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ffmpeg-mt
Commit c9038784 authored by michael's avatar michael
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Split H263 encoder and decoder from common code. 


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@21109 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b
parent 0dbd5a88
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libavcodec/Makefile
View file @ c9038784
......@@ -124,11 +124,11 @@ OBJS-$(CONFIG_H261_ENCODER) += h261enc.o h261.o \
mpegvideo_enc.o motion_est.o \
ratecontrol.o mpeg12data.o \
mpegvideo.o
OBJS-$(CONFIG_H263_DECODER) += h263dec.o h263.o mpeg4video.o mpeg4videodec.o flvdec.o intelh263dec.o \
OBJS-$(CONFIG_H263_DECODER) += h263dec.o h263.o ituh263dec.o mpeg4video.o mpeg4videodec.o flvdec.o intelh263dec.o \
mpegvideo.o error_resilience.o
OBJS-$(CONFIG_H263_VAAPI_HWACCEL) += vaapi_mpeg4.o
OBJS-$(CONFIG_H263_ENCODER) += mpegvideo_enc.o mpeg4video.o mpeg4videoenc.o motion_est.o \
ratecontrol.o h263.o flvenc.o mpeg12data.o \
ratecontrol.o h263.o ituh263enc.o flvenc.o mpeg12data.o \
mpegvideo.o error_resilience.o
OBJS-$(CONFIG_H264_DECODER) += h264.o h264idct.o h264pred.o cabac.o \
mpegvideo.o error_resilience.o
......
libavcodec/flvdec.c
View file @ c9038784
......@@ -18,6 +18,7 @@
*/
#include "mpegvideo.h"
#include "h263.h"
#include "flv.h"
void ff_flv2_decode_ac_esc(GetBitContext *gb, int *level, int *run, int *last){
......
libavcodec/flvenc.c
View file @ c9038784
......@@ -18,6 +18,7 @@
*/
#include "mpegvideo.h"
#include "h263.h"
#include "flv.h"
void ff_flv_encode_picture_header(MpegEncContext * s, int picture_number)
......
libavcodec/h263.c
View file @ c9038784
......@@ -5,10 +5,6 @@
* Copyright (c) 2001 Juan J. Sierralta P
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
* ac prediction encoding, B-frame support, error resilience, optimizations,
* qpel decoding, gmc decoding, interlaced decoding
* by Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
......@@ -47,299 +43,8 @@
//#undef NDEBUG
//#include <assert.h>
// The defines below define the number of bits that are read at once for
// reading vlc values. Changing these may improve speed and data cache needs
// be aware though that decreasing them may need the number of stages that is
// passed to get_vlc* to be increased.
#define MV_VLC_BITS 9
#define H263_MBTYPE_B_VLC_BITS 6
#define CBPC_B_VLC_BITS 3
#if CONFIG_ENCODERS
/**
* Table of number of bits a motion vector component needs.
*/
static uint8_t mv_penalty[MAX_FCODE+1][MAX_MV*2+1];
/**
* Minimal fcode that a motion vector component would need.
*/
static uint8_t fcode_tab[MAX_MV*2+1];
/**
* Minimal fcode that a motion vector component would need in umv.
* All entries in this table are 1.
*/
static uint8_t umv_fcode_tab[MAX_MV*2+1];
//unified encoding tables for run length encoding of coefficients
//unified in the sense that the specification specifies the encoding in several steps.
static uint8_t uni_h263_intra_aic_rl_len [64*64*2*2];
static uint8_t uni_h263_inter_rl_len [64*64*2*2];
//#define UNI_MPEG4_ENC_INDEX(last,run,level) ((last)*128 + (run)*256 + (level))
//#define UNI_MPEG4_ENC_INDEX(last,run,level) ((last)*128*64 + (run) + (level)*64)
#define UNI_MPEG4_ENC_INDEX(last,run,level) ((last)*128*64 + (run)*128 + (level))
#endif
static uint8_t static_rl_table_store[2][2][2*MAX_RUN + MAX_LEVEL + 3];
int h263_get_picture_format(int width, int height)
{
if (width == 128 && height == 96)
return 1;
else if (width == 176 && height == 144)
return 2;
else if (width == 352 && height == 288)
return 3;
else if (width == 704 && height == 576)
return 4;
else if (width == 1408 && height == 1152)
return 5;
else
return 7;
}
void ff_h263_show_pict_info(MpegEncContext *s){
if(s->avctx->debug&FF_DEBUG_PICT_INFO){
av_log(s->avctx, AV_LOG_DEBUG, "qp:%d %c size:%d rnd:%d%s%s%s%s%s%s%s%s%s %d/%d\n",
s->qscale, av_get_pict_type_char(s->pict_type),
s->gb.size_in_bits, 1-s->no_rounding,
s->obmc ? " AP" : "",
s->umvplus ? " UMV" : "",
s->h263_long_vectors ? " LONG" : "",
s->h263_plus ? " +" : "",
s->h263_aic ? " AIC" : "",
s->alt_inter_vlc ? " AIV" : "",
s->modified_quant ? " MQ" : "",
s->loop_filter ? " LOOP" : "",
s->h263_slice_structured ? " SS" : "",
s->avctx->time_base.den, s->avctx->time_base.num
);
}
}
#if CONFIG_ENCODERS
/**
* Returns the 4 bit value that specifies the given aspect ratio.
* This may be one of the standard aspect ratios or it specifies
* that the aspect will be stored explicitly later.
*/
av_const int ff_h263_aspect_to_info(AVRational aspect){
int i;
if(aspect.num==0) aspect= (AVRational){1,1};
for(i=1; i<6; i++){
if(av_cmp_q(ff_h263_pixel_aspect[i], aspect) == 0){
return i;
}
}
return FF_ASPECT_EXTENDED;
}
void h263_encode_picture_header(MpegEncContext * s, int picture_number)
{
int format, coded_frame_rate, coded_frame_rate_base, i, temp_ref;
int best_clock_code=1;
int best_divisor=60;
int best_error= INT_MAX;
if(s->h263_plus){
for(i=0; i<2; i++){
int div, error;
div= (s->avctx->time_base.num*1800000LL + 500LL*s->avctx->time_base.den) / ((1000LL+i)*s->avctx->time_base.den);
div= av_clip(div, 1, 127);
error= FFABS(s->avctx->time_base.num*1800000LL - (1000LL+i)*s->avctx->time_base.den*div);
if(error < best_error){
best_error= error;
best_divisor= div;
best_clock_code= i;
}
}
}
s->custom_pcf= best_clock_code!=1 || best_divisor!=60;
coded_frame_rate= 1800000;
coded_frame_rate_base= (1000+best_clock_code)*best_divisor;
align_put_bits(&s->pb);
/* Update the pointer to last GOB */
s->ptr_lastgob = put_bits_ptr(&s->pb);
put_bits(&s->pb, 22, 0x20); /* PSC */
temp_ref= s->picture_number * (int64_t)coded_frame_rate * s->avctx->time_base.num / //FIXME use timestamp
(coded_frame_rate_base * (int64_t)s->avctx->time_base.den);
put_sbits(&s->pb, 8, temp_ref); /* TemporalReference */
put_bits(&s->pb, 1, 1); /* marker */
put_bits(&s->pb, 1, 0); /* h263 id */
put_bits(&s->pb, 1, 0); /* split screen off */
put_bits(&s->pb, 1, 0); /* camera off */
put_bits(&s->pb, 1, 0); /* freeze picture release off */
format = h263_get_picture_format(s->width, s->height);
if (!s->h263_plus) {
/* H.263v1 */
put_bits(&s->pb, 3, format);
put_bits(&s->pb, 1, (s->pict_type == FF_P_TYPE));
/* By now UMV IS DISABLED ON H.263v1, since the restrictions
of H.263v1 UMV implies to check the predicted MV after
calculation of the current MB to see if we're on the limits */
put_bits(&s->pb, 1, 0); /* Unrestricted Motion Vector: off */
put_bits(&s->pb, 1, 0); /* SAC: off */
put_bits(&s->pb, 1, s->obmc); /* Advanced Prediction */
put_bits(&s->pb, 1, 0); /* only I/P frames, no PB frame */
put_bits(&s->pb, 5, s->qscale);
put_bits(&s->pb, 1, 0); /* Continuous Presence Multipoint mode: off */
} else {
int ufep=1;
/* H.263v2 */
/* H.263 Plus PTYPE */
put_bits(&s->pb, 3, 7);
put_bits(&s->pb,3,ufep); /* Update Full Extended PTYPE */
if (format == 7)
put_bits(&s->pb,3,6); /* Custom Source Format */
else
put_bits(&s->pb, 3, format);
put_bits(&s->pb,1, s->custom_pcf);
put_bits(&s->pb,1, s->umvplus); /* Unrestricted Motion Vector */
put_bits(&s->pb,1,0); /* SAC: off */
put_bits(&s->pb,1,s->obmc); /* Advanced Prediction Mode */
put_bits(&s->pb,1,s->h263_aic); /* Advanced Intra Coding */
put_bits(&s->pb,1,s->loop_filter); /* Deblocking Filter */
put_bits(&s->pb,1,s->h263_slice_structured); /* Slice Structured */
put_bits(&s->pb,1,0); /* Reference Picture Selection: off */
put_bits(&s->pb,1,0); /* Independent Segment Decoding: off */
put_bits(&s->pb,1,s->alt_inter_vlc); /* Alternative Inter VLC */
put_bits(&s->pb,1,s->modified_quant); /* Modified Quantization: */
put_bits(&s->pb,1,1); /* "1" to prevent start code emulation */
put_bits(&s->pb,3,0); /* Reserved */
put_bits(&s->pb, 3, s->pict_type == FF_P_TYPE);
put_bits(&s->pb,1,0); /* Reference Picture Resampling: off */
put_bits(&s->pb,1,0); /* Reduced-Resolution Update: off */
put_bits(&s->pb,1,s->no_rounding); /* Rounding Type */
put_bits(&s->pb,2,0); /* Reserved */
put_bits(&s->pb,1,1); /* "1" to prevent start code emulation */
/* This should be here if PLUSPTYPE */
put_bits(&s->pb, 1, 0); /* Continuous Presence Multipoint mode: off */
if (format == 7) {
/* Custom Picture Format (CPFMT) */
s->aspect_ratio_info= ff_h263_aspect_to_info(s->avctx->sample_aspect_ratio);
put_bits(&s->pb,4,s->aspect_ratio_info);
put_bits(&s->pb,9,(s->width >> 2) - 1);
put_bits(&s->pb,1,1); /* "1" to prevent start code emulation */
put_bits(&s->pb,9,(s->height >> 2));
if (s->aspect_ratio_info == FF_ASPECT_EXTENDED){
put_bits(&s->pb, 8, s->avctx->sample_aspect_ratio.num);
put_bits(&s->pb, 8, s->avctx->sample_aspect_ratio.den);
}
}
if(s->custom_pcf){
if(ufep){
put_bits(&s->pb, 1, best_clock_code);
put_bits(&s->pb, 7, best_divisor);
}
put_sbits(&s->pb, 2, temp_ref>>8);
}
/* Unlimited Unrestricted Motion Vectors Indicator (UUI) */
if (s->umvplus)
// put_bits(&s->pb,1,1); /* Limited according tables of Annex D */
//FIXME check actual requested range
put_bits(&s->pb,2,1); /* unlimited */
if(s->h263_slice_structured)
put_bits(&s->pb,2,0); /* no weird submodes */
put_bits(&s->pb, 5, s->qscale);
}
put_bits(&s->pb, 1, 0); /* no PEI */
if(s->h263_slice_structured){
put_bits(&s->pb, 1, 1);
assert(s->mb_x == 0 && s->mb_y == 0);
ff_h263_encode_mba(s);
put_bits(&s->pb, 1, 1);
}
if(s->h263_aic){
s->y_dc_scale_table=
s->c_dc_scale_table= ff_aic_dc_scale_table;
}else{
s->y_dc_scale_table=
s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
}
}
/**
* Encodes a group of blocks header.
*/
void h263_encode_gob_header(MpegEncContext * s, int mb_line)
{
put_bits(&s->pb, 17, 1); /* GBSC */
if(s->h263_slice_structured){
put_bits(&s->pb, 1, 1);
ff_h263_encode_mba(s);
if(s->mb_num > 1583)
put_bits(&s->pb, 1, 1);
put_bits(&s->pb, 5, s->qscale); /* GQUANT */
put_bits(&s->pb, 1, 1);
put_bits(&s->pb, 2, s->pict_type == FF_I_TYPE); /* GFID */
}else{
int gob_number= mb_line / s->gob_index;
put_bits(&s->pb, 5, gob_number); /* GN */
put_bits(&s->pb, 2, s->pict_type == FF_I_TYPE); /* GFID */
put_bits(&s->pb, 5, s->qscale); /* GQUANT */
}
}
/**
* modify qscale so that encoding is acually possible in h263 (limit difference to -2..2)
*/
void ff_clean_h263_qscales(MpegEncContext *s){
int i;
int8_t * const qscale_table= s->current_picture.qscale_table;
ff_init_qscale_tab(s);
for(i=1; i<s->mb_num; i++){
if(qscale_table[ s->mb_index2xy[i] ] - qscale_table[ s->mb_index2xy[i-1] ] >2)
qscale_table[ s->mb_index2xy[i] ]= qscale_table[ s->mb_index2xy[i-1] ]+2;
}
for(i=s->mb_num-2; i>=0; i--){
if(qscale_table[ s->mb_index2xy[i] ] - qscale_table[ s->mb_index2xy[i+1] ] >2)
qscale_table[ s->mb_index2xy[i] ]= qscale_table[ s->mb_index2xy[i+1] ]+2;
}
if(s->codec_id != CODEC_ID_H263P){
for(i=1; i<s->mb_num; i++){
int mb_xy= s->mb_index2xy[i];
if(qscale_table[mb_xy] != qscale_table[s->mb_index2xy[i-1]] && (s->mb_type[mb_xy]&CANDIDATE_MB_TYPE_INTER4V)){
s->mb_type[mb_xy]|= CANDIDATE_MB_TYPE_INTER;
}
}
}
}
uint8_t ff_h263_static_rl_table_store[2][2][2*MAX_RUN + MAX_LEVEL + 3];
#endif //CONFIG_ENCODERS
void ff_h263_update_motion_val(MpegEncContext * s){
const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
......@@ -393,164 +98,7 @@ void ff_h263_update_motion_val(MpegEncContext * s){
}
}
#if CONFIG_ENCODERS
static const int dquant_code[5]= {1,0,9,2,3};
/**
* encodes a 8x8 block.
