            pic_as_field(&h->ref_list[list][index], pic_structure);
2945
                        }
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                    }
2947
                }else{
2948
                    av_log(h->s.avctx, AV_LOG_ERROR, "illegal reordering_of_pic_nums_idc\n");
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                    return -1;
                }
            }
        }
    }
2954
    for(list=0; list<h->list_count; list++){
2955
        for(index= 0; index < h->ref_count[list]; index++){
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            if(!h->ref_list[list][index].data[0]){
                av_log(h->s.avctx, AV_LOG_ERROR, "Missing reference picture\n");
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                if(h->default_ref_list[list][0].data[0])
                    h->ref_list[list][index]= h->default_ref_list[list][0];
                else
                    return -1;
2962
            }
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        }
    }
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    return 0;
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}

2969
static void fill_mbaff_ref_list(H264Context *h){
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    int list, i, j;
2971
    for(list=0; list<2; list++){ //FIXME try list_count
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        for(i=0; i<h->ref_count[list]; i++){
            Picture *frame = &h->ref_list[list][i];
            Picture *field = &h->ref_list[list][16+2*i];
            field[0] = *frame;
            for(j=0; j<3; j++)
                field[0].linesize[j] <<= 1;
2978
            field[0].reference = PICT_TOP_FIELD;
2979
            field[0].poc= field[0].field_poc[0];
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            field[1] = field[0];
            for(j=0; j<3; j++)
                field[1].data[j] += frame->linesize[j];
2983
            field[1].reference = PICT_BOTTOM_FIELD;
2984
            field[1].poc= field[1].field_poc[1];
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            h->luma_weight[list][16+2*i] = h->luma_weight[list][16+2*i+1] = h->luma_weight[list][i];
            h->luma_offset[list][16+2*i] = h->luma_offset[list][16+2*i+1] = h->luma_offset[list][i];
            for(j=0; j<2; j++){
                h->chroma_weight[list][16+2*i][j] = h->chroma_weight[list][16+2*i+1][j] = h->chroma_weight[list][i][j];
                h->chroma_offset[list][16+2*i][j] = h->chroma_offset[list][16+2*i+1][j] = h->chroma_offset[list][i][j];
            }
        }
    }
    for(j=0; j<h->ref_count[1]; j++){
        for(i=0; i<h->ref_count[0]; i++)
            h->implicit_weight[j][16+2*i] = h->implicit_weight[j][16+2*i+1] = h->implicit_weight[j][i];
        memcpy(h->implicit_weight[16+2*j],   h->implicit_weight[j], sizeof(*h->implicit_weight));
        memcpy(h->implicit_weight[16+2*j+1], h->implicit_weight[j], sizeof(*h->implicit_weight));
    }
}

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static int pred_weight_table(H264Context *h){
    MpegEncContext * const s = &h->s;
    int list, i;
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    int luma_def, chroma_def;
3006

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    h->use_weight= 0;
    h->use_weight_chroma= 0;
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    h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
    h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
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    luma_def = 1<<h->luma_log2_weight_denom;
    chroma_def = 1<<h->chroma_log2_weight_denom;
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    for(list=0; list<2; list++){
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        h->luma_weight_flag[list]   = 0;
        h->chroma_weight_flag[list] = 0;
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        for(i=0; i<h->ref_count[list]; i++){
            int luma_weight_flag, chroma_weight_flag;
3019

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            luma_weight_flag= get_bits1(&s->gb);
            if(luma_weight_flag){
                h->luma_weight[list][i]= get_se_golomb(&s->gb);
                h->luma_offset[list][i]= get_se_golomb(&s->gb);
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3024
                if(   h->luma_weight[list][i] != luma_def
3025
                   || h->luma_offset[list][i] != 0) {
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lorenm committed
3026
                    h->use_weight= 1;
3027 3028
                    h->luma_weight_flag[list]= 1;
                }
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lorenm committed
3029 3030 3031
            }else{
                h->luma_weight[list][i]= luma_def;
                h->luma_offset[list][i]= 0;
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3032 3033
            }

3034
            if(CHROMA){
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3035 3036 3037 3038 3039 3040 3041
                chroma_weight_flag= get_bits1(&s->gb);
                if(chroma_weight_flag){
                    int j;
                    for(j=0; j<2; j++){
                        h->chroma_weight[list][i][j]= get_se_golomb(&s->gb);
                        h->chroma_offset[list][i][j]= get_se_golomb(&s->gb);
                        if(   h->chroma_weight[list][i][j] != chroma_def
3042
                           || h->chroma_offset[list][i][j] != 0) {
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michael committed
3043
                            h->use_weight_chroma= 1;
3044 3045
                            h->chroma_weight_flag[list]= 1;
                        }
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3046 3047 3048 3049 3050 3051 3052
                    }
                }else{
                    int j;
                    for(j=0; j<2; j++){
                        h->chroma_weight[list][i][j]= chroma_def;
                        h->chroma_offset[list][i][j]= 0;
                    }
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3053 3054 3055
                }
            }
        }
3056
        if(h->slice_type_nos != FF_B_TYPE) break;
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3057
    }
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3058
    h->use_weight= h->use_weight || h->use_weight_chroma;
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3059 3060 3061
    return 0;
}

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3062 3063
static void implicit_weight_table(H264Context *h){
    MpegEncContext * const s = &h->s;
3064
    int ref0, ref1, i;
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3065 3066
    int cur_poc = s->current_picture_ptr->poc;

3067 3068 3069 3070 3071
    for (i = 0; i < 2; i++) {
        h->luma_weight_flag[i]   = 0;
        h->chroma_weight_flag[i] = 0;
    }

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3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086
    if(   h->ref_count[0] == 1 && h->ref_count[1] == 1
       && h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2*cur_poc){
        h->use_weight= 0;
        h->use_weight_chroma= 0;
        return;
    }

    h->use_weight= 2;
    h->use_weight_chroma= 2;
    h->luma_log2_weight_denom= 5;
    h->chroma_log2_weight_denom= 5;

    for(ref0=0; ref0 < h->ref_count[0]; ref0++){
        int poc0 = h->ref_list[0][ref0].poc;
        for(ref1=0; ref1 < h->ref_count[1]; ref1++){
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3087
            int poc1 = h->ref_list[1][ref1].poc;
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3088
            int td = av_clip(poc1 - poc0, -128, 127);
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3089
            if(td){
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3090
                int tb = av_clip(cur_poc - poc0, -128, 127);
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3091
                int tx = (16384 + (FFABS(td) >> 1)) / td;
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3092
                int dist_scale_factor = av_clip((tb*tx + 32) >> 6, -1024, 1023) >> 2;
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3093 3094 3095 3096 3097 3098 3099 3100 3101 3102
                if(dist_scale_factor < -64 || dist_scale_factor > 128)
                    h->implicit_weight[ref0][ref1] = 32;
                else
                    h->implicit_weight[ref0][ref1] = 64 - dist_scale_factor;
            }else
                h->implicit_weight[ref0][ref1] = 32;
        }
    }
}

3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114
/**
 * Mark a picture as no longer needed for reference. The refmask
 * argument allows unreferencing of individual fields or the whole frame.
 * If the picture becomes entirely unreferenced, but is being held for
 * display purposes, it is marked as such.
 * @param refmask mask of fields to unreference; the mask is bitwise
 *                anded with the reference marking of pic
 * @return non-zero if pic becomes entirely unreferenced (except possibly
 *         for display purposes) zero if one of the fields remains in
 *         reference
 */
static inline int unreference_pic(H264Context *h, Picture *pic, int refmask){
3115
    int i;
3116 3117 3118
    if (pic->reference &= refmask) {
        return 0;
    } else {
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3119 3120 3121 3122 3123
        for(i = 0; h->delayed_pic[i]; i++)
            if(pic == h->delayed_pic[i]){
                pic->reference=DELAYED_PIC_REF;
                break;
            }
3124 3125
        return 1;
    }
3126 3127
}

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3128
/**
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3129
 * instantaneous decoder refresh.
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3130 3131
 */
static void idr(H264Context *h){
3132
    int i;
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3133

3134
    for(i=0; i<16; i++){
3135
        remove_long(h, i, 0);
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3136
    }
3137
    assert(h->long_ref_count==0);
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3138 3139

    for(i=0; i<h->short_ref_count; i++){
3140
        unreference_pic(h, h->short_ref[i], 0);
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3141 3142 3143
        h->short_ref[i]= NULL;
    }
    h->short_ref_count=0;
3144
    h->prev_frame_num= 0;
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3145 3146 3147
    h->prev_frame_num_offset= 0;
    h->prev_poc_msb=
    h->prev_poc_lsb= 0;
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3148 3149
}

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3150 3151 3152 3153
/* forget old pics after a seek */
static void flush_dpb(AVCodecContext *avctx){
    H264Context *h= avctx->priv_data;
    int i;
3154
    for(i=0; i<MAX_DELAYED_PIC_COUNT; i++) {
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3155 3156
        if(h->delayed_pic[i])
            h->delayed_pic[i]->reference= 0;
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3157
        h->delayed_pic[i]= NULL;
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3158
    }
3159
    h->outputed_poc= INT_MIN;
3160
    h->prev_interlaced_frame = 1;
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3161
    idr(h);
3162 3163
    if(h->s.current_picture_ptr)
        h->s.current_picture_ptr->reference= 0;
3164
    h->s.first_field= 0;
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3165
    reset_sei(h);
3166
    ff_mpeg_flush(avctx);
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3167 3168
}

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3169
/**
3170 3171 3172 3173 3174 3175
 * Find a Picture in the short term reference list by frame number.
 * @param frame_num frame number to search for
 * @param idx the index into h->short_ref where returned picture is found
 *            undefined if no picture found.
 * @return pointer to the found picture, or NULL if no pic with the provided
 *                 frame number is found
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3176
 */
3177
static Picture * find_short(H264Context *h, int frame_num, int *idx){
3178
    MpegEncContext * const s = &h->s;
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3179
    int i;
3180

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3181 3182
    for(i=0; i<h->short_ref_count; i++){
        Picture *pic= h->short_ref[i];
3183
        if(s->avctx->debug&FF_DEBUG_MMCO)
3184
            av_log(h->s.avctx, AV_LOG_DEBUG, "%d %d %p\n", i, pic->frame_num, pic);
3185 3186
        if(pic->frame_num == frame_num) {
            *idx = i;
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3187 3188 3189 3190 3191 3192
            return pic;
        }
    }
    return NULL;
}

3193 3194 3195 3196 3197 3198 3199
/**
 * Remove a picture from the short term reference list by its index in
 * that list.  This does no checking on the provided index; it is assumed
 * to be valid. Other list entries are shifted down.
 * @param i index into h->short_ref of picture to remove.
 */
static void remove_short_at_index(H264Context *h, int i){
3200
    assert(i >= 0 && i < h->short_ref_count);
3201 3202 3203 3204 3205 3206 3207 3208 3209
    h->short_ref[i]= NULL;
    if (--h->short_ref_count)
        memmove(&h->short_ref[i], &h->short_ref[i+1], (h->short_ref_count - i)*sizeof(Picture*));
}

/**
 *
 * @return the removed picture or NULL if an error occurs
 */
3210
static Picture * remove_short(H264Context *h, int frame_num, int ref_mask){
3211 3212 3213 3214 3215 3216 3217 3218
    MpegEncContext * const s = &h->s;
    Picture *pic;
    int i;

    if(s->avctx->debug&FF_DEBUG_MMCO)
        av_log(h->s.avctx, AV_LOG_DEBUG, "remove short %d count %d\n", frame_num, h->short_ref_count);

    pic = find_short(h, frame_num, &i);
3219 3220
    if (pic){
        if(unreference_pic(h, pic, ref_mask))
3221
        remove_short_at_index(h, i);
3222
    }
3223 3224 3225 3226

    return pic;
}

3227 3228
/**
 * Remove a picture from the long term reference list by its index in
3229
 * that list.
3230
 * @return the removed picture or NULL if an error occurs
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3231
 */
3232
static Picture * remove_long(H264Context *h, int i, int ref_mask){
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3233 3234 3235
    Picture *pic;

    pic= h->long_ref[i];
3236
    if (pic){
3237 3238 3239 3240 3241 3242
        if(unreference_pic(h, pic, ref_mask)){
            assert(h->long_ref[i]->long_ref == 1);
            h->long_ref[i]->long_ref= 0;
            h->long_ref[i]= NULL;
            h->long_ref_count--;
        }
3243
    }
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3244 3245 3246 3247

    return pic;
}

3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277
/**
 * print short term list
 */
static void print_short_term(H264Context *h) {
    uint32_t i;
    if(h->s.avctx->debug&FF_DEBUG_MMCO) {
        av_log(h->s.avctx, AV_LOG_DEBUG, "short term list:\n");
        for(i=0; i<h->short_ref_count; i++){
            Picture *pic= h->short_ref[i];
            av_log(h->s.avctx, AV_LOG_DEBUG, "%d fn:%d poc:%d %p\n", i, pic->frame_num, pic->poc, pic->data[0]);
        }
    }
}

/**
 * print long term list
 */
static void print_long_term(H264Context *h) {
    uint32_t i;
    if(h->s.avctx->debug&FF_DEBUG_MMCO) {
        av_log(h->s.avctx, AV_LOG_DEBUG, "long term list:\n");
        for(i = 0; i < 16; i++){
            Picture *pic= h->long_ref[i];
            if (pic) {
                av_log(h->s.avctx, AV_LOG_DEBUG, "%d fn:%d poc:%d %p\n", i, pic->frame_num, pic->poc, pic->data[0]);
            }
        }
    }
}

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3278 3279 3280 3281 3282
/**
 * Executes the reference picture marking (memory management control operations).
 */
static int execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count){
    MpegEncContext * const s = &h->s;
3283
    int i, av_uninit(j);
3284
    int current_ref_assigned=0;
3285
    Picture *av_uninit(pic);
3286

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3287
    if((s->avctx->debug&FF_DEBUG_MMCO) && mmco_count==0)
3288
        av_log(h->s.avctx, AV_LOG_DEBUG, "no mmco here\n");
3289

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3290
    for(i=0; i<mmco_count; i++){
3291
        int av_uninit(structure), av_uninit(frame_num);
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3292
        if(s->avctx->debug&FF_DEBUG_MMCO)
3293
            av_log(h->s.avctx, AV_LOG_DEBUG, "mmco:%d %d %d\n", h->mmco[i].opcode, h->mmco[i].short_pic_num, h->mmco[i].long_arg);
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3294

3295 3296 3297 3298 3299
        if(   mmco[i].opcode == MMCO_SHORT2UNUSED
           || mmco[i].opcode == MMCO_SHORT2LONG){
            frame_num = pic_num_extract(h, mmco[i].short_pic_num, &structure);
            pic = find_short(h, frame_num, &j);
            if(!pic){
3300 3301
                if(mmco[i].opcode != MMCO_SHORT2LONG || !h->long_ref[mmco[i].long_arg]
                   || h->long_ref[mmco[i].long_arg]->frame_num != frame_num)
3302 3303 3304 3305 3306
                av_log(h->s.avctx, AV_LOG_ERROR, "mmco: unref short failure\n");
                continue;
            }
        }

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3307 3308
        switch(mmco[i].opcode){
        case MMCO_SHORT2UNUSED:
3309 3310
            if(s->avctx->debug&FF_DEBUG_MMCO)
                av_log(h->s.avctx, AV_LOG_DEBUG, "mmco: unref short %d count %d\n", h->mmco[i].short_pic_num, h->short_ref_count);
3311
            remove_short(h, frame_num, structure ^ PICT_FRAME);
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3312 3313
            break;
        case MMCO_SHORT2LONG:
3314 3315
                if (h->long_ref[mmco[i].long_arg] != pic)
                    remove_long(h, mmco[i].long_arg, 0);
3316

3317 3318
                remove_short_at_index(h, j);
                h->long_ref[ mmco[i].long_arg ]= pic;
3319 3320 3321 3322
                if (h->long_ref[ mmco[i].long_arg ]){
                    h->long_ref[ mmco[i].long_arg ]->long_ref=1;
                    h->long_ref_count++;
                }
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3323 3324
            break;
        case MMCO_LONG2UNUSED:
3325 3326 3327
            j = pic_num_extract(h, mmco[i].long_arg, &structure);
            pic = h->long_ref[j];
            if (pic) {
3328
                remove_long(h, j, structure ^ PICT_FRAME);
3329 3330
            } else if(s->avctx->debug&FF_DEBUG_MMCO)
                av_log(h->s.avctx, AV_LOG_DEBUG, "mmco: unref long failure\n");
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3331 3332
            break;
        case MMCO_LONG:
3333
                    // Comment below left from previous code as it is an interresting note.
3334 3335
                    /* First field in pair is in short term list or
                     * at a different long term index.
3336
                     * This is not allowed; see 7.4.3.3, notes 2 and 3.
3337 3338 3339 3340
                     * Report the problem and keep the pair where it is,
                     * and mark this field valid.
                     */

3341
            if (h->long_ref[mmco[i].long_arg] != s->current_picture_ptr) {
3342
                remove_long(h, mmco[i].long_arg, 0);
3343

3344 3345 3346
                h->long_ref[ mmco[i].long_arg ]= s->current_picture_ptr;
                h->long_ref[ mmco[i].long_arg ]->long_ref=1;
                h->long_ref_count++;
3347
            }
3348

3349
            s->current_picture_ptr->reference |= s->picture_structure;
3350
            current_ref_assigned=1;
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3351 3352
            break;
        case MMCO_SET_MAX_LONG:
3353
            assert(mmco[i].long_arg <= 16);
3354
            // just remove the long term which index is greater than new max
3355
            for(j = mmco[i].long_arg; j<16; j++){
3356
                remove_long(h, j, 0);
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3357 3358 3359 3360
            }
            break;
        case MMCO_RESET:
            while(h->short_ref_count){
3361
                remove_short(h, h->short_ref[0]->frame_num, 0);
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michaelni committed
3362
            }
3363
            for(j = 0; j < 16; j++) {
3364
                remove_long(h, j, 0);
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3365
            }
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3366 3367 3368 3369 3370 3371
            s->current_picture_ptr->poc=
            s->current_picture_ptr->field_poc[0]=
            s->current_picture_ptr->field_poc[1]=
            h->poc_lsb=
            h->poc_msb=
            h->frame_num=
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3372
            s->current_picture_ptr->frame_num= 0;
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cehoyos committed
3373
            s->current_picture_ptr->mmco_reset=1;
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3374 3375 3376 3377
            break;
        default: assert(0);
        }
    }
3378

3379
    if (!current_ref_assigned) {
3380 3381 3382 3383
        /* Second field of complementary field pair; the first field of
         * which is already referenced. If short referenced, it
         * should be first entry in short_ref. If not, it must exist
         * in long_ref; trying to put it on the short list here is an
3384
         * error in the encoded bit stream (ref: 7.4.3.3, NOTE 2 and 3).
3385 3386 3387 3388 3389 3390 3391 3392 3393 3394
         */
        if (h->short_ref_count && h->short_ref[0] == s->current_picture_ptr) {
            /* Just mark the second field valid */
            s->current_picture_ptr->reference = PICT_FRAME;
        } else if (s->current_picture_ptr->long_ref) {
            av_log(h->s.avctx, AV_LOG_ERROR, "illegal short term reference "
                                             "assignment for second field "
                                             "in complementary field pair "
                                             "(first field is long term)\n");
        } else {
3395
            pic= remove_short(h, s->current_picture_ptr->frame_num, 0);
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3396 3397 3398
            if(pic){
                av_log(h->s.avctx, AV_LOG_ERROR, "illegal short term buffer state detected\n");
            }
3399

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michael committed
3400 3401
            if(h->short_ref_count)
                memmove(&h->short_ref[1], &h->short_ref[0], h->short_ref_count*sizeof(Picture*));
3402

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3403 3404 3405 3406
            h->short_ref[0]= s->current_picture_ptr;
            h->short_ref_count++;
            s->current_picture_ptr->reference |= s->picture_structure;
        }
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michael committed
3407
    }
3408

3409
    if (h->long_ref_count + h->short_ref_count > h->sps.ref_frame_count){
3410 3411 3412 3413 3414 3415 3416 3417 3418

        /* We have too many reference frames, probably due to corrupted
         * stream. Need to discard one frame. Prevents overrun of the
         * short_ref and long_ref buffers.
         */
        av_log(h->s.avctx, AV_LOG_ERROR,
               "number of reference frames exceeds max (probably "
               "corrupt input), discarding one\n");

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3419
        if (h->long_ref_count && !h->short_ref_count) {
3420 3421 3422 3423 3424
            for (i = 0; i < 16; ++i)
                if (h->long_ref[i])
                    break;

            assert(i < 16);
3425
            remove_long(h, i, 0);
3426
        } else {
3427
            pic = h->short_ref[h->short_ref_count - 1];
3428
            remove_short(h, pic->frame_num, 0);
3429 3430 3431
        }
    }

3432 3433
    print_short_term(h);
    print_long_term(h);
3434
    return 0;
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3435 3436
}

3437
static int decode_ref_pic_marking(H264Context *h, GetBitContext *gb){
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3438 3439
    MpegEncContext * const s = &h->s;
    int i;
3440

3441
    h->mmco_index= 0;
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michaelni committed
3442
    if(h->nal_unit_type == NAL_IDR_SLICE){ //FIXME fields
3443
        s->broken_link= get_bits1(gb) -1;
3444
        if(get_bits1(gb)){
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3445
            h->mmco[0].opcode= MMCO_LONG;
3446
            h->mmco[0].long_arg= 0;
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michaelni committed
3447
            h->mmco_index= 1;
3448
        }
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michaelni committed
3449
    }else{
3450
        if(get_bits1(gb)){ // adaptive_ref_pic_marking_mode_flag
3451
            for(i= 0; i<MAX_MMCO_COUNT; i++) {
3452
                MMCOOpcode opcode= get_ue_golomb_31(gb);
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michaelni committed
3453 3454 3455

                h->mmco[i].opcode= opcode;
                if(opcode==MMCO_SHORT2UNUSED || opcode==MMCO_SHORT2LONG){
3456
                    h->mmco[i].short_pic_num= (h->curr_pic_num - get_ue_golomb(gb) - 1) & (h->max_pic_num - 1);
3457
/*                    if(h->mmco[i].short_pic_num >= h->short_ref_count || h->short_ref[ h->mmco[i].short_pic_num ] == NULL){
3458
                        av_log(s->avctx, AV_LOG_ERROR, "illegal short ref in memory management control operation %d\n", mmco);
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3459 3460 3461 3462
                        return -1;
                    }*/
                }
                if(opcode==MMCO_SHORT2LONG || opcode==MMCO_LONG2UNUSED || opcode==MMCO_LONG || opcode==MMCO_SET_MAX_LONG){
3463
                    unsigned int long_arg= get_ue_golomb_31(gb);
3464
                    if(long_arg >= 32 || (long_arg >= 16 && !(opcode == MMCO_LONG2UNUSED && FIELD_PICTURE))){
3465
                        av_log(h->s.avctx, AV_LOG_ERROR, "illegal long ref in memory management control operation %d\n", opcode);
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3466 3467
                        return -1;
                    }
3468
                    h->mmco[i].long_arg= long_arg;
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3469
                }
3470

3471
                if(opcode > (unsigned)MMCO_LONG){
3472
                    av_log(h->s.avctx, AV_LOG_ERROR, "illegal memory management control operation %d\n", opcode);
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3473 3474
                    return -1;
                }
3475 3476
                if(opcode == MMCO_END)
                    break;
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            }
            h->mmco_index= i;
        }else{
            assert(h->long_ref_count + h->short_ref_count <= h->sps.ref_frame_count);

3482
            if(h->short_ref_count && h->long_ref_count + h->short_ref_count == h->sps.ref_frame_count &&
3483
                    !(FIELD_PICTURE && !s->first_field && s->current_picture_ptr->reference)) {
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3484
                h->mmco[0].opcode= MMCO_SHORT2UNUSED;
3485
                h->mmco[0].short_pic_num= h->short_ref[ h->short_ref_count - 1 ]->frame_num;
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                h->mmco_index= 1;
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                if (FIELD_PICTURE) {
                    h->mmco[0].short_pic_num *= 2;
                    h->mmco[1].opcode= MMCO_SHORT2UNUSED;
                    h->mmco[1].short_pic_num= h->mmco[0].short_pic_num + 1;
                    h->mmco_index= 2;
                }
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            }
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        }
    }
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    return 0;
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}

static int init_poc(H264Context *h){
    MpegEncContext * const s = &h->s;
    const int max_frame_num= 1<<h->sps.log2_max_frame_num;
    int field_poc[2];
3504
    Picture *cur = s->current_picture_ptr;
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3506
    h->frame_num_offset= h->prev_frame_num_offset;
3507
    if(h->frame_num < h->prev_frame_num)
3508
        h->frame_num_offset += max_frame_num;
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    if(h->sps.poc_type==0){
        const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;

        if     (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
            h->poc_msb = h->prev_poc_msb + max_poc_lsb;
        else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
            h->poc_msb = h->prev_poc_msb - max_poc_lsb;
        else
            h->poc_msb = h->prev_poc_msb;
//printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
3520
        field_poc[0] =
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        field_poc[1] = h->poc_msb + h->poc_lsb;
3522
        if(s->picture_structure == PICT_FRAME)
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            field_poc[1] += h->delta_poc_bottom;
    }else if(h->sps.poc_type==1){
        int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
        int i;

        if(h->sps.poc_cycle_length != 0)
            abs_frame_num = h->frame_num_offset + h->frame_num;
        else
            abs_frame_num = 0;

        if(h->nal_ref_idc==0 && abs_frame_num > 0)
            abs_frame_num--;
3535

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        expected_delta_per_poc_cycle = 0;
        for(i=0; i < h->sps.poc_cycle_length; i++)
            expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse

        if(abs_frame_num > 0){
            int poc_cycle_cnt          = (abs_frame_num - 1) / h->sps.poc_cycle_length;
            int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;

            expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
            for(i = 0; i <= frame_num_in_poc_cycle; i++)
                expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
        } else
            expectedpoc = 0;

3550
        if(h->nal_ref_idc == 0)
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            expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
3552

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        field_poc[0] = expectedpoc + h->delta_poc[0];
        field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;

        if(s->picture_structure == PICT_FRAME)
            field_poc[1] += h->delta_poc[1];
    }else{
3559
        int poc= 2*(h->frame_num_offset + h->frame_num);
3560

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        if(!h->nal_ref_idc)
            poc--;
3563

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        field_poc[0]= poc;
        field_poc[1]= poc;
    }
3567

3568
    if(s->picture_structure != PICT_BOTTOM_FIELD)
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        s->current_picture_ptr->field_poc[0]= field_poc[0];
3570
    if(s->picture_structure != PICT_TOP_FIELD)
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        s->current_picture_ptr->field_poc[1]= field_poc[1];
3572
    cur->poc= FFMIN(cur->field_poc[0], cur->field_poc[1]);
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    return 0;
}

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/**
 * initialize scan tables
 */
static void init_scan_tables(H264Context *h){
    MpegEncContext * const s = &h->s;
    int i;
    if(s->dsp.h264_idct_add == ff_h264_idct_add_c){ //FIXME little ugly
        memcpy(h->zigzag_scan, zigzag_scan, 16*sizeof(uint8_t));
        memcpy(h-> field_scan,  field_scan, 16*sizeof(uint8_t));
    }else{
        for(i=0; i<16; i++){
#define T(x) (x>>2) | ((x<<2) & 0xF)
            h->zigzag_scan[i] = T(zigzag_scan[i]);
            h-> field_scan[i] = T( field_scan[i]);
#undef T
        }
    }
    if(s->dsp.h264_idct8_add == ff_h264_idct8_add_c){
3596
        memcpy(h->zigzag_scan8x8,       ff_zigzag_direct,     64*sizeof(uint8_t));
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        memcpy(h->zigzag_scan8x8_cavlc, zigzag_scan8x8_cavlc, 64*sizeof(uint8_t));
        memcpy(h->field_scan8x8,        field_scan8x8,        64*sizeof(uint8_t));
        memcpy(h->field_scan8x8_cavlc,  field_scan8x8_cavlc,  64*sizeof(uint8_t));
    }else{
        for(i=0; i<64; i++){
#define T(x) (x>>3) | ((x&7)<<3)
3603
            h->zigzag_scan8x8[i]       = T(ff_zigzag_direct[i]);
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            h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]);
            h->field_scan8x8[i]        = T(field_scan8x8[i]);
            h->field_scan8x8_cavlc[i]  = T(field_scan8x8_cavlc[i]);
#undef T
        }
    }
    if(h->sps.transform_bypass){ //FIXME same ugly
        h->zigzag_scan_q0          = zigzag_scan;
3612
        h->zigzag_scan8x8_q0       = ff_zigzag_direct;
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        h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
        h->field_scan_q0           = field_scan;
        h->field_scan8x8_q0        = field_scan8x8;
        h->field_scan8x8_cavlc_q0  = field_scan8x8_cavlc;
    }else{
        h->zigzag_scan_q0          = h->zigzag_scan;
        h->zigzag_scan8x8_q0       = h->zigzag_scan8x8;
        h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
        h->field_scan_q0           = h->field_scan;
        h->field_scan8x8_q0        = h->field_scan8x8;
        h->field_scan8x8_cavlc_q0  = h->field_scan8x8_cavlc;
    }
}
3626

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static void field_end(H264Context *h){
    MpegEncContext * const s = &h->s;
    AVCodecContext * const avctx= s->avctx;
    s->mb_y= 0;

    s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_H264;
    s->current_picture_ptr->pict_type= s->pict_type;

    if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
        ff_vdpau_h264_set_reference_frames(s);

    if(!s->dropable) {
        execute_ref_pic_marking(h, h->mmco, h->mmco_index);
        h->prev_poc_msb= h->poc_msb;
        h->prev_poc_lsb= h->poc_lsb;
    }
    h->prev_frame_num_offset= h->frame_num_offset;
    h->prev_frame_num= h->frame_num;

    if (avctx->hwaccel) {
        if (avctx->hwaccel->end_frame(avctx) < 0)
            av_log(avctx, AV_LOG_ERROR, "hardware accelerator failed to decode picture\n");
    }

    if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
        ff_vdpau_h264_picture_complete(s);

    /*
     * FIXME: Error handling code does not seem to support interlaced
     * when slices span multiple rows
     * The ff_er_add_slice calls don't work right for bottom
     * fields; they cause massive erroneous error concealing
     * Error marking covers both fields (top and bottom).
     * This causes a mismatched s->error_count
     * and a bad error table. Further, the error count goes to
     * INT_MAX when called for bottom field, because mb_y is
     * past end by one (callers fault) and resync_mb_y != 0
     * causes problems for the first MB line, too.
     */
    if (!FIELD_PICTURE)
        ff_er_frame_end(s);

    MPV_frame_end(s);
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    h->current_slice=0;
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}

