h264.c 314 KB
Newer Older
michaelni's avatar
michaelni committed
1 2 3 4
/*
 * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
 *
5 6 7
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
michaelni's avatar
michaelni committed
8 9
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
10
 * version 2.1 of the License, or (at your option) any later version.
michaelni's avatar
michaelni committed
11
 *
12
 * FFmpeg is distributed in the hope that it will be useful,
michaelni's avatar
michaelni committed
13 14 15 16 17
 * 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
18
 * License along with FFmpeg; if not, write to the Free Software
19
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
michaelni's avatar
michaelni committed
20
 */
21

michaelni's avatar
michaelni committed
22
/**
23
 * @file libavcodec/h264.c
michaelni's avatar
michaelni committed
24 25 26 27
 * H.264 / AVC / MPEG4 part10 codec.
 * @author Michael Niedermayer <michaelni@gmx.at>
 */

28
#include "internal.h"
michaelni's avatar
michaelni committed
29 30 31
#include "dsputil.h"
#include "avcodec.h"
#include "mpegvideo.h"
32
#include "h264.h"
michaelni's avatar
michaelni committed
33
#include "h264data.h"
34
#include "h264_parser.h"
michaelni's avatar
michaelni committed
35
#include "golomb.h"
36
#include "mathops.h"
37
#include "rectangle.h"
38
#include "vdpau_internal.h"
michaelni's avatar
michaelni committed
39

40
#include "cabac.h"
41
#if ARCH_X86
42
#include "x86/h264_i386.h"
43
#endif
44

45
//#undef NDEBUG
michaelni's avatar
michaelni committed
46 47
#include <assert.h>

48 49 50 51 52 53
/**
 * Value of Picture.reference when Picture is not a reference picture, but
 * is held for delayed output.
 */
#define DELAYED_PIC_REF 4

michaelni's avatar
michaelni committed
54
static VLC coeff_token_vlc[4];
cehoyos's avatar
cehoyos committed
55 56 57
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};

michaelni's avatar
michaelni committed
58
static VLC chroma_dc_coeff_token_vlc;
cehoyos's avatar
cehoyos committed
59 60
static VLC_TYPE chroma_dc_coeff_token_vlc_table[256][2];
static const int chroma_dc_coeff_token_vlc_table_size = 256;
michaelni's avatar
michaelni committed
61 62

static VLC total_zeros_vlc[15];
cehoyos's avatar
cehoyos committed
63 64 65
static VLC_TYPE total_zeros_vlc_tables[15][512][2];
static const int total_zeros_vlc_tables_size = 512;

michaelni's avatar
michaelni committed
66
static VLC chroma_dc_total_zeros_vlc[3];
cehoyos's avatar
cehoyos committed
67 68
static VLC_TYPE chroma_dc_total_zeros_vlc_tables[3][8][2];
static const int chroma_dc_total_zeros_vlc_tables_size = 8;
michaelni's avatar
michaelni committed
69 70

static VLC run_vlc[6];
cehoyos's avatar
cehoyos committed
71 72 73
static VLC_TYPE run_vlc_tables[6][8][2];
static const int run_vlc_tables_size = 8;

michaelni's avatar
michaelni committed
74
static VLC run7_vlc;
cehoyos's avatar
cehoyos committed
75 76
static VLC_TYPE run7_vlc_table[96][2];
static const int run7_vlc_table_size = 96;
michaelni's avatar
michaelni committed
77

michaelni's avatar
michaelni committed
78 79
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);
80
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);
81
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);
82
static Picture * remove_long(H264Context *h, int i, int ref_mask);
michaelni's avatar
michaelni committed
83

84
static av_always_inline uint32_t pack16to32(int a, int b){
michaelni's avatar
michaelni committed
85 86 87 88 89 90 91
#ifdef WORDS_BIGENDIAN
   return (b&0xFFFF) + (a<<16);
#else
   return (a&0xFFFF) + (b<<16);
#endif
}

92
static const uint8_t rem6[52]={
93 94 95
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,
};

96
static const uint8_t div6[52]={
97 98 99
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,
};

100
static const uint8_t left_block_options[4][8]={
101 102 103 104 105
    {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}
};
106

michael's avatar
michael committed
107 108 109
#define LEVEL_TAB_BITS 8
static int8_t cavlc_level_tab[7][1<<LEVEL_TAB_BITS][2];

lorenm's avatar
lorenm committed
110
static void fill_caches(H264Context *h, int mb_type, int for_deblock){
michaelni's avatar
michaelni committed
111
    MpegEncContext * const s = &h->s;
112
    const int mb_xy= h->mb_xy;
michaelni's avatar
michaelni committed
113 114
    int topleft_xy, top_xy, topright_xy, left_xy[2];
    int topleft_type, top_type, topright_type, left_type[2];
115
    const uint8_t * left_block;
lorenm's avatar
lorenm committed
116
    int topleft_partition= -1;
michaelni's avatar
michaelni committed
117 118
    int i;

119 120
    top_xy     = mb_xy  - (s->mb_stride << FIELD_PICTURE);

lorenm's avatar
lorenm committed
121
    //FIXME deblocking could skip the intra and nnz parts.
122
    if(for_deblock && (h->slice_num == 1 || h->slice_table[mb_xy] == h->slice_table[top_xy]) && !FRAME_MBAFF)
123 124
        return;

diego's avatar
diego committed
125 126
    /* Wow, what a mess, why didn't they simplify the interlacing & intra
     * stuff, I can't imagine that these complex rules are worth it. */
127

128 129 130
    topleft_xy = top_xy - 1;
    topright_xy= top_xy + 1;
    left_xy[1] = left_xy[0] = mb_xy-1;
131
    left_block = left_block_options[0];
lorenm's avatar
lorenm committed
132
    if(FRAME_MBAFF){
133 134 135 136
        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;
137 138 139 140 141
        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);
142
        const int bottom = (s->mb_y & 1);
143
        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);
144

145
        if (curr_mb_field_flag && (bottom || top_mb_field_flag)){
146 147
            top_xy -= s->mb_stride;
        }
148
        if (curr_mb_field_flag && (bottom || topleft_mb_field_flag)){
149
            topleft_xy -= s->mb_stride;
150
        } else if(bottom && !curr_mb_field_flag && left_mb_field_flag) {
lorenm's avatar
lorenm committed
151
            topleft_xy += s->mb_stride;
diego's avatar
diego committed
152
            // take top left mv from the middle of the mb, as opposed to all other modes which use the bottom right partition
lorenm's avatar
lorenm committed
153
            topleft_partition = 0;
154
        }
155
        if (curr_mb_field_flag && (bottom || topright_mb_field_flag)){
156 157
            topright_xy -= s->mb_stride;
        }
158
        if (left_mb_field_flag != curr_mb_field_flag) {
159
            left_xy[1] = left_xy[0] = pair_xy - 1;
160 161 162 163
            if (curr_mb_field_flag) {
                left_xy[1] += s->mb_stride;
                left_block = left_block_options[3];
            } else {
michael's avatar
michael committed
164
                left_block= left_block_options[2 - bottom];
165 166
            }
        }
michaelni's avatar
michaelni committed
167 168
    }

169 170 171
    h->top_mb_xy = top_xy;
    h->left_mb_xy[0] = left_xy[0];
    h->left_mb_xy[1] = left_xy[1];
michael's avatar
michael committed
172
    if(for_deblock){
lorenm's avatar
lorenm committed
173 174
        topleft_type = 0;
        topright_type = 0;
175 176 177
        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;
lorenm's avatar
lorenm committed
178

179
        if(MB_MBAFF && !IS_INTRA(mb_type)){
lorenm's avatar
lorenm committed
180
            int list;
181
            for(list=0; list<h->list_count; list++){
182 183 184
                //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.
lorenm's avatar
lorenm committed
185
                if(USES_LIST(mb_type,list)){
mru's avatar
mru committed
186
                    int8_t *ref = &s->current_picture.ref_index[list][h->mb2b8_xy[mb_xy]];
lorenm's avatar
lorenm committed
187
                    *(uint32_t*)&h->ref_cache[list][scan8[ 0]] =
188
                    *(uint32_t*)&h->ref_cache[list][scan8[ 2]] = (pack16to32(ref[0],ref[1])&0x00FF00FF)*0x0101;
lorenm's avatar
lorenm committed
189 190
                    ref += h->b8_stride;
                    *(uint32_t*)&h->ref_cache[list][scan8[ 8]] =
191
                    *(uint32_t*)&h->ref_cache[list][scan8[10]] = (pack16to32(ref[0],ref[1])&0x00FF00FF)*0x0101;
lorenm's avatar
lorenm committed
192 193 194
                }
            }
        }
michael's avatar
michael committed
195 196 197 198 199 200
    }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;
michaelni's avatar
michaelni committed
201 202

    if(IS_INTRA(mb_type)){
203
        int type_mask= h->pps.constrained_intra_pred ? IS_INTRA(-1) : -1;
204 205
        h->topleft_samples_available=
        h->top_samples_available=
michaelni's avatar
michaelni committed
206 207 208
        h->left_samples_available= 0xFFFF;
        h->topright_samples_available= 0xEEEA;

209
        if(!(top_type & type_mask)){
michaelni's avatar
michaelni committed
210 211 212 213
            h->topleft_samples_available= 0xB3FF;
            h->top_samples_available= 0x33FF;
            h->topright_samples_available= 0x26EA;
        }
214 215
        if(IS_INTERLACED(mb_type) != IS_INTERLACED(left_type[0])){
            if(IS_INTERLACED(mb_type)){
216
                if(!(left_type[0] & type_mask)){
217 218 219
                    h->topleft_samples_available&= 0xDFFF;
                    h->left_samples_available&= 0x5FFF;
                }
220
                if(!(left_type[1] & type_mask)){
221 222 223 224 225 226 227
                    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]);
228
                if(!((left_typei & type_mask) && (left_type[0] & type_mask))){
229 230 231 232 233
                    h->topleft_samples_available&= 0xDF5F;
                    h->left_samples_available&= 0x5F5F;
                }
            }
        }else{
234
            if(!(left_type[0] & type_mask)){
michaelni's avatar
michaelni committed
235 236 237 238
                h->topleft_samples_available&= 0xDF5F;
                h->left_samples_available&= 0x5F5F;
            }
        }
239

240
        if(!(topleft_type & type_mask))
michaelni's avatar
michaelni committed
241
            h->topleft_samples_available&= 0x7FFF;
242

243
        if(!(topright_type & type_mask))
michaelni's avatar
michaelni committed
244
            h->topright_samples_available&= 0xFBFF;
245

michaelni's avatar
michaelni committed
246 247 248 249 250 251 252 253
        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;
254
                if(!(top_type & type_mask))
michaelni's avatar
michaelni committed
255
                    pred= -1;
256 257
                else{
                    pred= 2;
michaelni's avatar
michaelni committed
258 259 260 261 262 263 264 265 266 267 268 269
                }
                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;
270
                    if(!(left_type[i] & type_mask))
michaelni's avatar
michaelni committed
271
                        pred= -1;
272 273
                    else{
                        pred= 2;
michaelni's avatar
michaelni committed
274 275 276 277 278 279 280
                    }
                    h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]=
                    h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= pred;
                }
            }
        }
    }
281
    }
282 283


michaelni's avatar
michaelni committed
284
/*
285 286 287 288 289 290
0 . T T. T T T T
1 L . .L . . . .
2 L . .L . . . .
3 . T TL . . . .
4 L . .L . . . .
5 L . .. . . . .
michaelni's avatar
michaelni committed
291
*/
diego's avatar
diego committed
292
//FIXME constraint_intra_pred & partitioning & nnz (let us hope this is just a typo in the spec)
michaelni's avatar
michaelni committed
293
    if(top_type){
294 295 296
        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];
297
        h->non_zero_count_cache[7+8*0]= h->non_zero_count[top_xy][3];
298

299
        h->non_zero_count_cache[1+8*0]= h->non_zero_count[top_xy][9];
300
        h->non_zero_count_cache[2+8*0]= h->non_zero_count[top_xy][8];
301

302
        h->non_zero_count_cache[1+8*3]= h->non_zero_count[top_xy][12];
303
        h->non_zero_count_cache[2+8*3]= h->non_zero_count[top_xy][11];
304

michaelni's avatar
michaelni committed
305
    }else{
306
        h->non_zero_count_cache[4+8*0]=
michaelni's avatar
michaelni committed
307 308 309
        h->non_zero_count_cache[5+8*0]=
        h->non_zero_count_cache[6+8*0]=
        h->non_zero_count_cache[7+8*0]=
310

michaelni's avatar
michaelni committed
311 312
        h->non_zero_count_cache[1+8*0]=
        h->non_zero_count_cache[2+8*0]=
313

michaelni's avatar
michaelni committed
314
        h->non_zero_count_cache[1+8*3]=
michael's avatar
michael committed
315
        h->non_zero_count_cache[2+8*3]= h->pps.cabac && !IS_INTRA(mb_type) ? 0 : 64;
316

michaelni's avatar
michaelni committed
317
    }
318

319 320 321 322 323 324 325
    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{
326 327 328
            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]=
329
            h->non_zero_count_cache[0+8*4 +   8*i]= h->pps.cabac && !IS_INTRA(mb_type) ? 0 : 64;
330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354
        }
    }

    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;
355
        }
michaelni's avatar
michaelni committed
356
    }
357

michaelni's avatar
michaelni committed
358
#if 1
359
    if(IS_INTER(mb_type) || IS_DIRECT(mb_type)){
michaelni's avatar
michaelni committed
360
        int list;
361
        for(list=0; list<h->list_count; list++){
362
            if(!USES_LIST(mb_type, list) && !IS_DIRECT(mb_type) && !h->deblocking_filter){
michaelni's avatar
michaelni committed
363 364 365 366 367
                /*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;
                }*/
368
                continue;
michaelni's avatar
michaelni committed
369 370
            }
            h->mv_cache_clean[list]= 0;
371

372
            if(USES_LIST(top_type, list)){
michaelni's avatar
michaelni committed
373 374 375 376 377 378 379 380 381 382 383
                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{
384 385 386
                *(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]=
michaelni's avatar
michaelni committed
387 388 389 390
                *(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;
            }

lorenm's avatar
lorenm committed
391 392 393 394 395 396 397 398 399 400 401 402 403 404 405
            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;
                }
michaelni's avatar
michaelni committed
406 407
            }

408
            if(for_deblock || ((IS_DIRECT(mb_type) && !h->direct_spatial_mv_pred) && !FRAME_MBAFF))
michael's avatar
michael committed
409 410
                continue;

411
            if(USES_LIST(topleft_type, list)){
lorenm's avatar
lorenm committed
412 413
                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);
414 415 416 417 418 419
                *(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;
            }
420

421
            if(USES_LIST(topright_type, list)){
422 423 424 425 426 427 428 429 430
                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;
            }

lorenm's avatar
lorenm committed
431
            if((IS_SKIP(mb_type) || IS_DIRECT(mb_type)) && !FRAME_MBAFF)
lorenm's avatar
lorenm committed
432
                continue;
433 434 435

            h->ref_cache[list][scan8[5 ]+1] =
            h->ref_cache[list][scan8[7 ]+1] =
436
            h->ref_cache[list][scan8[13]+1] =  //FIXME remove past 3 (init somewhere else)
437
            h->ref_cache[list][scan8[4 ]] =
michaelni's avatar
michaelni committed
438 439 440
            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]=
441
            *(uint32_t*)h->mv_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewhere else)
michaelni's avatar
michaelni committed
442 443
            *(uint32_t*)h->mv_cache [list][scan8[4 ]]=
            *(uint32_t*)h->mv_cache [list][scan8[12]]= 0;
444 445 446

            if( h->pps.cabac ) {
                /* XXX beurk, Load mvd */
447
                if(USES_LIST(top_type, list)){
448 449 450 451 452 453
                    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{
454 455 456
                    *(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]=
457 458
                    *(uint32_t*)h->mvd_cache [list][scan8[0] + 3 - 1*8]= 0;
                }
459
                if(USES_LIST(left_type[0], list)){
460 461 462 463 464 465 466
                    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;
                }
467
                if(USES_LIST(left_type[1], list)){
468 469 470 471 472 473 474 475 476
                    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]=
477
                *(uint32_t*)h->mvd_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewhere else)
478 479
                *(uint32_t*)h->mvd_cache [list][scan8[4 ]]=
                *(uint32_t*)h->mvd_cache [list][scan8[12]]= 0;
480

481
                if(h->slice_type_nos == FF_B_TYPE){
482 483 484 485 486 487 488 489 490 491 492
                    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;
                    }
493

lorenm's avatar
lorenm committed
494 495 496 497 498 499 500 501
                    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]))
502
                        h->direct_cache[scan8[0] - 1 + 2*8]= 1;
lorenm's avatar
lorenm committed
503 504 505
                    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
506
                        h->direct_cache[scan8[0] - 1 + 2*8]= 0;
lorenm's avatar
lorenm committed
507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536
                }
            }

            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;\
537
                    }
lorenm's avatar
lorenm committed
538 539
                    MAP_MVS
#undef MAP_F2F
540
                }
541
            }
michaelni's avatar
michaelni committed
542 543 544
        }
    }
#endif
lorenm's avatar
lorenm committed
545 546

    h->neighbor_transform_size= !!IS_8x8DCT(top_type) + !!IS_8x8DCT(left_type[0]);
michaelni's avatar
michaelni committed
547 548 549
}

static inline void write_back_intra_pred_mode(H264Context *h){
550
    const int mb_xy= h->mb_xy;
michaelni's avatar
michaelni committed
551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568

    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;
569

michaelni's avatar
michaelni committed
570 571 572 573
    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){
574
                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);
michaelni's avatar
michaelni committed
575 576 577 578 579 580
                return -1;
            } else if(status){
                h->intra4x4_pred_mode_cache[scan8[0] + i]= status;
            }
        }
    }
581

582 583
    if((h->left_samples_available&0x8888)!=0x8888){
        static const int mask[4]={0x8000,0x2000,0x80,0x20};
michaelni's avatar
michaelni committed
584
        for(i=0; i<4; i++){
585
            if(!(h->left_samples_available&mask[i])){
michael's avatar
michael committed
586 587 588 589 590 591 592
                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;
                }
593
            }
michaelni's avatar
michaelni committed
594 595 596 597 598 599 600 601 602 603 604 605 606
        }
    }

    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};
607

michael's avatar
michael committed
608
    if(mode > 6U) {
michael's avatar
michael committed
609
        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);
michael's avatar
michael committed
610
        return -1;
michael's avatar
michael committed
611
    }
612

michaelni's avatar
michaelni committed
613 614 615
    if(!(h->top_samples_available&0x8000)){
        mode= top[ mode ];
        if(mode<0){
616
            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);
michaelni's avatar
michaelni committed
617 618 619
            return -1;
        }
    }
620

621
    if((h->left_samples_available&0x8080) != 0x8080){
michaelni's avatar
michaelni committed
622
        mode= left[ mode ];
623 624 625
        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);
        }
michaelni's avatar
michaelni committed
626
        if(mode<0){
627
            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);
michaelni's avatar
michaelni committed
628
            return -1;
629
        }
michaelni's avatar
michaelni committed
630 631 632 633 634 635 636 637 638 639 640 641 642 643
    }

    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);

mbardiaux's avatar
mbardiaux committed
644
    tprintf(h->s.avctx, "mode:%d %d min:%d\n", left ,top, min);
michaelni's avatar
michaelni committed
645 646 647 648 649 650

    if(min<0) return DC_PRED;
    else      return min;
}

static inline void write_back_non_zero_count(H264Context *h){
651
    const int mb_xy= h->mb_xy;
michaelni's avatar
michaelni committed
652

653 654 655
    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];
656
    h->non_zero_count[mb_xy][3]= h->non_zero_count_cache[7+8*4];
657 658 659
    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];
660

661
    h->non_zero_count[mb_xy][9]= h->non_zero_count_cache[1+8*2];
662
    h->non_zero_count[mb_xy][8]= h->non_zero_count_cache[2+8*2];
663
    h->non_zero_count[mb_xy][7]= h->non_zero_count_cache[2+8*1];
664

665
    h->non_zero_count[mb_xy][12]=h->non_zero_count_cache[1+8*5];
666
    h->non_zero_count[mb_xy][11]=h->non_zero_count_cache[2+8*5];
667
    h->non_zero_count[mb_xy][10]=h->non_zero_count_cache[2+8*4];
michaelni's avatar
michaelni committed
668 669 670
}

/**
diego's avatar
diego committed
671
 * gets the predicted number of non-zero coefficients.
michaelni's avatar
michaelni committed
672 673 674 675 676 677 678
 * @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;
679

michaelni's avatar
michaelni committed
680 681
    if(i<64) i= (i+1)>>1;

mbardiaux's avatar
mbardiaux committed
682
    tprintf(h->s.avctx, "pred_nnz L%X T%X n%d s%d P%X\n", left, top, n, scan8[n], i&31);
michaelni's avatar
michaelni committed
683 684 685 686

    return i&31;
}

687 688
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 ];
mbardiaux's avatar
mbardiaux committed
689
    MpegEncContext *s = &h->s;
690

lorenm's avatar
lorenm committed
691 692 693
    /* 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){
mru's avatar
mru committed
694
        const uint32_t *mb_types = s->current_picture_ptr->mb_type;
lorenm's avatar
lorenm committed
695 696 697 698 699 700 701 702 703 704 705
        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];\
lorenm's avatar
lorenm committed
706
                if(!USES_LIST(mb_type,list))\
lorenm's avatar
lorenm committed
707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725
                    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){
diego's avatar
diego committed
726
                // left shift will turn LIST_NOT_USED into PART_NOT_AVAILABLE, but that's OK.
lorenm's avatar
lorenm committed
727
                SET_DIAG_MV(/2, <<1, s->mb_x*4-1, (s->mb_y&~1)*4 - 1 + ((i-scan8[0])>>3)*2);
lorenm's avatar
lorenm committed
728 729 730 731 732
            }
        }
#undef SET_DIAG_MV
    }

733 734 735 736
    if(topright_ref != PART_NOT_AVAILABLE){
        *C= h->mv_cache[list][ i - 8 + part_width ];
        return topright_ref;
    }else{
mbardiaux's avatar
mbardiaux committed
737
        tprintf(s->avctx, "topright MV not available\n");
738

739 740 741 742 743
        *C= h->mv_cache[list][ i - 8 - 1 ];
        return h->ref_cache[list][ i - 8 - 1 ];
    }
}

michaelni's avatar
michaelni committed
744 745 746 747 748 749 750 751 752 753 754 755 756
/**
 * 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 ];
757 758 759
    const int16_t * C;
    int diagonal_ref, match_count;

michaelni's avatar
michaelni committed
760
    assert(part_width==1 || part_width==2 || part_width==4);
761

michaelni's avatar
michaelni committed
762
/* mv_cache
763
  B . . A T T T T
michaelni's avatar
michaelni committed
764 765 766 767 768
  U . . L . . , .
  U . . L . . . .
  U . . L . . , .
  . . . L . . . .
*/
769 770 771

    diagonal_ref= fetch_diagonal_mv(h, &C, index8, list, part_width);
    match_count= (diagonal_ref==ref) + (top_ref==ref) + (left_ref==ref);
mbardiaux's avatar
mbardiaux committed
772
    tprintf(h->s.avctx, "pred_motion match_count=%d\n", match_count);
773 774 775 776 777 778
    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];
779
            *my= A[1];
780 781
        }else if(top_ref==ref){
            *mx= B[0];
782
            *my= B[1];
michaelni's avatar
michaelni committed
783
        }else{
784
            *mx= C[0];
785
            *my= C[1];
michaelni's avatar
michaelni committed
786 787
        }
    }else{
788
        if(top_ref == PART_NOT_AVAILABLE && diagonal_ref == PART_NOT_AVAILABLE && left_ref != PART_NOT_AVAILABLE){
michaelni's avatar
michaelni committed
789
            *mx= A[0];
790
            *my= A[1];
michaelni's avatar
michaelni committed
791
        }else{
792 793
            *mx= mid_pred(A[0], B[0], C[0]);
            *my= mid_pred(A[1], B[1], C[1]);
michaelni's avatar
michaelni committed
794 795
        }
    }
796

mbardiaux's avatar
mbardiaux committed
797
    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);
michaelni's avatar
michaelni committed
798 799 800 801 802 803 804 805 806 807 808 809 810
}

/**
 * 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 ];

mbardiaux's avatar
mbardiaux committed
811
        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);
812

michaelni's avatar
michaelni committed
813 814 815 816 817 818 819 820
        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 ];
821

mbardiaux's avatar
mbardiaux committed
822
        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);
michaelni's avatar
michaelni committed
823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844

        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 ];
845

mbardiaux's avatar
mbardiaux committed
846
        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);
michaelni's avatar
michaelni committed
847 848 849 850 851 852 853

        if(left_ref == ref){
            *mx= A[0];
            *my= A[1];
            return;
        }
    }else{
854 855 856 857
        const int16_t * C;
        int diagonal_ref;

        diagonal_ref= fetch_diagonal_mv(h, &C, scan8[4], list, 2);
858

mbardiaux's avatar
mbardiaux committed
859
        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);
michaelni's avatar
michaelni committed
860

861
        if(diagonal_ref == ref){
michaelni's avatar
michaelni committed
862 863 864 865 866 867 868 869 870 871 872 873 874 875
            *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 ];

mbardiaux's avatar
mbardiaux committed
876
    tprintf(h->s.avctx, "pred_pskip: (%d) (%d) at %2d %2d\n", top_ref, left_ref, h->s.mb_x, h->s.mb_y);
michaelni's avatar
michaelni committed
877 878

    if(top_ref == PART_NOT_AVAILABLE || left_ref == PART_NOT_AVAILABLE
michael's avatar
michael committed
879 880
       || !( top_ref | *(uint32_t*)h->mv_cache[0][ scan8[0] - 8 ])
       || !(left_ref | *(uint32_t*)h->mv_cache[0][ scan8[0] - 1 ])){
881

michaelni's avatar
michaelni committed
882 883 884
        *mx = *my = 0;
        return;
    }
885

michaelni's avatar
michaelni committed
886 887 888 889 890
    pred_motion(h, 0, 4, 0, 0, mx, my);

    return;
}

891 892 893 894 895 896 897 898 899 900 901 902
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);
    }
}

903
static inline void direct_dist_scale_factor(H264Context * const h){
904 905
    MpegEncContext * const s = &h->s;
    const int poc = h->s.current_picture_ptr->field_poc[ s->picture_structure == PICT_BOTTOM_FIELD ];
906
    const int poc1 = h->ref_list[1][0].poc;
907 908 909 910 911 912
    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);
913
    }
914 915 916

    for(i=0; i<h->ref_count[0]; i++){
        h->dist_scale_factor[i] = get_scale_factor(h, poc, poc1, i);
lorenm's avatar
lorenm committed
917
    }
918
}
919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952

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;
                }
            }
        }
    }
}

953 954 955 956
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;
diego's avatar
diego committed
957
    int list, j, field;
958 959
    int sidx= (s->picture_structure&1)^1;
    int ref1sidx= (ref1->reference&1)^1;
michael's avatar
michael committed
960

961
    for(list=0; list<2; list++){
962
        cur->ref_count[sidx][list] = h->ref_count[list];
963
        for(j=0; j<h->ref_count[list]; j++)
964
            cur->ref_poc[sidx][list][j] = 4*h->ref_list[list][j].frame_num + (h->ref_list[list][j].reference&3);
965
    }
michael's avatar
michael committed
966

967
    if(s->picture_structure == PICT_FRAME){
968 969
        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]));
970
    }
michael's avatar
michael committed
971

972
    cur->mbaff= FRAME_MBAFF;
michael's avatar
michael committed
973

974
    if(cur->pict_type != FF_B_TYPE || h->direct_spatial_mv_pred)
975
        return;
michael's avatar
michael committed
976

977
    for(list=0; list<2; list++){
978 979 980
        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);
981 982
    }
}
983 984 985

static inline void pred_direct_motion(H264Context * const h, int *mb_type){
    MpegEncContext * const s = &h->s;
986 987 988 989 990 991
    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;
992
    const int is_b8x8 = IS_8X8(*mb_type);
993
    unsigned int sub_mb_type;
994 995
    int i8, i4;

lorenm's avatar
lorenm committed
996
#define MB_TYPE_16x16_OR_INTRA (MB_TYPE_16x16|MB_TYPE_INTRA4x4|MB_TYPE_INTRA16x16|MB_TYPE_INTRA_PCM)
997 998

    if(IS_INTERLACED(h->ref_list[1][0].mb_type[mb_xy])){ // AFL/AFR/FR/FL -> AFL/FL
999
        if(!IS_INTERLACED(*mb_type)){                    //     AFR/FR    -> AFL/FL
michael's avatar
michael committed
1000 1001 1002 1003 1004
            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;
1005
        }else if(!(s->picture_structure & h->ref_list[1][0].reference) && !h->ref_list[1][0].mbaff){// FL -> FL & differ parity
1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030
            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];
michael's avatar
michael committed
1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042
            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;
            }
1043
        }
1044 1045
    }

michael's avatar
michael committed
1046 1047 1048 1049
    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]];
michael's avatar
michael committed
1050 1051 1052 1053 1054 1055 1056
    if(!b8_stride){
        if(s->mb_y&1){
            l1ref0 += h->b8_stride;
            l1ref1 += h->b8_stride;
            l1mv0  +=  2*b4_stride;
            l1mv1  +=  2*b4_stride;
        }
1057
    }
1058

1059 1060 1061 1062 1063
    if(h->direct_spatial_mv_pred){
        int ref[2];
        int mv[2][2];
        int list;

lorenm's avatar
lorenm committed
1064 1065
        /* FIXME interlacing + spatial direct uses wrong colocated block positions */

1066 1067 1068 1069 1070
        /* 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];
1071
            if(refc == PART_NOT_AVAILABLE)
1072
                refc = h->ref_cache[list][scan8[0] - 8 - 1];
1073
            ref[list] = FFMIN3((unsigned)refa, (unsigned)refb, (unsigned)refc);
1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091
            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){
lorenm's avatar
lorenm committed
1092 1093 1094
            if(!is_b8x8)
                *mb_type &= ~MB_TYPE_L1;
            sub_mb_type &= ~MB_TYPE_L1;
1095
        }else if(ref[0] < 0){
lorenm's avatar
lorenm committed
1096 1097 1098
            if(!is_b8x8)
                *mb_type &= ~MB_TYPE_L0;
            sub_mb_type &= ~MB_TYPE_L0;
1099 1100
        }

1101
        if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])){
lorenm's avatar
lorenm committed
1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114
            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);
1115
                if(!IS_INTRA(mb_type_col[y8])
lorenm's avatar
lorenm committed
1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129
                   && (   (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)){
michael's avatar
michael committed
1130 1131
            int a=0, b=0;

1132 1133
            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);
1134
            if(!IS_INTRA(mb_type_col[0])
diego's avatar
diego committed
1135 1136
               && (   (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
mru's avatar
mru committed
1137
                       && (h->x264_build>33 || !h->x264_build)))){
1138
                if(ref[0] > 0)
michael's avatar
michael committed
1139
                    a= pack16to32(mv[0][0],mv[0][1]);
1140
                if(ref[1] > 0)
michael's avatar
michael committed
1141
                    b= pack16to32(mv[1][0],mv[1][1]);
1142
            }else{
michael's avatar
michael committed
1143 1144
                a= pack16to32(mv[0][0],mv[0][1]);
                b= pack16to32(mv[1][0],mv[1][1]);
1145
            }
michael's avatar
michael committed
1146 1147
            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);
1148 1149 1150 1151
        }else{
            for(i8=0; i8<4; i8++){
                const int x8 = i8&1;
                const int y8 = i8>>1;
1152

1153 1154 1155
                if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
                    continue;
                h->sub_mb_type[i8] = sub_mb_type;
1156

1157 1158
                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);
1159 1160
                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);
1161

1162
                /* col_zero_flag */
1163 1164
                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
mru's avatar
mru committed
1165
                                                  && (h->x264_build>33 || !h->x264_build)))){
1166
                    const int16_t (*l1mv)[2]= l1ref0[x8 + y8*b8_stride] == 0 ? l1mv0 : l1mv1;
1167
                    if(IS_SUB_8X8(sub_mb_type)){
1168
                        const int16_t *mv_col = l1mv[x8*3 + y8*3*b4_stride];
diego's avatar
diego committed
1169
                        if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){
1170 1171 1172 1173 1174 1175
                            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
1176
                    for(i4=0; i4<4; i4++){
1177
                        const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*b4_stride];
diego's avatar
diego committed
1178
                        if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){
1179 1180 1181 1182 1183 1184 1185 1186 1187 1188
                            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 */
lorenm's avatar
lorenm committed
1189 1190
        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;
1191
        int ref_offset= 0;
lorenm's avatar
lorenm committed
1192

michael's avatar
michael committed
1193
        if(FRAME_MBAFF && IS_INTERLACED(*mb_type)){
1194 1195 1196
            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];
michael's avatar
michael committed
1197
        }
1198
        if(h->ref_list[1][0].mbaff && IS_INTERLACED(mb_type_col[0]))
1199
            ref_offset += 16;
1200

michael's avatar
michael committed
1201 1202
        if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])){
            /* FIXME assumes direct_8x8_inference == 1 */
michael's avatar
michael committed
1203
            int y_shift  = 2*!IS_INTERLACED(*mb_type);
lorenm's avatar
lorenm committed
1204

michael's avatar
michael committed
1205 1206 1207 1208 1209
            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;
lorenm's avatar
lorenm committed
1210

michael's avatar
michael committed
1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224
                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)
1225
                    ref0 = map_col_to_list0[0][ref0 + ref_offset];
michael's avatar
michael committed
1226
                else{
1227
                    ref0 = map_col_to_list0[1][l1ref1[x8 + y8*b8_stride] + ref_offset];
michael's avatar
michael committed
1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239
                    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);
lorenm's avatar
lorenm committed
1240 1241
                }
            }
michael's avatar
michael committed
1242 1243
            return;
        }
lorenm's avatar
lorenm committed
1244 1245 1246