* @param block the 8x8 block
* @param n block index (0-3 are luma, 4-5 are chroma)
*/
static void h263_encode_block(MpegEncContext * s, DCTELEM * block, int n)
{
int level, run, last, i, j, last_index, last_non_zero, sign, slevel, code;
RLTable *rl;
rl = &ff_h263_rl_inter;
if (s->mb_intra && !s->h263_aic) {
/* DC coef */
level = block[0];
/* 255 cannot be represented, so we clamp */
if (level > 254) {
level = 254;
block[0] = 254;
}
/* 0 cannot be represented also */
else if (level < 1) {
level = 1;
block[0] = 1;
}
if (level == 128) //FIXME check rv10
put_bits(&s->pb, 8, 0xff);
else
put_bits(&s->pb, 8, level);
i = 1;
} else {
i = 0;
if (s->h263_aic && s->mb_intra)
rl = &rl_intra_aic;
if(s->alt_inter_vlc && !s->mb_intra){
int aic_vlc_bits=0;
int inter_vlc_bits=0;
int wrong_pos=-1;
int aic_code;
last_index = s->block_last_index[n];
last_non_zero = i - 1;
for (; i <= last_index; i++) {
j = s->intra_scantable.permutated[i];
level = block[j];
if (level) {
run = i - last_non_zero - 1;
last = (i == last_index);
if(level<0) level= -level;
code = get_rl_index(rl, last, run, level);
aic_code = get_rl_index(&rl_intra_aic, last, run, level);
inter_vlc_bits += rl->table_vlc[code][1]+1;
aic_vlc_bits += rl_intra_aic.table_vlc[aic_code][1]+1;
if (code == rl->n) {
inter_vlc_bits += 1+6+8-1;
}
if (aic_code == rl_intra_aic.n) {
aic_vlc_bits += 1+6+8-1;
wrong_pos += run + 1;
}else
wrong_pos += wrong_run[aic_code];
last_non_zero = i;
}
}
i = 0;
if(aic_vlc_bits < inter_vlc_bits && wrong_pos > 63)
rl = &rl_intra_aic;
}
}
/* AC coefs */
last_index = s->block_last_index[n];
last_non_zero = i - 1;
for (; i <= last_index; i++) {
j = s->intra_scantable.permutated[i];
level = block[j];
if (level) {
run = i - last_non_zero - 1;
last = (i == last_index);
sign = 0;
slevel = level;
if (level < 0) {
sign = 1;
level = -level;
}
code = get_rl_index(rl, last, run, level);
put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
if (code == rl->n) {
if(!CONFIG_FLV_ENCODER || s->h263_flv <= 1){
put_bits(&s->pb, 1, last);
put_bits(&s->pb, 6, run);
assert(slevel != 0);
if(level < 128)
put_sbits(&s->pb, 8, slevel);
else{
put_bits(&s->pb, 8, 128);
put_sbits(&s->pb, 5, slevel);
put_sbits(&s->pb, 6, slevel>>5);
}
}else{
ff_flv2_encode_ac_esc(&s->pb, slevel, level, run, last);
}
} else {
put_bits(&s->pb, 1, sign);
}
last_non_zero = i;
}
}
}
/* Encode MV differences on H.263+ with Unrestricted MV mode */
static void h263p_encode_umotion(MpegEncContext * s, int val)
{
short sval = 0;
short i = 0;
short n_bits = 0;
short temp_val;
int code = 0;
int tcode;
if ( val == 0)
put_bits(&s->pb, 1, 1);
else if (val == 1)
put_bits(&s->pb, 3, 0);
else if (val == -1)
put_bits(&s->pb, 3, 2);
else {
sval = ((val < 0) ? (short)(-val):(short)val);
temp_val = sval;
while (temp_val != 0) {
temp_val = temp_val >> 1;
n_bits++;
}
i = n_bits - 1;
while (i > 0) {
tcode = (sval & (1 << (i-1))) >> (i-1);
tcode = (tcode << 1) | 1;
code = (code << 2) | tcode;
i--;
}
code = ((code << 1) | (val < 0)) << 1;
put_bits(&s->pb, (2*n_bits)+1, code);
}
}
static int h263_pred_dc(MpegEncContext * s, int n, int16_t **dc_val_ptr)
int h263_pred_dc(MpegEncContext * s, int n, int16_t **dc_val_ptr)
{
int x, y, wrap, a, c, pred_dc;
int16_t *dc_val;
......@@ -591,208 +139,6 @@ static int h263_pred_dc(MpegEncContext * s, int n, int16_t **dc_val_ptr)
return pred_dc;
}
void h263_encode_mb(MpegEncContext * s,
DCTELEM block[6][64],
int motion_x, int motion_y)
{
int cbpc, cbpy, i, cbp, pred_x, pred_y;
int16_t pred_dc;
int16_t rec_intradc[6];
int16_t *dc_ptr[6];
const int interleaved_stats= (s->flags&CODEC_FLAG_PASS1);
if (!s->mb_intra) {
/* compute cbp */
cbp= get_p_cbp(s, block, motion_x, motion_y);
if ((cbp | motion_x | motion_y | s->dquant | (s->mv_type - MV_TYPE_16X16)) == 0) {
/* skip macroblock */
put_bits(&s->pb, 1, 1);
if(interleaved_stats){
s->misc_bits++;
s->last_bits++;
}
s->skip_count++;
return;
}
put_bits(&s->pb, 1, 0); /* mb coded */
cbpc = cbp & 3;
cbpy = cbp >> 2;
if(s->alt_inter_vlc==0 || cbpc!=3)
cbpy ^= 0xF;
if(s->dquant) cbpc+= 8;
if(s->mv_type==MV_TYPE_16X16){
put_bits(&s->pb,
ff_h263_inter_MCBPC_bits[cbpc],
ff_h263_inter_MCBPC_code[cbpc]);
put_bits(&s->pb, ff_h263_cbpy_tab[cbpy][1], ff_h263_cbpy_tab[cbpy][0]);
if(s->dquant)
put_bits(&s->pb, 2, dquant_code[s->dquant+2]);
if(interleaved_stats){
s->misc_bits+= get_bits_diff(s);
}
/* motion vectors: 16x16 mode */
h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
if (!s->umvplus) {
ff_h263_encode_motion_vector(s, motion_x - pred_x,
motion_y - pred_y, 1);
}
else {
h263p_encode_umotion(s, motion_x - pred_x);
h263p_encode_umotion(s, motion_y - pred_y);
if (((motion_x - pred_x) == 1) && ((motion_y - pred_y) == 1))
/* To prevent Start Code emulation */
put_bits(&s->pb,1,1);
}
}else{
put_bits(&s->pb,
ff_h263_inter_MCBPC_bits[cbpc+16],
ff_h263_inter_MCBPC_code[cbpc+16]);
put_bits(&s->pb, ff_h263_cbpy_tab[cbpy][1], ff_h263_cbpy_tab[cbpy][0]);
if(s->dquant)
put_bits(&s->pb, 2, dquant_code[s->dquant+2]);
if(interleaved_stats){
s->misc_bits+= get_bits_diff(s);
}
for(i=0; i<4; i++){
/* motion vectors: 8x8 mode*/
h263_pred_motion(s, i, 0, &pred_x, &pred_y);
motion_x= s->current_picture.motion_val[0][ s->block_index[i] ][0];
motion_y= s->current_picture.motion_val[0][ s->block_index[i] ][1];
if (!s->umvplus) {
ff_h263_encode_motion_vector(s, motion_x - pred_x,
motion_y - pred_y, 1);
}
else {
h263p_encode_umotion(s, motion_x - pred_x);
h263p_encode_umotion(s, motion_y - pred_y);
if (((motion_x - pred_x) == 1) && ((motion_y - pred_y) == 1))
/* To prevent Start Code emulation */
put_bits(&s->pb,1,1);
}
}
}
if(interleaved_stats){
s->mv_bits+= get_bits_diff(s);
}
} else {
assert(s->mb_intra);
cbp = 0;
if (s->h263_aic) {
/* Predict DC */
for(i=0; i<6; i++) {
int16_t level = block[i][0];
int scale;
if(i<4) scale= s->y_dc_scale;
else scale= s->c_dc_scale;
pred_dc = h263_pred_dc(s, i, &dc_ptr[i]);
level -= pred_dc;
/* Quant */
if (level >= 0)
level = (level + (scale>>1))/scale;
else
level = (level - (scale>>1))/scale;
/* AIC can change CBP */
if (level == 0 && s->block_last_index[i] == 0)
s->block_last_index[i] = -1;
if(!s->modified_quant){
if (level < -127)
level = -127;
else if (level > 127)
level = 127;
}
block[i][0] = level;
/* Reconstruction */
rec_intradc[i] = scale*level + pred_dc;
/* Oddify */
rec_intradc[i] |= 1;
//if ((rec_intradc[i] % 2) == 0)
// rec_intradc[i]++;
/* Clipping */
if (rec_intradc[i] < 0)
rec_intradc[i] = 0;
else if (rec_intradc[i] > 2047)
rec_intradc[i] = 2047;
/* Update AC/DC tables */
*dc_ptr[i] = rec_intradc[i];
if (s->block_last_index[i] >= 0)
cbp |= 1 << (5 - i);
}
}else{
for(i=0; i<6; i++) {
/* compute cbp */
if (s->block_last_index[i] >= 1)
cbp |= 1 << (5 - i);
}
}
cbpc = cbp & 3;
if (s->pict_type == FF_I_TYPE) {
if(s->dquant) cbpc+=4;
put_bits(&s->pb,
ff_h263_intra_MCBPC_bits[cbpc],
ff_h263_intra_MCBPC_code[cbpc]);
} else {
if(s->dquant) cbpc+=8;
put_bits(&s->pb, 1, 0); /* mb coded */
put_bits(&s->pb,
ff_h263_inter_MCBPC_bits[cbpc + 4],
ff_h263_inter_MCBPC_code[cbpc + 4]);
}
if (s->h263_aic) {
/* XXX: currently, we do not try to use ac prediction */
put_bits(&s->pb, 1, 0); /* no AC prediction */
}
cbpy = cbp >> 2;
put_bits(&s->pb, ff_h263_cbpy_tab[cbpy][1], ff_h263_cbpy_tab[cbpy][0]);
if(s->dquant)
put_bits(&s->pb, 2, dquant_code[s->dquant+2]);
if(interleaved_stats){
s->misc_bits+= get_bits_diff(s);
}
}
for(i=0; i<6; i++) {
/* encode each block */
h263_encode_block(s, block[i], i);
/* Update INTRADC for decoding */
if (s->h263_aic && s->mb_intra) {
block[i][0] = rec_intradc[i];
}
}
if(interleaved_stats){
if (!s->mb_intra) {
s->p_tex_bits+= get_bits_diff(s);
s->f_count++;
}else{
s->i_tex_bits+= get_bits_diff(s);
s->i_count++;
}
}
}
#endif
void ff_h263_loop_filter(MpegEncContext * s){
int qp_c;
const int linesize = s->linesize;
......@@ -880,7 +226,7 @@ void ff_h263_loop_filter(MpegEncContext * s){
}
}
static void h263_pred_acdc(MpegEncContext * s, DCTELEM *block, int n)
void h263_pred_acdc(MpegEncContext * s, DCTELEM *block, int n)
{
int x, y, wrap, a, c, pred_dc, scale, i;
int16_t *dc_val, *ac_val, *ac_val1;
......@@ -1025,229 +371,6 @@ int16_t *h263_pred_motion(MpegEncContext * s, int block, int dir,
return *mot_val;
}
#if CONFIG_ENCODERS
/***************************************************/
void ff_h263_encode_motion(MpegEncContext * s, int val, int f_code)
{
int range, l, bit_size, sign, code, bits;
if (val == 0) {
/* zero vector */
code = 0;
put_bits(&s->pb, mvtab[code][1], mvtab[code][0]);
} else {
bit_size = f_code - 1;
range = 1 << bit_size;
/* modulo encoding */
l= INT_BIT - 6 - bit_size;
val = (val<<l)>>l;
sign = val>>31;
val= (val^sign)-sign;
sign&=1;
val--;
code = (val >> bit_size) + 1;
bits = val & (range - 1);
put_bits(&s->pb, mvtab[code][1] + 1, (mvtab[code][0] << 1) | sign);
if (bit_size > 0) {
put_bits(&s->pb, bit_size, bits);
}
}
}
static void init_mv_penalty_and_fcode(MpegEncContext *s)
{
int f_code;
int mv;
for(f_code=1; f_code<=MAX_FCODE; f_code++){
for(mv=-MAX_MV; mv<=MAX_MV; mv++){
int len;
if(mv==0) len= mvtab[0][1];
else{
int val, bit_size, code;
bit_size = f_code - 1;
val=mv;
if (val < 0)
val = -val;
val--;
code = (val >> bit_size) + 1;
if(code<33){
len= mvtab[code][1] + 1 + bit_size;
}else{
len= mvtab[32][1] + av_log2(code>>5) + 2 + bit_size;
}
}
mv_penalty[f_code][mv+MAX_MV]= len;
}
}
for(f_code=MAX_FCODE; f_code>0; f_code--){
for(mv=-(16<<f_code); mv<(16<<f_code); mv++){
fcode_tab[mv+MAX_MV]= f_code;
}
}
for(mv=0; mv<MAX_MV*2+1; mv++){
umv_fcode_tab[mv]= 1;
}
}
static void init_uni_h263_rl_tab(RLTable *rl, uint32_t *bits_tab, uint8_t *len_tab){
int slevel, run, last;
assert(MAX_LEVEL >= 64);
assert(MAX_RUN >= 63);
for(slevel=-64; slevel<64; slevel++){
if(slevel==0) continue;
for(run=0; run<64; run++){
for(last=0; last<=1; last++){
const int index= UNI_MPEG4_ENC_INDEX(last, run, slevel+64);
int level= slevel < 0 ? -slevel : slevel;
int sign= slevel < 0 ? 1 : 0;
int bits, len, code;
len_tab[index]= 100;
/* ESC0 */
code= get_rl_index(rl, last, run, level);
bits= rl->table_vlc[code][0];
len= rl->table_vlc[code][1];
bits=bits*2+sign; len++;
if(code!=rl->n && len < len_tab[index]){
if(bits_tab) bits_tab[index]= bits;
len_tab [index]= len;
}
/* ESC */
bits= rl->table_vlc[rl->n][0];
len = rl->table_vlc[rl->n][1];
bits=bits*2+last; len++;
bits=bits*64+run; len+=6;
bits=bits*256+(level&0xff); len+=8;
if(len < len_tab[index]){
if(bits_tab) bits_tab[index]= bits;
len_tab [index]= len;
}
}
}
}
}
void h263_encode_init(MpegEncContext *s)
{
static int done = 0;
if (!done) {
done = 1;
init_rl(&ff_h263_rl_inter, static_rl_table_store[0]);
init_rl(&rl_intra_aic, static_rl_table_store[1]);
init_uni_h263_rl_tab(&rl_intra_aic, NULL, uni_h263_intra_aic_rl_len);
init_uni_h263_rl_tab(&ff_h263_rl_inter , NULL, uni_h263_inter_rl_len);
init_mv_penalty_and_fcode(s);
}
s->me.mv_penalty= mv_penalty; //FIXME exact table for msmpeg4 & h263p
s->intra_ac_vlc_length =s->inter_ac_vlc_length = uni_h263_inter_rl_len;
s->intra_ac_vlc_last_length=s->inter_ac_vlc_last_length= uni_h263_inter_rl_len + 128*64;
if(s->h263_aic){
s->intra_ac_vlc_length = uni_h263_intra_aic_rl_len;
s->intra_ac_vlc_last_length= uni_h263_intra_aic_rl_len + 128*64;
}
s->ac_esc_length= 7+1+6+8;
// use fcodes >1 only for mpeg4 & h263 & h263p FIXME
switch(s->codec_id){
case CODEC_ID_MPEG4:
s->fcode_tab= fcode_tab;
break;
case CODEC_ID_H263P:
if(s->umvplus)
s->fcode_tab= umv_fcode_tab;
if(s->modified_quant){
s->min_qcoeff= -2047;
s->max_qcoeff= 2047;
}else{
s->min_qcoeff= -127;
s->max_qcoeff= 127;
}
break;
//Note for mpeg4 & h263 the dc-scale table will be set per frame as needed later
case CODEC_ID_FLV1:
if (s->h263_flv > 1) {
s->min_qcoeff= -1023;
s->max_qcoeff= 1023;
} else {
s->min_qcoeff= -127;
s->max_qcoeff= 127;
}
s->y_dc_scale_table=
s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
break;
default: //nothing needed - default table already set in mpegvideo.c
s->min_qcoeff= -127;
s->max_qcoeff= 127;
s->y_dc_scale_table=
s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
}
}
#endif //CONFIG_ENCODERS
/***********************************************/
/* decoding */
VLC ff_h263_intra_MCBPC_vlc;
VLC ff_h263_inter_MCBPC_vlc;
VLC ff_h263_cbpy_vlc;
static VLC mv_vlc;
static VLC h263_mbtype_b_vlc;
static VLC cbpc_b_vlc;
/* init vlcs */
/* XXX: find a better solution to handle static init */
void h263_decode_init_vlc(MpegEncContext *s)
{
static int done = 0;
if (!done) {
done = 1;
INIT_VLC_STATIC(&ff_h263_intra_MCBPC_vlc, INTRA_MCBPC_VLC_BITS, 9,
ff_h263_intra_MCBPC_bits, 1, 1,
ff_h263_intra_MCBPC_code, 1, 1, 72);
INIT_VLC_STATIC(&ff_h263_inter_MCBPC_vlc, INTER_MCBPC_VLC_BITS, 28,
ff_h263_inter_MCBPC_bits, 1, 1,
ff_h263_inter_MCBPC_code, 1, 1, 198);
INIT_VLC_STATIC(&ff_h263_cbpy_vlc, CBPY_VLC_BITS, 16,
&ff_h263_cbpy_tab[0][1], 2, 1,
&ff_h263_cbpy_tab[0][0], 2, 1, 64);
INIT_VLC_STATIC(&mv_vlc, MV_VLC_BITS, 33,
&mvtab[0][1], 2, 1,
&mvtab[0][0], 2, 1, 538);
init_rl(&ff_h263_rl_inter, static_rl_table_store[0]);
init_rl(&rl_intra_aic, static_rl_table_store[1]);
INIT_VLC_RL(ff_h263_rl_inter, 554);
INIT_VLC_RL(rl_intra_aic, 554);
INIT_VLC_STATIC(&h263_mbtype_b_vlc, H263_MBTYPE_B_VLC_BITS, 15,
&h263_mbtype_b_tab[0][1], 2, 1,
&h263_mbtype_b_tab[0][0], 2, 1, 80);
INIT_VLC_STATIC(&cbpc_b_vlc, CBPC_B_VLC_BITS, 4,
&cbpc_b_tab[0][1], 2, 1,
&cbpc_b_tab[0][0], 2, 1, 8);
}
}
/**
* Get the GOB height based on picture height.
......@@ -1260,1021 +383,3 @@ int ff_h263_get_gob_height(MpegEncContext *s){
else
return 4;
}
int ff_h263_decode_mba(MpegEncContext *s)
{
int i, mb_pos;
for(i=0; i<6; i++){
if(s->mb_num-1 <= ff_mba_max[i]) break;
}
mb_pos= get_bits(&s->gb, ff_mba_length[i]);
s->mb_x= mb_pos % s->mb_width;
s->mb_y= mb_pos / s->mb_width;
return mb_pos;
}
void ff_h263_encode_mba(MpegEncContext *s)
{
int i, mb_pos;
for(i=0; i<6; i++){
if(s->mb_num-1 <= ff_mba_max[i]) break;
}
mb_pos= s->mb_x + s->mb_width*s->mb_y;
put_bits(&s->pb, ff_mba_length[i], mb_pos);
}
/**
* decodes the group of blocks header or slice header.
* @return <0 if an error occurred
*/
static int h263_decode_gob_header(MpegEncContext *s)
{
unsigned int val, gfid, gob_number;
int left;
/* Check for GOB Start Code */
val = show_bits(&s->gb, 16);
if(val)
return -1;
/* We have a GBSC probably with GSTUFF */
skip_bits(&s->gb, 16); /* Drop the zeros */
left= get_bits_left(&s->gb);
//MN: we must check the bits left or we might end in a infinite loop (or segfault)
for(;left>13; left--){
if(get_bits1(&s->gb)) break; /* Seek the '1' bit */
}
if(left<=13)
return -1;
if(s->h263_slice_structured){
if(get_bits1(&s->gb)==0)
return -1;
ff_h263_decode_mba(s);
if(s->mb_num > 1583)
if(get_bits1(&s->gb)==0)
return -1;
s->qscale = get_bits(&s->gb, 5); /* SQUANT */
if(get_bits1(&s->gb)==0)
return -1;
gfid = get_bits(&s->gb, 2); /* GFID */
}else{
gob_number = get_bits(&s->gb, 5); /* GN */
s->mb_x= 0;
s->mb_y= s->gob_index* gob_number;
gfid = get_bits(&s->gb, 2); /* GFID */
s->qscale = get_bits(&s->gb, 5); /* GQUANT */
}
if(s->mb_y >= s->mb_height)
return -1;
if(s->qscale==0)
return -1;
return 0;
}
static inline void memsetw(short *tab, int val, int n)
{
int i;
for(i=0;i<n;i++)
tab[i] = val;
}
/**
* finds the next resync_marker
* @param p pointer to buffer to scan
* @param end pointer to the end of the buffer
* @return pointer to the next resync_marker, or end if none was found
*/
const uint8_t *ff_h263_find_resync_marker(const uint8_t *restrict p, const uint8_t * restrict end)
{
assert(p < end);
end-=2;
p++;
for(;p<end; p+=2){
if(!*p){
if (!p[-1] && p[1]) return p - 1;
else if(!p[ 1] && p[2]) return p;
}
}
return end+2;
}
/**
* decodes the group of blocks / video packet header.