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/**
 * Replicates H264 "master" context to thread contexts.
 */
static void clone_slice(H264Context *dst, H264Context *src)
{
    memcpy(dst->block_offset,     src->block_offset, sizeof(dst->block_offset));
    dst->s.current_picture_ptr  = src->s.current_picture_ptr;
    dst->s.current_picture      = src->s.current_picture;
    dst->s.linesize             = src->s.linesize;
    dst->s.uvlinesize           = src->s.uvlinesize;
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    dst->s.first_field          = src->s.first_field;
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    dst->prev_poc_msb           = src->prev_poc_msb;
    dst->prev_poc_lsb           = src->prev_poc_lsb;
    dst->prev_frame_num_offset  = src->prev_frame_num_offset;
    dst->prev_frame_num         = src->prev_frame_num;
    dst->short_ref_count        = src->short_ref_count;

    memcpy(dst->short_ref,        src->short_ref,        sizeof(dst->short_ref));
    memcpy(dst->long_ref,         src->long_ref,         sizeof(dst->long_ref));
    memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
    memcpy(dst->ref_list,         src->ref_list,         sizeof(dst->ref_list));
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    memcpy(dst->dequant4_coeff,   src->dequant4_coeff,   sizeof(src->dequant4_coeff));
    memcpy(dst->dequant8_coeff,   src->dequant8_coeff,   sizeof(src->dequant8_coeff));
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}

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/**
 * decodes a slice header.
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 * This will also call MPV_common_init() and frame_start() as needed.
3704 3705 3706 3707
 *
 * @param h h264context
 * @param h0 h264 master context (differs from 'h' when doing sliced based parallel decoding)
 *
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3708
 * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded
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3709
 */
3710
static int decode_slice_header(H264Context *h, H264Context *h0){
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    MpegEncContext * const s = &h->s;
3712
    MpegEncContext * const s0 = &h0->s;
3713
    unsigned int first_mb_in_slice;
3714
    unsigned int pps_id;
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3715
    int num_ref_idx_active_override_flag;
3716
    unsigned int slice_type, tmp, i, j;
3717
    int default_ref_list_done = 0;
3718
    int last_pic_structure;
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3719

3720
    s->dropable= h->nal_ref_idc == 0;
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    if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !h->nal_ref_idc){
        s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab;
        s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab;
    }else{
        s->me.qpel_put= s->dsp.put_h264_qpel_pixels_tab;
        s->me.qpel_avg= s->dsp.avg_h264_qpel_pixels_tab;
    }

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    first_mb_in_slice= get_ue_golomb(&s->gb);

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    if(first_mb_in_slice == 0){ //FIXME better field boundary detection
        if(h0->current_slice && FIELD_PICTURE){
            field_end(h);
        }

3737
        h0->current_slice = 0;
3738
        if (!s0->first_field)
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3739
            s->current_picture_ptr= NULL;
3740 3741
    }

3742
    slice_type= get_ue_golomb_31(&s->gb);
3743
    if(slice_type > 9){
3744
        av_log(h->s.avctx, AV_LOG_ERROR, "slice type too large (%d) at %d %d\n", h->slice_type, s->mb_x, s->mb_y);
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3745
        return -1;
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3746
    }
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    if(slice_type > 4){
        slice_type -= 5;
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        h->slice_type_fixed=1;
    }else
        h->slice_type_fixed=0;
3752

3753
    slice_type= golomb_to_pict_type[ slice_type ];
3754
    if (slice_type == FF_I_TYPE
3755
        || (h0->current_slice != 0 && slice_type == h0->last_slice_type) ) {
3756 3757 3758
        default_ref_list_done = 1;
    }
    h->slice_type= slice_type;
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3759
    h->slice_type_nos= slice_type & 3;
3760

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3761
    s->pict_type= h->slice_type; // to make a few old functions happy, it's wrong though
3762
    if (s->pict_type == FF_B_TYPE && s0->last_picture_ptr == NULL) {
3763 3764 3765 3766
        av_log(h->s.avctx, AV_LOG_ERROR,
               "B picture before any references, skipping\n");
        return -1;
    }
3767

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3768
    pps_id= get_ue_golomb(&s->gb);
3769
    if(pps_id>=MAX_PPS_COUNT){
3770
        av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
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        return -1;
    }
3773
    if(!h0->pps_buffers[pps_id]) {
3774
        av_log(h->s.avctx, AV_LOG_ERROR, "non-existing PPS %u referenced\n", pps_id);
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        return -1;
    }
3777
    h->pps= *h0->pps_buffers[pps_id];
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3778

3779
    if(!h0->sps_buffers[h->pps.sps_id]) {
3780
        av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS %u referenced\n", h->pps.sps_id);
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        return -1;
    }
3783
    h->sps = *h0->sps_buffers[h->pps.sps_id];
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3784

3785
    if(h == h0 && h->dequant_coeff_pps != pps_id){
3786
        h->dequant_coeff_pps = pps_id;
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        init_dequant_tables(h);
    }
3789

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    s->mb_width= h->sps.mb_width;
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    s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
3792

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    h->b_stride=  s->mb_width*4;
    h->b8_stride= s->mb_width*2;
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3795

3796
    s->width = 16*s->mb_width - 2*FFMIN(h->sps.crop_right, 7);
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    if(h->sps.frame_mbs_only_flag)
3798
        s->height= 16*s->mb_height - 2*FFMIN(h->sps.crop_bottom, 7);
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    else
3800
        s->height= 16*s->mb_height - 4*FFMIN(h->sps.crop_bottom, 3);
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    if (s->context_initialized
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3803
        && (   s->width != s->avctx->width || s->height != s->avctx->height)) {
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        if(h != h0)
            return -1;   // width / height changed during parallelized decoding
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3806
        free_tables(h);
3807
        flush_dpb(s->avctx);
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        MPV_common_end(s);
    }
    if (!s->context_initialized) {
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        if(h != h0)
            return -1;  // we cant (re-)initialize context during parallel decoding
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        if (MPV_common_init(s) < 0)
            return -1;
3815
        s->first_field = 0;
3816
        h->prev_interlaced_frame = 1;
3817

3818
        init_scan_tables(h);
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        alloc_tables(h);

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        for(i = 1; i < s->avctx->thread_count; i++) {
            H264Context *c;
            c = h->thread_context[i] = av_malloc(sizeof(H264Context));
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            memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext));
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            memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext));
            c->sps = h->sps;
            c->pps = h->pps;
            init_scan_tables(c);
            clone_tables(c, h);
        }

        for(i = 0; i < s->avctx->thread_count; i++)
            if(context_init(h->thread_context[i]) < 0)
                return -1;

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        s->avctx->width = s->width;
        s->avctx->height = s->height;
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        s->avctx->sample_aspect_ratio= h->sps.sar;
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        if(!s->avctx->sample_aspect_ratio.den)
            s->avctx->sample_aspect_ratio.den = 1;
3841

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3842
        if(h->sps.timing_info_present_flag){
3843
            s->avctx->time_base= (AVRational){h->sps.num_units_in_tick, h->sps.time_scale};
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            if(h->x264_build > 0 && h->x264_build < 44)
                s->avctx->time_base.den *= 2;
            av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den,
                      s->avctx->time_base.num, s->avctx->time_base.den, 1<<30);
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        }
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    }

    h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);

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3853
    h->mb_mbaff = 0;
3854
    h->mb_aff_frame = 0;
3855
    last_pic_structure = s0->picture_structure;
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    if(h->sps.frame_mbs_only_flag){
        s->picture_structure= PICT_FRAME;
    }else{
3859
        if(get_bits1(&s->gb)) { //field_pic_flag
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            s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
3861
        } else {
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            s->picture_structure= PICT_FRAME;
3863
            h->mb_aff_frame = h->sps.mb_aff;
3864
        }
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    }
3866
    h->mb_field_decoding_flag= s->picture_structure != PICT_FRAME;
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    if(h0->current_slice == 0){
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        while(h->frame_num !=  h->prev_frame_num &&
              h->frame_num != (h->prev_frame_num+1)%(1<<h->sps.log2_max_frame_num)){
            av_log(NULL, AV_LOG_DEBUG, "Frame num gap %d %d\n", h->frame_num, h->prev_frame_num);
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            if (frame_start(h) < 0)
                return -1;
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            h->prev_frame_num++;
            h->prev_frame_num %= 1<<h->sps.log2_max_frame_num;
            s->current_picture_ptr->frame_num= h->prev_frame_num;
            execute_ref_pic_marking(h, NULL, 0);
        }

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        /* See if we have a decoded first field looking for a pair... */
        if (s0->first_field) {
            assert(s0->current_picture_ptr);
            assert(s0->current_picture_ptr->data[0]);
            assert(s0->current_picture_ptr->reference != DELAYED_PIC_REF);

            /* figure out if we have a complementary field pair */
            if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
                /*
                 * Previous field is unmatched. Don't display it, but let it
                 * remain for reference if marked as such.
                 */
                s0->current_picture_ptr = NULL;
                s0->first_field = FIELD_PICTURE;

            } else {
                if (h->nal_ref_idc &&
                        s0->current_picture_ptr->reference &&
                        s0->current_picture_ptr->frame_num != h->frame_num) {
                    /*
                     * This and previous field were reference, but had
                     * different frame_nums. Consider this field first in
                     * pair. Throw away previous field except for reference
                     * purposes.
                     */
                    s0->first_field = 1;
                    s0->current_picture_ptr = NULL;

                } else {
                    /* Second field in complementary pair */
                    s0->first_field = 0;
                }
            }

        } else {
            /* Frame or first field in a potentially complementary pair */
            assert(!s0->current_picture_ptr);
            s0->first_field = FIELD_PICTURE;
        }

        if((!FIELD_PICTURE || s0->first_field) && frame_start(h) < 0) {
            s0->first_field = 0;
3922
            return -1;
3923
        }
3924 3925 3926 3927 3928 3929
    }
    if(h != h0)
        clone_slice(h, h0);

    s->current_picture_ptr->frame_num= h->frame_num; //FIXME frame_num cleanup

3930
    assert(s->mb_num == s->mb_width * s->mb_height);
3931
    if(first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num ||
3932 3933
       first_mb_in_slice                    >= s->mb_num){
        av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
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        return -1;
    }
3936
    s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
3937 3938 3939
    s->resync_mb_y = s->mb_y = (first_mb_in_slice / s->mb_width) << FIELD_OR_MBAFF_PICTURE;
    if (s->picture_structure == PICT_BOTTOM_FIELD)
        s->resync_mb_y = s->mb_y = s->mb_y + 1;
3940
    assert(s->mb_y < s->mb_height);
3941

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    if(s->picture_structure==PICT_FRAME){
        h->curr_pic_num=   h->frame_num;
        h->max_pic_num= 1<< h->sps.log2_max_frame_num;
    }else{
3946
        h->curr_pic_num= 2*h->frame_num + 1;
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        h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
    }
3949

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3950
    if(h->nal_unit_type == NAL_IDR_SLICE){
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3951
        get_ue_golomb(&s->gb); /* idr_pic_id */
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3952
    }
3953

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3954 3955
    if(h->sps.poc_type==0){
        h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
3956

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        if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
            h->delta_poc_bottom= get_se_golomb(&s->gb);
        }
    }
3961

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    if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
        h->delta_poc[0]= get_se_golomb(&s->gb);
3964

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        if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
            h->delta_poc[1]= get_se_golomb(&s->gb);
    }
3968

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3969
    init_poc(h);
3970

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    if(h->pps.redundant_pic_cnt_present){
        h->redundant_pic_count= get_ue_golomb(&s->gb);
    }

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    //set defaults, might be overridden a few lines later
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    h->ref_count[0]= h->pps.ref_count[0];
    h->ref_count[1]= h->pps.ref_count[1];

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3979
    if(h->slice_type_nos != FF_I_TYPE){
3980
        if(h->slice_type_nos == FF_B_TYPE){
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            h->direct_spatial_mv_pred= get_bits1(&s->gb);
        }
        num_ref_idx_active_override_flag= get_bits1(&s->gb);
3984

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        if(num_ref_idx_active_override_flag){
            h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
3987
            if(h->slice_type_nos==FF_B_TYPE)
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                h->ref_count[1]= get_ue_golomb(&s->gb) + 1;

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            if(h->ref_count[0]-1 > 32-1 || h->ref_count[1]-1 > 32-1){
3991
                av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
3992
                h->ref_count[0]= h->ref_count[1]= 1;
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                return -1;
            }
        }
3996
        if(h->slice_type_nos == FF_B_TYPE)
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            h->list_count= 2;
        else
            h->list_count= 1;
    }else
        h->list_count= 0;
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4002

4003
    if(!default_ref_list_done){
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        fill_default_ref_list(h);
    }

4007
    if(h->slice_type_nos!=FF_I_TYPE && decode_ref_pic_list_reordering(h) < 0)
4008
        return -1;
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4009

4010 4011
    if(h->slice_type_nos!=FF_I_TYPE){
        s->last_picture_ptr= &h->ref_list[0][0];
4012
        ff_copy_picture(&s->last_picture, s->last_picture_ptr);
4013 4014 4015
    }
    if(h->slice_type_nos==FF_B_TYPE){
        s->next_picture_ptr= &h->ref_list[1][0];
4016
        ff_copy_picture(&s->next_picture, s->next_picture_ptr);
4017 4018
    }

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4019
    if(   (h->pps.weighted_pred          && h->slice_type_nos == FF_P_TYPE )
4020
       ||  (h->pps.weighted_bipred_idc==1 && h->slice_type_nos== FF_B_TYPE ) )
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4021
        pred_weight_table(h);
4022
    else if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE)
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4023
        implicit_weight_table(h);
4024
    else {
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        h->use_weight = 0;
4026 4027 4028 4029 4030
        for (i = 0; i < 2; i++) {
            h->luma_weight_flag[i]   = 0;
            h->chroma_weight_flag[i] = 0;
        }
    }
4031

4032
    if(h->nal_ref_idc)
4033
        decode_ref_pic_marking(h0, &s->gb);
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4034

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    if(FRAME_MBAFF)
        fill_mbaff_ref_list(h);

4038 4039 4040 4041
    if(h->slice_type_nos==FF_B_TYPE && !h->direct_spatial_mv_pred)
        direct_dist_scale_factor(h);
    direct_ref_list_init(h);

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4042
    if( h->slice_type_nos != FF_I_TYPE && h->pps.cabac ){
4043
        tmp = get_ue_golomb_31(&s->gb);
4044 4045 4046 4047 4048 4049
        if(tmp > 2){
            av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
            return -1;
        }
        h->cabac_init_idc= tmp;
    }
4050 4051

    h->last_qscale_diff = 0;
4052 4053 4054
    tmp = h->pps.init_qp + get_se_golomb(&s->gb);
    if(tmp>51){
        av_log(s->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
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4055 4056
        return -1;
    }
4057
    s->qscale= tmp;
4058 4059
    h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
    h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
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4060
    //FIXME qscale / qp ... stuff
4061
    if(h->slice_type == FF_SP_TYPE){
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4062
        get_bits1(&s->gb); /* sp_for_switch_flag */
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4063
    }
4064
    if(h->slice_type==FF_SP_TYPE || h->slice_type == FF_SI_TYPE){
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        get_se_golomb(&s->gb); /* slice_qs_delta */
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    }

4068
    h->deblocking_filter = 1;
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    h->slice_alpha_c0_offset = 0;
    h->slice_beta_offset = 0;
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4071
    if( h->pps.deblocking_filter_parameters_present ) {
4072
        tmp= get_ue_golomb_31(&s->gb);
4073 4074 4075 4076 4077
        if(tmp > 2){
            av_log(s->avctx, AV_LOG_ERROR, "deblocking_filter_idc %u out of range\n", tmp);
            return -1;
        }
        h->deblocking_filter= tmp;
4078
        if(h->deblocking_filter < 2)
4079 4080 4081
            h->deblocking_filter^= 1; // 1<->0

        if( h->deblocking_filter ) {
4082 4083
            h->slice_alpha_c0_offset = get_se_golomb(&s->gb) << 1;
            h->slice_beta_offset = get_se_golomb(&s->gb) << 1;
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4084
        }
4085
    }
4086

4087
    if(   s->avctx->skip_loop_filter >= AVDISCARD_ALL
4088
       ||(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY && h->slice_type_nos != FF_I_TYPE)
4089
       ||(s->avctx->skip_loop_filter >= AVDISCARD_BIDIR  && h->slice_type_nos == FF_B_TYPE)
4090 4091 4092
       ||(s->avctx->skip_loop_filter >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
        h->deblocking_filter= 0;

4093
    if(h->deblocking_filter == 1 && h0->max_contexts > 1) {
4094 4095
        if(s->avctx->flags2 & CODEC_FLAG2_FAST) {
            /* Cheat slightly for speed:
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4096
               Do not bother to deblock across slices. */
4097 4098
            h->deblocking_filter = 2;
        } else {
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            h0->max_contexts = 1;
            if(!h0->single_decode_warning) {
                av_log(s->avctx, AV_LOG_INFO, "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n");
                h0->single_decode_warning = 1;
            }
            if(h != h0)
                return 1; // deblocking switched inside frame
4106
        }
4107 4108
    }

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#if 0 //FMO
    if( h->pps.num_slice_groups > 1  && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
        slice_group_change_cycle= get_bits(&s->gb, ?);
#endif

4114 4115
    h0->last_slice_type = slice_type;
    h->slice_num = ++h0->current_slice;
4116 4117 4118
    if(h->slice_num >= MAX_SLICES){
        av_log(s->avctx, AV_LOG_ERROR, "Too many slices, increase MAX_SLICES and recompile\n");
    }
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4119

4120
    for(j=0; j<2; j++){
4121
        int *ref2frm= h->ref2frm[h->slice_num&(MAX_SLICES-1)][j];
4122 4123
        ref2frm[0]=
        ref2frm[1]= -1;
4124
        for(i=0; i<16; i++)
4125 4126
            ref2frm[i+2]= 4*h->ref_list[j][i].frame_num
                          +(h->ref_list[j][i].reference&3);
4127 4128 4129 4130 4131
        ref2frm[18+0]=
        ref2frm[18+1]= -1;
        for(i=16; i<48; i++)
            ref2frm[i+4]= 4*h->ref_list[j][i].frame_num
                          +(h->ref_list[j][i].reference&3);
4132 4133
    }

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4134
    h->emu_edge_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16;
4135
    h->emu_edge_height= (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width;
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4136

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    s->avctx->refs= h->sps.ref_frame_count;

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4139
    if(s->avctx->debug&FF_DEBUG_PICT_INFO){
4140
        av_log(h->s.avctx, AV_LOG_DEBUG, "slice:%d %s mb:%d %c%s%s pps:%u frame:%d poc:%d/%d ref:%d/%d qp:%d loop:%d:%d:%d weight:%d%s %s\n",
4141 4142
               h->slice_num,
               (s->picture_structure==PICT_FRAME ? "F" : s->picture_structure==PICT_TOP_FIELD ? "T" : "B"),
4143
               first_mb_in_slice,
4144
               av_get_pict_type_char(h->slice_type), h->slice_type_fixed ? " fix" : "", h->nal_unit_type == NAL_IDR_SLICE ? " IDR" : "",
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4145 4146 4147 4148
               pps_id, h->frame_num,
               s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
               h->ref_count[0], h->ref_count[1],
               s->qscale,
4149
               h->deblocking_filter, h->slice_alpha_c0_offset/2, h->slice_beta_offset/2,
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               h->use_weight,
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               h->use_weight==1 && h->use_weight_chroma ? "c" : "",
               h->slice_type == FF_B_TYPE ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : ""
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               );
    }

    return 0;
}

/**
 *
 */
static inline int get_level_prefix(GetBitContext *gb){
    unsigned int buf;
    int log;
4165

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    OPEN_READER(re, gb);
    UPDATE_CACHE(re, gb);
    buf=GET_CACHE(re, gb);
4169

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    log= 32 - av_log2(buf);
#ifdef TRACE
    print_bin(buf>>(32-log), log);
4173
    av_log(NULL, AV_LOG_DEBUG, "%5d %2d %3d lpr @%5d in %s get_level_prefix\n", buf>>(32-log), log, log-1, get_bits_count(gb), __FILE__);
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#endif

    LAST_SKIP_BITS(re, gb, log);
    CLOSE_READER(re, gb);

    return log-1;
}

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4182
static inline int get_dct8x8_allowed(H264Context *h){
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    if(h->sps.direct_8x8_inference_flag)
        return !(*(uint64_t*)h->sub_mb_type & ((MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8                )*0x0001000100010001ULL));
    else
        return !(*(uint64_t*)h->sub_mb_type & ((MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8|MB_TYPE_DIRECT2)*0x0001000100010001ULL));
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}

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/**
 * decodes a residual block.
 * @param n block index
 * @param scantable scantable
 * @param max_coeff number of coefficients in the block
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 * @return <0 if an error occurred
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 */
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static int decode_residual(H264Context *h, GetBitContext *gb, DCTELEM *block, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff){
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    MpegEncContext * const s = &h->s;
    static const int coeff_token_table_index[17]= {0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3};
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    int level[16];
    int zeros_left, coeff_num, coeff_token, total_coeff, i, j, trailing_ones, run_before;
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    //FIXME put trailing_onex into the context

    if(n == CHROMA_DC_BLOCK_INDEX){
        coeff_token= get_vlc2(gb, chroma_dc_coeff_token_vlc.table, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 1);
        total_coeff= coeff_token>>2;
4207
    }else{
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        if(n == LUMA_DC_BLOCK_INDEX){
            total_coeff= pred_non_zero_count(h, 0);
            coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
            total_coeff= coeff_token>>2;
        }else{
            total_coeff= pred_non_zero_count(h, n);
            coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
            total_coeff= coeff_token>>2;
            h->non_zero_count_cache[ scan8[n] ]= total_coeff;
        }
    }

    //FIXME set last_non_zero?

    if(total_coeff==0)
        return 0;
4224 4225
    if(total_coeff > (unsigned)max_coeff) {
        av_log(h->s.avctx, AV_LOG_ERROR, "corrupted macroblock %d %d (total_coeff=%d)\n", s->mb_x, s->mb_y, total_coeff);
4226 4227
        return -1;
    }
4228

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    trailing_ones= coeff_token&3;
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    tprintf(h->s.avctx, "trailing:%d, total:%d\n", trailing_ones, total_coeff);
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    assert(total_coeff<=16);
4232

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    i = show_bits(gb, 3);
    skip_bits(gb, trailing_ones);
    level[0] = 1-((i&4)>>1);
    level[1] = 1-((i&2)   );
    level[2] = 1-((i&1)<<1);
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4238

4239
    if(trailing_ones<total_coeff) {
4240
        int mask, prefix;
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        int suffix_length = total_coeff > 10 && trailing_ones < 3;
4242 4243 4244 4245 4246 4247 4248 4249
        int bitsi= show_bits(gb, LEVEL_TAB_BITS);
        int level_code= cavlc_level_tab[suffix_length][bitsi][0];

        skip_bits(gb, cavlc_level_tab[suffix_length][bitsi][1]);
        if(level_code >= 100){
            prefix= level_code - 100;
            if(prefix == LEVEL_TAB_BITS)
                prefix += get_level_prefix(gb);
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4250

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            //first coefficient has suffix_length equal to 0 or 1
            if(prefix<14){ //FIXME try to build a large unified VLC table for all this
                if(suffix_length)
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                    level_code= (prefix<<1) + get_bits1(gb); //part
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                else
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                    level_code= prefix; //part
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            }else if(prefix==14){
                if(suffix_length)
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                    level_code= (prefix<<1) + get_bits1(gb); //part
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                else
                    level_code= prefix + get_bits(gb, 4); //part
            }else{
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                level_code= 30 + get_bits(gb, prefix-3); //part
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                if(prefix>=16)
                    level_code += (1<<(prefix-3))-4096;
            }
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            if(trailing_ones < 3) level_code += 2;
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            suffix_length = 2;
            mask= -(level_code&1);
            level[trailing_ones]= (((2+level_code)>>1) ^ mask) - mask;
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        }else{
            if(trailing_ones < 3) level_code += (level_code>>31)|1;

            suffix_length = 1;
            if(level_code + 3U > 6U)
                suffix_length++;
            level[trailing_ones]= level_code;
        }
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        //remaining coefficients have suffix_length > 0
4283
        for(i=trailing_ones+1;i<total_coeff;i++) {
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            static const unsigned int suffix_limit[7] = {0,3,6,12,24,48,INT_MAX };
            int bitsi= show_bits(gb, LEVEL_TAB_BITS);
            level_code= cavlc_level_tab[suffix_length][bitsi][0];

            skip_bits(gb, cavlc_level_tab[suffix_length][bitsi][1]);
            if(level_code >= 100){
                prefix= level_code - 100;
                if(prefix == LEVEL_TAB_BITS){
                    prefix += get_level_prefix(gb);
                }
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                if(prefix<15){
                    level_code = (prefix<<suffix_length) + get_bits(gb, suffix_length);
                }else{
                    level_code = (15<<suffix_length) + get_bits(gb, prefix-3);
                    if(prefix>=16)
                        level_code += (1<<(prefix-3))-4096;
                }
                mask= -(level_code&1);
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michael committed
4302 4303 4304 4305 4306
                level_code= (((2+level_code)>>1) ^ mask) - mask;
            }
            level[i]= level_code;

            if(suffix_limit[suffix_length] + level_code > 2U*suffix_limit[suffix_length])
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4307 4308
                suffix_length++;
        }
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michaelni committed
4309 4310 4311 4312 4313 4314 4315 4316 4317 4318 4319
    }

    if(total_coeff == max_coeff)
        zeros_left=0;
    else{
        if(n == CHROMA_DC_BLOCK_INDEX)
            zeros_left= get_vlc2(gb, chroma_dc_total_zeros_vlc[ total_coeff-1 ].table, CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 1);
        else
            zeros_left= get_vlc2(gb, total_zeros_vlc[ total_coeff-1 ].table, TOTAL_ZEROS_VLC_BITS, 1);
    }

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4320 4321
    coeff_num = zeros_left + total_coeff - 1;
    j = scantable[coeff_num];
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michaelni committed
4322
    if(n > 24){
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4323 4324 4325 4326 4327 4328 4329 4330 4331 4332 4333
        block[j] = level[0];
        for(i=1;i<total_coeff;i++) {
            if(zeros_left <= 0)
                run_before = 0;
            else if(zeros_left < 7){
                run_before= get_vlc2(gb, run_vlc[zeros_left-1].table, RUN_VLC_BITS, 1);
            }else{
                run_before= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2);
            }
            zeros_left -= run_before;
            coeff_num -= 1 + run_before;
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4334 4335 4336 4337 4338
            j= scantable[ coeff_num ];

            block[j]= level[i];
        }
    }else{
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lorenm committed
4339
        block[j] = (level[0] * qmul[j] + 32)>>6;
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lorenm committed
4340 4341 4342 4343 4344 4345 4346 4347 4348 4349
        for(i=1;i<total_coeff;i++) {
            if(zeros_left <= 0)
                run_before = 0;
            else if(zeros_left < 7){
                run_before= get_vlc2(gb, run_vlc[zeros_left-1].table, RUN_VLC_BITS, 1);
            }else{
                run_before= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2);
            }
            zeros_left -= run_before;
            coeff_num -= 1 + run_before;
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michaelni committed
4350 4351
            j= scantable[ coeff_num ];

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lorenm committed
4352
            block[j]= (level[i] * qmul[j] + 32)>>6;
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michaelni committed
4353 4354
        }
    }
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4355 4356 4357 4358 4359 4360

    if(zeros_left<0){
        av_log(h->s.avctx, AV_LOG_ERROR, "negative number of zero coeffs at %d %d\n", s->mb_x, s->mb_y);
        return -1;
    }

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michaelni committed
4361 4362 4363
    return 0;
}

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lorenm committed
4364 4365
static void predict_field_decoding_flag(H264Context *h){
    MpegEncContext * const s = &h->s;
4366
    const int mb_xy= h->mb_xy;
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4367 4368 4369 4370 4371 4372 4373 4374
    int mb_type = (h->slice_table[mb_xy-1] == h->slice_num)
                ? s->current_picture.mb_type[mb_xy-1]
                : (h->slice_table[mb_xy-s->mb_stride] == h->slice_num)
                ? s->current_picture.mb_type[mb_xy-s->mb_stride]
                : 0;
    h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
}

4375 4376 4377 4378 4379
/**
 * decodes a P_SKIP or B_SKIP macroblock
 */
static void decode_mb_skip(H264Context *h){
    MpegEncContext * const s = &h->s;
4380
    const int mb_xy= h->mb_xy;
4381
    int mb_type=0;
4382

4383 4384 4385
    memset(h->non_zero_count[mb_xy], 0, 16);
    memset(h->non_zero_count_cache + 8, 0, 8*5); //FIXME ugly, remove pfui

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4386
    if(MB_FIELD)
4387
        mb_type|= MB_TYPE_INTERLACED;
4388

4389
    if( h->slice_type_nos == FF_B_TYPE )
4390 4391
    {
        // just for fill_caches. pred_direct_motion will set the real mb_type
4392
        mb_type|= MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2|MB_TYPE_SKIP;
4393

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michael committed
4394
        fill_caches(h, mb_type, 0); //FIXME check what is needed and what not ...
4395
        pred_direct_motion(h, &mb_type);
4396
        mb_type|= MB_TYPE_SKIP;
4397 4398 4399 4400
    }
    else
    {
        int mx, my;
4401
        mb_type|= MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P1L0|MB_TYPE_SKIP;
4402

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michael committed
4403
        fill_caches(h, mb_type, 0); //FIXME check what is needed and what not ...
4404 4405 4406 4407 4408 4409
        pred_pskip_motion(h, &mx, &my);
        fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, 0, 1);
        fill_rectangle(  h->mv_cache[0][scan8[0]], 4, 4, 8, pack16to32(mx,my), 4);
    }

    write_back_motion(h, mb_type);
4410
    s->current_picture.mb_type[mb_xy]= mb_type;
4411 4412
    s->current_picture.qscale_table[mb_xy]= s->qscale;
    h->slice_table[ mb_xy ]= h->slice_num;
4413
    h->prev_mb_skipped= 1;
4414 4415
}

michaelni's avatar
michaelni committed
4416 4417
/**
 * decodes a macroblock
diego's avatar
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4418
 * @returns 0 if OK, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed
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4419
 */
4420
static int decode_mb_cavlc(H264Context *h){
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4421
    MpegEncContext * const s = &h->s;
4422
    int mb_xy;
4423 4424
    int partition_count;
    unsigned int mb_type, cbp;
lorenm's avatar
lorenm committed
4425
    int dct8x8_allowed= h->pps.transform_8x8_mode;
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4426

4427 4428
    mb_xy = h->mb_xy = s->mb_x + s->mb_y*s->mb_stride;

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mbardiaux committed
4429
    tprintf(s->avctx, "pic:%d mb:%d/%d\n", h->frame_num, s->mb_x, s->mb_y);
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4430 4431
    cbp = 0; /* avoid warning. FIXME: find a solution without slowing
                down the code */
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4432
    if(h->slice_type_nos != FF_I_TYPE){
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4433 4434
        if(s->mb_skip_run==-1)
            s->mb_skip_run= get_ue_golomb(&s->gb);
4435