        /* one-to-one mv scaling */

1247
        if(IS_16X16(*mb_type)){
1248 1249
            int ref, mv0, mv1;

1250
            fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, 0, 1);
1251
            if(IS_INTRA(mb_type_col[0])){
1252
                ref=mv0=mv1=0;
1253
            }else{
1254 1255
                const int ref0 = l1ref0[0] >= 0 ? map_col_to_list0[0][l1ref0[0] + ref_offset]
                                                : map_col_to_list0[1][l1ref1[0] + ref_offset];
lorenm's avatar
lorenm committed
1256
                const int scale = dist_scale_factor[ref0];
1257
                const int16_t *mv_col = l1ref0[0] >= 0 ? l1mv0[0] : l1mv1[0];
1258
                int mv_l0[2];
lorenm's avatar
lorenm committed
1259 1260
                mv_l0[0] = (scale * mv_col[0] + 128) >> 8;
                mv_l0[1] = (scale * mv_col[1] + 128) >> 8;
1261 1262 1263
                ref= ref0;
                mv0= pack16to32(mv_l0[0],mv_l0[1]);
                mv1= pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]);
1264
            }
1265 1266 1267
            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);
1268 1269 1270 1271
        }else{
            for(i8=0; i8<4; i8++){
                const int x8 = i8&1;
                const int y8 = i8>>1;
lorenm's avatar
lorenm committed
1272
                int ref0, scale;
mru's avatar
mru committed
1273
                const int16_t (*l1mv)[2]= l1mv0;
1274

1275 1276 1277
                if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
                    continue;
                h->sub_mb_type[i8] = sub_mb_type;
lorenm's avatar
lorenm committed
1278
                fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1);
1279
                if(IS_INTRA(mb_type_col[0])){
1280 1281 1282 1283 1284
                    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;
                }
1285

1286
                ref0 = l1ref0[x8 + y8*b8_stride] + ref_offset;
1287
                if(ref0 >= 0)
lorenm's avatar
lorenm committed
1288
                    ref0 = map_col_to_list0[0][ref0];
1289
                else{
1290
                    ref0 = map_col_to_list0[1][l1ref1[x8 + y8*b8_stride] + ref_offset];
1291 1292
                    l1mv= l1mv1;
                }
lorenm's avatar
lorenm committed
1293
                scale = dist_scale_factor[ref0];
1294

1295
                fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref0, 1);
1296
                if(IS_SUB_8X8(sub_mb_type)){
1297
                    const int16_t *mv_col = l1mv[x8*3 + y8*3*b4_stride];
lorenm's avatar
lorenm committed
1298 1299
                    int mx = (scale * mv_col[0] + 128) >> 8;
                    int my = (scale * mv_col[1] + 128) >> 8;
1300 1301 1302
                    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
1303
                for(i4=0; i4<4; i4++){
1304
                    const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*b4_stride];
1305
                    int16_t *mv_l0 = h->mv_cache[0][scan8[i8*4+i4]];
lorenm's avatar
lorenm committed
1306 1307
                    mv_l0[0] = (scale * mv_col[0] + 128) >> 8;
                    mv_l0[1] = (scale * mv_col[1] + 128) >> 8;
1308 1309 1310 1311 1312 1313 1314 1315
                    *(uint32_t*)h->mv_cache[1][scan8[i8*4+i4]] =
                        pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]);
                }
            }
        }
    }
}

michaelni's avatar
michaelni committed
1316 1317 1318 1319 1320 1321
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;

1322 1323 1324
    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);

1325
    for(list=0; list<h->list_count; list++){
michaelni's avatar
michaelni committed
1326
        int y;
1327
        if(!USES_LIST(mb_type, list))
1328
            continue;
1329

michaelni's avatar
michaelni committed
1330 1331 1332 1333
        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];
        }
1334
        if( h->pps.cabac ) {
1335 1336 1337
            if(IS_SKIP(mb_type))
                fill_rectangle(h->mvd_table[list][b_xy], 4, 4, h->b_stride, 0, 4);
            else
1338 1339 1340 1341 1342
            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];
            }
        }
1343 1344

        {
mru's avatar
mru committed
1345
            int8_t *ref_index = &s->current_picture.ref_index[list][b8_xy];
1346 1347 1348 1349
            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]];
michaelni's avatar
michaelni committed
1350 1351
        }
    }
1352

1353
    if(h->slice_type_nos == FF_B_TYPE && h->pps.cabac){
1354
        if(IS_8X8(mb_type)){
1355 1356 1357 1358
            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;
1359 1360
        }
    }
michaelni's avatar
michaelni committed
1361 1362
}

1363
const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length){
michaelni's avatar
michaelni committed
1364 1365
    int i, si, di;
    uint8_t *dst;
1366
    int bufidx;
michaelni's avatar
michaelni committed
1367

1368
//    src[0]&0x80;                //forbidden bit
michaelni's avatar
michaelni committed
1369 1370 1371 1372
    h->nal_ref_idc= src[0]>>5;
    h->nal_unit_type= src[0]&0x1F;

    src++; length--;
1373
#if 0
michaelni's avatar
michaelni committed
1374 1375 1376
    for(i=0; i<length; i++)
        printf("%2X ", src[i]);
#endif
1377

1378 1379
#if HAVE_FAST_UNALIGNED
# if HAVE_FAST_64BIT
1380 1381
#   define RS 7
    for(i=0; i+1<length; i+=9){
cehoyos's avatar
cehoyos committed
1382
        if(!((~*(const uint64_t*)(src+i) & (*(const uint64_t*)(src+i) - 0x0100010001000101ULL)) & 0x8000800080008080ULL))
1383 1384 1385
# else
#   define RS 3
    for(i=0; i+1<length; i+=5){
cehoyos's avatar
cehoyos committed
1386
        if(!((~*(const uint32_t*)(src+i) & (*(const uint32_t*)(src+i) - 0x01000101U)) & 0x80008080U))
1387 1388 1389 1390 1391 1392
# endif
            continue;
        if(i>0 && !src[i]) i--;
        while(src[i]) i++;
#else
#   define RS 0
michaelni's avatar
michaelni committed
1393 1394 1395
    for(i=0; i+1<length; i+=2){
        if(src[i]) continue;
        if(i>0 && src[i-1]==0) i--;
1396
#endif
michaelni's avatar
michaelni committed
1397 1398 1399 1400 1401 1402 1403
        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;
        }
1404
        i-= RS;
michaelni's avatar
michaelni committed
1405 1406 1407 1408 1409
    }

    if(i>=length-1){ //no escaped 0
        *dst_length= length;
        *consumed= length+1; //+1 for the header
1410
        return src;
michaelni's avatar
michaelni committed
1411 1412
    }

1413
    bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0; // use second escape buffer for inter data
1414
    h->rbsp_buffer[bufidx]= av_fast_realloc(h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length+FF_INPUT_BUFFER_PADDING_SIZE);
1415
    dst= h->rbsp_buffer[bufidx];
michaelni's avatar
michaelni committed
1416

1417 1418 1419 1420
    if (dst == NULL){
        return NULL;
    }

1421
//printf("decoding esc\n");
michael's avatar
michael committed
1422 1423 1424
    memcpy(dst, src, i);
    si=di=i;
    while(si+2<length){
michaelni's avatar
michaelni committed
1425
        //remove escapes (very rare 1:2^22)
michael's avatar
michael committed
1426 1427 1428 1429
        if(src[si+2]>3){
            dst[di++]= src[si++];
            dst[di++]= src[si++];
        }else if(src[si]==0 && src[si+1]==0){
michaelni's avatar
michaelni committed
1430 1431 1432 1433
            if(src[si+2]==3){ //escape
                dst[di++]= 0;
                dst[di++]= 0;
                si+=3;
1434
                continue;
michaelni's avatar
michaelni committed
1435
            }else //next start code
michael's avatar
michael committed
1436
                goto nsc;
michaelni's avatar
michaelni committed
1437 1438 1439 1440
        }

        dst[di++]= src[si++];
    }
michael's avatar
michael committed
1441 1442 1443
    while(si<length)
        dst[di++]= src[si++];
nsc:
michaelni's avatar
michaelni committed
1444

1445 1446
    memset(dst+di, 0, FF_INPUT_BUFFER_PADDING_SIZE);

michaelni's avatar
michaelni committed
1447 1448
    *dst_length= di;
    *consumed= si + 1;//+1 for the header
diego's avatar
diego committed
1449
//FIXME store exact number of bits in the getbitcontext (it is needed for decoding)
michaelni's avatar
michaelni committed
1450 1451 1452
    return dst;
}

1453
int ff_h264_decode_rbsp_trailing(H264Context *h, const uint8_t *src){
michaelni's avatar
michaelni committed
1454 1455 1456
    int v= *src;
    int r;

mbardiaux's avatar
mbardiaux committed
1457
    tprintf(h->s.avctx, "rbsp trailing %X\n", v);
michaelni's avatar
michaelni committed
1458 1459 1460 1461 1462 1463 1464 1465 1466

    for(r=1; r<9; r++){
        if(v&1) return r;
        v>>=1;
    }
    return 0;
}

/**
diego's avatar
diego committed
1467
 * IDCT transforms the 16 dc values and dequantizes them.
michaelni's avatar
michaelni committed
1468 1469
 * @param qp quantization parameter
 */
lorenm's avatar
lorenm committed
1470
static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
michaelni's avatar
michaelni committed
1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498
#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];

diego's avatar
diego committed
1499
        block[stride*0 +offset]= ((((z0 + z3)*qmul + 128 ) >> 8)); //FIXME think about merging this into decode_residual
lorenm's avatar
lorenm committed
1500 1501 1502
        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));
michaelni's avatar
michaelni committed
1503 1504 1505
    }
}

1506
#if 0
michaelni's avatar
michaelni committed
1507
/**
diego's avatar
diego committed
1508
 * DCT transforms the 16 dc values.
michaelni's avatar
michaelni committed
1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543
 * @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;
    }
}
1544 1545
#endif

michaelni's avatar
michaelni committed
1546 1547 1548
#undef xStride
#undef stride

lorenm's avatar
lorenm committed
1549
static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
michaelni's avatar
michaelni committed
1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563
    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;

lorenm's avatar
lorenm committed
1564 1565 1566 1567
    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;
michaelni's avatar
michaelni committed
1568 1569
}

1570
#if 0
michaelni's avatar
michaelni committed
1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590
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);
}
1591
#endif
michaelni's avatar
michaelni committed
1592 1593 1594 1595

/**
 * gets the chroma qp.
 */
1596
static inline int get_chroma_qp(H264Context *h, int t, int qscale){
1597
    return h->pps.chroma_qp_table[t][qscale];
michaelni's avatar
michaelni committed
1598 1599 1600 1601 1602 1603 1604 1605
}

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;
lorenm's avatar
lorenm committed
1606
    int my=       h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
michaelni's avatar
michaelni committed
1607
    const int luma_xy= (mx&3) + ((my&3)<<2);
lorenm's avatar
lorenm committed
1608 1609 1610 1611
    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;
michaelni's avatar
michaelni committed
1612 1613 1614
    int emu=0;
    const int full_mx= mx>>2;
    const int full_my= my>>2;
1615
    const int pic_width  = 16*s->mb_width;
1616
    const int pic_height = 16*s->mb_height >> MB_FIELD;
1617

michaelni's avatar
michaelni committed
1618 1619
    if(mx&7) extra_width -= 3;
    if(my&7) extra_height -= 3;
1620 1621 1622 1623

    if(   full_mx < 0-extra_width
       || full_my < 0-extra_height
       || full_mx + 16/*FIXME*/ > pic_width + extra_width
1624
       || full_my + 16/*FIXME*/ > pic_height + extra_height){
lorenm's avatar
lorenm committed
1625 1626
        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;
michaelni's avatar
michaelni committed
1627 1628
        emu=1;
    }
1629

lorenm's avatar
lorenm committed
1630
    qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); //FIXME try variable height perhaps?
michaelni's avatar
michaelni committed
1631
    if(!square){
lorenm's avatar
lorenm committed
1632
        qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
michaelni's avatar
michaelni committed
1633
    }
1634

1635
    if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
1636

1637
    if(MB_FIELD){
lorenm's avatar
lorenm committed
1638
        // chroma offset when predicting from a field of opposite parity
1639
        my += 2 * ((s->mb_y & 1) - (pic->reference - 1));
lorenm's avatar
lorenm committed
1640 1641 1642 1643 1644
        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;

michaelni's avatar
michaelni committed
1645
    if(emu){
lorenm's avatar
lorenm committed
1646
        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);
michaelni's avatar
michaelni committed
1647 1648
            src_cb= s->edge_emu_buffer;
    }
lorenm's avatar
lorenm committed
1649
    chroma_op(dest_cb, src_cb, h->mb_uvlinesize, chroma_height, mx&7, my&7);
michaelni's avatar
michaelni committed
1650 1651

    if(emu){
lorenm's avatar
lorenm committed
1652
        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);
michaelni's avatar
michaelni committed
1653 1654
            src_cr= s->edge_emu_buffer;
    }
lorenm's avatar
lorenm committed
1655
    chroma_op(dest_cr, src_cr, h->mb_uvlinesize, chroma_height, mx&7, my&7);
michaelni's avatar
michaelni committed
1656 1657
}

lorenm's avatar
lorenm committed
1658
static inline void mc_part_std(H264Context *h, int n, int square, int chroma_height, int delta,
michaelni's avatar
michaelni committed
1659 1660 1661 1662 1663 1664 1665 1666
                           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;
1667

lorenm's avatar
lorenm committed
1668 1669 1670
    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;
michaelni's avatar
michaelni committed
1671
    x_offset += 8*s->mb_x;
1672
    y_offset += 8*(s->mb_y >> MB_FIELD);
1673

michaelni's avatar
michaelni committed
1674
    if(list0){
1675
        Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
michaelni's avatar
michaelni committed
1676 1677 1678 1679 1680 1681 1682 1683 1684
        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){
1685
        Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
michaelni's avatar
michaelni committed
1686 1687 1688 1689 1690 1691
        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);
    }
}

lorenm's avatar
lorenm committed
1692 1693 1694 1695 1696 1697 1698 1699 1700
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;

lorenm's avatar
lorenm committed
1701 1702 1703
    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;
lorenm's avatar
lorenm committed
1704
    x_offset += 8*s->mb_x;
1705
    y_offset += 8*(s->mb_y >> MB_FIELD);
1706

lorenm's avatar
lorenm committed
1707 1708 1709 1710
    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;
lorenm's avatar
lorenm committed
1711 1712
        uint8_t *tmp_cr = s->obmc_scratchpad + 8;
        uint8_t *tmp_y  = s->obmc_scratchpad + 8*h->mb_uvlinesize;
lorenm's avatar
lorenm committed
1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725
        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;
lorenm's avatar
lorenm committed
1726 1727 1728
            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);
lorenm's avatar
lorenm committed
1729
        }else{
lorenm's avatar
lorenm committed
1730
            luma_weight_avg(dest_y, tmp_y, h->mb_linesize, h->luma_log2_weight_denom,
1731
                            h->luma_weight[0][refn0], h->luma_weight[1][refn1],
lorenm's avatar
lorenm committed
1732
                            h->luma_offset[0][refn0] + h->luma_offset[1][refn1]);
lorenm's avatar
lorenm committed
1733
            chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1734
                            h->chroma_weight[0][refn0][0], h->chroma_weight[1][refn1][0],
lorenm's avatar
lorenm committed
1735
                            h->chroma_offset[0][refn0][0] + h->chroma_offset[1][refn1][0]);
lorenm's avatar
lorenm committed
1736
            chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1737
                            h->chroma_weight[0][refn0][1], h->chroma_weight[1][refn1][1],
lorenm's avatar
lorenm committed
1738
                            h->chroma_offset[0][refn0][1] + h->chroma_offset[1][refn1][1]);
lorenm's avatar
lorenm committed
1739 1740 1741 1742 1743 1744 1745 1746 1747
        }
    }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);

lorenm's avatar
lorenm committed
1748
        luma_weight_op(dest_y, h->mb_linesize, h->luma_log2_weight_denom,
lorenm's avatar
lorenm committed
1749 1750
                       h->luma_weight[list][refn], h->luma_offset[list][refn]);
        if(h->use_weight_chroma){
lorenm's avatar
lorenm committed
1751
            chroma_weight_op(dest_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
lorenm's avatar
lorenm committed
1752
                             h->chroma_weight[list][refn][0], h->chroma_offset[list][refn][0]);
lorenm's avatar
lorenm committed
1753
            chroma_weight_op(dest_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
lorenm's avatar
lorenm committed
1754 1755 1756 1757 1758 1759 1760 1761 1762 1763
                             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,
1764
                           h264_weight_func *weight_op, h264_biweight_func *weight_avg,
lorenm's avatar
lorenm committed
1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776
                           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);
}

1777 1778 1779 1780 1781 1782 1783 1784 1785
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;
lorenm's avatar
lorenm committed
1786
        int off= mx + (my + (s->mb_x&3)*4)*h->mb_linesize + 64;
1787 1788 1789 1790 1791 1792
        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);
    }
}

michaelni's avatar
michaelni committed
1793 1794
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),
lorenm's avatar
lorenm committed
1795 1796
                      qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg),
                      h264_weight_func *weight_op, h264_biweight_func *weight_avg){
michaelni's avatar
michaelni committed
1797
    MpegEncContext * const s = &h->s;
1798
    const int mb_xy= h->mb_xy;
michaelni's avatar
michaelni committed
1799
    const int mb_type= s->current_picture.mb_type[mb_xy];
1800

michaelni's avatar
michaelni committed
1801
    assert(IS_INTER(mb_type));
1802

1803 1804
    prefetch_motion(h, 0);

michaelni's avatar
michaelni committed
1805 1806 1807
    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],
lorenm's avatar
lorenm committed
1808
                &weight_op[0], &weight_avg[0],
michaelni's avatar
michaelni committed
1809 1810 1811 1812
                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],
lorenm's avatar
lorenm committed
1813
                &weight_op[1], &weight_avg[1],
michaelni's avatar
michaelni committed
1814 1815 1816
                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],
lorenm's avatar
lorenm committed
1817
                &weight_op[1], &weight_avg[1],
michaelni's avatar
michaelni committed
1818 1819
                IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
    }else if(IS_8X16(mb_type)){
lorenm's avatar
lorenm committed
1820
        mc_part(h, 0, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
michaelni's avatar
michaelni committed
1821
                qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
lorenm's avatar
lorenm committed
1822
                &weight_op[2], &weight_avg[2],
michaelni's avatar
michaelni committed
1823
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
lorenm's avatar
lorenm committed
1824
        mc_part(h, 4, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
michaelni's avatar
michaelni committed
1825
                qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
lorenm's avatar
lorenm committed
1826
                &weight_op[2], &weight_avg[2],
michaelni's avatar
michaelni committed
1827 1828 1829
                IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
    }else{
        int i;
1830

michaelni's avatar
michaelni committed
1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841
        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],
lorenm's avatar
lorenm committed
1842
                    &weight_op[3], &weight_avg[3],
michaelni's avatar
michaelni committed
1843 1844 1845 1846
                    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],
lorenm's avatar
lorenm committed
1847
                    &weight_op[4], &weight_avg[4],
michaelni's avatar
michaelni committed
1848 1849 1850
                    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],
lorenm's avatar
lorenm committed
1851
                    &weight_op[4], &weight_avg[4],
michaelni's avatar
michaelni committed
1852 1853
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
            }else if(IS_SUB_4X8(sub_mb_type)){
lorenm's avatar
lorenm committed
1854
                mc_part(h, n  , 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
michaelni's avatar
michaelni committed
1855
                    qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
lorenm's avatar
lorenm committed
1856
                    &weight_op[5], &weight_avg[5],
michaelni's avatar
michaelni committed
1857
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
lorenm's avatar
lorenm committed
1858
                mc_part(h, n+1, 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
michaelni's avatar
michaelni committed
1859
                    qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
lorenm's avatar
lorenm committed
1860
                    &weight_op[5], &weight_avg[5],
michaelni's avatar
michaelni committed
1861 1862 1863 1864 1865 1866 1867 1868 1869
                    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],
lorenm's avatar
lorenm committed
1870
                        &weight_op[6], &weight_avg[6],
michaelni's avatar
michaelni committed
1871 1872 1873 1874 1875
                        IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
                }
            }
        }
    }
1876 1877

    prefetch_motion(h, 1);
michaelni's avatar
michaelni committed
1878 1879
}

michael's avatar
michael committed
1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904
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;
            }
        }
    }
}

1905
static av_cold void decode_init_vlc(void){
michaelni's avatar
michaelni committed
1906 1907 1908 1909
    static int done = 0;

    if (!done) {
        int i;
cehoyos's avatar
cehoyos committed
1910
        int offset;
michaelni's avatar
michaelni committed
1911 1912
        done = 1;

cehoyos's avatar
cehoyos committed
1913 1914
        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;
1915
        init_vlc(&chroma_dc_coeff_token_vlc, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 4*5,
michaelni's avatar
michaelni committed
1916
                 &chroma_dc_coeff_token_len [0], 1, 1,
cehoyos's avatar
cehoyos committed
1917 1918
                 &chroma_dc_coeff_token_bits[0], 1, 1,
                 INIT_VLC_USE_NEW_STATIC);
michaelni's avatar
michaelni committed
1919

cehoyos's avatar
cehoyos committed
1920
        offset = 0;
michaelni's avatar
michaelni committed
1921
        for(i=0; i<4; i++){
cehoyos's avatar
cehoyos committed
1922 1923
            coeff_token_vlc[i].table = coeff_token_vlc_tables+offset;
            coeff_token_vlc[i].table_allocated = coeff_token_vlc_tables_size[i];
1924
            init_vlc(&coeff_token_vlc[i], COEFF_TOKEN_VLC_BITS, 4*17,
michaelni's avatar
michaelni committed
1925
                     &coeff_token_len [i][0], 1, 1,
cehoyos's avatar
cehoyos committed
1926 1927 1928
                     &coeff_token_bits[i][0], 1, 1,
                     INIT_VLC_USE_NEW_STATIC);
            offset += coeff_token_vlc_tables_size[i];
michaelni's avatar
michaelni committed
1929
        }
cehoyos's avatar
cehoyos committed
1930 1931 1932 1933 1934
        /*
         * This is a one time safety check to make sure that
         * the packed static coeff_token_vlc table sizes
         * were initialized correctly.
         */
1935
        assert(offset == FF_ARRAY_ELEMS(coeff_token_vlc_tables));
michaelni's avatar
michaelni committed
1936 1937

        for(i=0; i<3; i++){
cehoyos's avatar
cehoyos committed
1938 1939 1940 1941
            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,
michaelni's avatar
michaelni committed
1942
                     &chroma_dc_total_zeros_len [i][0], 1, 1,
cehoyos's avatar
cehoyos committed
1943 1944
                     &chroma_dc_total_zeros_bits[i][0], 1, 1,
                     INIT_VLC_USE_NEW_STATIC);
michaelni's avatar
michaelni committed
1945 1946
        }
        for(i=0; i<15; i++){
cehoyos's avatar
cehoyos committed
1947 1948 1949 1950
            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,
michaelni's avatar
michaelni committed
1951
                     &total_zeros_len [i][0], 1, 1,
cehoyos's avatar
cehoyos committed
1952 1953
                     &total_zeros_bits[i][0], 1, 1,
                     INIT_VLC_USE_NEW_STATIC);
michaelni's avatar
michaelni committed
1954 1955 1956
        }

        for(i=0; i<6; i++){
cehoyos's avatar
cehoyos committed
1957 1958 1959 1960
            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,
michaelni's avatar
michaelni committed
1961
                     &run_len [i][0], 1, 1,
cehoyos's avatar
cehoyos committed
1962 1963
                     &run_bits[i][0], 1, 1,
                     INIT_VLC_USE_NEW_STATIC);
michaelni's avatar
michaelni committed
1964
        }
cehoyos's avatar
cehoyos committed
1965 1966
        run7_vlc.table = run7_vlc_table,
        run7_vlc.table_allocated = run7_vlc_table_size;
1967
        init_vlc(&run7_vlc, RUN7_VLC_BITS, 16,
michaelni's avatar
michaelni committed
1968
                 &run_len [6][0], 1, 1,
cehoyos's avatar
cehoyos committed
1969 1970
                 &run_bits[6][0], 1, 1,
                 INIT_VLC_USE_NEW_STATIC);
michael's avatar
michael committed
1971 1972

        init_cavlc_level_tab();
michaelni's avatar
michaelni committed
1973 1974 1975 1976
    }
}

static void free_tables(H264Context *h){
benoit's avatar
 
benoit committed
1977
    int i;
1978
    H264Context *hx;
michaelni's avatar
michaelni committed
1979
    av_freep(&h->intra4x4_pred_mode);
1980 1981
    av_freep(&h->chroma_pred_mode_table);
    av_freep(&h->cbp_table);
1982 1983
    av_freep(&h->mvd_table[0]);
    av_freep(&h->mvd_table[1]);
1984
    av_freep(&h->direct_table);
michaelni's avatar
michaelni committed
1985 1986 1987
    av_freep(&h->non_zero_count);
    av_freep(&h->slice_table_base);
    h->slice_table= NULL;
1988

michaelni's avatar
michaelni committed
1989 1990
    av_freep(&h->mb2b_xy);
    av_freep(&h->mb2b8_xy);
lorenm's avatar
lorenm committed
1991

1992 1993 1994 1995 1996 1997 1998
    for(i = 0; i < h->s.avctx->thread_count; i++) {
        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);
    }
michaelni's avatar
michaelni committed
1999 2000
}

lorenm's avatar
lorenm committed
2001 2002
static void init_dequant8_coeff_table(H264Context *h){
    int i,q,x;
lorenm's avatar
lorenm committed
2003
    const int transpose = (h->s.dsp.h264_idct8_add != ff_h264_idct8_add_c); //FIXME ugly
lorenm's avatar
lorenm committed
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013
    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++){
2014 2015
            int shift = div6[q];
            int idx = rem6[q];
lorenm's avatar
lorenm committed
2016
            for(x=0; x<64; x++)
lorenm's avatar
lorenm committed
2017 2018 2019
                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;
lorenm's avatar
lorenm committed
2020 2021 2022 2023 2024 2025
        }
    }
}

static void init_dequant4_coeff_table(H264Context *h){
    int i,j,q,x;
2026
    const int transpose = (h->s.dsp.h264_idct_add != ff_h264_idct_add_c); //FIXME ugly
lorenm's avatar
lorenm committed
2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038
    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++){
2039 2040
            int shift = div6[q] + 2;
            int idx = rem6[q];
lorenm's avatar
lorenm committed
2041
            for(x=0; x<16; x++)
2042 2043
                h->dequant4_coeff[i][q][transpose ? (x>>2)|((x<<2)&0xF) : x] =
                    ((uint32_t)dequant4_coeff_init[idx][(x&1) + ((x>>2)&1)] *
lorenm's avatar
lorenm committed
2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065
                    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;
    }
}


michaelni's avatar
michaelni committed
2066 2067
/**
 * allocates tables.
2068
 * needs width/height
michaelni's avatar
michaelni committed
2069 2070 2071
 */
static int alloc_tables(H264Context *h){
    MpegEncContext * const s = &h->s;
2072
    const int big_mb_num= s->mb_stride * (s->mb_height+1);
lorenm's avatar
lorenm committed
2073
    int x,y;
michaelni's avatar
michaelni committed
2074 2075

    CHECKED_ALLOCZ(h->intra4x4_pred_mode, big_mb_num * 8  * sizeof(uint8_t))
2076

2077
    CHECKED_ALLOCZ(h->non_zero_count    , big_mb_num * 16 * sizeof(uint8_t))
2078
    CHECKED_ALLOCZ(h->slice_table_base  , (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base))
michael's avatar
michael committed
2079
    CHECKED_ALLOCZ(h->cbp_table, big_mb_num * sizeof(uint16_t))
michaelni's avatar
michaelni committed
2080

2081 2082 2083 2084
    CHECKED_ALLOCZ(h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t))
    CHECKED_ALLOCZ(h->mvd_table[0], 32*big_mb_num * sizeof(uint16_t));
    CHECKED_ALLOCZ(h->mvd_table[1], 32*big_mb_num * sizeof(uint16_t));
    CHECKED_ALLOCZ(h->direct_table, 32*big_mb_num * sizeof(uint8_t));
2085

2086
    memset(h->slice_table_base, -1, (big_mb_num+s->mb_stride)  * sizeof(*h->slice_table_base));
lorenm's avatar
lorenm committed
2087
    h->slice_table= h->slice_table_base + s->mb_stride*2 + 1;
michaelni's avatar
michaelni committed
2088

2089 2090
    CHECKED_ALLOCZ(h->mb2b_xy  , big_mb_num * sizeof(uint32_t));
    CHECKED_ALLOCZ(h->mb2b8_xy , big_mb_num * sizeof(uint32_t));
michaelni's avatar
michaelni committed
2091 2092
    for(y=0; y<s->mb_height; y++){
        for(x=0; x<s->mb_width; x++){
2093
            const int mb_xy= x + y*s->mb_stride;
michaelni's avatar
michaelni committed
2094 2095
            const int b_xy = 4*x + 4*y*h->b_stride;
            const int b8_xy= 2*x + 2*y*h->b8_stride;
2096

michaelni's avatar
michaelni committed
2097 2098 2099 2100
            h->mb2b_xy [mb_xy]= b_xy;
            h->mb2b8_xy[mb_xy]= b8_xy;
        }
    }
lorenm's avatar
lorenm committed
2101

2102 2103
    s->obmc_scratchpad = NULL;

2104 2105 2106
    if(!h->dequant4_coeff[0])
        init_dequant_tables(h);

michaelni's avatar
michaelni committed
2107 2108 2109 2110 2111 2112
    return 0;
fail:
    free_tables(h);
    return -1;
}

2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144
/**
 * 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){
    CHECKED_ALLOCZ(h->top_borders[0], h->s.mb_width * (16+8+8) * sizeof(uint8_t))
    CHECKED_ALLOCZ(h->top_borders[1], h->s.mb_width * (16+8+8) * sizeof(uint8_t))

    return 0;
fail:
    return -1; // free_tables will clean up for us
}

2145
static av_cold void common_init(H264Context *h){
michaelni's avatar
michaelni committed
2146 2147 2148 2149 2150
    MpegEncContext * const s = &h->s;

    s->width = s->avctx->width;
    s->height = s->avctx->height;
    s->codec_id= s->avctx->codec->id;
2151

2152
    ff_h264_pred_init(&h->hpc, s->codec_id);
michaelni's avatar
michaelni committed
2153

lorenm's avatar
lorenm committed
2154
    h->dequant_coeff_pps= -1;
michael's avatar
michael committed
2155
    s->unrestricted_mv=1;
michaelni's avatar
michaelni committed
2156
    s->decode=1; //FIXME
2157

2158 2159
    dsputil_init(&s->dsp, s->avctx); // needed so that idct permutation is known early

2160 2161
    memset(h->pps.scaling_matrix4, 16, 6*16*sizeof(uint8_t));
    memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t));
michaelni's avatar
michaelni committed
2162 2163
}

2164
static av_cold int decode_init(AVCodecContext *avctx){
michaelni's avatar
michaelni committed
2165 2166 2167
    H264Context *h= avctx->priv_data;
    MpegEncContext * const s = &h->s;

michael's avatar
michael committed
2168
    MPV_decode_defaults(s);
2169

michaelni's avatar
michaelni committed
2170 2171 2172 2173 2174 2175 2176 2177
    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;
2178
    s->quarter_sample = 1;
michaelni's avatar
michaelni committed
2179
    s->low_delay= 1;
2180 2181 2182

    if(avctx->codec_id == CODEC_ID_SVQ3)
        avctx->pix_fmt= PIX_FMT_YUVJ420P;
cehoyos's avatar
cehoyos committed
2183
    else if(s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
2184
        avctx->pix_fmt= PIX_FMT_VDPAU_H264;
2185
    else
michael's avatar
michael committed
2186
        avctx->pix_fmt= PIX_FMT_YUV420P;
michaelni's avatar
michaelni committed
2187

2188
    decode_init_vlc();
2189

2190 2191
    if(avctx->extradata_size > 0 && avctx->extradata &&
       *(char *)avctx->extradata == 1){
2192 2193
        h->is_avc = 1;
        h->got_avcC = 0;
2194 2195
    } else {
        h->is_avc = 0;
2196 2197
    }