* @return bit position of the resync_marker, or <0 if none was found
*/
int ff_h263_resync(MpegEncContext *s){
int left, pos, ret;
if(s->codec_id==CODEC_ID_MPEG4){
skip_bits1(&s->gb);
align_get_bits(&s->gb);
}
if(show_bits(&s->gb, 16)==0){
pos= get_bits_count(&s->gb);
if(CONFIG_MPEG4_DECODER && s->codec_id==CODEC_ID_MPEG4)
ret= mpeg4_decode_video_packet_header(s);
else
ret= h263_decode_gob_header(s);
if(ret>=0)
return pos;
}
//OK, it's not where it is supposed to be ...
s->gb= s->last_resync_gb;
align_get_bits(&s->gb);
left= get_bits_left(&s->gb);
for(;left>16+1+5+5; left-=8){
if(show_bits(&s->gb, 16)==0){
GetBitContext bak= s->gb;
pos= get_bits_count(&s->gb);
if(CONFIG_MPEG4_DECODER && s->codec_id==CODEC_ID_MPEG4)
ret= mpeg4_decode_video_packet_header(s);
else
ret= h263_decode_gob_header(s);
if(ret>=0)
return pos;
s->gb= bak;
}
skip_bits(&s->gb, 8);
}
return -1;
}
int h263_decode_motion(MpegEncContext * s, int pred, int f_code)
{
int code, val, sign, shift, l;
code = get_vlc2(&s->gb, mv_vlc.table, MV_VLC_BITS, 2);
if (code == 0)
return pred;
if (code < 0)
return 0xffff;
sign = get_bits1(&s->gb);
shift = f_code - 1;
val = code;
if (shift) {
val = (val - 1) << shift;
val |= get_bits(&s->gb, shift);
val++;
}
if (sign)
val = -val;
val += pred;
/* modulo decoding */
if (!s->h263_long_vectors) {
l = INT_BIT - 5 - f_code;
val = (val<<l)>>l;
} else {
/* horrible h263 long vector mode */
if (pred < -31 && val < -63)
val += 64;
if (pred > 32 && val > 63)
val -= 64;
}
return val;
}
/* Decodes RVLC of H.263+ UMV */
static int h263p_decode_umotion(MpegEncContext * s, int pred)
{
int code = 0, sign;
if (get_bits1(&s->gb)) /* Motion difference = 0 */
return pred;
code = 2 + get_bits1(&s->gb);
while (get_bits1(&s->gb))
{
code <<= 1;
code += get_bits1(&s->gb);
}
sign = code & 1;
code >>= 1;
code = (sign) ? (pred - code) : (pred + code);
dprintf(s->avctx,"H.263+ UMV Motion = %d\n", code);
return code;
}
/**
* read the next MVs for OBMC. yes this is a ugly hack, feel free to send a patch :)
*/
static void preview_obmc(MpegEncContext *s){
GetBitContext gb= s->gb;
int cbpc, i, pred_x, pred_y, mx, my;
int16_t *mot_val;
const int xy= s->mb_x + 1 + s->mb_y * s->mb_stride;
const int stride= s->b8_stride*2;
for(i=0; i<4; i++)
s->block_index[i]+= 2;
for(i=4; i<6; i++)
s->block_index[i]+= 1;
s->mb_x++;
assert(s->pict_type == FF_P_TYPE);
do{
if (get_bits1(&s->gb)) {
/* skip mb */
mot_val = s->current_picture.motion_val[0][ s->block_index[0] ];
mot_val[0 ]= mot_val[2 ]=
mot_val[0+stride]= mot_val[2+stride]= 0;
mot_val[1 ]= mot_val[3 ]=
mot_val[1+stride]= mot_val[3+stride]= 0;
s->current_picture.mb_type[xy]= MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_L0;
goto end;
}
cbpc = get_vlc2(&s->gb, ff_h263_inter_MCBPC_vlc.table, INTER_MCBPC_VLC_BITS, 2);
}while(cbpc == 20);
if(cbpc & 4){
s->current_picture.mb_type[xy]= MB_TYPE_INTRA;
}else{
get_vlc2(&s->gb, ff_h263_cbpy_vlc.table, CBPY_VLC_BITS, 1);
if (cbpc & 8) {
if(s->modified_quant){
if(get_bits1(&s->gb)) skip_bits(&s->gb, 1);
else skip_bits(&s->gb, 5);
}else
skip_bits(&s->gb, 2);
}
if ((cbpc & 16) == 0) {
s->current_picture.mb_type[xy]= MB_TYPE_16x16 | MB_TYPE_L0;
/* 16x16 motion prediction */
mot_val= h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
if (s->umvplus)
mx = h263p_decode_umotion(s, pred_x);
else
mx = h263_decode_motion(s, pred_x, 1);
if (s->umvplus)
my = h263p_decode_umotion(s, pred_y);
else
my = h263_decode_motion(s, pred_y, 1);
mot_val[0 ]= mot_val[2 ]=
mot_val[0+stride]= mot_val[2+stride]= mx;
mot_val[1 ]= mot_val[3 ]=
mot_val[1+stride]= mot_val[3+stride]= my;
} else {
s->current_picture.mb_type[xy]= MB_TYPE_8x8 | MB_TYPE_L0;
for(i=0;i<4;i++) {
mot_val = h263_pred_motion(s, i, 0, &pred_x, &pred_y);
if (s->umvplus)
mx = h263p_decode_umotion(s, pred_x);
else
mx = h263_decode_motion(s, pred_x, 1);
if (s->umvplus)
my = h263p_decode_umotion(s, pred_y);
else
my = h263_decode_motion(s, pred_y, 1);
if (s->umvplus && (mx - pred_x) == 1 && (my - pred_y) == 1)
skip_bits1(&s->gb); /* Bit stuffing to prevent PSC */
mot_val[0] = mx;
mot_val[1] = my;
}
}
}
end:
for(i=0; i<4; i++)
s->block_index[i]-= 2;
for(i=4; i<6; i++)
s->block_index[i]-= 1;
s->mb_x--;
s->gb= gb;
}
static void h263_decode_dquant(MpegEncContext *s){
static const int8_t quant_tab[4] = { -1, -2, 1, 2 };
if(s->modified_quant){
if(get_bits1(&s->gb))
s->qscale= modified_quant_tab[get_bits1(&s->gb)][ s->qscale ];
else
s->qscale= get_bits(&s->gb, 5);
}else
s->qscale += quant_tab[get_bits(&s->gb, 2)];
ff_set_qscale(s, s->qscale);
}
static int h263_decode_block(MpegEncContext * s, DCTELEM * block,
int n, int coded)
{
int code, level, i, j, last, run;
RLTable *rl = &ff_h263_rl_inter;
const uint8_t *scan_table;
GetBitContext gb= s->gb;
scan_table = s->intra_scantable.permutated;
if (s->h263_aic && s->mb_intra) {
rl = &rl_intra_aic;
i = 0;
if (s->ac_pred) {
if (s->h263_aic_dir)
scan_table = s->intra_v_scantable.permutated; /* left */
else
scan_table = s->intra_h_scantable.permutated; /* top */
}
} else if (s->mb_intra) {
/* DC coef */
if(s->codec_id == CODEC_ID_RV10){
#if CONFIG_RV10_DECODER
if (s->rv10_version == 3 && s->pict_type == FF_I_TYPE) {
int component, diff;
component = (n <= 3 ? 0 : n - 4 + 1);
level = s->last_dc[component];
if (s->rv10_first_dc_coded[component]) {
diff = rv_decode_dc(s, n);
if (diff == 0xffff)
return -1;
level += diff;
level = level & 0xff; /* handle wrap round */
s->last_dc[component] = level;
} else {
s->rv10_first_dc_coded[component] = 1;
}
} else {
level = get_bits(&s->gb, 8);
if (level == 255)
level = 128;
}
#endif
}else{
level = get_bits(&s->gb, 8);
if((level&0x7F) == 0){
av_log(s->avctx, AV_LOG_ERROR, "illegal dc %d at %d %d\n", level, s->mb_x, s->mb_y);
if(s->error_recognition >= FF_ER_COMPLIANT)
return -1;
}
if (level == 255)
level = 128;
}
block[0] = level;
i = 1;
} else {
i = 0;
}
if (!coded) {
if (s->mb_intra && s->h263_aic)
goto not_coded;
s->block_last_index[n] = i - 1;
return 0;
}
retry:
for(;;) {
code = get_vlc2(&s->gb, rl->vlc.table, TEX_VLC_BITS, 2);
if (code < 0){
av_log(s->avctx, AV_LOG_ERROR, "illegal ac vlc code at %dx%d\n", s->mb_x, s->mb_y);
return -1;
}
if (code == rl->n) {
/* escape */
if (CONFIG_FLV_DECODER && s->h263_flv > 1) {
ff_flv2_decode_ac_esc(&s->gb, &level, &run, &last);
} else {
last = get_bits1(&s->gb);
run = get_bits(&s->gb, 6);
level = (int8_t)get_bits(&s->gb, 8);
if(level == -128){
if (s->codec_id == CODEC_ID_RV10) {
/* XXX: should patch encoder too */
level = get_sbits(&s->gb, 12);
}else{
level = get_bits(&s->gb, 5);
level |= get_sbits(&s->gb, 6)<<5;
}
}
}
} else {
run = rl->table_run[code];
level = rl->table_level[code];
last = code >= rl->last;
if (get_bits1(&s->gb))
level = -level;
}
i += run;
if (i >= 64){
if(s->alt_inter_vlc && rl == &ff_h263_rl_inter && !s->mb_intra){
//Looks like a hack but no, it's the way it is supposed to work ...
rl = &rl_intra_aic;
i = 0;
s->gb= gb;
s->dsp.clear_block(block);
goto retry;
}
av_log(s->avctx, AV_LOG_ERROR, "run overflow at %dx%d i:%d\n", s->mb_x, s->mb_y, s->mb_intra);
return -1;
}
j = scan_table[i];
block[j] = level;
if (last)
break;
i++;
}
not_coded:
if (s->mb_intra && s->h263_aic) {
h263_pred_acdc(s, block, n);
i = 63;
}
s->block_last_index[n] = i;
return 0;
}
static int h263_skip_b_part(MpegEncContext *s, int cbp)
{
DECLARE_ALIGNED(16, DCTELEM, dblock[64]);
int i, mbi;
/* we have to set s->mb_intra to zero to decode B-part of PB-frame correctly
* but real value should be restored in order to be used later (in OBMC condition)
*/
mbi = s->mb_intra;
s->mb_intra = 0;
for (i = 0; i < 6; i++) {
if (h263_decode_block(s, dblock, i, cbp&32) < 0)
return -1;
cbp+=cbp;
}
s->mb_intra = mbi;
return 0;
}
static int h263_get_modb(GetBitContext *gb, int pb_frame, int *cbpb)
{
int c, mv = 1;
if (pb_frame < 3) { // h.263 Annex G and i263 PB-frame
c = get_bits1(gb);
if (pb_frame == 2 && c)
mv = !get_bits1(gb);
} else { // h.263 Annex M improved PB-frame
mv = get_unary(gb, 0, 4) + 1;
c = mv & 1;
mv = !!(mv & 2);
}
if(c)
*cbpb = get_bits(gb, 6);
return mv;
}
int ff_h263_decode_mb(MpegEncContext *s,
DCTELEM block[6][64])
{
int cbpc, cbpy, i, cbp, pred_x, pred_y, mx, my, dquant;
int16_t *mot_val;
const int xy= s->mb_x + s->mb_y * s->mb_stride;
int cbpb = 0, pb_mv_count = 0;
assert(!s->h263_pred);
if (s->pict_type == FF_P_TYPE) {
do{
if (get_bits1(&s->gb)) {
/* skip mb */
s->mb_intra = 0;
for(i=0;i<6;i++)
s->block_last_index[i] = -1;
s->mv_dir = MV_DIR_FORWARD;
s->mv_type = MV_TYPE_16X16;
s->current_picture.mb_type[xy]= MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_L0;
s->mv[0][0][0] = 0;
s->mv[0][0][1] = 0;
s->mb_skipped = !(s->obmc | s->loop_filter);
goto end;
}
cbpc = get_vlc2(&s->gb, ff_h263_inter_MCBPC_vlc.table, INTER_MCBPC_VLC_BITS, 2);
if (cbpc < 0){
av_log(s->avctx, AV_LOG_ERROR, "cbpc damaged at %d %d\n", s->mb_x, s->mb_y);
return -1;
}
}while(cbpc == 20);
s->dsp.clear_blocks(s->block[0]);
dquant = cbpc & 8;
s->mb_intra = ((cbpc & 4) != 0);
if (s->mb_intra) goto intra;
if(s->pb_frame && get_bits1(&s->gb))
pb_mv_count = h263_get_modb(&s->gb, s->pb_frame, &cbpb);
cbpy = get_vlc2(&s->gb, ff_h263_cbpy_vlc.table, CBPY_VLC_BITS, 1);
if(s->alt_inter_vlc==0 || (cbpc & 3)!=3)
cbpy ^= 0xF;
cbp = (cbpc & 3) | (cbpy << 2);
if (dquant) {
h263_decode_dquant(s);
}
s->mv_dir = MV_DIR_FORWARD;
if ((cbpc & 16) == 0) {
s->current_picture.mb_type[xy]= MB_TYPE_16x16 | MB_TYPE_L0;
/* 16x16 motion prediction */
s->mv_type = MV_TYPE_16X16;
h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
if (s->umvplus)
mx = h263p_decode_umotion(s, pred_x);
else
mx = h263_decode_motion(s, pred_x, 1);
if (mx >= 0xffff)
return -1;
if (s->umvplus)
my = h263p_decode_umotion(s, pred_y);
else
my = h263_decode_motion(s, pred_y, 1);
if (my >= 0xffff)
return -1;
s->mv[0][0][0] = mx;
s->mv[0][0][1] = my;
if (s->umvplus && (mx - pred_x) == 1 && (my - pred_y) == 1)
skip_bits1(&s->gb); /* Bit stuffing to prevent PSC */
} else {
s->current_picture.mb_type[xy]= MB_TYPE_8x8 | MB_TYPE_L0;
s->mv_type = MV_TYPE_8X8;
for(i=0;i<4;i++) {
mot_val = h263_pred_motion(s, i, 0, &pred_x, &pred_y);
if (s->umvplus)
mx = h263p_decode_umotion(s, pred_x);
else
mx = h263_decode_motion(s, pred_x, 1);
if (mx >= 0xffff)
return -1;
if (s->umvplus)
my = h263p_decode_umotion(s, pred_y);
else
my = h263_decode_motion(s, pred_y, 1);
if (my >= 0xffff)
return -1;
s->mv[0][i][0] = mx;
s->mv[0][i][1] = my;
if (s->umvplus && (mx - pred_x) == 1 && (my - pred_y) == 1)
skip_bits1(&s->gb); /* Bit stuffing to prevent PSC */
mot_val[0] = mx;
mot_val[1] = my;
}
}
} else if(s->pict_type==FF_B_TYPE) {
int mb_type;
const int stride= s->b8_stride;
int16_t *mot_val0 = s->current_picture.motion_val[0][ 2*(s->mb_x + s->mb_y*stride) ];
int16_t *mot_val1 = s->current_picture.motion_val[1][ 2*(s->mb_x + s->mb_y*stride) ];
// const int mv_xy= s->mb_x + 1 + s->mb_y * s->mb_stride;
//FIXME ugly
mot_val0[0 ]= mot_val0[2 ]= mot_val0[0+2*stride]= mot_val0[2+2*stride]=
mot_val0[1 ]= mot_val0[3 ]= mot_val0[1+2*stride]= mot_val0[3+2*stride]=
mot_val1[0 ]= mot_val1[2 ]= mot_val1[0+2*stride]= mot_val1[2+2*stride]=
mot_val1[1 ]= mot_val1[3 ]= mot_val1[1+2*stride]= mot_val1[3+2*stride]= 0;
do{
mb_type= get_vlc2(&s->gb, h263_mbtype_b_vlc.table, H263_MBTYPE_B_VLC_BITS, 2);
if (mb_type < 0){
av_log(s->avctx, AV_LOG_ERROR, "b mb_type damaged at %d %d\n", s->mb_x, s->mb_y);
return -1;
}
mb_type= h263_mb_type_b_map[ mb_type ];
}while(!mb_type);
s->mb_intra = IS_INTRA(mb_type);
if(HAS_CBP(mb_type)){
s->dsp.clear_blocks(s->block[0]);
cbpc = get_vlc2(&s->gb, cbpc_b_vlc.table, CBPC_B_VLC_BITS, 1);
if(s->mb_intra){
dquant = IS_QUANT(mb_type);
goto intra;
}
cbpy = get_vlc2(&s->gb, ff_h263_cbpy_vlc.table, CBPY_VLC_BITS, 1);
if (cbpy < 0){
av_log(s->avctx, AV_LOG_ERROR, "b cbpy damaged at %d %d\n", s->mb_x, s->mb_y);
return -1;
}
if(s->alt_inter_vlc==0 || (cbpc & 3)!=3)
cbpy ^= 0xF;
cbp = (cbpc & 3) | (cbpy << 2);
}else
cbp=0;
assert(!s->mb_intra);
if(IS_QUANT(mb_type)){
h263_decode_dquant(s);
}