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michaelni committed
4436
        if (s->mb_skip_run--) {
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lorenm committed
4437 4438 4439 4440 4441 4442
            if(FRAME_MBAFF && (s->mb_y&1) == 0){
                if(s->mb_skip_run==0)
                    h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&s->gb);
                else
                    predict_field_decoding_flag(h);
            }
4443
            decode_mb_skip(h);
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4444 4445 4446
            return 0;
        }
    }
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4447 4448 4449
    if(FRAME_MBAFF){
        if( (s->mb_y&1) == 0 )
            h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&s->gb);
4450
    }
4451

4452
    h->prev_mb_skipped= 0;
4453

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4454
    mb_type= get_ue_golomb(&s->gb);
4455
    if(h->slice_type_nos == FF_B_TYPE){
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4456 4457 4458 4459 4460 4461 4462
        if(mb_type < 23){
            partition_count= b_mb_type_info[mb_type].partition_count;
            mb_type=         b_mb_type_info[mb_type].type;
        }else{
            mb_type -= 23;
            goto decode_intra_mb;
        }
4463
    }else if(h->slice_type_nos == FF_P_TYPE){
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michaelni committed
4464 4465 4466 4467 4468 4469 4470 4471
        if(mb_type < 5){
            partition_count= p_mb_type_info[mb_type].partition_count;
            mb_type=         p_mb_type_info[mb_type].type;
        }else{
            mb_type -= 5;
            goto decode_intra_mb;
        }
    }else{
4472 4473 4474
       assert(h->slice_type_nos == FF_I_TYPE);
        if(h->slice_type == FF_SI_TYPE && mb_type)
            mb_type--;
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4475 4476
decode_intra_mb:
        if(mb_type > 25){
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diego committed
4477
            av_log(h->s.avctx, AV_LOG_ERROR, "mb_type %d in %c slice too large at %d %d\n", mb_type, av_get_pict_type_char(h->slice_type), s->mb_x, s->mb_y);
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michaelni committed
4478 4479 4480 4481 4482 4483 4484 4485
            return -1;
        }
        partition_count=0;
        cbp= i_mb_type_info[mb_type].cbp;
        h->intra16x16_pred_mode= i_mb_type_info[mb_type].pred_mode;
        mb_type= i_mb_type_info[mb_type].type;
    }

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lorenm committed
4486
    if(MB_FIELD)
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michaelni committed
4487 4488 4489
        mb_type |= MB_TYPE_INTERLACED;

    h->slice_table[ mb_xy ]= h->slice_num;
4490

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michaelni committed
4491
    if(IS_INTRA_PCM(mb_type)){
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michael committed
4492
        unsigned int x;
4493

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diego committed
4494
        // We assume these blocks are very rare so we do not optimize it.
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michaelni committed
4495
        align_get_bits(&s->gb);
4496

4497
        // The pixels are stored in the same order as levels in h->mb array.
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michael committed
4498 4499
        for(x=0; x < (CHROMA ? 384 : 256); x++){
            ((uint8_t*)h->mb)[x]= get_bits(&s->gb, 8);
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michaelni committed
4500
        }
4501

4502
        // In deblocking, the quantizer is 0
4503
        s->current_picture.qscale_table[mb_xy]= 0;
4504
        // All coeffs are present
4505
        memset(h->non_zero_count[mb_xy], 16, 16);
4506

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lorenm committed
4507
        s->current_picture.mb_type[mb_xy]= mb_type;
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michaelni committed
4508 4509
        return 0;
    }
4510

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lorenm committed
4511 4512 4513 4514 4515
    if(MB_MBAFF){
        h->ref_count[0] <<= 1;
        h->ref_count[1] <<= 1;
    }

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michael committed
4516
    fill_caches(h, mb_type, 0);
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michaelni committed
4517 4518 4519

    //mb_pred
    if(IS_INTRA(mb_type)){
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4520
        int pred_mode;
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michaelni committed
4521
//            init_top_left_availability(h);
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michael committed
4522 4523 4524 4525 4526 4527 4528
        if(IS_INTRA4x4(mb_type)){
            int i;
            int di = 1;
            if(dct8x8_allowed && get_bits1(&s->gb)){
                mb_type |= MB_TYPE_8x8DCT;
                di = 4;
            }
michaelni's avatar
michaelni committed
4529 4530

//                fill_intra4x4_pred_table(h);
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michael committed
4531 4532
            for(i=0; i<16; i+=di){
                int mode= pred_intra_mode(h, i);
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michaelni committed
4533

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michael committed
4534 4535 4536
                if(!get_bits1(&s->gb)){
                    const int rem_mode= get_bits(&s->gb, 3);
                    mode = rem_mode + (rem_mode >= mode);
michaelni's avatar
michaelni committed
4537
                }
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michael committed
4538 4539 4540 4541 4542

                if(di==4)
                    fill_rectangle( &h->intra4x4_pred_mode_cache[ scan8[i] ], 2, 2, 8, mode, 1 );
                else
                    h->intra4x4_pred_mode_cache[ scan8[i] ] = mode;
michaelni's avatar
michaelni committed
4543
            }
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michael committed
4544 4545 4546 4547 4548 4549 4550 4551 4552
            write_back_intra_pred_mode(h);
            if( check_intra4x4_pred_mode(h) < 0)
                return -1;
        }else{
            h->intra16x16_pred_mode= check_intra_pred_mode(h, h->intra16x16_pred_mode);
            if(h->intra16x16_pred_mode < 0)
                return -1;
        }
        if(CHROMA){
4553
            pred_mode= check_intra_pred_mode(h, get_ue_golomb_31(&s->gb));
4554
            if(pred_mode < 0)
michaelni's avatar
michaelni committed
4555
                return -1;
4556
            h->chroma_pred_mode= pred_mode;
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michael committed
4557
        }
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michaelni committed
4558 4559
    }else if(partition_count==4){
        int i, j, sub_partition_count[4], list, ref[2][4];
4560

4561
        if(h->slice_type_nos == FF_B_TYPE){
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michaelni committed
4562
            for(i=0; i<4; i++){
4563
                h->sub_mb_type[i]= get_ue_golomb_31(&s->gb);
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michaelni committed
4564
                if(h->sub_mb_type[i] >=13){
4565
                    av_log(h->s.avctx, AV_LOG_ERROR, "B sub_mb_type %u out of range at %d %d\n", h->sub_mb_type[i], s->mb_x, s->mb_y);
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michaelni committed
4566 4567 4568 4569 4570
                    return -1;
                }
                sub_partition_count[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count;
                h->sub_mb_type[i]=      b_sub_mb_type_info[ h->sub_mb_type[i] ].type;
            }
4571
            if(   IS_DIRECT(h->sub_mb_type[0]) || IS_DIRECT(h->sub_mb_type[1])
4572
               || IS_DIRECT(h->sub_mb_type[2]) || IS_DIRECT(h->sub_mb_type[3])) {
4573
                pred_direct_motion(h, &mb_type);
4574 4575 4576 4577 4578
                h->ref_cache[0][scan8[4]] =
                h->ref_cache[1][scan8[4]] =
                h->ref_cache[0][scan8[12]] =
                h->ref_cache[1][scan8[12]] = PART_NOT_AVAILABLE;
            }
michaelni's avatar
michaelni committed
4579
        }else{
michael's avatar
michael committed
4580
            assert(h->slice_type_nos == FF_P_TYPE); //FIXME SP correct ?
michaelni's avatar
michaelni committed
4581
            for(i=0; i<4; i++){
4582
                h->sub_mb_type[i]= get_ue_golomb_31(&s->gb);
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michaelni committed
4583
                if(h->sub_mb_type[i] >=4){
4584
                    av_log(h->s.avctx, AV_LOG_ERROR, "P sub_mb_type %u out of range at %d %d\n", h->sub_mb_type[i], s->mb_x, s->mb_y);
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4585 4586 4587 4588 4589 4590
                    return -1;
                }
                sub_partition_count[i]= p_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count;
                h->sub_mb_type[i]=      p_sub_mb_type_info[ h->sub_mb_type[i] ].type;
            }
        }
4591

4592
        for(list=0; list<h->list_count; list++){
4593
            int ref_count= IS_REF0(mb_type) ? 1 : h->ref_count[list];
michaelni's avatar
michaelni committed
4594
            for(i=0; i<4; i++){
4595 4596
                if(IS_DIRECT(h->sub_mb_type[i])) continue;
                if(IS_DIR(h->sub_mb_type[i], 0, list)){
4597 4598 4599 4600 4601 4602 4603
                    unsigned int tmp;
                    if(ref_count == 1){
                        tmp= 0;
                    }else if(ref_count == 2){
                        tmp= get_bits1(&s->gb)^1;
                    }else{
                        tmp= get_ue_golomb_31(&s->gb);
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michael committed
4604 4605 4606 4607
                        if(tmp>=ref_count){
                            av_log(h->s.avctx, AV_LOG_ERROR, "ref %u overflow\n", tmp);
                            return -1;
                        }
4608
                    }
4609
                    ref[list][i]= tmp;
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michaelni committed
4610 4611 4612 4613 4614 4615
                }else{
                 //FIXME
                    ref[list][i] = -1;
                }
            }
        }
4616

lorenm's avatar
lorenm committed
4617 4618
        if(dct8x8_allowed)
            dct8x8_allowed = get_dct8x8_allowed(h);
4619

4620
        for(list=0; list<h->list_count; list++){
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michaelni committed
4621
            for(i=0; i<4; i++){
4622 4623 4624 4625
                if(IS_DIRECT(h->sub_mb_type[i])) {
                    h->ref_cache[list][ scan8[4*i] ] = h->ref_cache[list][ scan8[4*i]+1 ];
                    continue;
                }
michaelni's avatar
michaelni committed
4626 4627 4628
                h->ref_cache[list][ scan8[4*i]   ]=h->ref_cache[list][ scan8[4*i]+1 ]=
                h->ref_cache[list][ scan8[4*i]+8 ]=h->ref_cache[list][ scan8[4*i]+9 ]= ref[list][i];

4629
                if(IS_DIR(h->sub_mb_type[i], 0, list)){
michaelni's avatar
michaelni committed
4630 4631 4632 4633 4634 4635 4636 4637 4638
                    const int sub_mb_type= h->sub_mb_type[i];
                    const int block_width= (sub_mb_type & (MB_TYPE_16x16|MB_TYPE_16x8)) ? 2 : 1;
                    for(j=0; j<sub_partition_count[i]; j++){
                        int mx, my;
                        const int index= 4*i + block_width*j;
                        int16_t (* mv_cache)[2]= &h->mv_cache[list][ scan8[index] ];
                        pred_motion(h, index, block_width, list, h->ref_cache[list][ scan8[index] ], &mx, &my);
                        mx += get_se_golomb(&s->gb);
                        my += get_se_golomb(&s->gb);
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mbardiaux committed
4639
                        tprintf(s->avctx, "final mv:%d %d\n", mx, my);
4640

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michaelni committed
4641
                        if(IS_SUB_8X8(sub_mb_type)){
4642
                            mv_cache[ 1 ][0]=
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michaelni committed
4643
                            mv_cache[ 8 ][0]= mv_cache[ 9 ][0]= mx;
4644
                            mv_cache[ 1 ][1]=
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michaelni committed
4645 4646
                            mv_cache[ 8 ][1]= mv_cache[ 9 ][1]= my;
                        }else if(IS_SUB_8X4(sub_mb_type)){
4647 4648
                            mv_cache[ 1 ][0]= mx;
                            mv_cache[ 1 ][1]= my;
michaelni's avatar
michaelni committed
4649
                        }else if(IS_SUB_4X8(sub_mb_type)){
4650 4651
                            mv_cache[ 8 ][0]= mx;
                            mv_cache[ 8 ][1]= my;
michaelni's avatar
michaelni committed
4652
                        }
4653 4654
                        mv_cache[ 0 ][0]= mx;
                        mv_cache[ 0 ][1]= my;
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michaelni committed
4655 4656 4657 4658 4659 4660 4661 4662
                    }
                }else{
                    uint32_t *p= (uint32_t *)&h->mv_cache[list][ scan8[4*i] ][0];
                    p[0] = p[1]=
                    p[8] = p[9]= 0;
                }
            }
        }
4663 4664
    }else if(IS_DIRECT(mb_type)){
        pred_direct_motion(h, &mb_type);
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lorenm committed
4665
        dct8x8_allowed &= h->sps.direct_8x8_inference_flag;
4666
    }else{
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michaelni committed
4667 4668 4669
        int list, mx, my, i;
         //FIXME we should set ref_idx_l? to 0 if we use that later ...
        if(IS_16X16(mb_type)){
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michael committed
4670 4671
            for(list=0; list<h->list_count; list++){
                    unsigned int val;
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michaelni committed
4672
                    if(IS_DIR(mb_type, 0, list)){
4673 4674 4675 4676 4677
                        if(h->ref_count[list]==1){
                            val= 0;
                        }else if(h->ref_count[list]==2){
                            val= get_bits1(&s->gb)^1;
                        }else{
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michael committed
4678 4679 4680 4681 4682
                            val= get_ue_golomb_31(&s->gb);
                            if(val >= h->ref_count[list]){
                                av_log(h->s.avctx, AV_LOG_ERROR, "ref %u overflow\n", val);
                                return -1;
                            }
4683
                        }
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lorenm committed
4684
                    }else
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4685 4686
                        val= LIST_NOT_USED&0xFF;
                    fill_rectangle(&h->ref_cache[list][ scan8[0] ], 4, 4, 8, val, 1);
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michaelni committed
4687
            }
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michael committed
4688 4689
            for(list=0; list<h->list_count; list++){
                unsigned int val;
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michaelni committed
4690 4691 4692 4693
                if(IS_DIR(mb_type, 0, list)){
                    pred_motion(h, 0, 4, list, h->ref_cache[list][ scan8[0] ], &mx, &my);
                    mx += get_se_golomb(&s->gb);
                    my += get_se_golomb(&s->gb);
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mbardiaux committed
4694
                    tprintf(s->avctx, "final mv:%d %d\n", mx, my);
4695

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michael committed
4696
                    val= pack16to32(mx,my);
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lorenm committed
4697
                }else
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michael committed
4698 4699
                    val=0;
                fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, val, 4);
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4700 4701 4702
            }
        }
        else if(IS_16X8(mb_type)){
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4703
            for(list=0; list<h->list_count; list++){
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4704
                    for(i=0; i<2; i++){
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4705
                        unsigned int val;
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4706
                        if(IS_DIR(mb_type, i, list)){
4707 4708 4709 4710 4711
                            if(h->ref_count[list] == 1){
                                val= 0;
                            }else if(h->ref_count[list] == 2){
                                val= get_bits1(&s->gb)^1;
                            }else{
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4712 4713 4714 4715 4716
                                val= get_ue_golomb_31(&s->gb);
                                if(val >= h->ref_count[list]){
                                    av_log(h->s.avctx, AV_LOG_ERROR, "ref %u overflow\n", val);
                                    return -1;
                                }
4717
                            }
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lorenm committed
4718
                        }else
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4719 4720
                            val= LIST_NOT_USED&0xFF;
                        fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, val, 1);
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4721 4722
                    }
            }
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4723
            for(list=0; list<h->list_count; list++){
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4724
                for(i=0; i<2; i++){
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4725
                    unsigned int val;
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4726 4727 4728 4729
                    if(IS_DIR(mb_type, i, list)){
                        pred_16x8_motion(h, 8*i, list, h->ref_cache[list][scan8[0] + 16*i], &mx, &my);
                        mx += get_se_golomb(&s->gb);
                        my += get_se_golomb(&s->gb);
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4730
                        tprintf(s->avctx, "final mv:%d %d\n", mx, my);
4731

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4732
                        val= pack16to32(mx,my);
4733
                    }else
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4734 4735
                        val=0;
                    fill_rectangle(h->mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, val, 4);
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                }
            }
        }else{
            assert(IS_8X16(mb_type));
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4740
            for(list=0; list<h->list_count; list++){
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4741
                    for(i=0; i<2; i++){
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4742
                        unsigned int val;
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4743
                        if(IS_DIR(mb_type, i, list)){ //FIXME optimize
4744 4745 4746 4747 4748
                            if(h->ref_count[list]==1){
                                val= 0;
                            }else if(h->ref_count[list]==2){
                                val= get_bits1(&s->gb)^1;
                            }else{
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4749 4750 4751 4752 4753
                                val= get_ue_golomb_31(&s->gb);
                                if(val >= h->ref_count[list]){
                                    av_log(h->s.avctx, AV_LOG_ERROR, "ref %u overflow\n", val);
                                    return -1;
                                }
4754
                            }
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4755
                        }else
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                            val= LIST_NOT_USED&0xFF;
                        fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, val, 1);
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                    }
            }
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4760
            for(list=0; list<h->list_count; list++){
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4761
                for(i=0; i<2; i++){
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4762
                    unsigned int val;
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                    if(IS_DIR(mb_type, i, list)){
                        pred_8x16_motion(h, i*4, list, h->ref_cache[list][ scan8[0] + 2*i ], &mx, &my);
                        mx += get_se_golomb(&s->gb);
                        my += get_se_golomb(&s->gb);
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4767
                        tprintf(s->avctx, "final mv:%d %d\n", mx, my);
4768

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4769
                        val= pack16to32(mx,my);
4770
                    }else
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                        val=0;
                    fill_rectangle(h->mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, val, 4);
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                }
            }
        }
    }
4777

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    if(IS_INTER(mb_type))
        write_back_motion(h, mb_type);
4780

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    if(!IS_INTRA16x16(mb_type)){
        cbp= get_ue_golomb(&s->gb);
        if(cbp > 47){
4784
            av_log(h->s.avctx, AV_LOG_ERROR, "cbp too large (%u) at %d %d\n", cbp, s->mb_x, s->mb_y);
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            return -1;
        }
4787

4788
        if(CHROMA){
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4789 4790
            if(IS_INTRA4x4(mb_type)) cbp= golomb_to_intra4x4_cbp[cbp];
            else                     cbp= golomb_to_inter_cbp   [cbp];
4791 4792 4793 4794
        }else{
            if(IS_INTRA4x4(mb_type)) cbp= golomb_to_intra4x4_cbp_gray[cbp];
            else                     cbp= golomb_to_inter_cbp_gray[cbp];
        }
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4795
    }
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4796
    h->cbp = cbp;
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4797

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4798
    if(dct8x8_allowed && (cbp&15) && !IS_INTRA(mb_type)){
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4799
        if(get_bits1(&s->gb)){
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4800
            mb_type |= MB_TYPE_8x8DCT;
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4801 4802
            h->cbp_table[mb_xy]= cbp;
        }
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    }
    s->current_picture.mb_type[mb_xy]= mb_type;

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    if(cbp || IS_INTRA16x16(mb_type)){
        int i8x8, i4x4, chroma_idx;
4808
        int dquant;
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4809
        GetBitContext *gb= IS_INTRA(mb_type) ? h->intra_gb_ptr : h->inter_gb_ptr;
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4810
        const uint8_t *scan, *scan8x8, *dc_scan;
4811

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//        fill_non_zero_count_cache(h);

        if(IS_INTERLACED(mb_type)){
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4815
            scan8x8= s->qscale ? h->field_scan8x8_cavlc : h->field_scan8x8_cavlc_q0;
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4816
            scan= s->qscale ? h->field_scan : h->field_scan_q0;
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4817 4818
            dc_scan= luma_dc_field_scan;
        }else{
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4819
            scan8x8= s->qscale ? h->zigzag_scan8x8_cavlc : h->zigzag_scan8x8_cavlc_q0;
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4820
            scan= s->qscale ? h->zigzag_scan : h->zigzag_scan_q0;
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            dc_scan= luma_dc_zigzag_scan;
        }

        dquant= get_se_golomb(&s->gb);

        if( dquant > 25 || dquant < -26 ){
4827
            av_log(h->s.avctx, AV_LOG_ERROR, "dquant out of range (%d) at %d %d\n", dquant, s->mb_x, s->mb_y);
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4828 4829
            return -1;
        }
4830

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4831 4832 4833 4834 4835
        s->qscale += dquant;
        if(((unsigned)s->qscale) > 51){
            if(s->qscale<0) s->qscale+= 52;
            else            s->qscale-= 52;
        }
4836

4837 4838
        h->chroma_qp[0]= get_chroma_qp(h, 0, s->qscale);
        h->chroma_qp[1]= get_chroma_qp(h, 1, s->qscale);
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4839
        if(IS_INTRA16x16(mb_type)){
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4840
            if( decode_residual(h, h->intra_gb_ptr, h->mb, LUMA_DC_BLOCK_INDEX, dc_scan, h->dequant4_coeff[0][s->qscale], 16) < 0){
4841
                return -1; //FIXME continue if partitioned and other return -1 too
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4842 4843 4844 4845 4846 4847 4848 4849
            }

            assert((cbp&15) == 0 || (cbp&15) == 15);

            if(cbp&15){
                for(i8x8=0; i8x8<4; i8x8++){
                    for(i4x4=0; i4x4<4; i4x4++){
                        const int index= i4x4 + 4*i8x8;
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4850
                        if( decode_residual(h, h->intra_gb_ptr, h->mb + 16*index, index, scan + 1, h->dequant4_coeff[0][s->qscale], 15) < 0 ){
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4851 4852 4853 4854 4855
                            return -1;
                        }
                    }
                }
            }else{
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4856
                fill_rectangle(&h->non_zero_count_cache[scan8[0]], 4, 4, 8, 0, 1);
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            }
        }else{
            for(i8x8=0; i8x8<4; i8x8++){
                if(cbp & (1<<i8x8)){
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4861 4862
                    if(IS_8x8DCT(mb_type)){
                        DCTELEM *buf = &h->mb[64*i8x8];
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4863
                        uint8_t *nnz;
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4864
                        for(i4x4=0; i4x4<4; i4x4++){
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4865
                            if( decode_residual(h, gb, buf, i4x4+4*i8x8, scan8x8+16*i4x4,
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4866
                                                h->dequant8_coeff[IS_INTRA( mb_type ) ? 0:1][s->qscale], 16) <0 )
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                                return -1;
                        }
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4869
                        nnz= &h->non_zero_count_cache[ scan8[4*i8x8] ];
4870
                        nnz[0] += nnz[1] + nnz[8] + nnz[9];
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4871 4872 4873
                    }else{
                        for(i4x4=0; i4x4<4; i4x4++){
                            const int index= i4x4 + 4*i8x8;
4874

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lorenm committed
4875
                            if( decode_residual(h, gb, h->mb + 16*index, index, scan, h->dequant4_coeff[IS_INTRA( mb_type ) ? 0:3][s->qscale], 16) <0 ){
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                                return -1;
                            }
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                        }
                    }
                }else{
                    uint8_t * const nnz= &h->non_zero_count_cache[ scan8[4*i8x8] ];
                    nnz[0] = nnz[1] = nnz[8] = nnz[9] = 0;
                }
            }
        }
4886

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4887 4888
        if(cbp&0x30){
            for(chroma_idx=0; chroma_idx<2; chroma_idx++)
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4889
                if( decode_residual(h, gb, h->mb + 256 + 16*4*chroma_idx, CHROMA_DC_BLOCK_INDEX, chroma_dc_scan, NULL, 4) < 0){
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4890 4891 4892 4893 4894 4895
                    return -1;
                }
        }

        if(cbp&0x20){
            for(chroma_idx=0; chroma_idx<2; chroma_idx++){
4896
                const uint32_t *qmul = h->dequant4_coeff[chroma_idx+1+(IS_INTRA( mb_type ) ? 0:3)][h->chroma_qp[chroma_idx]];
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4897 4898
                for(i4x4=0; i4x4<4; i4x4++){
                    const int index= 16 + 4*chroma_idx + i4x4;
4899
                    if( decode_residual(h, gb, h->mb + 16*index, index, scan + 1, qmul, 15) < 0){
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                        return -1;
                    }
                }
            }
        }else{
            uint8_t * const nnz= &h->non_zero_count_cache[0];
            nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] =
            nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0;
        }
    }else{
4910 4911 4912 4913
        uint8_t * const nnz= &h->non_zero_count_cache[0];
        fill_rectangle(&nnz[scan8[0]], 4, 4, 8, 0, 1);
        nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] =
        nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0;
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4914
    }
4915
    s->current_picture.qscale_table[mb_xy]= s->qscale;
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4916 4917
    write_back_non_zero_count(h);

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4918 4919 4920 4921 4922
    if(MB_MBAFF){
        h->ref_count[0] >>= 1;
        h->ref_count[1] >>= 1;
    }

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4923 4924 4925
    return 0;
}

4926 4927 4928 4929 4930 4931 4932 4933
static int decode_cabac_field_decoding_flag(H264Context *h) {
    MpegEncContext * const s = &h->s;
    const int mb_x = s->mb_x;
    const int mb_y = s->mb_y & ~1;
    const int mba_xy = mb_x - 1 +  mb_y   *s->mb_stride;
    const int mbb_xy = mb_x     + (mb_y-2)*s->mb_stride;

    unsigned int ctx = 0;
4934

4935 4936 4937 4938 4939 4940 4941
    if( h->slice_table[mba_xy] == h->slice_num && IS_INTERLACED( s->current_picture.mb_type[mba_xy] ) ) {
        ctx += 1;
    }
    if( h->slice_table[mbb_xy] == h->slice_num && IS_INTERLACED( s->current_picture.mb_type[mbb_xy] ) ) {
        ctx += 1;
    }

4942
    return get_cabac_noinline( &h->cabac, &h->cabac_state[70 + ctx] );
4943 4944
}

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4945 4946 4947
static int decode_cabac_intra_mb_type(H264Context *h, int ctx_base, int intra_slice) {
    uint8_t *state= &h->cabac_state[ctx_base];
    int mb_type;
4948

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4949 4950
    if(intra_slice){
        MpegEncContext * const s = &h->s;
4951 4952
        const int mba_xy = h->left_mb_xy[0];
        const int mbb_xy = h->top_mb_xy;
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4953
        int ctx=0;
4954
        if( h->slice_table[mba_xy] == h->slice_num && !IS_INTRA4x4( s->current_picture.mb_type[mba_xy] ) )
4955
            ctx++;
4956
        if( h->slice_table[mbb_xy] == h->slice_num && !IS_INTRA4x4( s->current_picture.mb_type[mbb_xy] ) )
4957
            ctx++;
4958
        if( get_cabac_noinline( &h->cabac, &state[ctx] ) == 0 )
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4959 4960 4961
            return 0;   /* I4x4 */
        state += 2;
    }else{
4962
        if( get_cabac_noinline( &h->cabac, &state[0] ) == 0 )
4963
            return 0;   /* I4x4 */
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4964
    }
4965

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4966 4967
    if( get_cabac_terminate( &h->cabac ) )
        return 25;  /* PCM */
4968

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4969
    mb_type = 1; /* I16x16 */
4970 4971 4972 4973 4974
    mb_type += 12 * get_cabac_noinline( &h->cabac, &state[1] ); /* cbp_luma != 0 */
    if( get_cabac_noinline( &h->cabac, &state[2] ) ) /* cbp_chroma */
        mb_type += 4 + 4 * get_cabac_noinline( &h->cabac, &state[2+intra_slice] );
    mb_type += 2 * get_cabac_noinline( &h->cabac, &state[3+intra_slice] );
    mb_type += 1 * get_cabac_noinline( &h->cabac, &state[3+2*intra_slice] );
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    return mb_type;
}
4977

4978
static int decode_cabac_mb_type_b( H264Context *h ) {
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4979 4980
    MpegEncContext * const s = &h->s;

4981 4982
        const int mba_xy = h->left_mb_xy[0];
        const int mbb_xy = h->top_mb_xy;
4983 4984
        int ctx = 0;
        int bits;
4985
        assert(h->slice_type_nos == FF_B_TYPE);
4986

4987
        if( h->slice_table[mba_xy] == h->slice_num && !IS_DIRECT( s->current_picture.mb_type[mba_xy] ) )
4988
            ctx++;
4989
        if( h->slice_table[mbb_xy] == h->slice_num && !IS_DIRECT( s->current_picture.mb_type[mbb_xy] ) )
4990 4991
            ctx++;

4992
        if( !get_cabac_noinline( &h->cabac, &h->cabac_state[27+ctx] ) )
4993 4994
            return 0; /* B_Direct_16x16 */

4995 4996
        if( !get_cabac_noinline( &h->cabac, &h->cabac_state[27+3] ) ) {
            return 1 + get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] ); /* B_L[01]_16x16 */
4997 4998
        }

4999 5000 5001 5002
        bits = get_cabac_noinline( &h->cabac, &h->cabac_state[27+4] ) << 3;
        bits|= get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] ) << 2;
        bits|= get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] ) << 1;
        bits|= get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] );
5003 5004 5005
        if( bits < 8 )
            return bits + 3; /* B_Bi_16x16 through B_L1_L0_16x8 */
        else if( bits == 13 ) {
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5006
            return decode_cabac_intra_mb_type(h, 32, 0) + 23;
5007 5008 5009 5010 5011
        } else if( bits == 14 )
            return 11; /* B_L1_L0_8x16 */
        else if( bits == 15 )
            return 22; /* B_8x8 */

5012
        bits= ( bits<<1 ) | get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] );
5013
        return bits - 4; /* B_L0_Bi_* through B_Bi_Bi_* */
5014 5015
}

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5016
static int decode_cabac_mb_skip( H264Context *h, int mb_x, int mb_y ) {
5017
    MpegEncContext * const s = &h->s;
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5018
    int mba_xy, mbb_xy;
5019 5020
    int ctx = 0;

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    if(FRAME_MBAFF){ //FIXME merge with the stuff in fill_caches?
        int mb_xy = mb_x + (mb_y&~1)*s->mb_stride;
        mba_xy = mb_xy - 1;
        if( (mb_y&1)
            && h->slice_table[mba_xy] == h->slice_num
            && MB_FIELD == !!IS_INTERLACED( s->current_picture.mb_type[mba_xy] ) )
            mba_xy += s->mb_stride;
        if( MB_FIELD ){
            mbb_xy = mb_xy - s->mb_stride;
            if( !(mb_y&1)
                && h->slice_table[mbb_xy] == h->slice_num
                && IS_INTERLACED( s->current_picture.mb_type[mbb_xy] ) )
                mbb_xy -= s->mb_stride;
        }else
            mbb_xy = mb_x + (mb_y-1)*s->mb_stride;
    }else{
5037
        int mb_xy = h->mb_xy;
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5038
        mba_xy = mb_xy - 1;
5039
        mbb_xy = mb_xy - (s->mb_stride << FIELD_PICTURE);
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5040 5041
    }

5042
    if( h->slice_table[mba_xy] == h->slice_num && !IS_SKIP( s->current_picture.mb_type[mba_xy] ))
5043
        ctx++;
5044
    if( h->slice_table[mbb_xy] == h->slice_num && !IS_SKIP( s->current_picture.mb_type[mbb_xy] ))
5045 5046
        ctx++;

