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FFmpeg/libavcodec/h264_cavlc.c
Michael Niedermayer 59eb12faff Merge remote branch 'qatar/master' 
* qatar/master: (30 commits)
  AVOptions: make default_val a union, as proposed in AVOption2.
  arm/h264pred: add missing argument type.
  h264dsp_mmx: place bracket outside #if/#endif block.
  lavf/utils: fix ff_interleave_compare_dts corner case.
  fate: add 10-bit H264 tests.
  h264: do not print "too many references" warning for intra-only.
  Enable decoding of high bit depth h264.
  Adds 8-, 9- and 10-bit versions of some of the functions used by the h264 decoder.
  Add support for higher QP values in h264.
  Add the notion of pixel size in h264 related functions.
  Make the h264 loop filter bit depth aware.
  Template dsputil_template.c with respect to pixel size, etc.
  Template h264idct_template.c with respect to pixel size, etc.
  Preparatory patch for high bit depth h264 decoding support.
  Move some functions in dsputil.c into a new file dsputil_template.c.
  Move the functions in h264idct into a new file h264idct_template.c.
  Move the functions in h264pred.c into a new file h264pred_template.c.
  Preparatory patch for high bit depth h264 decoding support.
  Add pixel formats for 9- and 10-bit yuv420p.
  Choose h264 chroma dc dequant function dynamically.
  ...

Conflicts:
	doc/APIchanges
	ffmpeg.c
	ffplay.c
	libavcodec/alpha/dsputil_alpha.c
	libavcodec/arm/dsputil_init_arm.c
	libavcodec/arm/dsputil_init_armv6.c
	libavcodec/arm/dsputil_init_neon.c
	libavcodec/arm/dsputil_iwmmxt.c
	libavcodec/arm/h264pred_init_arm.c
	libavcodec/bfin/dsputil_bfin.c
	libavcodec/dsputil.c
	libavcodec/h264.c
	libavcodec/h264.h
	libavcodec/h264_cabac.c
	libavcodec/h264_cavlc.c
	libavcodec/h264_loopfilter.c
	libavcodec/h264_ps.c
	libavcodec/h264_refs.c
	libavcodec/h264dsp.c
	libavcodec/h264idct.c
	libavcodec/h264pred.c
	libavcodec/mlib/dsputil_mlib.c
	libavcodec/options.c
	libavcodec/ppc/dsputil_altivec.c
	libavcodec/ppc/dsputil_ppc.c
	libavcodec/ppc/h264_altivec.c
	libavcodec/ps2/dsputil_mmi.c
	libavcodec/sh4/dsputil_align.c
	libavcodec/sh4/dsputil_sh4.c
	libavcodec/sparc/dsputil_vis.c
	libavcodec/utils.c
	libavcodec/version.h
	libavcodec/x86/dsputil_mmx.c
	libavformat/options.c
	libavformat/utils.c
	libavutil/pixfmt.h
	libswscale/swscale.c
	libswscale/swscale_internal.h
	libswscale/swscale_template.c
	tests/ref/seek/lavf_avi

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2011-05-11 05:47:02 +02:00

1041 lines
38 KiB
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/*
* H.26L/H.264/AVC/JVT/14496-10/... cavlc bitstream decoding
* Copyright (c) 2003 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
* H.264 / AVC / MPEG4 part10 cavlc bitstream decoding.
* @author Michael Niedermayer <michaelni@gmx.at>
*/
#define CABAC 0
#include "internal.h"
#include "avcodec.h"
#include "mpegvideo.h"
#include "h264.h"
#include "h264data.h" // FIXME FIXME FIXME
#include "h264_mvpred.h"
#include "golomb.h"
//#undef NDEBUG
#include <assert.h>
static const uint8_t golomb_to_inter_cbp_gray[16]={
0, 1, 2, 4, 8, 3, 5,10,12,15, 7,11,13,14, 6, 9,
};
static const uint8_t golomb_to_intra4x4_cbp_gray[16]={
15, 0, 7,11,13,14, 3, 5,10,12, 1, 2, 4, 8, 6, 9,
};
static const uint8_t chroma_dc_coeff_token_len[4*5]={
2, 0, 0, 0,
6, 1, 0, 0,
6, 6, 3, 0,
6, 7, 7, 6,
6, 8, 8, 7,
};
static const uint8_t chroma_dc_coeff_token_bits[4*5]={
1, 0, 0, 0,
7, 1, 0, 0,
4, 6, 1, 0,
3, 3, 2, 5,
2, 3, 2, 0,
};
static const uint8_t coeff_token_len[4][4*17]={
{
1, 0, 0, 0,
6, 2, 0, 0, 8, 6, 3, 0, 9, 8, 7, 5, 10, 9, 8, 6,
11,10, 9, 7, 13,11,10, 8, 13,13,11, 9, 13,13,13,10,
14,14,13,11, 14,14,14,13, 15,15,14,14, 15,15,15,14,