if(IS_DIRECT(mb_type)){
s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
mb_type |= ff_mpeg4_set_direct_mv(s, 0, 0);
}else{
s->mv_dir = 0;
s->mv_type= MV_TYPE_16X16;
//FIXME UMV
if(USES_LIST(mb_type, 0)){
int16_t *mot_val= h263_pred_motion(s, 0, 0, &mx, &my);
s->mv_dir = MV_DIR_FORWARD;
mx = h263_decode_motion(s, mx, 1);
my = h263_decode_motion(s, my, 1);
s->mv[0][0][0] = mx;
s->mv[0][0][1] = my;
mot_val[0 ]= mot_val[2 ]= mot_val[0+2*stride]= mot_val[2+2*stride]= mx;
mot_val[1 ]= mot_val[3 ]= mot_val[1+2*stride]= mot_val[3+2*stride]= my;
}
if(USES_LIST(mb_type, 1)){
int16_t *mot_val= h263_pred_motion(s, 0, 1, &mx, &my);
s->mv_dir |= MV_DIR_BACKWARD;
mx = h263_decode_motion(s, mx, 1);
my = h263_decode_motion(s, my, 1);
s->mv[1][0][0] = mx;
s->mv[1][0][1] = my;
mot_val[0 ]= mot_val[2 ]= mot_val[0+2*stride]= mot_val[2+2*stride]= mx;
mot_val[1 ]= mot_val[3 ]= mot_val[1+2*stride]= mot_val[3+2*stride]= my;
}
}
s->current_picture.mb_type[xy]= mb_type;
} else { /* I-Frame */
do{
cbpc = get_vlc2(&s->gb, ff_h263_intra_MCBPC_vlc.table, INTRA_MCBPC_VLC_BITS, 2);
if (cbpc < 0){
av_log(s->avctx, AV_LOG_ERROR, "I cbpc damaged at %d %d\n", s->mb_x, s->mb_y);
return -1;
}
}while(cbpc == 8);
s->dsp.clear_blocks(s->block[0]);
dquant = cbpc & 4;
s->mb_intra = 1;
intra:
s->current_picture.mb_type[xy]= MB_TYPE_INTRA;
if (s->h263_aic) {
s->ac_pred = get_bits1(&s->gb);
if(s->ac_pred){
s->current_picture.mb_type[xy]= MB_TYPE_INTRA | MB_TYPE_ACPRED;
s->h263_aic_dir = get_bits1(&s->gb);
}
}else
s->ac_pred = 0;
if(s->pb_frame && get_bits1(&s->gb))
pb_mv_count = h263_get_modb(&s->gb, s->pb_frame, &cbpb);
cbpy = get_vlc2(&s->gb, ff_h263_cbpy_vlc.table, CBPY_VLC_BITS, 1);
if(cbpy<0){
av_log(s->avctx, AV_LOG_ERROR, "I cbpy damaged at %d %d\n", s->mb_x, s->mb_y);
return -1;
}
cbp = (cbpc & 3) | (cbpy << 2);
if (dquant) {
h263_decode_dquant(s);
}
pb_mv_count += !!s->pb_frame;
}
while(pb_mv_count--){
h263_decode_motion(s, 0, 1);
h263_decode_motion(s, 0, 1);
}
/* decode each block */
for (i = 0; i < 6; i++) {
if (h263_decode_block(s, block[i], i, cbp&32) < 0)
return -1;
cbp+=cbp;
}
if(s->pb_frame && h263_skip_b_part(s, cbpb) < 0)
return -1;
if(s->obmc && !s->mb_intra){
if(s->pict_type == FF_P_TYPE && s->mb_x+1<s->mb_width && s->mb_num_left != 1)
preview_obmc(s);
}
end:
/* per-MB end of slice check */
{
int v= show_bits(&s->gb, 16);
if(get_bits_count(&s->gb) + 16 > s->gb.size_in_bits){
v>>= get_bits_count(&s->gb) + 16 - s->gb.size_in_bits;
}
if(v==0)
return SLICE_END;
}
return SLICE_OK;
}
/* most is hardcoded. should extend to handle all h263 streams */
int h263_decode_picture_header(MpegEncContext *s)
{
int format, width, height, i;
uint32_t startcode;
align_get_bits(&s->gb);
startcode= get_bits(&s->gb, 22-8);
for(i= get_bits_left(&s->gb); i>24; i-=8) {
startcode = ((startcode << 8) | get_bits(&s->gb, 8)) & 0x003FFFFF;
if(startcode == 0x20)
break;
}
if (startcode != 0x20) {
av_log(s->avctx, AV_LOG_ERROR, "Bad picture start code\n");
return -1;
}
/* temporal reference */
i = get_bits(&s->gb, 8); /* picture timestamp */
if( (s->picture_number&~0xFF)+i < s->picture_number)
i+= 256;
s->current_picture_ptr->pts=
s->picture_number= (s->picture_number&~0xFF) + i;
/* PTYPE starts here */
if (get_bits1(&s->gb) != 1) {
/* marker */
av_log(s->avctx, AV_LOG_ERROR, "Bad marker\n");
return -1;
}
if (get_bits1(&s->gb) != 0) {
av_log(s->avctx, AV_LOG_ERROR, "Bad H263 id\n");
return -1; /* h263 id */
}
skip_bits1(&s->gb); /* split screen off */
skip_bits1(&s->gb); /* camera off */
skip_bits1(&s->gb); /* freeze picture release off */
format = get_bits(&s->gb, 3);
/*
0 forbidden
1 sub-QCIF
10 QCIF
7 extended PTYPE (PLUSPTYPE)
*/
if (format != 7 && format != 6) {
s->h263_plus = 0;
/* H.263v1 */
width = h263_format[format][0];
height = h263_format[format][1];
if (!width)
return -1;
s->pict_type = FF_I_TYPE + get_bits1(&s->gb);
s->h263_long_vectors = get_bits1(&s->gb);
if (get_bits1(&s->gb) != 0) {
av_log(s->avctx, AV_LOG_ERROR, "H263 SAC not supported\n");
return -1; /* SAC: off */
}
s->obmc= get_bits1(&s->gb); /* Advanced prediction mode */
s->unrestricted_mv = s->h263_long_vectors || s->obmc;
s->pb_frame = get_bits1(&s->gb);
s->chroma_qscale= s->qscale = get_bits(&s->gb, 5);
skip_bits1(&s->gb); /* Continuous Presence Multipoint mode: off */
s->width = width;
s->height = height;
s->avctx->sample_aspect_ratio= (AVRational){12,11};
s->avctx->time_base= (AVRational){1001, 30000};
} else {
int ufep;
/* H.263v2 */
s->h263_plus = 1;
ufep = get_bits(&s->gb, 3); /* Update Full Extended PTYPE */
/* ufep other than 0 and 1 are reserved */
if (ufep == 1) {
/* OPPTYPE */
format = get_bits(&s->gb, 3);
dprintf(s->avctx, "ufep=1, format: %d\n", format);
s->custom_pcf= get_bits1(&s->gb);
s->umvplus = get_bits1(&s->gb); /* Unrestricted Motion Vector */
if (get_bits1(&s->gb) != 0) {
av_log(s->avctx, AV_LOG_ERROR, "Syntax-based Arithmetic Coding (SAC) not supported\n");
}
s->obmc= get_bits1(&s->gb); /* Advanced prediction mode */
s->h263_aic = get_bits1(&s->gb); /* Advanced Intra Coding (AIC) */
s->loop_filter= get_bits1(&s->gb);
s->unrestricted_mv = s->umvplus || s->obmc || s->loop_filter;
s->h263_slice_structured= get_bits1(&s->gb);
if (get_bits1(&s->gb) != 0) {
av_log(s->avctx, AV_LOG_ERROR, "Reference Picture Selection not supported\n");
}
if (get_bits1(&s->gb) != 0) {
av_log(s->avctx, AV_LOG_ERROR, "Independent Segment Decoding not supported\n");
}
s->alt_inter_vlc= get_bits1(&s->gb);
s->modified_quant= get_bits1(&s->gb);
if(s->modified_quant)
s->chroma_qscale_table= ff_h263_chroma_qscale_table;
skip_bits(&s->gb, 1); /* Prevent start code emulation */
skip_bits(&s->gb, 3); /* Reserved */
} else if (ufep != 0) {
av_log(s->avctx, AV_LOG_ERROR, "Bad UFEP type (%d)\n", ufep);
return -1;
}
/* MPPTYPE */
s->pict_type = get_bits(&s->gb, 3);
switch(s->pict_type){
case 0: s->pict_type= FF_I_TYPE;break;
case 1: s->pict_type= FF_P_TYPE;break;
case 2: s->pict_type= FF_P_TYPE;s->pb_frame = 3;break;
case 3: s->pict_type= FF_B_TYPE;break;
case 7: s->pict_type= FF_I_TYPE;break; //ZYGO
default:
return -1;
}
skip_bits(&s->gb, 2);
s->no_rounding = get_bits1(&s->gb);
skip_bits(&s->gb, 4);
/* Get the picture dimensions */
if (ufep) {
if (format == 6) {
/* Custom Picture Format (CPFMT) */
s->aspect_ratio_info = get_bits(&s->gb, 4);
dprintf(s->avctx, "aspect: %d\n", s->aspect_ratio_info);
/* aspect ratios:
0 - forbidden
1 - 1:1
2 - 12:11 (CIF 4:3)
3 - 10:11 (525-type 4:3)
4 - 16:11 (CIF 16:9)
5 - 40:33 (525-type 16:9)
6-14 - reserved
*/
width = (get_bits(&s->gb, 9) + 1) * 4;
skip_bits1(&s->gb);
height = get_bits(&s->gb, 9) * 4;
dprintf(s->avctx, "\nH.263+ Custom picture: %dx%d\n",width,height);
if (s->aspect_ratio_info == FF_ASPECT_EXTENDED) {
/* aspected dimensions */
s->avctx->sample_aspect_ratio.num= get_bits(&s->gb, 8);
s->avctx->sample_aspect_ratio.den= get_bits(&s->gb, 8);
}else{
s->avctx->sample_aspect_ratio= ff_h263_pixel_aspect[s->aspect_ratio_info];
}
} else {
width = h263_format[format][0];
height = h263_format[format][1];
s->avctx->sample_aspect_ratio= (AVRational){12,11};
}
if ((width == 0) || (height == 0))
return -1;
s->width = width;
s->height = height;
if(s->custom_pcf){
int gcd;
s->avctx->time_base.den= 1800000;
s->avctx->time_base.num= 1000 + get_bits1(&s->gb);
s->avctx->time_base.num*= get_bits(&s->gb, 7);
if(s->avctx->time_base.num == 0){
av_log(s, AV_LOG_ERROR, "zero framerate\n");
return -1;
}
gcd= av_gcd(s->avctx->time_base.den, s->avctx->time_base.num);
s->avctx->time_base.den /= gcd;
s->avctx->time_base.num /= gcd;
}else{
s->avctx->time_base= (AVRational){1001, 30000};
}
}
if(s->custom_pcf){
skip_bits(&s->gb, 2); //extended Temporal reference
}
if (ufep) {
if (s->umvplus) {
if(get_bits1(&s->gb)==0) /* Unlimited Unrestricted Motion Vectors Indicator (UUI) */
skip_bits1(&s->gb);
}
if(s->h263_slice_structured){
if (get_bits1(&s->gb) != 0) {
av_log(s->avctx, AV_LOG_ERROR, "rectangular slices not supported\n");
}
if (get_bits1(&s->gb) != 0) {
av_log(s->avctx, AV_LOG_ERROR, "unordered slices not supported\n");
}
}
}
s->qscale = get_bits(&s->gb, 5);
}
s->mb_width = (s->width + 15) / 16;
s->mb_height = (s->height + 15) / 16;
s->mb_num = s->mb_width * s->mb_height;
if (s->pb_frame) {
skip_bits(&s->gb, 3); /* Temporal reference for B-pictures */
if (s->custom_pcf)
skip_bits(&s->gb, 2); //extended Temporal reference
skip_bits(&s->gb, 2); /* Quantization information for B-pictures */
}
/* PEI */
while (get_bits1(&s->gb) != 0) {
skip_bits(&s->gb, 8);
}
if(s->h263_slice_structured){
if (get_bits1(&s->gb) != 1) {
av_log(s->avctx, AV_LOG_ERROR, "SEPB1 marker missing\n");
return -1;
}
ff_h263_decode_mba(s);
if (get_bits1(&s->gb) != 1) {
av_log(s->avctx, AV_LOG_ERROR, "SEPB2 marker missing\n");
return -1;
}
}
s->f_code = 1;
if(s->h263_aic){
s->y_dc_scale_table=
s->c_dc_scale_table= ff_aic_dc_scale_table;
}else{
s->y_dc_scale_table=
s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
}
ff_h263_show_pict_info(s);
if (s->pict_type == FF_I_TYPE && s->codec_tag == AV_RL32("ZYGO")){
int i,j;
for(i=0; i<85; i++) av_log(s->avctx, AV_LOG_DEBUG, "%d", get_bits1(&s->gb));
av_log(s->avctx, AV_LOG_DEBUG, "\n");
for(i=0; i<13; i++){
for(j=0; j<3; j++){
int v= get_bits(&s->gb, 8);
v |= get_sbits(&s->gb, 8)<<8;
av_log(s->avctx, AV_LOG_DEBUG, " %5d", v);
}
av_log(s->avctx, AV_LOG_DEBUG, "\n");
}
for(i=0; i<50; i++) av_log(s->avctx, AV_LOG_DEBUG, "%d", get_bits1(&s->gb));
}
return 0;
}
libavcodec/h263.h
View file @ c9038784
......@@ -32,6 +32,8 @@
extern const AVRational ff_h263_pixel_aspect[16];
extern const uint8_t ff_h263_cbpy_tab[16][2];
extern const uint8_t cbpc_b_tab[4][2];
extern const uint8_t mvtab[33][2];
extern const uint8_t ff_h263_intra_MCBPC_code[9];
......@@ -39,6 +41,7 @@ extern const uint8_t ff_h263_intra_MCBPC_bits[9];
extern const uint8_t ff_h263_inter_MCBPC_code[28];
extern const uint8_t ff_h263_inter_MCBPC_bits[28];
extern const uint8_t h263_mbtype_b_tab[15][2];
extern VLC ff_h263_intra_MCBPC_vlc;
extern VLC ff_h263_inter_MCBPC_vlc;
......@@ -46,8 +49,66 @@ extern VLC ff_h263_cbpy_vlc;
extern RLTable ff_h263_rl_inter;
extern RLTable rl_intra_aic;
extern const uint16_t h263_format[8][2];
extern const uint8_t modified_quant_tab[2][32];
extern uint16_t ff_mba_max[6];
extern uint8_t ff_mba_length[7];
extern uint8_t ff_h263_static_rl_table_store[2][2][2*MAX_RUN + MAX_LEVEL + 3];
int h263_decode_motion(MpegEncContext * s, int pred, int f_code);
av_const int ff_h263_aspect_to_info(AVRational aspect);
int ff_h263_decode_init(AVCodecContext *avctx);
int ff_h263_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
AVPacket *avpkt);
int ff_h263_decode_end(AVCodecContext *avctx);
void h263_encode_mb(MpegEncContext *s,
DCTELEM block[6][64],
int motion_x, int motion_y);
void h263_encode_picture_header(MpegEncContext *s, int picture_number);
void h263_encode_gob_header(MpegEncContext * s, int mb_line);
int16_t *h263_pred_motion(MpegEncContext * s, int block, int dir,
int *px, int *py);
void h263_encode_init(MpegEncContext *s);
void h263_decode_init_vlc(MpegEncContext *s);
int h263_decode_picture_header(MpegEncContext *s);
int ff_h263_decode_gob_header(MpegEncContext *s);
void ff_h263_update_motion_val(MpegEncContext * s);
void ff_h263_loop_filter(MpegEncContext * s);
void ff_set_qscale(MpegEncContext * s, int qscale);
int ff_h263_decode_mba(MpegEncContext *s);
void ff_h263_encode_mba(MpegEncContext *s);
void ff_init_qscale_tab(MpegEncContext *s);
int h263_pred_dc(MpegEncContext * s, int n, int16_t **dc_val_ptr);
void h263_pred_acdc(MpegEncContext * s, DCTELEM *block, int n);
/**
* Prints picture info if FF_DEBUG_PICT_INFO is set.
*/
void ff_h263_show_pict_info(MpegEncContext *s);
int ff_intel_h263_decode_picture_header(MpegEncContext *s);
int ff_h263_decode_mb(MpegEncContext *s,
DCTELEM block[6][64]);
/**
* Returns the value of the 3bit "source format" syntax element.
* that represents some standard picture dimensions or indicates that
* width&height are explicitly stored later.
