| e1e94902 | /* * 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 */ /** |
| ba87f080 | * @file |
| 41ed7ab4 | * H.264 / AVC / MPEG-4 part10 cavlc bitstream decoding. |
| e1e94902 | * @author Michael Niedermayer <michaelni@gmx.at> */ |
| 6d2b6f21 | #define CABAC(h) 0 |
| 38331d20 | #define UNCHECKED_BITSTREAM_READER 1 |
| ddd60f28 | |
| e1e94902 | #include "internal.h" #include "avcodec.h" #include "h264.h" #include "h264_mvpred.h" |
| a7da517f | #include "h264data.h" |
| e1e94902 | #include "golomb.h" |
| e0c16e4e | #include "mpegutils.h" |
| 506ffa79 | #include "libavutil/avassert.h" |
| e1e94902 |
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,
};
|
| 231a6df9 |
static const uint8_t chroma422_dc_coeff_token_len[4*9]={
1, 0, 0, 0,
7, 2, 0, 0,
7, 7, 3, 0,
9, 7, 7, 5,
9, 9, 7, 6,
10, 10, 9, 7,
11, 11, 10, 7,
12, 12, 11, 10,
13, 12, 12, 11,
};
static const uint8_t chroma422_dc_coeff_token_bits[4*9]={
1, 0, 0, 0,
15, 1, 0, 0,
14, 13, 1, 0,
7, 12, 11, 1,
6, 5, 10, 1,
7, 6, 4, 9,
7, 6, 5, 8,
7, 6, 5, 4,
7, 5, 4, 4,
};
|
| e1e94902 |
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,},
};
|
| 231a6df9 |
static const uint8_t chroma422_dc_total_zeros_len[7][8]= {
{ 1, 3, 3, 4, 4, 4, 5, 5 },
{ 3, 2, 3, 3, 3, 3, 3 },
{ 3, 3, 2, 2, 3, 3 },
{ 3, 2, 2, 2, 3 },
{ 2, 2, 2, 2 },
{ 2, 2, 1 },
{ 1, 1 },
};
static const uint8_t chroma422_dc_total_zeros_bits[7][8]= {
{ 1, 2, 3, 2, 3, 1, 1, 0 },
{ 0, 1, 1, 4, 5, 6, 7 },
{ 0, 1, 1, 2, 6, 7 },
{ 6, 0, 1, 2, 7 },
{ 0, 1, 2, 3 },
{ 0, 1, 1 },
{ 0, 1 },
};
|
| e1e94902 |
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;
|
| 231a6df9 | static VLC chroma422_dc_coeff_token_vlc; static VLC_TYPE chroma422_dc_coeff_token_vlc_table[8192][2]; static const int chroma422_dc_coeff_token_vlc_table_size = 8192; |
| e1e94902 | 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; |
| 231a6df9 | static VLC chroma422_dc_total_zeros_vlc[7]; static VLC_TYPE chroma422_dc_total_zeros_vlc_tables[7][32][2]; static const int chroma422_dc_total_zeros_vlc_tables_size = 32; |
| e1e94902 | 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]; |
| 231a6df9 | #define CHROMA_DC_COEFF_TOKEN_VLC_BITS 8 #define CHROMA422_DC_COEFF_TOKEN_VLC_BITS 13 #define COEFF_TOKEN_VLC_BITS 8 #define TOTAL_ZEROS_VLC_BITS 9 #define CHROMA_DC_TOTAL_ZEROS_VLC_BITS 3 #define CHROMA422_DC_TOTAL_ZEROS_VLC_BITS 5 #define RUN_VLC_BITS 3 #define RUN7_VLC_BITS 6 |
| e1e94902 | /** |
| 58c42af7 | * Get the predicted number of non-zero coefficients. |
| e1e94902 | * @param n block index */ |
| 7505c8df | static inline int pred_non_zero_count(const H264Context *h, H264SliceContext *sl, int n) |
| f69574cf |
{ |
| e1e94902 |
const int index8= scan8[n]; |
| f69574cf |
const int left = sl->non_zero_count_cache[index8 - 1];
const int top = sl->non_zero_count_cache[index8 - 8]; |
| e1e94902 |
int i= left + top;
if(i<64) i= (i+1)>>1;
|
| 6a85dfc8 |
ff_tlog(h->avctx, "pred_nnz L%X T%X n%d s%d P%X\n", left, top, n, scan8[n], i&31); |
| e1e94902 |
return i&31;
}
static av_cold void init_cavlc_level_tab(void){ |
| 8babfc03 |
int suffix_length; |
| e1e94902 |
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);
if(prefix + 1 + suffix_length <= LEVEL_TAB_BITS){ |
| 8babfc03 |
int level_code = (prefix << suffix_length) +
(i >> (av_log2(i) - suffix_length)) - (1 << suffix_length);
int mask = -(level_code&1);
level_code = (((2 + level_code) >> 1) ^ mask) - mask; |
| e1e94902 |
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);
|
| 231a6df9 |
chroma422_dc_coeff_token_vlc.table = chroma422_dc_coeff_token_vlc_table;
chroma422_dc_coeff_token_vlc.table_allocated = chroma422_dc_coeff_token_vlc_table_size;
init_vlc(&chroma422_dc_coeff_token_vlc, CHROMA422_DC_COEFF_TOKEN_VLC_BITS, 4*9,
&chroma422_dc_coeff_token_len [0], 1, 1,
&chroma422_dc_coeff_token_bits[0], 1, 1,
INIT_VLC_USE_NEW_STATIC);
|
| e1e94902 |
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.