16,15,15,15, 16,16,16,15, 16,16,16,16, 16,16,16,16,
},
{
2, 0, 0, 0,
6, 2, 0, 0, 6, 5, 3, 0, 7, 6, 6, 4, 8, 6, 6, 4,
8, 7, 7, 5, 9, 8, 8, 6, 11, 9, 9, 6, 11,11,11, 7,
12,11,11, 9, 12,12,12,11, 12,12,12,11, 13,13,13,12,
13,13,13,13, 13,14,13,13, 14,14,14,13, 14,14,14,14,
},
{
4, 0, 0, 0,
6, 4, 0, 0, 6, 5, 4, 0, 6, 5, 5, 4, 7, 5, 5, 4,
7, 5, 5, 4, 7, 6, 6, 4, 7, 6, 6, 4, 8, 7, 7, 5,
8, 8, 7, 6, 9, 8, 8, 7, 9, 9, 8, 8, 9, 9, 9, 8,
10, 9, 9, 9, 10,10,10,10, 10,10,10,10, 10,10,10,10,
},
{
6, 0, 0, 0,
6, 6, 0, 0, 6, 6, 6, 0, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
}
};
static const uint8_t coeff_token_bits[4][4*17]={
{
1, 0, 0, 0,
5, 1, 0, 0, 7, 4, 1, 0, 7, 6, 5, 3, 7, 6, 5, 3,
7, 6, 5, 4, 15, 6, 5, 4, 11,14, 5, 4, 8,10,13, 4,
15,14, 9, 4, 11,10,13,12, 15,14, 9,12, 11,10,13, 8,
15, 1, 9,12, 11,14,13, 8, 7,10, 9,12, 4, 6, 5, 8,
},
{
3, 0, 0, 0,
11, 2, 0, 0, 7, 7, 3, 0, 7,10, 9, 5, 7, 6, 5, 4,
4, 6, 5, 6, 7, 6, 5, 8, 15, 6, 5, 4, 11,14,13, 4,
15,10, 9, 4, 11,14,13,12, 8,10, 9, 8, 15,14,13,12,
11,10, 9,12, 7,11, 6, 8, 9, 8,10, 1, 7, 6, 5, 4,
},
{
15, 0, 0, 0,
15,14, 0, 0, 11,15,13, 0, 8,12,14,12, 15,10,11,11,
11, 8, 9,10, 9,14,13, 9, 8,10, 9, 8, 15,14,13,13,
11,14,10,12, 15,10,13,12, 11,14, 9,12, 8,10,13, 8,
13, 7, 9,12, 9,12,11,10, 5, 8, 7, 6, 1, 4, 3, 2,
},
{
3, 0, 0, 0,
0, 1, 0, 0, 4, 5, 6, 0, 8, 9,10,11, 12,13,14,15,
16,17,18,19, 20,21,22,23, 24,25,26,27, 28,29,30,31,
32,33,34,35, 36,37,38,39, 40,41,42,43, 44,45,46,47,
48,49,50,51, 52,53,54,55, 56,57,58,59, 60,61,62,63,
}
};
static const uint8_t total_zeros_len[16][16]= {
{1,3,3,4,4,5,5,6,6,7,7,8,8,9,9,9},
{3,3,3,3,3,4,4,4,4,5,5,6,6,6,6},
{4,3,3,3,4,4,3,3,4,5,5,6,5,6},
{5,3,4,4,3,3,3,4,3,4,5,5,5},
{4,4,4,3,3,3,3,3,4,5,4,5},
{6,5,3,3,3,3,3,3,4,3,6},
{6,5,3,3,3,2,3,4,3,6},
{6,4,5,3,2,2,3,3,6},
{6,6,4,2,2,3,2,5},
{5,5,3,2,2,2,4},
{4,4,3,3,1,3},
{4,4,2,1,3},
{3,3,1,2},
{2,2,1},
{1,1},
};
static const uint8_t total_zeros_bits[16][16]= {
{1,3,2,3,2,3,2,3,2,3,2,3,2,3,2,1},
{7,6,5,4,3,5,4,3,2,3,2,3,2,1,0},
{5,7,6,5,4,3,4,3,2,3,2,1,1,0},
{3,7,5,4,6,5,4,3,3,2,2,1,0},
{5,4,3,7,6,5,4,3,2,1,1,0},
{1,1,7,6,5,4,3,2,1,1,0},
{1,1,5,4,3,3,2,1,1,0},
{1,1,1,3,3,2,2,1,0},
{1,0,1,3,2,1,1,1},
{1,0,1,3,2,1,1},
{0,1,1,2,1,3},
{0,1,1,1,1},
{0,1,1,1},
{0,1,1},
{0,1},
};
static const uint8_t chroma_dc_total_zeros_len[3][4]= {
{ 1, 2, 3, 3,},
{ 1, 2, 2, 0,},
{ 1, 1, 0, 0,},
};
static const uint8_t chroma_dc_total_zeros_bits[3][4]= {
{ 1, 1, 1, 0,},
{ 1, 1, 0, 0,},
{ 1, 0, 0, 0,},
};
static const uint8_t run_len[7][16]={
{1,1},
{1,2,2},
{2,2,2,2},
{2,2,2,3,3},
{2,2,3,3,3,3},
{2,3,3,3,3,3,3},
{3,3,3,3,3,3,3,4,5,6,7,8,9,10,11},
};
static const uint8_t run_bits[7][16]={
{1,0},
{1,1,0},
{3,2,1,0},
{3,2,1,1,0},
{3,2,3,2,1,0},
{3,0,1,3,2,5,4},
{7,6,5,4,3,2,1,1,1,1,1,1,1,1,1},
};
static VLC coeff_token_vlc[4];
static VLC_TYPE coeff_token_vlc_tables[520+332+280+256][2];
static const int coeff_token_vlc_tables_size[4]={520,332,280,256};
static VLC chroma_dc_coeff_token_vlc;
static VLC_TYPE chroma_dc_coeff_token_vlc_table[256][2];
static const int chroma_dc_coeff_token_vlc_table_size = 256;
static VLC total_zeros_vlc[15];
static VLC_TYPE total_zeros_vlc_tables[15][512][2];
static const int total_zeros_vlc_tables_size = 512;
static VLC chroma_dc_total_zeros_vlc[3];
static VLC_TYPE chroma_dc_total_zeros_vlc_tables[3][8][2];
static const int chroma_dc_total_zeros_vlc_tables_size = 8;
static VLC run_vlc[6];
static VLC_TYPE run_vlc_tables[6][8][2];
static const int run_vlc_tables_size = 8;
static VLC run7_vlc;
static VLC_TYPE run7_vlc_table[96][2];
static const int run7_vlc_table_size = 96;
#define LEVEL_TAB_BITS 8
static int8_t cavlc_level_tab[7][1<<LEVEL_TAB_BITS][2];
/**
* gets the predicted number of non-zero coefficients.