5047
    if( h->slice_type_nos == FF_B_TYPE )
5048
        ctx += 13;
5049
    return get_cabac_noinline( &h->cabac, &h->cabac_state[11+ctx] );
5050 5051 5052 5053 5054 5055 5056 5057
}

static int decode_cabac_mb_intra4x4_pred_mode( H264Context *h, int pred_mode ) {
    int mode = 0;

    if( get_cabac( &h->cabac, &h->cabac_state[68] ) )
        return pred_mode;

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    mode += 1 * get_cabac( &h->cabac, &h->cabac_state[69] );
    mode += 2 * get_cabac( &h->cabac, &h->cabac_state[69] );
    mode += 4 * get_cabac( &h->cabac, &h->cabac_state[69] );

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    if( mode >= pred_mode )
        return mode + 1;
    else
        return mode;
}

static int decode_cabac_mb_chroma_pre_mode( H264Context *h) {
5069 5070
    const int mba_xy = h->left_mb_xy[0];
    const int mbb_xy = h->top_mb_xy;
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    int ctx = 0;

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    /* No need to test for IS_INTRA4x4 and IS_INTRA16x16, as we set chroma_pred_mode_table to 0 */
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    if( h->slice_table[mba_xy] == h->slice_num && h->chroma_pred_mode_table[mba_xy] != 0 )
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        ctx++;
5077

5078
    if( h->slice_table[mbb_xy] == h->slice_num && h->chroma_pred_mode_table[mbb_xy] != 0 )
5079 5080
        ctx++;

5081
    if( get_cabac_noinline( &h->cabac, &h->cabac_state[64+ctx] ) == 0 )
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        return 0;

5084
    if( get_cabac_noinline( &h->cabac, &h->cabac_state[64+3] ) == 0 )
5085
        return 1;
5086
    if( get_cabac_noinline( &h->cabac, &h->cabac_state[64+3] ) == 0 )
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        return 2;
    else
        return 3;
}

static int decode_cabac_mb_cbp_luma( H264Context *h) {
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    int cbp_b, cbp_a, ctx, cbp = 0;

    cbp_a = h->slice_table[h->left_mb_xy[0]] == h->slice_num ? h->left_cbp : -1;
    cbp_b = h->slice_table[h->top_mb_xy]     == h->slice_num ? h->top_cbp  : -1;

    ctx = !(cbp_a & 0x02) + 2 * !(cbp_b & 0x04);
    cbp |= get_cabac_noinline(&h->cabac, &h->cabac_state[73 + ctx]);
    ctx = !(cbp   & 0x01) + 2 * !(cbp_b & 0x08);
    cbp |= get_cabac_noinline(&h->cabac, &h->cabac_state[73 + ctx]) << 1;
    ctx = !(cbp_a & 0x08) + 2 * !(cbp   & 0x01);
    cbp |= get_cabac_noinline(&h->cabac, &h->cabac_state[73 + ctx]) << 2;
    ctx = !(cbp   & 0x04) + 2 * !(cbp   & 0x02);
    cbp |= get_cabac_noinline(&h->cabac, &h->cabac_state[73 + ctx]) << 3;
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    return cbp;
}
static int decode_cabac_mb_cbp_chroma( H264Context *h) {
    int ctx;
    int cbp_a, cbp_b;

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    cbp_a = (h->left_cbp>>4)&0x03;
    cbp_b = (h-> top_cbp>>4)&0x03;
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    ctx = 0;
    if( cbp_a > 0 ) ctx++;
    if( cbp_b > 0 ) ctx += 2;
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    if( get_cabac_noinline( &h->cabac, &h->cabac_state[77 + ctx] ) == 0 )
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        return 0;

    ctx = 4;
    if( cbp_a == 2 ) ctx++;
    if( cbp_b == 2 ) ctx += 2;
5124
    return 1 + get_cabac_noinline( &h->cabac, &h->cabac_state[77 + ctx] );
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}
static int decode_cabac_mb_dqp( H264Context *h) {
5127
    int   ctx= h->last_qscale_diff != 0;
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    int   val = 0;

5130
    while( get_cabac_noinline( &h->cabac, &h->cabac_state[60 + ctx] ) ) {
5131
        ctx= 2+(ctx>>1);
5132
        val++;
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        if(val > 102) //prevent infinite loop
5134
            return INT_MIN;
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    }

    if( val&0x01 )
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        return   (val + 1)>>1 ;
5139
    else
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        return -((val + 1)>>1);
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}
5142
static int decode_cabac_p_mb_sub_type( H264Context *h ) {
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    if( get_cabac( &h->cabac, &h->cabac_state[21] ) )
        return 0;   /* 8x8 */
    if( !get_cabac( &h->cabac, &h->cabac_state[22] ) )
        return 1;   /* 8x4 */
    if( get_cabac( &h->cabac, &h->cabac_state[23] ) )
        return 2;   /* 4x8 */
    return 3;       /* 4x4 */
}
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static int decode_cabac_b_mb_sub_type( H264Context *h ) {
    int type;
    if( !get_cabac( &h->cabac, &h->cabac_state[36] ) )
        return 0;   /* B_Direct_8x8 */
    if( !get_cabac( &h->cabac, &h->cabac_state[37] ) )
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        return 1 + get_cabac( &h->cabac, &h->cabac_state[39] ); /* B_L0_8x8, B_L1_8x8 */
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    type = 3;
    if( get_cabac( &h->cabac, &h->cabac_state[38] ) ) {
        if( get_cabac( &h->cabac, &h->cabac_state[39] ) )
            return 11 + get_cabac( &h->cabac, &h->cabac_state[39] ); /* B_L1_4x4, B_Bi_4x4 */
        type += 4;
    }
    type += 2*get_cabac( &h->cabac, &h->cabac_state[39] );
    type +=   get_cabac( &h->cabac, &h->cabac_state[39] );
    return type;
}
5167

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5168
static inline int decode_cabac_mb_transform_size( H264Context *h ) {
5169
    return get_cabac_noinline( &h->cabac, &h->cabac_state[399 + h->neighbor_transform_size] );
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}

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static int decode_cabac_mb_ref( H264Context *h, int list, int n ) {
    int refa = h->ref_cache[list][scan8[n] - 1];
    int refb = h->ref_cache[list][scan8[n] - 8];
    int ref  = 0;
    int ctx  = 0;

5178
    if( h->slice_type_nos == FF_B_TYPE) {
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        if( refa > 0 && !h->direct_cache[scan8[n] - 1] )
            ctx++;
        if( refb > 0 && !h->direct_cache[scan8[n] - 8] )
            ctx += 2;
    } else {
        if( refa > 0 )
            ctx++;
        if( refb > 0 )
            ctx += 2;
    }
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    while( get_cabac( &h->cabac, &h->cabac_state[54+ctx] ) ) {
        ref++;
5192
        ctx = (ctx>>2)+4;
5193
        if(ref >= 32 /*h->ref_list[list]*/){
5194
            return -1;
5195
        }
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    }
    return ref;
}

static int decode_cabac_mb_mvd( H264Context *h, int list, int n, int l ) {
    int amvd = abs( h->mvd_cache[list][scan8[n] - 1][l] ) +
               abs( h->mvd_cache[list][scan8[n] - 8][l] );
    int ctxbase = (l == 0) ? 40 : 47;
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    int mvd;
    int ctx = (amvd>2) + (amvd>32);
5206

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    if(!get_cabac(&h->cabac, &h->cabac_state[ctxbase+ctx]))
        return 0;

    mvd= 1;
    ctx= 3;
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    while( mvd < 9 && get_cabac( &h->cabac, &h->cabac_state[ctxbase+ctx] ) ) {
        mvd++;
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        if( ctx < 6 )
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            ctx++;
    }

    if( mvd >= 9 ) {
        int k = 3;
        while( get_cabac_bypass( &h->cabac ) ) {
            mvd += 1 << k;
            k++;
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            if(k>24){
                av_log(h->s.avctx, AV_LOG_ERROR, "overflow in decode_cabac_mb_mvd\n");
                return INT_MIN;
            }
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        }
        while( k-- ) {
            if( get_cabac_bypass( &h->cabac ) )
                mvd += 1 << k;
        }
    }
5233
    return get_cabac_bypass_sign( &h->cabac, -mvd );
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}

5236
static av_always_inline int get_cabac_cbf_ctx( H264Context *h, int cat, int idx, int is_dc ) {
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    int nza, nzb;
5238 5239
    int ctx = 0;

5240
    if( is_dc ) {
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        if( cat == 0 ) {
            nza = h->left_cbp&0x100;
            nzb = h-> top_cbp&0x100;
        } else {
            nza = (h->left_cbp>>(6+idx))&0x01;
            nzb = (h-> top_cbp>>(6+idx))&0x01;
        }
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5248
    } else {
5249 5250 5251
        assert(cat == 1 || cat == 2 || cat == 4);
        nza = h->non_zero_count_cache[scan8[idx] - 1];
        nzb = h->non_zero_count_cache[scan8[idx] - 8];
5252
    }
5253

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    if( nza > 0 )
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        ctx++;

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    if( nzb > 0 )
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        ctx += 2;

    return ctx + 4 * cat;
}

5263
DECLARE_ASM_CONST(1, uint8_t, last_coeff_flag_offset_8x8[63]) = {
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    0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
    3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4,
    5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8
};

5270
static av_always_inline void decode_cabac_residual_internal( H264Context *h, DCTELEM *block, int cat, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff, int is_dc ) {
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    static const int significant_coeff_flag_offset[2][6] = {
      { 105+0, 105+15, 105+29, 105+44, 105+47, 402 },
      { 277+0, 277+15, 277+29, 277+44, 277+47, 436 }
    };
    static const int last_coeff_flag_offset[2][6] = {
      { 166+0, 166+15, 166+29, 166+44, 166+47, 417 },
      { 338+0, 338+15, 338+29, 338+44, 338+47, 451 }
    };
    static const int coeff_abs_level_m1_offset[6] = {
        227+0, 227+10, 227+20, 227+30, 227+39, 426
    };
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    static const uint8_t significant_coeff_flag_offset_8x8[2][63] = {
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      { 0, 1, 2, 3, 4, 5, 5, 4, 4, 3, 3, 4, 4, 4, 5, 5,
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        4, 4, 4, 4, 3, 3, 6, 7, 7, 7, 8, 9,10, 9, 8, 7,
        7, 6,11,12,13,11, 6, 7, 8, 9,14,10, 9, 8, 6,11,
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       12,13,11, 6, 9,14,10, 9,11,12,13,11,14,10,12 },
      { 0, 1, 1, 2, 2, 3, 3, 4, 5, 6, 7, 7, 7, 8, 4, 5,
        6, 9,10,10, 8,11,12,11, 9, 9,10,10, 8,11,12,11,
        9, 9,10,10, 8,11,12,11, 9, 9,10,10, 8,13,13, 9,
        9,10,10, 8,13,13, 9, 9,10,10,14,14,14,14,14 }
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5291
    };
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    /* node ctx: 0..3: abslevel1 (with abslevelgt1 == 0).
     * 4..7: abslevelgt1 + 3 (and abslevel1 doesn't matter).
     * map node ctx => cabac ctx for level=1 */
    static const uint8_t coeff_abs_level1_ctx[8] = { 1, 2, 3, 4, 0, 0, 0, 0 };
    /* map node ctx => cabac ctx for level>1 */
    static const uint8_t coeff_abs_levelgt1_ctx[8] = { 5, 5, 5, 5, 6, 7, 8, 9 };
    static const uint8_t coeff_abs_level_transition[2][8] = {
    /* update node ctx after decoding a level=1 */
        { 1, 2, 3, 3, 4, 5, 6, 7 },
    /* update node ctx after decoding a level>1 */
        { 4, 4, 4, 4, 5, 6, 7, 7 }
    };
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5304 5305

    int index[64];
5306

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5307
    int av_unused last;
5308
    int coeff_count = 0;
5309
    int node_ctx = 0;
5310

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    uint8_t *significant_coeff_ctx_base;
    uint8_t *last_coeff_ctx_base;
    uint8_t *abs_level_m1_ctx_base;
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5314

5315
#if !ARCH_X86
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#define CABAC_ON_STACK
#endif
#ifdef CABAC_ON_STACK
#define CC &cc
    CABACContext cc;
    cc.range     = h->cabac.range;
    cc.low       = h->cabac.low;
    cc.bytestream= h->cabac.bytestream;
#else
#define CC &h->cabac
#endif


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    /* cat: 0-> DC 16x16  n = 0
     *      1-> AC 16x16  n = luma4x4idx
     *      2-> Luma4x4   n = luma4x4idx
     *      3-> DC Chroma n = iCbCr
5333
     *      4-> AC Chroma n = 16 + 4 * iCbCr + chroma4x4idx
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5334
     *      5-> Luma8x8   n = 4 * luma8x8idx
5335 5336 5337
     */

    /* read coded block flag */
5338 5339
    if( is_dc || cat != 5 ) {
        if( get_cabac( CC, &h->cabac_state[85 + get_cabac_cbf_ctx( h, cat, n, is_dc ) ] ) == 0 ) {
5340 5341
            if( !is_dc )
                h->non_zero_count_cache[scan8[n]] = 0;
5342

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#ifdef CABAC_ON_STACK
            h->cabac.range     = cc.range     ;
            h->cabac.low       = cc.low       ;
            h->cabac.bytestream= cc.bytestream;
#endif
5348
            return;
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5349
        }
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    }

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5352
    significant_coeff_ctx_base = h->cabac_state
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5353
        + significant_coeff_flag_offset[MB_FIELD][cat];
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    last_coeff_ctx_base = h->cabac_state
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        + last_coeff_flag_offset[MB_FIELD][cat];
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    abs_level_m1_ctx_base = h->cabac_state
        + coeff_abs_level_m1_offset[cat];

5359
    if( !is_dc && cat == 5 ) {
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#define DECODE_SIGNIFICANCE( coefs, sig_off, last_off ) \
        for(last= 0; last < coefs; last++) { \
            uint8_t *sig_ctx = significant_coeff_ctx_base + sig_off; \
5363
            if( get_cabac( CC, sig_ctx )) { \
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                uint8_t *last_ctx = last_coeff_ctx_base + last_off; \
                index[coeff_count++] = last; \
5366
                if( get_cabac( CC, last_ctx ) ) { \
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                    last= max_coeff; \
                    break; \
                } \
            } \
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        }\
        if( last == max_coeff -1 ) {\
            index[coeff_count++] = last;\
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5374
        }
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        const uint8_t *sig_off = significant_coeff_flag_offset_8x8[MB_FIELD];
5376
#if ARCH_X86 && HAVE_7REGS && HAVE_EBX_AVAILABLE && !defined(BROKEN_RELOCATIONS)
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        coeff_count= decode_significance_8x8_x86(CC, significant_coeff_ctx_base, index, sig_off);
    } else {
5379
        coeff_count= decode_significance_x86(CC, max_coeff, significant_coeff_ctx_base, index);
5380
#else
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        DECODE_SIGNIFICANCE( 63, sig_off[last], last_coeff_flag_offset_8x8[last] );
    } else {
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5383
        DECODE_SIGNIFICANCE( max_coeff - 1, last, last );
5384
#endif
5385
    }
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5386
    assert(coeff_count > 0);
5387

5388
    if( is_dc ) {
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        if( cat == 0 )
            h->cbp_table[h->mb_xy] |= 0x100;
        else
            h->cbp_table[h->mb_xy] |= 0x40 << n;
5393
    } else {
5394 5395
        if( cat == 5 )
            fill_rectangle(&h->non_zero_count_cache[scan8[n]], 2, 2, 8, coeff_count, 1);
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5396
        else {
5397
            assert( cat == 1 || cat == 2 || cat == 4 );
5398
            h->non_zero_count_cache[scan8[n]] = coeff_count;
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        }
5400
    }
5401

5402
    do {
5403 5404
        uint8_t *ctx = coeff_abs_level1_ctx[node_ctx] + abs_level_m1_ctx_base;

5405
        int j= scantable[index[--coeff_count]];
5406

5407
        if( get_cabac( CC, ctx ) == 0 ) {
5408
            node_ctx = coeff_abs_level_transition[0][node_ctx];
5409
            if( is_dc ) {
5410
                block[j] = get_cabac_bypass_sign( CC, -1);
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            }else{
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                block[j] = (get_cabac_bypass_sign( CC, -qmul[j]) + 32) >> 6;
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            }
5414
        } else {
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            int coeff_abs = 2;
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            ctx = coeff_abs_levelgt1_ctx[node_ctx] + abs_level_m1_ctx_base;
            node_ctx = coeff_abs_level_transition[1][node_ctx];

5419
            while( coeff_abs < 15 && get_cabac( CC, ctx ) ) {
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                coeff_abs++;
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            }

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            if( coeff_abs >= 15 ) {
                int j = 0;
5425
                while( get_cabac_bypass( CC ) ) {
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                    j++;
                }
5428

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                coeff_abs=1;
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                while( j-- ) {
5431
                    coeff_abs += coeff_abs + get_cabac_bypass( CC );
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                }
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                coeff_abs+= 14;
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            }

5436
            if( is_dc ) {
5437
                block[j] = get_cabac_bypass_sign( CC, -coeff_abs );
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            }else{
5439
                block[j] = (get_cabac_bypass_sign( CC, -coeff_abs ) * qmul[j] + 32) >> 6;
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            }
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        }
5442
    } while( coeff_count );
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#ifdef CABAC_ON_STACK
            h->cabac.range     = cc.range     ;
            h->cabac.low       = cc.low       ;
            h->cabac.bytestream= cc.bytestream;
#endif
5448

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}

5451
#if !CONFIG_SMALL
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static void decode_cabac_residual_dc( H264Context *h, DCTELEM *block, int cat, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff ) {
    decode_cabac_residual_internal(h, block, cat, n, scantable, qmul, max_coeff, 1);
}

static void decode_cabac_residual_nondc( H264Context *h, DCTELEM *block, int cat, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff ) {
    decode_cabac_residual_internal(h, block, cat, n, scantable, qmul, max_coeff, 0);
}
#endif

static void decode_cabac_residual( H264Context *h, DCTELEM *block, int cat, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff ) {
5462
#if CONFIG_SMALL
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    decode_cabac_residual_internal(h, block, cat, n, scantable, qmul, max_coeff, cat == 0 || cat == 3);
#else
    if( cat == 0 || cat == 3 ) decode_cabac_residual_dc(h, block, cat, n, scantable, qmul, max_coeff);
    else decode_cabac_residual_nondc(h, block, cat, n, scantable, qmul, max_coeff);
#endif
}

5470
static inline void compute_mb_neighbors(H264Context *h)
5471 5472
{
    MpegEncContext * const s = &h->s;
5473
    const int mb_xy  = h->mb_xy;
5474 5475
    h->top_mb_xy     = mb_xy - s->mb_stride;
    h->left_mb_xy[0] = mb_xy - 1;
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    if(FRAME_MBAFF){
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        const int pair_xy          = s->mb_x     + (s->mb_y & ~1)*s->mb_stride;
        const int top_pair_xy      = pair_xy     - s->mb_stride;
5479 5480 5481
        const int top_mb_field_flag  = IS_INTERLACED(s->current_picture.mb_type[top_pair_xy]);
        const int left_mb_field_flag = IS_INTERLACED(s->current_picture.mb_type[pair_xy-1]);
        const int curr_mb_field_flag = MB_FIELD;
5482
        const int bottom = (s->mb_y & 1);
5483

5484
        if (curr_mb_field_flag && (bottom || top_mb_field_flag)){
5485 5486
            h->top_mb_xy -= s->mb_stride;
        }
5487
        if (!left_mb_field_flag == curr_mb_field_flag) {
5488 5489
            h->left_mb_xy[0] = pair_xy - 1;
        }
5490 5491
    } else if (FIELD_PICTURE) {
        h->top_mb_xy -= s->mb_stride;
5492 5493 5494 5495
    }
    return;
}

5496 5497
/**
 * decodes a macroblock
diego's avatar
diego committed
5498
 * @returns 0 if OK, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed
5499 5500 5501
 */
static int decode_mb_cabac(H264Context *h) {
    MpegEncContext * const s = &h->s;
5502
    int mb_xy;
5503
    int mb_type, partition_count, cbp = 0;
lorenm's avatar
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5504
    int dct8x8_allowed= h->pps.transform_8x8_mode;
5505

5506 5507
    mb_xy = h->mb_xy = s->mb_x + s->mb_y*s->mb_stride;

mbardiaux's avatar
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5508
    tprintf(s->avctx, "pic:%d mb:%d/%d\n", h->frame_num, s->mb_x, s->mb_y);
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5509
    if( h->slice_type_nos != FF_I_TYPE ) {
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5510 5511 5512 5513 5514 5515 5516 5517
        int skip;
        /* a skipped mb needs the aff flag from the following mb */
        if( FRAME_MBAFF && s->mb_x==0 && (s->mb_y&1)==0 )
            predict_field_decoding_flag(h);
        if( FRAME_MBAFF && (s->mb_y&1)==1 && h->prev_mb_skipped )
            skip = h->next_mb_skipped;
        else
            skip = decode_cabac_mb_skip( h, s->mb_x, s->mb_y );
5518
        /* read skip flags */
lorenm's avatar
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5519 5520 5521 5522
        if( skip ) {
            if( FRAME_MBAFF && (s->mb_y&1)==0 ){
                s->current_picture.mb_type[mb_xy] = MB_TYPE_SKIP;
                h->next_mb_skipped = decode_cabac_mb_skip( h, s->mb_x, s->mb_y+1 );
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5523
                if(!h->next_mb_skipped)
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lorenm committed
5524 5525 5526
                    h->mb_mbaff = h->mb_field_decoding_flag = decode_cabac_field_decoding_flag(h);
            }

5527
            decode_mb_skip(h);
5528 5529

            h->cbp_table[mb_xy] = 0;
5530
            h->chroma_pred_mode_table[mb_xy] = 0;
5531 5532 5533 5534 5535 5536
            h->last_qscale_diff = 0;

            return 0;

        }
    }
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5537 5538 5539
    if(FRAME_MBAFF){
        if( (s->mb_y&1) == 0 )
            h->mb_mbaff =
5540
            h->mb_field_decoding_flag = decode_cabac_field_decoding_flag(h);
5541
    }
5542

5543
    h->prev_mb_skipped = 0;
5544

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diego committed
5545
    compute_mb_neighbors(h);
5546

5547
    if( h->slice_type_nos == FF_B_TYPE ) {
5548
        mb_type = decode_cabac_mb_type_b( h );
5549 5550 5551 5552 5553 5554 5555
        if( mb_type < 23 ){
            partition_count= b_mb_type_info[mb_type].partition_count;
            mb_type=         b_mb_type_info[mb_type].type;
        }else{
            mb_type -= 23;
            goto decode_intra_mb;
        }
5556
    } else if( h->slice_type_nos == FF_P_TYPE ) {
5557 5558 5559 5560 5561 5562 5563 5564 5565
        if( get_cabac_noinline( &h->cabac, &h->cabac_state[14] ) == 0 ) {
            /* P-type */
            if( get_cabac_noinline( &h->cabac, &h->cabac_state[15] ) == 0 ) {
                /* P_L0_D16x16, P_8x8 */
                mb_type= 3 * get_cabac_noinline( &h->cabac, &h->cabac_state[16] );
            } else {
                /* P_L0_D8x16, P_L0_D16x8 */
                mb_type= 2 - get_cabac_noinline( &h->cabac, &h->cabac_state[17] );
            }
5566 5567 5568
            partition_count= p_mb_type_info[mb_type].partition_count;
            mb_type=         p_mb_type_info[mb_type].type;
        } else {
5569
            mb_type= decode_cabac_intra_mb_type(h, 17, 0);
5570 5571 5572
            goto decode_intra_mb;
        }
    } else {
5573
        mb_type= decode_cabac_intra_mb_type(h, 3, 1);
5574 5575 5576
        if(h->slice_type == FF_SI_TYPE && mb_type)
            mb_type--;
        assert(h->slice_type_nos == FF_I_TYPE);
5577 5578 5579 5580 5581 5582
decode_intra_mb:
        partition_count = 0;
        cbp= i_mb_type_info[mb_type].cbp;
        h->intra16x16_pred_mode= i_mb_type_info[mb_type].pred_mode;
        mb_type= i_mb_type_info[mb_type].type;
    }
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5583
    if(MB_FIELD)
5584 5585 5586 5587 5588
        mb_type |= MB_TYPE_INTERLACED;

    h->slice_table[ mb_xy ]= h->slice_num;

    if(IS_INTRA_PCM(mb_type)) {
5589
        const uint8_t *ptr;
5590

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5591
        // We assume these blocks are very rare so we do not optimize it.
5592 5593 5594
        // FIXME The two following lines get the bitstream position in the cabac
        // decode, I think it should be done by a function in cabac.h (or cabac.c).
        ptr= h->cabac.bytestream;
5595 5596 5597 5598
        if(h->cabac.low&0x1) ptr--;
        if(CABAC_BITS==16){
            if(h->cabac.low&0x1FF) ptr--;
        }
5599 5600

        // The pixels are stored in the same order as levels in h->mb array.
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5601
        memcpy(h->mb, ptr, 256); ptr+=256;
5602
        if(CHROMA){
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5603
            memcpy(h->mb+128, ptr, 128); ptr+=128;
5604 5605 5606 5607
        }

        ff_init_cabac_decoder(&h->cabac, ptr, h->cabac.bytestream_end - ptr);

5608
        // All blocks are present
5609
        h->cbp_table[mb_xy] = 0x1ef;
5610
        h->chroma_pred_mode_table[mb_xy] = 0;
5611
        // In deblocking, the quantizer is 0
5612
        s->current_picture.qscale_table[mb_xy]= 0;
5613
        // All coeffs are present
5614
        memset(h->non_zero_count[mb_xy], 16, 16);
lorenm's avatar
lorenm committed
5615
        s->current_picture.mb_type[mb_xy]= mb_type;
5616
        h->last_qscale_diff = 0;
5617
        return 0;
5618 5619
    }

lorenm's avatar
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5620 5621 5622 5623 5624
    if(MB_MBAFF){
        h->ref_count[0] <<= 1;
        h->ref_count[1] <<= 1;
    }

michael's avatar
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5625
    fill_caches(h, mb_type, 0);
5626 5627

    if( IS_INTRA( mb_type ) ) {
5628
        int i, pred_mode;
5629
        if( IS_INTRA4x4( mb_type ) ) {
lorenm's avatar
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5630 5631 5632 5633 5634 5635 5636 5637 5638 5639 5640
            if( dct8x8_allowed && decode_cabac_mb_transform_size( h ) ) {
                mb_type |= MB_TYPE_8x8DCT;
                for( i = 0; i < 16; i+=4 ) {
                    int pred = pred_intra_mode( h, i );
                    int mode = decode_cabac_mb_intra4x4_pred_mode( h, pred );
                    fill_rectangle( &h->intra4x4_pred_mode_cache[ scan8[i] ], 2, 2, 8, mode, 1 );
                }
            } else {
                for( i = 0; i < 16; i++ ) {
                    int pred = pred_intra_mode( h, i );
                    h->intra4x4_pred_mode_cache[ scan8[i] ] = decode_cabac_mb_intra4x4_pred_mode( h, pred );
5641 5642

                //av_log( s->avctx, AV_LOG_ERROR, "i4x4 pred=%d mode=%d\n", pred, h->intra4x4_pred_mode_cache[ scan8[i] ] );
lorenm's avatar
lorenm committed
5643
                }
5644 5645 5646 5647 5648 5649 5650
            }
            write_back_intra_pred_mode(h);
            if( check_intra4x4_pred_mode(h) < 0 ) return -1;
        } else {
            h->intra16x16_pred_mode= check_intra_pred_mode( h, h->intra16x16_pred_mode );
            if( h->intra16x16_pred_mode < 0 ) return -1;
        }
5651
        if(CHROMA){
michael's avatar
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5652 5653
            h->chroma_pred_mode_table[mb_xy] =
            pred_mode                        = decode_cabac_mb_chroma_pre_mode( h );
5654

michael's avatar
michael committed
5655 5656 5657
            pred_mode= check_intra_pred_mode( h, pred_mode );
            if( pred_mode < 0 ) return -1;
            h->chroma_pred_mode= pred_mode;
5658
        }
5659
    } else if( partition_count == 4 ) {
5660 5661
        int i, j, sub_partition_count[4], list, ref[2][4];

5662
        if( h->slice_type_nos == FF_B_TYPE ) {
5663 5664 5665 5666 5667
            for( i = 0; i < 4; i++ ) {
                h->sub_mb_type[i] = decode_cabac_b_mb_sub_type( h );
                sub_partition_count[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count;
                h->sub_mb_type[i]=      b_sub_mb_type_info[ h->sub_mb_type[i] ].type;
            }
lorenm's avatar
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5668 5669
            if( IS_DIRECT(h->sub_mb_type[0] | h->sub_mb_type[1] |
                          h->sub_mb_type[2] | h->sub_mb_type[3]) ) {
5670
                pred_direct_motion(h, &mb_type);
5671 5672 5673 5674
                h->ref_cache[0][scan8[4]] =
                h->ref_cache[1][scan8[4]] =
                h->ref_cache[0][scan8[12]] =
                h->ref_cache[1][scan8[12]] = PART_NOT_AVAILABLE;
5675 5676 5677 5678 5679 5680
                if( h->ref_count[0] > 1 || h->ref_count[1] > 1 ) {
                    for( i = 0; i < 4; i++ )
                        if( IS_DIRECT(h->sub_mb_type[i]) )
                            fill_rectangle( &h->direct_cache[scan8[4*i]], 2, 2, 8, 1, 1 );
                }
            }
5681 5682 5683 5684 5685 5686
        } else {
            for( i = 0; i < 4; i++ ) {
                h->sub_mb_type[i] = decode_cabac_p_mb_sub_type( h );
                sub_partition_count[i]= p_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count;
                h->sub_mb_type[i]=      p_sub_mb_type_info[ h->sub_mb_type[i] ].type;
            }
5687 5688
        }

5689
        for( list = 0; list < h->list_count; list++ ) {
5690
                for( i = 0; i < 4; i++ ) {
5691 5692
                    if(IS_DIRECT(h->sub_mb_type[i])) continue;
                    if(IS_DIR(h->sub_mb_type[i], 0, list)){
5693
                        if( h->ref_count[list] > 1 ){
5694
                            ref[list][i] = decode_cabac_mb_ref( h, list, 4*i );
5695 5696 5697 5698 5699
                            if(ref[list][i] >= (unsigned)h->ref_count[list]){
                                av_log(s->avctx, AV_LOG_ERROR, "Reference %d >= %d\n", ref[list][i], h->ref_count[list]);
                                return -1;
                            }
                        }else
5700 5701 5702 5703
                            ref[list][i] = 0;
                    } else {
                        ref[list][i] = -1;
                    }
michael's avatar
1000l  
michael committed
5704
                                                       h->ref_cache[list][ scan8[4*i]+1 ]=
5705 5706 5707 5708
                    h->ref_cache[list][ scan8[4*i]+8 ]=h->ref_cache[list][ scan8[4*i]+9 ]= ref[list][i];
                }
        }

lorenm's avatar
lorenm committed
5709 5710 5711
        if(dct8x8_allowed)
            dct8x8_allowed = get_dct8x8_allowed(h);