*/
int av_const h263_get_picture_format(int width, int height);
void ff_clean_h263_qscales(MpegEncContext *s);
int ff_h263_resync(MpegEncContext *s);
const uint8_t *ff_h263_find_resync_marker(const uint8_t *p, const uint8_t *end);
int ff_h263_get_gob_height(MpegEncContext *s);
void ff_h263_encode_motion(MpegEncContext * s, int val, int f_code);
static inline int h263_get_motion_length(MpegEncContext * s, int val, int f_code){
int l, bit_size, code;
......@@ -175,4 +236,11 @@ static inline int get_b_cbp(MpegEncContext * s, DCTELEM block[6][64],
}
return cbp;
}
static inline void memsetw(short *tab, int val, int n)
{
int i;
for(i=0;i<n;i++)
tab[i] = val;
}
#endif
libavcodec/h263data.h
View file @ c9038784
......@@ -57,7 +57,7 @@ const uint8_t ff_h263_inter_MCBPC_bits[28] = {
11, 13, 13, 13,/* inter4Q*/
};
static const uint8_t h263_mbtype_b_tab[15][2] = {
const uint8_t h263_mbtype_b_tab[15][2] = {
{1, 1},
{3, 3},
{1, 5},
......@@ -75,25 +75,7 @@ static const uint8_t h263_mbtype_b_tab[15][2] = {
{1, 8},
};
static const int h263_mb_type_b_map[15]= {
MB_TYPE_DIRECT2 | MB_TYPE_L0L1,
MB_TYPE_DIRECT2 | MB_TYPE_L0L1 | MB_TYPE_CBP,
MB_TYPE_DIRECT2 | MB_TYPE_L0L1 | MB_TYPE_CBP | MB_TYPE_QUANT,
MB_TYPE_L0 | MB_TYPE_16x16,
MB_TYPE_L0 | MB_TYPE_CBP | MB_TYPE_16x16,
MB_TYPE_L0 | MB_TYPE_CBP | MB_TYPE_QUANT | MB_TYPE_16x16,
MB_TYPE_L1 | MB_TYPE_16x16,
MB_TYPE_L1 | MB_TYPE_CBP | MB_TYPE_16x16,
MB_TYPE_L1 | MB_TYPE_CBP | MB_TYPE_QUANT | MB_TYPE_16x16,
MB_TYPE_L0L1 | MB_TYPE_16x16,
MB_TYPE_L0L1 | MB_TYPE_CBP | MB_TYPE_16x16,
MB_TYPE_L0L1 | MB_TYPE_CBP | MB_TYPE_QUANT | MB_TYPE_16x16,
0, //stuffing
MB_TYPE_INTRA4x4 | MB_TYPE_CBP,
MB_TYPE_INTRA4x4 | MB_TYPE_CBP | MB_TYPE_QUANT,
};
static const uint8_t cbpc_b_tab[4][2] = {
const uint8_t cbpc_b_tab[4][2] = {
{0, 1},
{2, 2},
{7, 3},
......@@ -246,7 +228,7 @@ static const int8_t intra_level_aic[102] = {
1, 1, 1, 1, 1, 1,
};
static RLTable rl_intra_aic = {
RLTable rl_intra_aic = {
102,
58,
intra_vlc_aic,
......@@ -254,25 +236,7 @@ static RLTable rl_intra_aic = {
intra_level_aic,
};
#if CONFIG_ENCODERS
static const uint8_t wrong_run[102] = {
1, 2, 3, 5, 4, 10, 9, 8,
11, 15, 17, 16, 23, 22, 21, 20,
19, 18, 25, 24, 27, 26, 11, 7,
6, 1, 2, 13, 2, 2, 2, 2,
6, 12, 3, 9, 1, 3, 4, 3,
7, 4, 1, 1, 5, 5, 14, 6,
1, 7, 1, 8, 1, 1, 1, 1,
10, 1, 1, 5, 9, 17, 25, 24,
29, 33, 32, 41, 2, 23, 28, 31,
3, 22, 30, 4, 27, 40, 8, 26,
6, 39, 7, 38, 16, 37, 15, 10,
11, 12, 13, 14, 1, 21, 20, 18,
19, 2, 1, 34, 35, 36
};
#endif
static const uint16_t h263_format[8][2] = {
const uint16_t h263_format[8][2] = {
{ 0, 0 },
{ 128, 96 },
{ 176, 144 },
......@@ -286,7 +250,7 @@ const uint8_t ff_aic_dc_scale_table[32]={
0, 2, 4, 6, 8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62
};
static const uint8_t modified_quant_tab[2][32]={
const uint8_t modified_quant_tab[2][32]={
// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
{
0, 3, 1, 2, 3, 4, 5, 6, 7, 8, 9, 9,10,11,12,13,14,15,16,17,18,18,19,20,21,22,23,24,25,26,27,28
......@@ -300,11 +264,11 @@ const uint8_t ff_h263_chroma_qscale_table[32]={
0, 1, 2, 3, 4, 5, 6, 6, 7, 8, 9, 9,10,10,11,11,12,12,12,13,13,13,14,14,14,14,14,15,15,15,15,15
};
const uint16_t ff_mba_max[6]={
uint16_t ff_mba_max[6]={
47, 98, 395,1583,6335,9215
};
const uint8_t ff_mba_length[7]={
uint8_t ff_mba_length[7]={
6, 7, 9, 11, 13, 14, 14
};
......
libavcodec/h263dec.c
View file @ c9038784
......@@ -29,6 +29,7 @@
#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
#include "h263.h"
#include "h263_parser.h"
#include "mpeg4video_parser.h"
#include "msmpeg4.h"
......
libavcodec/intelh263dec.c
View file @ c9038784
......@@ -19,6 +19,7 @@
*/
#include "mpegvideo.h"
#include "h263.h"
/* don't understand why they choose a different header ! */
int ff_intel_h263_decode_picture_header(MpegEncContext *s)
......
libavcodec/ituh263dec.c 0 → 100644
View file @ c9038784
/*
* ITU H263 bitstream decoder
* Copyright (c) 2000,2001 Fabrice Bellard
* H263+ support.
* Copyright (c) 2001 Juan J. Sierralta P
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* 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
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file libavcodec/ituh263dec.c
* h263 decoder.
*/
//#define DEBUG
#include <limits.h>
#include "dsputil.h"
#include "avcodec.h"
#include "mpegvideo.h"
#include "h263.h"
#include "mathops.h"
#include "unary.h"
#include "flv.h"
#include "mpeg4video.h"
//#undef NDEBUG
//#include <assert.h>
// The defines below define the number of bits that are read at once for
// reading vlc values. Changing these may improve speed and data cache needs
// be aware though that decreasing them may need the number of stages that is
// passed to get_vlc* to be increased.
#define MV_VLC_BITS 9
#define H263_MBTYPE_B_VLC_BITS 6
#define CBPC_B_VLC_BITS 3
static const int h263_mb_type_b_map[15]= {
MB_TYPE_DIRECT2 | MB_TYPE_L0L1,
MB_TYPE_DIRECT2 | MB_TYPE_L0L1 | MB_TYPE_CBP,
MB_TYPE_DIRECT2 | MB_TYPE_L0L1 | MB_TYPE_CBP | MB_TYPE_QUANT,
MB_TYPE_L0 | MB_TYPE_16x16,
MB_TYPE_L0 | MB_TYPE_CBP | MB_TYPE_16x16,
MB_TYPE_L0 | MB_TYPE_CBP | MB_TYPE_QUANT | MB_TYPE_16x16,
MB_TYPE_L1 | MB_TYPE_16x16,
MB_TYPE_L1 | MB_TYPE_CBP | MB_TYPE_16x16,
MB_TYPE_L1 | MB_TYPE_CBP | MB_TYPE_QUANT | MB_TYPE_16x16,
MB_TYPE_L0L1 | MB_TYPE_16x16,
MB_TYPE_L0L1 | MB_TYPE_CBP | MB_TYPE_16x16,
MB_TYPE_L0L1 | MB_TYPE_CBP | MB_TYPE_QUANT | MB_TYPE_16x16,
0, //stuffing
MB_TYPE_INTRA4x4 | MB_TYPE_CBP,
MB_TYPE_INTRA4x4 | MB_TYPE_CBP | MB_TYPE_QUANT,
};
void ff_h263_show_pict_info(MpegEncContext *s){
if(s->avctx->debug&FF_DEBUG_PICT_INFO){
av_log(s->avctx, AV_LOG_DEBUG, "qp:%d %c size:%d rnd:%d%s%s%s%s%s%s%s%s%s %d/%d\n",
s->qscale, av_get_pict_type_char(s->pict_type),
s->gb.size_in_bits, 1-s->no_rounding,
s->obmc ? " AP" : "",
s->umvplus ? " UMV" : "",
s->h263_long_vectors ? " LONG" : "",
s->h263_plus ? " +" : "",
s->h263_aic ? " AIC" : "",
s->alt_inter_vlc ? " AIV" : "",
s->modified_quant ? " MQ" : "",
s->loop_filter ? " LOOP" : "",
s->h263_slice_structured ? " SS" : "",
s->avctx->time_base.den, s->avctx->time_base.num
);
}
}
/***********************************************/
/* decoding */
VLC ff_h263_intra_MCBPC_vlc;
VLC ff_h263_inter_MCBPC_vlc;
VLC ff_h263_cbpy_vlc;
static VLC mv_vlc;
static VLC h263_mbtype_b_vlc;
static VLC cbpc_b_vlc;
/* init vlcs */
/* XXX: find a better solution to handle static init */
void h263_decode_init_vlc(MpegEncContext *s)
{
static int done = 0;
if (!done) {
done = 1;
INIT_VLC_STATIC(&ff_h263_intra_MCBPC_vlc, INTRA_MCBPC_VLC_BITS, 9,
ff_h263_intra_MCBPC_bits, 1, 1,
ff_h263_intra_MCBPC_code, 1, 1, 72);
INIT_VLC_STATIC(&ff_h263_inter_MCBPC_vlc, INTER_MCBPC_VLC_BITS, 28,
ff_h263_inter_MCBPC_bits, 1, 1,
ff_h263_inter_MCBPC_code, 1, 1, 198);
INIT_VLC_STATIC(&ff_h263_cbpy_vlc, CBPY_VLC_BITS, 16,
&ff_h263_cbpy_tab[0][1], 2, 1,
&ff_h263_cbpy_tab[0][0], 2, 1, 64);
INIT_VLC_STATIC(&mv_vlc, MV_VLC_BITS, 33,
&mvtab[0][1], 2, 1,
&mvtab[0][0], 2, 1, 538);
init_rl(&ff_h263_rl_inter, ff_h263_static_rl_table_store[0]);
init_rl(&rl_intra_aic, ff_h263_static_rl_table_store[1]);
INIT_VLC_RL(ff_h263_rl_inter, 554);
INIT_VLC_RL(rl_intra_aic, 554);
INIT_VLC_STATIC(&h263_mbtype_b_vlc, H263_MBTYPE_B_VLC_BITS, 15,
&h263_mbtype_b_tab[0][1], 2, 1,
&h263_mbtype_b_tab[0][0], 2, 1, 80);
INIT_VLC_STATIC(&cbpc_b_vlc, CBPC_B_VLC_BITS, 4,
&cbpc_b_tab[0][1], 2, 1,
&cbpc_b_tab[0][0], 2, 1, 8);
}
}
int ff_h263_decode_mba(MpegEncContext *s)
{
int i, mb_pos;
for(i=0; i<6; i++){
if(s->mb_num-1 <= ff_mba_max[i]) break;
}
mb_pos= get_bits(&s->gb, ff_mba_length[i]);
s->mb_x= mb_pos % s->mb_width;
s->mb_y= mb_pos / s->mb_width;
return mb_pos;
}
/**
* decodes the group of blocks header or slice header.
* @return <0 if an error occurred
*/
static int h263_decode_gob_header(MpegEncContext *s)
{
unsigned int val, gfid, gob_number;
int left;
/* Check for GOB Start Code */
val = show_bits(&s->gb, 16);
if(val)
return -1;
/* We have a GBSC probably with GSTUFF */
skip_bits(&s->gb, 16); /* Drop the zeros */
left= get_bits_left(&s->gb);
//MN: we must check the bits left or we might end in a infinite loop (or segfault)
for(;left>13; left--){
if(get_bits1(&s->gb)) break; /* Seek the '1' bit */
}
if(left<=13)
return -1;
if(s->h263_slice_structured){
if(get_bits1(&s->gb)==0)
return -1;
ff_h263_decode_mba(s);
if(s->mb_num > 1583)
if(get_bits1(&s->gb)==0)
return -1;
s->qscale = get_bits(&s->gb, 5); /* SQUANT */
if(get_bits1(&s->gb)==0)
return -1;
gfid = get_bits(&s->gb, 2); /* GFID */
}else{
gob_number = get_bits(&s->gb, 5); /* GN */
s->mb_x= 0;
s->mb_y= s->gob_index* gob_number;
gfid = get_bits(&s->gb, 2); /* GFID */
s->qscale = get_bits(&s->gb, 5); /* GQUANT */
}
if(s->mb_y >= s->mb_height)
return -1;
if(s->qscale==0)
return -1;
return 0;
}
/**
* finds the next resync_marker
* @param p pointer to buffer to scan
* @param end pointer to the end of the buffer
* @return pointer to the next resync_marker, or end if none was found
*/
const uint8_t *ff_h263_find_resync_marker(const uint8_t *restrict p, const uint8_t * restrict end)
{
assert(p < end);
end-=2;
p++;
for(;p<end; p+=2){
if(!*p){
if (!p[-1] && p[1]) return p - 1;
else if(!p[ 1] && p[2]) return p;
}
}
return end+2;
}
/**
* decodes the group of blocks / video packet header.
* @return bit position of the resync_marker, or <0 if none was found
*/
int ff_h263_resync(MpegEncContext *s){
int left, pos, ret;
if(s->codec_id==CODEC_ID_MPEG4){
skip_bits1(&s->gb);
align_get_bits(&s->gb);
}
if(show_bits(&s->gb, 16)==0){
pos= get_bits_count(&s->gb);
if(CONFIG_MPEG4_DECODER && s->codec_id==CODEC_ID_MPEG4)
ret= mpeg4_decode_video_packet_header(s);
else
ret= h263_decode_gob_header(s);
if(ret>=0)
return pos;
}
//OK, it's not where it is supposed to be ...
s->gb= s->last_resync_gb;
align_get_bits(&s->gb);
left= get_bits_left(&s->gb);
for(;left>16+1+5+5; left-=8){
if(show_bits(&s->gb, 16)==0){
GetBitContext bak= s->gb;
pos= get_bits_count(&s->gb);
if(CONFIG_MPEG4_DECODER && s->codec_id==CODEC_ID_MPEG4)
ret= mpeg4_decode_video_packet_header(s);
else
ret= h263_decode_gob_header(s);
if(ret>=0)
return pos;
s->gb= bak;
}
skip_bits(&s->gb, 8);
}
return -1;
}
int h263_decode_motion(MpegEncContext * s, int pred, int f_code)
{
int code, val, sign, shift, l;
code = get_vlc2(&s->gb, mv_vlc.table, MV_VLC_BITS, 2);
if (code == 0)
return pred;
if (code < 0)
return 0xffff;
sign = get_bits1(&s->gb);
shift = f_code - 1;
val = code;
if (shift) {
val = (val - 1) << shift;
val |= get_bits(&s->gb, shift);
val++;
}
if (sign)
val = -val;
val += pred;
/* modulo decoding */
if (!s->h263_long_vectors) {
l = INT_BIT - 5 - f_code;
val = (val<<l)>>l;
} else {
/* horrible h263 long vector mode */
if (pred < -31 && val < -63)
val += 64;
if (pred > 32 && val > 63)
val -= 64;
}
return val;
}
/* Decodes RVLC of H.263+ UMV */
static int h263p_decode_umotion(MpegEncContext * s, int pred)
{
int code = 0, sign;
if (get_bits1(&s->gb)) /* Motion difference = 0 */
return pred;
code = 2 + get_bits1(&s->gb);
while (get_bits1(&s->gb))
{
code <<= 1;
code += get_bits1(&s->gb);
}
sign = code & 1;
code >>= 1;
code = (sign) ? (pred - code) : (pred + code);
dprintf(s->avctx,"H.263+ UMV Motion = %d\n", code);
return code;
}
/**
* read the next MVs for OBMC. yes this is a ugly hack, feel free to send a patch :)
*/
static void preview_obmc(MpegEncContext *s){
GetBitContext gb= s->gb;
int cbpc, i, pred_x, pred_y, mx, my;
int16_t *mot_val;
const int xy= s->mb_x + 1 + s->mb_y * s->mb_stride;
const int stride= s->b8_stride*2;
for(i=0; i<4; i++)
s->block_index[i]+= 2;
for(i=4; i<6; i++)
s->block_index[i]+= 1;
s->mb_x++;
assert(s->pict_type == FF_P_TYPE);
do{
if (get_bits1(&s->gb)) {
/* skip mb */
mot_val = s->current_picture.motion_val[0][ s->block_index[0] ];
mot_val[0 ]= mot_val[2 ]=
mot_val[0+stride]= mot_val[2+stride]= 0;
mot_val[1 ]= mot_val[3 ]=
mot_val[1+stride]= mot_val[3+stride]= 0;
s->current_picture.mb_type[xy]= MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_L0;
goto end;
}
cbpc = get_vlc2(&s->gb, ff_h263_inter_MCBPC_vlc.table, INTER_MCBPC_VLC_BITS, 2);
}while(cbpc == 20);
if(cbpc & 4){
s->current_picture.mb_type[xy]= MB_TYPE_INTRA;
}else{
get_vlc2(&s->gb, ff_h263_cbpy_vlc.table, CBPY_VLC_BITS, 1);
if (cbpc & 8) {
if(s->modified_quant){
if(get_bits1(&s->gb)) skip_bits(&s->gb, 1);
else skip_bits(&s->gb, 5);
}else
skip_bits(&s->gb, 2);
}
if ((cbpc & 16) == 0) {
s->current_picture.mb_type[xy]= MB_TYPE_16x16 | MB_TYPE_L0;
/* 16x16 motion prediction */
mot_val= h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
if (s->umvplus)
mx = h263p_decode_umotion(s, pred_x);
else
mx = h263_decode_motion(s, pred_x, 1);
if (s->umvplus)
my = h263p_decode_umotion(s, pred_y);
else
my = h263_decode_motion(s, pred_y, 1);
mot_val[0 ]= mot_val[2 ]=
mot_val[0+stride]= mot_val[2+stride]= mx;
mot_val[1 ]= mot_val[3 ]=
mot_val[1+stride]= mot_val[3+stride]= my;
} else {
s->current_picture.mb_type[xy]= MB_TYPE_8x8 | MB_TYPE_L0;
for(i=0;i<4;i++) {
mot_val = h263_pred_motion(s, i, 0, &pred_x, &pred_y);
if (s->umvplus)
mx = h263p_decode_umotion(s, pred_x);
else
mx = h263_decode_motion(s, pred_x, 1);
if (s->umvplus)
my = h263p_decode_umotion(s, pred_y);
else
my = h263_decode_motion(s, pred_y, 1);
if (s->umvplus && (mx - pred_x) == 1 && (my - pred_y) == 1)
skip_bits1(&s->gb); /* Bit stuffing to prevent PSC */
mot_val[0] = mx;
mot_val[1] = my;
}
}
}
end:
for(i=0; i<4; i++)
s->block_index[i]-= 2;
for(i=4; i<6; i++)
s->block_index[i]-= 1;
s->mb_x--;
s->gb= gb;
}
static void h263_decode_dquant(MpegEncContext *s){
static const int8_t quant_tab[4] = { -1, -2, 1, 2 };
if(s->modified_quant){
if(get_bits1(&s->gb))
s->qscale= modified_quant_tab[get_bits1(&s->gb)][ s->qscale ];
else
s->qscale= get_bits(&s->gb, 5);
}else
s->qscale += quant_tab[get_bits(&s->gb, 2)];
ff_set_qscale(s, s->qscale);
}
static int h263_decode_block(MpegEncContext * s, DCTELEM * block,
int n, int coded)
{
int code, level, i, j, last, run;
RLTable *rl = &ff_h263_rl_inter;
const uint8_t *scan_table;
GetBitContext gb= s->gb;
scan_table = s->intra_scantable.permutated;
if (s->h263_aic && s->mb_intra) {
rl = &rl_intra_aic;
i = 0;
if (s->ac_pred) {
if (s->h263_aic_dir)
scan_table = s->intra_v_scantable.permutated; /* left */
else
scan_table = s->intra_h_scantable.permutated; /* top */
}
} else if (s->mb_intra) {
/* DC coef */
if(s->codec_id == CODEC_ID_RV10){
#if CONFIG_RV10_DECODER
if (s->rv10_version == 3 && s->pict_type == FF_I_TYPE) {
int component, diff;
component = (n <= 3 ? 0 : n - 4 + 1);
level = s->last_dc[component];
if (s->rv10_first_dc_coded[component]) {
diff = rv_decode_dc(s, n);
if (diff == 0xffff)
return -1;
level += diff;
level = level & 0xff; /* handle wrap round */
s->last_dc[component] = level;
} else {
s->rv10_first_dc_coded[component] = 1;
}
} else {
level = get_bits(&s->gb, 8);
if (level == 255)
level = 128;
}
#endif
}else{
level = get_bits(&s->gb, 8);
if((level&0x7F) == 0){
av_log(s->avctx, AV_LOG_ERROR, "illegal dc %d at %d %d\n", level, s->mb_x, s->mb_y);
if(s->error_recognition >= FF_ER_COMPLIANT)
return -1;
}
if (level == 255)
level = 128;
}
block[0] = level;
i = 1;
} else {
i = 0;
}
if (!coded) {
if (s->mb_intra && s->h263_aic)
goto not_coded;
s->block_last_index[n] = i - 1;
return 0;
}
retry:
for(;;) {
code = get_vlc2(&s->gb, rl->vlc.table, TEX_VLC_BITS, 2);
if (code < 0){
av_log(s->avctx, AV_LOG_ERROR, "illegal ac vlc code at %dx%d\n", s->mb_x, s->mb_y);
return -1;
}
if (code == rl->n) {
/* escape */
if (CONFIG_FLV_DECODER && s->h263_flv > 1) {
ff_flv2_decode_ac_esc(&s->gb, &level, &run, &last);
} else {
last = get_bits1(&s->gb);
run = get_bits(&s->gb, 6);
level = (int8_t)get_bits(&s->gb, 8);
if(level == -128){
if (s->codec_id == CODEC_ID_RV10) {
/* XXX: should patch encoder too */
level = get_sbits(&s->gb, 12);
}else{
level = get_bits(&s->gb, 5);
level |= get_sbits(&s->gb, 6)<<5;
}
}
}
} else {
run = rl->table_run[code];
level = rl->table_level[code];
last = code >= rl->last;
if (get_bits1(&s->gb))
level = -level;
}
i += run;
if (i >= 64){
if(s->alt_inter_vlc && rl == &ff_h263_rl_inter && !s->mb_intra){
//Looks like a hack but no, it's the way it is supposed to work ...