* @param n block index
*/
static inline int pred_non_zero_count(H264Context *h, int n){
const int index8= scan8[n];
const int left= h->non_zero_count_cache[index8 - 1];
const int top = h->non_zero_count_cache[index8 - 8];
int i= left + top;
if(i<64) i= (i+1)>>1;
tprintf(h->s.avctx, "pred_nnz L%X T%X n%d s%d P%X\n", left, top, n, scan8[n], i&31);
return i&31;
}
static av_cold void init_cavlc_level_tab(void){
int suffix_length, mask;
unsigned int i;
for(suffix_length=0; suffix_length<7; suffix_length++){
for(i=0; i<(1<<LEVEL_TAB_BITS); i++){
int prefix= LEVEL_TAB_BITS - av_log2(2*i);
int level_code= (prefix<<suffix_length) + (i>>(LEVEL_TAB_BITS-prefix-1-suffix_length)) - (1<<suffix_length);
mask= -(level_code&1);
level_code= (((2+level_code)>>1) ^ mask) - mask;
if(prefix + 1 + suffix_length <= LEVEL_TAB_BITS){
cavlc_level_tab[suffix_length][i][0]= level_code;
cavlc_level_tab[suffix_length][i][1]= prefix + 1 + suffix_length;
}else if(prefix + 1 <= LEVEL_TAB_BITS){
cavlc_level_tab[suffix_length][i][0]= prefix+100;
cavlc_level_tab[suffix_length][i][1]= prefix + 1;
}else{
cavlc_level_tab[suffix_length][i][0]= LEVEL_TAB_BITS+100;
cavlc_level_tab[suffix_length][i][1]= LEVEL_TAB_BITS;
}
}
}
}
av_cold void ff_h264_decode_init_vlc(void){
static int done = 0;
if (!done) {
int i;
int offset;
done = 1;
chroma_dc_coeff_token_vlc.table = chroma_dc_coeff_token_vlc_table;
chroma_dc_coeff_token_vlc.table_allocated = chroma_dc_coeff_token_vlc_table_size;
init_vlc(&chroma_dc_coeff_token_vlc, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 4*5,
&chroma_dc_coeff_token_len [0], 1, 1,
&chroma_dc_coeff_token_bits[0], 1, 1,
INIT_VLC_USE_NEW_STATIC);
offset = 0;
for(i=0; i<4; i++){
coeff_token_vlc[i].table = coeff_token_vlc_tables+offset;
coeff_token_vlc[i].table_allocated = coeff_token_vlc_tables_size[i];
init_vlc(&coeff_token_vlc[i], COEFF_TOKEN_VLC_BITS, 4*17,
&coeff_token_len [i][0], 1, 1,
&coeff_token_bits[i][0], 1, 1,
INIT_VLC_USE_NEW_STATIC);
offset += coeff_token_vlc_tables_size[i];
}
/*
* This is a one time safety check to make sure that
* the packed static coeff_token_vlc table sizes
* were initialized correctly.
*/
assert(offset == FF_ARRAY_ELEMS(coeff_token_vlc_tables));
for(i=0; i<3; i++){
chroma_dc_total_zeros_vlc[i].table = chroma_dc_total_zeros_vlc_tables[i];
chroma_dc_total_zeros_vlc[i].table_allocated = chroma_dc_total_zeros_vlc_tables_size;
init_vlc(&chroma_dc_total_zeros_vlc[i],
CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 4,
&chroma_dc_total_zeros_len [i][0], 1, 1,
&chroma_dc_total_zeros_bits[i][0], 1, 1,
INIT_VLC_USE_NEW_STATIC);
}
for(i=0; i<15; i++){
total_zeros_vlc[i].table = total_zeros_vlc_tables[i];
total_zeros_vlc[i].table_allocated = total_zeros_vlc_tables_size;
init_vlc(&total_zeros_vlc[i],
TOTAL_ZEROS_VLC_BITS, 16,
&total_zeros_len [i][0], 1, 1,
&total_zeros_bits[i][0], 1, 1,
INIT_VLC_USE_NEW_STATIC);
}
for(i=0; i<6; i++){
run_vlc[i].table = run_vlc_tables[i];
run_vlc[i].table_allocated = run_vlc_tables_size;
init_vlc(&run_vlc[i],
RUN_VLC_BITS, 7,
&run_len [i][0], 1, 1,
&run_bits[i][0], 1, 1,
INIT_VLC_USE_NEW_STATIC);
}
run7_vlc.table = run7_vlc_table,
run7_vlc.table_allocated = run7_vlc_table_size;
init_vlc(&run7_vlc, RUN7_VLC_BITS, 16,
&run_len [6][0], 1, 1,
&run_bits[6][0], 1, 1,
INIT_VLC_USE_NEW_STATIC);
init_cavlc_level_tab();
}
}
/**
*
*/
static inline int get_level_prefix(GetBitContext *gb){
unsigned int buf;
int log;
OPEN_READER(re, gb);
UPDATE_CACHE(re, gb);
buf=GET_CACHE(re, gb);
log= 32 - av_log2(buf);
#ifdef TRACE
print_bin(buf>>(32-log), log);
av_log(NULL, AV_LOG_DEBUG, "%5d %2d %3d lpr @%5d in %s get_level_prefix\n", buf>>(32-log), log, log-1, get_bits_count(gb), __FILE__);
#endif
LAST_SKIP_BITS(re, gb, log);
CLOSE_READER(re, gb);
return log-1;
}
/**
* decodes a residual block.