*/ |
| 71060007 |
av_assert0(offset == FF_ARRAY_ELEMS(coeff_token_vlc_tables)); |
| e1e94902 |
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);
} |
| 231a6df9 |
for(i=0; i<7; i++){
chroma422_dc_total_zeros_vlc[i].table = chroma422_dc_total_zeros_vlc_tables[i];
chroma422_dc_total_zeros_vlc[i].table_allocated = chroma422_dc_total_zeros_vlc_tables_size;
init_vlc(&chroma422_dc_total_zeros_vlc[i],
CHROMA422_DC_TOTAL_ZEROS_VLC_BITS, 8,
&chroma422_dc_total_zeros_len [i][0], 1, 1,
&chroma422_dc_total_zeros_bits[i][0], 1, 1,
INIT_VLC_USE_NEW_STATIC);
}
|
| e1e94902 |
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);
LAST_SKIP_BITS(re, gb, log);
CLOSE_READER(re, gb);
return log-1;
}
/** |
| 58c42af7 | * Decode a residual block. |
| e1e94902 | * @param n block index * @param scantable scantable * @param max_coeff number of coefficients in the block * @return <0 if an error occurred */ |
| 7505c8df | static int decode_residual(const H264Context *h, H264SliceContext *sl, |
| f69574cf |
GetBitContext *gb, int16_t *block, int n,
const uint8_t *scantable, const uint32_t *qmul,
int max_coeff)
{ |
| e1e94902 |
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]; |
| b70c95e0 |
int zeros_left, coeff_token, total_coeff, i, trailing_ones, run_before; |
| e1e94902 |
//FIXME put trailing_onex into the context
|
| c90b9442 |
if(max_coeff <= 8){ |
| 231a6df9 |
if (max_coeff == 4)
coeff_token = get_vlc2(gb, chroma_dc_coeff_token_vlc.table, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 1);
else
coeff_token = get_vlc2(gb, chroma422_dc_coeff_token_vlc.table, CHROMA422_DC_COEFF_TOKEN_VLC_BITS, 1); |
| e1e94902 |
total_coeff= coeff_token>>2;
}else{ |
| c90b9442 |
if(n >= LUMA_DC_BLOCK_INDEX){ |
| f69574cf |
total_coeff= pred_non_zero_count(h, sl, (n - LUMA_DC_BLOCK_INDEX)*16); |
| e1e94902 |
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{ |
| f69574cf |
total_coeff= pred_non_zero_count(h, sl, n); |
| e1e94902 |
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;
}
} |
| f69574cf |
sl->non_zero_count_cache[scan8[n]] = total_coeff; |
| e1e94902 |
//FIXME set last_non_zero?
if(total_coeff==0)
return 0;
if(total_coeff > (unsigned)max_coeff) { |
| d4d9068c |
av_log(h->avctx, AV_LOG_ERROR, "corrupted macroblock %d %d (total_coeff=%d)\n", sl->mb_x, sl->mb_y, total_coeff); |
| e1e94902 |
return -1;
}
trailing_ones= coeff_token&3; |
| 6a85dfc8 |
ff_tlog(h->avctx, "trailing:%d, total:%d\n", trailing_ones, total_coeff); |
| 506ffa79 |
av_assert2(total_coeff<=16); |
| e1e94902 |
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; |
| 8ba43617 |
int suffix_length = total_coeff > 10 & trailing_ones < 3; |
| e1e94902 |
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{ |
| 39f0a45a |
level_code= 30; |
| 9885284c |
if(prefix>=16){
if(prefix > 25+3){ |
| 2c541554 |
av_log(h->avctx, AV_LOG_ERROR, "Invalid level prefix\n"); |
| 9885284c |
return -1;
} |
| e1e94902 |
level_code += (1<<(prefix-3))-4096; |
| 9885284c |
} |
| 39f0a45a |
level_code += get_bits(gb, prefix-3); //part |
| e1e94902 |
}
if(trailing_ones < 3) level_code += 2;
suffix_length = 2;
mask= -(level_code&1);
level[trailing_ones]= (((2+level_code)>>1) ^ mask) - mask;
}else{ |
| c78295ad |
level_code += ((level_code>>31)|1) & -(trailing_ones < 3); |
| e1e94902 | |
| eeb1e92f |
suffix_length = 1 + (level_code + 3U > 6U); |
| e1e94902 |
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{ |
| 10ece44d |
level_code = 15<<suffix_length;
if (prefix>=16) {