rl = &rl_intra_aic;
i = 0;
s->gb= gb;
s->dsp.clear_block(block);
goto retry;
}
av_log(s->avctx, AV_LOG_ERROR, "run overflow at %dx%d i:%d\n", s->mb_x, s->mb_y, s->mb_intra);
return -1;
}
j = scan_table[i];
block[j] = level;
if (last)
break;
i++;
}
not_coded:
if (s->mb_intra && s->h263_aic) {
h263_pred_acdc(s, block, n);
i = 63;
}
s->block_last_index[n] = i;
return 0;
}
static int h263_skip_b_part(MpegEncContext *s, int cbp)
{
DECLARE_ALIGNED(16, DCTELEM, dblock[64]);
int i, mbi;
/* we have to set s->mb_intra to zero to decode B-part of PB-frame correctly
* but real value should be restored in order to be used later (in OBMC condition)
*/
mbi = s->mb_intra;
s->mb_intra = 0;
for (i = 0; i < 6; i++) {
if (h263_decode_block(s, dblock, i, cbp&32) < 0)
return -1;
cbp+=cbp;
}
s->mb_intra = mbi;
return 0;
}
static int h263_get_modb(GetBitContext *gb, int pb_frame, int *cbpb)
{
int c, mv = 1;
if (pb_frame < 3) { // h.263 Annex G and i263 PB-frame
c = get_bits1(gb);
if (pb_frame == 2 && c)
mv = !get_bits1(gb);
} else { // h.263 Annex M improved PB-frame
mv = get_unary(gb, 0, 4) + 1;
c = mv & 1;
mv = !!(mv & 2);
}
if(c)
*cbpb = get_bits(gb, 6);
return mv;
}
int ff_h263_decode_mb(MpegEncContext *s,
DCTELEM block[6][64])
{
int cbpc, cbpy, i, cbp, pred_x, pred_y, mx, my, dquant;
int16_t *mot_val;
const int xy= s->mb_x + s->mb_y * s->mb_stride;
int cbpb = 0, pb_mv_count = 0;
assert(!s->h263_pred);
if (s->pict_type == FF_P_TYPE) {
do{
if (get_bits1(&s->gb)) {
/* skip mb */
s->mb_intra = 0;
for(i=0;i<6;i++)
s->block_last_index[i] = -1;
s->mv_dir = MV_DIR_FORWARD;
s->mv_type = MV_TYPE_16X16;
s->current_picture.mb_type[xy]= MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_L0;
s->mv[0][0][0] = 0;
s->mv[0][0][1] = 0;
s->mb_skipped = !(s->obmc | s->loop_filter);
goto end;
}
cbpc = get_vlc2(&s->gb, ff_h263_inter_MCBPC_vlc.table, INTER_MCBPC_VLC_BITS, 2);
if (cbpc < 0){
av_log(s->avctx, AV_LOG_ERROR, "cbpc damaged at %d %d\n", s->mb_x, s->mb_y);
return -1;
}
}while(cbpc == 20);
s->dsp.clear_blocks(s->block[0]);
dquant = cbpc & 8;
s->mb_intra = ((cbpc & 4) != 0);
if (s->mb_intra) goto intra;
if(s->pb_frame && get_bits1(&s->gb))
pb_mv_count = h263_get_modb(&s->gb, s->pb_frame, &cbpb);
cbpy = get_vlc2(&s->gb, ff_h263_cbpy_vlc.table, CBPY_VLC_BITS, 1);
if(s->alt_inter_vlc==0 || (cbpc & 3)!=3)
cbpy ^= 0xF;
cbp = (cbpc & 3) | (cbpy << 2);
if (dquant) {
h263_decode_dquant(s);
}
s->mv_dir = MV_DIR_FORWARD;
if ((cbpc & 16) == 0) {
s->current_picture.mb_type[xy]= MB_TYPE_16x16 | MB_TYPE_L0;
/* 16x16 motion prediction */
s->mv_type = MV_TYPE_16X16;
h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
if (s->umvplus)
mx = h263p_decode_umotion(s, pred_x);
else
mx = h263_decode_motion(s, pred_x, 1);
if (mx >= 0xffff)
return -1;
if (s->umvplus)
my = h263p_decode_umotion(s, pred_y);
else
my = h263_decode_motion(s, pred_y, 1);
if (my >= 0xffff)
return -1;
s->mv[0][0][0] = mx;
s->mv[0][0][1] = my;
if (s->umvplus && (mx - pred_x) == 1 && (my - pred_y) == 1)
skip_bits1(&s->gb); /* Bit stuffing to prevent PSC */
} else {
s->current_picture.mb_type[xy]= MB_TYPE_8x8 | MB_TYPE_L0;
s->mv_type = MV_TYPE_8X8;
for(i=0;i<4;i++) {
mot_val = h263_pred_motion(s, i, 0, &pred_x, &pred_y);
if (s->umvplus)
mx = h263p_decode_umotion(s, pred_x);
else
mx = h263_decode_motion(s, pred_x, 1);
if (mx >= 0xffff)
return -1;
if (s->umvplus)
my = h263p_decode_umotion(s, pred_y);
else
my = h263_decode_motion(s, pred_y, 1);
if (my >= 0xffff)
return -1;
s->mv[0][i][0] = mx;
s->mv[0][i][1] = my;
if (s->umvplus && (mx - pred_x) == 1 && (my - pred_y) == 1)
skip_bits1(&s->gb); /* Bit stuffing to prevent PSC */
mot_val[0] = mx;
mot_val[1] = my;
}
}
} else if(s->pict_type==FF_B_TYPE) {
int mb_type;
const int stride= s->b8_stride;
int16_t *mot_val0 = s->current_picture.motion_val[0][ 2*(s->mb_x + s->mb_y*stride) ];
int16_t *mot_val1 = s->current_picture.motion_val[1][ 2*(s->mb_x + s->mb_y*stride) ];
// const int mv_xy= s->mb_x + 1 + s->mb_y * s->mb_stride;
//FIXME ugly
mot_val0[0 ]= mot_val0[2 ]= mot_val0[0+2*stride]= mot_val0[2+2*stride]=
mot_val0[1 ]= mot_val0[3 ]= mot_val0[1+2*stride]= mot_val0[3+2*stride]=
mot_val1[0 ]= mot_val1[2 ]= mot_val1[0+2*stride]= mot_val1[2+2*stride]=
mot_val1[1 ]= mot_val1[3 ]= mot_val1[1+2*stride]= mot_val1[3+2*stride]= 0;
do{
mb_type= get_vlc2(&s->gb, h263_mbtype_b_vlc.table, H263_MBTYPE_B_VLC_BITS, 2);
if (mb_type < 0){
av_log(s->avctx, AV_LOG_ERROR, "b mb_type damaged at %d %d\n", s->mb_x, s->mb_y);
return -1;
}
mb_type= h263_mb_type_b_map[ mb_type ];
}while(!mb_type);
s->mb_intra = IS_INTRA(mb_type);
if(HAS_CBP(mb_type)){
s->dsp.clear_blocks(s->block[0]);
cbpc = get_vlc2(&s->gb, cbpc_b_vlc.table, CBPC_B_VLC_BITS, 1);
if(s->mb_intra){
dquant = IS_QUANT(mb_type);
goto intra;
}
cbpy = get_vlc2(&s->gb, ff_h263_cbpy_vlc.table, CBPY_VLC_BITS, 1);
if (cbpy < 0){
av_log(s->avctx, AV_LOG_ERROR, "b cbpy damaged at %d %d\n", s->mb_x, s->mb_y);
return -1;
}
if(s->alt_inter_vlc==0 || (cbpc & 3)!=3)
cbpy ^= 0xF;
cbp = (cbpc & 3) | (cbpy << 2);
}else
cbp=0;
assert(!s->mb_intra);
if(IS_QUANT(mb_type)){
h263_decode_dquant(s);
}
if(IS_DIRECT(mb_type)){
s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
mb_type |= ff_mpeg4_set_direct_mv(s, 0, 0);
}else{
s->mv_dir = 0;
s->mv_type= MV_TYPE_16X16;
//FIXME UMV
if(USES_LIST(mb_type, 0)){
int16_t *mot_val= h263_pred_motion(s, 0, 0, &mx, &my);
s->mv_dir = MV_DIR_FORWARD;
mx = h263_decode_motion(s, mx, 1);
my = h263_decode_motion(s, my, 1);
s->mv[0][0][0] = mx;
s->mv[0][0][1] = my;
mot_val[0 ]= mot_val[2 ]= mot_val[0+2*stride]= mot_val[2+2*stride]= mx;
mot_val[1 ]= mot_val[3 ]= mot_val[1+2*stride]= mot_val[3+2*stride]= my;
}
if(USES_LIST(mb_type, 1)){
int16_t *mot_val= h263_pred_motion(s, 0, 1, &mx, &my);
s->mv_dir |= MV_DIR_BACKWARD;
mx = h263_decode_motion(s, mx, 1);
my = h263_decode_motion(s, my, 1);
s->mv[1][0][0] = mx;
s->mv[1][0][1] = my;
mot_val[0 ]= mot_val[2 ]= mot_val[0+2*stride]= mot_val[2+2*stride]= mx;
mot_val[1 ]= mot_val[3 ]= mot_val[1+2*stride]= mot_val[3+2*stride]= my;
}
}
s->current_picture.mb_type[xy]= mb_type;
} else { /* I-Frame */
do{
cbpc = get_vlc2(&s->gb, ff_h263_intra_MCBPC_vlc.table, INTRA_MCBPC_VLC_BITS, 2);
if (cbpc < 0){
av_log(s->avctx, AV_LOG_ERROR, "I cbpc damaged at %d %d\n", s->mb_x, s->mb_y);
return -1;
}
}while(cbpc == 8);
s->dsp.clear_blocks(s->block[0]);
dquant = cbpc & 4;
s->mb_intra = 1;
intra:
s->current_picture.mb_type[xy]= MB_TYPE_INTRA;
if (s->h263_aic) {
s->ac_pred = get_bits1(&s->gb);
if(s->ac_pred){
s->current_picture.mb_type[xy]= MB_TYPE_INTRA | MB_TYPE_ACPRED;
s->h263_aic_dir = get_bits1(&s->gb);
}
}else
s->ac_pred = 0;
if(s->pb_frame && get_bits1(&s->gb))
pb_mv_count = h263_get_modb(&s->gb, s->pb_frame, &cbpb);
cbpy = get_vlc2(&s->gb, ff_h263_cbpy_vlc.table, CBPY_VLC_BITS, 1);
if(cbpy<0){
av_log(s->avctx, AV_LOG_ERROR, "I cbpy damaged at %d %d\n", s->mb_x, s->mb_y);
return -1;
}
cbp = (cbpc & 3) | (cbpy << 2);
if (dquant) {
h263_decode_dquant(s);
}
pb_mv_count += !!s->pb_frame;
}
while(pb_mv_count--){
h263_decode_motion(s, 0, 1);
h263_decode_motion(s, 0, 1);
}
/* decode each block */
for (i = 0; i < 6; i++) {
if (h263_decode_block(s, block[i], i, cbp&32) < 0)
return -1;
cbp+=cbp;
}
if(s->pb_frame && h263_skip_b_part(s, cbpb) < 0)
return -1;
if(s->obmc && !s->mb_intra){
if(s->pict_type == FF_P_TYPE && s->mb_x+1<s->mb_width && s->mb_num_left != 1)
preview_obmc(s);
}
end:
/* per-MB end of slice check */
{
int v= show_bits(&s->gb, 16);
if(get_bits_count(&s->gb) + 16 > s->gb.size_in_bits){
v>>= get_bits_count(&s->gb) + 16 - s->gb.size_in_bits;
}
if(v==0)
return SLICE_END;
}
return SLICE_OK;
}
/* most is hardcoded. should extend to handle all h263 streams */
int h263_decode_picture_header(MpegEncContext *s)
{
int format, width, height, i;
uint32_t startcode;
align_get_bits(&s->gb);
startcode= get_bits(&s->gb, 22-8);
for(i= get_bits_left(&s->gb); i>24; i-=8) {
startcode = ((startcode << 8) | get_bits(&s->gb, 8)) & 0x003FFFFF;
if(startcode == 0x20)
break;
}
if (startcode != 0x20) {
av_log(s->avctx, AV_LOG_ERROR, "Bad picture start code\n");
return -1;
}
/* temporal reference */
i = get_bits(&s->gb, 8); /* picture timestamp */
if( (s->picture_number&~0xFF)+i < s->picture_number)
i+= 256;
s->current_picture_ptr->pts=
s->picture_number= (s->picture_number&~0xFF) + i;
/* PTYPE starts here */
if (get_bits1(&s->gb) != 1) {
/* marker */
av_log(s->avctx, AV_LOG_ERROR, "Bad marker\n");
return -1;
}
if (get_bits1(&s->gb) != 0) {
av_log(s->avctx, AV_LOG_ERROR, "Bad H263 id\n");
return -1; /* h263 id */
}
skip_bits1(&s->gb); /* split screen off */
skip_bits1(&s->gb); /* camera off */
skip_bits1(&s->gb); /* freeze picture release off */
format = get_bits(&s->gb, 3);
/*
0 forbidden
1 sub-QCIF
10 QCIF
7 extended PTYPE (PLUSPTYPE)
*/
if (format != 7 && format != 6) {
s->h263_plus = 0;
/* H.263v1 */
width = h263_format[format][0];
height = h263_format[format][1];
if (!width)
return -1;
s->pict_type = FF_I_TYPE + get_bits1(&s->gb);
s->h263_long_vectors = get_bits1(&s->gb);
if (get_bits1(&s->gb) != 0) {
av_log(s->avctx, AV_LOG_ERROR, "H263 SAC not supported\n");
return -1; /* SAC: off */
}
s->obmc= get_bits1(&s->gb); /* Advanced prediction mode */
s->unrestricted_mv = s->h263_long_vectors || s->obmc;
s->pb_frame = get_bits1(&s->gb);
s->chroma_qscale= s->qscale = get_bits(&s->gb, 5);
skip_bits1(&s->gb); /* Continuous Presence Multipoint mode: off */
s->width = width;
s->height = height;
s->avctx->sample_aspect_ratio= (AVRational){12,11};
s->avctx->time_base= (AVRational){1001, 30000};
} else {
int ufep;
/* H.263v2 */
s->h263_plus = 1;
ufep = get_bits(&s->gb, 3); /* Update Full Extended PTYPE */
/* ufep other than 0 and 1 are reserved */
if (ufep == 1) {
/* OPPTYPE */
format = get_bits(&s->gb, 3);
dprintf(s->avctx, "ufep=1, format: %d\n", format);
s->custom_pcf= get_bits1(&s->gb);
s->umvplus = get_bits1(&s->gb); /* Unrestricted Motion Vector */
if (get_bits1(&s->gb) != 0) {
av_log(s->avctx, AV_LOG_ERROR, "Syntax-based Arithmetic Coding (SAC) not supported\n");
}
s->obmc= get_bits1(&s->gb); /* Advanced prediction mode */
s->h263_aic = get_bits1(&s->gb); /* Advanced Intra Coding (AIC) */
s->loop_filter= get_bits1(&s->gb);
s->unrestricted_mv = s->umvplus || s->obmc || s->loop_filter;
s->h263_slice_structured= get_bits1(&s->gb);
if (get_bits1(&s->gb) != 0) {
av_log(s->avctx, AV_LOG_ERROR, "Reference Picture Selection not supported\n");
}
if (get_bits1(&s->gb) != 0) {
av_log(s->avctx, AV_LOG_ERROR, "Independent Segment Decoding not supported\n");
}
s->alt_inter_vlc= get_bits1(&s->gb);
s->modified_quant= get_bits1(&s->gb);
if(s->modified_quant)
s->chroma_qscale_table= ff_h263_chroma_qscale_table;
skip_bits(&s->gb, 1); /* Prevent start code emulation */
skip_bits(&s->gb, 3); /* Reserved */
} else if (ufep != 0) {
av_log(s->avctx, AV_LOG_ERROR, "Bad UFEP type (%d)\n", ufep);
return -1;
}
/* MPPTYPE */
s->pict_type = get_bits(&s->gb, 3);
switch(s->pict_type){
case 0: s->pict_type= FF_I_TYPE;break;
case 1: s->pict_type= FF_P_TYPE;break;
case 2: s->pict_type= FF_P_TYPE;s->pb_frame = 3;break;
case 3: s->pict_type= FF_B_TYPE;break;
case 7: s->pict_type= FF_I_TYPE;break; //ZYGO
default:
return -1;
}
skip_bits(&s->gb, 2);
s->no_rounding = get_bits1(&s->gb);
skip_bits(&s->gb, 4);
/* Get the picture dimensions */
if (ufep) {
if (format == 6) {
/* Custom Picture Format (CPFMT) */
s->aspect_ratio_info = get_bits(&s->gb, 4);
dprintf(s->avctx, "aspect: %d\n", s->aspect_ratio_info);
/* aspect ratios:
0 - forbidden
1 - 1:1
2 - 12:11 (CIF 4:3)
3 - 10:11 (525-type 4:3)
4 - 16:11 (CIF 16:9)
5 - 40:33 (525-type 16:9)
6-14 - reserved
*/
width = (get_bits(&s->gb, 9) + 1) * 4;
skip_bits1(&s->gb);
height = get_bits(&s->gb, 9) * 4;