* @param n block index
* @param scantable scantable
* @param max_coeff number of coefficients in the block
* @return <0 if an error occurred
*/
static int decode_residual(H264Context *h, GetBitContext *gb, DCTELEM *block, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff){
MpegEncContext * const s = &h->s;
static const int coeff_token_table_index[17]= {0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3};
int level[16];
int zeros_left, coeff_token, total_coeff, i, trailing_ones, run_before;
//FIXME put trailing_onex into the context
if(n >= CHROMA_DC_BLOCK_INDEX){
coeff_token= get_vlc2(gb, chroma_dc_coeff_token_vlc.table, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 1);
total_coeff= coeff_token>>2;
}else{
if(n == LUMA_DC_BLOCK_INDEX){
total_coeff= pred_non_zero_count(h, 0);
coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
total_coeff= coeff_token>>2;
}else{
total_coeff= pred_non_zero_count(h, n);
coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
total_coeff= coeff_token>>2;
}
}
h->non_zero_count_cache[ scan8[n] ]= total_coeff;
//FIXME set last_non_zero?
if(total_coeff==0)
return 0;
if(total_coeff > (unsigned)max_coeff) {
av_log(h->s.avctx, AV_LOG_ERROR, "corrupted macroblock %d %d (total_coeff=%d)\n", s->mb_x, s->mb_y, total_coeff);
return -1;
}
trailing_ones= coeff_token&3;
tprintf(h->s.avctx, "trailing:%d, total:%d\n", trailing_ones, total_coeff);
assert(total_coeff<=16);
i = show_bits(gb, 3);
skip_bits(gb, trailing_ones);
level[0] = 1-((i&4)>>1);
level[1] = 1-((i&2) );
level[2] = 1-((i&1)<<1);
if(trailing_ones<total_coeff) {
int mask, prefix;
int suffix_length = total_coeff > 10 & trailing_ones < 3;
int bitsi= show_bits(gb, LEVEL_TAB_BITS);
int level_code= cavlc_level_tab[suffix_length][bitsi][0];
skip_bits(gb, cavlc_level_tab[suffix_length][bitsi][1]);
if(level_code >= 100){
prefix= level_code - 100;
if(prefix == LEVEL_TAB_BITS)
prefix += get_level_prefix(gb);
//first coefficient has suffix_length equal to 0 or 1
if(prefix<14){ //FIXME try to build a large unified VLC table for all this
if(suffix_length)
level_code= (prefix<<1) + get_bits1(gb); //part
else
level_code= prefix; //part
}else if(prefix==14){
if(suffix_length)
level_code= (prefix<<1) + get_bits1(gb); //part
else
level_code= prefix + get_bits(gb, 4); //part
}else{
level_code= 30 + get_bits(gb, prefix-3); //part
if(prefix>=16){
if(prefix > 25+3){
av_log(h->s.avctx, AV_LOG_ERROR, "Invalid level prefix\n");
return -1;
}
level_code += (1<<(prefix-3))-4096;
}
}
if(trailing_ones < 3) level_code += 2;
suffix_length = 2;
mask= -(level_code&1);
level[trailing_ones]= (((2+level_code)>>1) ^ mask) - mask;
}else{
level_code += ((level_code>>31)|1) & -(trailing_ones < 3);
suffix_length = 1 + (level_code + 3U > 6U);
level[trailing_ones]= level_code;
}
//remaining coefficients have suffix_length > 0
for(i=trailing_ones+1;i<total_coeff;i++) {
static const unsigned int suffix_limit[7] = {0,3,6,12,24,48,INT_MAX };
int bitsi= show_bits(gb, LEVEL_TAB_BITS);
level_code= cavlc_level_tab[suffix_length][bitsi][0];
skip_bits(gb, cavlc_level_tab[suffix_length][bitsi][1]);
if(level_code >= 100){
prefix= level_code - 100;
if(prefix == LEVEL_TAB_BITS){
prefix += get_level_prefix(gb);
}
if(prefix<15){
level_code = (prefix<<suffix_length) + get_bits(gb, suffix_length);
}else{
level_code = (15<<suffix_length) + get_bits(gb, prefix-3);
if(prefix>=16)
level_code += (1<<(prefix-3))-4096;
}
mask= -(level_code&1);
level_code= (((2+level_code)>>1) ^ mask) - mask;
}
level[i]= level_code;
suffix_length+= suffix_limit[suffix_length] + level_code > 2U*suffix_limit[suffix_length];
}
}
if(total_coeff == max_coeff)
zeros_left=0;
else{