if(prefix > 25+3){
av_log(h->avctx, AV_LOG_ERROR, "Invalid level prefix\n");
return AVERROR_INVALIDDATA;
} |
| e1e94902 |
level_code += (1<<(prefix-3))-4096; |
| 10ece44d |
}
level_code += get_bits(gb, prefix-3); |
| e1e94902 |
}
mask= -(level_code&1);
level_code= (((2+level_code)>>1) ^ mask) - mask;
}
level[i]= level_code; |
| 7abc8603 |
suffix_length+= suffix_limit[suffix_length] + level_code > 2U*suffix_limit[suffix_length]; |
| e1e94902 |
}
}
if(total_coeff == max_coeff)
zeros_left=0;
else{ |
| 231a6df9 |
if (max_coeff <= 8) {
if (max_coeff == 4)
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, (chroma422_dc_total_zeros_vlc-1)[total_coeff].table,
CHROMA422_DC_TOTAL_ZEROS_VLC_BITS, 1);
} else { |
| 449d1442 |
zeros_left= get_vlc2(gb, (total_zeros_vlc-1)[ total_coeff ].table, TOTAL_ZEROS_VLC_BITS, 1); |
| 231a6df9 |
} |
| e1e94902 |
}
|
| dc172ecc |
#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; \
} \
}
|
| e7077f5e |
if (h->pixel_shift) { |
| dc172ecc |
STORE_BLOCK(int32_t)
} else {
STORE_BLOCK(int16_t) |
| e1e94902 |
}
if(zeros_left<0){ |
| d76559fb |
av_log(h->avctx, AV_LOG_ERROR, "negative number of zero coeffs at %d %d\n", sl->mb_x, sl->mb_y); |
| e1e94902 |
return -1;
}
return 0;
}
|
| 7505c8df |
static av_always_inline
int decode_luma_residual(const H264Context *h, H264SliceContext *sl,
GetBitContext *gb, const uint8_t *scan,
const uint8_t *scan8x8, int pixel_shift,
int mb_type, int cbp, int p)
{ |
| c90b9442 |
int i4x4, i8x8; |
| d231e84b |
int qscale = p == 0 ? sl->qscale : sl->chroma_qp[p - 1]; |
| c90b9442 |
if(IS_INTRA16x16(mb_type)){ |
| bf03a878 |
AV_ZERO128(sl->mb_luma_dc[p]+0);
AV_ZERO128(sl->mb_luma_dc[p]+8);
AV_ZERO128(sl->mb_luma_dc[p]+16);
AV_ZERO128(sl->mb_luma_dc[p]+24); |
| 404a416d |
if (decode_residual(h, sl, gb, sl->mb_luma_dc[p], LUMA_DC_BLOCK_INDEX + p, scan, NULL, 16) < 0) { |
| c90b9442 |
return -1; //FIXME continue if partitioned and other return -1 too
}
|
| 506ffa79 |
av_assert2((cbp&15) == 0 || (cbp&15) == 15); |
| c90b9442 |
if(cbp&15){
for(i8x8=0; i8x8<4; i8x8++){
for(i4x4=0; i4x4<4; i4x4++){
const int index= i4x4 + 4*i8x8 + p*16; |
| 404a416d |
if( decode_residual(h, sl, gb, sl->mb + (16*index << pixel_shift), |
| 3176217c |
index, scan + 1, h->ps.pps->dequant4_coeff[p][qscale], 15) < 0 ){ |
| c90b9442 |
return -1;
}
}
}
return 0xf;
}else{ |
| f69574cf |
fill_rectangle(&sl->non_zero_count_cache[scan8[p*16]], 4, 4, 8, 0, 1); |
| c90b9442 |
return 0;
}
}else{
int cqm = (IS_INTRA( mb_type ) ? 0:3)+p;
/* For CAVLC 4:4:4, we need to keep track of the luma 8x8 CBP for deblocking nnz purposes. */
int new_cbp = 0;
for(i8x8=0; i8x8<4; i8x8++){
if(cbp & (1<<i8x8)){
if(IS_8x8DCT(mb_type)){ |
| bf03a878 |
int16_t *buf = &sl->mb[64*i8x8+256*p << pixel_shift]; |
| c90b9442 |
uint8_t *nnz;
for(i4x4=0; i4x4<4; i4x4++){
const int index= i4x4 + 4*i8x8 + p*16; |
| f69574cf |
if( decode_residual(h, sl, gb, buf, index, scan8x8+16*i4x4, |
| 3176217c |
h->ps.pps->dequant8_coeff[cqm][qscale], 16) < 0 ) |
| c90b9442 |
return -1;
} |
| f69574cf |
nnz = &sl->non_zero_count_cache[scan8[4 * i8x8 + p * 16]]; |
| c90b9442 |
nnz[0] += nnz[1] + nnz[8] + nnz[9];
new_cbp |= !!nnz[0] << i8x8;
}else{
for(i4x4=0; i4x4<4; i4x4++){
const int index= i4x4 + 4*i8x8 + p*16; |
| bf03a878 |
if( decode_residual(h, sl, gb, sl->mb + (16*index << pixel_shift), index, |
| 3176217c |
scan, h->ps.pps->dequant4_coeff[cqm][qscale], 16) < 0 ){ |
| c90b9442 |
return -1;
} |
| f69574cf |