2198
    h->thread_context[0] = h;
2199
    h->outputed_poc = INT_MIN;
2200
    h->prev_poc_msb= 1<<16;
2201
    h->sei_recovery_frame_cnt = -1;
2202
    h->sei_dpb_output_delay = 0;
2203
    h->sei_cpb_removal_delay = -1;
2204
    h->sei_buffering_period_present = 0;
michaelni's avatar
michaelni committed
2205 2206 2207
    return 0;
}

2208
static int frame_start(H264Context *h){
michaelni's avatar
michaelni committed
2209 2210 2211
    MpegEncContext * const s = &h->s;
    int i;

2212 2213
    if(MPV_frame_start(s, s->avctx) < 0)
        return -1;
michaelni's avatar
michaelni committed
2214
    ff_er_frame_start(s);
2215 2216 2217
    /*
     * MPV_frame_start uses pict_type to derive key_frame.
     * This is incorrect for H.264; IDR markings must be used.
diego's avatar
diego committed
2218
     * Zero here; IDR markings per slice in frame or fields are ORed in later.
2219 2220 2221
     * See decode_nal_units().
     */
    s->current_picture_ptr->key_frame= 0;
michaelni's avatar
michaelni committed
2222 2223 2224 2225 2226

    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);
2227
        h->block_offset[24+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->linesize*((scan8[i] - scan8[0])>>3);
michaelni's avatar
michaelni committed
2228 2229 2230 2231
    }
    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);
2232 2233
        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);
michaelni's avatar
michaelni committed
2234 2235
    }

2236 2237
    /* can't be in alloc_tables because linesize isn't known there.
     * FIXME: redo bipred weight to not require extra buffer? */
2238 2239 2240
    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);
lorenm's avatar
lorenm committed
2241 2242

    /* some macroblocks will be accessed before they're available */
2243
    if(FRAME_MBAFF || s->avctx->thread_count > 1)
2244
        memset(h->slice_table, -1, (s->mb_height*s->mb_stride-1) * sizeof(*h->slice_table));
2245

michaelni's avatar
michaelni committed
2246
//    s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
2247

diego's avatar
diego committed
2248
    // We mark the current picture as non-reference after allocating it, so
2249 2250 2251 2252 2253 2254 2255
    // 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;
2256 2257 2258

    s->current_picture_ptr->field_poc[0]=
    s->current_picture_ptr->field_poc[1]= INT_MAX;
2259
    assert(s->current_picture_ptr->long_ref==0);
2260

2261
    return 0;
michaelni's avatar
michaelni committed
2262 2263
}

2264
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){
2265 2266
    MpegEncContext * const s = &h->s;
    int i;
2267 2268 2269 2270 2271
    int step    = 1;
    int offset  = 1;
    int uvoffset= 1;
    int top_idx = 1;
    int skiplast= 0;
2272

2273 2274 2275 2276
    src_y  -=   linesize;
    src_cb -= uvlinesize;
    src_cr -= uvlinesize;

2277 2278 2279 2280 2281 2282 2283
    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);
2284
                if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2285 2286 2287 2288 2289 2290 2291
                    *(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];
2292
                if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304
                    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;
    }

2305
    // There are two lines saved, the line above the the top macroblock of a pair,
2306
    // and the line above the bottom macroblock
2307 2308 2309
    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];
2310
    }
2311

2312 2313
    *(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);
2314

2315
    if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2316 2317 2318 2319 2320
        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];
2321
        }
2322 2323
        *(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);
2324 2325 2326
    }
}

2327
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){
2328 2329 2330
    MpegEncContext * const s = &h->s;
    int temp8, i;
    uint64_t temp64;
2331 2332 2333
    int deblock_left;
    int deblock_top;
    int mb_xy;
2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349
    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;
    }
2350 2351

    if(h->deblocking_filter == 2) {
2352
        mb_xy = h->mb_xy;
2353 2354 2355 2356
        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);
2357
        deblock_top =  (s->mb_y > !!MB_FIELD);
2358
    }
2359 2360 2361 2362 2363 2364 2365 2366 2367 2368

    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;
2369 2370

    if(deblock_left){
2371 2372
        for(i = !deblock_top; i<16; i++){
            XCHG(h->left_border[offset+i*step], src_y [i*  linesize], temp8, xchg);
2373
        }
2374
        XCHG(h->left_border[offset+i*step], src_y [i*  linesize], temp8, 1);
2375 2376 2377
    }

    if(deblock_top){
2378 2379
        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);
reimar's avatar
reimar committed
2380
        if(s->mb_x+1 < s->mb_width){
2381
            XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x+1]), *(uint64_t*)(src_y +17), temp64, 1);
lorenm's avatar
lorenm committed
2382
        }
2383 2384
    }

2385
    if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2386
        if(deblock_left){
2387 2388 2389
            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);
2390
            }
2391 2392
            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);
2393 2394
        }
        if(deblock_top){
2395 2396
            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);
2397 2398 2399 2400
        }
    }
}

2401
static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
michaelni's avatar
michaelni committed
2402 2403 2404
    MpegEncContext * const s = &h->s;
    const int mb_x= s->mb_x;
    const int mb_y= s->mb_y;
2405
    const int mb_xy= h->mb_xy;
michaelni's avatar
michaelni committed
2406 2407 2408 2409
    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;
2410
    int *block_offset = &h->block_offset[0];
michael's avatar
michael committed
2411
    const int transform_bypass = !simple && (s->qscale == 0 && h->sps.transform_bypass);
2412
    /* is_h264 should always be true if SVQ3 is disabled. */
2413
    const int is_h264 = !CONFIG_SVQ3_DECODER || simple || s->codec_id == CODEC_ID_H264;
lorenm's avatar
lorenm committed
2414
    void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
2415
    void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
michaelni's avatar
michaelni committed
2416

2417 2418 2419
    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;
michaelni's avatar
michaelni committed
2420

lorenm's avatar
lorenm committed
2421 2422 2423
    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);

2424
    if (!simple && MB_FIELD) {
lorenm's avatar
lorenm committed
2425 2426
        linesize   = h->mb_linesize   = s->linesize * 2;
        uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
2427
        block_offset = &h->block_offset[24];
diego's avatar
diego committed
2428
        if(mb_y&1){ //FIXME move out of this function?
michaelni's avatar
michaelni committed
2429
            dest_y -= s->linesize*15;
2430 2431
            dest_cb-= s->uvlinesize*7;
            dest_cr-= s->uvlinesize*7;
michaelni's avatar
michaelni committed
2432
        }
lorenm's avatar
lorenm committed
2433 2434
        if(FRAME_MBAFF) {
            int list;
2435
            for(list=0; list<h->list_count; list++){
lorenm's avatar
lorenm committed
2436 2437 2438 2439
                if(!USES_LIST(mb_type, list))
                    continue;
                if(IS_16X16(mb_type)){
                    int8_t *ref = &h->ref_cache[list][scan8[0]];
andoma's avatar
andoma committed
2440
                    fill_rectangle(ref, 4, 4, 8, (16+*ref)^(s->mb_y&1), 1);
lorenm's avatar
lorenm committed
2441 2442 2443 2444
                }else{
                    for(i=0; i<16; i+=4){
                        int ref = h->ref_cache[list][scan8[i]];
                        if(ref >= 0)
andoma's avatar
andoma committed
2445
                            fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2, 8, (16+ref)^(s->mb_y&1), 1);
lorenm's avatar
lorenm committed
2446 2447 2448 2449
                    }
                }
            }
        }
michaelni's avatar
michaelni committed
2450
    } else {
lorenm's avatar
lorenm committed
2451 2452
        linesize   = h->mb_linesize   = s->linesize;
        uvlinesize = h->mb_uvlinesize = s->uvlinesize;
michaelni's avatar
michaelni committed
2453 2454
//        dct_offset = s->linesize * 16;
    }
2455

2456
    if (!simple && IS_INTRA_PCM(mb_type)) {
michael's avatar
michael committed
2457 2458
        for (i=0; i<16; i++) {
            memcpy(dest_y + i*  linesize, h->mb       + i*8, 16);
2459
        }
michael's avatar
michael committed
2460 2461 2462
        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);
2463
        }
2464 2465
    } else {
        if(IS_INTRA(mb_type)){
2466
            if(h->deblocking_filter)
2467
                xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1, simple);
2468

2469
            if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2470 2471
                h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
                h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
2472
            }
michaelni's avatar
michaelni committed
2473

2474
            if(IS_INTRA4x4(mb_type)){
2475
                if(simple || !s->encoding){
lorenm's avatar
lorenm committed
2476
                    if(IS_8x8DCT(mb_type)){
2477 2478 2479
                        if(transform_bypass){
                            idct_dc_add =
                            idct_add    = s->dsp.add_pixels8;
2480
                        }else{
2481 2482 2483
                            idct_dc_add = s->dsp.h264_idct8_dc_add;
                            idct_add    = s->dsp.h264_idct8_add;
                        }
lorenm's avatar
lorenm committed
2484 2485 2486
                        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] ];
michael's avatar
michael committed
2487 2488 2489
                            if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
                                h->hpc.pred8x8l_add[dir](ptr, h->mb + i*16, linesize);
                            }else{
2490 2491 2492 2493 2494 2495 2496 2497 2498
                                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);
                                }
michael's avatar
michael committed
2499
                            }
lorenm's avatar
lorenm committed
2500
                        }
2501 2502 2503 2504 2505 2506 2507 2508
                    }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;
                        }
michael's avatar
michael committed
2509 2510 2511
                        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] ];
2512

michael's avatar
michael committed
2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525
                            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;
2526
                                }else
michael's avatar
michael committed
2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539
                                    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);
                                }
2540
                            }
michael's avatar
michael committed
2541
                        }
michaelni's avatar
michaelni committed
2542
                    }
michaelni's avatar
michaelni committed
2543
                }
2544
            }else{
2545
                h->hpc.pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
2546
                if(is_h264){
lorenm's avatar
lorenm committed
2547
                    if(!transform_bypass)
takis's avatar
takis committed
2548
                        h264_luma_dc_dequant_idct_c(h->mb, s->qscale, h->dequant4_coeff[0][s->qscale][0]);
lorenm's avatar
lorenm committed
2549
                }else
2550
                    svq3_luma_dc_dequant_idct_c(h->mb, s->qscale);
michaelni's avatar
michaelni committed
2551
            }
2552
            if(h->deblocking_filter)
2553
                xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0, simple);
2554
        }else if(is_h264){
2555
            hl_motion(h, dest_y, dest_cb, dest_cr,
2556 2557
                      s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
                      s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
2558
                      s->dsp.weight_h264_pixels_tab, s->dsp.biweight_h264_pixels_tab);
michaelni's avatar
michaelni committed
2559
        }
2560 2561 2562


        if(!IS_INTRA4x4(mb_type)){
2563
            if(is_h264){
2564
                if(IS_INTRA16x16(mb_type)){
2565 2566
                    if(transform_bypass){
                        if(h->sps.profile_idc==244 && (h->intra16x16_pred_mode==VERT_PRED8x8 || h->intra16x16_pred_mode==HOR_PRED8x8)){
michael's avatar
michael committed
2567 2568 2569 2570
                            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])
2571
                                    s->dsp.add_pixels4(dest_y + block_offset[i], h->mb + i*16, linesize);
michael's avatar
michael committed
2572
                            }
2573 2574 2575
                        }
                    }else{
                         s->dsp.h264_idct_add16intra(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
michael's avatar
michael committed
2576
                    }
2577
                }else if(h->cbp&15){
2578
                    if(transform_bypass){
michael's avatar
michael committed
2579
                        const int di = IS_8x8DCT(mb_type) ? 4 : 1;
2580
                        idct_add= IS_8x8DCT(mb_type) ? s->dsp.add_pixels8 : s->dsp.add_pixels4;
michael's avatar
michael committed
2581
                        for(i=0; i<16; i+=di){
michael's avatar
michael committed
2582
                            if(h->non_zero_count_cache[ scan8[i] ]){
2583
                                idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
michael's avatar
michael committed
2584
                            }
2585
                        }
2586 2587 2588 2589 2590 2591 2592
                    }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);
                        }
                    }
michaelni's avatar
michaelni committed
2593
                }
2594 2595 2596
            }else{
                for(i=0; i<16; i++){
                    if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
2597
                        uint8_t * const ptr= dest_y + block_offset[i];
2598 2599
                        svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
                    }
michaelni's avatar
michaelni committed
2600
                }
michaelni's avatar
michaelni committed
2601 2602 2603
            }
        }

2604
        if((simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)) && (h->cbp&0x30)){
2605 2606
            uint8_t *dest[2] = {dest_cb, dest_cr};
            if(transform_bypass){
2607 2608 2609 2610
                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{
2611
                    idct_add = s->dsp.add_pixels4;
2612 2613 2614 2615 2616
                    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);
                    }
                }
2617
            }else{
2618 2619
                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]);
michael's avatar
michael committed
2620
                if(is_h264){
2621 2622
                    idct_add = s->dsp.h264_idct_add;
                    idct_dc_add = s->dsp.h264_idct_dc_add;
2623 2624 2625 2626 2627 2628
                    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);
                    }
michael's avatar
michael committed
2629 2630 2631 2632 2633 2634
                }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);
                        }
2635
                    }
michaelni's avatar
michaelni committed
2636
                }
michaelni's avatar
michaelni committed
2637 2638 2639
            }
        }
    }
2640 2641 2642
    if(h->cbp || IS_INTRA(mb_type))
        s->dsp.clear_blocks(h->mb);

2643
    if(h->deblocking_filter) {
2644 2645 2646 2647
        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]);
2648
        if (!simple && FRAME_MBAFF) {
2649
            filter_mb     (h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2650
        } else {
2651
            filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2652
        }
2653
    }
michaelni's avatar
michaelni committed
2654 2655
}

2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671
/**
 * 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;
2672
    const int mb_xy= h->mb_xy;
2673
    const int mb_type= s->current_picture.mb_type[mb_xy];
2674
    int is_complex = CONFIG_SMALL || h->is_complex || IS_INTRA_PCM(mb_type) || s->qscale == 0;
2675 2676 2677 2678 2679 2680

    if (is_complex)
        hl_decode_mb_complex(h);
    else hl_decode_mb_simple(h);
}

2681
static void pic_as_field(Picture *pic, const int parity){
2682 2683
    int i;
    for (i = 0; i < 4; ++i) {
2684
        if (parity == PICT_BOTTOM_FIELD)
2685
            pic->data[i] += pic->linesize[i];
2686
        pic->reference = parity;
2687 2688
        pic->linesize[i] *= 2;
    }
2689
    pic->poc= pic->field_poc[parity == PICT_BOTTOM_FIELD];
2690 2691 2692 2693 2694 2695 2696 2697
}

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

    if (match) {
        *dest = *src;
2698
        if(parity != PICT_FRAME){
michael's avatar
michael committed
2699 2700 2701
            pic_as_field(dest, parity);
            dest->pic_id *= 2;
            dest->pic_id += id_add;
2702
        }
2703 2704 2705 2706 2707
    }

    return match;
}

2708 2709 2710
static int build_def_list(Picture *def, Picture **in, int len, int is_long, int sel){
    int i[2]={0};
    int index=0;
2711

2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723
    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);
2724 2725 2726
        }
    }

2727
    return index;
2728 2729
}

2730 2731 2732
static int add_sorted(Picture **sorted, Picture **src, int len, int limit, int dir){
    int i, best_poc;
    int out_i= 0;
2733

2734 2735
    for(;;){
        best_poc= dir ? INT_MIN : INT_MAX;
2736

2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748
        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;
2749 2750
}

michaelni's avatar
michaelni committed
2751 2752 2753 2754 2755
/**
 * fills the default_ref_list.
 */
static int fill_default_ref_list(H264Context *h){
    MpegEncContext * const s = &h->s;
2756
    int i, len;
2757

2758
    if(h->slice_type_nos==FF_B_TYPE){
2759 2760 2761
        Picture *sorted[32];
        int cur_poc, list;
        int lens[2];
2762

2763 2764 2765 2766
        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;
2767

2768 2769 2770 2771 2772 2773 2774
        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);
2775

2776 2777 2778
            if(len < h->ref_count[list])
                memset(&h->default_ref_list[list][len], 0, sizeof(Picture)*(h->ref_count[list] - len));
            lens[list]= len;
2779 2780
        }

2781 2782 2783 2784
        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]);
2785 2786
        }
    }else{
2787 2788 2789 2790 2791
        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));
michaelni's avatar
michaelni committed
2792
    }
2793 2794
#ifdef TRACE
    for (i=0; i<h->ref_count[0]; i++) {
mbardiaux's avatar
mbardiaux committed
2795
        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]);
2796
    }
2797
    if(h->slice_type_nos==FF_B_TYPE){
2798
        for (i=0; i<h->ref_count[1]; i++) {
2799
            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]);
2800 2801 2802
        }
    }
#endif
michaelni's avatar
michaelni committed
2803 2804 2805
    return 0;
}

2806 2807 2808
static void print_short_term(H264Context *h);
static void print_long_term(H264Context *h);

2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832
/**
 * 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;
}

michaelni's avatar
michaelni committed
2833 2834
static int decode_ref_pic_list_reordering(H264Context *h){
    MpegEncContext * const s = &h->s;
2835
    int list, index, pic_structure;
2836

2837 2838
    print_short_term(h);
    print_long_term(h);
2839

2840
    for(list=0; list<h->list_count; list++){
michaelni's avatar
michaelni committed
2841 2842 2843 2844 2845 2846
        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++){
2847
                unsigned int reordering_of_pic_nums_idc= get_ue_golomb_31(&s->gb);
2848
                unsigned int pic_id;
michaelni's avatar
michaelni committed
2849
                int i;
2850
                Picture *ref = NULL;
2851 2852

                if(reordering_of_pic_nums_idc==3)
2853
                    break;
2854

michaelni's avatar
michaelni committed
2855
                if(index >= h->ref_count[list]){
2856
                    av_log(h->s.avctx, AV_LOG_ERROR, "reference count overflow\n");
michaelni's avatar
michaelni committed
2857 2858
                    return -1;
                }
2859

michaelni's avatar
michaelni committed
2860 2861
                if(reordering_of_pic_nums_idc<3){
                    if(reordering_of_pic_nums_idc<2){
2862
                        const unsigned int abs_diff_pic_num= get_ue_golomb(&s->gb) + 1;
2863
                        int frame_num;
michaelni's avatar
michaelni committed
2864

2865
                        if(abs_diff_pic_num > h->max_pic_num){
2866
                            av_log(h->s.avctx, AV_LOG_ERROR, "abs_diff_pic_num overflow\n");
michaelni's avatar
michaelni committed
2867 2868 2869 2870 2871 2872
                            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;
2873

2874 2875
                        frame_num = pic_num_extract(h, pred, &pic_structure);

2876 2877
                        for(i= h->short_ref_count-1; i>=0; i--){
                            ref = h->short_ref[i];
2878
                            assert(ref->reference);
2879
                            assert(!ref->long_ref);
2880
                            if(
michael's avatar
michael committed
2881 2882
                                   ref->frame_num == frame_num &&
                                   (ref->reference & pic_structure)
2883
                              )
michaelni's avatar
michaelni committed
2884 2885
                                break;
                        }
2886
                        if(i>=0)
2887
                            ref->pic_id= pred;
michaelni's avatar
michaelni committed
2888
                    }else{
2889
                        int long_idx;
michaelni's avatar
michaelni committed
2890
                        pic_id= get_ue_golomb(&s->gb); //long_term_pic_idx
2891 2892 2893 2894

                        long_idx= pic_num_extract(h, pic_id, &pic_structure);

                        if(long_idx>31){
2895 2896 2897
                            av_log(h->s.avctx, AV_LOG_ERROR, "long_term_pic_idx overflow\n");
                            return -1;
                        }
2898 2899
                        ref = h->long_ref[long_idx];
                        assert(!(ref && !ref->reference));
michael's avatar
michael committed
2900
                        if(ref && (ref->reference & pic_structure)){
2901 2902 2903 2904 2905 2906
                            ref->pic_id= pic_id;
                            assert(ref->long_ref);
                            i=0;
                        }else{
                            i=-1;
                        }
michaelni's avatar
michaelni committed
2907 2908
                    }

2909
                    if (i < 0) {
2910
                        av_log(h->s.avctx, AV_LOG_ERROR, "reference picture missing during reorder\n");
michaelni's avatar
michaelni committed
2911
                        memset(&h->ref_list[list][index], 0, sizeof(Picture)); //FIXME
2912 2913 2914 2915
                    } 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;
2916 2917 2918 2919
                        }
                        for(; i > index; i--){
                            h->ref_list[list][i]= h->ref_list[list][i-1];
                        }
2920
                        h->ref_list[list][index]= *ref;
2921
                        if (FIELD_PICTURE){
2922
                            pic_as_field(&h->ref_list[list][index], pic_structure);
2923
                        }
michaelni's avatar
michaelni committed
2924
                    }
2925
                }else{
2926
                    av_log(h->s.avctx, AV_LOG_ERROR, "illegal reordering_of_pic_nums_idc\n");
michaelni's avatar
michaelni committed
2927 2928 2929 2930 2931
                    return -1;
                }
            }
        }
    }
2932
    for(list=0; list<h->list_count; list++){
2933
        for(index= 0; index < h->ref_count[list]; index++){
2934 2935 2936 2937
            if(!h->ref_list[list][index].data[0]){
                av_log(h->s.avctx, AV_LOG_ERROR, "Missing reference picture\n");
                h->ref_list[list][index]= s->current_picture; //FIXME this is not a sensible solution
            }
2938 2939
        }
    }
2940 2941

    return 0;
michaelni's avatar
michaelni committed
2942 2943
}

2944
static void fill_mbaff_ref_list(H264Context *h){
lorenm's avatar
lorenm committed
2945
    int list, i, j;
2946
    for(list=0; list<2; list++){ //FIXME try list_count
lorenm's avatar
lorenm committed
2947 2948 2949 2950 2951 2952
        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;
2953
            field[0].reference = PICT_TOP_FIELD;
2954
            field[0].poc= field[0].field_poc[0];
lorenm's avatar
lorenm committed
2955 2956 2957
            field[1] = field[0];
            for(j=0; j<3; j++)
                field[1].data[j] += frame->linesize[j];
2958
            field[1].reference = PICT_BOTTOM_FIELD;
2959
            field[1].poc= field[1].field_poc[1];
lorenm's avatar
lorenm committed
2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976

            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));
    }
}

michaelni's avatar
michaelni committed
2977 2978 2979
static int pred_weight_table(H264Context *h){
    MpegEncContext * const s = &h->s;
    int list, i;
lorenm's avatar
lorenm committed
2980
    int luma_def, chroma_def;
2981

lorenm's avatar
lorenm committed
2982 2983
    h->use_weight= 0;
    h->use_weight_chroma= 0;
michaelni's avatar
michaelni committed
2984 2985
    h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
    h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
lorenm's avatar
lorenm committed
2986 2987
    luma_def = 1<<h->luma_log2_weight_denom;
    chroma_def = 1<<h->chroma_log2_weight_denom;
michaelni's avatar
michaelni committed
2988 2989

    for(list=0; list<2; list++){
2990 2991
        h->luma_weight_flag[list]   = 0;
        h->chroma_weight_flag[list] = 0;
michaelni's avatar
michaelni committed
2992 2993
        for(i=0; i<h->ref_count[list]; i++){
            int luma_weight_flag, chroma_weight_flag;
2994

michaelni's avatar
michaelni committed
2995 2996 2997 2998
            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);
lorenm's avatar
lorenm committed
2999
                if(   h->luma_weight[list][i] != luma_def
3000
                   || h->luma_offset[list][i] != 0) {
lorenm's avatar
lorenm committed
3001
                    h->use_weight= 1;
3002 3003
                    h->luma_weight_flag[list]= 1;
                }
lorenm's avatar
lorenm committed
3004 3005 3006
            }else{
                h->luma_weight[list][i]= luma_def;
                h->luma_offset[list][i]= 0;
michaelni's avatar
michaelni committed
3007 3008
            }

3009
            if(CHROMA){
michael's avatar
michael committed
3010 3011 3012 3013 3014 3015 3016
                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
3017
                           || h->chroma_offset[list][i][j] != 0) {
michael's avatar
michael committed
3018
                            h->use_weight_chroma= 1;
3019 3020
                            h->chroma_weight_flag[list]= 1;
                        }
michael's avatar
michael committed
3021 3022 3023 3024 3025 3026 3027
                    }
                }else{
                    int j;
                    for(j=0; j<2; j++){
                        h->chroma_weight[list][i][j]= chroma_def;
                        h->chroma_offset[list][i][j]= 0;
                    }
michaelni's avatar
michaelni committed
3028 3029 3030
                }
            }
        }
3031
        if(h->slice_type_nos != FF_B_TYPE) break;
michaelni's avatar
michaelni committed
3032
    }
lorenm's avatar
lorenm committed
3033
    h->use_weight= h->use_weight || h->use_weight_chroma;
michaelni's avatar
michaelni committed
3034 3035 3036
    return 0;
}

lorenm's avatar
lorenm committed
3037 3038
static void implicit_weight_table(H264Context *h){
    MpegEncContext * const s = &h->s;
3039
    int ref0, ref1, i;
lorenm's avatar
lorenm committed
3040 3041
    int cur_poc = s->current_picture_ptr->poc;

3042 3043 3044 3045 3046
    for (i = 0; i < 2; i++) {
        h->luma_weight_flag[i]   = 0;
        h->chroma_weight_flag[i] = 0;
    }

lorenm's avatar
lorenm committed
3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061
    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++){
lorenm's avatar
lorenm committed
3062
            int poc1 = h->ref_list[1][ref1].poc;
reimar's avatar
reimar committed
3063
            int td = av_clip(poc1 - poc0, -128, 127);
lorenm's avatar
lorenm committed
3064
            if(td){
reimar's avatar
reimar committed
3065
                int tb = av_clip(cur_poc - poc0, -128, 127);
diego's avatar
diego committed
3066
                int tx = (16384 + (FFABS(td) >> 1)) / td;
reimar's avatar
reimar committed
3067
                int dist_scale_factor = av_clip((tb*tx + 32) >> 6, -1024, 1023) >> 2;
lorenm's avatar
lorenm committed
3068 3069 3070 3071 3072 3073 3074 3075 3076 3077
                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;
        }
    }
}

3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089
/**
 * 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){
3090
    int i;
3091 3092 3093
    if (pic->reference &= refmask) {
        return 0;
    } else {
michael's avatar
michael committed
3094 3095 3096 3097 3098
        for(i = 0; h->delayed_pic[i]; i++)
            if(pic == h->delayed_pic[i]){
                pic->reference=DELAYED_PIC_REF;
                break;
            }
3099 3100
        return 1;
    }
3101 3102
}

michaelni's avatar
michaelni committed
3103
/**
michael's avatar
michael committed
3104
 * instantaneous decoder refresh.
michaelni's avatar
michaelni committed
3105 3106
 */
static void idr(H264Context *h){
3107
    int i;
michaelni's avatar
michaelni committed
3108

3109
    for(i=0; i<16; i++){
3110
        remove_long(h, i, 0);
michaelni's avatar
michaelni committed
3111
    }
3112
    assert(h->long_ref_count==0);
michaelni's avatar
michaelni committed
3113 3114

    for(i=0; i<h->short_ref_count; i++){
3115
        unreference_pic(h, h->short_ref[i], 0);
michaelni's avatar
michaelni committed
3116 3117 3118
        h->short_ref[i]= NULL;
    }
    h->short_ref_count=0;
3119
    h->prev_frame_num= 0;
michael's avatar
michael committed
3120 3121 3122
    h->prev_frame_num_offset= 0;
    h->prev_poc_msb=
    h->prev_poc_lsb= 0;
michaelni's avatar
michaelni committed
3123 3124
}

lorenm's avatar
lorenm committed
3125 3126 3127 3128
/* forget old pics after a seek */
static void flush_dpb(AVCodecContext *avctx){
    H264Context *h= avctx->priv_data;
    int i;
3129
    for(i=0; i<MAX_DELAYED_PIC_COUNT; i++) {
lorenm's avatar
lorenm committed
3130 3131
        if(h->delayed_pic[i])
            h->delayed_pic[i]->reference= 0;
lorenm's avatar
lorenm committed
3132
        h->delayed_pic[i]= NULL;
lorenm's avatar
lorenm committed
3133
    }
3134
    h->outputed_poc= INT_MIN;
lorenm's avatar
lorenm committed
3135
    idr(h);
3136 3137
    if(h->s.current_picture_ptr)
        h->s.current_picture_ptr->reference= 0;
3138
    h->s.first_field= 0;
3139
    h->sei_recovery_frame_cnt = -1;
3140
    h->sei_dpb_output_delay = 0;
3141
    h->sei_cpb_removal_delay = -1;
3142
    h->sei_buffering_period_present = 0;
3143
    ff_mpeg_flush(avctx);
lorenm's avatar
lorenm committed
3144 3145
}

michaelni's avatar
michaelni committed
3146
/**
3147 3148 3149 3150 3151 3152
 * 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
michaelni's avatar
michaelni committed
3153
 */
3154
static Picture * find_short(H264Context *h, int frame_num, int *idx){
3155
    MpegEncContext * const s = &h->s;
michaelni's avatar
michaelni committed
3156
    int i;
3157

michaelni's avatar
michaelni committed
3158 3159
    for(i=0; i<h->short_ref_count; i++){
        Picture *pic= h->short_ref[i];
3160
        if(s->avctx->debug&FF_DEBUG_MMCO)
3161
            av_log(h->s.avctx, AV_LOG_DEBUG, "%d %d %p\n", i, pic->frame_num, pic);
3162 3163
        if(pic->frame_num == frame_num) {
            *idx = i;
michaelni's avatar
michaelni committed
3164 3165 3166 3167 3168 3169
            return pic;
        }
    }
    return NULL;
}

3170 3171 3172 3173 3174 3175 3176
/**
 * 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){
3177
    assert(i >= 0 && i < h->short_ref_count);
3178 3179 3180 3181 3182 3183 3184 3185 3186
    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
 */
3187
static Picture * remove_short(H264Context *h, int frame_num, int ref_mask){
3188 3189 3190 3191 3192 3193 3194 3195
    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);
3196 3197
    if (pic){
        if(unreference_pic(h, pic, ref_mask))
3198
        remove_short_at_index(h, i);
3199
    }
3200 3201 3202 3203

    return pic;
}

3204 3205
/**
 * Remove a picture from the long term reference list by its index in
3206
 * that list.
3207
 * @return the removed picture or NULL if an error occurs
michaelni's avatar
michaelni committed
3208
 */
3209
static Picture * remove_long(H264Context *h, int i, int ref_mask){
michaelni's avatar
michaelni committed
3210 3211 3212
    Picture *pic;

    pic= h->long_ref[i];
3213
    if (pic){
3214 3215 3216 3217 3218 3219
        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--;
        }
3220
    }
michaelni's avatar
michaelni committed
3221 3222 3223 3224

    return pic;
}

3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254
/**
 * 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]);
            }
        }
    }
}

michaelni's avatar
michaelni committed
3255 3256 3257 3258 3259
/**
 * 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;
3260
    int i, j;
3261
    int current_ref_assigned=0;
3262
    Picture *av_uninit(pic);
3263

michaelni's avatar
michaelni committed
3264
    if((s->avctx->debug&FF_DEBUG_MMCO) && mmco_count==0)
3265
        av_log(h->s.avctx, AV_LOG_DEBUG, "no mmco here\n");
3266

michaelni's avatar
michaelni committed
3267
    for(i=0; i<mmco_count; i++){
3268
        int structure, av_uninit(frame_num);
michaelni's avatar
michaelni committed
3269
        if(s->avctx->debug&FF_DEBUG_MMCO)
3270
            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);
michaelni's avatar
michaelni committed
3271

3272 3273 3274 3275 3276
        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){
3277 3278
                if(mmco[i].opcode != MMCO_SHORT2LONG || !h->long_ref[mmco[i].long_arg]
                   || h->long_ref[mmco[i].long_arg]->frame_num != frame_num)
3279 3280 3281 3282 3283
                av_log(h->s.avctx, AV_LOG_ERROR, "mmco: unref short failure\n");
                continue;
            }
        }

michaelni's avatar
michaelni committed
3284 3285
        switch(mmco[i].opcode){
        case MMCO_SHORT2UNUSED:
3286 3287
            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);
3288
            remove_short(h, frame_num, structure ^ PICT_FRAME);
michaelni's avatar
michaelni committed
3289 3290
            break;
        case MMCO_SHORT2LONG:
3291 3292
                if (h->long_ref[mmco[i].long_arg] != pic)
                    remove_long(h, mmco[i].long_arg, 0);
3293

3294 3295
                remove_short_at_index(h, j);
                h->long_ref[ mmco[i].long_arg ]= pic;
3296 3297 3298 3299
                if (h->long_ref[ mmco[i].long_arg ]){
                    h->long_ref[ mmco[i].long_arg ]->long_ref=1;
                    h->long_ref_count++;
                }
michaelni's avatar
michaelni committed
3300 3301
            break;
        case MMCO_LONG2UNUSED:
3302 3303 3304
            j = pic_num_extract(h, mmco[i].long_arg, &structure);
            pic = h->long_ref[j];
            if (pic) {
3305
                remove_long(h, j, structure ^ PICT_FRAME);
3306 3307
            } else if(s->avctx->debug&FF_DEBUG_MMCO)
                av_log(h->s.avctx, AV_LOG_DEBUG, "mmco: unref long failure\n");
michaelni's avatar
michaelni committed
3308 3309
            break;
        case MMCO_LONG:
3310
                    // Comment below left from previous code as it is an interresting note.
3311 3312
                    /* First field in pair is in short term list or
                     * at a different long term index.
3313
                     * This is not allowed; see 7.4.3.3, notes 2 and 3.
3314 3315 3316 3317
                     * Report the problem and keep the pair where it is,
                     * and mark this field valid.
                     */