if(n >= CHROMA_DC_BLOCK_INDEX)
zeros_left= get_vlc2(gb, (chroma_dc_total_zeros_vlc-1)[ total_coeff ].table, CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 1);
else
zeros_left= get_vlc2(gb, (total_zeros_vlc-1)[ total_coeff ].table, TOTAL_ZEROS_VLC_BITS, 1);
}
#define STORE_BLOCK(type) \
scantable += zeros_left + total_coeff - 1; \
if(n >= LUMA_DC_BLOCK_INDEX){ \
((type*)block)[*scantable] = level[0]; \
for(i=1;i<total_coeff && zeros_left > 0;i++) { \
if(zeros_left < 7) \
run_before= get_vlc2(gb, (run_vlc-1)[zeros_left].table, RUN_VLC_BITS, 1); \
else \
run_before= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2); \
zeros_left -= run_before; \
scantable -= 1 + run_before; \
((type*)block)[*scantable]= level[i]; \
} \
for(;i<total_coeff;i++) { \
scantable--; \
((type*)block)[*scantable]= level[i]; \
} \
}else{ \
((type*)block)[*scantable] = ((int)(level[0] * qmul[*scantable] + 32))>>6; \
for(i=1;i<total_coeff && zeros_left > 0;i++) { \
if(zeros_left < 7) \
run_before= get_vlc2(gb, (run_vlc-1)[zeros_left].table, RUN_VLC_BITS, 1); \
else \
run_before= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2); \
zeros_left -= run_before; \
scantable -= 1 + run_before; \
((type*)block)[*scantable]= ((int)(level[i] * qmul[*scantable] + 32))>>6; \
} \
for(;i<total_coeff;i++) { \
scantable--; \
((type*)block)[*scantable]= ((int)(level[i] * qmul[*scantable] + 32))>>6; \
} \
}
if (h->pixel_shift) {
STORE_BLOCK(int32_t)
} else {
STORE_BLOCK(int16_t)
}
if(zeros_left<0){
av_log(h->s.avctx, AV_LOG_ERROR, "negative number of zero coeffs at %d %d\n", s->mb_x, s->mb_y);
return -1;
}
return 0;
}
int ff_h264_decode_mb_cavlc(H264Context *h){
MpegEncContext * const s = &h->s;
int mb_xy;
int partition_count;
unsigned int mb_type, cbp;
int dct8x8_allowed= h->pps.transform_8x8_mode;
const int pixel_shift = h->pixel_shift;
mb_xy = h->mb_xy = s->mb_x + s->mb_y*s->mb_stride;
tprintf(s->avctx, "pic:%d mb:%d/%d\n", h->frame_num, s->mb_x, s->mb_y);
cbp = 0; /* avoid warning. FIXME: find a solution without slowing
down the code */
if(h->slice_type_nos != AV_PICTURE_TYPE_I){
if(s->mb_skip_run==-1)
s->mb_skip_run= get_ue_golomb(&s->gb);
if (s->mb_skip_run--) {
if(FRAME_MBAFF && (s->mb_y&1) == 0){
if(s->mb_skip_run==0)
h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&s->gb);
}
decode_mb_skip(h);
return 0;
}
}
if(FRAME_MBAFF){
if( (s->mb_y&1) == 0 )
h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&s->gb);
}
h->prev_mb_skipped= 0;
mb_type= get_ue_golomb(&s->gb);
if(h->slice_type_nos == AV_PICTURE_TYPE_B){
if(mb_type < 23){
partition_count= b_mb_type_info[mb_type].partition_count;
mb_type= b_mb_type_info[mb_type].type;
}else{
mb_type -= 23;
goto decode_intra_mb;
}
}else if(h->slice_type_nos == AV_PICTURE_TYPE_P){
if(mb_type < 5){
partition_count= p_mb_type_info[mb_type].partition_count;
mb_type= p_mb_type_info[mb_type].type;
}else{
mb_type -= 5;
goto decode_intra_mb;
}
}else{
assert(h->slice_type_nos == AV_PICTURE_TYPE_I);
if(h->slice_type == AV_PICTURE_TYPE_SI && mb_type)
mb_type--;
decode_intra_mb:
if(mb_type > 25){
av_log(h->s.avctx, AV_LOG_ERROR, "mb_type %d in %c slice too large at %d %d\n", mb_type, av_get_picture_type_char(h->slice_type), s->mb_x, s->mb_y);
return -1;
}
partition_count=0;
cbp= i_mb_type_info[mb_type].cbp;
h->intra16x16_pred_mode= i_mb_type_info[mb_type].pred_mode;
mb_type= i_mb_type_info[mb_type].type;
}
if(MB_FIELD)
mb_type |= MB_TYPE_INTERLACED;
h->slice_table[ mb_xy ]= h->slice_num;
if(IS_INTRA_PCM(mb_type)){
unsigned int x;
// We assume these blocks are very rare so we do not optimize it.
align_get_bits(&s->gb);
// The pixels are stored in the same order as levels in h->mb array.