new_cbp |= sl->non_zero_count_cache[scan8[index]] << i8x8; |
| c90b9442 |
}
}
}else{ |
| f69574cf |
uint8_t * const nnz = &sl->non_zero_count_cache[scan8[4 * i8x8 + p * 16]]; |
| c90b9442 |
nnz[0] = nnz[1] = nnz[8] = nnz[9] = 0;
}
}
return new_cbp;
}
}
|
| 7505c8df | int ff_h264_decode_mb_cavlc(const H264Context *h, H264SliceContext *sl) |
| d231e84b |
{ |
| e1e94902 |
int mb_xy;
int partition_count;
unsigned int mb_type, cbp; |
| 3176217c |
int dct8x8_allowed= h->ps.pps->transform_8x8_mode;
int decode_chroma = h->ps.sps->chroma_format_idc == 1 || h->ps.sps->chroma_format_idc == 2; |
| 6e3ef511 |
const int pixel_shift = h->pixel_shift; |
| e1e94902 | |
| d4d9068c |
mb_xy = sl->mb_xy = sl->mb_x + sl->mb_y*h->mb_stride; |
| e1e94902 | |
| 94011f99 |
ff_tlog(h->avctx, "pic:%d mb:%d/%d\n", h->poc.frame_num, sl->mb_x, sl->mb_y); |
| e1e94902 |
cbp = 0; /* avoid warning. FIXME: find a solution without slowing
down the code */ |
| 56febc99 |
if (sl->slice_type_nos != AV_PICTURE_TYPE_I) { |
| 47a0d393 |
if (sl->mb_skip_run == -1) |
| 55215383 |
sl->mb_skip_run = get_ue_golomb_long(&sl->gb); |
| e1e94902 | |
| 47a0d393 |
if (sl->mb_skip_run--) { |
| d4d9068c |
if (FRAME_MBAFF(h) && (sl->mb_y & 1) == 0) { |
| 47a0d393 |
if (sl->mb_skip_run == 0) |
| e9b2383b |
sl->mb_mbaff = sl->mb_field_decoding_flag = get_bits1(&sl->gb); |
| e1e94902 |
} |
| d231e84b |
decode_mb_skip(h, sl); |
| e1e94902 |
return 0;
}
} |
| 7bece9b2 |
if (FRAME_MBAFF(h)) { |
| d4d9068c |
if ((sl->mb_y & 1) == 0) |
| e9b2383b |
sl->mb_mbaff = sl->mb_field_decoding_flag = get_bits1(&sl->gb); |
| e1e94902 |
}
|
| 5355ed6b |
sl->prev_mb_skipped = 0; |
| e1e94902 | |
| f42485db |
mb_type= get_ue_golomb(&sl->gb); |
| 56febc99 |
if (sl->slice_type_nos == AV_PICTURE_TYPE_B) { |
| e1e94902 |
if(mb_type < 23){ |
| a7da517f |
partition_count = ff_h264_b_mb_type_info[mb_type].partition_count;
mb_type = ff_h264_b_mb_type_info[mb_type].type; |
| e1e94902 |
}else{
mb_type -= 23;
goto decode_intra_mb;
} |
| 56febc99 |
} else if (sl->slice_type_nos == AV_PICTURE_TYPE_P) { |
| e1e94902 |
if(mb_type < 5){ |
| a7da517f |
partition_count = ff_h264_p_mb_type_info[mb_type].partition_count;
mb_type = ff_h264_p_mb_type_info[mb_type].type; |
| e1e94902 |
}else{
mb_type -= 5;
goto decode_intra_mb;
}
}else{ |
| 97c8ecaa |
av_assert2(sl->slice_type_nos == AV_PICTURE_TYPE_I); |
| 56febc99 |
if (sl->slice_type == AV_PICTURE_TYPE_SI && mb_type) |
| e1e94902 |
mb_type--;
decode_intra_mb:
if(mb_type > 25){ |
| d4d9068c |
av_log(h->avctx, AV_LOG_ERROR, "mb_type %d in %c slice too large at %d %d\n", mb_type, av_get_picture_type_char(sl->slice_type), sl->mb_x, sl->mb_y); |
| e1e94902 |
return -1;
}
partition_count=0; |
| a7da517f |
cbp = ff_h264_i_mb_type_info[mb_type].cbp;
sl->intra16x16_pred_mode = ff_h264_i_mb_type_info[mb_type].pred_mode;
mb_type = ff_h264_i_mb_type_info[mb_type].type; |
| e1e94902 |
}
|
| bc98e8c0 |
if (MB_FIELD(sl)) |
| e1e94902 |
mb_type |= MB_TYPE_INTERLACED;
|
| 56febc99 |
h->slice_table[mb_xy] = sl->slice_num; |
| e1e94902 |
if(IS_INTRA_PCM(mb_type)){ |
| 3176217c |
const int mb_size = ff_h264_mb_sizes[h->ps.sps->chroma_format_idc] *
h->ps.sps->bit_depth_luma; |
| e1e94902 |
// We assume these blocks are very rare so we do not optimize it. |
| f42485db |
sl->intra_pcm_ptr = align_get_bits(&sl->gb);
if (get_bits_left(&sl->gb) < mb_size) { |
| 074c769d |
av_log(h->avctx, AV_LOG_ERROR, "Not enough data for an intra PCM block.\n");
return AVERROR_INVALIDDATA;
} |
| f42485db |