3318
            if (h->long_ref[mmco[i].long_arg] != s->current_picture_ptr) {
3319
                remove_long(h, mmco[i].long_arg, 0);
3320

3321 3322 3323
                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++;
3324
            }
3325

3326
            s->current_picture_ptr->reference |= s->picture_structure;
3327
            current_ref_assigned=1;
michaelni's avatar
michaelni committed
3328 3329
            break;
        case MMCO_SET_MAX_LONG:
3330
            assert(mmco[i].long_arg <= 16);
3331
            // just remove the long term which index is greater than new max
3332
            for(j = mmco[i].long_arg; j<16; j++){
3333
                remove_long(h, j, 0);
michaelni's avatar
michaelni committed
3334 3335 3336 3337
            }
            break;
        case MMCO_RESET:
            while(h->short_ref_count){
3338
                remove_short(h, h->short_ref[0]->frame_num, 0);
michaelni's avatar
michaelni committed
3339
            }
3340
            for(j = 0; j < 16; j++) {
3341
                remove_long(h, j, 0);
michaelni's avatar
michaelni committed
3342
            }
michael's avatar
michael committed
3343 3344 3345 3346 3347 3348
            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=
michael's avatar
michael committed
3349
            s->current_picture_ptr->frame_num= 0;
michaelni's avatar
michaelni committed
3350 3351 3352 3353
            break;
        default: assert(0);
        }
    }
3354

3355
    if (!current_ref_assigned) {
3356 3357 3358 3359
        /* 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
3360
         * error in the encoded bit stream (ref: 7.4.3.3, NOTE 2 and 3).
3361 3362 3363 3364 3365 3366 3367 3368 3369 3370
         */
        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 {
3371
            pic= remove_short(h, s->current_picture_ptr->frame_num, 0);
michael's avatar
michael committed
3372 3373 3374
            if(pic){
                av_log(h->s.avctx, AV_LOG_ERROR, "illegal short term buffer state detected\n");
            }
3375

michael's avatar
michael committed
3376 3377
            if(h->short_ref_count)
                memmove(&h->short_ref[1], &h->short_ref[0], h->short_ref_count*sizeof(Picture*));
3378

michael's avatar
michael committed
3379 3380 3381 3382
            h->short_ref[0]= s->current_picture_ptr;
            h->short_ref_count++;
            s->current_picture_ptr->reference |= s->picture_structure;
        }
michael's avatar
michael committed
3383
    }
3384

3385
    if (h->long_ref_count + h->short_ref_count > h->sps.ref_frame_count){
3386 3387 3388 3389 3390 3391 3392 3393 3394

        /* 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");

michael's avatar
michael committed
3395
        if (h->long_ref_count && !h->short_ref_count) {
3396 3397 3398 3399 3400
            for (i = 0; i < 16; ++i)
                if (h->long_ref[i])
                    break;

            assert(i < 16);
3401
            remove_long(h, i, 0);
3402
        } else {
3403
            pic = h->short_ref[h->short_ref_count - 1];
3404
            remove_short(h, pic->frame_num, 0);
3405 3406 3407
        }
    }

3408 3409
    print_short_term(h);
    print_long_term(h);
3410
    return 0;
michaelni's avatar
michaelni committed
3411 3412
}

3413
static int decode_ref_pic_marking(H264Context *h, GetBitContext *gb){
michaelni's avatar
michaelni committed
3414 3415
    MpegEncContext * const s = &h->s;
    int i;
3416

3417
    h->mmco_index= 0;
michaelni's avatar
michaelni committed
3418
    if(h->nal_unit_type == NAL_IDR_SLICE){ //FIXME fields
3419
        s->broken_link= get_bits1(gb) -1;
3420
        if(get_bits1(gb)){
michaelni's avatar
michaelni committed
3421
            h->mmco[0].opcode= MMCO_LONG;
3422
            h->mmco[0].long_arg= 0;
michaelni's avatar
michaelni committed
3423
            h->mmco_index= 1;
3424
        }
michaelni's avatar
michaelni committed
3425
    }else{
3426
        if(get_bits1(gb)){ // adaptive_ref_pic_marking_mode_flag
3427
            for(i= 0; i<MAX_MMCO_COUNT; i++) {
3428
                MMCOOpcode opcode= get_ue_golomb_31(gb);
michaelni's avatar
michaelni committed
3429 3430 3431

                h->mmco[i].opcode= opcode;
                if(opcode==MMCO_SHORT2UNUSED || opcode==MMCO_SHORT2LONG){
3432
                    h->mmco[i].short_pic_num= (h->curr_pic_num - get_ue_golomb(gb) - 1) & (h->max_pic_num - 1);
3433
/*                    if(h->mmco[i].short_pic_num >= h->short_ref_count || h->short_ref[ h->mmco[i].short_pic_num ] == NULL){
3434
                        av_log(s->avctx, AV_LOG_ERROR, "illegal short ref in memory management control operation %d\n", mmco);
michaelni's avatar
michaelni committed
3435 3436 3437 3438
                        return -1;
                    }*/
                }
                if(opcode==MMCO_SHORT2LONG || opcode==MMCO_LONG2UNUSED || opcode==MMCO_LONG || opcode==MMCO_SET_MAX_LONG){
3439
                    unsigned int long_arg= get_ue_golomb_31(gb);
3440
                    if(long_arg >= 32 || (long_arg >= 16 && !(opcode == MMCO_LONG2UNUSED && FIELD_PICTURE))){
3441
                        av_log(h->s.avctx, AV_LOG_ERROR, "illegal long ref in memory management control operation %d\n", opcode);
michaelni's avatar
michaelni committed
3442 3443
                        return -1;
                    }
3444
                    h->mmco[i].long_arg= long_arg;
michaelni's avatar
michaelni committed
3445
                }
3446

3447
                if(opcode > (unsigned)MMCO_LONG){
3448
                    av_log(h->s.avctx, AV_LOG_ERROR, "illegal memory management control operation %d\n", opcode);
michaelni's avatar
michaelni committed
3449 3450
                    return -1;
                }
3451 3452
                if(opcode == MMCO_END)
                    break;
michaelni's avatar
michaelni committed
3453 3454 3455 3456 3457
            }
            h->mmco_index= i;
        }else{
            assert(h->long_ref_count + h->short_ref_count <= h->sps.ref_frame_count);

3458
            if(h->short_ref_count && h->long_ref_count + h->short_ref_count == h->sps.ref_frame_count &&
3459
                    !(FIELD_PICTURE && !s->first_field && s->current_picture_ptr->reference)) {
michaelni's avatar
michaelni committed
3460
                h->mmco[0].opcode= MMCO_SHORT2UNUSED;
3461
                h->mmco[0].short_pic_num= h->short_ref[ h->short_ref_count - 1 ]->frame_num;
michaelni's avatar
michaelni committed
3462
                h->mmco_index= 1;
3463 3464 3465 3466 3467 3468
                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;
                }
michael's avatar
michael committed
3469
            }
michaelni's avatar
michaelni committed
3470 3471
        }
    }
3472 3473

    return 0;
michaelni's avatar
michaelni committed
3474 3475 3476 3477 3478 3479
}

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];
3480
    Picture *cur = s->current_picture_ptr;
michaelni's avatar
michaelni committed
3481

3482
    h->frame_num_offset= h->prev_frame_num_offset;
3483
    if(h->frame_num < h->prev_frame_num)
3484
        h->frame_num_offset += max_frame_num;
michaelni's avatar
michaelni committed
3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495

    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);
3496
        field_poc[0] =
michaelni's avatar
michaelni committed
3497
        field_poc[1] = h->poc_msb + h->poc_lsb;
3498
        if(s->picture_structure == PICT_FRAME)
michaelni's avatar
michaelni committed
3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510
            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--;
3511

michaelni's avatar
michaelni committed
3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525
        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;

3526
        if(h->nal_ref_idc == 0)
michaelni's avatar
michaelni committed
3527
            expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
3528

michaelni's avatar
michaelni committed
3529 3530 3531 3532 3533 3534
        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{
3535
        int poc= 2*(h->frame_num_offset + h->frame_num);
3536

3537 3538
        if(!h->nal_ref_idc)
            poc--;
3539

michaelni's avatar
michaelni committed
3540 3541 3542
        field_poc[0]= poc;
        field_poc[1]= poc;
    }
3543

3544
    if(s->picture_structure != PICT_BOTTOM_FIELD)
michaelni's avatar
michaelni committed
3545
        s->current_picture_ptr->field_poc[0]= field_poc[0];
3546
    if(s->picture_structure != PICT_TOP_FIELD)
michaelni's avatar
michaelni committed
3547
        s->current_picture_ptr->field_poc[1]= field_poc[1];
3548
    cur->poc= FFMIN(cur->field_poc[0], cur->field_poc[1]);
michaelni's avatar
michaelni committed
3549 3550 3551 3552

    return 0;
}

3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571

/**
 * 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){
3572
        memcpy(h->zigzag_scan8x8,       ff_zigzag_direct,     64*sizeof(uint8_t));
3573 3574 3575 3576 3577 3578
        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)
3579
            h->zigzag_scan8x8[i]       = T(ff_zigzag_direct[i]);
3580 3581 3582 3583 3584 3585 3586 3587
            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;
3588
        h->zigzag_scan8x8_q0       = ff_zigzag_direct;
3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601
        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;
    }
}
3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612

/**
 * 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;
3613
    dst->s.first_field          = src->s.first_field;
3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624

    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));
3625 3626 3627

    memcpy(dst->dequant4_coeff,   src->dequant4_coeff,   sizeof(src->dequant4_coeff));
    memcpy(dst->dequant8_coeff,   src->dequant8_coeff,   sizeof(src->dequant8_coeff));
3628 3629
}

michaelni's avatar
michaelni committed
3630 3631
/**
 * decodes a slice header.
diego's avatar
diego committed
3632
 * This will also call MPV_common_init() and frame_start() as needed.
3633 3634 3635 3636
 *
 * @param h h264context
 * @param h0 h264 master context (differs from 'h' when doing sliced based parallel decoding)
 *
diego's avatar
diego committed
3637
 * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded
michaelni's avatar
michaelni committed
3638
 */
3639
static int decode_slice_header(H264Context *h, H264Context *h0){
michaelni's avatar
michaelni committed
3640
    MpegEncContext * const s = &h->s;
3641
    MpegEncContext * const s0 = &h0->s;
3642
    unsigned int first_mb_in_slice;
3643
    unsigned int pps_id;
michaelni's avatar
michaelni committed
3644
    int num_ref_idx_active_override_flag;
3645
    unsigned int slice_type, tmp, i, j;
3646
    int default_ref_list_done = 0;
3647
    int last_pic_structure;
michaelni's avatar
michaelni committed
3648

3649
    s->dropable= h->nal_ref_idc == 0;
michaelni's avatar
michaelni committed
3650

3651 3652 3653 3654 3655 3656 3657 3658
    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;
    }

michaelni's avatar
michaelni committed
3659 3660
    first_mb_in_slice= get_ue_golomb(&s->gb);

3661
    if((s->flags2 & CODEC_FLAG2_CHUNKS) && first_mb_in_slice == 0){
3662
        h0->current_slice = 0;
3663
        if (!s0->first_field)
andoma's avatar
andoma committed
3664
            s->current_picture_ptr= NULL;
3665 3666
    }

3667
    slice_type= get_ue_golomb_31(&s->gb);
3668
    if(slice_type > 9){
3669
        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);
michael's avatar
michael committed
3670
        return -1;
michaelni's avatar
michaelni committed
3671
    }
3672 3673
    if(slice_type > 4){
        slice_type -= 5;
michaelni's avatar
michaelni committed
3674 3675 3676
        h->slice_type_fixed=1;
    }else
        h->slice_type_fixed=0;
3677

3678
    slice_type= golomb_to_pict_type[ slice_type ];
3679
    if (slice_type == FF_I_TYPE
3680
        || (h0->current_slice != 0 && slice_type == h0->last_slice_type) ) {
3681 3682 3683
        default_ref_list_done = 1;
    }
    h->slice_type= slice_type;
michael's avatar
michael committed
3684
    h->slice_type_nos= slice_type & 3;
3685

diego's avatar
diego committed
3686
    s->pict_type= h->slice_type; // to make a few old functions happy, it's wrong though
3687
    if (s->pict_type == FF_B_TYPE && s0->last_picture_ptr == NULL) {
3688 3689 3690 3691
        av_log(h->s.avctx, AV_LOG_ERROR,
               "B picture before any references, skipping\n");
        return -1;
    }
3692

michaelni's avatar
michaelni committed
3693
    pps_id= get_ue_golomb(&s->gb);
3694
    if(pps_id>=MAX_PPS_COUNT){
3695
        av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
michaelni's avatar
michaelni committed
3696 3697
        return -1;
    }
3698
    if(!h0->pps_buffers[pps_id]) {
diego's avatar
diego committed
3699
        av_log(h->s.avctx, AV_LOG_ERROR, "non-existing PPS referenced\n");
michaelni's avatar
michaelni committed
3700 3701
        return -1;
    }
3702
    h->pps= *h0->pps_buffers[pps_id];
michaelni's avatar
michaelni committed
3703

3704
    if(!h0->sps_buffers[h->pps.sps_id]) {
diego's avatar
diego committed
3705
        av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS referenced\n");
michaelni's avatar
michaelni committed
3706 3707
        return -1;
    }
3708
    h->sps = *h0->sps_buffers[h->pps.sps_id];
lorenm's avatar
lorenm committed
3709

3710
    if(h == h0 && h->dequant_coeff_pps != pps_id){
3711
        h->dequant_coeff_pps = pps_id;
lorenm's avatar
lorenm committed
3712 3713
        init_dequant_tables(h);
    }
3714

michaelni's avatar
michaelni committed
3715
    s->mb_width= h->sps.mb_width;
3716
    s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
3717

3718 3719
    h->b_stride=  s->mb_width*4;
    h->b8_stride= s->mb_width*2;
michaelni's avatar
michaelni committed
3720

3721
    s->width = 16*s->mb_width - 2*FFMIN(h->sps.crop_right, 7);
michaelni's avatar
michaelni committed
3722
    if(h->sps.frame_mbs_only_flag)
3723
        s->height= 16*s->mb_height - 2*FFMIN(h->sps.crop_bottom, 7);
michaelni's avatar
michaelni committed
3724
    else
3725
        s->height= 16*s->mb_height - 4*FFMIN(h->sps.crop_bottom, 3);
3726 3727

    if (s->context_initialized
michael's avatar
michael committed
3728
        && (   s->width != s->avctx->width || s->height != s->avctx->height)) {
3729 3730
        if(h != h0)
            return -1;   // width / height changed during parallelized decoding
michaelni's avatar
michaelni committed
3731
        free_tables(h);
3732
        flush_dpb(s->avctx);
michaelni's avatar
michaelni committed
3733 3734 3735
        MPV_common_end(s);
    }
    if (!s->context_initialized) {
3736 3737
        if(h != h0)
            return -1;  // we cant (re-)initialize context during parallel decoding
michaelni's avatar
michaelni committed
3738 3739
        if (MPV_common_init(s) < 0)
            return -1;
3740
        s->first_field = 0;
3741

3742
        init_scan_tables(h);
michaelni's avatar
michaelni committed
3743 3744
        alloc_tables(h);

3745 3746 3747
        for(i = 1; i < s->avctx->thread_count; i++) {
            H264Context *c;
            c = h->thread_context[i] = av_malloc(sizeof(H264Context));
3748
            memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext));
3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759
            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;

michaelni's avatar
michaelni committed
3760 3761
        s->avctx->width = s->width;
        s->avctx->height = s->height;
michael's avatar
michael committed
3762
        s->avctx->sample_aspect_ratio= h->sps.sar;
michael's avatar
michael committed
3763 3764
        if(!s->avctx->sample_aspect_ratio.den)
            s->avctx->sample_aspect_ratio.den = 1;
3765

michael's avatar
michael committed
3766
        if(h->sps.timing_info_present_flag){
3767
            s->avctx->time_base= (AVRational){h->sps.num_units_in_tick * 2, h->sps.time_scale};
3768 3769 3770 3771
            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);
3772
        }
michaelni's avatar
michaelni committed
3773 3774 3775 3776
    }

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

lorenm's avatar
lorenm committed
3777
    h->mb_mbaff = 0;
3778
    h->mb_aff_frame = 0;
3779
    last_pic_structure = s0->picture_structure;
michaelni's avatar
michaelni committed
3780 3781 3782
    if(h->sps.frame_mbs_only_flag){
        s->picture_structure= PICT_FRAME;
    }else{
3783
        if(get_bits1(&s->gb)) { //field_pic_flag
michaelni's avatar
michaelni committed
3784
            s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
3785
        } else {
michaelni's avatar
michaelni committed
3786
            s->picture_structure= PICT_FRAME;
3787
            h->mb_aff_frame = h->sps.mb_aff;
3788
        }
michaelni's avatar
michaelni committed
3789
    }
3790
    h->mb_field_decoding_flag= s->picture_structure != PICT_FRAME;
3791 3792

    if(h0->current_slice == 0){
michael's avatar
michael committed
3793 3794 3795
        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);
3796 3797
            if (frame_start(h) < 0)
                return -1;
michael's avatar
michael committed
3798 3799 3800 3801 3802 3803
            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);
        }

3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828 3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845
        /* 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;
3846
            return -1;
3847
        }
3848 3849 3850 3851 3852 3853
    }
    if(h != h0)
        clone_slice(h, h0);

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

3854
    assert(s->mb_num == s->mb_width * s->mb_height);
3855
    if(first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num ||
3856 3857
       first_mb_in_slice                    >= s->mb_num){
        av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
michael's avatar
michael committed
3858 3859
        return -1;
    }
3860
    s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
3861 3862 3863
    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;
3864
    assert(s->mb_y < s->mb_height);
3865

michaelni's avatar
michaelni committed
3866 3867 3868 3869
    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{
3870
        h->curr_pic_num= 2*h->frame_num + 1;
michaelni's avatar
michaelni committed
3871 3872
        h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
    }
3873

michaelni's avatar
michaelni committed
3874
    if(h->nal_unit_type == NAL_IDR_SLICE){
bellard's avatar
bellard committed
3875
        get_ue_golomb(&s->gb); /* idr_pic_id */
michaelni's avatar
michaelni committed
3876
    }
3877

michaelni's avatar
michaelni committed
3878 3879
    if(h->sps.poc_type==0){
        h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
3880

michaelni's avatar
michaelni committed
3881 3882 3883 3884
        if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
            h->delta_poc_bottom= get_se_golomb(&s->gb);
        }
    }
3885

michaelni's avatar
michaelni committed
3886 3887
    if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
        h->delta_poc[0]= get_se_golomb(&s->gb);
3888

michaelni's avatar
michaelni committed
3889 3890 3891
        if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
            h->delta_poc[1]= get_se_golomb(&s->gb);
    }
3892

michaelni's avatar
michaelni committed
3893
    init_poc(h);
3894

michaelni's avatar
michaelni committed
3895 3896 3897 3898
    if(h->pps.redundant_pic_cnt_present){
        h->redundant_pic_count= get_ue_golomb(&s->gb);
    }

diego's avatar
diego committed
3899
    //set defaults, might be overridden a few lines later
michaelni's avatar
michaelni committed
3900 3901 3902
    h->ref_count[0]= h->pps.ref_count[0];
    h->ref_count[1]= h->pps.ref_count[1];

michael's avatar
michael committed
3903
    if(h->slice_type_nos != FF_I_TYPE){
3904
        if(h->slice_type_nos == FF_B_TYPE){
michaelni's avatar
michaelni committed
3905 3906 3907
            h->direct_spatial_mv_pred= get_bits1(&s->gb);
        }
        num_ref_idx_active_override_flag= get_bits1(&s->gb);
3908

michaelni's avatar
michaelni committed
3909 3910
        if(num_ref_idx_active_override_flag){
            h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
3911
            if(h->slice_type_nos==FF_B_TYPE)
michaelni's avatar
michaelni committed
3912 3913
                h->ref_count[1]= get_ue_golomb(&s->gb) + 1;

michael's avatar
michael committed
3914
            if(h->ref_count[0]-1 > 32-1 || h->ref_count[1]-1 > 32-1){
3915
                av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
3916
                h->ref_count[0]= h->ref_count[1]= 1;
michaelni's avatar
michaelni committed
3917 3918 3919
                return -1;
            }
        }
3920
        if(h->slice_type_nos == FF_B_TYPE)
michael's avatar
michael committed
3921 3922 3923 3924 3925
            h->list_count= 2;
        else
            h->list_count= 1;
    }else
        h->list_count= 0;
michaelni's avatar
michaelni committed
3926

3927
    if(!default_ref_list_done){
michaelni's avatar
michaelni committed
3928 3929 3930
        fill_default_ref_list(h);
    }

3931
    if(h->slice_type_nos!=FF_I_TYPE && decode_ref_pic_list_reordering(h) < 0)
3932
        return -1;
michaelni's avatar
michaelni committed
3933

3934 3935
    if(h->slice_type_nos!=FF_I_TYPE){
        s->last_picture_ptr= &h->ref_list[0][0];
3936
        ff_copy_picture(&s->last_picture, s->last_picture_ptr);
3937 3938 3939
    }
    if(h->slice_type_nos==FF_B_TYPE){
        s->next_picture_ptr= &h->ref_list[1][0];
3940
        ff_copy_picture(&s->next_picture, s->next_picture_ptr);
3941 3942
    }

michael's avatar
michael committed
3943
    if(   (h->pps.weighted_pred          && h->slice_type_nos == FF_P_TYPE )
3944
       ||  (h->pps.weighted_bipred_idc==1 && h->slice_type_nos== FF_B_TYPE ) )
michaelni's avatar
michaelni committed
3945
        pred_weight_table(h);
3946
    else if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE)
lorenm's avatar
lorenm committed
3947
        implicit_weight_table(h);
3948
    else {
lorenm's avatar
lorenm committed
3949
        h->use_weight = 0;
3950 3951 3952 3953 3954
        for (i = 0; i < 2; i++) {
            h->luma_weight_flag[i]   = 0;
            h->chroma_weight_flag[i] = 0;
        }
    }
3955

3956
    if(h->nal_ref_idc)
3957
        decode_ref_pic_marking(h0, &s->gb);
michaelni's avatar
michaelni committed
3958

lorenm's avatar
lorenm committed
3959 3960 3961
    if(FRAME_MBAFF)
        fill_mbaff_ref_list(h);

3962 3963 3964 3965
    if(h->slice_type_nos==FF_B_TYPE && !h->direct_spatial_mv_pred)
        direct_dist_scale_factor(h);
    direct_ref_list_init(h);

michael's avatar
michael committed
3966
    if( h->slice_type_nos != FF_I_TYPE && h->pps.cabac ){
3967
        tmp = get_ue_golomb_31(&s->gb);
3968 3969 3970 3971 3972 3973
        if(tmp > 2){
            av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
            return -1;
        }
        h->cabac_init_idc= tmp;
    }
3974 3975

    h->last_qscale_diff = 0;
3976 3977 3978
    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);
michael's avatar
michael committed
3979 3980
        return -1;
    }
3981
    s->qscale= tmp;
3982 3983
    h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
    h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
michaelni's avatar
michaelni committed
3984
    //FIXME qscale / qp ... stuff
3985
    if(h->slice_type == FF_SP_TYPE){
bellard's avatar
bellard committed
3986
        get_bits1(&s->gb); /* sp_for_switch_flag */
michaelni's avatar
michaelni committed
3987
    }
3988
    if(h->slice_type==FF_SP_TYPE || h->slice_type == FF_SI_TYPE){
bellard's avatar
bellard committed
3989
        get_se_golomb(&s->gb); /* slice_qs_delta */
michaelni's avatar
michaelni committed
3990 3991
    }

3992
    h->deblocking_filter = 1;
michael's avatar
michael committed
3993 3994
    h->slice_alpha_c0_offset = 0;
    h->slice_beta_offset = 0;
michaelni's avatar
michaelni committed
3995
    if( h->pps.deblocking_filter_parameters_present ) {
3996
        tmp= get_ue_golomb_31(&s->gb);
3997 3998 3999 4000 4001
        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;
4002
        if(h->deblocking_filter < 2)
4003 4004 4005
            h->deblocking_filter^= 1; // 1<->0

        if( h->deblocking_filter ) {
4006 4007
            h->slice_alpha_c0_offset = get_se_golomb(&s->gb) << 1;
            h->slice_beta_offset = get_se_golomb(&s->gb) << 1;
michaelni's avatar
michaelni committed
4008
        }
4009
    }
4010

4011
    if(   s->avctx->skip_loop_filter >= AVDISCARD_ALL
4012
       ||(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY && h->slice_type_nos != FF_I_TYPE)
4013
       ||(s->avctx->skip_loop_filter >= AVDISCARD_BIDIR  && h->slice_type_nos == FF_B_TYPE)
4014 4015 4016
       ||(s->avctx->skip_loop_filter >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
        h->deblocking_filter= 0;

4017
    if(h->deblocking_filter == 1 && h0->max_contexts > 1) {
4018 4019
        if(s->avctx->flags2 & CODEC_FLAG2_FAST) {
            /* Cheat slightly for speed:
diego's avatar
diego committed
4020
               Do not bother to deblock across slices. */
4021 4022
            h->deblocking_filter = 2;
        } else {
benoit's avatar
benoit committed
4023 4024 4025 4026 4027 4028 4029
            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
4030
        }
4031 4032
    }

michaelni's avatar
michaelni committed
4033 4034 4035 4036 4037
#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

4038 4039
    h0->last_slice_type = slice_type;
    h->slice_num = ++h0->current_slice;
4040 4041 4042
    if(h->slice_num >= MAX_SLICES){
        av_log(s->avctx, AV_LOG_ERROR, "Too many slices, increase MAX_SLICES and recompile\n");
    }
michael's avatar
michael committed
4043

4044
    for(j=0; j<2; j++){
4045
        int *ref2frm= h->ref2frm[h->slice_num&(MAX_SLICES-1)][j];
4046 4047
        ref2frm[0]=
        ref2frm[1]= -1;
4048
        for(i=0; i<16; i++)
4049 4050
            ref2frm[i+2]= 4*h->ref_list[j][i].frame_num
                          +(h->ref_list[j][i].reference&3);
4051 4052 4053 4054 4055
        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);
4056 4057
    }

lorenm's avatar
lorenm committed
4058
    h->emu_edge_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16;
4059
    h->emu_edge_height= (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width;
lorenm's avatar
lorenm committed
4060

michael's avatar
michael committed
4061 4062
    s->avctx->refs= h->sps.ref_frame_count;

michaelni's avatar
michaelni committed
4063
    if(s->avctx->debug&FF_DEBUG_PICT_INFO){
4064
        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",
4065 4066
               h->slice_num,
               (s->picture_structure==PICT_FRAME ? "F" : s->picture_structure==PICT_TOP_FIELD ? "T" : "B"),
4067
               first_mb_in_slice,
4068
               av_get_pict_type_char(h->slice_type), h->slice_type_fixed ? " fix" : "", h->nal_unit_type == NAL_IDR_SLICE ? " IDR" : "",
michaelni's avatar
michaelni committed
4069 4070 4071 4072
               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,
4073
               h->deblocking_filter, h->slice_alpha_c0_offset/2, h->slice_beta_offset/2,
lorenm's avatar
lorenm committed
4074
               h->use_weight,
michael's avatar
michael committed
4075 4076
               h->use_weight==1 && h->use_weight_chroma ? "c" : "",
               h->slice_type == FF_B_TYPE ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : ""
michaelni's avatar
michaelni committed
4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088
               );
    }

    return 0;
}

/**
 *
 */
static inline int get_level_prefix(GetBitContext *gb){
    unsigned int buf;
    int log;
4089

michaelni's avatar
michaelni committed
4090 4091 4092
    OPEN_READER(re, gb);
    UPDATE_CACHE(re, gb);
    buf=GET_CACHE(re, gb);
4093

michaelni's avatar
michaelni committed
4094 4095 4096
    log= 32 - av_log2(buf);
#ifdef TRACE
    print_bin(buf>>(32-log), log);
4097
    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__);
michaelni's avatar
michaelni committed
4098 4099 4100 4101 4102 4103 4104 4105
#endif

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

    return log-1;
}

lorenm's avatar
lorenm committed
4106
static inline int get_dct8x8_allowed(H264Context *h){
michael's avatar
michael committed
4107 4108 4109 4110
    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));
lorenm's avatar
lorenm committed
4111 4112
}

michaelni's avatar
michaelni committed
4113 4114 4115 4116 4117
/**
 * decodes a residual block.
 * @param n block index
 * @param scantable scantable
 * @param max_coeff number of coefficients in the block
diego's avatar
diego committed
4118
 * @return <0 if an error occurred
michaelni's avatar
michaelni committed
4119
 */
lorenm's avatar
lorenm committed
4120
static int decode_residual(H264Context *h, GetBitContext *gb, DCTELEM *block, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff){
michaelni's avatar
michaelni committed
4121 4122
    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};
lorenm's avatar
lorenm committed
4123 4124
    int level[16];
    int zeros_left, coeff_num, coeff_token, total_coeff, i, j, trailing_ones, run_before;
michaelni's avatar
michaelni committed
4125 4126 4127 4128 4129 4130

    //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;
4131
    }else{
michaelni's avatar
michaelni committed
4132 4133 4134 4135 4136 4137 4138 4139 4140 4141 4142 4143 4144 4145 4146 4147
        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;
4148 4149
    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);
4150 4151
        return -1;
    }
4152

michaelni's avatar
michaelni committed
4153
    trailing_ones= coeff_token&3;
mbardiaux's avatar
mbardiaux committed
4154
    tprintf(h->s.avctx, "trailing:%d, total:%d\n", trailing_ones, total_coeff);
michaelni's avatar
michaelni committed
4155
    assert(total_coeff<=16);
4156

4157 4158 4159 4160 4161
    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);
michaelni's avatar
michaelni committed
4162

4163
    if(trailing_ones<total_coeff) {
4164
        int mask, prefix;
lorenm's avatar
lorenm committed
4165
        int suffix_length = total_coeff > 10 && trailing_ones < 3;
4166 4167 4168 4169 4170 4171 4172 4173
        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);
michaelni's avatar
michaelni committed
4174

michael's avatar
michael committed
4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191
            //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)
                    level_code= (prefix<<suffix_length) + get_bits(gb, suffix_length); //part
                else
                    level_code= (prefix<<suffix_length); //part
            }else if(prefix==14){
                if(suffix_length)
                    level_code= (prefix<<suffix_length) + get_bits(gb, suffix_length); //part
                else
                    level_code= prefix + get_bits(gb, 4); //part
            }else{
                level_code= (15<<suffix_length) + get_bits(gb, prefix-3); //part
                if(suffix_length==0) level_code+=15; //FIXME doesn't make (much)sense
                if(prefix>=16)
                    level_code += (1<<(prefix-3))-4096;
            }
michaelni's avatar
michaelni committed
4192

michael's avatar
michael committed
4193
            if(trailing_ones < 3) level_code += 2;
michaelni's avatar
michaelni committed
4194

michael's avatar
michael committed
4195 4196 4197
            suffix_length = 2;
            mask= -(level_code&1);
            level[trailing_ones]= (((2+level_code)>>1) ^ mask) - mask;
4198 4199 4200 4201 4202 4203 4204 4205
        }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;
        }
lorenm's avatar
lorenm committed
4206 4207

        //remaining coefficients have suffix_length > 0
4208
        for(i=trailing_ones+1;i<total_coeff;i++) {
michael's avatar
michael committed
4209 4210 4211 4212 4213 4214 4215 4216 4217 4218
            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);
                }
michael's avatar
michael committed
4219 4220 4221 4222 4223 4224 4225 4226
                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);
michael's avatar
michael committed
4227 4228 4229 4230 4231
                level_code= (((2+level_code)>>1) ^ mask) - mask;
            }
            level[i]= level_code;

            if(suffix_limit[suffix_length] + level_code > 2U*suffix_limit[suffix_length])
lorenm's avatar
lorenm committed
4232 4233
                suffix_length++;
        }
michaelni's avatar
michaelni committed
4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244
    }

    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);
    }

lorenm's avatar
lorenm committed
4245 4246
    coeff_num = zeros_left + total_coeff - 1;
    j = scantable[coeff_num];
michaelni's avatar
michaelni committed
4247
    if(n > 24){
lorenm's avatar
lorenm committed
4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258
        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;
michaelni's avatar
michaelni committed
4259 4260 4261 4262 4263
            j= scantable[ coeff_num ];

            block[j]= level[i];
        }
    }else{
lorenm's avatar
lorenm committed
4264
        block[j] = (level[0] * qmul[j] + 32)>>6;
lorenm's avatar
lorenm committed
4265 4266 4267 4268 4269 4270 4271 4272 4273 4274
        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;
michaelni's avatar
michaelni committed
4275 4276
            j= scantable[ coeff_num ];

lorenm's avatar
lorenm committed
4277
            block[j]= (level[i] * qmul[j] + 32)>>6;
michaelni's avatar
michaelni committed
4278 4279
        }
    }
lorenm's avatar
lorenm committed
4280 4281 4282 4283 4284 4285