for(x=0; x < (CHROMA ? 384 : 256)*h->sps.bit_depth_luma/8; x++){
((uint8_t*)h->mb)[x]= get_bits(&s->gb, 8);
}
// In deblocking, the quantizer is 0
s->current_picture.qscale_table[mb_xy]= 0;
// All coeffs are present
memset(h->non_zero_count[mb_xy], 16, 32);
s->current_picture.mb_type[mb_xy]= mb_type;
return 0;
}
if(MB_MBAFF){
h->ref_count[0] <<= 1;
h->ref_count[1] <<= 1;
}
fill_decode_neighbors(h, mb_type);
fill_decode_caches(h, mb_type);
//mb_pred
if(IS_INTRA(mb_type)){
int pred_mode;
// init_top_left_availability(h);
if(IS_INTRA4x4(mb_type)){
int i;
int di = 1;
if(dct8x8_allowed && get_bits1(&s->gb)){
mb_type |= MB_TYPE_8x8DCT;
di = 4;
}
// fill_intra4x4_pred_table(h);
for(i=0; i<16; i+=di){
int mode= pred_intra_mode(h, i);
if(!get_bits1(&s->gb)){
const int rem_mode= get_bits(&s->gb, 3);
mode = rem_mode + (rem_mode >= mode);
}
if(di==4)
fill_rectangle( &h->intra4x4_pred_mode_cache[ scan8[i] ], 2, 2, 8, mode, 1 );
else
h->intra4x4_pred_mode_cache[ scan8[i] ] = mode;
}
ff_h264_write_back_intra_pred_mode(h);
if( ff_h264_check_intra4x4_pred_mode(h) < 0)
return -1;
}else{
h->intra16x16_pred_mode= ff_h264_check_intra_pred_mode(h, h->intra16x16_pred_mode);
if(h->intra16x16_pred_mode < 0)
return -1;
}
if(CHROMA){
pred_mode= ff_h264_check_intra_pred_mode(h, get_ue_golomb_31(&s->gb));
if(pred_mode < 0)
return -1;
h->chroma_pred_mode= pred_mode;
} else {
h->chroma_pred_mode = DC_128_PRED8x8;
}
}else if(partition_count==4){
int i, j, sub_partition_count[4], list, ref[2][4];
if(h->slice_type_nos == AV_PICTURE_TYPE_B){
for(i=0; i<4; i++){
h->sub_mb_type[i]= get_ue_golomb_31(&s->gb);
if(h->sub_mb_type[i] >=13){
av_log(h->s.avctx, AV_LOG_ERROR, "B sub_mb_type %u out of range at %d %d\n", h->sub_mb_type[i], s->mb_x, s->mb_y);
return -1;
}
sub_partition_count[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count;
h->sub_mb_type[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].type;
}
if( IS_DIRECT(h->sub_mb_type[0]|h->sub_mb_type[1]|h->sub_mb_type[2]|h->sub_mb_type[3])) {
ff_h264_pred_direct_motion(h, &mb_type);
h->ref_cache[0][scan8[4]] =
h->ref_cache[1][scan8[4]] =
h->ref_cache[0][scan8[12]] =
h->ref_cache[1][scan8[12]] = PART_NOT_AVAILABLE;
}
}else{
assert(h->slice_type_nos == AV_PICTURE_TYPE_P); //FIXME SP correct ?
for(i=0; i<4; i++){
h->sub_mb_type[i]= get_ue_golomb_31(&s->gb);
if(h->sub_mb_type[i] >=4){
av_log(h->s.avctx, AV_LOG_ERROR, "P sub_mb_type %u out of range at %d %d\n", h->sub_mb_type[i], s->mb_x, s->mb_y);
return -1;
}
sub_partition_count[i]= p_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count;
h->sub_mb_type[i]= p_sub_mb_type_info[ h->sub_mb_type[i] ].type;
}
}
for(list=0; list<h->list_count; list++){
int ref_count= IS_REF0(mb_type) ? 1 : h->ref_count[list];
for(i=0; i<4; i++){
if(IS_DIRECT(h->sub_mb_type[i])) continue;
if(IS_DIR(h->sub_mb_type[i], 0, list)){
unsigned int tmp;
if(ref_count == 1){
tmp= 0;
}else if(ref_count == 2){
tmp= get_bits1(&s->gb)^1;
}else{
tmp= get_ue_golomb_31(&s->gb);
if(tmp>=ref_count){
av_log(h->s.avctx, AV_LOG_ERROR, "ref %u overflow\n", tmp);
return -1;
}
}
ref[list][i]= tmp;
}else{
//FIXME
ref[list][i] = -1;
}
}
}
if(dct8x8_allowed)
dct8x8_allowed = get_dct8x8_allowed(h);
for(list=0; list<h->list_count; list++){
for(i=0; i<4; i++){
if(IS_DIRECT(h->sub_mb_type[i])) {
h->ref_cache[list][ scan8[4*i] ] = h->ref_cache[list][ scan8[4*i]+1 ];
continue;
}
h->ref_cache[list][ scan8[4*i] ]=h->ref_cache[list][ scan8[4*i]+1 ]=
h->ref_cache[list][ scan8[4*i]+8 ]=h->ref_cache[list][ scan8[4*i]+9 ]= ref[list][i];
if(IS_DIR(h->sub_mb_type[i], 0, list)){
const int sub_mb_type= h->sub_mb_type[i];
const int block_width= (sub_mb_type & (MB_TYPE_16x16|MB_TYPE_16x8)) ? 2 : 1;
for(j=0; j<sub_partition_count[i]; j++){
int mx, my;
const int index= 4*i + block_width*j;
int16_t (* mv_cache)[2]= &h->mv_cache[list][ scan8[index] ];
pred_motion(h, index, block_width, list, h->ref_cache[list][ scan8[index] ], &mx, &my);
mx += get_se_golomb(&s->gb);
my += get_se_golomb(&s->gb);
tprintf(s->avctx, "final mv:%d %d\n", mx, my);
if(IS_SUB_8X8(sub_mb_type)){
mv_cache[ 1 ][0]=
mv_cache[ 8 ][0]= mv_cache[ 9 ][0]= mx;
mv_cache[ 1 ][1]=
mv_cache[ 8 ][1]= mv_cache[ 9 ][1]= my;
}else if(IS_SUB_8X4(sub_mb_type)){
mv_cache[ 1 ][0]= mx;
mv_cache[ 1 ][1]= my;
}else if(IS_SUB_4X8(sub_mb_type)){
mv_cache[ 8 ][0]= mx;
mv_cache[ 8 ][1]= my;
}
mv_cache[ 0 ][0]= mx;
mv_cache[ 0 ][1]= my;
}
}else{
uint32_t *p= (uint32_t *)&h->mv_cache[list][ scan8[4*i] ][0];
p[0] = p[1]=
p[8] = p[9]= 0;
}
}
}
}else if(IS_DIRECT(mb_type)){
ff_h264_pred_direct_motion(h, &mb_type);
dct8x8_allowed &= h->sps.direct_8x8_inference_flag;
}else{
int list, mx, my, i;
//FIXME we should set ref_idx_l? to 0 if we use that later ...