skip_bits_long(&sl->gb, mb_size); |
| e1e94902 |
// In deblocking, the quantizer is 0 |
| 759001c5 |
h->cur_pic.qscale_table[mb_xy] = 0; |
| e1e94902 |
// All coeffs are present |
| c90b9442 |
memset(h->non_zero_count[mb_xy], 16, 48); |
| e1e94902 | |
| 759001c5 |
h->cur_pic.mb_type[mb_xy] = mb_type; |
| e1e94902 |
return 0;
}
|
| 8b00f4df |
fill_decode_neighbors(h, sl, mb_type);
fill_decode_caches(h, sl, mb_type); |
| e1e94902 |
//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; |
| f42485db |
if(dct8x8_allowed && get_bits1(&sl->gb)){ |
| e1e94902 |
mb_type |= MB_TYPE_8x8DCT;
di = 4;
}
// fill_intra4x4_pred_table(h);
for(i=0; i<16; i+=di){ |
| 7d8154ed |
int mode = pred_intra_mode(h, sl, i); |
| e1e94902 | |
| f42485db |
if(!get_bits1(&sl->gb)){
const int rem_mode= get_bits(&sl->gb, 3); |
| e1e94902 |
mode = rem_mode + (rem_mode >= mode);
}
if(di==4) |
| 7d8154ed |
fill_rectangle(&sl->intra4x4_pred_mode_cache[ scan8[i] ], 2, 2, 8, mode, 1); |
| e1e94902 |
else |
| 7d8154ed |
sl->intra4x4_pred_mode_cache[scan8[i]] = mode; |
| e1e94902 |
} |
| 7d8154ed |
write_back_intra_pred_mode(h, sl); |
| ecc31f6b |
if (ff_h264_check_intra4x4_pred_mode(sl->intra4x4_pred_mode_cache, h->avctx,
sl->top_samples_available, sl->left_samples_available) < 0) |
| e1e94902 |
return -1;
}else{ |
| ecc31f6b |
sl->intra16x16_pred_mode = ff_h264_check_intra_pred_mode(h->avctx, sl->top_samples_available,
sl->left_samples_available, sl->intra16x16_pred_mode, 0); |
| 4bd5ac20 |
if (sl->intra16x16_pred_mode < 0) |
| e1e94902 |
return -1;
} |
| c90b9442 |
if(decode_chroma){ |
| ecc31f6b |
pred_mode= ff_h264_check_intra_pred_mode(h->avctx, sl->top_samples_available,
sl->left_samples_available, get_ue_golomb_31(&sl->gb), 1); |
| e1e94902 |
if(pred_mode < 0)
return -1; |
| 4bd5ac20 |
sl->chroma_pred_mode = pred_mode; |
| 7f8c11b0 |
} else { |
| 4bd5ac20 |
sl->chroma_pred_mode = DC_128_PRED8x8; |
| e1e94902 |
}
}else if(partition_count==4){
int i, j, sub_partition_count[4], list, ref[2][4];
|
| 56febc99 |
if (sl->slice_type_nos == AV_PICTURE_TYPE_B) { |
| e1e94902 |
for(i=0; i<4; i++){ |
| f42485db |
sl->sub_mb_type[i]= get_ue_golomb_31(&sl->gb); |
| ed451a08 |
if(sl->sub_mb_type[i] >=13){ |
| d4d9068c |
av_log(h->avctx, AV_LOG_ERROR, "B sub_mb_type %u out of range at %d %d\n", sl->sub_mb_type[i], sl->mb_x, sl->mb_y); |
| e1e94902 |
return -1;
} |
| a7da517f |
sub_partition_count[i] = ff_h264_b_sub_mb_type_info[sl->sub_mb_type[i]].partition_count;
sl->sub_mb_type[i] = ff_h264_b_sub_mb_type_info[sl->sub_mb_type[i]].type; |
| e1e94902 |
} |
| ed451a08 |
if( IS_DIRECT(sl->sub_mb_type[0]|sl->sub_mb_type[1]|sl->sub_mb_type[2]|sl->sub_mb_type[3])) { |
| e6287f07 |
ff_h264_pred_direct_motion(h, sl, &mb_type);
sl->ref_cache[0][scan8[4]] =
sl->ref_cache[1][scan8[4]] =
sl->ref_cache[0][scan8[12]] =
sl->ref_cache[1][scan8[12]] = PART_NOT_AVAILABLE; |
| e1e94902 |
}
}else{ |
| 97c8ecaa |
av_assert2(sl->slice_type_nos == AV_PICTURE_TYPE_P); //FIXME SP correct ? |
| e1e94902 |
for(i=0; i<4; i++){ |
| f42485db |
sl->sub_mb_type[i]= get_ue_golomb_31(&sl->gb); |
| ed451a08 |
if(sl->sub_mb_type[i] >=4){ |
| d4d9068c |
av_log(h->avctx, AV_LOG_ERROR, "P sub_mb_type %u out of range at %d %d\n", sl->sub_mb_type[i], sl->mb_x, sl->mb_y); |
| e1e94902 |
return -1;
} |
| a7da517f |
sub_partition_count[i] = ff_h264_p_sub_mb_type_info[sl->sub_mb_type[i]].partition_count;
sl->sub_mb_type[i] = ff_h264_p_sub_mb_type_info[sl->sub_mb_type[i]].type; |
| e1e94902 |