    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;
    }

michaelni's avatar
michaelni committed
4286 4287 4288
    return 0;
}

lorenm's avatar
lorenm committed
4289 4290
static void predict_field_decoding_flag(H264Context *h){
    MpegEncContext * const s = &h->s;
4291
    const int mb_xy= h->mb_xy;
lorenm's avatar
lorenm committed
4292 4293 4294 4295 4296 4297 4298 4299
    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;
}

4300 4301 4302 4303 4304
/**
 * decodes a P_SKIP or B_SKIP macroblock
 */
static void decode_mb_skip(H264Context *h){
    MpegEncContext * const s = &h->s;
4305
    const int mb_xy= h->mb_xy;
4306
    int mb_type=0;
4307

4308 4309 4310
    memset(h->non_zero_count[mb_xy], 0, 16);
    memset(h->non_zero_count_cache + 8, 0, 8*5); //FIXME ugly, remove pfui

lorenm's avatar
lorenm committed
4311
    if(MB_FIELD)
4312
        mb_type|= MB_TYPE_INTERLACED;
4313

4314
    if( h->slice_type_nos == FF_B_TYPE )
4315 4316
    {
        // just for fill_caches. pred_direct_motion will set the real mb_type
4317
        mb_type|= MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2|MB_TYPE_SKIP;
4318

michael's avatar
michael committed
4319
        fill_caches(h, mb_type, 0); //FIXME check what is needed and what not ...
4320
        pred_direct_motion(h, &mb_type);
4321
        mb_type|= MB_TYPE_SKIP;
4322 4323 4324 4325
    }
    else
    {
        int mx, my;
4326
        mb_type|= MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P1L0|MB_TYPE_SKIP;
4327

michael's avatar
michael committed
4328
        fill_caches(h, mb_type, 0); //FIXME check what is needed and what not ...
4329 4330 4331 4332 4333 4334
        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);
4335
    s->current_picture.mb_type[mb_xy]= mb_type;
4336 4337
    s->current_picture.qscale_table[mb_xy]= s->qscale;
    h->slice_table[ mb_xy ]= h->slice_num;
4338
    h->prev_mb_skipped= 1;
4339 4340
}

michaelni's avatar
michaelni committed
4341 4342
/**
 * decodes a macroblock
diego's avatar
diego committed
4343
 * @returns 0 if OK, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed
michaelni's avatar
michaelni committed
4344
 */
4345
static int decode_mb_cavlc(H264Context *h){
michaelni's avatar
michaelni committed
4346
    MpegEncContext * const s = &h->s;
4347
    int mb_xy;
4348 4349
    int partition_count;
    unsigned int mb_type, cbp;
lorenm's avatar
lorenm committed
4350
    int dct8x8_allowed= h->pps.transform_8x8_mode;
michaelni's avatar
michaelni committed
4351

4352 4353
    mb_xy = h->mb_xy = s->mb_x + s->mb_y*s->mb_stride;

mbardiaux's avatar
mbardiaux committed
4354
    tprintf(s->avctx, "pic:%d mb:%d/%d\n", h->frame_num, s->mb_x, s->mb_y);
bellard's avatar
bellard committed
4355 4356
    cbp = 0; /* avoid warning. FIXME: find a solution without slowing
                down the code */
michael's avatar
michael committed
4357
    if(h->slice_type_nos != FF_I_TYPE){
michaelni's avatar
michaelni committed
4358 4359
        if(s->mb_skip_run==-1)
            s->mb_skip_run= get_ue_golomb(&s->gb);
4360

michaelni's avatar
michaelni committed
4361
        if (s->mb_skip_run--) {
lorenm's avatar
lorenm committed
4362 4363 4364 4365 4366 4367
            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);
            }
4368
            decode_mb_skip(h);
michaelni's avatar
michaelni committed
4369 4370 4371
            return 0;
        }
    }
lorenm's avatar
lorenm committed
4372 4373 4374
    if(FRAME_MBAFF){
        if( (s->mb_y&1) == 0 )
            h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&s->gb);
4375
    }
4376

4377
    h->prev_mb_skipped= 0;
4378

michaelni's avatar
michaelni committed
4379
    mb_type= get_ue_golomb(&s->gb);
4380
    if(h->slice_type_nos == FF_B_TYPE){
michaelni's avatar
michaelni committed
4381 4382 4383 4384 4385 4386 4387
        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;
        }
4388
    }else if(h->slice_type_nos == FF_P_TYPE){
michaelni's avatar
michaelni committed
4389 4390 4391 4392 4393 4394 4395 4396
        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{
4397 4398 4399
       assert(h->slice_type_nos == FF_I_TYPE);
        if(h->slice_type == FF_SI_TYPE && mb_type)
            mb_type--;
michaelni's avatar
michaelni committed
4400 4401
decode_intra_mb:
        if(mb_type > 25){
diego's avatar
diego committed
4402
            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);
michaelni's avatar
michaelni committed
4403 4404 4405 4406 4407 4408 4409 4410
            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;
    }

lorenm's avatar
lorenm committed
4411
    if(MB_FIELD)
michaelni's avatar
michaelni committed
4412 4413 4414
        mb_type |= MB_TYPE_INTERLACED;

    h->slice_table[ mb_xy ]= h->slice_num;
4415

michaelni's avatar
michaelni committed
4416
    if(IS_INTRA_PCM(mb_type)){
michael's avatar
michael committed
4417
        unsigned int x;
4418

diego's avatar
diego committed
4419
        // We assume these blocks are very rare so we do not optimize it.
michaelni's avatar
michaelni committed
4420
        align_get_bits(&s->gb);
4421

4422
        // The pixels are stored in the same order as levels in h->mb array.
michael's avatar
michael committed
4423 4424
        for(x=0; x < (CHROMA ? 384 : 256); x++){
            ((uint8_t*)h->mb)[x]= get_bits(&s->gb, 8);
michaelni's avatar
michaelni committed
4425
        }
4426

4427
        // In deblocking, the quantizer is 0
4428
        s->current_picture.qscale_table[mb_xy]= 0;
4429
        // All coeffs are present
4430
        memset(h->non_zero_count[mb_xy], 16, 16);
4431

lorenm's avatar
lorenm committed
4432
        s->current_picture.mb_type[mb_xy]= mb_type;
michaelni's avatar
michaelni committed
4433 4434
        return 0;
    }
4435

lorenm's avatar
lorenm committed
4436 4437 4438 4439 4440
    if(MB_MBAFF){
        h->ref_count[0] <<= 1;
        h->ref_count[1] <<= 1;
    }

michael's avatar
michael committed
4441
    fill_caches(h, mb_type, 0);
michaelni's avatar
michaelni committed
4442 4443 4444

    //mb_pred
    if(IS_INTRA(mb_type)){
michael's avatar
michael committed
4445
        int pred_mode;
michaelni's avatar
michaelni committed
4446
//            init_top_left_availability(h);
michael's avatar
michael committed
4447 4448 4449 4450 4451 4452 4453
        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
4454 4455

//                fill_intra4x4_pred_table(h);
michael's avatar
michael committed
4456 4457
            for(i=0; i<16; i+=di){
                int mode= pred_intra_mode(h, i);
michaelni's avatar
michaelni committed
4458

michael's avatar
michael committed
4459 4460 4461
                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
4462
                }
michael's avatar
michael committed
4463 4464 4465 4466 4467

                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
4468
            }
michael's avatar
michael committed
4469 4470 4471 4472 4473 4474 4475 4476 4477
            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){
4478
            pred_mode= check_intra_pred_mode(h, get_ue_golomb_31(&s->gb));
4479
            if(pred_mode < 0)
michaelni's avatar
michaelni committed
4480
                return -1;
4481
            h->chroma_pred_mode= pred_mode;
michael's avatar
michael committed
4482
        }
michaelni's avatar
michaelni committed
4483 4484
    }else if(partition_count==4){
        int i, j, sub_partition_count[4], list, ref[2][4];
4485

4486
        if(h->slice_type_nos == FF_B_TYPE){
michaelni's avatar
michaelni committed
4487
            for(i=0; i<4; i++){
4488
                h->sub_mb_type[i]= get_ue_golomb_31(&s->gb);
michaelni's avatar
michaelni committed
4489
                if(h->sub_mb_type[i] >=13){
4490
                    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);
michaelni's avatar
michaelni committed
4491 4492 4493 4494 4495
                    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;
            }
4496
            if(   IS_DIRECT(h->sub_mb_type[0]) || IS_DIRECT(h->sub_mb_type[1])
4497
               || IS_DIRECT(h->sub_mb_type[2]) || IS_DIRECT(h->sub_mb_type[3])) {
4498
                pred_direct_motion(h, &mb_type);
4499 4500 4501 4502 4503
                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
4504
        }else{
michael's avatar
michael committed
4505
            assert(h->slice_type_nos == FF_P_TYPE); //FIXME SP correct ?
michaelni's avatar
michaelni committed
4506
            for(i=0; i<4; i++){
4507
                h->sub_mb_type[i]= get_ue_golomb_31(&s->gb);
michaelni's avatar
michaelni committed
4508
                if(h->sub_mb_type[i] >=4){
4509
                    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);
michaelni's avatar
michaelni committed
4510 4511 4512 4513 4514 4515
                    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;
            }
        }
4516

4517
        for(list=0; list<h->list_count; list++){
4518
            int ref_count= IS_REF0(mb_type) ? 1 : h->ref_count[list];
michaelni's avatar
michaelni committed
4519
            for(i=0; i<4; i++){
4520 4521
                if(IS_DIRECT(h->sub_mb_type[i])) continue;
                if(IS_DIR(h->sub_mb_type[i], 0, list)){
4522 4523 4524 4525 4526 4527 4528
                    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);
michael's avatar
michael committed
4529 4530 4531 4532
                        if(tmp>=ref_count){
                            av_log(h->s.avctx, AV_LOG_ERROR, "ref %u overflow\n", tmp);
                            return -1;
                        }
4533
                    }
4534
                    ref[list][i]= tmp;
michaelni's avatar
michaelni committed
4535 4536 4537 4538 4539 4540
                }else{
                 //FIXME
                    ref[list][i] = -1;
                }
            }
        }
4541

lorenm's avatar
lorenm committed
4542 4543
        if(dct8x8_allowed)
            dct8x8_allowed = get_dct8x8_allowed(h);
4544

4545
        for(list=0; list<h->list_count; list++){
michaelni's avatar
michaelni committed
4546
            for(i=0; i<4; i++){
4547 4548 4549 4550
                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
4551 4552 4553
                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];

4554
                if(IS_DIR(h->sub_mb_type[i], 0, list)){
michaelni's avatar
michaelni committed
4555 4556 4557 4558 4559 4560 4561 4562 4563
                    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);
mbardiaux's avatar
mbardiaux committed
4564
                        tprintf(s->avctx, "final mv:%d %d\n", mx, my);
4565

michaelni's avatar
michaelni committed
4566
                        if(IS_SUB_8X8(sub_mb_type)){
4567
                            mv_cache[ 1 ][0]=
michaelni's avatar
michaelni committed
4568
                            mv_cache[ 8 ][0]= mv_cache[ 9 ][0]= mx;
4569
                            mv_cache[ 1 ][1]=
michaelni's avatar
michaelni committed
4570 4571
                            mv_cache[ 8 ][1]= mv_cache[ 9 ][1]= my;
                        }else if(IS_SUB_8X4(sub_mb_type)){
4572 4573
                            mv_cache[ 1 ][0]= mx;
                            mv_cache[ 1 ][1]= my;
michaelni's avatar
michaelni committed
4574
                        }else if(IS_SUB_4X8(sub_mb_type)){
4575 4576
                            mv_cache[ 8 ][0]= mx;
                            mv_cache[ 8 ][1]= my;
michaelni's avatar
michaelni committed
4577
                        }
4578 4579
                        mv_cache[ 0 ][0]= mx;
                        mv_cache[ 0 ][1]= my;
michaelni's avatar
michaelni committed
4580 4581 4582 4583 4584 4585 4586 4587
                    }
                }else{
                    uint32_t *p= (uint32_t *)&h->mv_cache[list][ scan8[4*i] ][0];
                    p[0] = p[1]=
                    p[8] = p[9]= 0;
                }
            }
        }
4588 4589
    }else if(IS_DIRECT(mb_type)){
        pred_direct_motion(h, &mb_type);
lorenm's avatar
lorenm committed
4590
        dct8x8_allowed &= h->sps.direct_8x8_inference_flag;
4591
    }else{
michaelni's avatar
michaelni committed
4592 4593 4594
        int list, mx, my, i;
         //FIXME we should set ref_idx_l? to 0 if we use that later ...
        if(IS_16X16(mb_type)){
michael's avatar
michael committed
4595 4596
            for(list=0; list<h->list_count; list++){
                    unsigned int val;
michaelni's avatar
michaelni committed
4597
                    if(IS_DIR(mb_type, 0, list)){
4598 4599 4600 4601 4602
                        if(h->ref_count[list]==1){
                            val= 0;
                        }else if(h->ref_count[list]==2){
                            val= get_bits1(&s->gb)^1;
                        }else{
michael's avatar
michael committed
4603 4604 4605 4606 4607
                            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;
                            }
4608
                        }
lorenm's avatar
lorenm committed
4609
                    }else
michael's avatar
michael committed
4610 4611
                        val= LIST_NOT_USED&0xFF;
                    fill_rectangle(&h->ref_cache[list][ scan8[0] ], 4, 4, 8, val, 1);
michaelni's avatar
michaelni committed
4612
            }
michael's avatar
michael committed
4613 4614
            for(list=0; list<h->list_count; list++){
                unsigned int val;
michaelni's avatar
michaelni committed
4615 4616 4617 4618
                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);
mbardiaux's avatar
mbardiaux committed
4619
                    tprintf(s->avctx, "final mv:%d %d\n", mx, my);
4620

michael's avatar
michael committed
4621
                    val= pack16to32(mx,my);
lorenm's avatar
lorenm committed
4622
                }else
michael's avatar
michael committed
4623 4624
                    val=0;
                fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, val, 4);
michaelni's avatar
michaelni committed
4625 4626 4627
            }
        }
        else if(IS_16X8(mb_type)){
michael's avatar
michael committed
4628
            for(list=0; list<h->list_count; list++){
michaelni's avatar
michaelni committed
4629
                    for(i=0; i<2; i++){
michael's avatar
michael committed
4630
                        unsigned int val;
michaelni's avatar
michaelni committed
4631
                        if(IS_DIR(mb_type, i, list)){
4632 4633 4634 4635 4636
                            if(h->ref_count[list] == 1){
                                val= 0;
                            }else if(h->ref_count[list] == 2){
                                val= get_bits1(&s->gb)^1;
                            }else{
michael's avatar
michael committed
4637 4638 4639 4640 4641
                                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;
                                }
4642
                            }
lorenm's avatar
lorenm committed
4643
                        }else
michael's avatar
michael committed
4644 4645
                            val= LIST_NOT_USED&0xFF;
                        fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, val, 1);
michaelni's avatar
michaelni committed
4646 4647
                    }
            }
michael's avatar
michael committed
4648
            for(list=0; list<h->list_count; list++){
michaelni's avatar
michaelni committed
4649
                for(i=0; i<2; i++){
michael's avatar
michael committed
4650
                    unsigned int val;
michaelni's avatar
michaelni committed
4651 4652 4653 4654
                    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);
mbardiaux's avatar
mbardiaux committed
4655
                        tprintf(s->avctx, "final mv:%d %d\n", mx, my);
4656

michael's avatar
michael committed
4657
                        val= pack16to32(mx,my);
4658
                    }else
michael's avatar
michael committed
4659 4660
                        val=0;
                    fill_rectangle(h->mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, val, 4);
michaelni's avatar
michaelni committed
4661 4662 4663 4664
                }
            }
        }else{
            assert(IS_8X16(mb_type));
michael's avatar
michael committed
4665
            for(list=0; list<h->list_count; list++){
michaelni's avatar
michaelni committed
4666
                    for(i=0; i<2; i++){
michael's avatar
michael committed
4667
                        unsigned int val;
michaelni's avatar
michaelni committed
4668
                        if(IS_DIR(mb_type, i, list)){ //FIXME optimize
4669 4670 4671 4672 4673
                            if(h->ref_count[list]==1){
                                val= 0;
                            }else if(h->ref_count[list]==2){
                                val= get_bits1(&s->gb)^1;
                            }else{
michael's avatar
michael committed
4674 4675 4676 4677 4678
                                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;
                                }
4679
                            }
lorenm's avatar
lorenm committed
4680
                        }else
michael's avatar
michael committed
4681 4682
                            val= LIST_NOT_USED&0xFF;
                        fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, val, 1);
michaelni's avatar
michaelni committed
4683 4684
                    }
            }
michael's avatar
michael committed
4685
            for(list=0; list<h->list_count; list++){
michaelni's avatar
michaelni committed
4686
                for(i=0; i<2; i++){
michael's avatar
michael committed
4687
                    unsigned int val;
michaelni's avatar
michaelni committed
4688 4689 4690 4691
                    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);
mbardiaux's avatar
mbardiaux committed
4692
                        tprintf(s->avctx, "final mv:%d %d\n", mx, my);
4693

michael's avatar
michael committed
4694
                        val= pack16to32(mx,my);
4695
                    }else
michael's avatar
michael committed
4696 4697
                        val=0;
                    fill_rectangle(h->mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, val, 4);
michaelni's avatar
michaelni committed
4698 4699 4700 4701
                }
            }
        }
    }
4702

michaelni's avatar
michaelni committed
4703 4704
    if(IS_INTER(mb_type))
        write_back_motion(h, mb_type);
4705

michaelni's avatar
michaelni committed
4706 4707 4708
    if(!IS_INTRA16x16(mb_type)){
        cbp= get_ue_golomb(&s->gb);
        if(cbp > 47){
4709
            av_log(h->s.avctx, AV_LOG_ERROR, "cbp too large (%u) at %d %d\n", cbp, s->mb_x, s->mb_y);
michaelni's avatar
michaelni committed
4710 4711
            return -1;
        }
4712

4713
        if(CHROMA){
michael's avatar
michael committed
4714 4715
            if(IS_INTRA4x4(mb_type)) cbp= golomb_to_intra4x4_cbp[cbp];
            else                     cbp= golomb_to_inter_cbp   [cbp];
4716 4717 4718 4719
        }else{
            if(IS_INTRA4x4(mb_type)) cbp= golomb_to_intra4x4_cbp_gray[cbp];
            else                     cbp= golomb_to_inter_cbp_gray[cbp];
        }
michaelni's avatar
michaelni committed
4720
    }
lorenm's avatar
lorenm committed
4721
    h->cbp = cbp;
michaelni's avatar
michaelni committed
4722

lorenm's avatar
lorenm committed
4723
    if(dct8x8_allowed && (cbp&15) && !IS_INTRA(mb_type)){
michael's avatar
michael committed
4724
        if(get_bits1(&s->gb)){
lorenm's avatar
lorenm committed
4725
            mb_type |= MB_TYPE_8x8DCT;
michael's avatar
michael committed
4726 4727
            h->cbp_table[mb_xy]= cbp;
        }
lorenm's avatar
lorenm committed
4728 4729 4730
    }
    s->current_picture.mb_type[mb_xy]= mb_type;

michaelni's avatar
michaelni committed
4731 4732
    if(cbp || IS_INTRA16x16(mb_type)){
        int i8x8, i4x4, chroma_idx;
4733
        int dquant;
michaelni's avatar
michaelni committed
4734
        GetBitContext *gb= IS_INTRA(mb_type) ? h->intra_gb_ptr : h->inter_gb_ptr;
lorenm's avatar
lorenm committed
4735
        const uint8_t *scan, *scan8x8, *dc_scan;
4736

michaelni's avatar
michaelni committed
4737 4738 4739
//        fill_non_zero_count_cache(h);

        if(IS_INTERLACED(mb_type)){
lorenm's avatar
lorenm committed
4740
            scan8x8= s->qscale ? h->field_scan8x8_cavlc : h->field_scan8x8_cavlc_q0;
lorenm's avatar
lorenm committed
4741
            scan= s->qscale ? h->field_scan : h->field_scan_q0;
michaelni's avatar
michaelni committed
4742 4743
            dc_scan= luma_dc_field_scan;
        }else{
lorenm's avatar
lorenm committed
4744
            scan8x8= s->qscale ? h->zigzag_scan8x8_cavlc : h->zigzag_scan8x8_cavlc_q0;
lorenm's avatar
lorenm committed
4745
            scan= s->qscale ? h->zigzag_scan : h->zigzag_scan_q0;
michaelni's avatar
michaelni committed
4746 4747 4748 4749 4750 4751
            dc_scan= luma_dc_zigzag_scan;
        }

        dquant= get_se_golomb(&s->gb);

        if( dquant > 25 || dquant < -26 ){
4752
            av_log(h->s.avctx, AV_LOG_ERROR, "dquant out of range (%d) at %d %d\n", dquant, s->mb_x, s->mb_y);
michaelni's avatar
michaelni committed
4753 4754
            return -1;
        }
4755

michaelni's avatar
michaelni committed
4756 4757 4758 4759 4760
        s->qscale += dquant;
        if(((unsigned)s->qscale) > 51){
            if(s->qscale<0) s->qscale+= 52;
            else            s->qscale-= 52;
        }
4761

4762 4763
        h->chroma_qp[0]= get_chroma_qp(h, 0, s->qscale);
        h->chroma_qp[1]= get_chroma_qp(h, 1, s->qscale);
michaelni's avatar
michaelni committed
4764
        if(IS_INTRA16x16(mb_type)){
lorenm's avatar
lorenm committed
4765
            if( decode_residual(h, h->intra_gb_ptr, h->mb, LUMA_DC_BLOCK_INDEX, dc_scan, h->dequant4_coeff[0][s->qscale], 16) < 0){
4766
                return -1; //FIXME continue if partitioned and other return -1 too
michaelni's avatar
michaelni committed
4767 4768 4769 4770 4771 4772 4773 4774
            }

            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;
lorenm's avatar
lorenm committed
4775
                        if( decode_residual(h, h->intra_gb_ptr, h->mb + 16*index, index, scan + 1, h->dequant4_coeff[0][s->qscale], 15) < 0 ){
michaelni's avatar
michaelni committed
4776 4777 4778 4779 4780
                            return -1;
                        }
                    }
                }
            }else{
michael's avatar
michael committed
4781
                fill_rectangle(&h->non_zero_count_cache[scan8[0]], 4, 4, 8, 0, 1);
michaelni's avatar
michaelni committed
4782 4783 4784 4785
            }
        }else{
            for(i8x8=0; i8x8<4; i8x8++){
                if(cbp & (1<<i8x8)){
lorenm's avatar
lorenm committed
4786 4787
                    if(IS_8x8DCT(mb_type)){
                        DCTELEM *buf = &h->mb[64*i8x8];
mru's avatar
mru committed
4788
                        uint8_t *nnz;
lorenm's avatar
lorenm committed
4789
                        for(i4x4=0; i4x4<4; i4x4++){
lorenm's avatar
lorenm committed
4790
                            if( decode_residual(h, gb, buf, i4x4+4*i8x8, scan8x8+16*i4x4,
lorenm's avatar
lorenm committed
4791
                                                h->dequant8_coeff[IS_INTRA( mb_type ) ? 0:1][s->qscale], 16) <0 )
lorenm's avatar
lorenm committed
4792 4793
                                return -1;
                        }
mru's avatar
mru committed
4794
                        nnz= &h->non_zero_count_cache[ scan8[4*i8x8] ];
4795
                        nnz[0] += nnz[1] + nnz[8] + nnz[9];
lorenm's avatar
lorenm committed
4796 4797 4798
                    }else{
                        for(i4x4=0; i4x4<4; i4x4++){
                            const int index= i4x4 + 4*i8x8;
4799

lorenm's avatar
lorenm committed
4800
                            if( decode_residual(h, gb, h->mb + 16*index, index, scan, h->dequant4_coeff[IS_INTRA( mb_type ) ? 0:3][s->qscale], 16) <0 ){
lorenm's avatar
lorenm committed
4801 4802
                                return -1;
                            }
michaelni's avatar
michaelni committed
4803 4804 4805 4806 4807 4808 4809 4810
                        }
                    }
                }else{
                    uint8_t * const nnz= &h->non_zero_count_cache[ scan8[4*i8x8] ];
                    nnz[0] = nnz[1] = nnz[8] = nnz[9] = 0;
                }
            }
        }
4811

michaelni's avatar
michaelni committed
4812 4813
        if(cbp&0x30){
            for(chroma_idx=0; chroma_idx<2; chroma_idx++)
lorenm's avatar
lorenm committed
4814
                if( decode_residual(h, gb, h->mb + 256 + 16*4*chroma_idx, CHROMA_DC_BLOCK_INDEX, chroma_dc_scan, NULL, 4) < 0){
michaelni's avatar
michaelni committed
4815 4816 4817 4818 4819 4820
                    return -1;
                }
        }

        if(cbp&0x20){
            for(chroma_idx=0; chroma_idx<2; chroma_idx++){
4821
                const uint32_t *qmul = h->dequant4_coeff[chroma_idx+1+(IS_INTRA( mb_type ) ? 0:3)][h->chroma_qp[chroma_idx]];
michaelni's avatar
michaelni committed
4822 4823
                for(i4x4=0; i4x4<4; i4x4++){
                    const int index= 16 + 4*chroma_idx + i4x4;
4824
                    if( decode_residual(h, gb, h->mb + 16*index, index, scan + 1, qmul, 15) < 0){
michaelni's avatar
michaelni committed
4825 4826 4827 4828 4829 4830 4831 4832 4833 4834
                        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{
4835 4836 4837 4838
        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;
michaelni's avatar
michaelni committed
4839
    }
4840
    s->current_picture.qscale_table[mb_xy]= s->qscale;
michaelni's avatar
michaelni committed
4841 4842
    write_back_non_zero_count(h);

lorenm's avatar
lorenm committed
4843 4844 4845 4846 4847
    if(MB_MBAFF){
        h->ref_count[0] >>= 1;
        h->ref_count[1] >>= 1;
    }

michaelni's avatar
michaelni committed
4848 4849 4850
    return 0;
}

4851 4852 4853 4854 4855 4856 4857 4858
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;
4859

4860 4861 4862 4863 4864 4865 4866
    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;
    }

4867
    return get_cabac_noinline( &h->cabac, &h->cabac_state[70 + ctx] );
4868 4869
}

michael's avatar
michael committed
4870 4871 4872
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;
4873

michael's avatar
michael committed
4874 4875
    if(intra_slice){
        MpegEncContext * const s = &h->s;
4876 4877
        const int mba_xy = h->left_mb_xy[0];
        const int mbb_xy = h->top_mb_xy;
michael's avatar
michael committed
4878
        int ctx=0;
4879
        if( h->slice_table[mba_xy] == h->slice_num && !IS_INTRA4x4( s->current_picture.mb_type[mba_xy] ) )
4880
            ctx++;
4881
        if( h->slice_table[mbb_xy] == h->slice_num && !IS_INTRA4x4( s->current_picture.mb_type[mbb_xy] ) )
4882
            ctx++;
4883
        if( get_cabac_noinline( &h->cabac, &state[ctx] ) == 0 )
michael's avatar
michael committed
4884 4885 4886
            return 0;   /* I4x4 */
        state += 2;
    }else{
4887
        if( get_cabac_noinline( &h->cabac, &state[0] ) == 0 )
4888
            return 0;   /* I4x4 */
michael's avatar
michael committed
4889
    }
4890

michael's avatar
michael committed
4891 4892
    if( get_cabac_terminate( &h->cabac ) )
        return 25;  /* PCM */
4893

michael's avatar
michael committed
4894
    mb_type = 1; /* I16x16 */
4895 4896 4897 4898 4899
    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] );
michael's avatar
michael committed
4900 4901
    return mb_type;
}
4902

4903
static int decode_cabac_mb_type_b( H264Context *h ) {
michael's avatar
michael committed
4904 4905
    MpegEncContext * const s = &h->s;

4906 4907
        const int mba_xy = h->left_mb_xy[0];
        const int mbb_xy = h->top_mb_xy;
4908 4909
        int ctx = 0;
        int bits;
4910
        assert(h->slice_type_nos == FF_B_TYPE);
4911

4912
        if( h->slice_table[mba_xy] == h->slice_num && !IS_DIRECT( s->current_picture.mb_type[mba_xy] ) )
4913
            ctx++;
4914
        if( h->slice_table[mbb_xy] == h->slice_num && !IS_DIRECT( s->current_picture.mb_type[mbb_xy] ) )
4915 4916
            ctx++;

4917
        if( !get_cabac_noinline( &h->cabac, &h->cabac_state[27+ctx] ) )
4918 4919
            return 0; /* B_Direct_16x16 */

4920 4921
        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 */
4922 4923
        }

4924 4925 4926 4927
        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] );
4928 4929 4930
        if( bits < 8 )
            return bits + 3; /* B_Bi_16x16 through B_L1_L0_16x8 */
        else if( bits == 13 ) {
michael's avatar
michael committed
4931
            return decode_cabac_intra_mb_type(h, 32, 0) + 23;
4932 4933 4934 4935 4936
        } else if( bits == 14 )
            return 11; /* B_L1_L0_8x16 */
        else if( bits == 15 )
            return 22; /* B_8x8 */

4937
        bits= ( bits<<1 ) | get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] );
4938
        return bits - 4; /* B_L0_Bi_* through B_Bi_Bi_* */
4939 4940
}

lorenm's avatar
lorenm committed
4941
static int decode_cabac_mb_skip( H264Context *h, int mb_x, int mb_y ) {
4942
    MpegEncContext * const s = &h->s;
lorenm's avatar
lorenm committed
4943
    int mba_xy, mbb_xy;
4944 4945
    int ctx = 0;

lorenm's avatar
lorenm committed
4946 4947 4948 4949 4950 4951 4952 4953 4954 4955 4956 4957 4958 4959 4960 4961
    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{
4962
        int mb_xy = h->mb_xy;
lorenm's avatar
lorenm committed
4963
        mba_xy = mb_xy - 1;
4964
        mbb_xy = mb_xy - (s->mb_stride << FIELD_PICTURE);
lorenm's avatar
lorenm committed
4965 4966
    }

4967
    if( h->slice_table[mba_xy] == h->slice_num && !IS_SKIP( s->current_picture.mb_type[mba_xy] ))
4968
        ctx++;
4969
    if( h->slice_table[mbb_xy] == h->slice_num && !IS_SKIP( s->current_picture.mb_type[mbb_xy] ))
4970 4971
        ctx++;

4972
    if( h->slice_type_nos == FF_B_TYPE )
4973
        ctx += 13;
4974
    return get_cabac_noinline( &h->cabac, &h->cabac_state[11+ctx] );
4975 4976 4977 4978 4979 4980 4981 4982
}

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;

lorenm's avatar
lorenm committed
4983 4984 4985 4986
    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] );

4987 4988 4989 4990 4991 4992 4993
    if( mode >= pred_mode )
        return mode + 1;
    else
        return mode;
}

static int decode_cabac_mb_chroma_pre_mode( H264Context *h) {
4994 4995
    const int mba_xy = h->left_mb_xy[0];
    const int mbb_xy = h->top_mb_xy;
4996 4997 4998

    int ctx = 0;

4999
    /* No need to test for IS_INTRA4x4 and IS_INTRA16x16, as we set chroma_pred_mode_table to 0 */
5000
    if( h->slice_table[mba_xy] == h->slice_num && h->chroma_pred_mode_table[mba_xy] != 0 )
5001
        ctx++;
5002

5003
    if( h->slice_table[mbb_xy] == h->slice_num && h->chroma_pred_mode_table[mbb_xy] != 0 )
5004 5005
        ctx++;

5006
    if( get_cabac_noinline( &h->cabac, &h->cabac_state[64+ctx] ) == 0 )
5007 5008
        return 0;

5009
    if( get_cabac_noinline( &h->cabac, &h->cabac_state[64+3] ) == 0 )
5010
        return 1;
5011
    if( get_cabac_noinline( &h->cabac, &h->cabac_state[64+3] ) == 0 )
5012 5013 5014 5015 5016 5017
        return 2;
    else
        return 3;
}

static int decode_cabac_mb_cbp_luma( H264Context *h) {
5018 5019 5020 5021 5022 5023 5024 5025 5026 5027 5028 5029 5030
    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;
5031 5032 5033 5034 5035 5036
    return cbp;
}
static int decode_cabac_mb_cbp_chroma( H264Context *h) {
    int ctx;
    int cbp_a, cbp_b;

michael's avatar
michael committed
5037 5038
    cbp_a = (h->left_cbp>>4)&0x03;
    cbp_b = (h-> top_cbp>>4)&0x03;
5039 5040 5041 5042

    ctx = 0;
    if( cbp_a > 0 ) ctx++;
    if( cbp_b > 0 ) ctx += 2;
5043
    if( get_cabac_noinline( &h->cabac, &h->cabac_state[77 + ctx] ) == 0 )
5044 5045 5046 5047 5048
        return 0;

    ctx = 4;
    if( cbp_a == 2 ) ctx++;
    if( cbp_b == 2 ) ctx += 2;
5049
    return 1 + get_cabac_noinline( &h->cabac, &h->cabac_state[77 + ctx] );
5050 5051
}
static int decode_cabac_mb_dqp( H264Context *h) {
5052
    int   ctx= h->last_qscale_diff != 0;
5053 5054
    int   val = 0;