dprintf(s->avctx, "\nH.263+ Custom picture: %dx%d\n",width,height);
if (s->aspect_ratio_info == FF_ASPECT_EXTENDED) {
/* aspected dimensions */
s->avctx->sample_aspect_ratio.num= get_bits(&s->gb, 8);
s->avctx->sample_aspect_ratio.den= get_bits(&s->gb, 8);
}else{
s->avctx->sample_aspect_ratio= ff_h263_pixel_aspect[s->aspect_ratio_info];
}
} else {
width = h263_format[format][0];
height = h263_format[format][1];
s->avctx->sample_aspect_ratio= (AVRational){12,11};
}
if ((width == 0) || (height == 0))
return -1;
s->width = width;
s->height = height;
if(s->custom_pcf){
int gcd;
s->avctx->time_base.den= 1800000;
s->avctx->time_base.num= 1000 + get_bits1(&s->gb);
s->avctx->time_base.num*= get_bits(&s->gb, 7);
if(s->avctx->time_base.num == 0){
av_log(s, AV_LOG_ERROR, "zero framerate\n");
return -1;
}
gcd= av_gcd(s->avctx->time_base.den, s->avctx->time_base.num);
s->avctx->time_base.den /= gcd;
s->avctx->time_base.num /= gcd;
}else{
s->avctx->time_base= (AVRational){1001, 30000};
}
}
if(s->custom_pcf){
skip_bits(&s->gb, 2); //extended Temporal reference
}
if (ufep) {
if (s->umvplus) {
if(get_bits1(&s->gb)==0) /* Unlimited Unrestricted Motion Vectors Indicator (UUI) */
skip_bits1(&s->gb);
}
if(s->h263_slice_structured){
if (get_bits1(&s->gb) != 0) {
av_log(s->avctx, AV_LOG_ERROR, "rectangular slices not supported\n");
}
if (get_bits1(&s->gb) != 0) {
av_log(s->avctx, AV_LOG_ERROR, "unordered slices not supported\n");
}
}
}
s->qscale = get_bits(&s->gb, 5);
}
s->mb_width = (s->width + 15) / 16;
s->mb_height = (s->height + 15) / 16;
s->mb_num = s->mb_width * s->mb_height;
if (s->pb_frame) {
skip_bits(&s->gb, 3); /* Temporal reference for B-pictures */
if (s->custom_pcf)
skip_bits(&s->gb, 2); //extended Temporal reference
skip_bits(&s->gb, 2); /* Quantization information for B-pictures */
}
/* PEI */
while (get_bits1(&s->gb) != 0) {
skip_bits(&s->gb, 8);
}
if(s->h263_slice_structured){
if (get_bits1(&s->gb) != 1) {
av_log(s->avctx, AV_LOG_ERROR, "SEPB1 marker missing\n");
return -1;
}
ff_h263_decode_mba(s);
if (get_bits1(&s->gb) != 1) {
av_log(s->avctx, AV_LOG_ERROR, "SEPB2 marker missing\n");
return -1;
}
}
s->f_code = 1;
if(s->h263_aic){
s->y_dc_scale_table=
s->c_dc_scale_table= ff_aic_dc_scale_table;
}else{
s->y_dc_scale_table=
s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
}
ff_h263_show_pict_info(s);
if (s->pict_type == FF_I_TYPE && s->codec_tag == AV_RL32("ZYGO")){
int i,j;
for(i=0; i<85; i++) av_log(s->avctx, AV_LOG_DEBUG, "%d", get_bits1(&s->gb));
av_log(s->avctx, AV_LOG_DEBUG, "\n");
for(i=0; i<13; i++){
for(j=0; j<3; j++){
int v= get_bits(&s->gb, 8);
v |= get_sbits(&s->gb, 8)<<8;
av_log(s->avctx, AV_LOG_DEBUG, " %5d", v);
}
av_log(s->avctx, AV_LOG_DEBUG, "\n");
}
for(i=0; i<50; i++) av_log(s->avctx, AV_LOG_DEBUG, "%d", get_bits1(&s->gb));
}
return 0;
}
libavcodec/ituh263enc.c 0 → 100644
View file @ c9038784
/*
* ITU H263 bitstream encoder
* Copyright (c) 2000,2001 Fabrice Bellard
* H263+ support.
* Copyright (c) 2001 Juan J. Sierralta P
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* 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
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file libavcodec/ituh263enc.c
* h263 encoder.
*/
//#define DEBUG
#include <limits.h>
#include "dsputil.h"
#include "avcodec.h"
#include "mpegvideo.h"
#include "h263.h"
#include "mathops.h"
#include "unary.h"
#include "flv.h"
#include "mpeg4video.h"
//#undef NDEBUG
//#include <assert.h>
/**
* Table of number of bits a motion vector component needs.
*/
static uint8_t mv_penalty[MAX_FCODE+1][MAX_MV*2+1];
/**
* Minimal fcode that a motion vector component would need.
*/
static uint8_t fcode_tab[MAX_MV*2+1];
/**
* Minimal fcode that a motion vector component would need in umv.
* All entries in this table are 1.
*/
static uint8_t umv_fcode_tab[MAX_MV*2+1];
//unified encoding tables for run length encoding of coefficients
//unified in the sense that the specification specifies the encoding in several steps.
static uint8_t uni_h263_intra_aic_rl_len [64*64*2*2];
static uint8_t uni_h263_inter_rl_len [64*64*2*2];
//#define UNI_MPEG4_ENC_INDEX(last,run,level) ((last)*128 + (run)*256 + (level))
//#define UNI_MPEG4_ENC_INDEX(last,run,level) ((last)*128*64 + (run) + (level)*64)
#define UNI_MPEG4_ENC_INDEX(last,run,level) ((last)*128*64 + (run)*128 + (level))
static const uint8_t wrong_run[102] = {
1, 2, 3, 5, 4, 10, 9, 8,
11, 15, 17, 16, 23, 22, 21, 20,
19, 18, 25, 24, 27, 26, 11, 7,
6, 1, 2, 13, 2, 2, 2, 2,
6, 12, 3, 9, 1, 3, 4, 3,
7, 4, 1, 1, 5, 5, 14, 6,
1, 7, 1, 8, 1, 1, 1, 1,
10, 1, 1, 5, 9, 17, 25, 24,
29, 33, 32, 41, 2, 23, 28, 31,
3, 22, 30, 4, 27, 40, 8, 26,
6, 39, 7, 38, 16, 37, 15, 10,
11, 12, 13, 14, 1, 21, 20, 18,
19, 2, 1, 34, 35, 36
};
int h263_get_picture_format(int width, int height)
{
if (width == 128 && height == 96)
return 1;
else if (width == 176 && height == 144)
return 2;
else if (width == 352 && height == 288)
return 3;
else if (width == 704 && height == 576)
return 4;
else if (width == 1408 && height == 1152)
return 5;
else
return 7;
}
/**
* Returns the 4 bit value that specifies the given aspect ratio.
* This may be one of the standard aspect ratios or it specifies
* that the aspect will be stored explicitly later.
*/
av_const int ff_h263_aspect_to_info(AVRational aspect){
int i;
if(aspect.num==0) aspect= (AVRational){1,1};
for(i=1; i<6; i++){
if(av_cmp_q(ff_h263_pixel_aspect[i], aspect) == 0){
return i;
}
}
return FF_ASPECT_EXTENDED;
}
void h263_encode_picture_header(MpegEncContext * s, int picture_number)
{
int format, coded_frame_rate, coded_frame_rate_base, i, temp_ref;
int best_clock_code=1;
int best_divisor=60;
int best_error= INT_MAX;
if(s->h263_plus){
for(i=0; i<2; i++){
int div, error;
div= (s->avctx->time_base.num*1800000LL + 500LL*s->avctx->time_base.den) / ((1000LL+i)*s->avctx->time_base.den);
div= av_clip(div, 1, 127);
error= FFABS(s->avctx->time_base.num*1800000LL - (1000LL+i)*s->avctx->time_base.den*div);
if(error < best_error){
best_error= error;
best_divisor= div;
best_clock_code= i;
}
}
}
s->custom_pcf= best_clock_code!=1 || best_divisor!=60;
coded_frame_rate= 1800000;
coded_frame_rate_base= (1000+best_clock_code)*best_divisor;
align_put_bits(&s->pb);
/* Update the pointer to last GOB */
s->ptr_lastgob = put_bits_ptr(&s->pb);
put_bits(&s->pb, 22, 0x20); /* PSC */
temp_ref= s->picture_number * (int64_t)coded_frame_rate * s->avctx->time_base.num / //FIXME use timestamp
(coded_frame_rate_base * (int64_t)s->avctx->time_base.den);
put_sbits(&s->pb, 8, temp_ref); /* TemporalReference */
put_bits(&s->pb, 1, 1); /* marker */
put_bits(&s->pb, 1, 0); /* h263 id */
put_bits(&s->pb, 1, 0); /* split screen off */
put_bits(&s->pb, 1, 0); /* camera off */
put_bits(&s->pb, 1, 0); /* freeze picture release off */
format = h263_get_picture_format(s->width, s->height);
if (!s->h263_plus) {
/* H.263v1 */
put_bits(&s->pb, 3, format);
put_bits(&s->pb, 1, (s->pict_type == FF_P_TYPE));
/* By now UMV IS DISABLED ON H.263v1, since the restrictions
of H.263v1 UMV implies to check the predicted MV after
calculation of the current MB to see if we're on the limits */
put_bits(&s->pb, 1, 0); /* Unrestricted Motion Vector: off */
put_bits(&s->pb, 1, 0); /* SAC: off */
put_bits(&s->pb, 1, s->obmc); /* Advanced Prediction */
put_bits(&s->pb, 1, 0); /* only I/P frames, no PB frame */
put_bits(&s->pb, 5, s->qscale);
put_bits(&s->pb, 1, 0); /* Continuous Presence Multipoint mode: off */
} else {
int ufep=1;
/* H.263v2 */
/* H.263 Plus PTYPE */
put_bits(&s->pb, 3, 7);
put_bits(&s->pb,3,ufep); /* Update Full Extended PTYPE */
if (format == 7)
put_bits(&s->pb,3,6); /* Custom Source Format */
else
put_bits(&s->pb, 3, format);
put_bits(&s->pb,1, s->custom_pcf);
put_bits(&s->pb,1, s->umvplus); /* Unrestricted Motion Vector */
put_bits(&s->pb,1,0); /* SAC: off */
put_bits(&s->pb,1,s->obmc); /* Advanced Prediction Mode */
put_bits(&s->pb,1,s->h263_aic); /* Advanced Intra Coding */
put_bits(&s->pb,1,s->loop_filter); /* Deblocking Filter */
put_bits(&s->pb,1,s->h263_slice_structured); /* Slice Structured */
put_bits(&s->pb,1,0); /* Reference Picture Selection: off */
put_bits(&s->pb,1,0); /* Independent Segment Decoding: off */
put_bits(&s->pb,1,s->alt_inter_vlc); /* Alternative Inter VLC */
put_bits(&s->pb,1,s->modified_quant); /* Modified Quantization: */
put_bits(&s->pb,1,1); /* "1" to prevent start code emulation */
put_bits(&s->pb,3,0); /* Reserved */
put_bits(&s->pb, 3, s->pict_type == FF_P_TYPE);
put_bits(&s->pb,1,0); /* Reference Picture Resampling: off */
put_bits(&s->pb,1,0); /* Reduced-Resolution Update: off */
put_bits(&s->pb,1,s->no_rounding); /* Rounding Type */
put_bits(&s->pb,2,0); /* Reserved */
put_bits(&s->pb,1,1); /* "1" to prevent start code emulation */
/* This should be here if PLUSPTYPE */
put_bits(&s->pb, 1, 0); /* Continuous Presence Multipoint mode: off */
if (format == 7) {
/* Custom Picture Format (CPFMT) */
s->aspect_ratio_info= ff_h263_aspect_to_info(s->avctx->sample_aspect_ratio);
put_bits(&s->pb,4,s->aspect_ratio_info);
put_bits(&s->pb,9,(s->width >> 2) - 1);
put_bits(&s->pb,1,1); /* "1" to prevent start code emulation */
put_bits(&s->pb,9,(s->height >> 2));
if (s->aspect_ratio_info == FF_ASPECT_EXTENDED){
put_bits(&s->pb, 8, s->avctx->sample_aspect_ratio.num);
put_bits(&s->pb, 8, s->avctx->sample_aspect_ratio.den);
}
}
if(s->custom_pcf){
if(ufep){
put_bits(&s->pb, 1, best_clock_code);
put_bits(&s->pb, 7, best_divisor);
}
put_sbits(&s->pb, 2, temp_ref>>8);
}
/* Unlimited Unrestricted Motion Vectors Indicator (UUI) */
if (s->umvplus)
// put_bits(&s->pb,1,1); /* Limited according tables of Annex D */
//FIXME check actual requested range
put_bits(&s->pb,2,1); /* unlimited */
if(s->h263_slice_structured)
put_bits(&s->pb,2,0); /* no weird submodes */
put_bits(&s->pb, 5, s->qscale);
}
put_bits(&s->pb, 1, 0); /* no PEI */
if(s->h263_slice_structured){
put_bits(&s->pb, 1, 1);
assert(s->mb_x == 0 && s->mb_y == 0);
ff_h263_encode_mba(s);
put_bits(&s->pb, 1, 1);
}
if(s->h263_aic){
s->y_dc_scale_table=
s->c_dc_scale_table= ff_aic_dc_scale_table;
}else{
s->y_dc_scale_table=
s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
}
}
/**
* Encodes a group of blocks header.
*/
void h263_encode_gob_header(MpegEncContext * s, int mb_line)
{
put_bits(&s->pb, 17, 1); /* GBSC */
if(s->h263_slice_structured){
put_bits(&s->pb, 1, 1);
ff_h263_encode_mba(s);
if(s->mb_num > 1583)
put_bits(&s->pb, 1, 1);
put_bits(&s->pb, 5, s->qscale); /* GQUANT */
put_bits(&s->pb, 1, 1);
put_bits(&s->pb, 2, s->pict_type == FF_I_TYPE); /* GFID */
}else{
int gob_number= mb_line / s->gob_index;
put_bits(&s->pb, 5, gob_number); /* GN */
put_bits(&s->pb, 2, s->pict_type == FF_I_TYPE); /* GFID */
put_bits(&s->pb, 5, s->qscale); /* GQUANT */
}
}
/**
* modify qscale so that encoding is acually possible in h263 (limit difference to -2..2)
*/
void ff_clean_h263_qscales(MpegEncContext *s){
int i;
int8_t * const qscale_table= s->current_picture.qscale_table;
ff_init_qscale_tab(s);
for(i=1; i<s->mb_num; i++){
if(qscale_table[ s->mb_index2xy[i] ] - qscale_table[ s->mb_index2xy[i-1] ] >2)
qscale_table[ s->mb_index2xy[i] ]= qscale_table[ s->mb_index2xy[i-1] ]+2;
}
for(i=s->mb_num-2; i>=0; i--){
if(qscale_table[ s->mb_index2xy[i] ] - qscale_table[ s->mb_index2xy[i+1] ] >2)
qscale_table[ s->mb_index2xy[i] ]= qscale_table[ s->mb_index2xy[i+1] ]+2;
}
if(s->codec_id != CODEC_ID_H263P){
for(i=1; i<s->mb_num; i++){
int mb_xy= s->mb_index2xy[i];
if(qscale_table[mb_xy] != qscale_table[s->mb_index2xy[i-1]] && (s->mb_type[mb_xy]&CANDIDATE_MB_TYPE_INTER4V)){
s->mb_type[mb_xy]|= CANDIDATE_MB_TYPE_INTER;
}
}
}
}
static const int dquant_code[5]= {1,0,9,2,3};
/**
* encodes a 8x8 block.