5712
        for(list=0; list<h->list_count; list++){
5713
            for(i=0; i<4; i++){
5714
                h->ref_cache[list][ scan8[4*i]   ]=h->ref_cache[list][ scan8[4*i]+1 ];
5715 5716 5717 5718
                if(IS_DIRECT(h->sub_mb_type[i])){
                    fill_rectangle(h->mvd_cache[list][scan8[4*i]], 2, 2, 8, 0, 4);
                    continue;
                }
5719 5720 5721 5722 5723 5724 5725 5726 5727 5728 5729 5730 5731 5732

                if(IS_DIR(h->sub_mb_type[i], 0, list) && !IS_DIRECT(h->sub_mb_type[i])){
                    const int sub_mb_type= h->sub_mb_type[i];
                    const int block_width= (sub_mb_type & (MB_TYPE_16x16|MB_TYPE_16x8)) ? 2 : 1;
                    for(j=0; j<sub_partition_count[i]; j++){
                        int mpx, mpy;
                        int mx, my;
                        const int index= 4*i + block_width*j;
                        int16_t (* mv_cache)[2]= &h->mv_cache[list][ scan8[index] ];
                        int16_t (* mvd_cache)[2]= &h->mvd_cache[list][ scan8[index] ];
                        pred_motion(h, index, block_width, list, h->ref_cache[list][ scan8[index] ], &mpx, &mpy);

                        mx = mpx + decode_cabac_mb_mvd( h, list, index, 0 );
                        my = mpy + decode_cabac_mb_mvd( h, list, index, 1 );
mbardiaux's avatar
mbardiaux committed
5733
                        tprintf(s->avctx, "final mv:%d %d\n", mx, my);
5734 5735

                        if(IS_SUB_8X8(sub_mb_type)){
5736
                            mv_cache[ 1 ][0]=
5737
                            mv_cache[ 8 ][0]= mv_cache[ 9 ][0]= mx;
5738
                            mv_cache[ 1 ][1]=
5739 5740
                            mv_cache[ 8 ][1]= mv_cache[ 9 ][1]= my;

5741
                            mvd_cache[ 1 ][0]=
5742
                            mvd_cache[ 8 ][0]= mvd_cache[ 9 ][0]= mx - mpx;
5743
                            mvd_cache[ 1 ][1]=
5744 5745
                            mvd_cache[ 8 ][1]= mvd_cache[ 9 ][1]= my - mpy;
                        }else if(IS_SUB_8X4(sub_mb_type)){
5746 5747
                            mv_cache[ 1 ][0]= mx;
                            mv_cache[ 1 ][1]= my;
5748

5749 5750
                            mvd_cache[ 1 ][0]= mx - mpx;
                            mvd_cache[ 1 ][1]= my - mpy;
5751
                        }else if(IS_SUB_4X8(sub_mb_type)){
5752 5753
                            mv_cache[ 8 ][0]= mx;
                            mv_cache[ 8 ][1]= my;
5754

5755 5756
                            mvd_cache[ 8 ][0]= mx - mpx;
                            mvd_cache[ 8 ][1]= my - mpy;
5757
                        }
5758 5759 5760 5761 5762
                        mv_cache[ 0 ][0]= mx;
                        mv_cache[ 0 ][1]= my;

                        mvd_cache[ 0 ][0]= mx - mpx;
                        mvd_cache[ 0 ][1]= my - mpy;
5763 5764 5765 5766 5767 5768 5769 5770 5771
                    }
                }else{
                    uint32_t *p= (uint32_t *)&h->mv_cache[list][ scan8[4*i] ][0];
                    uint32_t *pd= (uint32_t *)&h->mvd_cache[list][ scan8[4*i] ][0];
                    p[0] = p[1] = p[8] = p[9] = 0;
                    pd[0]= pd[1]= pd[8]= pd[9]= 0;
                }
            }
        }
5772 5773 5774 5775
    } else if( IS_DIRECT(mb_type) ) {
        pred_direct_motion(h, &mb_type);
        fill_rectangle(h->mvd_cache[0][scan8[0]], 4, 4, 8, 0, 4);
        fill_rectangle(h->mvd_cache[1][scan8[0]], 4, 4, 8, 0, 4);
lorenm's avatar
lorenm committed
5776
        dct8x8_allowed &= h->sps.direct_8x8_inference_flag;
5777
    } else {
5778 5779
        int list, mx, my, i, mpx, mpy;
        if(IS_16X16(mb_type)){
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5780
            for(list=0; list<h->list_count; list++){
5781
                if(IS_DIR(mb_type, 0, list)){
5782 5783 5784 5785 5786 5787 5788 5789 5790
                    int ref;
                    if(h->ref_count[list] > 1){
                        ref= decode_cabac_mb_ref(h, list, 0);
                        if(ref >= (unsigned)h->ref_count[list]){
                            av_log(s->avctx, AV_LOG_ERROR, "Reference %d >= %d\n", ref, h->ref_count[list]);
                            return -1;
                        }
                    }else
                        ref=0;
5791
                        fill_rectangle(&h->ref_cache[list][ scan8[0] ], 4, 4, 8, ref, 1);
lorenm's avatar
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5792
                }else
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5793
                    fill_rectangle(&h->ref_cache[list][ scan8[0] ], 4, 4, 8, (uint8_t)LIST_NOT_USED, 1); //FIXME factorize and the other fill_rect below too
5794
            }
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michael committed
5795
            for(list=0; list<h->list_count; list++){
5796 5797 5798 5799 5800
                if(IS_DIR(mb_type, 0, list)){
                    pred_motion(h, 0, 4, list, h->ref_cache[list][ scan8[0] ], &mpx, &mpy);

                    mx = mpx + decode_cabac_mb_mvd( h, list, 0, 0 );
                    my = mpy + decode_cabac_mb_mvd( h, list, 0, 1 );
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mbardiaux committed
5801
                    tprintf(s->avctx, "final mv:%d %d\n", mx, my);
5802 5803 5804

                    fill_rectangle(h->mvd_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(mx-mpx,my-mpy), 4);
                    fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(mx,my), 4);
lorenm's avatar
lorenm committed
5805 5806
                }else
                    fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, 0, 4);
5807 5808 5809
            }
        }
        else if(IS_16X8(mb_type)){
5810
            for(list=0; list<h->list_count; list++){
5811 5812
                    for(i=0; i<2; i++){
                        if(IS_DIR(mb_type, i, list)){
5813 5814 5815 5816 5817 5818 5819 5820 5821
                            int ref;
                            if(h->ref_count[list] > 1){
                                ref= decode_cabac_mb_ref( h, list, 8*i );
                                if(ref >= (unsigned)h->ref_count[list]){
                                    av_log(s->avctx, AV_LOG_ERROR, "Reference %d >= %d\n", ref, h->ref_count[list]);
                                    return -1;
                                }
                            }else
                                ref=0;
5822
                            fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, ref, 1);
5823 5824
                        }else
                            fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, (LIST_NOT_USED&0xFF), 1);
5825 5826
                    }
            }
5827
            for(list=0; list<h->list_count; list++){
5828 5829 5830 5831 5832
                for(i=0; i<2; i++){
                    if(IS_DIR(mb_type, i, list)){
                        pred_16x8_motion(h, 8*i, list, h->ref_cache[list][scan8[0] + 16*i], &mpx, &mpy);
                        mx = mpx + decode_cabac_mb_mvd( h, list, 8*i, 0 );
                        my = mpy + decode_cabac_mb_mvd( h, list, 8*i, 1 );
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mbardiaux committed
5833
                        tprintf(s->avctx, "final mv:%d %d\n", mx, my);
5834 5835 5836

                        fill_rectangle(h->mvd_cache[list][ scan8[0] + 16*i ], 4, 2, 8, pack16to32(mx-mpx,my-mpy), 4);
                        fill_rectangle(h->mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, pack16to32(mx,my), 4);
lorenm's avatar
lorenm committed
5837
                    }else{
5838 5839
                        fill_rectangle(h->mvd_cache[list][ scan8[0] + 16*i ], 4, 2, 8, 0, 4);
                        fill_rectangle(h-> mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, 0, 4);
5840 5841 5842 5843 5844
                    }
                }
            }
        }else{
            assert(IS_8X16(mb_type));
5845
            for(list=0; list<h->list_count; list++){
5846 5847
                    for(i=0; i<2; i++){
                        if(IS_DIR(mb_type, i, list)){ //FIXME optimize
5848 5849 5850 5851 5852 5853 5854 5855 5856
                            int ref;
                            if(h->ref_count[list] > 1){
                                ref= decode_cabac_mb_ref( h, list, 4*i );
                                if(ref >= (unsigned)h->ref_count[list]){
                                    av_log(s->avctx, AV_LOG_ERROR, "Reference %d >= %d\n", ref, h->ref_count[list]);
                                    return -1;
                                }
                            }else
                                ref=0;
5857
                            fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, ref, 1);
5858 5859
                        }else
                            fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, (LIST_NOT_USED&0xFF), 1);
5860 5861
                    }
            }
5862
            for(list=0; list<h->list_count; list++){
5863 5864 5865 5866 5867 5868
                for(i=0; i<2; i++){
                    if(IS_DIR(mb_type, i, list)){
                        pred_8x16_motion(h, i*4, list, h->ref_cache[list][ scan8[0] + 2*i ], &mpx, &mpy);
                        mx = mpx + decode_cabac_mb_mvd( h, list, 4*i, 0 );
                        my = mpy + decode_cabac_mb_mvd( h, list, 4*i, 1 );

mbardiaux's avatar
mbardiaux committed
5869
                        tprintf(s->avctx, "final mv:%d %d\n", mx, my);
5870 5871
                        fill_rectangle(h->mvd_cache[list][ scan8[0] + 2*i ], 2, 4, 8, pack16to32(mx-mpx,my-mpy), 4);
                        fill_rectangle(h->mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, pack16to32(mx,my), 4);
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lorenm committed
5872
                    }else{
5873 5874
                        fill_rectangle(h->mvd_cache[list][ scan8[0] + 2*i ], 2, 4, 8, 0, 4);
                        fill_rectangle(h-> mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, 0, 4);
5875 5876 5877 5878
                    }
                }
            }
        }
5879 5880
    }

5881 5882
   if( IS_INTER( mb_type ) ) {
        h->chroma_pred_mode_table[mb_xy] = 0;
5883
        write_back_motion( h, mb_type );
5884
   }
5885 5886 5887

    if( !IS_INTRA16x16( mb_type ) ) {
        cbp  = decode_cabac_mb_cbp_luma( h );
5888
        if(CHROMA)
michael's avatar
michael committed
5889
            cbp |= decode_cabac_mb_cbp_chroma( h ) << 4;
5890 5891
    }

lorenm's avatar
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5892
    h->cbp_table[mb_xy] = h->cbp = cbp;
5893

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5894 5895 5896 5897 5898 5899
    if( dct8x8_allowed && (cbp&15) && !IS_INTRA( mb_type ) ) {
        if( decode_cabac_mb_transform_size( h ) )
            mb_type |= MB_TYPE_8x8DCT;
    }
    s->current_picture.mb_type[mb_xy]= mb_type;

5900
    if( cbp || IS_INTRA16x16( mb_type ) ) {
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lorenm committed
5901
        const uint8_t *scan, *scan8x8, *dc_scan;
5902
        const uint32_t *qmul;
5903 5904 5905
        int dqp;

        if(IS_INTERLACED(mb_type)){
lorenm's avatar
lorenm committed
5906
            scan8x8= s->qscale ? h->field_scan8x8 : h->field_scan8x8_q0;
lorenm's avatar
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5907
            scan= s->qscale ? h->field_scan : h->field_scan_q0;
5908 5909
            dc_scan= luma_dc_field_scan;
        }else{
lorenm's avatar
lorenm committed
5910
            scan8x8= s->qscale ? h->zigzag_scan8x8 : h->zigzag_scan8x8_q0;
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5911
            scan= s->qscale ? h->zigzag_scan : h->zigzag_scan_q0;
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            dc_scan= luma_dc_zigzag_scan;
        }

        h->last_qscale_diff = dqp = decode_cabac_mb_dqp( h );
5916 5917 5918 5919
        if( dqp == INT_MIN ){
            av_log(h->s.avctx, AV_LOG_ERROR, "cabac decode of qscale diff failed at %d %d\n", s->mb_x, s->mb_y);
            return -1;
        }
5920 5921 5922 5923 5924
        s->qscale += dqp;
        if(((unsigned)s->qscale) > 51){
            if(s->qscale<0) s->qscale+= 52;
            else            s->qscale-= 52;
        }
5925 5926
        h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
        h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
5927 5928 5929 5930

        if( IS_INTRA16x16( mb_type ) ) {
            int i;
            //av_log( s->avctx, AV_LOG_ERROR, "INTRA16x16 DC\n" );
5931 5932
            decode_cabac_residual( h, h->mb, 0, 0, dc_scan, NULL, 16);

5933
            if( cbp&15 ) {
5934
                qmul = h->dequant4_coeff[0][s->qscale];
5935 5936
                for( i = 0; i < 16; i++ ) {
                    //av_log( s->avctx, AV_LOG_ERROR, "INTRA16x16 AC:%d\n", i );
5937
                    decode_cabac_residual(h, h->mb + 16*i, 1, i, scan + 1, qmul, 15);
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                }
            } else {
                fill_rectangle(&h->non_zero_count_cache[scan8[0]], 4, 4, 8, 0, 1);
            }
        } else {
            int i8x8, i4x4;
            for( i8x8 = 0; i8x8 < 4; i8x8++ ) {
                if( cbp & (1<<i8x8) ) {
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lorenm committed
5946
                    if( IS_8x8DCT(mb_type) ) {
5947 5948
                        decode_cabac_residual(h, h->mb + 64*i8x8, 5, 4*i8x8,
                            scan8x8, h->dequant8_coeff[IS_INTRA( mb_type ) ? 0:1][s->qscale], 64);
5949
                    } else {
andoma's avatar
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5950 5951 5952 5953
                        qmul = h->dequant4_coeff[IS_INTRA( mb_type ) ? 0:3][s->qscale];
                        for( i4x4 = 0; i4x4 < 4; i4x4++ ) {
                            const int index = 4*i8x8 + i4x4;
                            //av_log( s->avctx, AV_LOG_ERROR, "Luma4x4: %d\n", index );
5954
//START_TIMER
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5955
                            decode_cabac_residual(h, h->mb + 16*index, 2, index, scan, qmul, 16);
5956
//STOP_TIMER("decode_residual")
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andoma committed
5957
                        }
5958
                    }
5959 5960 5961 5962 5963 5964 5965 5966 5967 5968 5969
                } else {
                    uint8_t * const nnz= &h->non_zero_count_cache[ scan8[4*i8x8] ];
                    nnz[0] = nnz[1] = nnz[8] = nnz[9] = 0;
                }
            }
        }

        if( cbp&0x30 ){
            int c;
            for( c = 0; c < 2; c++ ) {
                //av_log( s->avctx, AV_LOG_ERROR, "INTRA C%d-DC\n",c );
5970
                decode_cabac_residual(h, h->mb + 256 + 16*4*c, 3, c, chroma_dc_scan, NULL, 4);
5971 5972 5973 5974 5975 5976
            }
        }

        if( cbp&0x20 ) {
            int c, i;
            for( c = 0; c < 2; c++ ) {
5977
                qmul = h->dequant4_coeff[c+1+(IS_INTRA( mb_type ) ? 0:3)][h->chroma_qp[c]];
5978 5979 5980
                for( i = 0; i < 4; i++ ) {
                    const int index = 16 + 4 * c + i;
                    //av_log( s->avctx, AV_LOG_ERROR, "INTRA C%d-AC %d\n",c, index - 16 );
5981
                    decode_cabac_residual(h, h->mb + 16*index, 4, index, scan + 1, qmul, 15);
5982 5983 5984 5985 5986 5987 5988 5989
                }
            }
        } else {
            uint8_t * const nnz= &h->non_zero_count_cache[0];
            nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] =
            nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0;
        }
    } else {
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5990 5991 5992 5993
        uint8_t * const nnz= &h->non_zero_count_cache[0];
        fill_rectangle(&nnz[scan8[0]], 4, 4, 8, 0, 1);
        nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] =
        nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0;
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lorenm committed
5994
        h->last_qscale_diff = 0;
5995 5996 5997 5998 5999
    }

    s->current_picture.qscale_table[mb_xy]= s->qscale;
    write_back_non_zero_count(h);

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6000 6001 6002 6003 6004
    if(MB_MBAFF){
        h->ref_count[0] >>= 1;
        h->ref_count[1] >>= 1;
    }

6005 6006 6007 6008
    return 0;
}


6009
static void filter_mb_edgev( H264Context *h, uint8_t *pix, int stride, int16_t bS[4], int qp ) {
6010 6011 6012
    const int index_a = qp + h->slice_alpha_c0_offset;
    const int alpha = (alpha_table+52)[index_a];
    const int beta  = (beta_table+52)[qp + h->slice_beta_offset];
6013
    if (alpha ==0 || beta == 0) return;
6014

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6015
    if( bS[0] < 4 ) {
6016
        int8_t tc[4];
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6017 6018 6019 6020
        tc[0] = (tc0_table+52)[index_a][bS[0]];
        tc[1] = (tc0_table+52)[index_a][bS[1]];
        tc[2] = (tc0_table+52)[index_a][bS[2]];
        tc[3] = (tc0_table+52)[index_a][bS[3]];
lorenm's avatar
lorenm committed
6021 6022
        h->s.dsp.h264_h_loop_filter_luma(pix, stride, alpha, beta, tc);
    } else {
6023
        h->s.dsp.h264_h_loop_filter_luma_intra(pix, stride, alpha, beta);
6024 6025
    }
}
6026
static void filter_mb_edgecv( H264Context *h, uint8_t *pix, int stride, int16_t bS[4], int qp ) {
6027 6028 6029
    const int index_a = qp + h->slice_alpha_c0_offset;
    const int alpha = (alpha_table+52)[index_a];
    const int beta  = (beta_table+52)[qp + h->slice_beta_offset];
6030
    if (alpha ==0 || beta == 0) return;
6031

lorenm's avatar
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6032
    if( bS[0] < 4 ) {
6033
        int8_t tc[4];
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6034 6035 6036 6037
        tc[0] = (tc0_table+52)[index_a][bS[0]]+1;
        tc[1] = (tc0_table+52)[index_a][bS[1]]+1;
        tc[2] = (tc0_table+52)[index_a][bS[2]]+1;
        tc[3] = (tc0_table+52)[index_a][bS[3]]+1;
lorenm's avatar
lorenm committed
6038 6039
        h->s.dsp.h264_h_loop_filter_chroma(pix, stride, alpha, beta, tc);
    } else {
6040
        h->s.dsp.h264_h_loop_filter_chroma_intra(pix, stride, alpha, beta);
6041 6042 6043
    }
}

6044
static void filter_mb_mbaff_edgev( H264Context *h, uint8_t *pix, int stride, int16_t bS[8], int qp[2] ) {
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    int i;
    for( i = 0; i < 16; i++, pix += stride) {
        int index_a;
        int alpha;
        int beta;
6050

6051 6052
        int qp_index;
        int bS_index = (i >> 1);
lorenm's avatar
lorenm committed
6053
        if (!MB_FIELD) {
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            bS_index &= ~1;
            bS_index |= (i & 1);
        }

        if( bS[bS_index] == 0 ) {
            continue;
        }

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lorenm committed
6062
        qp_index = MB_FIELD ? (i >> 3) : (i & 1);
6063 6064 6065
        index_a = qp[qp_index] + h->slice_alpha_c0_offset;
        alpha = (alpha_table+52)[index_a];
        beta  = (beta_table+52)[qp[qp_index] + h->slice_beta_offset];
6066 6067

        if( bS[bS_index] < 4 ) {
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darkshikari committed
6068
            const int tc0 = (tc0_table+52)[index_a][bS[bS_index]];
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            const int p0 = pix[-1];
            const int p1 = pix[-2];
            const int p2 = pix[-3];
            const int q0 = pix[0];
            const int q1 = pix[1];
            const int q2 = pix[2];

diego's avatar
diego committed
6076 6077 6078
            if( FFABS( p0 - q0 ) < alpha &&
                FFABS( p1 - p0 ) < beta &&
                FFABS( q1 - q0 ) < beta ) {
6079 6080 6081
                int tc = tc0;
                int i_delta;

diego's avatar
diego committed
6082
                if( FFABS( p2 - p0 ) < beta ) {
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6083
                    pix[-2] = p1 + av_clip( ( p2 + ( ( p0 + q0 + 1 ) >> 1 ) - ( p1 << 1 ) ) >> 1, -tc0, tc0 );
6084 6085
                    tc++;
                }
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6086
                if( FFABS( q2 - q0 ) < beta ) {
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6087
                    pix[1] = q1 + av_clip( ( q2 + ( ( p0 + q0 + 1 ) >> 1 ) - ( q1 << 1 ) ) >> 1, -tc0, tc0 );
6088 6089 6090
                    tc++;
                }

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6091 6092 6093
                i_delta = av_clip( (((q0 - p0 ) << 2) + (p1 - q1) + 4) >> 3, -tc, tc );
                pix[-1] = av_clip_uint8( p0 + i_delta );    /* p0' */
                pix[0]  = av_clip_uint8( q0 - i_delta );    /* q0' */
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mbardiaux committed
6094
                tprintf(h->s.avctx, "filter_mb_mbaff_edgev i:%d, qp:%d, indexA:%d, alpha:%d, beta:%d, tc:%d\n# bS:%d -> [%02x, %02x, %02x, %02x, %02x, %02x] =>[%02x, %02x, %02x, %02x]\n", i, qp[qp_index], index_a, alpha, beta, tc, bS[bS_index], pix[-3], p1, p0, q0, q1, pix[2], p1, pix[-1], pix[0], q1);
6095 6096 6097 6098 6099 6100 6101 6102 6103 6104
            }
        }else{
            const int p0 = pix[-1];
            const int p1 = pix[-2];
            const int p2 = pix[-3];

            const int q0 = pix[0];
            const int q1 = pix[1];
            const int q2 = pix[2];

diego's avatar
diego committed
6105 6106 6107
            if( FFABS( p0 - q0 ) < alpha &&
                FFABS( p1 - p0 ) < beta &&
                FFABS( q1 - q0 ) < beta ) {
6108

diego's avatar
diego committed
6109 6110
                if(FFABS( p0 - q0 ) < (( alpha >> 2 ) + 2 )){
                    if( FFABS( p2 - p0 ) < beta)
6111 6112 6113 6114 6115 6116 6117 6118 6119 6120
                    {
                        const int p3 = pix[-4];
                        /* p0', p1', p2' */
                        pix[-1] = ( p2 + 2*p1 + 2*p0 + 2*q0 + q1 + 4 ) >> 3;
                        pix[-2] = ( p2 + p1 + p0 + q0 + 2 ) >> 2;
                        pix[-3] = ( 2*p3 + 3*p2 + p1 + p0 + q0 + 4 ) >> 3;
                    } else {
                        /* p0' */
                        pix[-1] = ( 2*p1 + p0 + q1 + 2 ) >> 2;
                    }
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diego committed
6121
                    if( FFABS( q2 - q0 ) < beta)
6122 6123 6124 6125 6126 6127 6128 6129 6130 6131 6132 6133 6134 6135 6136
                    {
                        const int q3 = pix[3];
                        /* q0', q1', q2' */
                        pix[0] = ( p1 + 2*p0 + 2*q0 + 2*q1 + q2 + 4 ) >> 3;
                        pix[1] = ( p0 + q0 + q1 + q2 + 2 ) >> 2;
                        pix[2] = ( 2*q3 + 3*q2 + q1 + q0 + p0 + 4 ) >> 3;
                    } else {
                        /* q0' */
                        pix[0] = ( 2*q1 + q0 + p1 + 2 ) >> 2;
                    }
                }else{
                    /* p0', q0' */
                    pix[-1] = ( 2*p1 + p0 + q1 + 2 ) >> 2;
                    pix[ 0] = ( 2*q1 + q0 + p1 + 2 ) >> 2;
                }
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mbardiaux committed
6137
                tprintf(h->s.avctx, "filter_mb_mbaff_edgev i:%d, qp:%d, indexA:%d, alpha:%d, beta:%d\n# bS:4 -> [%02x, %02x, %02x, %02x, %02x, %02x] =>[%02x, %02x, %02x, %02x, %02x, %02x]\n", i, qp[qp_index], index_a, alpha, beta, p2, p1, p0, q0, q1, q2, pix[-3], pix[-2], pix[-1], pix[0], pix[1], pix[2]);
6138 6139 6140 6141
            }
        }
    }
}
6142
static void filter_mb_mbaff_edgecv( H264Context *h, uint8_t *pix, int stride, int16_t bS[8], int qp[2] ) {
6143 6144 6145 6146 6147 6148 6149 6150 6151 6152 6153 6154 6155
    int i;
    for( i = 0; i < 8; i++, pix += stride) {
        int index_a;
        int alpha;
        int beta;

        int qp_index;
        int bS_index = i;

        if( bS[bS_index] == 0 ) {
            continue;
        }

lorenm's avatar
lorenm committed
6156
        qp_index = MB_FIELD ? (i >> 2) : (i & 1);
6157 6158 6159
        index_a = qp[qp_index] + h->slice_alpha_c0_offset;
        alpha = (alpha_table+52)[index_a];
        beta  = (beta_table+52)[qp[qp_index] + h->slice_beta_offset];
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lorenm committed
6160

6161
        if( bS[bS_index] < 4 ) {
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6162
            const int tc = (tc0_table+52)[index_a][bS[bS_index]] + 1;
6163 6164 6165 6166 6167
            const int p0 = pix[-1];
            const int p1 = pix[-2];
            const int q0 = pix[0];
            const int q1 = pix[1];

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diego committed
6168 6169 6170
            if( FFABS( p0 - q0 ) < alpha &&
                FFABS( p1 - p0 ) < beta &&
                FFABS( q1 - q0 ) < beta ) {
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reimar committed
6171
                const int i_delta = av_clip( (((q0 - p0 ) << 2) + (p1 - q1) + 4) >> 3, -tc, tc );
6172

reimar's avatar
reimar committed
6173 6174
                pix[-1] = av_clip_uint8( p0 + i_delta );    /* p0' */
                pix[0]  = av_clip_uint8( q0 - i_delta );    /* q0' */
mbardiaux's avatar
mbardiaux committed
6175
                tprintf(h->s.avctx, "filter_mb_mbaff_edgecv i:%d, qp:%d, indexA:%d, alpha:%d, beta:%d, tc:%d\n# bS:%d -> [%02x, %02x, %02x, %02x, %02x, %02x] =>[%02x, %02x, %02x, %02x]\n", i, qp[qp_index], index_a, alpha, beta, tc, bS[bS_index], pix[-3], p1, p0, q0, q1, pix[2], p1, pix[-1], pix[0], q1);
6176 6177 6178 6179 6180 6181 6182
            }
        }else{
            const int p0 = pix[-1];
            const int p1 = pix[-2];
            const int q0 = pix[0];
            const int q1 = pix[1];

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diego committed
6183 6184 6185
            if( FFABS( p0 - q0 ) < alpha &&
                FFABS( p1 - p0 ) < beta &&
                FFABS( q1 - q0 ) < beta ) {
6186 6187 6188

                pix[-1] = ( 2*p1 + p0 + q1 + 2 ) >> 2;   /* p0' */
                pix[0]  = ( 2*q1 + q0 + p1 + 2 ) >> 2;   /* q0' */
mbardiaux's avatar
mbardiaux committed
6189
                tprintf(h->s.avctx, "filter_mb_mbaff_edgecv i:%d\n# bS:4 -> [%02x, %02x, %02x, %02x, %02x, %02x] =>[%02x, %02x, %02x, %02x, %02x, %02x]\n", i, pix[-3], p1, p0, q0, q1, pix[2], pix[-3], pix[-2], pix[-1], pix[0], pix[1], pix[2]);
6190 6191 6192 6193 6194
            }
        }
    }
}

6195
static void filter_mb_edgeh( H264Context *h, uint8_t *pix, int stride, int16_t bS[4], int qp ) {
6196 6197 6198
    const int index_a = qp + h->slice_alpha_c0_offset;
    const int alpha = (alpha_table+52)[index_a];
    const int beta  = (beta_table+52)[qp + h->slice_beta_offset];
6199
    if (alpha ==0 || beta == 0) return;
6200

lorenm's avatar
lorenm committed
6201
    if( bS[0] < 4 ) {
6202
        int8_t tc[4];
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darkshikari committed
6203 6204 6205 6206
        tc[0] = (tc0_table+52)[index_a][bS[0]];
        tc[1] = (tc0_table+52)[index_a][bS[1]];
        tc[2] = (tc0_table+52)[index_a][bS[2]];
        tc[3] = (tc0_table+52)[index_a][bS[3]];
lorenm's avatar
lorenm committed
6207 6208
        h->s.dsp.h264_v_loop_filter_luma(pix, stride, alpha, beta, tc);
    } else {
6209
        h->s.dsp.h264_v_loop_filter_luma_intra(pix, stride, alpha, beta);
6210 6211 6212
    }
}

6213
static void filter_mb_edgech( H264Context *h, uint8_t *pix, int stride, int16_t bS[4], int qp ) {
6214 6215 6216
    const int index_a = qp + h->slice_alpha_c0_offset;
    const int alpha = (alpha_table+52)[index_a];
    const int beta  = (beta_table+52)[qp + h->slice_beta_offset];
6217
    if (alpha ==0 || beta == 0) return;
6218

lorenm's avatar
lorenm committed
6219
    if( bS[0] < 4 ) {
6220
        int8_t tc[4];
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darkshikari committed
6221 6222 6223 6224
        tc[0] = (tc0_table+52)[index_a][bS[0]]+1;
        tc[1] = (tc0_table+52)[index_a][bS[1]]+1;
        tc[2] = (tc0_table+52)[index_a][bS[2]]+1;
        tc[3] = (tc0_table+52)[index_a][bS[3]]+1;
lorenm's avatar
lorenm committed
6225 6226
        h->s.dsp.h264_v_loop_filter_chroma(pix, stride, alpha, beta, tc);
    } else {
6227
        h->s.dsp.h264_v_loop_filter_chroma_intra(pix, stride, alpha, beta);
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    }
}

6231 6232
static void filter_mb_fast( H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize) {
    MpegEncContext * const s = &h->s;
6233
    int mb_y_firstrow = s->picture_structure == PICT_BOTTOM_FIELD;
6234 6235 6236
    int mb_xy, mb_type;
    int qp, qp0, qp1, qpc, qpc0, qpc1, qp_thresh;