5055
    while( get_cabac_noinline( &h->cabac, &h->cabac_state[60 + ctx] ) ) {
5056
        ctx= 2+(ctx>>1);
5057
        val++;
lorenm's avatar
lorenm committed
5058
        if(val > 102) //prevent infinite loop
5059
            return INT_MIN;
5060 5061 5062
    }

    if( val&0x01 )
5063
        return   (val + 1)>>1 ;
5064
    else
5065
        return -((val + 1)>>1);
5066
}
5067
static int decode_cabac_p_mb_sub_type( H264Context *h ) {
5068 5069 5070 5071 5072 5073 5074 5075
    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 */
}
5076 5077 5078 5079 5080
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] ) )
5081
        return 1 + get_cabac( &h->cabac, &h->cabac_state[39] ); /* B_L0_8x8, B_L1_8x8 */
5082 5083 5084 5085 5086 5087 5088 5089 5090 5091
    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;
}
5092

lorenm's avatar
lorenm committed
5093
static inline int decode_cabac_mb_transform_size( H264Context *h ) {
5094
    return get_cabac_noinline( &h->cabac, &h->cabac_state[399 + h->neighbor_transform_size] );
lorenm's avatar
lorenm committed
5095 5096
}

5097 5098 5099 5100 5101 5102
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;

5103
    if( h->slice_type_nos == FF_B_TYPE) {
5104 5105 5106 5107 5108 5109 5110 5111 5112 5113
        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;
    }
5114 5115 5116

    while( get_cabac( &h->cabac, &h->cabac_state[54+ctx] ) ) {
        ref++;
5117
        ctx = (ctx>>2)+4;
5118
        if(ref >= 32 /*h->ref_list[list]*/){
5119
            return -1;
5120
        }
5121 5122 5123 5124 5125 5126 5127 5128
    }
    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;
5129 5130
    int mvd;
    int ctx = (amvd>2) + (amvd>32);
5131

michael's avatar
michael committed
5132 5133 5134 5135 5136
    if(!get_cabac(&h->cabac, &h->cabac_state[ctxbase+ctx]))
        return 0;

    mvd= 1;
    ctx= 3;
5137 5138
    while( mvd < 9 && get_cabac( &h->cabac, &h->cabac_state[ctxbase+ctx] ) ) {
        mvd++;
michael's avatar
michael committed
5139
        if( ctx < 6 )
5140 5141 5142 5143 5144 5145 5146 5147
            ctx++;
    }

    if( mvd >= 9 ) {
        int k = 3;
        while( get_cabac_bypass( &h->cabac ) ) {
            mvd += 1 << k;
            k++;
5148 5149 5150 5151
            if(k>24){
                av_log(h->s.avctx, AV_LOG_ERROR, "overflow in decode_cabac_mb_mvd\n");
                return INT_MIN;
            }
5152 5153 5154 5155 5156 5157
        }
        while( k-- ) {
            if( get_cabac_bypass( &h->cabac ) )
                mvd += 1 << k;
        }
    }
5158
    return get_cabac_bypass_sign( &h->cabac, -mvd );
5159 5160
}

5161
static av_always_inline int get_cabac_cbf_ctx( H264Context *h, int cat, int idx, int is_dc ) {
michael's avatar
michael committed
5162
    int nza, nzb;
5163 5164
    int ctx = 0;

5165
    if( is_dc ) {
astrange's avatar
astrange committed
5166 5167 5168 5169 5170 5171 5172
        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;
        }
michael's avatar
michael committed
5173
    } else {
5174 5175 5176
        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];
5177
    }
5178

michael's avatar
michael committed
5179
    if( nza > 0 )
5180 5181
        ctx++;

michael's avatar
michael committed
5182
    if( nzb > 0 )
5183 5184 5185 5186 5187
        ctx += 2;

    return ctx + 4 * cat;
}

5188
DECLARE_ASM_CONST(1, uint8_t, last_coeff_flag_offset_8x8[63]) = {
michael's avatar
michael committed
5189 5190 5191 5192 5193 5194
    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
};

5195
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 ) {
lorenm's avatar
lorenm committed
5196 5197 5198 5199 5200 5201 5202 5203 5204 5205 5206
    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
    };
michael's avatar
michael committed
5207
    static const uint8_t significant_coeff_flag_offset_8x8[2][63] = {
lorenm's avatar
lorenm committed
5208
      { 0, 1, 2, 3, 4, 5, 5, 4, 4, 3, 3, 4, 4, 4, 5, 5,
lorenm's avatar
lorenm committed
5209 5210
        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,
lorenm's avatar
lorenm committed
5211 5212 5213 5214 5215
       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 }
lorenm's avatar
lorenm committed
5216
    };
5217 5218 5219 5220 5221 5222 5223 5224 5225 5226 5227 5228
    /* 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 }
    };
lorenm's avatar
lorenm committed
5229 5230

    int index[64];
5231

benoit's avatar
benoit committed
5232
    int av_unused last;
5233
    int coeff_count = 0;
5234
    int node_ctx = 0;
5235

lorenm's avatar
lorenm committed
5236 5237 5238
    uint8_t *significant_coeff_ctx_base;
    uint8_t *last_coeff_ctx_base;
    uint8_t *abs_level_m1_ctx_base;
lorenm's avatar
lorenm committed
5239

5240
#if !ARCH_X86
5241 5242 5243 5244 5245 5246 5247 5248 5249 5250 5251 5252 5253
#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


5254 5255 5256 5257
    /* cat: 0-> DC 16x16  n = 0
     *      1-> AC 16x16  n = luma4x4idx
     *      2-> Luma4x4   n = luma4x4idx
     *      3-> DC Chroma n = iCbCr
5258
     *      4-> AC Chroma n = 16 + 4 * iCbCr + chroma4x4idx
lorenm's avatar
lorenm committed
5259
     *      5-> Luma8x8   n = 4 * luma8x8idx
5260 5261 5262
     */

    /* read coded block flag */
5263 5264
    if( is_dc || cat != 5 ) {
        if( get_cabac( CC, &h->cabac_state[85 + get_cabac_cbf_ctx( h, cat, n, is_dc ) ] ) == 0 ) {
5265 5266
            if( !is_dc )
                h->non_zero_count_cache[scan8[n]] = 0;
5267

5268 5269 5270 5271 5272
#ifdef CABAC_ON_STACK
            h->cabac.range     = cc.range     ;
            h->cabac.low       = cc.low       ;
            h->cabac.bytestream= cc.bytestream;
#endif
5273
            return;
lorenm's avatar
lorenm committed
5274
        }
5275 5276
    }

lorenm's avatar
lorenm committed
5277
    significant_coeff_ctx_base = h->cabac_state
lorenm's avatar
lorenm committed
5278
        + significant_coeff_flag_offset[MB_FIELD][cat];
lorenm's avatar
lorenm committed
5279
    last_coeff_ctx_base = h->cabac_state
lorenm's avatar
lorenm committed
5280
        + last_coeff_flag_offset[MB_FIELD][cat];
lorenm's avatar
lorenm committed
5281 5282 5283
    abs_level_m1_ctx_base = h->cabac_state
        + coeff_abs_level_m1_offset[cat];

5284
    if( !is_dc && cat == 5 ) {
lorenm's avatar
lorenm committed
5285 5286 5287
#define DECODE_SIGNIFICANCE( coefs, sig_off, last_off ) \
        for(last= 0; last < coefs; last++) { \
            uint8_t *sig_ctx = significant_coeff_ctx_base + sig_off; \
5288
            if( get_cabac( CC, sig_ctx )) { \
lorenm's avatar
lorenm committed
5289 5290
                uint8_t *last_ctx = last_coeff_ctx_base + last_off; \
                index[coeff_count++] = last; \
5291
                if( get_cabac( CC, last_ctx ) ) { \
lorenm's avatar
lorenm committed
5292 5293 5294 5295
                    last= max_coeff; \
                    break; \
                } \
            } \
5296 5297 5298
        }\
        if( last == max_coeff -1 ) {\
            index[coeff_count++] = last;\
lorenm's avatar
lorenm committed
5299
        }
michael's avatar
michael committed
5300
        const uint8_t *sig_off = significant_coeff_flag_offset_8x8[MB_FIELD];
5301
#if ARCH_X86 && HAVE_7REGS && HAVE_EBX_AVAILABLE && !defined(BROKEN_RELOCATIONS)
michael's avatar
michael committed
5302 5303
        coeff_count= decode_significance_8x8_x86(CC, significant_coeff_ctx_base, index, sig_off);
    } else {
5304
        coeff_count= decode_significance_x86(CC, max_coeff, significant_coeff_ctx_base, index);
5305
#else
michael's avatar
michael committed
5306 5307
        DECODE_SIGNIFICANCE( 63, sig_off[last], last_coeff_flag_offset_8x8[last] );
    } else {
lorenm's avatar
lorenm committed
5308
        DECODE_SIGNIFICANCE( max_coeff - 1, last, last );
5309
#endif
5310
    }
michael's avatar
michael committed
5311
    assert(coeff_count > 0);
5312

5313
    if( is_dc ) {
astrange's avatar
astrange committed
5314 5315 5316 5317
        if( cat == 0 )
            h->cbp_table[h->mb_xy] |= 0x100;
        else
            h->cbp_table[h->mb_xy] |= 0x40 << n;
5318
    } else {
5319 5320
        if( cat == 5 )
            fill_rectangle(&h->non_zero_count_cache[scan8[n]], 2, 2, 8, coeff_count, 1);
astrange's avatar
astrange committed
5321
        else {
5322
            assert( cat == 1 || cat == 2 || cat == 4 );
5323
            h->non_zero_count_cache[scan8[n]] = coeff_count;
astrange's avatar
astrange committed
5324
        }
5325
    }
5326

5327
    do {
5328 5329
        uint8_t *ctx = coeff_abs_level1_ctx[node_ctx] + abs_level_m1_ctx_base;

5330
        int j= scantable[index[--coeff_count]];
5331

5332
        if( get_cabac( CC, ctx ) == 0 ) {
5333
            node_ctx = coeff_abs_level_transition[0][node_ctx];
5334
            if( is_dc ) {
5335
                block[j] = get_cabac_bypass_sign( CC, -1);
michael's avatar
michael committed
5336
            }else{
michael's avatar
michael committed
5337
                block[j] = (get_cabac_bypass_sign( CC, -qmul[j]) + 32) >> 6;
michael's avatar
michael committed
5338
            }
5339
        } else {
michael's avatar
michael committed
5340
            int coeff_abs = 2;
5341 5342 5343
            ctx = coeff_abs_levelgt1_ctx[node_ctx] + abs_level_m1_ctx_base;
            node_ctx = coeff_abs_level_transition[1][node_ctx];

5344
            while( coeff_abs < 15 && get_cabac( CC, ctx ) ) {
michael's avatar
michael committed
5345
                coeff_abs++;
5346 5347
            }

michael's avatar
michael committed
5348 5349
            if( coeff_abs >= 15 ) {
                int j = 0;
5350
                while( get_cabac_bypass( CC ) ) {
michael's avatar
michael committed
5351 5352
                    j++;
                }
5353

michael's avatar
michael committed
5354
                coeff_abs=1;
michael's avatar
michael committed
5355
                while( j-- ) {
5356
                    coeff_abs += coeff_abs + get_cabac_bypass( CC );
michael's avatar
michael committed
5357
                }
michael's avatar
michael committed
5358
                coeff_abs+= 14;
5359 5360
            }

5361
            if( is_dc ) {
5362
                block[j] = get_cabac_bypass_sign( CC, -coeff_abs );
michael's avatar
michael committed
5363
            }else{
5364
                block[j] = (get_cabac_bypass_sign( CC, -coeff_abs ) * qmul[j] + 32) >> 6;
michael's avatar
michael committed
5365
            }
michael's avatar
michael committed
5366
        }
5367
    } while( coeff_count );
5368 5369 5370 5371 5372
#ifdef CABAC_ON_STACK
            h->cabac.range     = cc.range     ;
            h->cabac.low       = cc.low       ;
            h->cabac.bytestream= cc.bytestream;
#endif
5373

5374 5375
}

5376
#if !CONFIG_SMALL
5377 5378 5379 5380 5381 5382 5383 5384 5385 5386
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 ) {
5387
#if CONFIG_SMALL
5388 5389 5390 5391 5392 5393 5394
    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
}

5395
static inline void compute_mb_neighbors(H264Context *h)
5396 5397
{
    MpegEncContext * const s = &h->s;
5398
    const int mb_xy  = h->mb_xy;
5399 5400
    h->top_mb_xy     = mb_xy - s->mb_stride;
    h->left_mb_xy[0] = mb_xy - 1;
lorenm's avatar
lorenm committed
5401
    if(FRAME_MBAFF){
5402 5403
        const int pair_xy          = s->mb_x     + (s->mb_y & ~1)*s->mb_stride;
        const int top_pair_xy      = pair_xy     - s->mb_stride;
5404 5405 5406
        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;
5407
        const int bottom = (s->mb_y & 1);
5408

5409
        if (curr_mb_field_flag && (bottom || top_mb_field_flag)){
5410 5411
            h->top_mb_xy -= s->mb_stride;
        }
5412
        if (!left_mb_field_flag == curr_mb_field_flag) {
5413 5414
            h->left_mb_xy[0] = pair_xy - 1;
        }
5415 5416
    } else if (FIELD_PICTURE) {
        h->top_mb_xy -= s->mb_stride;
5417 5418 5419 5420
    }
    return;
}

5421 5422
/**
 * decodes a macroblock
diego's avatar
diego committed
5423
 * @returns 0 if OK, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed
5424 5425 5426
 */
static int decode_mb_cabac(H264Context *h) {
    MpegEncContext * const s = &h->s;
5427
    int mb_xy;
5428
    int mb_type, partition_count, cbp = 0;
lorenm's avatar
lorenm committed
5429
    int dct8x8_allowed= h->pps.transform_8x8_mode;
5430

5431 5432
    mb_xy = h->mb_xy = s->mb_x + s->mb_y*s->mb_stride;

mbardiaux's avatar
mbardiaux committed
5433
    tprintf(s->avctx, "pic:%d mb:%d/%d\n", h->frame_num, s->mb_x, s->mb_y);
michael's avatar
michael committed
5434
    if( h->slice_type_nos != FF_I_TYPE ) {
lorenm's avatar
lorenm committed
5435 5436 5437 5438 5439 5440 5441 5442
        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 );
5443
        /* read skip flags */
lorenm's avatar
lorenm committed
5444 5445 5446 5447
        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 );
michael's avatar
michael committed
5448
                if(!h->next_mb_skipped)
lorenm's avatar
lorenm committed
5449 5450 5451
                    h->mb_mbaff = h->mb_field_decoding_flag = decode_cabac_field_decoding_flag(h);
            }

5452
            decode_mb_skip(h);
5453 5454

            h->cbp_table[mb_xy] = 0;
5455
            h->chroma_pred_mode_table[mb_xy] = 0;
5456 5457 5458 5459 5460 5461
            h->last_qscale_diff = 0;

            return 0;

        }
    }
lorenm's avatar
lorenm committed
5462 5463 5464
    if(FRAME_MBAFF){
        if( (s->mb_y&1) == 0 )
            h->mb_mbaff =
5465
            h->mb_field_decoding_flag = decode_cabac_field_decoding_flag(h);
5466
    }
5467

5468
    h->prev_mb_skipped = 0;
5469

diego's avatar
diego committed
5470
    compute_mb_neighbors(h);
5471

5472
    if( h->slice_type_nos == FF_B_TYPE ) {
5473
        mb_type = decode_cabac_mb_type_b( h );
5474 5475 5476 5477 5478 5479 5480
        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;
        }
5481
    } else if( h->slice_type_nos == FF_P_TYPE ) {
5482 5483 5484 5485 5486 5487 5488 5489 5490
        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] );
            }
5491 5492 5493
            partition_count= p_mb_type_info[mb_type].partition_count;
            mb_type=         p_mb_type_info[mb_type].type;
        } else {
5494
            mb_type= decode_cabac_intra_mb_type(h, 17, 0);
5495 5496 5497
            goto decode_intra_mb;
        }
    } else {
5498
        mb_type= decode_cabac_intra_mb_type(h, 3, 1);
5499 5500 5501
        if(h->slice_type == FF_SI_TYPE && mb_type)
            mb_type--;
        assert(h->slice_type_nos == FF_I_TYPE);
5502 5503 5504 5505 5506 5507
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;
    }
lorenm's avatar
lorenm committed
5508
    if(MB_FIELD)
5509 5510 5511 5512 5513
        mb_type |= MB_TYPE_INTERLACED;

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

    if(IS_INTRA_PCM(mb_type)) {
5514
        const uint8_t *ptr;
5515

diego's avatar
diego committed
5516
        // We assume these blocks are very rare so we do not optimize it.
5517 5518 5519
        // 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;
5520 5521 5522 5523
        if(h->cabac.low&0x1) ptr--;
        if(CABAC_BITS==16){
            if(h->cabac.low&0x1FF) ptr--;
        }
5524 5525

        // The pixels are stored in the same order as levels in h->mb array.
michael's avatar
michael committed
5526
        memcpy(h->mb, ptr, 256); ptr+=256;
5527
        if(CHROMA){
michael's avatar
michael committed
5528
            memcpy(h->mb+128, ptr, 128); ptr+=128;
5529 5530 5531 5532
        }

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

5533
        // All blocks are present
5534
        h->cbp_table[mb_xy] = 0x1ef;
5535
        h->chroma_pred_mode_table[mb_xy] = 0;
5536
        // In deblocking, the quantizer is 0
5537
        s->current_picture.qscale_table[mb_xy]= 0;
5538
        // All coeffs are present
5539
        memset(h->non_zero_count[mb_xy], 16, 16);
lorenm's avatar
lorenm committed
5540
        s->current_picture.mb_type[mb_xy]= mb_type;
5541
        h->last_qscale_diff = 0;
5542
        return 0;
5543 5544
    }

lorenm's avatar
lorenm committed
5545 5546 5547 5548 5549
    if(MB_MBAFF){
        h->ref_count[0] <<= 1;
        h->ref_count[1] <<= 1;
    }

michael's avatar
michael committed
5550
    fill_caches(h, mb_type, 0);
5551 5552

    if( IS_INTRA( mb_type ) ) {
5553
        int i, pred_mode;
5554
        if( IS_INTRA4x4( mb_type ) ) {
lorenm's avatar
lorenm committed
5555 5556 5557 5558 5559 5560 5561 5562 5563 5564 5565
            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 );
5566 5567

                //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
5568
                }
5569 5570 5571 5572 5573 5574 5575
            }
            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;
        }
5576
        if(CHROMA){
michael's avatar
michael committed
5577 5578
            h->chroma_pred_mode_table[mb_xy] =
            pred_mode                        = decode_cabac_mb_chroma_pre_mode( h );
5579

michael's avatar
michael committed
5580 5581 5582
            pred_mode= check_intra_pred_mode( h, pred_mode );
            if( pred_mode < 0 ) return -1;
            h->chroma_pred_mode= pred_mode;
5583
        }
5584
    } else if( partition_count == 4 ) {
5585 5586
        int i, j, sub_partition_count[4], list, ref[2][4];

5587
        if( h->slice_type_nos == FF_B_TYPE ) {
5588 5589 5590 5591 5592
            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
lorenm committed
5593 5594
            if( IS_DIRECT(h->sub_mb_type[0] | h->sub_mb_type[1] |
                          h->sub_mb_type[2] | h->sub_mb_type[3]) ) {
5595
                pred_direct_motion(h, &mb_type);
5596 5597 5598 5599
                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;
5600 5601 5602 5603 5604 5605
                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 );
                }
            }
5606 5607 5608 5609 5610 5611
        } 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;
            }
5612 5613
        }

5614
        for( list = 0; list < h->list_count; list++ ) {
5615
                for( i = 0; i < 4; i++ ) {
5616 5617
                    if(IS_DIRECT(h->sub_mb_type[i])) continue;
                    if(IS_DIR(h->sub_mb_type[i], 0, list)){
5618
                        if( h->ref_count[list] > 1 ){
5619
                            ref[list][i] = decode_cabac_mb_ref( h, list, 4*i );
5620 5621 5622 5623 5624
                            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
5625 5626 5627 5628
                            ref[list][i] = 0;
                    } else {
                        ref[list][i] = -1;
                    }
michael's avatar
1000l  
michael committed
5629
                                                       h->ref_cache[list][ scan8[4*i]+1 ]=
5630 5631 5632 5633
                    h->ref_cache[list][ scan8[4*i]+8 ]=h->ref_cache[list][ scan8[4*i]+9 ]= ref[list][i];
                }
        }

lorenm's avatar
lorenm committed
5634 5635 5636
        if(dct8x8_allowed)
            dct8x8_allowed = get_dct8x8_allowed(h);

5637
        for(list=0; list<h->list_count; list++){
5638
            for(i=0; i<4; i++){
5639
                h->ref_cache[list][ scan8[4*i]   ]=h->ref_cache[list][ scan8[4*i]+1 ];
5640 5641 5642 5643
                if(IS_DIRECT(h->sub_mb_type[i])){
                    fill_rectangle(h->mvd_cache[list][scan8[4*i]], 2, 2, 8, 0, 4);
                    continue;
                }
5644 5645 5646 5647 5648 5649 5650 5651 5652 5653 5654 5655 5656 5657

                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
5658
                        tprintf(s->avctx, "final mv:%d %d\n", mx, my);
5659 5660

                        if(IS_SUB_8X8(sub_mb_type)){
5661
                            mv_cache[ 1 ][0]=
5662
                            mv_cache[ 8 ][0]= mv_cache[ 9 ][0]= mx;
5663
                            mv_cache[ 1 ][1]=
5664 5665
                            mv_cache[ 8 ][1]= mv_cache[ 9 ][1]= my;

5666
                            mvd_cache[ 1 ][0]=
5667
                            mvd_cache[ 8 ][0]= mvd_cache[ 9 ][0]= mx - mpx;
5668
                            mvd_cache[ 1 ][1]=
5669 5670
                            mvd_cache[ 8 ][1]= mvd_cache[ 9 ][1]= my - mpy;
                        }else if(IS_SUB_8X4(sub_mb_type)){
5671 5672
                            mv_cache[ 1 ][0]= mx;
                            mv_cache[ 1 ][1]= my;
5673

5674 5675
                            mvd_cache[ 1 ][0]= mx - mpx;
                            mvd_cache[ 1 ][1]= my - mpy;
5676
                        }else if(IS_SUB_4X8(sub_mb_type)){
5677 5678
                            mv_cache[ 8 ][0]= mx;
                            mv_cache[ 8 ][1]= my;
5679

5680 5681
                            mvd_cache[ 8 ][0]= mx - mpx;
                            mvd_cache[ 8 ][1]= my - mpy;
5682
                        }
5683 5684 5685 5686 5687
                        mv_cache[ 0 ][0]= mx;
                        mv_cache[ 0 ][1]= my;

                        mvd_cache[ 0 ][0]= mx - mpx;
                        mvd_cache[ 0 ][1]= my - mpy;
5688 5689 5690 5691 5692 5693 5694 5695 5696
                    }
                }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;
                }
            }
        }
5697 5698 5699 5700
    } 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
5701
        dct8x8_allowed &= h->sps.direct_8x8_inference_flag;
5702
    } else {
5703 5704
        int list, mx, my, i, mpx, mpy;
        if(IS_16X16(mb_type)){
michael's avatar
michael committed
5705
            for(list=0; list<h->list_count; list++){
5706
                if(IS_DIR(mb_type, 0, list)){
5707 5708 5709 5710 5711 5712 5713 5714 5715
                    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;
5716
                        fill_rectangle(&h->ref_cache[list][ scan8[0] ], 4, 4, 8, ref, 1);
lorenm's avatar
lorenm committed
5717
                }else
michael's avatar
michael committed
5718
                    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
5719
            }
michael's avatar
michael committed
5720
            for(list=0; list<h->list_count; list++){
5721 5722 5723 5724 5725
                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 );
mbardiaux's avatar
mbardiaux committed
5726
                    tprintf(s->avctx, "final mv:%d %d\n", mx, my);
5727 5728 5729

                    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
5730 5731
                }else
                    fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, 0, 4);
5732 5733 5734
            }
        }
        else if(IS_16X8(mb_type)){
5735
            for(list=0; list<h->list_count; list++){
5736 5737
                    for(i=0; i<2; i++){
                        if(IS_DIR(mb_type, i, list)){
5738 5739 5740 5741 5742 5743 5744 5745 5746
                            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;
5747
                            fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, ref, 1);
5748 5749
                        }else
                            fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, (LIST_NOT_USED&0xFF), 1);
5750 5751
                    }
            }
5752
            for(list=0; list<h->list_count; list++){
5753 5754 5755 5756 5757
                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 );
mbardiaux's avatar
mbardiaux committed
5758
                        tprintf(s->avctx, "final mv:%d %d\n", mx, my);
5759 5760 5761

                        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
5762
                    }else{
5763 5764
                        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);
5765 5766 5767 5768 5769
                    }
                }
            }
        }else{
            assert(IS_8X16(mb_type));
5770
            for(list=0; list<h->list_count; list++){
5771 5772
                    for(i=0; i<2; i++){
                        if(IS_DIR(mb_type, i, list)){ //FIXME optimize
5773 5774 5775 5776 5777 5778 5779 5780 5781
                            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;
5782
                            fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, ref, 1);
5783 5784
                        }else
                            fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, (LIST_NOT_USED&0xFF), 1);
5785 5786
                    }
            }
5787
            for(list=0; list<h->list_count; list++){
5788 5789 5790 5791 5792 5793
                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
5794
                        tprintf(s->avctx, "final mv:%d %d\n", mx, my);
5795 5796
                        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);
lorenm's avatar
lorenm committed
5797
                    }else{
5798 5799
                        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);
5800 5801 5802 5803
                    }
                }
            }
        }
5804 5805
    }

5806 5807
   if( IS_INTER( mb_type ) ) {
        h->chroma_pred_mode_table[mb_xy] = 0;
5808
        write_back_motion( h, mb_type );
5809
   }
5810 5811 5812

    if( !IS_INTRA16x16( mb_type ) ) {
        cbp  = decode_cabac_mb_cbp_luma( h );
5813
        if(CHROMA)
michael's avatar
michael committed
5814
            cbp |= decode_cabac_mb_cbp_chroma( h ) << 4;
5815 5816
    }

lorenm's avatar
lorenm committed
5817
    h->cbp_table[mb_xy] = h->cbp = cbp;
5818

lorenm's avatar
lorenm committed
5819 5820 5821 5822 5823 5824
    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;

5825
    if( cbp || IS_INTRA16x16( mb_type ) ) {
lorenm's avatar
lorenm committed
5826
        const uint8_t *scan, *scan8x8, *dc_scan;
5827
        const uint32_t *qmul;
5828 5829 5830
        int dqp;

        if(IS_INTERLACED(mb_type)){
lorenm's avatar
lorenm committed
5831
            scan8x8= s->qscale ? h->field_scan8x8 : h->field_scan8x8_q0;
lorenm's avatar
lorenm committed
5832
            scan= s->qscale ? h->field_scan : h->field_scan_q0;
5833 5834
            dc_scan= luma_dc_field_scan;
        }else{
lorenm's avatar
lorenm committed
5835
            scan8x8= s->qscale ? h->zigzag_scan8x8 : h->zigzag_scan8x8_q0;
lorenm's avatar
lorenm committed
5836
            scan= s->qscale ? h->zigzag_scan : h->zigzag_scan_q0;
5837 5838 5839 5840
            dc_scan= luma_dc_zigzag_scan;
        }

        h->last_qscale_diff = dqp = decode_cabac_mb_dqp( h );
5841 5842 5843 5844
        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;
        }
5845 5846 5847 5848 5849
        s->qscale += dqp;
        if(((unsigned)s->qscale) > 51){
            if(s->qscale<0) s->qscale+= 52;
            else            s->qscale-= 52;
        }
5850 5851
        h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
        h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
5852 5853 5854 5855

        if( IS_INTRA16x16( mb_type ) ) {
            int i;
            //av_log( s->avctx, AV_LOG_ERROR, "INTRA16x16 DC\n" );
5856 5857
            decode_cabac_residual( h, h->mb, 0, 0, dc_scan, NULL, 16);

5858
            if( cbp&15 ) {
5859
                qmul = h->dequant4_coeff[0][s->qscale];
5860 5861
                for( i = 0; i < 16; i++ ) {
                    //av_log( s->avctx, AV_LOG_ERROR, "INTRA16x16 AC:%d\n", i );
5862
                    decode_cabac_residual(h, h->mb + 16*i, 1, i, scan + 1, qmul, 15);
5863 5864 5865 5866 5867 5868 5869 5870
                }
            } 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) ) {
lorenm's avatar
lorenm committed
5871
                    if( IS_8x8DCT(mb_type) ) {
5872 5873
                        decode_cabac_residual(h, h->mb + 64*i8x8, 5, 4*i8x8,
                            scan8x8, h->dequant8_coeff[IS_INTRA( mb_type ) ? 0:1][s->qscale], 64);
5874
                    } else {
andoma's avatar
andoma committed
5875 5876 5877 5878
                        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 );
5879
//START_TIMER
andoma's avatar
andoma committed
5880
                            decode_cabac_residual(h, h->mb + 16*index, 2, index, scan, qmul, 16);
5881
//STOP_TIMER("decode_residual")
andoma's avatar
andoma committed
5882
                        }
5883
                    }
5884 5885 5886 5887 5888 5889 5890 5891 5892 5893 5894
                } 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 );
5895
                decode_cabac_residual(h, h->mb + 256 + 16*4*c, 3, c, chroma_dc_scan, NULL, 4);
5896 5897 5898 5899 5900 5901
            }
        }

        if( cbp&0x20 ) {
            int c, i;
            for( c = 0; c < 2; c++ ) {
5902
                qmul = h->dequant4_coeff[c+1+(IS_INTRA( mb_type ) ? 0:3)][h->chroma_qp[c]];
5903 5904 5905
                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 );
5906
                    decode_cabac_residual(h, h->mb + 16*index, 4, index, scan + 1, qmul, 15);
5907 5908 5909 5910 5911 5912 5913 5914
                }
            }
        } 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 {
michael's avatar
michael committed
5915 5916 5917 5918
        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;
lorenm's avatar
lorenm committed
5919
        h->last_qscale_diff = 0;
5920 5921 5922 5923 5924
    }

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

lorenm's avatar
lorenm committed
5925 5926 5927 5928 5929
    if(MB_MBAFF){
        h->ref_count[0] >>= 1;
        h->ref_count[1] >>= 1;
    }

5930 5931 5932 5933
    return 0;
}


5934
static void filter_mb_edgev( H264Context *h, uint8_t *pix, int stride, int16_t bS[4], int qp ) {
5935 5936 5937
    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];
5938

lorenm's avatar
lorenm committed
5939
    if( bS[0] < 4 ) {
5940
        int8_t tc[4];
darkshikari's avatar
darkshikari committed
5941 5942 5943 5944
        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
5945 5946
        h->s.dsp.h264_h_loop_filter_luma(pix, stride, alpha, beta, tc);
    } else {
5947
        h->s.dsp.h264_h_loop_filter_luma_intra(pix, stride, alpha, beta);
5948 5949
    }
}
5950
static void filter_mb_edgecv( H264Context *h, uint8_t *pix, int stride, int16_t bS[4], int qp ) {
5951 5952 5953
    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];
5954

lorenm's avatar
lorenm committed
5955
    if( bS[0] < 4 ) {
5956
        int8_t tc[4];
darkshikari's avatar
darkshikari committed
5957 5958 5959 5960
        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
5961 5962
        h->s.dsp.h264_h_loop_filter_chroma(pix, stride, alpha, beta, tc);
    } else {
5963
        h->s.dsp.h264_h_loop_filter_chroma_intra(pix, stride, alpha, beta);
5964 5965 5966
    }
}

5967
static void filter_mb_mbaff_edgev( H264Context *h, uint8_t *pix, int stride, int16_t bS[8], int qp[2] ) {
5968 5969 5970 5971 5972
    int i;
    for( i = 0; i < 16; i++, pix += stride) {
        int index_a;
        int alpha;
        int beta;
5973

5974 5975
        int qp_index;
        int bS_index = (i >> 1);
lorenm's avatar
lorenm committed
5976
        if (!MB_FIELD) {
5977 5978 5979 5980 5981 5982 5983 5984
            bS_index &= ~1;
            bS_index |= (i & 1);
        }