}
}
|
| 95eb35f3 |
for (list = 0; list < sl->list_count; list++) { |
| 797ba4d5 |
int ref_count = IS_REF0(mb_type) ? 1 : sl->ref_count[list] << MB_MBAFF(sl); |
| e1e94902 |
for(i=0; i<4; i++){ |
| ed451a08 |
if(IS_DIRECT(sl->sub_mb_type[i])) continue;
if(IS_DIR(sl->sub_mb_type[i], 0, list)){ |
| e1e94902 |
unsigned int tmp;
if(ref_count == 1){
tmp= 0;
}else if(ref_count == 2){ |
| f42485db |
tmp= get_bits1(&sl->gb)^1; |
| e1e94902 |
}else{ |
| f42485db |
tmp= get_ue_golomb_31(&sl->gb); |
| e1e94902 |
if(tmp>=ref_count){ |
| 2c541554 |
av_log(h->avctx, AV_LOG_ERROR, "ref %u overflow\n", tmp); |
| e1e94902 |
return -1;
}
}
ref[list][i]= tmp;
}else{
//FIXME
ref[list][i] = -1;
}
}
}
if(dct8x8_allowed) |
| ed451a08 |
dct8x8_allowed = get_dct8x8_allowed(h, sl); |
| e1e94902 | |
| 95eb35f3 |
for (list = 0; list < sl->list_count; list++) { |
| e1e94902 |
for(i=0; i<4; i++){ |
| ed451a08 |
if(IS_DIRECT(sl->sub_mb_type[i])) { |
| e6287f07 |
sl->ref_cache[list][ scan8[4*i] ] = sl->ref_cache[list][ scan8[4*i]+1 ]; |
| e1e94902 |
continue;
} |
| e6287f07 |
sl->ref_cache[list][ scan8[4*i] ]=sl->ref_cache[list][ scan8[4*i]+1 ]=
sl->ref_cache[list][ scan8[4*i]+8 ]=sl->ref_cache[list][ scan8[4*i]+9 ]= ref[list][i]; |
| e1e94902 | |
| ed451a08 |
if(IS_DIR(sl->sub_mb_type[i], 0, list)){
const int sub_mb_type= sl->sub_mb_type[i]; |
| e1e94902 |
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; |
| e6287f07 |
int16_t (* mv_cache)[2]= &sl->mv_cache[list][ scan8[index] ];
pred_motion(h, sl, index, block_width, list, sl->ref_cache[list][ scan8[index] ], &mx, &my); |
| f42485db |
mx += get_se_golomb(&sl->gb);
my += get_se_golomb(&sl->gb); |
| 6a85dfc8 |
ff_tlog(h->avctx, "final mv:%d %d\n", mx, my); |
| e1e94902 |
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{ |
| e6287f07 |
uint32_t *p= (uint32_t *)&sl->mv_cache[list][ scan8[4*i] ][0]; |
| e1e94902 |
p[0] = p[1]=
p[8] = p[9]= 0;
}
}
}
}else if(IS_DIRECT(mb_type)){ |
| e6287f07 |
ff_h264_pred_direct_motion(h, sl, &mb_type); |
| 3176217c |
dct8x8_allowed &= h->ps.sps->direct_8x8_inference_flag; |
| e1e94902 |
}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)){ |
| 95eb35f3 |
for (list = 0; list < sl->list_count; list++) { |
| e1e94902 |
unsigned int val;
if(IS_DIR(mb_type, 0, list)){ |
| 797ba4d5 |
unsigned rc = sl->ref_count[list] << MB_MBAFF(sl);
if (rc == 1) { |
| e1e94902 |
val= 0; |
| 797ba4d5 |
} else if (rc == 2) { |
| f42485db |
val= get_bits1(&sl->gb)^1; |
| e1e94902 |
}else{ |
| f42485db |
val= get_ue_golomb_31(&sl->gb); |
| 797ba4d5 |
if (val >= rc) { |
| 2c541554 |
av_log(h->avctx, AV_LOG_ERROR, "ref %u overflow\n", val); |
| e1e94902 |
return -1;
}
} |
| e6287f07 |
fill_rectangle(&sl->ref_cache[list][ scan8[0] ], 4, 4, 8, val, 1); |
| 8897b247 |
} |
| e1e94902 |
} |
| 95eb35f3 |
for (list = 0; list < sl->list_count; list++) { |
| e1e94902 |
if(IS_DIR(mb_type, 0, list)){ |
| e6287f07 |
pred_motion(h, sl, 0, 4, list, sl->ref_cache[list][ scan8[0] ], &mx, &my); |
| f42485db |
mx += get_se_golomb(&sl->gb);
my += get_se_golomb(&sl->gb); |
| 6a85dfc8 |
ff_tlog(h->avctx, "final mv:%d %d\n", mx, my); |
| e1e94902 | |
| e6287f07 |
fill_rectangle(sl->mv_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(mx,my), 4); |
| 8897b247 |
} |
| e1e94902 |
}
}
else if(IS_16X8(mb_type)){ |
| 95eb35f3 |
for (list = 0; list < sl->list_count; list++) { |
| e1e94902 |
for(i=0; i<2; i++){
unsigned int val;
if(IS_DIR(mb_type, i, list)){ |
| 797ba4d5 |
