diff options
Diffstat (limited to 'ffmpeg/libavcodec/h264_cavlc.c')
| -rw-r--r-- | ffmpeg/libavcodec/h264_cavlc.c | 1162 |
1 files changed, 1162 insertions, 0 deletions
diff --git a/ffmpeg/libavcodec/h264_cavlc.c b/ffmpeg/libavcodec/h264_cavlc.c new file mode 100644 index 0000000..63f8d78 --- /dev/null +++ b/ffmpeg/libavcodec/h264_cavlc.c @@ -0,0 +1,1162 @@ +/* + * 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(h) 0 +#define UNCHECKED_BITSTREAM_READER 1 + +#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" +#include "libavutil/avassert.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 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, +}; + +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 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 }, +}; + +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 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; + +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 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; + +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]; + +#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 + +/** + * Get 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->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; + 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){ + 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; + 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); + + 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); + + 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. + */ + av_assert0(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<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); + } + + 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; +} + +/** + * Decode 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, int16_t *block, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff){ + 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(max_coeff <= 8){ + 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); + total_coeff= coeff_token>>2; + }else{ + if(n >= LUMA_DC_BLOCK_INDEX){ + total_coeff= pred_non_zero_count(h, (n - LUMA_DC_BLOCK_INDEX)*16); + 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->avctx, AV_LOG_ERROR, "corrupted macroblock %d %d (total_coeff=%d)\n", h->mb_x, h->mb_y, total_coeff); + return -1; + } + + trailing_ones= coeff_token&3; + tprintf(h->avctx, "trailing:%d, total:%d\n", trailing_ones, total_coeff); + av_assert2(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; + if(prefix>=16){ + if(prefix > 25+3){ + av_log(h->avctx, AV_LOG_ERROR, "Invalid level prefix\n"); + return -1; + } + level_code += (1<<(prefix-3))-4096; + } + level_code += get_bits(gb, prefix-3); //part + } + + 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 (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 { + 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->avctx, AV_LOG_ERROR, "negative number of zero coeffs at %d %d\n", h->mb_x, h->mb_y); + return -1; + } + + return 0; +} + +static av_always_inline int decode_luma_residual(H264Context *h, GetBitContext *gb, const uint8_t *scan, const uint8_t *scan8x8, int pixel_shift, int mb_type, int cbp, int p){ + int i4x4, i8x8; + int qscale = p == 0 ? h->qscale : h->chroma_qp[p-1]; + if(IS_INTRA16x16(mb_type)){ + AV_ZERO128(h->mb_luma_dc[p]+0); + AV_ZERO128(h->mb_luma_dc[p]+8); + AV_ZERO128(h->mb_luma_dc[p]+16); + AV_ZERO128(h->mb_luma_dc[p]+24); + if( decode_residual(h, h->intra_gb_ptr, h->mb_luma_dc[p], LUMA_DC_BLOCK_INDEX+p, scan, NULL, 16) < 0){ + return -1; //FIXME continue if partitioned and other return -1 too + } + + av_assert2((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 + p*16; + if( decode_residual(h, h->intra_gb_ptr, h->mb + (16*index << pixel_shift), + index, scan + 1, h->dequant4_coeff[p][qscale], 15) < 0 ){ + return -1; + } + } + } + return 0xf; + }else{ + fill_rectangle(&h->non_zero_count_cache[scan8[p*16]], 4, 4, 8, 0, 1); + 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)){ + int16_t *buf = &h->mb[64*i8x8+256*p << pixel_shift]; + uint8_t *nnz; + for(i4x4=0; i4x4<4; i4x4++){ + const int index= i4x4 + 4*i8x8 + p*16; + if( decode_residual(h, gb, buf, index, scan8x8+16*i4x4, + h->dequant8_coeff[cqm][qscale], 16) < 0 ) + return -1; + } + nnz= &h->non_zero_count_cache[ scan8[4*i8x8+p*16] ]; + 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; + if( decode_residual(h, gb, h->mb + (16*index << pixel_shift), index, + scan, h->dequant4_coeff[cqm][qscale], 16) < 0 ){ + return -1; + } + new_cbp |= h->non_zero_count_cache[ scan8[index] ] << i8x8; + } + } + }else{ + uint8_t * const nnz= &h->non_zero_count_cache[ scan8[4*i8x8+p*16] ]; + nnz[0] = nnz[1] = nnz[8] = nnz[9] = 0; + } + } + return new_cbp; + } +} + +int ff_h264_decode_mb_cavlc(H264Context *h){ + int mb_xy; + int partition_count; + unsigned int mb_type, cbp; + int dct8x8_allowed= h->pps.transform_8x8_mode; + int decode_chroma = h->sps.chroma_format_idc == 1 || h->sps.chroma_format_idc == 2; + const int pixel_shift = h->pixel_shift; + unsigned local_ref_count[2]; + + mb_xy = h->mb_xy = h->mb_x + h->mb_y*h->mb_stride; + + tprintf(h->avctx, "pic:%d mb:%d/%d\n", h->frame_num, h->mb_x, h->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(h->mb_skip_run==-1) + h->mb_skip_run= get_ue_golomb(&h->gb); + + if (h->mb_skip_run--) { + if(FRAME_MBAFF(h) && (h->mb_y&1) == 0){ + if(h->mb_skip_run==0) + h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&h->gb); + } + decode_mb_skip(h); + return 0; + } + } + if (FRAME_MBAFF(h)) { + if( (h->mb_y&1) == 0 ) + h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&h->gb); + } + + h->prev_mb_skipped= 0; + + mb_type= get_ue_golomb(&h->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{ + av_assert2(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->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), h->mb_x, h->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(h)) + mb_type |= MB_TYPE_INTERLACED; + + h->slice_table[ mb_xy ]= h->slice_num; + + if(IS_INTRA_PCM(mb_type)){ + const int mb_size = ff_h264_mb_sizes[h->sps.chroma_format_idc] * + h->sps.bit_depth_luma; + + // We assume these blocks are very rare so we do not optimize it. + h->intra_pcm_ptr = align_get_bits(&h->gb); + skip_bits_long(&h->gb, mb_size); + + // In deblocking, the quantizer is 0 + h->cur_pic.qscale_table[mb_xy] = 0; + // All coeffs are present + memset(h->non_zero_count[mb_xy], 16, 48); + + h->cur_pic.mb_type[mb_xy] = mb_type; + return 0; + } + + local_ref_count[0] = h->ref_count[0] << MB_MBAFF(h); + local_ref_count[1] = h->ref_count[1] << MB_MBAFF(h); + + 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(&h->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(&h->gb)){ + const int rem_mode= get_bits(&h->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; + } + 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, 0); + if(h->intra16x16_pred_mode < 0) + return -1; + } + if(decode_chroma){ + pred_mode= ff_h264_check_intra_pred_mode(h, get_ue_golomb_31(&h->gb), 1); + 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(&h->gb); + if(h->sub_mb_type[i] >=13){ + av_log(h->avctx, AV_LOG_ERROR, "B sub_mb_type %u out of range at %d %d\n", h->sub_mb_type[i], h->mb_x, h->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{ + av_assert2(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(&h->gb); + if(h->sub_mb_type[i] >=4){ + av_log(h->avctx, AV_LOG_ERROR, "P sub_mb_type %u out of range at %d %d\n", h->sub_mb_type[i], h->mb_x, h->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 : local_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(&h->gb)^1; + }else{ + tmp= get_ue_golomb_31(&h->gb); + if(tmp>=ref_count){ + av_log(h->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(&h->gb); + my += get_se_golomb(&h->gb); + tprintf(h->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(local_ref_count[list]==1){ + val= 0; + }else if(local_ref_count[list]==2){ + val= get_bits1(&h->gb)^1; + }else{ + val= get_ue_golomb_31(&h->gb); + if(val >= local_ref_count[list]){ + av_log(h->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(&h->gb); + my += get_se_golomb(&h->gb); + tprintf(h->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(local_ref_count[list] == 1){ + val= 0; + }else if(local_ref_count[list] == 2){ + val= get_bits1(&h->gb)^1; + }else{ + val= get_ue_golomb_31(&h->gb); + if(val >= local_ref_count[list]){ + av_log(h->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(&h->gb); + my += get_se_golomb(&h->gb); + tprintf(h->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{ + av_assert2(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(local_ref_count[list]==1){ + val= 0; + }else if(local_ref_count[list]==2){ + val= get_bits1(&h->gb)^1; + }else{ + val= get_ue_golomb_31(&h->gb); + if(val >= local_ref_count[list]){ + av_log(h->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(&h->gb); + my += get_se_golomb(&h->gb); + tprintf(h->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(&h->gb); + + if(decode_chroma){ + if(cbp > 47){ + av_log(h->avctx, AV_LOG_ERROR, "cbp too large (%u) at %d %d\n", cbp, h->mb_x, h->mb_y); + return -1; + } + if(IS_INTRA4x4(mb_type)) cbp= golomb_to_intra4x4_cbp[cbp]; + else cbp= golomb_to_inter_cbp [cbp]; + }else{ + if(cbp > 15){ + av_log(h->avctx, AV_LOG_ERROR, "cbp too large (%u) at %d %d\n", cbp, h->mb_x, h->mb_y); + return -1; + } + if(IS_INTRA4x4(mb_type)) cbp= golomb_to_intra4x4_cbp_gray[cbp]; + else cbp= golomb_to_inter_cbp_gray[cbp]; + } + } else { + if (!decode_chroma && cbp>15) { + av_log(h->avctx, AV_LOG_ERROR, "gray chroma\n"); + return AVERROR_INVALIDDATA; + } + } + + if(dct8x8_allowed && (cbp&15) && !IS_INTRA(mb_type)){ + mb_type |= MB_TYPE_8x8DCT*get_bits1(&h->gb); + } + h->cbp= + h->cbp_table[mb_xy]= cbp; + h->cur_pic.mb_type[mb_xy] = mb_type; + + if(cbp || IS_INTRA16x16(mb_type)){ + int i4x4, i8x8, chroma_idx; + int dquant; + int ret; + 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= h->qscale ? h->field_scan8x8_cavlc : h->field_scan8x8_cavlc_q0; + scan= h->qscale ? h->field_scan : h->field_scan_q0; + }else{ + scan8x8= h->qscale ? h->zigzag_scan8x8_cavlc : h->zigzag_scan8x8_cavlc_q0; + scan= h->qscale ? h->zigzag_scan : h->zigzag_scan_q0; + } + + dquant= get_se_golomb(&h->gb); + + h->qscale += dquant; + + if(((unsigned)h->qscale) > max_qp){ + if(h->qscale<0) h->qscale+= max_qp+1; + else h->qscale-= max_qp+1; + if(((unsigned)h->qscale) > max_qp){ + av_log(h->avctx, AV_LOG_ERROR, "dquant out of range (%d) at %d %d\n", dquant, h->mb_x, h->mb_y); + return -1; + } + } + + h->chroma_qp[0]= get_chroma_qp(h, 0, h->qscale); + h->chroma_qp[1]= get_chroma_qp(h, 1, h->qscale); + + if( (ret = decode_luma_residual(h, gb, scan, scan8x8, pixel_shift, mb_type, cbp, 0)) < 0 ){ + return -1; + } + h->cbp_table[mb_xy] |= ret << 12; + if(CHROMA444){ + if( decode_luma_residual(h, gb, scan, scan8x8, pixel_shift, mb_type, cbp, 1) < 0 ){ + return -1; + } + if( decode_luma_residual(h, gb, scan, scan8x8, pixel_shift, mb_type, cbp, 2) < 0 ){ + return -1; + } + } else { + const int num_c8x8 = h->sps.chroma_format_idc; + + if(cbp&0x30){ + for(chroma_idx=0; chroma_idx<2; chroma_idx++) + if (decode_residual(h, gb, h->mb + ((256 + 16*16*chroma_idx) << pixel_shift), + CHROMA_DC_BLOCK_INDEX+chroma_idx, + CHROMA422 ? chroma422_dc_scan : chroma_dc_scan, + NULL, 4*num_c8x8) < 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]]; + int16_t *mb = h->mb + (16*(16 + 16*chroma_idx) << pixel_shift); + for (i8x8=0; i8x8<num_c8x8; i8x8++) { + for (i4x4=0; i4x4<4; i4x4++) { + const int index= 16 + 16*chroma_idx + 8*i8x8 + i4x4; + if (decode_residual(h, gb, mb, index, scan + 1, qmul, 15) < 0) + return -1; + mb += 16<<pixel_shift; + } + } + } + }else{ + fill_rectangle(&h->non_zero_count_cache[scan8[16]], 4, 4, 8, 0, 1); + fill_rectangle(&h->non_zero_count_cache[scan8[32]], 4, 4, 8, 0, 1); + } + } + }else{ + fill_rectangle(&h->non_zero_count_cache[scan8[ 0]], 4, 4, 8, 0, 1); + fill_rectangle(&h->non_zero_count_cache[scan8[16]], 4, 4, 8, 0, 1); + fill_rectangle(&h->non_zero_count_cache[scan8[32]], 4, 4, 8, 0, 1); + } + h->cur_pic.qscale_table[mb_xy] = h->qscale; + write_back_non_zero_count(h); + + return 0; +} |