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

lorenm's avatar
lorenm committed
5985
        qp_index = MB_FIELD ? (i >> 3) : (i & 1);
5986 5987 5988
        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];
5989 5990

        if( bS[bS_index] < 4 ) {
darkshikari's avatar
darkshikari committed
5991
            const int tc0 = (tc0_table+52)[index_a][bS[bS_index]];
5992 5993 5994 5995 5996 5997 5998
            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
5999 6000 6001
            if( FFABS( p0 - q0 ) < alpha &&
                FFABS( p1 - p0 ) < beta &&
                FFABS( q1 - q0 ) < beta ) {
6002 6003 6004
                int tc = tc0;
                int i_delta;

diego's avatar
diego committed
6005
                if( FFABS( p2 - p0 ) < beta ) {
reimar's avatar
reimar committed
6006
                    pix[-2] = p1 + av_clip( ( p2 + ( ( p0 + q0 + 1 ) >> 1 ) - ( p1 << 1 ) ) >> 1, -tc0, tc0 );
6007 6008
                    tc++;
                }
diego's avatar
diego committed
6009
                if( FFABS( q2 - q0 ) < beta ) {
reimar's avatar
reimar committed
6010
                    pix[1] = q1 + av_clip( ( q2 + ( ( p0 + q0 + 1 ) >> 1 ) - ( q1 << 1 ) ) >> 1, -tc0, tc0 );
6011 6012 6013
                    tc++;
                }

reimar's avatar
reimar committed
6014 6015 6016
                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' */
mbardiaux's avatar
mbardiaux committed
6017
                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);
6018 6019 6020 6021 6022 6023 6024 6025 6026 6027
            }
        }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
6028 6029 6030
            if( FFABS( p0 - q0 ) < alpha &&
                FFABS( p1 - p0 ) < beta &&
                FFABS( q1 - q0 ) < beta ) {
6031

diego's avatar
diego committed
6032 6033
                if(FFABS( p0 - q0 ) < (( alpha >> 2 ) + 2 )){
                    if( FFABS( p2 - p0 ) < beta)
6034 6035 6036 6037 6038 6039 6040 6041 6042 6043
                    {
                        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;
                    }
diego's avatar
diego committed
6044
                    if( FFABS( q2 - q0 ) < beta)
6045 6046 6047 6048 6049 6050 6051 6052 6053 6054 6055 6056 6057 6058 6059
                    {
                        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;
                }
mbardiaux's avatar
mbardiaux committed
6060
                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]);
6061 6062 6063 6064
            }
        }
    }
}
6065
static void filter_mb_mbaff_edgecv( H264Context *h, uint8_t *pix, int stride, int16_t bS[8], int qp[2] ) {
6066 6067 6068 6069 6070 6071 6072 6073 6074 6075 6076 6077 6078
    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
6079
        qp_index = MB_FIELD ? (i >> 2) : (i & 1);
6080 6081 6082
        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];
lorenm's avatar
lorenm committed
6083

6084
        if( bS[bS_index] < 4 ) {
darkshikari's avatar
darkshikari committed
6085
            const int tc = (tc0_table+52)[index_a][bS[bS_index]] + 1;
6086 6087 6088 6089 6090
            const int p0 = pix[-1];
            const int p1 = pix[-2];
            const int q0 = pix[0];
            const int q1 = pix[1];

diego's avatar
diego committed
6091 6092 6093
            if( FFABS( p0 - q0 ) < alpha &&
                FFABS( p1 - p0 ) < beta &&
                FFABS( q1 - q0 ) < beta ) {
reimar's avatar
reimar committed
6094
                const int i_delta = av_clip( (((q0 - p0 ) << 2) + (p1 - q1) + 4) >> 3, -tc, tc );
6095

reimar's avatar
reimar committed
6096 6097
                pix[-1] = av_clip_uint8( p0 + i_delta );    /* p0' */
                pix[0]  = av_clip_uint8( q0 - i_delta );    /* q0' */
mbardiaux's avatar
mbardiaux committed
6098
                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);
6099 6100 6101 6102 6103 6104 6105
            }
        }else{
            const int p0 = pix[-1];
            const int p1 = pix[-2];
            const int q0 = pix[0];
            const int q1 = pix[1];

diego's avatar
diego committed
6106 6107 6108
            if( FFABS( p0 - q0 ) < alpha &&
                FFABS( p1 - p0 ) < beta &&
                FFABS( q1 - q0 ) < beta ) {
6109 6110 6111

                pix[-1] = ( 2*p1 + p0 + q1 + 2 ) >> 2;   /* p0' */
                pix[0]  = ( 2*q1 + q0 + p1 + 2 ) >> 2;   /* q0' */
mbardiaux's avatar
mbardiaux committed
6112
                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]);
6113 6114 6115 6116 6117
            }
        }
    }
}

6118
static void filter_mb_edgeh( H264Context *h, uint8_t *pix, int stride, int16_t bS[4], int qp ) {
6119 6120 6121
    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];
6122

lorenm's avatar
lorenm committed
6123
    if( bS[0] < 4 ) {
6124
        int8_t tc[4];
darkshikari's avatar
darkshikari committed
6125 6126 6127 6128
        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
6129 6130
        h->s.dsp.h264_v_loop_filter_luma(pix, stride, alpha, beta, tc);
    } else {
6131
        h->s.dsp.h264_v_loop_filter_luma_intra(pix, stride, alpha, beta);
6132 6133 6134
    }
}

6135
static void filter_mb_edgech( H264Context *h, uint8_t *pix, int stride, int16_t bS[4], int qp ) {
6136 6137 6138
    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];
6139

lorenm's avatar
lorenm committed
6140
    if( bS[0] < 4 ) {
6141
        int8_t tc[4];
darkshikari's avatar
darkshikari committed
6142 6143 6144 6145
        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
6146 6147
        h->s.dsp.h264_v_loop_filter_chroma(pix, stride, alpha, beta, tc);
    } else {
6148
        h->s.dsp.h264_v_loop_filter_chroma_intra(pix, stride, alpha, beta);
6149 6150 6151
    }
}

6152 6153
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;
6154
    int mb_y_firstrow = s->picture_structure == PICT_BOTTOM_FIELD;
6155 6156 6157
    int mb_xy, mb_type;
    int qp, qp0, qp1, qpc, qpc0, qpc1, qp_thresh;

6158
    mb_xy = h->mb_xy;
6159

6160
    if(mb_x==0 || mb_y==mb_y_firstrow || !s->dsp.h264_loop_filter_strength || h->pps.chroma_qp_diff ||
6161
        !(s->flags2 & CODEC_FLAG2_FAST) || //FIXME filter_mb_fast is broken, thus hasto be, but should not under CODEC_FLAG2_FAST
6162 6163
       (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]))) {
6164 6165 6166 6167 6168 6169 6170 6171 6172
        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];
6173 6174 6175
    qpc = get_chroma_qp( h, 0, qp );
    qpc0 = get_chroma_qp( h, 0, qp0 );
    qpc1 = get_chroma_qp( h, 0, qp1 );
6176 6177 6178 6179
    qp0 = (qp + qp0 + 1) >> 1;
    qp1 = (qp + qp1 + 1) >> 1;
    qpc0 = (qpc + qpc0 + 1) >> 1;
    qpc1 = (qpc + qpc1 + 1) >> 1;
lorenm's avatar
lorenm committed
6180 6181 6182 6183
    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;
6184 6185 6186 6187

    if( IS_INTRA(mb_type) ) {
        int16_t bS4[4] = {4,4,4,4};
        int16_t bS3[4] = {3,3,3,3};
andoma's avatar
andoma committed
6188
        int16_t *bSH = FIELD_PICTURE ? bS3 : bS4;
6189 6190 6191
        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 );
andoma's avatar
andoma committed
6192
            filter_mb_edgeh( h, &img_y[4*0*linesize], linesize, bSH, qp1 );
6193 6194 6195 6196 6197 6198
            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 );
andoma's avatar
andoma committed
6199
            filter_mb_edgeh( h, &img_y[4*0*linesize], linesize, bSH, qp1 );
6200 6201 6202 6203 6204 6205 6206 6207
            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 );
andoma's avatar
andoma committed
6208
        filter_mb_edgech( h, &img_cb[2*0*uvlinesize], uvlinesize, bSH, qpc1 );
6209
        filter_mb_edgech( h, &img_cb[2*2*uvlinesize], uvlinesize, bS3, qpc );
andoma's avatar
andoma committed
6210
        filter_mb_edgech( h, &img_cr[2*0*uvlinesize], uvlinesize, bSH, qpc1 );
6211 6212 6213 6214 6215
        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;
lorenm's avatar
lorenm committed
6216 6217 6218 6219 6220 6221 6222 6223 6224 6225 6226 6227 6228
        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,
6229
                                              (h->slice_type_nos == FF_B_TYPE), edges, step, mask_edge0, mask_edge1, FIELD_PICTURE);
lorenm's avatar
lorenm committed
6230
        }
6231
        if( IS_INTRA(s->current_picture.mb_type[mb_xy-1]) )
6232
            bSv[0][0] = 0x0004000400040004ULL;
6233
        if( IS_INTRA(s->current_picture.mb_type[h->top_mb_xy]) )
6234
            bSv[1][0] = FIELD_PICTURE ? 0x0003000300030003ULL : 0x0004000400040004ULL;
6235 6236 6237 6238 6239 6240 6241 6242 6243 6244 6245 6246 6247 6248 6249 6250 6251 6252 6253 6254 6255 6256 6257 6258 6259 6260 6261 6262 6263 6264 6265

#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
    }
}

6266

6267
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) {
6268 6269 6270 6271 6272 6273 6274 6275 6276 6277 6278 6279 6280 6281 6282 6283 6284 6285 6286 6287 6288 6289 6290 6291 6292 6293 6294 6295 6296 6297 6298 6299 6300 6301 6302 6303 6304 6305 6306 6307 6308 6309 6310 6311 6312 6313 6314 6315 6316 6317 6318 6319 6320 6321 6322 6323 6324 6325 6326 6327 6328 6329 6330 6331 6332 6333 6334 6335 6336 6337 6338 6339 6340 6341 6342 6343 6344 6345 6346 6347 6348 6349 6350 6351 6352 6353 6354 6355 6356 6357 6358 6359 6360 6361 6362 6363 6364 6365 6366 6367 6368 6369 6370 6371 6372 6373 6374 6375 6376 6377 6378 6379 6380 6381 6382 6383 6384 6385 6386 6387 6388 6389 6390 6391 6392 6393 6394 6395 6396 6397 6398 6399 6400 6401 6402 6403 6404 6405 6406 6407
    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);

michael's avatar
michael committed
6408 6409
                if( h->non_zero_count_cache[b_idx] |
                    h->non_zero_count_cache[bn_idx] ) {
6410 6411 6412 6413 6414 6415 6416 6417 6418 6419 6420 6421 6422 6423 6424 6425 6426 6427 6428 6429 6430 6431 6432 6433 6434 6435 6436 6437 6438 6439 6440 6441 6442 6443 6444 6445 6446 6447 6448 6449 6450 6451 6452 6453 6454 6455 6456 6457 6458 6459 6460 6461 6462 6463 6464 6465 6466 6467 6468 6469
                    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);
            }
        }
    }
}

6470
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) {
6471 6472
    MpegEncContext * const s = &h->s;
    const int mb_xy= mb_x + mb_y*s->mb_stride;
lorenm's avatar
lorenm committed
6473 6474
    const int mb_type = s->current_picture.mb_type[mb_xy];
    const int mvy_limit = IS_INTERLACED(mb_type) ? 2 : 4;
6475
    int first_vertical_edge_done = 0;
6476
    av_unused int dir;
6477

lorenm's avatar
lorenm committed
6478 6479
    //for sufficiently low qp, filtering wouldn't do anything
    //this is a conservative estimate: could also check beta_offset and more accurate chroma_qp
lorenm's avatar
lorenm committed
6480
    if(!FRAME_MBAFF){
6481
        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]);
lorenm's avatar
lorenm committed
6482 6483 6484 6485 6486 6487 6488 6489
        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)
           && (mb_y == 0 || ((qp + s->current_picture.qscale_table[h->top_mb_xy] + 1)>>1) <= qp_thresh)){
            return;
        }
    }

michael's avatar
michael committed
6490 6491 6492 6493 6494 6495 6496 6497 6498 6499 6500 6501 6502 6503 6504 6505 6506 6507 6508 6509 6510 6511 6512 6513
    // 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   ]]=
michael's avatar
michael committed
6514
            h->non_zero_count_cache[scan8[2   ]]= h->non_zero_count_cache[scan8[3   ]]= h->cbp & 1;
michael's avatar
michael committed
6515 6516

            h->non_zero_count_cache[scan8[0+ 4]]= h->non_zero_count_cache[scan8[1+ 4]]=
michael's avatar
michael committed
6517
            h->non_zero_count_cache[scan8[2+ 4]]= h->non_zero_count_cache[scan8[3+ 4]]= h->cbp & 2;
michael's avatar
michael committed
6518 6519

            h->non_zero_count_cache[scan8[0+ 8]]= h->non_zero_count_cache[scan8[1+ 8]]=
michael's avatar
michael committed
6520
            h->non_zero_count_cache[scan8[2+ 8]]= h->non_zero_count_cache[scan8[3+ 8]]= h->cbp & 4;
michael's avatar
michael committed
6521 6522

            h->non_zero_count_cache[scan8[0+12]]= h->non_zero_count_cache[scan8[1+12]]=
michael's avatar
michael committed
6523
            h->non_zero_count_cache[scan8[2+12]]= h->non_zero_count_cache[scan8[3+12]]= h->cbp & 8;
michael's avatar
michael committed
6524 6525 6526
        }
    }

lorenm's avatar
lorenm committed
6527
    if (FRAME_MBAFF
6528
            // left mb is in picture
6529
            && h->slice_table[mb_xy-1] != 0xFFFF
6530
            // and current and left pair do not have the same interlaced type
lorenm's avatar
lorenm committed
6531
            && (IS_INTERLACED(mb_type) != IS_INTERLACED(s->current_picture.mb_type[mb_xy-1]))
6532 6533 6534
            // 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
6535
         * There are 8 different bS to compute and 2 different Qp
6536
         */
lorenm's avatar
lorenm committed
6537 6538
        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 };
6539
        int16_t bS[8];
6540
        int qp[2];
6541 6542
        int bqp[2];
        int rqp[2];
lorenm's avatar
lorenm committed
6543
        int mb_qp, mbn0_qp, mbn1_qp;
6544 6545
        int i;
        first_vertical_edge_done = 1;
lorenm's avatar
lorenm committed
6546 6547 6548 6549 6550 6551 6552 6553 6554 6555

        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 ||
michael's avatar
michael committed
6556 6557 6558 6559
                         ((!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]))
lorenm's avatar
lorenm committed
6560 6561 6562
                    bS[i] = 2;
                else
                    bS[i] = 1;
6563 6564 6565
            }
        }

lorenm's avatar
lorenm committed
6566 6567 6568 6569
        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;
6570 6571 6572 6573
        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;
lorenm's avatar
lorenm committed
6574
        qp[1] = ( mb_qp + mbn1_qp + 1 ) >> 1;
6575 6576 6577 6578
        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;
lorenm's avatar
lorenm committed
6579 6580

        /* Filter edge */
6581
        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);
mbardiaux's avatar
mbardiaux committed
6582
        { int i; for (i = 0; i < 8; i++) tprintf(s->avctx, " bS[%d]:%d", i, bS[i]); tprintf(s->avctx, "\n"); }
lorenm's avatar
lorenm committed
6583
        filter_mb_mbaff_edgev ( h, &img_y [0], linesize,   bS, qp );
6584 6585
        filter_mb_mbaff_edgecv( h, &img_cb[0], uvlinesize, bS, bqp );
        filter_mb_mbaff_edgecv( h, &img_cr[0], uvlinesize, bS, rqp );
6586
    }
6587

6588
#if CONFIG_SMALL
6589 6590 6591 6592 6593 6594
    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
6595 6596
}

6597 6598
static int decode_slice(struct AVCodecContext *avctx, void *arg){
    H264Context *h = *(void**)arg;
michaelni's avatar
michaelni committed
6599 6600 6601 6602 6603
    MpegEncContext * const s = &h->s;
    const int part_mask= s->partitioned_frame ? (AC_END|AC_ERROR) : 0x7F;

    s->mb_skip_run= -1;

6604
    h->is_complex = FRAME_MBAFF || s->picture_structure != PICT_FRAME || s->codec_id != CODEC_ID_H264 ||
mru's avatar
mru committed
6605
                    (CONFIG_GRAY && (s->flags&CODEC_FLAG_GRAY));
6606

6607 6608
    if( h->pps.cabac ) {
        int i;
michaelni's avatar
michaelni committed
6609

6610 6611 6612 6613
        /* realign */
        align_get_bits( &s->gb );

        /* init cabac */
6614
        ff_init_cabac_states( &h->cabac);
6615 6616
        ff_init_cabac_decoder( &h->cabac,
                               s->gb.buffer + get_bits_count(&s->gb)/8,
michael's avatar
michael committed
6617
                               ( s->gb.size_in_bits - get_bits_count(&s->gb) + 7)/8);
6618
        /* calculate pre-state */
lorenm's avatar
lorenm committed
6619
        for( i= 0; i < 460; i++ ) {
6620
            int pre;
6621
            if( h->slice_type_nos == FF_I_TYPE )
reimar's avatar
reimar committed
6622
                pre = av_clip( ((cabac_context_init_I[i][0] * s->qscale) >>4 ) + cabac_context_init_I[i][1], 1, 126 );
6623
            else
reimar's avatar
reimar committed
6624
                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 );
6625 6626

            if( pre <= 63 )
6627
                h->cabac_state[i] = 2 * ( 63 - pre ) + 0;
6628
            else
6629
                h->cabac_state[i] = 2 * ( pre - 64 ) + 1;
michaelni's avatar
michaelni committed
6630
        }
6631

6632
        for(;;){
6633
//START_TIMER
6634
            int ret = decode_mb_cabac(h);
6635
            int eos;
6636
//STOP_TIMER("decode_mb_cabac")
michaelni's avatar
michaelni committed
6637

michael's avatar
michael committed
6638
            if(ret>=0) hl_decode_mb(h);
michaelni's avatar
michaelni committed
6639

lorenm's avatar
lorenm committed
6640
            if( ret >= 0 && FRAME_MBAFF ) { //FIXME optimal? or let mb_decode decode 16x32 ?
6641 6642
                s->mb_y++;

michael's avatar
michael committed
6643
                ret = decode_mb_cabac(h);
6644

6645
                if(ret>=0) hl_decode_mb(h);
6646 6647
                s->mb_y--;
            }
6648
            eos = get_cabac_terminate( &h->cabac );
6649

6650
            if( ret < 0 || h->cabac.bytestream > h->cabac.bytestream_end + 2) {
mru's avatar
mru committed
6651
                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);
6652 6653 6654 6655 6656 6657 6658
                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);
michael's avatar
michael committed
6659
                ++s->mb_y;
6660
                if(FIELD_OR_MBAFF_PICTURE) {
6661 6662
                    ++s->mb_y;
                }
michaelni's avatar
michaelni committed
6663 6664
            }

6665
            if( eos || s->mb_y >= s->mb_height ) {
mbardiaux's avatar
mbardiaux committed
6666
                tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
6667
                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);
michaelni's avatar
michaelni committed
6668
                return 0;
6669 6670 6671 6672 6673 6674 6675
            }
        }

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

michael's avatar
michael committed
6676
            if(ret>=0) hl_decode_mb(h);
6677

lorenm's avatar
lorenm committed
6678
            if(ret>=0 && FRAME_MBAFF){ //FIXME optimal? or let mb_decode decode 16x32 ?
6679 6680 6681
                s->mb_y++;
                ret = decode_mb_cavlc(h);

michael's avatar
michael committed
6682
                if(ret>=0) hl_decode_mb(h);
6683 6684 6685 6686 6687
                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);
michaelni's avatar
michaelni committed
6688 6689 6690 6691
                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;
            }
6692 6693 6694 6695

            if(++s->mb_x >= s->mb_width){
                s->mb_x=0;
                ff_draw_horiz_band(s, 16*s->mb_y, 16);
6696
                ++s->mb_y;
6697
                if(FIELD_OR_MBAFF_PICTURE) {
6698 6699 6700
                    ++s->mb_y;
                }
                if(s->mb_y >= s->mb_height){
mbardiaux's avatar
mbardiaux committed
6701
                    tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
6702 6703 6704 6705 6706 6707 6708 6709 6710 6711 6712 6713 6714 6715

                    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){
mbardiaux's avatar
mbardiaux committed
6716
                tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
6717 6718 6719 6720 6721 6722 6723 6724 6725 6726
                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;
                }
            }
michaelni's avatar
michaelni committed
6727 6728
        }
    }
6729

michaelni's avatar
michaelni committed
6730 6731 6732 6733
#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);
6734

michaelni's avatar
michaelni committed
6735 6736 6737
            hl_decode_mb(h);

            if(ret<0){
diego's avatar
diego committed
6738
                av_log(s->avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
michaelni's avatar
michaelni committed
6739 6740 6741 6742
                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;
            }
6743

michaelni's avatar
michaelni committed
6744 6745 6746 6747 6748 6749 6750 6751 6752 6753 6754 6755 6756 6757
            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;
                    }
                }
            }
6758

michaelni's avatar
michaelni committed
6759 6760 6761 6762 6763 6764 6765 6766 6767 6768 6769 6770 6771 6772 6773 6774 6775 6776 6777
            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
}

6778 6779 6780
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){
6781
        h->sei_cpb_removal_delay = get_bits(&s->gb, h->sps.cpb_removal_delay_length);
6782
        h->sei_dpb_output_delay = get_bits(&s->gb, h->sps.dpb_output_delay_length);
6783 6784 6785 6786 6787 6788 6789 6790 6791 6792 6793 6794 6795 6796 6797 6798 6799 6800 6801 6802 6803 6804 6805 6806 6807 6808 6809 6810 6811 6812 6813 6814 6815 6816 6817 6818 6819 6820 6821 6822 6823 6824
    }
    if(h->sps.pic_struct_present_flag){
        unsigned int i, num_clock_ts;
        h->sei_pic_struct = get_bits(&s->gb, 4);

        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;
                skip_bits(&s->gb, 2);                 /* ct_type */
                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 */
            }
        }
    }
    return 0;
}

6825 6826 6827 6828
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;
6829

6830 6831
    if(size<16)
        return -1;
6832

6833 6834 6835
    for(i=0; i<sizeof(user_data)-1 && i<size; i++){
        user_data[i]= get_bits(&s->gb, 8);
    }
6836

6837 6838 6839 6840
    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;
6841

6842 6843 6844 6845 6846
    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);
6847

6848 6849 6850
    return 0;
}

6851 6852 6853 6854 6855 6856 6857 6858 6859
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;
}

6860 6861 6862 6863 6864 6865 6866 6867 6868 6869 6870 6871 6872 6873 6874 6875 6876 6877 6878 6879 6880 6881 6882 6883 6884 6885 6886 6887 6888 6889 6890
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;
}

6891
int ff_h264_decode_sei(H264Context *h){
6892
    MpegEncContext * const s = &h->s;
6893

6894 6895
    while(get_bits_count(&s->gb) + 16 < s->gb.size_in_bits){
        int size, type;
6896

6897 6898 6899 6900
        type=0;
        do{
            type+= show_bits(&s->gb, 8);
        }while(get_bits(&s->gb, 8) == 255);
6901

6902 6903 6904 6905
        size=0;
        do{
            size+= show_bits(&s->gb, 8);
        }while(get_bits(&s->gb, 8) == 255);
6906

6907
        switch(type){
6908
        case SEI_TYPE_PIC_TIMING: // Picture timing SEI
6909 6910 6911
            if(decode_picture_timing(h) < 0)
                return -1;
            break;
6912
        case SEI_TYPE_USER_DATA_UNREGISTERED:
michael's avatar
michael committed
6913
            if(decode_unregistered_user_data(h, size) < 0)
6914 6915
                return -1;
            break;
6916 6917 6918 6919
        case SEI_TYPE_RECOVERY_POINT:
            if(decode_recovery_point(h) < 0)
                return -1;
            break;
6920 6921 6922 6923
        case SEI_BUFFERING_PERIOD:
            if(decode_buffering_period(h) < 0)
                return -1;
            break;
6924 6925 6926
        default:
            skip_bits(&s->gb, 8*size);
        }
6927

6928 6929 6930 6931 6932 6933 6934
        //FIXME check bits here
        align_get_bits(&s->gb);
    }

    return 0;
}

6935
static inline int decode_hrd_parameters(H264Context *h, SPS *sps){
6936 6937
    MpegEncContext * const s = &h->s;
    int cpb_count, i;
6938
    cpb_count = get_ue_golomb_31(&s->gb) + 1;
6939 6940 6941 6942 6943 6944

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

6945 6946 6947 6948 6949 6950 6951
    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 */
    }
6952
    sps->initial_cpb_removal_delay_length = get_bits(&s->gb, 5) + 1;
6953 6954 6955
    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);
cehoyos's avatar
cehoyos committed
6956
    sps->cpb_cnt = cpb_count;
6957
    return 0;
6958 6959
}

michaelni's avatar
michaelni committed
6960 6961
static inline int decode_vui_parameters(H264Context *h, SPS *sps){
    MpegEncContext * const s = &h->s;
6962 6963
    int aspect_ratio_info_present_flag;
    unsigned int aspect_ratio_idc;
michaelni's avatar
michaelni committed
6964 6965

    aspect_ratio_info_present_flag= get_bits1(&s->gb);
6966

michaelni's avatar
michaelni committed
6967 6968 6969
    if( aspect_ratio_info_present_flag ) {
        aspect_ratio_idc= get_bits(&s->gb, 8);
        if( aspect_ratio_idc == EXTENDED_SAR ) {
michael's avatar
michael committed
6970 6971
            sps->sar.num= get_bits(&s->gb, 16);
            sps->sar.den= get_bits(&s->gb, 16);
6972
        }else if(aspect_ratio_idc < FF_ARRAY_ELEMS(pixel_aspect)){
michael's avatar
michael committed
6973
            sps->sar=  pixel_aspect[aspect_ratio_idc];
michaelni's avatar
michaelni committed
6974
        }else{
6975
            av_log(h->s.avctx, AV_LOG_ERROR, "illegal aspect ratio\n");
michaelni's avatar
michaelni committed
6976 6977 6978
            return -1;
        }
    }else{
6979
        sps->sar.num=
michael's avatar
michael committed
6980
        sps->sar.den= 0;
michaelni's avatar
michaelni committed
6981 6982
    }
//            s->avctx->aspect_ratio= sar_width*s->width / (float)(s->height*sar_height);
6983 6984 6985 6986 6987 6988 6989 6990 6991 6992 6993 6994 6995 6996 6997 6998 6999 7000 7001 7002 7003 7004 7005 7006 7007 7008 7009

    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 */
        get_ue_golomb(&s->gb);  /* chroma_sample_location_type_top_field */
        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);
        sps->fixed_frame_rate_flag = get_bits1(&s->gb);
    }

7010 7011
    sps->nal_hrd_parameters_present_flag = get_bits1(&s->gb);
    if(sps->nal_hrd_parameters_present_flag)
7012 7013
        if(decode_hrd_parameters(h, sps) < 0)
            return -1;
7014 7015
    sps->vcl_hrd_parameters_present_flag = get_bits1(&s->gb);
    if(sps->vcl_hrd_parameters_present_flag)
7016 7017
        if(decode_hrd_parameters(h, sps) < 0)
            return -1;
7018
    if(sps->nal_hrd_parameters_present_flag || sps->vcl_hrd_parameters_present_flag)
7019
        get_bits1(&s->gb);     /* low_delay_hrd_flag */
7020
    sps->pic_struct_present_flag = get_bits1(&s->gb);
7021 7022 7023 7024 7025 7026 7027 7028

    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 */
7029
        sps->num_reorder_frames= get_ue_golomb(&s->gb);
7030 7031
        get_ue_golomb(&s->gb); /*max_dec_frame_buffering*/

7032 7033
        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);
7034 7035
            return -1;
        }
7036 7037
    }

michaelni's avatar
michaelni committed
7038 7039 7040
    return 0;
}

7041 7042
static void decode_scaling_list(H264Context *h, uint8_t *factors, int size,
                                const uint8_t *jvt_list, const uint8_t *fallback_list){
lorenm's avatar
lorenm committed
7043 7044
    MpegEncContext * const s = &h->s;
    int i, last = 8, next = 8;
7045
    const uint8_t *scan = size == 16 ? zigzag_scan : ff_zigzag_direct;
7046 7047
    if(!get_bits1(&s->gb)) /* matrix not written, we use the predicted one */
        memcpy(factors, fallback_list, size*sizeof(uint8_t));
lorenm's avatar
lorenm committed
7048 7049 7050 7051
    else
    for(i=0;i<size;i++){
        if(next)
            next = (last + get_se_golomb(&s->gb)) & 0xff;
7052 7053
        if(!i && !next){ /* matrix not written, we use the preset one */
            memcpy(factors, jvt_list, size*sizeof(uint8_t));
lorenm's avatar
lorenm committed
7054 7055 7056 7057 7058 7059 7060 7061 7062 7063 7064 7065 7066 7067 7068 7069 7070 7071
            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;
7072 7073 7074 7075 7076 7077
        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
lorenm's avatar
lorenm committed
7078
        if(is_sps || pps->transform_8x8_mode){
7079 7080
            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
lorenm's avatar
lorenm committed
7081 7082 7083 7084
        }
    }
}

7085
int ff_h264_decode_seq_parameter_set(H264Context *h){
michaelni's avatar
michaelni committed
7086
    MpegEncContext * const s = &h->s;
michaelni's avatar
michaelni committed
7087
    int profile_idc, level_idc;
7088
    unsigned int sps_id;
7089
    int i;
michaelni's avatar
michaelni committed
7090
    SPS *sps;
7091

michaelni's avatar
michaelni committed
7092
    profile_idc= get_bits(&s->gb, 8);
michaelni's avatar
michaelni committed
7093 7094 7095
    get_bits1(&s->gb);   //constraint_set0_flag
    get_bits1(&s->gb);   //constraint_set1_flag
    get_bits1(&s->gb);   //constraint_set2_flag
michael's avatar
michael committed
7096 7097
    get_bits1(&s->gb);   //constraint_set3_flag
    get_bits(&s->gb, 4); // reserved
michaelni's avatar
michaelni committed
7098
    level_idc= get_bits(&s->gb, 8);
7099
    sps_id= get_ue_golomb_31(&s->gb);
7100

7101 7102 7103 7104 7105
    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));
benoit's avatar
 
benoit committed
7106
    if(sps == NULL)
7107 7108
        return -1;

michaelni's avatar
michaelni committed
7109 7110
    sps->profile_idc= profile_idc;
    sps->level_idc= level_idc;
michael's avatar
michael committed
7111

7112 7113 7114 7115
    memset(sps->scaling_matrix4, 16, sizeof(sps->scaling_matrix4));
    memset(sps->scaling_matrix8, 16, sizeof(sps->scaling_matrix8));
    sps->scaling_matrix_present = 0;

lorenm's avatar
lorenm committed
7116
    if(sps->profile_idc >= 100){ //high profile
7117
        sps->chroma_format_idc= get_ue_golomb_31(&s->gb);
7118
        if(sps->chroma_format_idc == 3)
7119 7120 7121
            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;
lorenm's avatar
lorenm committed
7122
        sps->transform_bypass = get_bits1(&s->gb);
lorenm's avatar
lorenm committed
7123
        decode_scaling_matrices(h, sps, NULL, 1, sps->scaling_matrix4, sps->scaling_matrix8);
7124 7125 7126
    }else{
        sps->chroma_format_idc= 1;
    }
lorenm's avatar
lorenm committed
7127

michaelni's avatar
michaelni committed
7128
    sps->log2_max_frame_num= get_ue_golomb(&s->gb) + 4;
7129
    sps->poc_type= get_ue_golomb_31(&s->gb);
7130

michaelni's avatar
michaelni committed
7131 7132 7133 7134 7135 7136
    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);
7137
        sps->poc_cycle_length                = get_ue_golomb(&s->gb);
7138

7139 7140
        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);
7141
            goto fail;
7142
        }
7143

michaelni's avatar
michaelni committed
7144 7145
        for(i=0; i<sps->poc_cycle_length; i++)
            sps->offset_for_ref_frame[i]= get_se_golomb(&s->gb);
7146
    }else if(sps->poc_type != 2){
7147
        av_log(h->s.avctx, AV_LOG_ERROR, "illegal POC type %d\n", sps->poc_type);
7148
        goto fail;
michaelni's avatar
michaelni committed
7149 7150
    }