unsigned rc = sl->ref_count[list] << MB_MBAFF(sl);
if (rc == 1) { |
| e1e94902 |
val= 0; |
| 797ba4d5 |
} else if (rc == 2) { |
| f42485db |
val= get_bits1(&sl->gb)^1; |
| e1e94902 |
}else{ |
| f42485db |
val= get_ue_golomb_31(&sl->gb); |
| 797ba4d5 |
if (val >= rc) { |
| 2c541554 |
av_log(h->avctx, AV_LOG_ERROR, "ref %u overflow\n", val); |
| e1e94902 |
return -1;
}
}
}else
val= LIST_NOT_USED&0xFF; |
| e6287f07 |
fill_rectangle(&sl->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, val, 1); |
| e1e94902 |
}
} |
| 95eb35f3 |
for (list = 0; list < sl->list_count; list++) { |
| e1e94902 |
for(i=0; i<2; i++){
unsigned int val;
if(IS_DIR(mb_type, i, list)){ |
| e6287f07 |
pred_16x8_motion(h, sl, 8*i, list, sl->ref_cache[list][scan8[0] + 16*i], &mx, &my); |
| f42485db |
mx += get_se_golomb(&sl->gb);
my += get_se_golomb(&sl->gb); |
| 6a85dfc8 |
ff_tlog(h->avctx, "final mv:%d %d\n", mx, my); |
| e1e94902 |
val= pack16to32(mx,my);
}else
val=0; |
| e6287f07 |
fill_rectangle(sl->mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, val, 4); |
| e1e94902 |
}
}
}else{ |
| 506ffa79 |
av_assert2(IS_8X16(mb_type)); |
| 95eb35f3 |
for (list = 0; list < sl->list_count; list++) { |
| e1e94902 |
for(i=0; i<2; i++){
unsigned int val;
if(IS_DIR(mb_type, i, list)){ //FIXME optimize |
| 797ba4d5 |
unsigned rc = sl->ref_count[list] << MB_MBAFF(sl);
if (rc == 1) { |
| e1e94902 |
val= 0; |
| 797ba4d5 |
} else if (rc == 2) { |
| f42485db |
val= get_bits1(&sl->gb)^1; |
| e1e94902 |
}else{ |
| f42485db |
val= get_ue_golomb_31(&sl->gb); |
| 797ba4d5 |
if (val >= rc) { |
| 2c541554 |
av_log(h->avctx, AV_LOG_ERROR, "ref %u overflow\n", val); |
| e1e94902 |
return -1;
}
}
}else
val= LIST_NOT_USED&0xFF; |
| e6287f07 |
fill_rectangle(&sl->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, val, 1); |
| e1e94902 |
}
} |
| 95eb35f3 |
for (list = 0; list < sl->list_count; list++) { |
| e1e94902 |
for(i=0; i<2; i++){
unsigned int val;
if(IS_DIR(mb_type, i, list)){ |
| e6287f07 |
pred_8x16_motion(h, sl, i*4, list, sl->ref_cache[list][ scan8[0] + 2*i ], &mx, &my); |
| f42485db |
mx += get_se_golomb(&sl->gb);
my += get_se_golomb(&sl->gb); |
| 6a85dfc8 |
ff_tlog(h->avctx, "final mv:%d %d\n", mx, my); |
| e1e94902 |
val= pack16to32(mx,my);
}else
val=0; |
| e6287f07 |
fill_rectangle(sl->mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, val, 4); |
| e1e94902 |
}
}
}
}
if(IS_INTER(mb_type)) |
| e6287f07 |
write_back_motion(h, sl, mb_type); |
| e1e94902 |
if(!IS_INTRA16x16(mb_type)){ |
| f42485db |
cbp= get_ue_golomb(&sl->gb); |
| e1e94902 | |
| c90b9442 |
if(decode_chroma){
if(cbp > 47){ |
| d4d9068c |
av_log(h->avctx, AV_LOG_ERROR, "cbp too large (%u) at %d %d\n", cbp, sl->mb_x, sl->mb_y); |
| c90b9442 |
return -1;
} |
| a7da517f |
if (IS_INTRA4x4(mb_type))
cbp = ff_h264_golomb_to_intra4x4_cbp[cbp];
else
cbp = ff_h264_golomb_to_inter_cbp[cbp]; |
| e1e94902 |
}else{ |
| c90b9442 |
if(cbp > 15){ |
| d4d9068c |
av_log(h->avctx, AV_LOG_ERROR, "cbp too large (%u) at %d %d\n", cbp, sl->mb_x, sl->mb_y); |
| c90b9442 |
return -1;
} |
| e1e94902 |
if(IS_INTRA4x4(mb_type)) cbp= golomb_to_intra4x4_cbp_gray[cbp];
else cbp= golomb_to_inter_cbp_gray[cbp];
} |
| 8a03a60b |
} else {
if (!decode_chroma && cbp>15) { |
| b7fe35c9 |
av_log(h->avctx, AV_LOG_ERROR, "gray chroma\n"); |
| 8a03a60b |
return AVERROR_INVALIDDATA;
} |
| e1e94902 |
}
if(dct8x8_allowed && (cbp&15) && !IS_INTRA(mb_type)){ |
| f42485db |
mb_type |= MB_TYPE_8x8DCT*get_bits1(&sl->gb); |
| e1e94902 |