* @param block the 8x8 block
* @param n block index (0-3 are luma, 4-5 are chroma)
*/
static void h263_encode_block(MpegEncContext * s, DCTELEM * block, int n)
{
int level, run, last, i, j, last_index, last_non_zero, sign, slevel, code;
RLTable *rl;
rl = &ff_h263_rl_inter;
if (s->mb_intra && !s->h263_aic) {
/* DC coef */
level = block[0];
/* 255 cannot be represented, so we clamp */
if (level > 254) {
level = 254;
block[0] = 254;
}
/* 0 cannot be represented also */
else if (level < 1) {
level = 1;
block[0] = 1;
}
if (level == 128) //FIXME check rv10
put_bits(&s->pb, 8, 0xff);
else
put_bits(&s->pb, 8, level);
i = 1;
} else {
i = 0;
if (s->h263_aic && s->mb_intra)
rl = &rl_intra_aic;
if(s->alt_inter_vlc && !s->mb_intra){
int aic_vlc_bits=0;
int inter_vlc_bits=0;
int wrong_pos=-1;
int aic_code;
last_index = s->block_last_index[n];
last_non_zero = i - 1;
for (; i <= last_index; i++) {
j = s->intra_scantable.permutated[i];
level = block[j];
if (level) {
run = i - last_non_zero - 1;
last = (i == last_index);
if(level<0) level= -level;
code = get_rl_index(rl, last, run, level);
aic_code = get_rl_index(&rl_intra_aic, last, run, level);
inter_vlc_bits += rl->table_vlc[code][1]+1;
aic_vlc_bits += rl_intra_aic.table_vlc[aic_code][1]+1;
if (code == rl->n) {
inter_vlc_bits += 1+6+8-1;
}
if (aic_code == rl_intra_aic.n) {
aic_vlc_bits += 1+6+8-1;
wrong_pos += run + 1;
}else
wrong_pos += wrong_run[aic_code];
last_non_zero = i;
}
}
i = 0;
if(aic_vlc_bits < inter_vlc_bits && wrong_pos > 63)
rl = &rl_intra_aic;
}
}
/* AC coefs */
last_index = s->block_last_index[n];
last_non_zero = i - 1;
for (; i <= last_index; i++) {
j = s->intra_scantable.permutated[i];
level = block[j];
if (level) {
run = i - last_non_zero - 1;
last = (i == last_index);
sign = 0;
slevel = level;
if (level < 0) {
sign = 1;
level = -level;
}
code = get_rl_index(rl, last, run, level);
put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
if (code == rl->n) {
if(!CONFIG_FLV_ENCODER || s->h263_flv <= 1){
put_bits(&s->pb, 1, last);
put_bits(&s->pb, 6, run);
assert(slevel != 0);
if(level < 128)
put_sbits(&s->pb, 8, slevel);
else{
put_bits(&s->pb, 8, 128);
put_sbits(&s->pb, 5, slevel);
put_sbits(&s->pb, 6, slevel>>5);
}
}else{
ff_flv2_encode_ac_esc(&s->pb, slevel, level, run, last);
}
} else {
put_bits(&s->pb, 1, sign);
}
last_non_zero = i;
}
}
}
/* Encode MV differences on H.263+ with Unrestricted MV mode */
static void h263p_encode_umotion(MpegEncContext * s, int val)
{
short sval = 0;
short i = 0;
short n_bits = 0;
short temp_val;
int code = 0;
int tcode;
if ( val == 0)
put_bits(&s->pb, 1, 1);
else if (val == 1)
put_bits(&s->pb, 3, 0);
else if (val == -1)
put_bits(&s->pb, 3, 2);
else {
sval = ((val < 0) ? (short)(-val):(short)val);
temp_val = sval;
while (temp_val != 0) {
temp_val = temp_val >> 1;
n_bits++;
}
i = n_bits - 1;
while (i > 0) {
tcode = (sval & (1 << (i-1))) >> (i-1);
tcode = (tcode << 1) | 1;
code = (code << 2) | tcode;
i--;
}
code = ((code << 1) | (val < 0)) << 1;
put_bits(&s->pb, (2*n_bits)+1, code);
}
}
void h263_encode_mb(MpegEncContext * s,
DCTELEM block[6][64],
int motion_x, int motion_y)
{
int cbpc, cbpy, i, cbp, pred_x, pred_y;
int16_t pred_dc;
int16_t rec_intradc[6];
int16_t *dc_ptr[6];
const int interleaved_stats= (s->flags&CODEC_FLAG_PASS1);
if (!s->mb_intra) {
/* compute cbp */
cbp= get_p_cbp(s, block, motion_x, motion_y);
if ((cbp | motion_x | motion_y | s->dquant | (s->mv_type - MV_TYPE_16X16)) == 0) {
/* skip macroblock */
put_bits(&s->pb, 1, 1);
if(interleaved_stats){
s->misc_bits++;
s->last_bits++;
}
s->skip_count++;
return;
}
put_bits(&s->pb, 1, 0); /* mb coded */
cbpc = cbp & 3;
cbpy = cbp >> 2;
if(s->alt_inter_vlc==0 || cbpc!=3)
cbpy ^= 0xF;
if(s->dquant) cbpc+= 8;
if(s->mv_type==MV_TYPE_16X16){
put_bits(&s->pb,
ff_h263_inter_MCBPC_bits[cbpc],
ff_h263_inter_MCBPC_code[cbpc]);
put_bits(&s->pb, ff_h263_cbpy_tab[cbpy][1], ff_h263_cbpy_tab[cbpy][0]);
if(s->dquant)
put_bits(&s->pb, 2, dquant_code[s->dquant+2]);
if(interleaved_stats){
s->misc_bits+= get_bits_diff(s);
}
/* motion vectors: 16x16 mode */
h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
if (!s->umvplus) {
ff_h263_encode_motion_vector(s, motion_x - pred_x,
motion_y - pred_y, 1);
}
else {
h263p_encode_umotion(s, motion_x - pred_x);
h263p_encode_umotion(s, motion_y - pred_y);
if (((motion_x - pred_x) == 1) && ((motion_y - pred_y) == 1))
/* To prevent Start Code emulation */
put_bits(&s->pb,1,1);
}
}else{
put_bits(&s->pb,
ff_h263_inter_MCBPC_bits[cbpc+16],
ff_h263_inter_MCBPC_code[cbpc+16]);
put_bits(&s->pb, ff_h263_cbpy_tab[cbpy][1], ff_h263_cbpy_tab[cbpy][0]);
if(s->dquant)
put_bits(&s->pb, 2, dquant_code[s->dquant+2]);
if(interleaved_stats){
s->misc_bits+= get_bits_diff(s);
}
for(i=0; i<4; i++){
/* motion vectors: 8x8 mode*/
h263_pred_motion(s, i, 0, &pred_x, &pred_y);
motion_x= s->current_picture.motion_val[0][ s->block_index[i] ][0];
motion_y= s->current_picture.motion_val[0][ s->block_index[i] ][1];
if (!s->umvplus) {
ff_h263_encode_motion_vector(s, motion_x - pred_x,
motion_y - pred_y, 1);
}
else {
h263p_encode_umotion(s, motion_x - pred_x);
h263p_encode_umotion(s, motion_y - pred_y);
if (((motion_x - pred_x) == 1) && ((motion_y - pred_y) == 1))
/* To prevent Start Code emulation */
put_bits(&s->pb,1,1);
}
}
}
if(interleaved_stats){
s->mv_bits+= get_bits_diff(s);
}
} else {
assert(s->mb_intra);
cbp = 0;
if (s->h263_aic) {
/* Predict DC */
for(i=0; i<6; i++) {
int16_t level = block[i][0];
int scale;
if(i<4) scale= s->y_dc_scale;
else scale= s->c_dc_scale;
pred_dc = h263_pred_dc(s, i, &dc_ptr[i]);
level -= pred_dc;
/* Quant */
if (level >= 0)
level = (level + (scale>>1))/scale;
else
level = (level - (scale>>1))/scale;
/* AIC can change CBP */
if (level == 0 && s->block_last_index[i] == 0)
s->block_last_index[i] = -1;
if(!s->modified_quant){
if (level < -127)
level = -127;
else if (level > 127)
level = 127;
}
block[i][0] = level;
/* Reconstruction */
rec_intradc[i] = scale*level + pred_dc;
/* Oddify */
rec_intradc[i] |= 1;
//if ((rec_intradc[i] % 2) == 0)
// rec_intradc[i]++;
/* Clipping */
if (rec_intradc[i] < 0)
rec_intradc[i] = 0;
else if (rec_intradc[i] > 2047)
rec_intradc[i] = 2047;
/* Update AC/DC tables */
*dc_ptr[i] = rec_intradc[i];
if (s->block_last_index[i] >= 0)
cbp |= 1 << (5 - i);
}
}else{
for(i=0; i<6; i++) {
/* compute cbp */
if (s->block_last_index[i] >= 1)
cbp |= 1 << (5 - i);
}
}
cbpc = cbp & 3;
if (s->pict_type == FF_I_TYPE) {
if(s->dquant) cbpc+=4;
put_bits(&s->pb,
ff_h263_intra_MCBPC_bits[cbpc],
ff_h263_intra_MCBPC_code[cbpc]);
} else {
if(s->dquant) cbpc+=8;
put_bits(&s->pb, 1, 0); /* mb coded */
put_bits(&s->pb,
ff_h263_inter_MCBPC_bits[cbpc + 4],
ff_h263_inter_MCBPC_code[cbpc + 4]);
}
if (s->h263_aic) {
/* XXX: currently, we do not try to use ac prediction */
put_bits(&s->pb, 1, 0); /* no AC prediction */
}
cbpy = cbp >> 2;
put_bits(&s->pb, ff_h263_cbpy_tab[cbpy][1], ff_h263_cbpy_tab[cbpy][0]);
if(s->dquant)
put_bits(&s->pb, 2, dquant_code[s->dquant+2]);
if(interleaved_stats){
s->misc_bits+= get_bits_diff(s);
}
}
for(i=0; i<6; i++) {
/* encode each block */
h263_encode_block(s, block[i], i);
/* Update INTRADC for decoding */
if (s->h263_aic && s->mb_intra) {
block[i][0] = rec_intradc[i];
}
}
if(interleaved_stats){
if (!s->mb_intra) {
s->p_tex_bits+= get_bits_diff(s);
s->f_count++;
}else{
s->i_tex_bits+= get_bits_diff(s);
s->i_count++;
}
}
}
void ff_h263_encode_motion(MpegEncContext * s, int val, int f_code)
{
int range, l, bit_size, sign, code, bits;
if (val == 0) {
/* zero vector */
code = 0;
put_bits(&s->pb, mvtab[code][1], mvtab[code][0]);
} else {
bit_size = f_code - 1;
range = 1 << bit_size;
/* modulo encoding */
l= INT_BIT - 6 - bit_size;
val = (val<<l)>>l;
sign = val>>31;
val= (val^sign)-sign;
sign&=1;
val--;
code = (val >> bit_size) + 1;
bits = val & (range - 1);
put_bits(&s->pb, mvtab[code][1] + 1, (mvtab[code][0] << 1) | sign);
if (bit_size > 0) {
put_bits(&s->pb, bit_size, bits);
}
}
}
static void init_mv_penalty_and_fcode(MpegEncContext *s)
{
int f_code;
int mv;
for(f_code=1; f_code<=MAX_FCODE; f_code++){
for(mv=-MAX_MV; mv<=MAX_MV; mv++){
int len;
if(mv==0) len= mvtab[0][1];
else{
int val, bit_size, code;
bit_size = f_code - 1;
val=mv;
if (val < 0)
val = -val;
val--;
code = (val >> bit_size) + 1;
if(code<33){
len= mvtab[code][1] + 1 + bit_size;
}else{
len= mvtab[32][1] + av_log2(code>>5) + 2 + bit_size;
}
}
mv_penalty[f_code][mv+MAX_MV]= len;
}
}
for(f_code=MAX_FCODE; f_code>0; f_code--){
for(mv=-(16<<f_code); mv<(16<<f_code); mv++){
fcode_tab[mv+MAX_MV]= f_code;
}
}
for(mv=0; mv<MAX_MV*2+1; mv++){
umv_fcode_tab[mv]= 1;
}
}
static void init_uni_h263_rl_tab(RLTable *rl, uint32_t *bits_tab, uint8_t *len_tab){
int slevel, run, last;
assert(MAX_LEVEL >= 64);
assert(MAX_RUN >= 63);
for(slevel=-64; slevel<64; slevel++){
if(slevel==0) continue;
for(run=0; run<64; run++){
for(last=0; last<=1; last++){
const int index= UNI_MPEG4_ENC_INDEX(last, run, slevel+64);
int level= slevel < 0 ? -slevel : slevel;
int sign= slevel < 0 ? 1 : 0;
int bits, len, code;
len_tab[index]= 100;
/* ESC0 */
code= get_rl_index(rl, last, run, level);
bits= rl->table_vlc[code][0];
len= rl->table_vlc[code][1];
bits=bits*2+sign; len++;
if(code!=rl->n && len < len_tab[index]){
if(bits_tab) bits_tab[index]= bits;
len_tab [index]= len;
}
/* ESC */
bits= rl->table_vlc[rl->n][0];
len = rl->table_vlc[rl->n][1];
bits=bits*2+last; len++;
bits=bits*64+run; len+=6;
bits=bits*256+(level&0xff); len+=8;
if(len < len_tab[index]){
if(bits_tab) bits_tab[index]= bits;
len_tab [index]= len;
}
}
}
}
}
void h263_encode_init(MpegEncContext *s)
{
static int done = 0;
if (!done) {
done = 1;
init_rl(&ff_h263_rl_inter, ff_h263_static_rl_table_store[0]);
init_rl(&rl_intra_aic, ff_h263_static_rl_table_store[1]);
init_uni_h263_rl_tab(&rl_intra_aic, NULL, uni_h263_intra_aic_rl_len);
init_uni_h263_rl_tab(&ff_h263_rl_inter , NULL, uni_h263_inter_rl_len);
init_mv_penalty_and_fcode(s);
}
s->me.mv_penalty= mv_penalty; //FIXME exact table for msmpeg4 & h263p
s->intra_ac_vlc_length =s->inter_ac_vlc_length = uni_h263_inter_rl_len;
s->intra_ac_vlc_last_length=s->inter_ac_vlc_last_length= uni_h263_inter_rl_len + 128*64;
if(s->h263_aic){
s->intra_ac_vlc_length = uni_h263_intra_aic_rl_len;
s->intra_ac_vlc_last_length= uni_h263_intra_aic_rl_len + 128*64;
}
s->ac_esc_length= 7+1+6+8;
// use fcodes >1 only for mpeg4 & h263 & h263p FIXME
switch(s->codec_id){
case CODEC_ID_MPEG4:
s->fcode_tab= fcode_tab;
break;
case CODEC_ID_H263P:
if(s->umvplus)
s->fcode_tab= umv_fcode_tab;
if(s->modified_quant){
s->min_qcoeff= -2047;
s->max_qcoeff= 2047;
}else{
s->min_qcoeff= -127;
s->max_qcoeff= 127;
}
break;
//Note for mpeg4 & h263 the dc-scale table will be set per frame as needed later
case CODEC_ID_FLV1:
if (s->h263_flv > 1) {
s->min_qcoeff= -1023;
s->max_qcoeff= 1023;
} else {
s->min_qcoeff= -127;
s->max_qcoeff= 127;
}
s->y_dc_scale_table=
s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
break;
default: //nothing needed - default table already set in mpegvideo.c
s->min_qcoeff= -127;
s->max_qcoeff= 127;
s->y_dc_scale_table=
s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
}
}
void ff_h263_encode_mba(MpegEncContext *s)
{
int i, mb_pos;
for(i=0; i<6; i++){
if(s->mb_num-1 <= ff_mba_max[i]) break;
}
mb_pos= s->mb_x + s->mb_width*s->mb_y;
put_bits(&s->pb, ff_mba_length[i], mb_pos);
}
libavcodec/mpegvideo.h
View file @ c9038784
......@@ -797,53 +797,6 @@ void ff_h261_encode_init(MpegEncContext *s);
int ff_h261_get_picture_format(int width, int height);
/* h263.c, h263dec.c */
int ff_h263_decode_init(AVCodecContext *avctx);
int ff_h263_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
AVPacket *avpkt);
int ff_h263_decode_end(AVCodecContext *avctx);
void h263_encode_mb(MpegEncContext *s,
DCTELEM block[6][64],
int motion_x, int motion_y);
void h263_encode_picture_header(MpegEncContext *s, int picture_number);
void h263_encode_gob_header(MpegEncContext * s, int mb_line);
int16_t *h263_pred_motion(MpegEncContext * s, int block, int dir,
int *px, int *py);
void h263_encode_init(MpegEncContext *s);
void h263_decode_init_vlc(MpegEncContext *s);
int h263_decode_picture_header(MpegEncContext *s);
int ff_h263_decode_gob_header(MpegEncContext *s);
void ff_h263_update_motion_val(MpegEncContext * s);
void ff_h263_loop_filter(MpegEncContext * s);
void ff_set_qscale(MpegEncContext * s, int qscale);
int ff_h263_decode_mba(MpegEncContext *s);
void ff_h263_encode_mba(MpegEncContext *s);
/**
* Prints picture info if FF_DEBUG_PICT_INFO is set.
*/
void ff_h263_show_pict_info(MpegEncContext *s);
int ff_intel_h263_decode_picture_header(MpegEncContext *s);
int ff_h263_decode_mb(MpegEncContext *s,
DCTELEM block[6][64]);
/**
* Returns the value of the 3bit "source format" syntax element.
* that represents some standard picture dimensions or indicates that
* width&height are explicitly stored later.
*/
int av_const h263_get_picture_format(int width, int height);
void ff_clean_h263_qscales(MpegEncContext *s);
int ff_h263_resync(MpegEncContext *s);
const uint8_t *ff_h263_find_resync_marker(const uint8_t *p, const uint8_t *end);
int ff_h263_get_gob_height(MpegEncContext *s);
void ff_h263_encode_motion(MpegEncContext * s, int val, int f_code);
void ff_init_qscale_tab(MpegEncContext *s);
/* rv10.c */
void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
int rv_decode_dc(MpegEncContext *s, int n);
......
libavcodec/rv10.c
View file @ c9038784
......@@ -28,6 +28,7 @@
#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
#include "h263.h"
//#define DEBUG
......
libavcodec/svq1enc.c
View file @ c9038784
......@@ -30,6 +30,7 @@
#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
#include "h263.h"
#include "svq1.h"
#include "svq1enc_cb.h"
......
libavcodec/wmv2dec.c
View file @ c9038784
......@@ -21,6 +21,7 @@
#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
#include "h263.h"
#include "mathops.h"
#include "msmpeg4.h"
#include "msmpeg4data.h"
......
libavcodec/wmv2enc.c
View file @ c9038784
......@@ -23,6 +23,7 @@
#include "mpegvideo.h"
#include "msmpeg4.h"
#include "msmpeg4data.h"
#include "h263.h"
#include "wmv2.h"
......
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