if(IS_16X16(mb_type)){
for(list=0; list<h->list_count; list++){
unsigned int val;
if(IS_DIR(mb_type, 0, list)){
if(h->ref_count[list]==1){
val= 0;
}else if(h->ref_count[list]==2){
val= get_bits1(&s->gb)^1;
}else{
val= get_ue_golomb_31(&s->gb);
if(val >= h->ref_count[list]){
av_log(h->s.avctx, AV_LOG_ERROR, "ref %u overflow\n", val);
return -1;
}
}
fill_rectangle(&h->ref_cache[list][ scan8[0] ], 4, 4, 8, val, 1);
}
}
for(list=0; list<h->list_count; list++){
if(IS_DIR(mb_type, 0, list)){
pred_motion(h, 0, 4, list, h->ref_cache[list][ scan8[0] ], &mx, &my);
mx += get_se_golomb(&s->gb);
my += get_se_golomb(&s->gb);
tprintf(s->avctx, "final mv:%d %d\n", mx, my);
fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(mx,my), 4);
}
}
}
else if(IS_16X8(mb_type)){
for(list=0; list<h->list_count; list++){
for(i=0; i<2; i++){
unsigned int val;
if(IS_DIR(mb_type, i, list)){
if(h->ref_count[list] == 1){
val= 0;
}else if(h->ref_count[list] == 2){
val= get_bits1(&s->gb)^1;
}else{
val= get_ue_golomb_31(&s->gb);
if(val >= h->ref_count[list]){
av_log(h->s.avctx, AV_LOG_ERROR, "ref %u overflow\n", val);
return -1;
}
}
}else
val= LIST_NOT_USED&0xFF;
fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, val, 1);
}
}
for(list=0; list<h->list_count; list++){
for(i=0; i<2; i++){
unsigned int val;
if(IS_DIR(mb_type, i, list)){
pred_16x8_motion(h, 8*i, list, h->ref_cache[list][scan8[0] + 16*i], &mx, &my);
mx += get_se_golomb(&s->gb);
my += get_se_golomb(&s->gb);
tprintf(s->avctx, "final mv:%d %d\n", mx, my);
val= pack16to32(mx,my);
}else
val=0;
fill_rectangle(h->mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, val, 4);
}
}
}else{
assert(IS_8X16(mb_type));
for(list=0; list<h->list_count; list++){
for(i=0; i<2; i++){
unsigned int val;
if(IS_DIR(mb_type, i, list)){ //FIXME optimize
if(h->ref_count[list]==1){
val= 0;
}else if(h->ref_count[list]==2){
val= get_bits1(&s->gb)^1;
}else{
val= get_ue_golomb_31(&s->gb);
if(val >= h->ref_count[list]){
av_log(h->s.avctx, AV_LOG_ERROR, "ref %u overflow\n", val);
return -1;
}
}
}else
val= LIST_NOT_USED&0xFF;
fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, val, 1);
}
}
for(list=0; list<h->list_count; list++){
for(i=0; i<2; i++){
unsigned int val;
if(IS_DIR(mb_type, i, list)){
pred_8x16_motion(h, i*4, list, h->ref_cache[list][ scan8[0] + 2*i ], &mx, &my);
mx += get_se_golomb(&s->gb);
my += get_se_golomb(&s->gb);
tprintf(s->avctx, "final mv:%d %d\n", mx, my);
val= pack16to32(mx,my);
}else
val=0;
fill_rectangle(h->mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, val, 4);
}
}
}
}
if(IS_INTER(mb_type))
write_back_motion(h, mb_type);
if(!IS_INTRA16x16(mb_type)){
cbp= get_ue_golomb(&s->gb);
if(cbp > 47){
av_log(h->s.avctx, AV_LOG_ERROR, "cbp too large (%u) at %d %d\n", cbp, s->mb_x, s->mb_y);
return -1;
}
if(CHROMA){
if(IS_INTRA4x4(mb_type)) cbp= golomb_to_intra4x4_cbp[cbp];
else cbp= golomb_to_inter_cbp [cbp];
}else{
if(IS_INTRA4x4(mb_type)) cbp= golomb_to_intra4x4_cbp_gray[cbp];
else cbp= golomb_to_inter_cbp_gray[cbp];
}
}
if(dct8x8_allowed && (cbp&15) && !IS_INTRA(mb_type)){
mb_type |= MB_TYPE_8x8DCT*get_bits1(&s->gb);
}
h->cbp=
h->cbp_table[mb_xy]= cbp;
s->current_picture.mb_type[mb_xy]= mb_type;
if(cbp || IS_INTRA16x16(mb_type)){
int i8x8, i4x4, chroma_idx;
int dquant;
GetBitContext *gb= IS_INTRA(mb_type) ? h->intra_gb_ptr : h->inter_gb_ptr;
const uint8_t *scan, *scan8x8;