6237
    mb_xy = h->mb_xy;
6238

6239
    if(mb_x==0 || mb_y==mb_y_firstrow || !s->dsp.h264_loop_filter_strength || h->pps.chroma_qp_diff ||
6240
        !(s->flags2 & CODEC_FLAG2_FAST) || //FIXME filter_mb_fast is broken, thus hasto be, but should not under CODEC_FLAG2_FAST
6241 6242
       (h->deblocking_filter == 2 && (h->slice_table[mb_xy] != h->slice_table[h->top_mb_xy] ||
                                      h->slice_table[mb_xy] != h->slice_table[mb_xy - 1]))) {
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        filter_mb(h, mb_x, mb_y, img_y, img_cb, img_cr, linesize, uvlinesize);
        return;
    }
    assert(!FRAME_MBAFF);

    mb_type = s->current_picture.mb_type[mb_xy];
    qp = s->current_picture.qscale_table[mb_xy];
    qp0 = s->current_picture.qscale_table[mb_xy-1];
    qp1 = s->current_picture.qscale_table[h->top_mb_xy];
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    qpc = get_chroma_qp( h, 0, qp );
    qpc0 = get_chroma_qp( h, 0, qp0 );
    qpc1 = get_chroma_qp( h, 0, qp1 );
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    qp0 = (qp + qp0 + 1) >> 1;
    qp1 = (qp + qp1 + 1) >> 1;
    qpc0 = (qpc + qpc0 + 1) >> 1;
    qpc1 = (qpc + qpc1 + 1) >> 1;
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    qp_thresh = 15 - h->slice_alpha_c0_offset;
    if(qp <= qp_thresh && qp0 <= qp_thresh && qp1 <= qp_thresh &&
       qpc <= qp_thresh && qpc0 <= qp_thresh && qpc1 <= qp_thresh)
        return;
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    if( IS_INTRA(mb_type) ) {
        int16_t bS4[4] = {4,4,4,4};
        int16_t bS3[4] = {3,3,3,3};
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        int16_t *bSH = FIELD_PICTURE ? bS3 : bS4;
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        if( IS_8x8DCT(mb_type) ) {
            filter_mb_edgev( h, &img_y[4*0], linesize, bS4, qp0 );
            filter_mb_edgev( h, &img_y[4*2], linesize, bS3, qp );
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            filter_mb_edgeh( h, &img_y[4*0*linesize], linesize, bSH, qp1 );
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            filter_mb_edgeh( h, &img_y[4*2*linesize], linesize, bS3, qp );
        } else {
            filter_mb_edgev( h, &img_y[4*0], linesize, bS4, qp0 );
            filter_mb_edgev( h, &img_y[4*1], linesize, bS3, qp );
            filter_mb_edgev( h, &img_y[4*2], linesize, bS3, qp );
            filter_mb_edgev( h, &img_y[4*3], linesize, bS3, qp );
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            filter_mb_edgeh( h, &img_y[4*0*linesize], linesize, bSH, qp1 );
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            filter_mb_edgeh( h, &img_y[4*1*linesize], linesize, bS3, qp );
            filter_mb_edgeh( h, &img_y[4*2*linesize], linesize, bS3, qp );
            filter_mb_edgeh( h, &img_y[4*3*linesize], linesize, bS3, qp );
        }
        filter_mb_edgecv( h, &img_cb[2*0], uvlinesize, bS4, qpc0 );
        filter_mb_edgecv( h, &img_cb[2*2], uvlinesize, bS3, qpc );
        filter_mb_edgecv( h, &img_cr[2*0], uvlinesize, bS4, qpc0 );
        filter_mb_edgecv( h, &img_cr[2*2], uvlinesize, bS3, qpc );
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        filter_mb_edgech( h, &img_cb[2*0*uvlinesize], uvlinesize, bSH, qpc1 );
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        filter_mb_edgech( h, &img_cb[2*2*uvlinesize], uvlinesize, bS3, qpc );
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        filter_mb_edgech( h, &img_cr[2*0*uvlinesize], uvlinesize, bSH, qpc1 );
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        filter_mb_edgech( h, &img_cr[2*2*uvlinesize], uvlinesize, bS3, qpc );
        return;
    } else {
        DECLARE_ALIGNED_8(int16_t, bS[2][4][4]);
        uint64_t (*bSv)[4] = (uint64_t(*)[4])bS;
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        int edges;
        if( IS_8x8DCT(mb_type) && (h->cbp&7) == 7 ) {
            edges = 4;
            bSv[0][0] = bSv[0][2] = bSv[1][0] = bSv[1][2] = 0x0002000200020002ULL;
        } else {
            int mask_edge1 = (mb_type & (MB_TYPE_16x16 | MB_TYPE_8x16)) ? 3 :
                             (mb_type & MB_TYPE_16x8) ? 1 : 0;
            int mask_edge0 = (mb_type & (MB_TYPE_16x16 | MB_TYPE_8x16))
                             && (s->current_picture.mb_type[mb_xy-1] & (MB_TYPE_16x16 | MB_TYPE_8x16))
                             ? 3 : 0;
            int step = IS_8x8DCT(mb_type) ? 2 : 1;
            edges = (mb_type & MB_TYPE_16x16) && !(h->cbp & 15) ? 1 : 4;
            s->dsp.h264_loop_filter_strength( bS, h->non_zero_count_cache, h->ref_cache, h->mv_cache,
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                                              (h->slice_type_nos == FF_B_TYPE), edges, step, mask_edge0, mask_edge1, FIELD_PICTURE);
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        }
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        if( IS_INTRA(s->current_picture.mb_type[mb_xy-1]) )
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            bSv[0][0] = 0x0004000400040004ULL;
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        if( IS_INTRA(s->current_picture.mb_type[h->top_mb_xy]) )
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            bSv[1][0] = FIELD_PICTURE ? 0x0003000300030003ULL : 0x0004000400040004ULL;
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#define FILTER(hv,dir,edge)\
        if(bSv[dir][edge]) {\
            filter_mb_edge##hv( h, &img_y[4*edge*(dir?linesize:1)], linesize, bS[dir][edge], edge ? qp : qp##dir );\
            if(!(edge&1)) {\
                filter_mb_edgec##hv( h, &img_cb[2*edge*(dir?uvlinesize:1)], uvlinesize, bS[dir][edge], edge ? qpc : qpc##dir );\
                filter_mb_edgec##hv( h, &img_cr[2*edge*(dir?uvlinesize:1)], uvlinesize, bS[dir][edge], edge ? qpc : qpc##dir );\
            }\
        }
        if( edges == 1 ) {
            FILTER(v,0,0);
            FILTER(h,1,0);
        } else if( IS_8x8DCT(mb_type) ) {
            FILTER(v,0,0);
            FILTER(v,0,2);
            FILTER(h,1,0);
            FILTER(h,1,2);
        } else {
            FILTER(v,0,0);
            FILTER(v,0,1);
            FILTER(v,0,2);
            FILTER(v,0,3);
            FILTER(h,1,0);
            FILTER(h,1,1);
            FILTER(h,1,2);
            FILTER(h,1,3);
        }
#undef FILTER
    }
}

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static av_always_inline void filter_mb_dir(H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize, int mb_xy, int mb_type, int mvy_limit, int first_vertical_edge_done, int dir) {
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    MpegEncContext * const s = &h->s;
    int edge;
    const int mbm_xy = dir == 0 ? mb_xy -1 : h->top_mb_xy;
    const int mbm_type = s->current_picture.mb_type[mbm_xy];
    int (*ref2frm) [64] = h->ref2frm[ h->slice_num          &(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
    int (*ref2frmm)[64] = h->ref2frm[ h->slice_table[mbm_xy]&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
    int start = h->slice_table[mbm_xy] == 0xFFFF ? 1 : 0;

    const int edges = (mb_type & (MB_TYPE_16x16|MB_TYPE_SKIP))
                              == (MB_TYPE_16x16|MB_TYPE_SKIP) ? 1 : 4;
    // how often to recheck mv-based bS when iterating between edges
    const int mask_edge = (mb_type & (MB_TYPE_16x16 | (MB_TYPE_16x8 << dir))) ? 3 :
                          (mb_type & (MB_TYPE_8x16 >> dir)) ? 1 : 0;
    // how often to recheck mv-based bS when iterating along each edge
    const int mask_par0 = mb_type & (MB_TYPE_16x16 | (MB_TYPE_8x16 >> dir));

    if (first_vertical_edge_done) {
        start = 1;
    }

    if (h->deblocking_filter==2 && h->slice_table[mbm_xy] != h->slice_table[mb_xy])
        start = 1;

    if (FRAME_MBAFF && (dir == 1) && ((mb_y&1) == 0) && start == 0
        && !IS_INTERLACED(mb_type)
        && IS_INTERLACED(mbm_type)
        ) {
        // This is a special case in the norm where the filtering must
        // be done twice (one each of the field) even if we are in a
        // frame macroblock.
        //
        static const int nnz_idx[4] = {4,5,6,3};
        unsigned int tmp_linesize   = 2 *   linesize;
        unsigned int tmp_uvlinesize = 2 * uvlinesize;
        int mbn_xy = mb_xy - 2 * s->mb_stride;
        int qp;
        int i, j;
        int16_t bS[4];

        for(j=0; j<2; j++, mbn_xy += s->mb_stride){
            if( IS_INTRA(mb_type) ||
                IS_INTRA(s->current_picture.mb_type[mbn_xy]) ) {
                bS[0] = bS[1] = bS[2] = bS[3] = 3;
            } else {
                const uint8_t *mbn_nnz = h->non_zero_count[mbn_xy];
                for( i = 0; i < 4; i++ ) {
                    if( h->non_zero_count_cache[scan8[0]+i] != 0 ||
                        mbn_nnz[nnz_idx[i]] != 0 )
                        bS[i] = 2;
                    else
                        bS[i] = 1;
                }
            }
            // Do not use s->qscale as luma quantizer because it has not the same
            // value in IPCM macroblocks.
            qp = ( s->current_picture.qscale_table[mb_xy] + s->current_picture.qscale_table[mbn_xy] + 1 ) >> 1;
            tprintf(s->avctx, "filter mb:%d/%d dir:%d edge:%d, QPy:%d ls:%d uvls:%d", mb_x, mb_y, dir, edge, qp, tmp_linesize, tmp_uvlinesize);
            { int i; for (i = 0; i < 4; i++) tprintf(s->avctx, " bS[%d]:%d", i, bS[i]); tprintf(s->avctx, "\n"); }
            filter_mb_edgeh( h, &img_y[j*linesize], tmp_linesize, bS, qp );
            filter_mb_edgech( h, &img_cb[j*uvlinesize], tmp_uvlinesize, bS,
                              ( h->chroma_qp[0] + get_chroma_qp( h, 0, s->current_picture.qscale_table[mbn_xy] ) + 1 ) >> 1);
            filter_mb_edgech( h, &img_cr[j*uvlinesize], tmp_uvlinesize, bS,
                              ( h->chroma_qp[1] + get_chroma_qp( h, 1, s->current_picture.qscale_table[mbn_xy] ) + 1 ) >> 1);
        }

        start = 1;
    }

    /* Calculate bS */
    for( edge = start; edge < edges; edge++ ) {
        /* mbn_xy: neighbor macroblock */
        const int mbn_xy = edge > 0 ? mb_xy : mbm_xy;
        const int mbn_type = s->current_picture.mb_type[mbn_xy];
        int (*ref2frmn)[64] = edge > 0 ? ref2frm : ref2frmm;
        int16_t bS[4];
        int qp;

        if( (edge&1) && IS_8x8DCT(mb_type) )
            continue;

        if( IS_INTRA(mb_type) ||
            IS_INTRA(mbn_type) ) {
            int value;
            if (edge == 0) {
                if (   (!IS_INTERLACED(mb_type) && !IS_INTERLACED(mbm_type))
                    || ((FRAME_MBAFF || (s->picture_structure != PICT_FRAME)) && (dir == 0))
                ) {
                    value = 4;
                } else {
                    value = 3;
                }
            } else {
                value = 3;
            }
            bS[0] = bS[1] = bS[2] = bS[3] = value;
        } else {
            int i, l;
            int mv_done;

            if( edge & mask_edge ) {
                bS[0] = bS[1] = bS[2] = bS[3] = 0;
                mv_done = 1;
            }
            else if( FRAME_MBAFF && IS_INTERLACED(mb_type ^ mbn_type)) {
                bS[0] = bS[1] = bS[2] = bS[3] = 1;
                mv_done = 1;
            }
            else if( mask_par0 && (edge || (mbn_type & (MB_TYPE_16x16 | (MB_TYPE_8x16 >> dir)))) ) {
                int b_idx= 8 + 4 + edge * (dir ? 8:1);
                int bn_idx= b_idx - (dir ? 8:1);
                int v = 0;

                for( l = 0; !v && l < 1 + (h->slice_type_nos == FF_B_TYPE); l++ ) {
                    v |= ref2frm[l][h->ref_cache[l][b_idx]] != ref2frmn[l][h->ref_cache[l][bn_idx]] ||
                         FFABS( h->mv_cache[l][b_idx][0] - h->mv_cache[l][bn_idx][0] ) >= 4 ||
                         FFABS( h->mv_cache[l][b_idx][1] - h->mv_cache[l][bn_idx][1] ) >= mvy_limit;
                }

                if(h->slice_type_nos == FF_B_TYPE && v){
                    v=0;
                    for( l = 0; !v && l < 2; l++ ) {
                        int ln= 1-l;
                        v |= ref2frm[l][h->ref_cache[l][b_idx]] != ref2frmn[ln][h->ref_cache[ln][bn_idx]] ||
                            FFABS( h->mv_cache[l][b_idx][0] - h->mv_cache[ln][bn_idx][0] ) >= 4 ||
                            FFABS( h->mv_cache[l][b_idx][1] - h->mv_cache[ln][bn_idx][1] ) >= mvy_limit;
                    }
                }

                bS[0] = bS[1] = bS[2] = bS[3] = v;
                mv_done = 1;
            }
            else
                mv_done = 0;

            for( i = 0; i < 4; i++ ) {
                int x = dir == 0 ? edge : i;
                int y = dir == 0 ? i    : edge;
                int b_idx= 8 + 4 + x + 8*y;
                int bn_idx= b_idx - (dir ? 8:1);

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                if( h->non_zero_count_cache[b_idx] |
                    h->non_zero_count_cache[bn_idx] ) {
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                    bS[i] = 2;
                }
                else if(!mv_done)
                {
                    bS[i] = 0;
                    for( l = 0; l < 1 + (h->slice_type_nos == FF_B_TYPE); l++ ) {
                        if( ref2frm[l][h->ref_cache[l][b_idx]] != ref2frmn[l][h->ref_cache[l][bn_idx]] ||
                            FFABS( h->mv_cache[l][b_idx][0] - h->mv_cache[l][bn_idx][0] ) >= 4 ||
                            FFABS( h->mv_cache[l][b_idx][1] - h->mv_cache[l][bn_idx][1] ) >= mvy_limit ) {
                            bS[i] = 1;
                            break;
                        }
                    }

                    if(h->slice_type_nos == FF_B_TYPE && bS[i]){
                        bS[i] = 0;
                        for( l = 0; l < 2; l++ ) {
                            int ln= 1-l;
                            if( ref2frm[l][h->ref_cache[l][b_idx]] != ref2frmn[ln][h->ref_cache[ln][bn_idx]] ||
                                FFABS( h->mv_cache[l][b_idx][0] - h->mv_cache[ln][bn_idx][0] ) >= 4 ||
                                FFABS( h->mv_cache[l][b_idx][1] - h->mv_cache[ln][bn_idx][1] ) >= mvy_limit ) {
                                bS[i] = 1;
                                break;
                            }
                        }
                    }
                }
            }

            if(bS[0]+bS[1]+bS[2]+bS[3] == 0)
                continue;
        }

        /* Filter edge */
        // Do not use s->qscale as luma quantizer because it has not the same
        // value in IPCM macroblocks.
        qp = ( s->current_picture.qscale_table[mb_xy] + s->current_picture.qscale_table[mbn_xy] + 1 ) >> 1;
        //tprintf(s->avctx, "filter mb:%d/%d dir:%d edge:%d, QPy:%d, QPc:%d, QPcn:%d\n", mb_x, mb_y, dir, edge, qp, h->chroma_qp, s->current_picture.qscale_table[mbn_xy]);
        tprintf(s->avctx, "filter mb:%d/%d dir:%d edge:%d, QPy:%d ls:%d uvls:%d", mb_x, mb_y, dir, edge, qp, linesize, uvlinesize);
        { int i; for (i = 0; i < 4; i++) tprintf(s->avctx, " bS[%d]:%d", i, bS[i]); tprintf(s->avctx, "\n"); }
        if( dir == 0 ) {
            filter_mb_edgev( h, &img_y[4*edge], linesize, bS, qp );
            if( (edge&1) == 0 ) {
                filter_mb_edgecv( h, &img_cb[2*edge], uvlinesize, bS,
                                  ( h->chroma_qp[0] + get_chroma_qp( h, 0, s->current_picture.qscale_table[mbn_xy] ) + 1 ) >> 1);
                filter_mb_edgecv( h, &img_cr[2*edge], uvlinesize, bS,
                                  ( h->chroma_qp[1] + get_chroma_qp( h, 1, s->current_picture.qscale_table[mbn_xy] ) + 1 ) >> 1);
            }
        } else {
            filter_mb_edgeh( h, &img_y[4*edge*linesize], linesize, bS, qp );
            if( (edge&1) == 0 ) {
                filter_mb_edgech( h, &img_cb[2*edge*uvlinesize], uvlinesize, bS,
                                  ( h->chroma_qp[0] + get_chroma_qp( h, 0, s->current_picture.qscale_table[mbn_xy] ) + 1 ) >> 1);
                filter_mb_edgech( h, &img_cr[2*edge*uvlinesize], uvlinesize, bS,
                                  ( h->chroma_qp[1] + get_chroma_qp( h, 1, s->current_picture.qscale_table[mbn_xy] ) + 1 ) >> 1);
            }
        }
    }
}

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static void filter_mb( H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize) {
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    MpegEncContext * const s = &h->s;
    const int mb_xy= mb_x + mb_y*s->mb_stride;
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    const int mb_type = s->current_picture.mb_type[mb_xy];
    const int mvy_limit = IS_INTERLACED(mb_type) ? 2 : 4;
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    int first_vertical_edge_done = 0;
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    av_unused int dir;
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    //for sufficiently low qp, filtering wouldn't do anything
    //this is a conservative estimate: could also check beta_offset and more accurate chroma_qp
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    if(!FRAME_MBAFF){
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        int qp_thresh = 15 - h->slice_alpha_c0_offset - FFMAX3(0, h->pps.chroma_qp_index_offset[0], h->pps.chroma_qp_index_offset[1]);
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        int qp = s->current_picture.qscale_table[mb_xy];
        if(qp <= qp_thresh
           && (mb_x == 0 || ((qp + s->current_picture.qscale_table[mb_xy-1] + 1)>>1) <= qp_thresh)
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           && (h->top_mb_xy < 0 || ((qp + s->current_picture.qscale_table[h->top_mb_xy] + 1)>>1) <= qp_thresh)){
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            return;
        }
    }

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    // CAVLC 8x8dct requires NNZ values for residual decoding that differ from what the loop filter needs
    if(!h->pps.cabac && h->pps.transform_8x8_mode){
        int top_type, left_type[2];
        top_type     = s->current_picture.mb_type[h->top_mb_xy]    ;
        left_type[0] = s->current_picture.mb_type[h->left_mb_xy[0]];
        left_type[1] = s->current_picture.mb_type[h->left_mb_xy[1]];

        if(IS_8x8DCT(top_type)){
            h->non_zero_count_cache[4+8*0]=
            h->non_zero_count_cache[5+8*0]= h->cbp_table[h->top_mb_xy] & 4;
            h->non_zero_count_cache[6+8*0]=
            h->non_zero_count_cache[7+8*0]= h->cbp_table[h->top_mb_xy] & 8;
        }
        if(IS_8x8DCT(left_type[0])){
            h->non_zero_count_cache[3+8*1]=
            h->non_zero_count_cache[3+8*2]= h->cbp_table[h->left_mb_xy[0]]&2; //FIXME check MBAFF
        }
        if(IS_8x8DCT(left_type[1])){
            h->non_zero_count_cache[3+8*3]=
            h->non_zero_count_cache[3+8*4]= h->cbp_table[h->left_mb_xy[1]]&8; //FIXME check MBAFF
        }

        if(IS_8x8DCT(mb_type)){
            h->non_zero_count_cache[scan8[0   ]]= h->non_zero_count_cache[scan8[1   ]]=
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            h->non_zero_count_cache[scan8[2   ]]= h->non_zero_count_cache[scan8[3   ]]= h->cbp & 1;
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            h->non_zero_count_cache[scan8[0+ 4]]= h->non_zero_count_cache[scan8[1+ 4]]=
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            h->non_zero_count_cache[scan8[2+ 4]]= h->non_zero_count_cache[scan8[3+ 4]]= h->cbp & 2;
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            h->non_zero_count_cache[scan8[0+ 8]]= h->non_zero_count_cache[scan8[1+ 8]]=
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            h->non_zero_count_cache[scan8[2+ 8]]= h->non_zero_count_cache[scan8[3+ 8]]= h->cbp & 4;
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            h->non_zero_count_cache[scan8[0+12]]= h->non_zero_count_cache[scan8[1+12]]=
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            h->non_zero_count_cache[scan8[2+12]]= h->non_zero_count_cache[scan8[3+12]]= h->cbp & 8;
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        }
    }

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6606
    if (FRAME_MBAFF
6607
            // left mb is in picture
6608
            && h->slice_table[mb_xy-1] != 0xFFFF
6609
            // and current and left pair do not have the same interlaced type
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6610
            && (IS_INTERLACED(mb_type) != IS_INTERLACED(s->current_picture.mb_type[mb_xy-1]))
6611 6612 6613
            // and left mb is in the same slice if deblocking_filter == 2
            && (h->deblocking_filter!=2 || h->slice_table[mb_xy-1] == h->slice_table[mb_xy])) {
        /* First vertical edge is different in MBAFF frames
6614
         * There are 8 different bS to compute and 2 different Qp
6615
         */
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        const int pair_xy = mb_x + (mb_y&~1)*s->mb_stride;
        const int left_mb_xy[2] = { pair_xy-1, pair_xy-1+s->mb_stride };
6618
        int16_t bS[8];
6619
        int qp[2];
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        int bqp[2];
        int rqp[2];
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6622
        int mb_qp, mbn0_qp, mbn1_qp;
6623 6624
        int i;
        first_vertical_edge_done = 1;
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        if( IS_INTRA(mb_type) )
            bS[0] = bS[1] = bS[2] = bS[3] = bS[4] = bS[5] = bS[6] = bS[7] = 4;
        else {
            for( i = 0; i < 8; i++ ) {
                int mbn_xy = MB_FIELD ? left_mb_xy[i>>2] : left_mb_xy[i&1];

                if( IS_INTRA( s->current_picture.mb_type[mbn_xy] ) )
                    bS[i] = 4;
                else if( h->non_zero_count_cache[12+8*(i>>1)] != 0 ||
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6635 6636 6637 6638
                         ((!h->pps.cabac && IS_8x8DCT(s->current_picture.mb_type[mbn_xy])) ?
                            (h->cbp_table[mbn_xy] & ((MB_FIELD ? (i&2) : (mb_y&1)) ? 8 : 2))
                                                                       :
                            h->non_zero_count[mbn_xy][MB_FIELD ? i&3 : (i>>2)+(mb_y&1)*2]))
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6639 6640 6641
                    bS[i] = 2;
                else
                    bS[i] = 1;
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            }
        }

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6645 6646 6647 6648
        mb_qp = s->current_picture.qscale_table[mb_xy];
        mbn0_qp = s->current_picture.qscale_table[left_mb_xy[0]];
        mbn1_qp = s->current_picture.qscale_table[left_mb_xy[1]];
        qp[0] = ( mb_qp + mbn0_qp + 1 ) >> 1;
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        bqp[0] = ( get_chroma_qp( h, 0, mb_qp ) +
                   get_chroma_qp( h, 0, mbn0_qp ) + 1 ) >> 1;
        rqp[0] = ( get_chroma_qp( h, 1, mb_qp ) +
                   get_chroma_qp( h, 1, mbn0_qp ) + 1 ) >> 1;
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6653
        qp[1] = ( mb_qp + mbn1_qp + 1 ) >> 1;
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        bqp[1] = ( get_chroma_qp( h, 0, mb_qp ) +
                   get_chroma_qp( h, 0, mbn1_qp ) + 1 ) >> 1;
        rqp[1] = ( get_chroma_qp( h, 1, mb_qp ) +
                   get_chroma_qp( h, 1, mbn1_qp ) + 1 ) >> 1;
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6658 6659

        /* Filter edge */
6660
        tprintf(s->avctx, "filter mb:%d/%d MBAFF, QPy:%d/%d, QPb:%d/%d QPr:%d/%d ls:%d uvls:%d", mb_x, mb_y, qp[0], qp[1], bqp[0], bqp[1], rqp[0], rqp[1], linesize, uvlinesize);
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6661
        { int i; for (i = 0; i < 8; i++) tprintf(s->avctx, " bS[%d]:%d", i, bS[i]); tprintf(s->avctx, "\n"); }
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6662
        filter_mb_mbaff_edgev ( h, &img_y [0], linesize,   bS, qp );
6663 6664
        filter_mb_mbaff_edgecv( h, &img_cb[0], uvlinesize, bS, bqp );
        filter_mb_mbaff_edgecv( h, &img_cr[0], uvlinesize, bS, rqp );
6665
    }
6666

6667
#if CONFIG_SMALL
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    for( dir = 0; dir < 2; dir++ )
        filter_mb_dir(h, mb_x, mb_y, img_y, img_cb, img_cr, linesize, uvlinesize, mb_xy, mb_type, mvy_limit, dir ? 0 : first_vertical_edge_done, dir);
#else
    filter_mb_dir(h, mb_x, mb_y, img_y, img_cb, img_cr, linesize, uvlinesize, mb_xy, mb_type, mvy_limit, first_vertical_edge_done, 0);
    filter_mb_dir(h, mb_x, mb_y, img_y, img_cb, img_cr, linesize, uvlinesize, mb_xy, mb_type, mvy_limit, 0, 1);
#endif
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}

6676 6677
static int decode_slice(struct AVCodecContext *avctx, void *arg){
    H264Context *h = *(void**)arg;
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    MpegEncContext * const s = &h->s;
    const int part_mask= s->partitioned_frame ? (AC_END|AC_ERROR) : 0x7F;

    s->mb_skip_run= -1;

6683
    h->is_complex = FRAME_MBAFF || s->picture_structure != PICT_FRAME || s->codec_id != CODEC_ID_H264 ||
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6684
                    (CONFIG_GRAY && (s->flags&CODEC_FLAG_GRAY));
6685

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    if( h->pps.cabac ) {
        int i;
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6688

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        /* realign */
        align_get_bits( &s->gb );

        /* init cabac */
6693
        ff_init_cabac_states( &h->cabac);
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        ff_init_cabac_decoder( &h->cabac,
                               s->gb.buffer + get_bits_count(&s->gb)/8,
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6696
                               ( s->gb.size_in_bits - get_bits_count(&s->gb) + 7)/8);
6697
        /* calculate pre-state */
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6698
        for( i= 0; i < 460; i++ ) {
6699
            int pre;
6700
            if( h->slice_type_nos == FF_I_TYPE )
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6701
                pre = av_clip( ((cabac_context_init_I[i][0] * s->qscale) >>4 ) + cabac_context_init_I[i][1], 1, 126 );
6702
            else
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6703
                pre = av_clip( ((cabac_context_init_PB[h->cabac_init_idc][i][0] * s->qscale) >>4 ) + cabac_context_init_PB[h->cabac_init_idc][i][1], 1, 126 );
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            if( pre <= 63 )
6706
                h->cabac_state[i] = 2 * ( 63 - pre ) + 0;
6707
            else
6708
                h->cabac_state[i] = 2 * ( pre - 64 ) + 1;
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6709
        }
6710

6711
        for(;;){
6712
//START_TIMER
6713
            int ret = decode_mb_cabac(h);
6714
            int eos;
6715
//STOP_TIMER("decode_mb_cabac")
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6716

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6717
            if(ret>=0) hl_decode_mb(h);
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6718

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6719
            if( ret >= 0 && FRAME_MBAFF ) { //FIXME optimal? or let mb_decode decode 16x32 ?
6720 6721
                s->mb_y++;

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6722
                ret = decode_mb_cabac(h);
6723

6724
                if(ret>=0) hl_decode_mb(h);
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                s->mb_y--;
            }
6727
            eos = get_cabac_terminate( &h->cabac );
6728

6729
            if( ret < 0 || h->cabac.bytestream > h->cabac.bytestream_end + 2) {
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6730
                av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d, bytestream (%td)\n", s->mb_x, s->mb_y, h->cabac.bytestream_end - h->cabac.bytestream);
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                ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
                return -1;
            }

            if( ++s->mb_x >= s->mb_width ) {
                s->mb_x = 0;
                ff_draw_horiz_band(s, 16*s->mb_y, 16);
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6738
                ++s->mb_y;
6739
                if(FIELD_OR_MBAFF_PICTURE) {
6740 6741
                    ++s->mb_y;
                }
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            }

6744
            if( eos || s->mb_y >= s->mb_height ) {
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6745
                tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
6746
                ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
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                return 0;
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            }
        }

    } else {
        for(;;){
            int ret = decode_mb_cavlc(h);

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6755
            if(ret>=0) hl_decode_mb(h);
6756

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6757
            if(ret>=0 && FRAME_MBAFF){ //FIXME optimal? or let mb_decode decode 16x32 ?
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                s->mb_y++;
                ret = decode_mb_cavlc(h);

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6761
                if(ret>=0) hl_decode_mb(h);
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                s->mb_y--;
            }

            if(ret<0){
                av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
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                ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);

                return -1;
            }
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            if(++s->mb_x >= s->mb_width){
                s->mb_x=0;
                ff_draw_horiz_band(s, 16*s->mb_y, 16);
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                ++s->mb_y;
6776
                if(FIELD_OR_MBAFF_PICTURE) {
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                    ++s->mb_y;
                }
                if(s->mb_y >= s->mb_height){
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6780
                    tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
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                    if(get_bits_count(&s->gb) == s->gb.size_in_bits ) {
                        ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);

                        return 0;
                    }else{
                        ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);

                        return -1;
                    }
                }
            }

            if(get_bits_count(&s->gb) >= s->gb.size_in_bits && s->mb_skip_run<=0){
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6795
                tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
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                if(get_bits_count(&s->gb) == s->gb.size_in_bits ){
                    ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);

                    return 0;
                }else{
                    ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);

                    return -1;
                }
            }
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        }
    }
6808