} |
| e7226984 |
sl->cbp= |
| 439d6b1d |
h->cbp_table[mb_xy]= cbp; |
| 759001c5 |
h->cur_pic.mb_type[mb_xy] = mb_type; |
| e1e94902 |
if(cbp || IS_INTRA16x16(mb_type)){ |
| 231a6df9 |
int i4x4, i8x8, chroma_idx; |
| e1e94902 |
int dquant; |
| c90b9442 |
int ret; |
| f42485db |
GetBitContext *gb = &sl->gb; |
| 19fb234e |
const uint8_t *scan, *scan8x8; |
| 3176217c |
const int max_qp = 51 + 6 * (h->ps.sps->bit_depth_luma - 8); |
| e1e94902 |
if(IS_INTERLACED(mb_type)){ |
| d231e84b |
scan8x8 = sl->qscale ? h->field_scan8x8_cavlc : h->field_scan8x8_cavlc_q0;
scan = sl->qscale ? h->field_scan : h->field_scan_q0; |
| e1e94902 |
}else{ |
| d231e84b |
scan8x8 = sl->qscale ? h->zigzag_scan8x8_cavlc : h->zigzag_scan8x8_cavlc_q0;
scan = sl->qscale ? h->zigzag_scan : h->zigzag_scan_q0; |
| e1e94902 |
}
|
| f42485db |
dquant= get_se_golomb(&sl->gb); |
| e1e94902 | |
| d231e84b |
sl->qscale += dquant; |
| 1f445f54 | |
| d231e84b |
if (((unsigned)sl->qscale) > max_qp){
if (sl->qscale < 0) sl->qscale += max_qp + 1;
else sl->qscale -= max_qp+1;
if (((unsigned)sl->qscale) > max_qp){ |
| d4d9068c |
av_log(h->avctx, AV_LOG_ERROR, "dquant out of range (%d) at %d %d\n", dquant, sl->mb_x, sl->mb_y); |
| 1f445f54 |
return -1;
} |
| e1e94902 |
}
|
| d231e84b |
sl->chroma_qp[0] = get_chroma_qp(h, 0, sl->qscale);
sl->chroma_qp[1] = get_chroma_qp(h, 1, sl->qscale); |
| e1e94902 | |
| d231e84b |
if ((ret = decode_luma_residual(h, sl, gb, scan, scan8x8, pixel_shift, mb_type, cbp, 0)) < 0 ) { |
| c90b9442 |
return -1;
}
h->cbp_table[mb_xy] |= ret << 12; |
| 23e85be5 |
if (CHROMA444(h)) { |
| d231e84b |
if (decode_luma_residual(h, sl, gb, scan, scan8x8, pixel_shift, mb_type, cbp, 1) < 0 ) { |
| c90b9442 |
return -1;
} |
| d231e84b |
if (decode_luma_residual(h, sl, gb, scan, scan8x8, pixel_shift, mb_type, cbp, 2) < 0 ) { |
| c90b9442 |
return -1;
}
} else { |
| 1534ef87 |
const int num_c8x8 = h->ps.sps->chroma_format_idc; |
| 231a6df9 | |
| c90b9442 |
if(cbp&0x30){
for(chroma_idx=0; chroma_idx<2; chroma_idx++) |
| bf03a878 |
if (decode_residual(h, sl, gb, sl->mb + ((256 + 16*16*chroma_idx) << pixel_shift), |
| 9809371a |
CHROMA_DC_BLOCK_INDEX + chroma_idx,
CHROMA422(h) ? ff_h264_chroma422_dc_scan : ff_h264_chroma_dc_scan,
NULL, 4 * num_c8x8) < 0) { |
| c90b9442 |
return -1;
}
} |
| e1e94902 | |
| c90b9442 |
if(cbp&0x20){
for(chroma_idx=0; chroma_idx<2; chroma_idx++){ |
| 3176217c |
const uint32_t *qmul = h->ps.pps->dequant4_coeff[chroma_idx+1+(IS_INTRA( mb_type ) ? 0:3)][sl->chroma_qp[chroma_idx]]; |
| bf03a878 |
int16_t *mb = sl->mb + (16*(16 + 16*chroma_idx) << pixel_shift); |
| 4fb1221e |
for (i8x8 = 0; i8x8<num_c8x8; i8x8++) {
for (i4x4 = 0; i4x4 < 4; i4x4++) {
const int index = 16 + 16*chroma_idx + 8*i8x8 + i4x4; |
| f69574cf |
if (decode_residual(h, sl, gb, mb, index, scan + 1, qmul, 15) < 0) |
| 231a6df9 |
return -1; |
| 4fb1221e |
mb += 16 << pixel_shift; |
| e1e94902 |
}
}
}
}else{ |
| f69574cf |
fill_rectangle(&sl->non_zero_count_cache[scan8[16]], 4, 4, 8, 0, 1);
fill_rectangle(&sl->non_zero_count_cache[scan8[32]], 4, 4, 8, 0, 1); |
| e1e94902 |
}
}
}else{ |
| f69574cf |
fill_rectangle(&sl->non_zero_count_cache[scan8[ 0]], 4, 4, 8, 0, 1);
fill_rectangle(&sl->non_zero_count_cache[scan8[16]], 4, 4, 8, 0, 1);
fill_rectangle(&sl->non_zero_count_cache[scan8[32]], 4, 4, 8, 0, 1); |
| e1e94902 |
} |
| d231e84b |
h->cur_pic.qscale_table[mb_xy] = sl->qscale; |
| f69574cf |
write_back_non_zero_count(h, sl); |
| e1e94902 |
return 0;
} |