const int max_qp = 51 + 6*(h->sps.bit_depth_luma-8);
if(IS_INTERLACED(mb_type)){
scan8x8= s->qscale ? h->field_scan8x8_cavlc : h->field_scan8x8_cavlc_q0;
scan= s->qscale ? h->field_scan : h->field_scan_q0;
}else{
scan8x8= s->qscale ? h->zigzag_scan8x8_cavlc : h->zigzag_scan8x8_cavlc_q0;
scan= s->qscale ? h->zigzag_scan : h->zigzag_scan_q0;
}
dquant= get_se_golomb(&s->gb);
s->qscale += dquant;
if(((unsigned)s->qscale) > max_qp){
if(s->qscale<0) s->qscale+= max_qp+1;
else s->qscale-= max_qp+1;
if(((unsigned)s->qscale) > max_qp){
av_log(h->s.avctx, AV_LOG_ERROR, "dquant out of range (%d) at %d %d\n", dquant, s->mb_x, s->mb_y);
return -1;
}
}
h->chroma_qp[0]= get_chroma_qp(h, 0, s->qscale);
h->chroma_qp[1]= get_chroma_qp(h, 1, s->qscale);
if(IS_INTRA16x16(mb_type)){
AV_ZERO128(h->mb_luma_dc+0);
AV_ZERO128(h->mb_luma_dc+8);
AV_ZERO128(h->mb_luma_dc+16);
AV_ZERO128(h->mb_luma_dc+24);
if( decode_residual(h, h->intra_gb_ptr, h->mb_luma_dc, LUMA_DC_BLOCK_INDEX, scan, h->dequant4_coeff[0][s->qscale], 16) < 0){
return -1; //FIXME continue if partitioned and other return -1 too
}
assert((cbp&15) == 0 || (cbp&15) == 15);
if(cbp&15){
for(i8x8=0; i8x8<4; i8x8++){
for(i4x4=0; i4x4<4; i4x4++){
const int index= i4x4 + 4*i8x8;
if( decode_residual(h, h->intra_gb_ptr, h->mb + (16*index << pixel_shift), index, scan + 1, h->dequant4_coeff[0][s->qscale], 15) < 0 ){
return -1;
}
}
}
}else{
fill_rectangle(&h->non_zero_count_cache[scan8[0]], 4, 4, 8, 0, 1);
}
}else{
for(i8x8=0; i8x8<4; i8x8++){
if(cbp & (1<<i8x8)){
if(IS_8x8DCT(mb_type)){
DCTELEM *buf = &h->mb[64*i8x8 << pixel_shift];
uint8_t *nnz;
for(i4x4=0; i4x4<4; i4x4++){
if( decode_residual(h, gb, buf, i4x4+4*i8x8, scan8x8+16*i4x4,
h->dequant8_coeff[IS_INTRA( mb_type ) ? 0:1][s->qscale], 16) <0 )
return -1;
}
nnz= &h->non_zero_count_cache[ scan8[4*i8x8] ];
nnz[0] += nnz[1] + nnz[8] + nnz[9];
}else{
for(i4x4=0; i4x4<4; i4x4++){
const int index= i4x4 + 4*i8x8;
if( decode_residual(h, gb, h->mb + (16*index << pixel_shift), index, scan, h->dequant4_coeff[IS_INTRA( mb_type ) ? 0:3][s->qscale], 16) <0 ){
return -1;
}
}
}
}else{
uint8_t * const nnz= &h->non_zero_count_cache[ scan8[4*i8x8] ];
nnz[0] = nnz[1] = nnz[8] = nnz[9] = 0;
}
}
}
if(cbp&0x30){
for(chroma_idx=0; chroma_idx<2; chroma_idx++)
if( decode_residual(h, gb, h->mb + ((256 + 16*4*chroma_idx) << pixel_shift), CHROMA_DC_BLOCK_INDEX+chroma_idx, chroma_dc_scan, NULL, 4) < 0){
return -1;
}
}
if(cbp&0x20){
for(chroma_idx=0; chroma_idx<2; chroma_idx++){
const uint32_t *qmul = h->dequant4_coeff[chroma_idx+1+(IS_INTRA( mb_type ) ? 0:3)][h->chroma_qp[chroma_idx]];
for(i4x4=0; i4x4<4; i4x4++){
const int index= 16 + 4*chroma_idx + i4x4;
if( decode_residual(h, gb, h->mb + (16*index << pixel_shift), index, scan + 1, qmul, 15) < 0){
return -1;
}
}
}
}else{
uint8_t * const nnz= &h->non_zero_count_cache[0];
nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] =
nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0;
}
}else{
uint8_t * const nnz= &h->non_zero_count_cache[0];
fill_rectangle(&nnz[scan8[0]], 4, 4, 8, 0, 1);
nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] =
nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0;
}
s->current_picture.qscale_table[mb_xy]= s->qscale;
write_back_non_zero_count(h);
if(MB_MBAFF){
h->ref_count[0] >>= 1;
h->ref_count[1] >>= 1;
}
return 0;
}
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