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#if 0
    for(;s->mb_y < s->mb_height; s->mb_y++){
        for(;s->mb_x < s->mb_width; s->mb_x++){
            int ret= decode_mb(h);
6813

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            hl_decode_mb(h);

            if(ret<0){
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6817
                av_log(s->avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
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                ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);

                return -1;
            }
6822

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            if(++s->mb_x >= s->mb_width){
                s->mb_x=0;
                if(++s->mb_y >= s->mb_height){
                    if(get_bits_count(s->gb) == s->gb.size_in_bits){
                        ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);

                        return 0;
                    }else{
                        ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);

                        return -1;
                    }
                }
            }
6837

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            if(get_bits_count(s->?gb) >= s->gb?.size_in_bits){
                if(get_bits_count(s->gb) == s->gb.size_in_bits){
                    ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);

                    return 0;
                }else{
                    ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);

                    return -1;
                }
            }
        }
        s->mb_x=0;
        ff_draw_horiz_band(s, 16*s->mb_y, 16);
    }
#endif
    return -1; //not reached
}

6857 6858 6859
static int decode_picture_timing(H264Context *h){
    MpegEncContext * const s = &h->s;
    if(h->sps.nal_hrd_parameters_present_flag || h->sps.vcl_hrd_parameters_present_flag){
6860
        h->sei_cpb_removal_delay = get_bits(&s->gb, h->sps.cpb_removal_delay_length);
6861
        h->sei_dpb_output_delay = get_bits(&s->gb, h->sps.dpb_output_delay_length);
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    }
    if(h->sps.pic_struct_present_flag){
        unsigned int i, num_clock_ts;
        h->sei_pic_struct = get_bits(&s->gb, 4);
6866
        h->sei_ct_type    = 0;
6867 6868 6869 6870 6871 6872 6873 6874 6875

        if (h->sei_pic_struct > SEI_PIC_STRUCT_FRAME_TRIPLING)
            return -1;

        num_clock_ts = sei_num_clock_ts_table[h->sei_pic_struct];

        for (i = 0 ; i < num_clock_ts ; i++){
            if(get_bits(&s->gb, 1)){                  /* clock_timestamp_flag */
                unsigned int full_timestamp_flag;
6876
                h->sei_ct_type |= 1<<get_bits(&s->gb, 2);
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                skip_bits(&s->gb, 1);                 /* nuit_field_based_flag */
                skip_bits(&s->gb, 5);                 /* counting_type */
                full_timestamp_flag = get_bits(&s->gb, 1);
                skip_bits(&s->gb, 1);                 /* discontinuity_flag */
                skip_bits(&s->gb, 1);                 /* cnt_dropped_flag */
                skip_bits(&s->gb, 8);                 /* n_frames */
                if(full_timestamp_flag){
                    skip_bits(&s->gb, 6);             /* seconds_value 0..59 */
                    skip_bits(&s->gb, 6);             /* minutes_value 0..59 */
                    skip_bits(&s->gb, 5);             /* hours_value 0..23 */
                }else{
                    if(get_bits(&s->gb, 1)){          /* seconds_flag */
                        skip_bits(&s->gb, 6);         /* seconds_value range 0..59 */
                        if(get_bits(&s->gb, 1)){      /* minutes_flag */
                            skip_bits(&s->gb, 6);     /* minutes_value 0..59 */
                            if(get_bits(&s->gb, 1))   /* hours_flag */
                                skip_bits(&s->gb, 5); /* hours_value 0..23 */
                        }
                    }
                }
                if(h->sps.time_offset_length > 0)
                    skip_bits(&s->gb, h->sps.time_offset_length); /* time_offset */
            }
        }
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        if(s->avctx->debug & FF_DEBUG_PICT_INFO)
            av_log(s->avctx, AV_LOG_DEBUG, "ct_type:%X pic_struct:%d\n", h->sei_ct_type, h->sei_pic_struct);
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    }
    return 0;
}

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static int decode_unregistered_user_data(H264Context *h, int size){
    MpegEncContext * const s = &h->s;
    uint8_t user_data[16+256];
    int e, build, i;
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6913 6914
    if(size<16)
        return -1;
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6916 6917 6918
    for(i=0; i<sizeof(user_data)-1 && i<size; i++){
        user_data[i]= get_bits(&s->gb, 8);
    }
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    user_data[i]= 0;
    e= sscanf(user_data+16, "x264 - core %d"/*%s - H.264/MPEG-4 AVC codec - Copyleft 2005 - http://www.videolan.org/x264.html*/, &build);
    if(e==1 && build>=0)
        h->x264_build= build;
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    if(s->avctx->debug & FF_DEBUG_BUGS)
        av_log(s->avctx, AV_LOG_DEBUG, "user data:\"%s\"\n", user_data+16);

    for(; i<size; i++)
        skip_bits(&s->gb, 8);
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    return 0;
}

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static int decode_recovery_point(H264Context *h){
    MpegEncContext * const s = &h->s;

    h->sei_recovery_frame_cnt = get_ue_golomb(&s->gb);
    skip_bits(&s->gb, 4);       /* 1b exact_match_flag, 1b broken_link_flag, 2b changing_slice_group_idc */

    return 0;
}

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static int decode_buffering_period(H264Context *h){
    MpegEncContext * const s = &h->s;
    unsigned int sps_id;
    int sched_sel_idx;
    SPS *sps;

    sps_id = get_ue_golomb_31(&s->gb);
    if(sps_id > 31 || !h->sps_buffers[sps_id]) {
        av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS %d referenced in buffering period\n", sps_id);
        return -1;
    }
    sps = h->sps_buffers[sps_id];

    // NOTE: This is really so duplicated in the standard... See H.264, D.1.1
    if (sps->nal_hrd_parameters_present_flag) {
        for (sched_sel_idx = 0; sched_sel_idx < sps->cpb_cnt; sched_sel_idx++) {
            h->initial_cpb_removal_delay[sched_sel_idx] = get_bits(&s->gb, sps->initial_cpb_removal_delay_length);
            skip_bits(&s->gb, sps->initial_cpb_removal_delay_length); // initial_cpb_removal_delay_offset
        }
    }
    if (sps->vcl_hrd_parameters_present_flag) {
        for (sched_sel_idx = 0; sched_sel_idx < sps->cpb_cnt; sched_sel_idx++) {
            h->initial_cpb_removal_delay[sched_sel_idx] = get_bits(&s->gb, sps->initial_cpb_removal_delay_length);
            skip_bits(&s->gb, sps->initial_cpb_removal_delay_length); // initial_cpb_removal_delay_offset
        }
    }

    h->sei_buffering_period_present = 1;
    return 0;
}

6974
int ff_h264_decode_sei(H264Context *h){
6975
    MpegEncContext * const s = &h->s;
6976

6977 6978
    while(get_bits_count(&s->gb) + 16 < s->gb.size_in_bits){
        int size, type;
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6980 6981 6982 6983
        type=0;
        do{
            type+= show_bits(&s->gb, 8);
        }while(get_bits(&s->gb, 8) == 255);
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        size=0;
        do{
            size+= show_bits(&s->gb, 8);
        }while(get_bits(&s->gb, 8) == 255);
6989

6990
        switch(type){
6991
        case SEI_TYPE_PIC_TIMING: // Picture timing SEI
6992 6993 6994
            if(decode_picture_timing(h) < 0)
                return -1;
            break;
6995
        case SEI_TYPE_USER_DATA_UNREGISTERED:
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6996
            if(decode_unregistered_user_data(h, size) < 0)
6997 6998
                return -1;
            break;
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        case SEI_TYPE_RECOVERY_POINT:
            if(decode_recovery_point(h) < 0)
                return -1;
            break;
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        case SEI_BUFFERING_PERIOD:
            if(decode_buffering_period(h) < 0)
                return -1;
            break;
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        default:
            skip_bits(&s->gb, 8*size);
        }
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        //FIXME check bits here
        align_get_bits(&s->gb);
    }

    return 0;
}

7018
static inline int decode_hrd_parameters(H264Context *h, SPS *sps){
7019 7020
    MpegEncContext * const s = &h->s;
    int cpb_count, i;
7021
    cpb_count = get_ue_golomb_31(&s->gb) + 1;
7022 7023 7024 7025 7026 7027

    if(cpb_count > 32U){
        av_log(h->s.avctx, AV_LOG_ERROR, "cpb_count %d invalid\n", cpb_count);
        return -1;
    }

7028 7029 7030 7031 7032 7033 7034
    get_bits(&s->gb, 4); /* bit_rate_scale */
    get_bits(&s->gb, 4); /* cpb_size_scale */
    for(i=0; i<cpb_count; i++){
        get_ue_golomb(&s->gb); /* bit_rate_value_minus1 */
        get_ue_golomb(&s->gb); /* cpb_size_value_minus1 */
        get_bits1(&s->gb);     /* cbr_flag */
    }
7035
    sps->initial_cpb_removal_delay_length = get_bits(&s->gb, 5) + 1;
7036 7037 7038
    sps->cpb_removal_delay_length = get_bits(&s->gb, 5) + 1;
    sps->dpb_output_delay_length = get_bits(&s->gb, 5) + 1;
    sps->time_offset_length = get_bits(&s->gb, 5);
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cehoyos committed
7039
    sps->cpb_cnt = cpb_count;
7040
    return 0;
7041 7042
}

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7043 7044
static inline int decode_vui_parameters(H264Context *h, SPS *sps){
    MpegEncContext * const s = &h->s;
7045 7046
    int aspect_ratio_info_present_flag;
    unsigned int aspect_ratio_idc;
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7047 7048

    aspect_ratio_info_present_flag= get_bits1(&s->gb);
7049

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7050 7051 7052
    if( aspect_ratio_info_present_flag ) {
        aspect_ratio_idc= get_bits(&s->gb, 8);
        if( aspect_ratio_idc == EXTENDED_SAR ) {
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7053 7054
            sps->sar.num= get_bits(&s->gb, 16);
            sps->sar.den= get_bits(&s->gb, 16);
7055
        }else if(aspect_ratio_idc < FF_ARRAY_ELEMS(pixel_aspect)){
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michael committed
7056
            sps->sar=  pixel_aspect[aspect_ratio_idc];
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michaelni committed
7057
        }else{
7058
            av_log(h->s.avctx, AV_LOG_ERROR, "illegal aspect ratio\n");
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michaelni committed
7059 7060 7061
            return -1;
        }
    }else{
7062
        sps->sar.num=
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michael committed
7063
        sps->sar.den= 0;
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michaelni committed
7064 7065
    }
//            s->avctx->aspect_ratio= sar_width*s->width / (float)(s->height*sar_height);
7066 7067 7068 7069 7070 7071 7072 7073 7074 7075 7076 7077 7078 7079 7080 7081

    if(get_bits1(&s->gb)){      /* overscan_info_present_flag */
        get_bits1(&s->gb);      /* overscan_appropriate_flag */
    }

    if(get_bits1(&s->gb)){      /* video_signal_type_present_flag */
        get_bits(&s->gb, 3);    /* video_format */
        get_bits1(&s->gb);      /* video_full_range_flag */
        if(get_bits1(&s->gb)){  /* colour_description_present_flag */
            get_bits(&s->gb, 8); /* colour_primaries */
            get_bits(&s->gb, 8); /* transfer_characteristics */
            get_bits(&s->gb, 8); /* matrix_coefficients */
        }
    }

    if(get_bits1(&s->gb)){      /* chroma_location_info_present_flag */
7082
        s->avctx->chroma_sample_location = get_ue_golomb(&s->gb)+1;  /* chroma_sample_location_type_top_field */
7083 7084 7085 7086 7087 7088 7089
        get_ue_golomb(&s->gb);  /* chroma_sample_location_type_bottom_field */
    }

    sps->timing_info_present_flag = get_bits1(&s->gb);
    if(sps->timing_info_present_flag){
        sps->num_units_in_tick = get_bits_long(&s->gb, 32);
        sps->time_scale = get_bits_long(&s->gb, 32);
7090
        if(sps->num_units_in_tick-1 > 0x7FFFFFFEU || sps->time_scale-1 > 0x7FFFFFFEU){
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7091
            av_log(h->s.avctx, AV_LOG_ERROR, "time_scale/num_units_in_tick invalid or unsupported (%d/%d)\n", sps->time_scale, sps->num_units_in_tick);
7092 7093
            return -1;
        }
7094 7095 7096
        sps->fixed_frame_rate_flag = get_bits1(&s->gb);
    }

7097 7098
    sps->nal_hrd_parameters_present_flag = get_bits1(&s->gb);
    if(sps->nal_hrd_parameters_present_flag)
7099 7100
        if(decode_hrd_parameters(h, sps) < 0)
            return -1;
7101 7102
    sps->vcl_hrd_parameters_present_flag = get_bits1(&s->gb);
    if(sps->vcl_hrd_parameters_present_flag)
7103 7104
        if(decode_hrd_parameters(h, sps) < 0)
            return -1;
7105
    if(sps->nal_hrd_parameters_present_flag || sps->vcl_hrd_parameters_present_flag)
7106
        get_bits1(&s->gb);     /* low_delay_hrd_flag */
7107
    sps->pic_struct_present_flag = get_bits1(&s->gb);
7108 7109 7110 7111 7112 7113 7114 7115

    sps->bitstream_restriction_flag = get_bits1(&s->gb);
    if(sps->bitstream_restriction_flag){
        get_bits1(&s->gb);     /* motion_vectors_over_pic_boundaries_flag */
        get_ue_golomb(&s->gb); /* max_bytes_per_pic_denom */
        get_ue_golomb(&s->gb); /* max_bits_per_mb_denom */
        get_ue_golomb(&s->gb); /* log2_max_mv_length_horizontal */
        get_ue_golomb(&s->gb); /* log2_max_mv_length_vertical */
7116
        sps->num_reorder_frames= get_ue_golomb(&s->gb);
7117 7118
        get_ue_golomb(&s->gb); /*max_dec_frame_buffering*/

7119 7120
        if(sps->num_reorder_frames > 16U /*max_dec_frame_buffering || max_dec_frame_buffering > 16*/){
            av_log(h->s.avctx, AV_LOG_ERROR, "illegal num_reorder_frames %d\n", sps->num_reorder_frames);
7121 7122
            return -1;
        }
7123 7124
    }

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7125 7126 7127
    return 0;
}

7128 7129
static void decode_scaling_list(H264Context *h, uint8_t *factors, int size,
                                const uint8_t *jvt_list, const uint8_t *fallback_list){
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7130 7131
    MpegEncContext * const s = &h->s;
    int i, last = 8, next = 8;
7132
    const uint8_t *scan = size == 16 ? zigzag_scan : ff_zigzag_direct;
7133 7134
    if(!get_bits1(&s->gb)) /* matrix not written, we use the predicted one */
        memcpy(factors, fallback_list, size*sizeof(uint8_t));
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7135 7136 7137 7138
    else
    for(i=0;i<size;i++){
        if(next)
            next = (last + get_se_golomb(&s->gb)) & 0xff;
7139 7140
        if(!i && !next){ /* matrix not written, we use the preset one */
            memcpy(factors, jvt_list, size*sizeof(uint8_t));
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7141 7142 7143 7144 7145 7146 7147 7148 7149 7150 7151 7152 7153 7154 7155 7156 7157 7158
            break;
        }
        last = factors[scan[i]] = next ? next : last;
    }
}

static void decode_scaling_matrices(H264Context *h, SPS *sps, PPS *pps, int is_sps,
                                   uint8_t (*scaling_matrix4)[16], uint8_t (*scaling_matrix8)[64]){
    MpegEncContext * const s = &h->s;
    int fallback_sps = !is_sps && sps->scaling_matrix_present;
    const uint8_t *fallback[4] = {
        fallback_sps ? sps->scaling_matrix4[0] : default_scaling4[0],
        fallback_sps ? sps->scaling_matrix4[3] : default_scaling4[1],
        fallback_sps ? sps->scaling_matrix8[0] : default_scaling8[0],
        fallback_sps ? sps->scaling_matrix8[1] : default_scaling8[1]
    };
    if(get_bits1(&s->gb)){
        sps->scaling_matrix_present |= is_sps;
7159 7160 7161 7162 7163 7164
        decode_scaling_list(h,scaling_matrix4[0],16,default_scaling4[0],fallback[0]); // Intra, Y
        decode_scaling_list(h,scaling_matrix4[1],16,default_scaling4[0],scaling_matrix4[0]); // Intra, Cr
        decode_scaling_list(h,scaling_matrix4[2],16,default_scaling4[0],scaling_matrix4[1]); // Intra, Cb
        decode_scaling_list(h,scaling_matrix4[3],16,default_scaling4[1],fallback[1]); // Inter, Y
        decode_scaling_list(h,scaling_matrix4[4],16,default_scaling4[1],scaling_matrix4[3]); // Inter, Cr
        decode_scaling_list(h,scaling_matrix4[5],16,default_scaling4[1],scaling_matrix4[4]); // Inter, Cb
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lorenm committed
7165
        if(is_sps || pps->transform_8x8_mode){
7166 7167
            decode_scaling_list(h,scaling_matrix8[0],64,default_scaling8[0],fallback[2]);  // Intra, Y
            decode_scaling_list(h,scaling_matrix8[1],64,default_scaling8[1],fallback[3]);  // Inter, Y
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lorenm committed
7168 7169 7170 7171
        }
    }
}

7172
int ff_h264_decode_seq_parameter_set(H264Context *h){
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michaelni committed
7173
    MpegEncContext * const s = &h->s;
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michaelni committed
7174
    int profile_idc, level_idc;
7175
    unsigned int sps_id;
7176
    int i;
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michaelni committed
7177
    SPS *sps;
7178

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michaelni committed
7179
    profile_idc= get_bits(&s->gb, 8);
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7180 7181 7182
    get_bits1(&s->gb);   //constraint_set0_flag
    get_bits1(&s->gb);   //constraint_set1_flag
    get_bits1(&s->gb);   //constraint_set2_flag
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7183 7184
    get_bits1(&s->gb);   //constraint_set3_flag
    get_bits(&s->gb, 4); // reserved
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michaelni committed
7185
    level_idc= get_bits(&s->gb, 8);
7186
    sps_id= get_ue_golomb_31(&s->gb);
7187

7188 7189 7190 7191 7192
    if(sps_id >= MAX_SPS_COUNT) {
        av_log(h->s.avctx, AV_LOG_ERROR, "sps_id (%d) out of range\n", sps_id);
        return -1;
    }
    sps= av_mallocz(sizeof(SPS));
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benoit committed
7193
    if(sps == NULL)
7194 7195
        return -1;

michaelni's avatar
michaelni committed
7196 7197
    sps->profile_idc= profile_idc;
    sps->level_idc= level_idc;
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7198

7199 7200 7201 7202
    memset(sps->scaling_matrix4, 16, sizeof(sps->scaling_matrix4));
    memset(sps->scaling_matrix8, 16, sizeof(sps->scaling_matrix8));
    sps->scaling_matrix_present = 0;

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lorenm committed
7203
    if(sps->profile_idc >= 100){ //high profile
7204
        sps->chroma_format_idc= get_ue_golomb_31(&s->gb);
7205
        if(sps->chroma_format_idc == 3)
7206 7207 7208
            sps->residual_color_transform_flag = get_bits1(&s->gb);
        sps->bit_depth_luma   = get_ue_golomb(&s->gb) + 8;
        sps->bit_depth_chroma = get_ue_golomb(&s->gb) + 8;
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lorenm committed
7209
        sps->transform_bypass = get_bits1(&s->gb);
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lorenm committed
7210
        decode_scaling_matrices(h, sps, NULL, 1, sps->scaling_matrix4, sps->scaling_matrix8);
7211 7212 7213
    }else{
        sps->chroma_format_idc= 1;
    }
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7214

michaelni's avatar
michaelni committed
7215
    sps->log2_max_frame_num= get_ue_golomb(&s->gb) + 4;
7216
    sps->poc_type= get_ue_golomb_31(&s->gb);
7217

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7218 7219 7220 7221 7222 7223
    if(sps->poc_type == 0){ //FIXME #define
        sps->log2_max_poc_lsb= get_ue_golomb(&s->gb) + 4;
    } else if(sps->poc_type == 1){//FIXME #define
        sps->delta_pic_order_always_zero_flag= get_bits1(&s->gb);
        sps->offset_for_non_ref_pic= get_se_golomb(&s->gb);
        sps->offset_for_top_to_bottom_field= get_se_golomb(&s->gb);
7224
        sps->poc_cycle_length                = get_ue_golomb(&s->gb);
7225

7226 7227
        if((unsigned)sps->poc_cycle_length >= FF_ARRAY_ELEMS(sps->offset_for_ref_frame)){
            av_log(h->s.avctx, AV_LOG_ERROR, "poc_cycle_length overflow %u\n", sps->poc_cycle_length);
7228
            goto fail;
7229
        }
7230

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michaelni committed
7231 7232
        for(i=0; i<sps->poc_cycle_length; i++)
            sps->offset_for_ref_frame[i]= get_se_golomb(&s->gb);
7233
    }else if(sps->poc_type != 2){
7234
        av_log(h->s.avctx, AV_LOG_ERROR, "illegal POC type %d\n", sps->poc_type);
7235
        goto fail;
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michaelni committed
7236 7237
    }

7238
    sps->ref_frame_count= get_ue_golomb_31(&s->gb);
7239
    if(sps->ref_frame_count > MAX_PICTURE_COUNT-2 || sps->ref_frame_count >= 32U){
7240
        av_log(h->s.avctx, AV_LOG_ERROR, "too many reference frames\n");
7241
        goto fail;
7242
    }
michaelni's avatar
michaelni committed
7243
    sps->gaps_in_frame_num_allowed_flag= get_bits1(&s->gb);
7244 7245 7246 7247
    sps->mb_width = get_ue_golomb(&s->gb) + 1;
    sps->mb_height= get_ue_golomb(&s->gb) + 1;
    if((unsigned)sps->mb_width >= INT_MAX/16 || (unsigned)sps->mb_height >= INT_MAX/16 ||
       avcodec_check_dimensions(NULL, 16*sps->mb_width, 16*sps->mb_height)){
7248
        av_log(h->s.avctx, AV_LOG_ERROR, "mb_width/height overflow\n");
7249
        goto fail;
7250
    }
7251

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michaelni committed
7252 7253 7254 7255 7256 7257 7258 7259
    sps->frame_mbs_only_flag= get_bits1(&s->gb);
    if(!sps->frame_mbs_only_flag)
        sps->mb_aff= get_bits1(&s->gb);
    else
        sps->mb_aff= 0;

    sps->direct_8x8_inference_flag= get_bits1(&s->gb);

lorenm's avatar
lorenm committed
7260 7261
#ifndef ALLOW_INTERLACE
    if(sps->mb_aff)
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diego committed
7262
        av_log(h->s.avctx, AV_LOG_ERROR, "MBAFF support not included; enable it at compile-time.\n");
lorenm's avatar
lorenm committed
7263
#endif
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michaelni committed
7264 7265 7266 7267 7268 7269 7270
    sps->crop= get_bits1(&s->gb);
    if(sps->crop){
        sps->crop_left  = get_ue_golomb(&s->gb);
        sps->crop_right = get_ue_golomb(&s->gb);
        sps->crop_top   = get_ue_golomb(&s->gb);
        sps->crop_bottom= get_ue_golomb(&s->gb);
        if(sps->crop_left || sps->crop_top){
7271
            av_log(h->s.avctx, AV_LOG_ERROR, "insane cropping not completely supported, this could look slightly wrong ...\n");
michaelni's avatar
michaelni committed
7272
        }
7273
        if(sps->crop_right >= 8 || sps->crop_bottom >= (8>> !sps->frame_mbs_only_flag)){
7274 7275
            av_log(h->s.avctx, AV_LOG_ERROR, "brainfart cropping not supported, this could look slightly wrong ...\n");
        }
michaelni's avatar
michaelni committed
7276
    }else{
7277 7278 7279
        sps->crop_left  =
        sps->crop_right =
        sps->crop_top   =
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michaelni committed
7280 7281 7282
        sps->crop_bottom= 0;
    }

michaelni's avatar
michaelni committed
7283 7284
    sps->vui_parameters_present_flag= get_bits1(&s->gb);
    if( sps->vui_parameters_present_flag )
7285 7286
        if (decode_vui_parameters(h, sps) < 0)
            goto fail;
7287

michaelni's avatar
michaelni committed
7288
    if(s->avctx->debug&FF_DEBUG_PICT_INFO){
michael's avatar
michael committed
7289
        av_log(h->s.avctx, AV_LOG_DEBUG, "sps:%u profile:%d/%d poc:%d ref:%d %dx%d %s %s crop:%d/%d/%d/%d %s %s %d/%d\n",
michaelni's avatar
michaelni committed
7290 7291 7292 7293 7294 7295
               sps_id, sps->profile_idc, sps->level_idc,
               sps->poc_type,
               sps->ref_frame_count,
               sps->mb_width, sps->mb_height,
               sps->frame_mbs_only_flag ? "FRM" : (sps->mb_aff ? "MB-AFF" : "PIC-AFF"),
               sps->direct_8x8_inference_flag ? "8B8" : "",
7296 7297
               sps->crop_left, sps->crop_right,
               sps->crop_top, sps->crop_bottom,
7298
               sps->vui_parameters_present_flag ? "VUI" : "",
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michael committed
7299 7300 7301
               ((const char*[]){"Gray","420","422","444"})[sps->chroma_format_idc],
               sps->timing_info_present_flag ? sps->num_units_in_tick : 0,
               sps->timing_info_present_flag ? sps->time_scale : 0
michaelni's avatar
michaelni committed
7302 7303
               );
    }
7304

7305 7306
    av_free(h->sps_buffers[sps_id]);
    h->sps_buffers[sps_id]= sps;
7307
    h->sps = *sps;
michaelni's avatar
michaelni committed
7308
    return 0;
7309 7310 7311
fail:
    av_free(sps);
    return -1;
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michaelni committed
7312 7313
}

7314
static void
7315
build_qp_table(PPS *pps, int t, int index)
7316 7317
{
    int i;
7318 7319
    for(i = 0; i < 52; i++)
        pps->chroma_qp_table[t][i] = chroma_qp[av_clip(i + index, 0, 51)];
7320 7321
}

7322
int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length){
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michaelni committed
7323
    MpegEncContext * const s = &h->s;
7324
    unsigned int pps_id= get_ue_golomb(&s->gb);
7325 7326
    PPS *pps;

7327 7328
    if(pps_id >= MAX_PPS_COUNT) {
        av_log(h->s.avctx, AV_LOG_ERROR, "pps_id (%d) out of range\n", pps_id);
7329
        return -1;
7330
    }
7331

7332 7333 7334
    pps= av_mallocz(sizeof(PPS));
    if(pps == NULL)
        return -1;
7335
    pps->sps_id= get_ue_golomb_31(&s->gb);
7336 7337 7338 7339
    if((unsigned)pps->sps_id>=MAX_SPS_COUNT || h->sps_buffers[pps->sps_id] == NULL){
        av_log(h->s.avctx, AV_LOG_ERROR, "sps_id out of range\n");
        goto fail;
    }
7340

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michaelni committed
7341 7342 7343 7344 7345
    pps->cabac= get_bits1(&s->gb);
    pps->pic_order_present= get_bits1(&s->gb);
    pps->slice_group_count= get_ue_golomb(&s->gb) + 1;
    if(pps->slice_group_count > 1 ){
        pps->mb_slice_group_map_type= get_ue_golomb(&s->gb);
7346
        av_log(h->s.avctx, AV_LOG_ERROR, "FMO not supported\n");
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michaelni committed
7347 7348 7349 7350 7351 7352 7353 7354 7355 7356 7357 7358 7359 7360 7361 7362 7363 7364 7365 7366 7367 7368 7369 7370 7371 7372 7373 7374 7375 7376 7377
        switch(pps->mb_slice_group_map_type){
        case 0:
#if 0
|   for( i = 0; i <= num_slice_groups_minus1; i++ ) |   |        |
|    run_length[ i ]                                |1  |ue(v)   |
#endif
            break;
        case 2:
#if 0
|   for( i = 0; i < num_slice_groups_minus1; i++ )  |   |        |
|{                                                  |   |        |
|    top_left_mb[ i ]                               |1  |ue(v)   |
|    bottom_right_mb[ i ]                           |1  |ue(v)   |
|   }                                               |   |        |
#endif
            break;
        case 3:
        case 4:
        case 5:
#if 0
|   slice_group_change_direction_flag               |1  |u(1)    |
|   slice_group_change_rate_minus1                  |1  |ue(v)   |
#endif
            break;
        case 6:
#if 0
|   slice_group_id_cnt_minus1                       |1  |ue(v)   |
|   for( i = 0; i <= slice_group_id_cnt_minus1; i++ |   |        |
|)                                                  |   |        |
|    slice_group_id[ i ]                            |1  |u(v)    |
#endif
7378
            break;
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7379 7380 7381 7382
        }
    }
    pps->ref_count[0]= get_ue_golomb(&s->gb) + 1;
    pps->ref_count[1]= get_ue_golomb(&s->gb) + 1;
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michael committed
7383
    if(pps->ref_count[0]-1 > 32-1 || pps->ref_count[1]-1 > 32-1){
7384
        av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow (pps)\n");
7385
        goto fail;
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michaelni committed
7386
    }
7387

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7388 7389 7390 7391
    pps->weighted_pred= get_bits1(&s->gb);
    pps->weighted_bipred_idc= get_bits(&s->gb, 2);
    pps->init_qp= get_se_golomb(&s->gb) + 26;
    pps->init_qs= get_se_golomb(&s->gb) + 26;
7392
    pps->chroma_qp_index_offset[0]= get_se_golomb(&s->gb);
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7393 7394 7395
    pps->deblocking_filter_parameters_present= get_bits1(&s->gb);
    pps->constrained_intra_pred= get_bits1(&s->gb);
    pps->redundant_pic_cnt_present = get_bits1(&s->gb);
7396

7397 7398
    pps->transform_8x8_mode= 0;
    h->dequant_coeff_pps= -1; //contents of sps/pps can change even if id doesn't, so reinit
7399 7400
    memcpy(pps->scaling_matrix4, h->sps_buffers[pps->sps_id]->scaling_matrix4, sizeof(pps->scaling_matrix4));
    memcpy(pps->scaling_matrix8, h->sps_buffers[pps->sps_id]->scaling_matrix8, sizeof(pps->scaling_matrix8));
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lorenm committed
7401 7402 7403

    if(get_bits_count(&s->gb) < bit_length){
        pps->transform_8x8_mode= get_bits1(&s->gb);
benoit's avatar
 
benoit committed
7404
        decode_scaling_matrices(h, h->sps_buffers[pps->sps_id], pps, 0, pps->scaling_matrix4, pps->scaling_matrix8);
7405 7406 7407
        pps->chroma_qp_index_offset[1]= get_se_golomb(&s->gb); //second_chroma_qp_index_offset
    } else {
        pps->chroma_qp_index_offset[1]= pps->chroma_qp_index_offset[0];
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lorenm committed
7408
    }
7409