7151
    sps->ref_frame_count= get_ue_golomb_31(&s->gb);
7152
    if(sps->ref_frame_count > MAX_PICTURE_COUNT-2 || sps->ref_frame_count >= 32U){
7153
        av_log(h->s.avctx, AV_LOG_ERROR, "too many reference frames\n");
7154
        goto fail;
7155
    }
michaelni's avatar
michaelni committed
7156
    sps->gaps_in_frame_num_allowed_flag= get_bits1(&s->gb);
7157 7158 7159 7160
    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)){
7161
        av_log(h->s.avctx, AV_LOG_ERROR, "mb_width/height overflow\n");
7162
        goto fail;
7163
    }
7164

michaelni's avatar
michaelni committed
7165 7166 7167 7168 7169 7170 7171 7172
    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
7173 7174
#ifndef ALLOW_INTERLACE
    if(sps->mb_aff)
diego's avatar
diego committed
7175
        av_log(h->s.avctx, AV_LOG_ERROR, "MBAFF support not included; enable it at compile-time.\n");
lorenm's avatar
lorenm committed
7176
#endif
michaelni's avatar
michaelni committed
7177 7178 7179 7180 7181 7182 7183
    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){
7184
            av_log(h->s.avctx, AV_LOG_ERROR, "insane cropping not completely supported, this could look slightly wrong ...\n");
michaelni's avatar
michaelni committed
7185
        }
7186
        if(sps->crop_right >= 8 || sps->crop_bottom >= (8>> !sps->frame_mbs_only_flag)){
7187 7188
            av_log(h->s.avctx, AV_LOG_ERROR, "brainfart cropping not supported, this could look slightly wrong ...\n");
        }
michaelni's avatar
michaelni committed
7189
    }else{
7190 7191 7192
        sps->crop_left  =
        sps->crop_right =
        sps->crop_top   =
michaelni's avatar
michaelni committed
7193 7194 7195
        sps->crop_bottom= 0;
    }

michaelni's avatar
michaelni committed
7196 7197 7198
    sps->vui_parameters_present_flag= get_bits1(&s->gb);
    if( sps->vui_parameters_present_flag )
        decode_vui_parameters(h, sps);
7199

michaelni's avatar
michaelni committed
7200
    if(s->avctx->debug&FF_DEBUG_PICT_INFO){
7201
        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\n",
michaelni's avatar
michaelni committed
7202 7203 7204 7205 7206 7207
               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" : "",
7208 7209
               sps->crop_left, sps->crop_right,
               sps->crop_top, sps->crop_bottom,
7210 7211
               sps->vui_parameters_present_flag ? "VUI" : "",
               ((const char*[]){"Gray","420","422","444"})[sps->chroma_format_idc]
michaelni's avatar
michaelni committed
7212 7213
               );
    }
7214

7215 7216
    av_free(h->sps_buffers[sps_id]);
    h->sps_buffers[sps_id]= sps;
7217
    h->sps = *sps;
michaelni's avatar
michaelni committed
7218
    return 0;
7219 7220 7221
fail:
    av_free(sps);
    return -1;
michaelni's avatar
michaelni committed
7222 7223
}

7224
static void
7225
build_qp_table(PPS *pps, int t, int index)
7226 7227
{
    int i;
7228 7229
    for(i = 0; i < 52; i++)
        pps->chroma_qp_table[t][i] = chroma_qp[av_clip(i + index, 0, 51)];
7230 7231
}

7232
int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length){
michaelni's avatar
michaelni committed
7233
    MpegEncContext * const s = &h->s;
7234
    unsigned int pps_id= get_ue_golomb(&s->gb);
7235 7236
    PPS *pps;

7237 7238
    if(pps_id >= MAX_PPS_COUNT) {
        av_log(h->s.avctx, AV_LOG_ERROR, "pps_id (%d) out of range\n", pps_id);
7239
        return -1;
7240
    }
7241

7242 7243 7244
    pps= av_mallocz(sizeof(PPS));
    if(pps == NULL)
        return -1;
7245
    pps->sps_id= get_ue_golomb_31(&s->gb);
7246 7247 7248 7249
    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;
    }
7250

michaelni's avatar
michaelni committed
7251 7252 7253 7254 7255
    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);
7256
        av_log(h->s.avctx, AV_LOG_ERROR, "FMO not supported\n");
michaelni's avatar
michaelni committed
7257 7258 7259 7260 7261 7262 7263 7264 7265 7266 7267 7268 7269 7270 7271 7272 7273 7274 7275 7276 7277 7278 7279 7280 7281 7282 7283 7284 7285 7286 7287
        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
7288
            break;
michaelni's avatar
michaelni committed
7289 7290 7291 7292
        }
    }
    pps->ref_count[0]= get_ue_golomb(&s->gb) + 1;
    pps->ref_count[1]= get_ue_golomb(&s->gb) + 1;
michael's avatar
michael committed
7293
    if(pps->ref_count[0]-1 > 32-1 || pps->ref_count[1]-1 > 32-1){
7294
        av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow (pps)\n");
7295
        goto fail;
michaelni's avatar
michaelni committed
7296
    }
7297

michaelni's avatar
michaelni committed
7298 7299 7300 7301
    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;
7302
    pps->chroma_qp_index_offset[0]= get_se_golomb(&s->gb);
michaelni's avatar
michaelni committed
7303 7304 7305
    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);
7306

7307 7308
    pps->transform_8x8_mode= 0;
    h->dequant_coeff_pps= -1; //contents of sps/pps can change even if id doesn't, so reinit
7309 7310
    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));
lorenm's avatar
lorenm committed
7311 7312 7313

    if(get_bits_count(&s->gb) < bit_length){
        pps->transform_8x8_mode= get_bits1(&s->gb);
benoit's avatar
 
benoit committed
7314
        decode_scaling_matrices(h, h->sps_buffers[pps->sps_id], pps, 0, pps->scaling_matrix4, pps->scaling_matrix8);
7315 7316 7317
        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];
lorenm's avatar
lorenm committed
7318
    }
7319

7320
    build_qp_table(pps, 0, pps->chroma_qp_index_offset[0]);
7321 7322
    build_qp_table(pps, 1, pps->chroma_qp_index_offset[1]);
    if(pps->chroma_qp_index_offset[0] != pps->chroma_qp_index_offset[1])
7323 7324
        h->pps.chroma_qp_diff= 1;

michaelni's avatar
michaelni committed
7325
    if(s->avctx->debug&FF_DEBUG_PICT_INFO){
7326
        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
7327 7328 7329 7330 7331
               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" : "",
7332
               pps->init_qp, pps->init_qs, pps->chroma_qp_index_offset[0], pps->chroma_qp_index_offset[1],
michaelni's avatar
michaelni committed
7333 7334
               pps->deblocking_filter_parameters_present ? "LPAR" : "",
               pps->constrained_intra_pred ? "CONSTR" : "",
lorenm's avatar
lorenm committed
7335 7336
               pps->redundant_pic_cnt_present ? "REDU" : "",
               pps->transform_8x8_mode ? "8x8DCT" : ""
michaelni's avatar
michaelni committed
7337 7338
               );
    }
7339

7340 7341
    av_free(h->pps_buffers[pps_id]);
    h->pps_buffers[pps_id]= pps;
michaelni's avatar
michaelni committed
7342
    return 0;
7343 7344 7345
fail:
    av_free(pps);
    return -1;
michaelni's avatar
michaelni committed
7346 7347
}

7348 7349 7350 7351 7352 7353 7354 7355 7356 7357 7358 7359
/**
 * 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;

7360 7361
    if (s->avctx->hwaccel)
        return;
cehoyos's avatar
cehoyos committed
7362
    if(s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
7363
        return;
7364
    if(context_count == 1) {
cehoyos's avatar
cehoyos committed
7365
        decode_slice(avctx, &h);
7366 7367 7368
    } else {
        for(i = 1; i < context_count; i++) {
            hx = h->thread_context[i];
7369
            hx->s.error_recognition = avctx->error_recognition;
7370 7371 7372 7373
            hx->s.error_count = 0;
        }

        avctx->execute(avctx, (void *)decode_slice,
7374
                       (void **)h->thread_context, NULL, context_count, sizeof(void*));
7375 7376 7377 7378 7379

        /* 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;
7380 7381
        s->dropable = hx->s.dropable;
        s->picture_structure = hx->s.picture_structure;
7382 7383 7384 7385 7386 7387
        for(i = 1; i < context_count; i++)
            h->s.error_count += h->thread_context[i]->s.error_count;
    }
}


michael's avatar
michael committed
7388
static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
michaelni's avatar
michaelni committed
7389 7390 7391
    MpegEncContext * const s = &h->s;
    AVCodecContext * const avctx= s->avctx;
    int buf_index=0;
7392 7393 7394 7395
    H264Context *hx; ///< thread context
    int context_count = 0;

    h->max_contexts = avctx->thread_count;
michaelni's avatar
michaelni committed
7396
#if 0
al3x's avatar
al3x committed
7397
    int i;
7398 7399
    for(i=0; i<50; i++){
        av_log(NULL, AV_LOG_ERROR,"%02X ", buf[i]);
michaelni's avatar
michaelni committed
7400 7401
    }
#endif
7402
    if(!(s->flags2 & CODEC_FLAG2_CHUNKS)){
7403
        h->current_slice = 0;
7404
        if (!s->first_field)
andoma's avatar
andoma committed
7405
            s->current_picture_ptr= NULL;
7406 7407
    }

michaelni's avatar
michaelni committed
7408 7409 7410 7411
    for(;;){
        int consumed;
        int dst_length;
        int bit_length;
michael's avatar
michael committed
7412
        const uint8_t *ptr;
7413
        int i, nalsize = 0;
7414
        int err;
7415

benoit's avatar
benoit committed
7416 7417 7418 7419 7420 7421 7422 7423 7424 7425 7426 7427 7428 7429 7430 7431 7432 7433 7434 7435
        if(h->is_avc) {
            if(buf_index >= buf_size) break;
            nalsize = 0;
            for(i = 0; i < h->nal_length_size; i++)
                nalsize = (nalsize << 8) | buf[buf_index++];
            if(nalsize <= 1 || (nalsize+buf_index > buf_size)){
                if(nalsize == 1){
                    buf_index++;
                    continue;
                }else{
                    av_log(h->s.avctx, AV_LOG_ERROR, "AVC: nal size %d\n", nalsize);
                    break;
                }
            }
        } 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;
7436
            }
7437

benoit's avatar
benoit committed
7438
            if(buf_index+3 >= buf_size) break;
7439

benoit's avatar
benoit committed
7440 7441
            buf_index+=3;
        }
7442

7443 7444
        hx = h->thread_context[context_count];

7445
        ptr= ff_h264_decode_nal(hx, buf + buf_index, &dst_length, &consumed, h->is_avc ? nalsize : buf_size - buf_index);
7446
        if (ptr==NULL || dst_length < 0){
7447 7448
            return -1;
        }
7449
        while(ptr[dst_length - 1] == 0 && dst_length > 0)
7450
            dst_length--;
7451
        bit_length= !dst_length ? 0 : (8*dst_length - ff_h264_decode_rbsp_trailing(h, ptr + dst_length - 1));
michaelni's avatar
michaelni committed
7452 7453

        if(s->avctx->debug&FF_DEBUG_STARTCODE){
7454
            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
7455
        }
7456

7457
        if (h->is_avc && (nalsize != consumed)){
7458 7459 7460 7461 7462
            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);
7463 7464
            consumed= nalsize;
        }
7465

michaelni's avatar
michaelni committed
7466 7467
        buf_index += consumed;

diego's avatar
diego committed
7468
        if(  (s->hurry_up == 1 && h->nal_ref_idc  == 0) //FIXME do not discard SEI id
michael's avatar
michael committed
7469
           ||(avctx->skip_frame >= AVDISCARD_NONREF && h->nal_ref_idc  == 0))
michaelni's avatar
michaelni committed
7470
            continue;
7471

7472 7473 7474
      again:
        err = 0;
        switch(hx->nal_unit_type){
michaelni's avatar
michaelni committed
7475
        case NAL_IDR_SLICE:
7476 7477 7478 7479
            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;
            }
7480
            idr(h); //FIXME ensure we don't loose some frames if there is reordering
michaelni's avatar
michaelni committed
7481
        case NAL_SLICE:
7482 7483 7484 7485 7486 7487 7488 7489
            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;

7490 7491 7492
            s->current_picture_ptr->key_frame |=
                    (hx->nal_unit_type == NAL_IDR_SLICE) ||
                    (h->sei_recovery_frame_cnt >= 0);
7493 7494
            if(hx->redundant_pic_count==0 && hx->s.hurry_up < 5
               && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
7495
               && (avctx->skip_frame < AVDISCARD_BIDIR  || hx->slice_type_nos!=FF_B_TYPE)
7496
               && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
7497
               && avctx->skip_frame < AVDISCARD_ALL){
cehoyos's avatar
cehoyos committed
7498
                if(CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU){
7499
                    static const uint8_t start_code[] = {0x00, 0x00, 0x01};
7500 7501
                    ff_vdpau_add_data_chunk(s, start_code, sizeof(start_code));
                    ff_vdpau_add_data_chunk(s, &buf[buf_index - consumed], consumed );
7502
                }else
cehoyos's avatar
cehoyos committed
7503
                    context_count++;
7504
            }
michaelni's avatar
michaelni committed
7505 7506
            break;
        case NAL_DPA:
7507 7508 7509 7510
            init_get_bits(&hx->s.gb, ptr, bit_length);
            hx->intra_gb_ptr=
            hx->inter_gb_ptr= NULL;
            hx->s.data_partitioning = 1;
7511

7512
            err = decode_slice_header(hx, h);
michaelni's avatar
michaelni committed
7513 7514
            break;
        case NAL_DPB:
7515 7516
            init_get_bits(&hx->intra_gb, ptr, bit_length);
            hx->intra_gb_ptr= &hx->intra_gb;
michaelni's avatar
michaelni committed
7517 7518
            break;
        case NAL_DPC:
7519 7520
            init_get_bits(&hx->inter_gb, ptr, bit_length);
            hx->inter_gb_ptr= &hx->inter_gb;
michaelni's avatar
michaelni committed
7521

7522
            if(hx->redundant_pic_count==0 && hx->intra_gb_ptr && hx->s.data_partitioning
7523
               && s->context_initialized
michael's avatar
michael committed
7524
               && s->hurry_up < 5
7525
               && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
7526
               && (avctx->skip_frame < AVDISCARD_BIDIR  || hx->slice_type_nos!=FF_B_TYPE)
7527
               && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
michael's avatar
michael committed
7528
               && avctx->skip_frame < AVDISCARD_ALL)
7529
                context_count++;
michaelni's avatar
michaelni committed
7530 7531
            break;
        case NAL_SEI:
7532
            init_get_bits(&s->gb, ptr, bit_length);
7533
            ff_h264_decode_sei(h);
michaelni's avatar
michaelni committed
7534 7535 7536
            break;
        case NAL_SPS:
            init_get_bits(&s->gb, ptr, bit_length);
7537
            ff_h264_decode_seq_parameter_set(h);
7538

michaelni's avatar
michaelni committed
7539 7540
            if(s->flags& CODEC_FLAG_LOW_DELAY)
                s->low_delay=1;
7541

7542 7543
            if(avctx->has_b_frames < 2)
                avctx->has_b_frames= !s->low_delay;
michaelni's avatar
michaelni committed
7544 7545 7546
            break;
        case NAL_PPS:
            init_get_bits(&s->gb, ptr, bit_length);
7547

7548
            ff_h264_decode_picture_parameter_set(h, bit_length);
michaelni's avatar
michaelni committed
7549 7550

            break;
lorenm's avatar
lorenm committed
7551 7552 7553 7554 7555 7556
        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
7557
            break;
7558
        default:
7559
            av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n", h->nal_unit_type, bit_length);
7560 7561
        }

7562 7563 7564 7565 7566 7567 7568 7569 7570 7571
        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
7572
             * rbsp_buffer is not transferred, but since we no longer
7573 7574 7575 7576 7577 7578 7579 7580 7581
             * 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);
michaelni's avatar
michaelni committed
7582 7583 7584 7585
    return buf_index;
}

/**
7586
 * returns the number of bytes consumed for building the current frame
michaelni's avatar
michaelni committed
7587 7588
 */
static int get_consumed_bytes(MpegEncContext *s, int pos, int buf_size){
diego's avatar
diego committed
7589
        if(pos==0) pos=1; //avoid infinite loops (i doubt that is needed but ...)
michaelni's avatar
michaelni committed
7590 7591 7592 7593 7594
        if(pos+10>buf_size) pos=buf_size; // oops ;)

        return pos;
}

7595
static int decode_frame(AVCodecContext *avctx,
michaelni's avatar
michaelni committed
7596
                             void *data, int *data_size,
michael's avatar
michael committed
7597
                             const uint8_t *buf, int buf_size)
michaelni's avatar
michaelni committed
7598 7599 7600
{
    H264Context *h = avctx->priv_data;
    MpegEncContext *s = &h->s;
7601
    AVFrame *pict = data;
michaelni's avatar
michaelni committed
7602
    int buf_index;
7603

michaelni's avatar
michaelni committed
7604
    s->flags= avctx->flags;
7605
    s->flags2= avctx->flags2;
michaelni's avatar
michaelni committed
7606

diego's avatar
diego committed
7607
   /* end of stream, output what is still in the buffers */
michaelni's avatar
michaelni committed
7608
    if (buf_size == 0) {
michael's avatar
michael committed
7609 7610 7611 7612 7613 7614
        Picture *out;
        int i, out_idx;

//FIXME factorize this with the output code below
        out = h->delayed_pic[0];
        out_idx = 0;
7615
        for(i=1; h->delayed_pic[i] && (h->delayed_pic[i]->poc && !h->delayed_pic[i]->key_frame); i++)
michael's avatar
michael committed
7616 7617 7618 7619 7620 7621 7622 7623 7624 7625 7626 7627 7628
            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
7629 7630
        return 0;
    }
7631

7632 7633 7634 7635 7636 7637 7638 7639 7640 7641 7642 7643 7644 7645 7646 7647 7648 7649
    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++) {
7650
            nalsize = AV_RB16(p) + 2;
7651
            if(decode_nal_units(h, p, nalsize) < 0) {
7652 7653 7654 7655
                av_log(avctx, AV_LOG_ERROR, "Decoding sps %d from avcC failed\n", i);
                return -1;
            }
            p += nalsize;
7656
        }
7657 7658 7659
        // Decode pps from avcC
        cnt = *(p++); // Number of pps
        for (i = 0; i < cnt; i++) {
7660
            nalsize = AV_RB16(p) + 2;
7661 7662 7663 7664 7665
            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;
7666
        }
7667 7668 7669 7670 7671 7672
        // 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;
    }

7673
    if(!h->got_avcC && !h->is_avc && s->avctx->extradata_size){
7674
        if(decode_nal_units(h, s->avctx->extradata, s->avctx->extradata_size) < 0)
michaelni's avatar
michaelni committed
7675
            return -1;
7676
        h->got_avcC = 1;
michaelni's avatar
michaelni committed
7677 7678 7679
    }

    buf_index=decode_nal_units(h, buf, buf_size);
7680
    if(buf_index < 0)
michaelni's avatar
michaelni committed
7681 7682
        return -1;

7683
    if(!(s->flags2 & CODEC_FLAG2_CHUNKS) && !s->current_picture_ptr){
7684
        if (avctx->skip_frame >= AVDISCARD_NONREF || s->hurry_up) return 0;
7685 7686 7687 7688
        av_log(avctx, AV_LOG_ERROR, "no frame!\n");
        return -1;
    }

7689 7690 7691 7692
    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;
7693

7694 7695 7696 7697 7698
        s->mb_y= 0;

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

cehoyos's avatar
cehoyos committed
7699
        if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
7700
            ff_vdpau_h264_set_reference_frames(s);
7701

7702
        if(!s->dropable) {
michael's avatar
michael committed
7703
            execute_ref_pic_marking(h, h->mmco, h->mmco_index);
7704 7705
            h->prev_poc_msb= h->poc_msb;
            h->prev_poc_lsb= h->poc_lsb;
7706
        }
michael's avatar
michael committed
7707 7708
        h->prev_frame_num_offset= h->frame_num_offset;
        h->prev_frame_num= h->frame_num;
7709

cehoyos's avatar
cehoyos committed
7710
        if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
7711
            ff_vdpau_h264_picture_complete(s);
7712

7713 7714 7715 7716 7717 7718 7719 7720 7721 7722 7723 7724
        /*
         * 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.
         */
7725
        if (!FIELD_PICTURE)
andoma's avatar
andoma committed
7726
            ff_er_frame_end(s);
7727 7728

        MPV_frame_end(s);
7729
        h->sei_recovery_frame_cnt = -1;
7730
        h->sei_dpb_output_delay = 0;
7731
        h->sei_cpb_removal_delay = -1;
7732
        h->sei_buffering_period_present = 0;
7733

7734
        if (cur->field_poc[0]==INT_MAX || cur->field_poc[1]==INT_MAX) {
7735 7736 7737 7738
            /* Wait for second field. */
            *data_size = 0;

        } else {
7739 7740 7741 7742 7743 7744 7745 7746 7747 7748 7749 7750 7751 7752 7753 7754 7755 7756 7757 7758 7759 7760 7761 7762 7763 7764 7765 7766 7767 7768 7769 7770 7771 7772 7773 7774 7775 7776 7777 7778 7779 7780 7781 7782 7783 7784 7785 7786 7787 7788 7789 7790 7791 7792
            cur->repeat_pict = 0;

            /* Signal interlacing information externally. */
            /* Prioritize picture timing SEI information over used decoding process if it exists. */
            if(h->sps.pic_struct_present_flag){
                switch (h->sei_pic_struct)
                {
                case SEI_PIC_STRUCT_FRAME:
                    cur->interlaced_frame = 0;
                    break;
                case SEI_PIC_STRUCT_TOP_FIELD:
                case SEI_PIC_STRUCT_BOTTOM_FIELD:
                case SEI_PIC_STRUCT_TOP_BOTTOM:
                case SEI_PIC_STRUCT_BOTTOM_TOP:
                    cur->interlaced_frame = 1;
                    break;
                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;
                    cur->interlaced_frame = FIELD_OR_MBAFF_PICTURE;
                    break;
                case SEI_PIC_STRUCT_FRAME_DOUBLING:
                    // Force progressive here, as doubling interlaced frame is a bad idea.
                    cur->interlaced_frame = 0;
                    cur->repeat_pict = 2;
                    break;
                case SEI_PIC_STRUCT_FRAME_TRIPLING:
                    cur->interlaced_frame = 0;
                    cur->repeat_pict = 4;
                    break;
                }
            }else{
                /* Derive interlacing flag from used decoding process. */
                cur->interlaced_frame = FIELD_OR_MBAFF_PICTURE;
            }

            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;
                }
            }
7793

andoma's avatar
andoma committed
7794
        //FIXME do something with unavailable reference frames
michaelni's avatar
michaelni committed
7795

andoma's avatar
andoma committed
7796
            /* Sort B-frames into display order */
7797

andoma's avatar
andoma committed
7798 7799 7800 7801 7802
            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;
            }
7803

7804 7805 7806 7807 7808 7809
            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;
            }

andoma's avatar
andoma committed
7810 7811
            pics = 0;
            while(h->delayed_pic[pics]) pics++;
7812

7813
            assert(pics <= MAX_DELAYED_PIC_COUNT);
7814

andoma's avatar
andoma committed
7815 7816 7817
            h->delayed_pic[pics++] = cur;
            if(cur->reference == 0)
                cur->reference = DELAYED_PIC_REF;
7818

andoma's avatar
andoma committed
7819 7820
            out = h->delayed_pic[0];
            out_idx = 0;
7821
            for(i=1; h->delayed_pic[i] && (h->delayed_pic[i]->poc && !h->delayed_pic[i]->key_frame); i++)
andoma's avatar
andoma committed
7822 7823 7824 7825
                if(h->delayed_pic[i]->poc < out->poc){
                    out = h->delayed_pic[i];
                    out_idx = i;
                }
7826
            cross_idr = !h->delayed_pic[0]->poc || !!h->delayed_pic[i] || h->delayed_pic[0]->key_frame;
lorenm's avatar
lorenm committed
7827

7828
            out_of_order = !cross_idr && out->poc < h->outputed_poc;
7829

andoma's avatar
andoma committed
7830 7831
            if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames >= h->sps.num_reorder_frames)
                { }
7832
            else if((out_of_order && pics-1 == s->avctx->has_b_frames && s->avctx->has_b_frames < MAX_DELAYED_PIC_COUNT)
andoma's avatar
andoma committed
7833
               || (s->low_delay &&
7834
                ((!cross_idr && out->poc > h->outputed_poc + 2)
7835
                 || cur->pict_type == FF_B_TYPE)))
andoma's avatar
andoma committed
7836 7837 7838 7839 7840 7841
            {
                s->low_delay = 0;
                s->avctx->has_b_frames++;
            }

            if(out_of_order || pics > s->avctx->has_b_frames){
michael's avatar
michael committed
7842
                out->reference &= ~DELAYED_PIC_REF;
andoma's avatar
andoma committed
7843 7844 7845
                for(i=out_idx; h->delayed_pic[i]; i++)
                    h->delayed_pic[i] = h->delayed_pic[i+1];
            }
michael's avatar
michael committed
7846
            if(!out_of_order && pics > s->avctx->has_b_frames){
andoma's avatar
andoma committed
7847
                *data_size = sizeof(AVFrame);
7848 7849

                h->outputed_poc = out->poc;
andoma's avatar
andoma committed
7850
                *pict= *(AVFrame*)out;
michael's avatar
michael committed
7851
            }else{
andoma's avatar
andoma committed
7852
                av_log(avctx, AV_LOG_DEBUG, "no picture\n");
michael's avatar
michael committed
7853
            }
7854
        }
lorenm's avatar
lorenm committed
7855 7856
    }

7857
    assert(pict->data[0] || !*data_size);
7858
    ff_print_debug_info(s, pict);
michaelni's avatar
michaelni committed
7859 7860 7861 7862
//printf("out %d\n", (int)pict->data[0]);
#if 0 //?

    /* Return the Picture timestamp as the frame number */
vitor's avatar
vitor committed
7863
    /* we subtract 1 because it is added on utils.c     */
michaelni's avatar
michaelni committed
7864 7865 7866 7867 7868 7869 7870
    avctx->frame_number = s->picture_number - 1;
#endif
    return get_consumed_bytes(s, buf_index, buf_size);
}
#if 0
static inline void fill_mb_avail(H264Context *h){
    MpegEncContext * const s = &h->s;
7871
    const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
michaelni's avatar
michaelni committed
7872 7873

    if(s->mb_y){
7874 7875 7876
        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;
michaelni's avatar
michaelni committed
7877 7878 7879 7880 7881 7882 7883 7884 7885 7886 7887
    }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

7888
#ifdef TEST
7889
#undef printf
7890
#undef random
michaelni's avatar
michaelni committed
7891 7892
#define COUNT 8000
#define SIZE (COUNT*40)
diego's avatar
diego committed
7893
int main(void){
michaelni's avatar
michaelni committed
7894 7895 7896 7897 7898 7899 7900
    int i;
    uint8_t temp[SIZE];
    PutBitContext pb;
    GetBitContext gb;
//    int int_temp[10000];
    DSPContext dsp;
    AVCodecContext avctx;
7901

michaelni's avatar
michaelni committed
7902 7903
    dsputil_init(&dsp, &avctx);

7904
    init_put_bits(&pb, temp, SIZE);
michaelni's avatar
michaelni committed
7905 7906 7907 7908 7909 7910 7911
    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);
7912

michaelni's avatar
michaelni committed
7913 7914 7915
    init_get_bits(&gb, temp, 8*SIZE);
    for(i=0; i<COUNT; i++){
        int j, s;
7916

michaelni's avatar
michaelni committed
7917
        s= show_bits(&gb, 24);
7918

michaelni's avatar
michaelni committed
7919 7920 7921
        START_TIMER
        j= get_ue_golomb(&gb);
        if(j != i){
diego's avatar
diego committed
7922
            printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
michaelni's avatar
michaelni committed
7923 7924 7925 7926
//            return -1;
        }
        STOP_TIMER("get_ue_golomb");
    }
7927 7928


alex's avatar
10l  
alex committed
7929
    init_put_bits(&pb, temp, SIZE);
michaelni's avatar
michaelni committed
7930 7931 7932 7933 7934 7935 7936
    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);
7937

michaelni's avatar
michaelni committed
7938 7939 7940
    init_get_bits(&gb, temp, 8*SIZE);
    for(i=0; i<COUNT; i++){
        int j, s;
7941

michaelni's avatar
michaelni committed
7942
        s= show_bits(&gb, 24);
7943

michaelni's avatar
michaelni committed
7944 7945 7946
        START_TIMER
        j= get_se_golomb(&gb);
        if(j != i - COUNT/2){
diego's avatar
diego committed
7947
            printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
michaelni's avatar
michaelni committed
7948 7949 7950 7951 7952
//            return -1;
        }
        STOP_TIMER("get_se_golomb");
    }

7953
#if 0
michaelni's avatar
michaelni committed
7954
    printf("testing 4x4 (I)DCT\n");
7955

michaelni's avatar
michaelni committed
7956 7957 7958 7959 7960 7961 7962 7963 7964 7965 7966 7967 7968
    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);
7969

michaelni's avatar
michaelni committed
7970 7971 7972 7973 7974 7975 7976 7977
        //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");
7978

7979
        s->dsp.h264_idct_add(ref, block, 4);
michaelni's avatar
michaelni committed
7980 7981 7982 7983
/*        for(j=0; j<16; j++){
            printf("%d ", ref[j]);
        }
        printf("\n");*/
7984

michaelni's avatar
michaelni committed
7985
        for(j=0; j<16; j++){
diego's avatar
diego committed
7986
            int diff= FFABS(src[j] - ref[j]);
7987

michaelni's avatar
michaelni committed
7988 7989 7990 7991 7992 7993 7994 7995 7996
            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;
7997

michaelni's avatar
michaelni committed
7998 7999
    }
    printf("Testing NAL layer\n");
8000

michaelni's avatar
michaelni committed
8001 8002 8003 8004
    uint8_t bitstream[COUNT];
    uint8_t nal[COUNT*2];
    H264Context h;
    memset(&h, 0, sizeof(H264Context));
8005

michaelni's avatar
michaelni committed
8006 8007 8008 8009 8010 8011 8012
    for(i=0; i<COUNT; i++){
        int zeros= i;
        int nal_length;
        int consumed;
        int out_length;
        uint8_t *out;
        int j;
8013

michaelni's avatar
michaelni committed
8014 8015 8016
        for(j=0; j<COUNT; j++){
            bitstream[j]= (random() % 255) + 1;
        }
8017

michaelni's avatar
michaelni committed
8018 8019 8020 8021 8022 8023 8024 8025
        for(j=0; j<zeros; j++){
            int pos= random() % COUNT;
            while(bitstream[pos] == 0){
                pos++;
                pos %= COUNT;
            }
            bitstream[pos]=0;
        }
8026

michaelni's avatar
michaelni committed
8027
        START_TIMER
8028

michaelni's avatar
michaelni committed
8029 8030 8031 8032 8033
        nal_length= encode_nal(&h, nal, bitstream, COUNT, COUNT*2);
        if(nal_length<0){
            printf("encoding failed\n");
            return -1;
        }
8034

8035
        out= ff_h264_decode_nal(&h, nal, &out_length, &consumed, nal_length);
michaelni's avatar
michaelni committed
8036 8037

        STOP_TIMER("NAL")
8038

michaelni's avatar
michaelni committed
8039 8040 8041 8042
        if(out_length != COUNT){
            printf("incorrect length %d %d\n", out_length, COUNT);
            return -1;
        }
8043

michaelni's avatar
michaelni committed
8044 8045 8046 8047
        if(consumed != nal_length){
            printf("incorrect consumed length %d %d\n", nal_length, consumed);
            return -1;
        }
8048

michaelni's avatar
michaelni committed
8049
        if(memcmp(bitstream, out, COUNT)){
diego's avatar
diego committed
8050
            printf("mismatch\n");
michaelni's avatar
michaelni committed
8051 8052 8053
            return -1;
        }
    }
8054
#endif
8055

michaelni's avatar
michaelni committed
8056
    printf("Testing RBSP\n");
8057 8058


michaelni's avatar
michaelni committed
8059 8060
    return 0;
}
8061
#endif /* TEST */
michaelni's avatar
michaelni committed
8062 8063


8064
static av_cold int decode_end(AVCodecContext *avctx)
michaelni's avatar
michaelni committed
8065 8066 8067
{
    H264Context *h = avctx->priv_data;
    MpegEncContext *s = &h->s;
8068
    int i;
8069

8070 8071
    av_freep(&h->rbsp_buffer[0]);
    av_freep(&h->rbsp_buffer[1]);
michaelni's avatar
michaelni committed
8072
    free_tables(h); //FIXME cleanup init stuff perhaps
8073 8074 8075 8076 8077 8078 8079

    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);

michaelni's avatar
michaelni committed
8080 8081 8082
    MPV_common_end(s);

//    memset(h, 0, sizeof(H264Context));
8083

michaelni's avatar
michaelni committed
8084 8085 8086 8087 8088 8089 8090 8091 8092 8093 8094 8095 8096
    return 0;
}


AVCodec h264_decoder = {
    "h264",
    CODEC_TYPE_VIDEO,
    CODEC_ID_H264,
    sizeof(H264Context),
    decode_init,
    NULL,
    decode_end,
    decode_frame,
8097
    /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 | CODEC_CAP_DELAY,
lorenm's avatar
lorenm committed
8098
    .flush= flush_dpb,
8099
    .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
michaelni's avatar
michaelni committed
8100 8101
};

8102
#if CONFIG_H264_VDPAU_DECODER
8103 8104 8105
AVCodec h264_vdpau_decoder = {
    "h264_vdpau",
    CODEC_TYPE_VIDEO,
cehoyos's avatar
cehoyos committed
8106
    CODEC_ID_H264,
8107 8108 8109 8110 8111 8112 8113 8114 8115 8116 8117
    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

8118
#if CONFIG_SVQ3_DECODER
michaelni's avatar
michaelni committed
8119
#include "svq3.c"
8120
#endif