7410
    build_qp_table(pps, 0, pps->chroma_qp_index_offset[0]);
7411 7412
    build_qp_table(pps, 1, pps->chroma_qp_index_offset[1]);
    if(pps->chroma_qp_index_offset[0] != pps->chroma_qp_index_offset[1])
7413 7414
        h->pps.chroma_qp_diff= 1;

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michaelni committed
7415
    if(s->avctx->debug&FF_DEBUG_PICT_INFO){
7416
        av_log(h->s.avctx, AV_LOG_DEBUG, "pps:%u sps:%u %s slice_groups:%d ref:%d/%d %s qp:%d/%d/%d/%d %s %s %s %s\n",
michaelni's avatar
michaelni committed
7417 7418 7419 7420 7421
               pps_id, pps->sps_id,
               pps->cabac ? "CABAC" : "CAVLC",
               pps->slice_group_count,
               pps->ref_count[0], pps->ref_count[1],
               pps->weighted_pred ? "weighted" : "",
7422
               pps->init_qp, pps->init_qs, pps->chroma_qp_index_offset[0], pps->chroma_qp_index_offset[1],
michaelni's avatar
michaelni committed
7423 7424
               pps->deblocking_filter_parameters_present ? "LPAR" : "",
               pps->constrained_intra_pred ? "CONSTR" : "",
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lorenm committed
7425 7426
               pps->redundant_pic_cnt_present ? "REDU" : "",
               pps->transform_8x8_mode ? "8x8DCT" : ""
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michaelni committed
7427 7428
               );
    }
7429

7430 7431
    av_free(h->pps_buffers[pps_id]);
    h->pps_buffers[pps_id]= pps;
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michaelni committed
7432
    return 0;
7433 7434 7435
fail:
    av_free(pps);
    return -1;
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michaelni committed
7436 7437
}

7438 7439 7440 7441 7442 7443 7444 7445 7446 7447 7448 7449
/**
 * Call decode_slice() for each context.
 *
 * @param h h264 master context
 * @param context_count number of contexts to execute
 */
static void execute_decode_slices(H264Context *h, int context_count){
    MpegEncContext * const s = &h->s;
    AVCodecContext * const avctx= s->avctx;
    H264Context *hx;
    int i;

7450 7451
    if (s->avctx->hwaccel)
        return;
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cehoyos committed
7452
    if(s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
7453
        return;
7454
    if(context_count == 1) {
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cehoyos committed
7455
        decode_slice(avctx, &h);
7456 7457 7458
    } else {
        for(i = 1; i < context_count; i++) {
            hx = h->thread_context[i];
7459
            hx->s.error_recognition = avctx->error_recognition;
7460 7461 7462 7463
            hx->s.error_count = 0;
        }

        avctx->execute(avctx, (void *)decode_slice,
7464
                       (void **)h->thread_context, NULL, context_count, sizeof(void*));
7465 7466 7467 7468 7469

        /* pull back stuff from slices to master context */
        hx = h->thread_context[context_count - 1];
        s->mb_x = hx->s.mb_x;
        s->mb_y = hx->s.mb_y;
7470 7471
        s->dropable = hx->s.dropable;
        s->picture_structure = hx->s.picture_structure;
7472 7473 7474 7475 7476 7477
        for(i = 1; i < context_count; i++)
            h->s.error_count += h->thread_context[i]->s.error_count;
    }
}


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7478
static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
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7479 7480 7481
    MpegEncContext * const s = &h->s;
    AVCodecContext * const avctx= s->avctx;
    int buf_index=0;
7482 7483
    H264Context *hx; ///< thread context
    int context_count = 0;
7484
    int next_avc= h->is_avc ? 0 : buf_size;
7485 7486

    h->max_contexts = avctx->thread_count;
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7487
#if 0
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7488
    int i;
7489 7490
    for(i=0; i<50; i++){
        av_log(NULL, AV_LOG_ERROR,"%02X ", buf[i]);
michaelni's avatar
michaelni committed
7491 7492
    }
#endif
7493
    if(!(s->flags2 & CODEC_FLAG2_CHUNKS)){
7494
        h->current_slice = 0;
7495
        if (!s->first_field)
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7496
            s->current_picture_ptr= NULL;
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cehoyos committed
7497
        reset_sei(h);
7498 7499
    }

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7500 7501 7502 7503
    for(;;){
        int consumed;
        int dst_length;
        int bit_length;
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michael committed
7504
        const uint8_t *ptr;
7505
        int i, nalsize = 0;
7506
        int err;
7507

7508
        if(buf_index >= next_avc) {
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benoit committed
7509 7510 7511 7512
            if(buf_index >= buf_size) break;
            nalsize = 0;
            for(i = 0; i < h->nal_length_size; i++)
                nalsize = (nalsize << 8) | buf[buf_index++];
7513
            if(nalsize <= 1 || nalsize > buf_size - buf_index){
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benoit committed
7514 7515 7516 7517 7518 7519 7520 7521
                if(nalsize == 1){
                    buf_index++;
                    continue;
                }else{
                    av_log(h->s.avctx, AV_LOG_ERROR, "AVC: nal size %d\n", nalsize);
                    break;
                }
            }
7522
            next_avc= buf_index + nalsize;
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benoit committed
7523 7524 7525 7526 7527 7528
        } else {
            // start code prefix search
            for(; buf_index + 3 < buf_size; buf_index++){
                // This should always succeed in the first iteration.
                if(buf[buf_index] == 0 && buf[buf_index+1] == 0 && buf[buf_index+2] == 1)
                    break;
7529
            }
7530

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benoit committed
7531
            if(buf_index+3 >= buf_size) break;
7532

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benoit committed
7533 7534
            buf_index+=3;
        }
7535

7536 7537
        hx = h->thread_context[context_count];

7538
        ptr= ff_h264_decode_nal(hx, buf + buf_index, &dst_length, &consumed, next_avc - buf_index);
7539
        if (ptr==NULL || dst_length < 0){
7540 7541
            return -1;
        }
7542
        while(ptr[dst_length - 1] == 0 && dst_length > 0)
7543
            dst_length--;
7544
        bit_length= !dst_length ? 0 : (8*dst_length - ff_h264_decode_rbsp_trailing(h, ptr + dst_length - 1));
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michaelni committed
7545 7546

        if(s->avctx->debug&FF_DEBUG_STARTCODE){
7547
            av_log(h->s.avctx, AV_LOG_DEBUG, "NAL %d at %d/%d length %d\n", hx->nal_unit_type, buf_index, buf_size, dst_length);
michaelni's avatar
michaelni committed
7548
        }
7549

7550
        if (h->is_avc && (nalsize != consumed) && nalsize){
7551 7552 7553 7554 7555
            int i, debug_level = AV_LOG_DEBUG;
            for (i = consumed; i < nalsize; i++)
                if (buf[buf_index+i])
                    debug_level = AV_LOG_ERROR;
            av_log(h->s.avctx, debug_level, "AVC: Consumed only %d bytes instead of %d\n", consumed, nalsize);
7556
        }
7557

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michaelni committed
7558 7559
        buf_index += consumed;

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diego committed
7560
        if(  (s->hurry_up == 1 && h->nal_ref_idc  == 0) //FIXME do not discard SEI id
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michael committed
7561
           ||(avctx->skip_frame >= AVDISCARD_NONREF && h->nal_ref_idc  == 0))
michaelni's avatar
michaelni committed
7562
            continue;
7563

7564 7565 7566
      again:
        err = 0;
        switch(hx->nal_unit_type){
michaelni's avatar
michaelni committed
7567
        case NAL_IDR_SLICE:
7568 7569 7570 7571
            if (h->nal_unit_type != NAL_IDR_SLICE) {
                av_log(h->s.avctx, AV_LOG_ERROR, "Invalid mix of idr and non-idr slices");
                return -1;
            }
7572
            idr(h); //FIXME ensure we don't loose some frames if there is reordering
michaelni's avatar
michaelni committed
7573
        case NAL_SLICE:
7574 7575 7576 7577 7578 7579 7580 7581
            init_get_bits(&hx->s.gb, ptr, bit_length);
            hx->intra_gb_ptr=
            hx->inter_gb_ptr= &hx->s.gb;
            hx->s.data_partitioning = 0;

            if((err = decode_slice_header(hx, h)))
               break;

7582 7583 7584 7585 7586
            if (s->avctx->hwaccel && h->current_slice == 1) {
                if (s->avctx->hwaccel->start_frame(s->avctx, NULL, 0) < 0)
                    return -1;
            }

7587 7588 7589
            s->current_picture_ptr->key_frame |=
                    (hx->nal_unit_type == NAL_IDR_SLICE) ||
                    (h->sei_recovery_frame_cnt >= 0);
7590 7591
            if(hx->redundant_pic_count==0 && hx->s.hurry_up < 5
               && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
7592
               && (avctx->skip_frame < AVDISCARD_BIDIR  || hx->slice_type_nos!=FF_B_TYPE)
7593
               && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
7594
               && avctx->skip_frame < AVDISCARD_ALL){
7595 7596 7597 7598
                if(avctx->hwaccel) {
                    if (avctx->hwaccel->decode_slice(avctx, &buf[buf_index - consumed], consumed) < 0)
                        return -1;
                }else
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cehoyos committed
7599
                if(CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU){
7600
                    static const uint8_t start_code[] = {0x00, 0x00, 0x01};
7601 7602
                    ff_vdpau_add_data_chunk(s, start_code, sizeof(start_code));
                    ff_vdpau_add_data_chunk(s, &buf[buf_index - consumed], consumed );
7603
                }else
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cehoyos committed
7604
                    context_count++;
7605
            }
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michaelni committed
7606 7607
            break;
        case NAL_DPA:
7608 7609 7610
            init_get_bits(&hx->s.gb, ptr, bit_length);
            hx->intra_gb_ptr=
            hx->inter_gb_ptr= NULL;
7611 7612 7613 7614

            if ((err = decode_slice_header(hx, h)) < 0)
                break;

7615
            hx->s.data_partitioning = 1;
7616

michaelni's avatar
michaelni committed
7617 7618
            break;
        case NAL_DPB:
7619 7620
            init_get_bits(&hx->intra_gb, ptr, bit_length);
            hx->intra_gb_ptr= &hx->intra_gb;
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michaelni committed
7621 7622
            break;
        case NAL_DPC:
7623 7624
            init_get_bits(&hx->inter_gb, ptr, bit_length);
            hx->inter_gb_ptr= &hx->inter_gb;
michaelni's avatar
michaelni committed
7625

7626
            if(hx->redundant_pic_count==0 && hx->intra_gb_ptr && hx->s.data_partitioning
7627
               && s->context_initialized
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michael committed
7628
               && s->hurry_up < 5
7629
               && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
7630
               && (avctx->skip_frame < AVDISCARD_BIDIR  || hx->slice_type_nos!=FF_B_TYPE)
7631
               && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
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michael committed
7632
               && avctx->skip_frame < AVDISCARD_ALL)
7633
                context_count++;
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michaelni committed
7634 7635
            break;
        case NAL_SEI:
7636
            init_get_bits(&s->gb, ptr, bit_length);
7637
            ff_h264_decode_sei(h);
michaelni's avatar
michaelni committed
7638 7639 7640
            break;
        case NAL_SPS:
            init_get_bits(&s->gb, ptr, bit_length);
7641
            ff_h264_decode_seq_parameter_set(h);
7642

michaelni's avatar
michaelni committed
7643 7644
            if(s->flags& CODEC_FLAG_LOW_DELAY)
                s->low_delay=1;
7645

7646 7647
            if(avctx->has_b_frames < 2)
                avctx->has_b_frames= !s->low_delay;
michaelni's avatar
michaelni committed
7648 7649 7650
            break;
        case NAL_PPS:
            init_get_bits(&s->gb, ptr, bit_length);
7651

7652
            ff_h264_decode_picture_parameter_set(h, bit_length);
michaelni's avatar
michaelni committed
7653 7654

            break;
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lorenm committed
7655 7656 7657 7658 7659 7660
        case NAL_AUD:
        case NAL_END_SEQUENCE:
        case NAL_END_STREAM:
        case NAL_FILLER_DATA:
        case NAL_SPS_EXT:
        case NAL_AUXILIARY_SLICE:
michaelni's avatar
michaelni committed
7661
            break;
7662
        default:
7663
            av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n", h->nal_unit_type, bit_length);
7664 7665
        }

7666 7667 7668 7669 7670 7671 7672 7673 7674 7675
        if(context_count == h->max_contexts) {
            execute_decode_slices(h, context_count);
            context_count = 0;
        }

        if (err < 0)
            av_log(h->s.avctx, AV_LOG_ERROR, "decode_slice_header error\n");
        else if(err == 1) {
            /* Slice could not be decoded in parallel mode, copy down
             * NAL unit stuff to context 0 and restart. Note that
diego's avatar
diego committed
7676
             * rbsp_buffer is not transferred, but since we no longer
7677 7678 7679 7680 7681 7682 7683 7684 7685
             * run in parallel mode this should not be an issue. */
            h->nal_unit_type = hx->nal_unit_type;
            h->nal_ref_idc   = hx->nal_ref_idc;
            hx = h;
            goto again;
        }
    }
    if(context_count)
        execute_decode_slices(h, context_count);
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michaelni committed
7686 7687 7688 7689
    return buf_index;
}

/**
7690
 * returns the number of bytes consumed for building the current frame
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7691 7692
 */
static int get_consumed_bytes(MpegEncContext *s, int pos, int buf_size){
diego's avatar
diego committed
7693
        if(pos==0) pos=1; //avoid infinite loops (i doubt that is needed but ...)
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michaelni committed
7694 7695 7696 7697 7698
        if(pos+10>buf_size) pos=buf_size; // oops ;)

        return pos;
}

7699
static int decode_frame(AVCodecContext *avctx,
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7700
                             void *data, int *data_size,
7701
                             AVPacket *avpkt)
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michaelni committed
7702
{
7703 7704
    const uint8_t *buf = avpkt->data;
    int buf_size = avpkt->size;
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michaelni committed
7705 7706
    H264Context *h = avctx->priv_data;
    MpegEncContext *s = &h->s;
7707
    AVFrame *pict = data;
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michaelni committed
7708
    int buf_index;
7709

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michaelni committed
7710
    s->flags= avctx->flags;
7711
    s->flags2= avctx->flags2;
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7712

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7713
   /* end of stream, output what is still in the buffers */
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7714
    if (buf_size == 0) {
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7715 7716 7717 7718 7719 7720
        Picture *out;
        int i, out_idx;

//FIXME factorize this with the output code below
        out = h->delayed_pic[0];
        out_idx = 0;
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cehoyos committed
7721
        for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
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7722 7723 7724 7725 7726 7727 7728 7729 7730 7731 7732 7733 7734
            if(h->delayed_pic[i]->poc < out->poc){
                out = h->delayed_pic[i];
                out_idx = i;
            }

        for(i=out_idx; h->delayed_pic[i]; i++)
            h->delayed_pic[i] = h->delayed_pic[i+1];

        if(out){
            *data_size = sizeof(AVFrame);
            *pict= *(AVFrame*)out;
        }

michaelni's avatar
michaelni committed
7735 7736
        return 0;
    }
7737

7738 7739 7740 7741 7742 7743 7744 7745 7746 7747 7748 7749 7750 7751 7752 7753 7754 7755
    if(h->is_avc && !h->got_avcC) {
        int i, cnt, nalsize;
        unsigned char *p = avctx->extradata;
        if(avctx->extradata_size < 7) {
            av_log(avctx, AV_LOG_ERROR, "avcC too short\n");
            return -1;
        }
        if(*p != 1) {
            av_log(avctx, AV_LOG_ERROR, "Unknown avcC version %d\n", *p);
            return -1;
        }
        /* sps and pps in the avcC always have length coded with 2 bytes,
           so put a fake nal_length_size = 2 while parsing them */
        h->nal_length_size = 2;
        // Decode sps from avcC
        cnt = *(p+5) & 0x1f; // Number of sps
        p += 6;
        for (i = 0; i < cnt; i++) {
7756
            nalsize = AV_RB16(p) + 2;
7757
            if(decode_nal_units(h, p, nalsize) < 0) {
7758 7759 7760 7761
                av_log(avctx, AV_LOG_ERROR, "Decoding sps %d from avcC failed\n", i);
                return -1;
            }
            p += nalsize;
7762
        }
7763 7764 7765
        // Decode pps from avcC
        cnt = *(p++); // Number of pps
        for (i = 0; i < cnt; i++) {
7766
            nalsize = AV_RB16(p) + 2;
7767 7768 7769 7770 7771
            if(decode_nal_units(h, p, nalsize)  != nalsize) {
                av_log(avctx, AV_LOG_ERROR, "Decoding pps %d from avcC failed\n", i);
                return -1;
            }
            p += nalsize;
7772
        }
7773 7774 7775 7776 7777 7778
        // Now store right nal length size, that will be use to parse all other nals
        h->nal_length_size = ((*(((char*)(avctx->extradata))+4))&0x03)+1;
        // Do not reparse avcC
        h->got_avcC = 1;
    }

7779
    if(!h->got_avcC && !h->is_avc && s->avctx->extradata_size){
7780
        if(decode_nal_units(h, s->avctx->extradata, s->avctx->extradata_size) < 0)
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michaelni committed
7781
            return -1;
7782
        h->got_avcC = 1;
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michaelni committed
7783 7784 7785
    }

    buf_index=decode_nal_units(h, buf, buf_size);
7786
    if(buf_index < 0)
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michaelni committed
7787 7788
        return -1;

7789
    if(!(s->flags2 & CODEC_FLAG2_CHUNKS) && !s->current_picture_ptr){
7790
        if (avctx->skip_frame >= AVDISCARD_NONREF || s->hurry_up) return 0;
7791 7792 7793 7794
        av_log(avctx, AV_LOG_ERROR, "no frame!\n");
        return -1;
    }

7795 7796 7797 7798
    if(!(s->flags2 & CODEC_FLAG2_CHUNKS) || (s->mb_y >= s->mb_height && s->mb_height)){
        Picture *out = s->current_picture_ptr;
        Picture *cur = s->current_picture_ptr;
        int i, pics, cross_idr, out_of_order, out_idx;
7799

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michael committed
7800
        field_end(h);
7801

7802
        if (cur->field_poc[0]==INT_MAX || cur->field_poc[1]==INT_MAX) {
7803 7804 7805 7806
            /* Wait for second field. */
            *data_size = 0;

        } else {
7807
            cur->interlaced_frame = 0;
7808 7809 7810 7811
            cur->repeat_pict = 0;

            /* Signal interlacing information externally. */
            /* Prioritize picture timing SEI information over used decoding process if it exists. */
7812

7813 7814 7815
            if(h->sps.pic_struct_present_flag){
                switch (h->sei_pic_struct)
                {
7816 7817 7818 7819 7820 7821 7822 7823 7824 7825 7826 7827 7828 7829
                case SEI_PIC_STRUCT_FRAME:
                    break;
                case SEI_PIC_STRUCT_TOP_FIELD:
                case SEI_PIC_STRUCT_BOTTOM_FIELD:
                    cur->interlaced_frame = 1;
                    break;
                case SEI_PIC_STRUCT_TOP_BOTTOM:
                case SEI_PIC_STRUCT_BOTTOM_TOP:
                    if (FIELD_OR_MBAFF_PICTURE)
                        cur->interlaced_frame = 1;
                    else
                        // try to flag soft telecine progressive
                        cur->interlaced_frame = h->prev_interlaced_frame;
                    break;
7830 7831 7832 7833 7834 7835 7836 7837 7838 7839 7840 7841 7842 7843
                case SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
                case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
                    // Signal the possibility of telecined film externally (pic_struct 5,6)
                    // From these hints, let the applications decide if they apply deinterlacing.
                    cur->repeat_pict = 1;
                    break;
                case SEI_PIC_STRUCT_FRAME_DOUBLING:
                    // Force progressive here, as doubling interlaced frame is a bad idea.
                    cur->repeat_pict = 2;
                    break;
                case SEI_PIC_STRUCT_FRAME_TRIPLING:
                    cur->repeat_pict = 4;
                    break;
                }
7844 7845 7846

                if ((h->sei_ct_type & 3) && h->sei_pic_struct <= SEI_PIC_STRUCT_BOTTOM_TOP)
                    cur->interlaced_frame = (h->sei_ct_type & (1<<1)) != 0;
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            }else{
                /* Derive interlacing flag from used decoding process. */
                cur->interlaced_frame = FIELD_OR_MBAFF_PICTURE;
            }
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            h->prev_interlaced_frame = cur->interlaced_frame;
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            if (cur->field_poc[0] != cur->field_poc[1]){
                /* Derive top_field_first from field pocs. */
                cur->top_field_first = cur->field_poc[0] < cur->field_poc[1];
            }else{
                if(cur->interlaced_frame || h->sps.pic_struct_present_flag){
                    /* Use picture timing SEI information. Even if it is a information of a past frame, better than nothing. */
                    if(h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM
                      || h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM_TOP)
                        cur->top_field_first = 1;
                    else
                        cur->top_field_first = 0;
                }else{
                    /* Most likely progressive */
                    cur->top_field_first = 0;
                }
            }
7869

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7870
        //FIXME do something with unavailable reference frames
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7871

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            /* Sort B-frames into display order */
7873

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            if(h->sps.bitstream_restriction_flag
               && s->avctx->has_b_frames < h->sps.num_reorder_frames){
                s->avctx->has_b_frames = h->sps.num_reorder_frames;
                s->low_delay = 0;
            }
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            if(   s->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT
               && !h->sps.bitstream_restriction_flag){
                s->avctx->has_b_frames= MAX_DELAYED_PIC_COUNT;
                s->low_delay= 0;
            }

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            pics = 0;
            while(h->delayed_pic[pics]) pics++;
7888

7889
            assert(pics <= MAX_DELAYED_PIC_COUNT);
7890

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            h->delayed_pic[pics++] = cur;
            if(cur->reference == 0)
                cur->reference = DELAYED_PIC_REF;
7894

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            out = h->delayed_pic[0];
            out_idx = 0;
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            for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
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                if(h->delayed_pic[i]->poc < out->poc){
                    out = h->delayed_pic[i];
                    out_idx = i;
                }
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            cross_idr = !!h->delayed_pic[i] || h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset;
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            out_of_order = !cross_idr && out->poc < h->outputed_poc;
7905

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            if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames >= h->sps.num_reorder_frames)
                { }
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            else if((out_of_order && pics-1 == s->avctx->has_b_frames && s->avctx->has_b_frames < MAX_DELAYED_PIC_COUNT)
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               || (s->low_delay &&
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                ((!cross_idr && out->poc > h->outputed_poc + 2)
7911
                 || cur->pict_type == FF_B_TYPE)))
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            {
                s->low_delay = 0;
                s->avctx->has_b_frames++;
            }

            if(out_of_order || pics > s->avctx->has_b_frames){
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                out->reference &= ~DELAYED_PIC_REF;
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                for(i=out_idx; h->delayed_pic[i]; i++)
                    h->delayed_pic[i] = h->delayed_pic[i+1];
            }
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            if(!out_of_order && pics > s->avctx->has_b_frames){
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                *data_size = sizeof(AVFrame);
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                h->outputed_poc = out->poc;
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                *pict= *(AVFrame*)out;
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            }else{
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                av_log(avctx, AV_LOG_DEBUG, "no picture\n");
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            }
7930
        }
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    }

7933
    assert(pict->data[0] || !*data_size);
7934
    ff_print_debug_info(s, pict);
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//printf("out %d\n", (int)pict->data[0]);

    return get_consumed_bytes(s, buf_index, buf_size);
}
#if 0
static inline void fill_mb_avail(H264Context *h){
    MpegEncContext * const s = &h->s;
7942
    const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
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    if(s->mb_y){
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        h->mb_avail[0]= s->mb_x                 && h->slice_table[mb_xy - s->mb_stride - 1] == h->slice_num;
        h->mb_avail[1]=                            h->slice_table[mb_xy - s->mb_stride    ] == h->slice_num;
        h->mb_avail[2]= s->mb_x+1 < s->mb_width && h->slice_table[mb_xy - s->mb_stride + 1] == h->slice_num;
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    }else{
        h->mb_avail[0]=
        h->mb_avail[1]=
        h->mb_avail[2]= 0;
    }
    h->mb_avail[3]= s->mb_x && h->slice_table[mb_xy - 1] == h->slice_num;
    h->mb_avail[4]= 1; //FIXME move out
    h->mb_avail[5]= 0; //FIXME move out
}
#endif

7959
#ifdef TEST
7960
#undef printf
7961
#undef random
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#define COUNT 8000
#define SIZE (COUNT*40)
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int main(void){
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    int i;
    uint8_t temp[SIZE];
    PutBitContext pb;
    GetBitContext gb;
//    int int_temp[10000];
    DSPContext dsp;
    AVCodecContext avctx;
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    dsputil_init(&dsp, &avctx);

7975
    init_put_bits(&pb, temp, SIZE);
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    printf("testing unsigned exp golomb\n");
    for(i=0; i<COUNT; i++){
        START_TIMER
        set_ue_golomb(&pb, i);
        STOP_TIMER("set_ue_golomb");
    }
    flush_put_bits(&pb);
7983

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    init_get_bits(&gb, temp, 8*SIZE);
    for(i=0; i<COUNT; i++){
        int j, s;
7987

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7988
        s= show_bits(&gb, 24);
7989

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        START_TIMER
        j= get_ue_golomb(&gb);
        if(j != i){
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            printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
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//            return -1;
        }
        STOP_TIMER("get_ue_golomb");
    }
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    init_put_bits(&pb, temp, SIZE);
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    printf("testing signed exp golomb\n");
    for(i=0; i<COUNT; i++){
        START_TIMER
        set_se_golomb(&pb, i - COUNT/2);
        STOP_TIMER("set_se_golomb");
    }
    flush_put_bits(&pb);
8008

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    init_get_bits(&gb, temp, 8*SIZE);
    for(i=0; i<COUNT; i++){
        int j, s;
8012

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        s= show_bits(&gb, 24);
8014

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        START_TIMER
        j= get_se_golomb(&gb);
        if(j != i - COUNT/2){
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8018
            printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
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//            return -1;
        }
        STOP_TIMER("get_se_golomb");
    }

8024
#if 0
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8025
    printf("testing 4x4 (I)DCT\n");
8026

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    DCTELEM block[16];
    uint8_t src[16], ref[16];
    uint64_t error= 0, max_error=0;

    for(i=0; i<COUNT; i++){
        int j;
//        printf("%d %d %d\n", r1, r2, (r2-r1)*16);
        for(j=0; j<16; j++){
            ref[j]= random()%255;
            src[j]= random()%255;
        }

        h264_diff_dct_c(block, src, ref, 4);
8040

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        //normalize
        for(j=0; j<16; j++){
//            printf("%d ", block[j]);
            block[j]= block[j]*4;
            if(j&1) block[j]= (block[j]*4 + 2)/5;
            if(j&4) block[j]= (block[j]*4 + 2)/5;
        }
//        printf("\n");
8049

8050
        s->dsp.h264_idct_add(ref, block, 4);
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/*        for(j=0; j<16; j++){
            printf("%d ", ref[j]);
        }
        printf("\n");*/
8055

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        for(j=0; j<16; j++){
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8057
            int diff= FFABS(src[j] - ref[j]);
8058

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            error+= diff*diff;
            max_error= FFMAX(max_error, diff);
        }
    }
    printf("error=%f max_error=%d\n", ((float)error)/COUNT/16, (int)max_error );
    printf("testing quantizer\n");
    for(qp=0; qp<52; qp++){
        for(i=0; i<16; i++)
            src1_block[i]= src2_block[i]= random()%255;
8068

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    }
    printf("Testing NAL layer\n");
8071

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    uint8_t bitstream[COUNT];
    uint8_t nal[COUNT*2];
    H264Context h;
    memset(&h, 0, sizeof(H264Context));
8076

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    for(i=0; i<COUNT; i++){
        int zeros= i;
        int nal_length;
        int consumed;
        int out_length;
        uint8_t *out;
        int j;
8084

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        for(j=0; j<COUNT; j++){
            bitstream[j]= (random() % 255) + 1;
        }
8088

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        for(j=0; j<zeros; j++){
            int pos= random() % COUNT;
            while(bitstream[pos] == 0){
                pos++;
                pos %= COUNT;
            }
            bitstream[pos]=0;
        }
8097

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8098
        START_TIMER
8099

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        nal_length= encode_nal(&h, nal, bitstream, COUNT, COUNT*2);
        if(nal_length<0){
            printf("encoding failed\n");
            return -1;
        }
8105

8106
        out= ff_h264_decode_nal(&h, nal, &out_length, &consumed, nal_length);
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        STOP_TIMER("NAL")
8109

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        if(out_length != COUNT){
            printf("incorrect length %d %d\n", out_length, COUNT);
            return -1;
        }
8114

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        if(consumed != nal_length){
            printf("incorrect consumed length %d %d\n", nal_length, consumed);
            return -1;
        }
8119

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8120
        if(memcmp(bitstream, out, COUNT)){
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8121
            printf("mismatch\n");
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            return -1;
        }
    }
8125
#endif
8126

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8127
    printf("Testing RBSP\n");
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    return 0;
}
8132
#endif /* TEST */
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8135
av_cold void ff_h264_free_context(H264Context *h)
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8136
{
8137
    int i;
8138

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8139
    free_tables(h); //FIXME cleanup init stuff perhaps
8140 8141 8142 8143 8144 8145

    for(i = 0; i < MAX_SPS_COUNT; i++)
        av_freep(h->sps_buffers + i);

    for(i = 0; i < MAX_PPS_COUNT; i++)
        av_freep(h->pps_buffers + i);
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}

static av_cold int decode_end(AVCodecContext *avctx)
{
    H264Context *h = avctx->priv_data;
    MpegEncContext *s = &h->s;

    ff_h264_free_context(h);
8154

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    MPV_common_end(s);

//    memset(h, 0, sizeof(H264Context));
8158

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    return 0;
}


AVCodec h264_decoder = {
    "h264",
    CODEC_TYPE_VIDEO,
    CODEC_ID_H264,
    sizeof(H264Context),
    decode_init,
    NULL,
    decode_end,
    decode_frame,
8172
    /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 | CODEC_CAP_DELAY,
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8173
    .flush= flush_dpb,
8174
    .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
8175
    .pix_fmts= ff_hwaccel_pixfmt_list_420,
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};

8178
#if CONFIG_H264_VDPAU_DECODER
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AVCodec h264_vdpau_decoder = {
    "h264_vdpau",
    CODEC_TYPE_VIDEO,
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8182
    CODEC_ID_H264,
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    sizeof(H264Context),
    decode_init,
    NULL,
    decode_end,
    decode_frame,
    CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
    .flush= flush_dpb,
    .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)"),
};
#endif

8194
#if CONFIG_SVQ3_DECODER
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8195
#include "svq3.c"
8196
#endif