mirror of https://github.com/FFmpeg/FFmpeg.git
Diego Biurrun
13 years ago
parent
eb727387fd
commit
2f4b476e04
6 changed files with 734 additions and 690 deletions
@ -0,0 +1,692 @@ |
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/*
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* MSMPEG4 encoder backend |
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* Copyright (c) 2001 Fabrice Bellard |
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* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> |
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* |
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* msmpeg4v1 & v2 stuff by Michael Niedermayer <michaelni@gmx.at> |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/**
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* @file |
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* MSMPEG4 encoder backend |
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*/ |
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#include <stdint.h> |
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#include <string.h> |
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#include "libavutil/avutil.h" |
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#include "libavutil/mem.h" |
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#include "mpegvideo.h" |
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#include "msmpeg4.h" |
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#include "h263.h" |
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#include "mpeg4video.h" |
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#include "msmpeg4.h" |
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#include "msmpeg4data.h" |
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#include "put_bits.h" |
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#include "rl.h" |
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#include "vc1data.h" |
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static uint8_t rl_length[NB_RL_TABLES][MAX_LEVEL+1][MAX_RUN+1][2]; |
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/* build the table which associate a (x,y) motion vector to a vlc */ |
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static void init_mv_table(MVTable *tab) |
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{ |
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int i, x, y; |
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tab->table_mv_index = av_malloc(sizeof(uint16_t) * 4096); |
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/* mark all entries as not used */ |
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for(i=0;i<4096;i++) |
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tab->table_mv_index[i] = tab->n; |
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for(i=0;i<tab->n;i++) { |
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x = tab->table_mvx[i]; |
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y = tab->table_mvy[i]; |
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tab->table_mv_index[(x << 6) | y] = i; |
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} |
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} |
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void ff_msmpeg4_code012(PutBitContext *pb, int n) |
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{ |
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if (n == 0) { |
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put_bits(pb, 1, 0); |
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} else { |
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put_bits(pb, 1, 1); |
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put_bits(pb, 1, (n >= 2)); |
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} |
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} |
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static int get_size_of_code(MpegEncContext * s, RLTable *rl, int last, int run, int level, int intra){ |
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int size=0; |
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int code; |
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int run_diff= intra ? 0 : 1; |
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code = get_rl_index(rl, last, run, level); |
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size+= rl->table_vlc[code][1]; |
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if (code == rl->n) { |
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int level1, run1; |
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level1 = level - rl->max_level[last][run]; |
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if (level1 < 1) |
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goto esc2; |
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code = get_rl_index(rl, last, run, level1); |
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if (code == rl->n) { |
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esc2: |
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size++; |
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if (level > MAX_LEVEL) |
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goto esc3; |
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run1 = run - rl->max_run[last][level] - run_diff; |
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if (run1 < 0) |
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goto esc3; |
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code = get_rl_index(rl, last, run1, level); |
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if (code == rl->n) { |
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esc3: |
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/* third escape */ |
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size+=1+1+6+8; |
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} else { |
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/* second escape */ |
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size+= 1+1+ rl->table_vlc[code][1]; |
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} |
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} else { |
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/* first escape */ |
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size+= 1+1+ rl->table_vlc[code][1]; |
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} |
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} else { |
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size++; |
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} |
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return size; |
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} |
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av_cold void ff_msmpeg4_encode_init(MpegEncContext *s) |
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{ |
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static int init_done=0; |
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int i; |
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ff_msmpeg4_common_init(s); |
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if(s->msmpeg4_version>=4){ |
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s->min_qcoeff= -255; |
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s->max_qcoeff= 255; |
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} |
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if (!init_done) { |
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/* init various encoding tables */ |
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init_done = 1; |
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init_mv_table(&ff_mv_tables[0]); |
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init_mv_table(&ff_mv_tables[1]); |
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for(i=0;i<NB_RL_TABLES;i++) |
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ff_init_rl(&ff_rl_table[i], ff_static_rl_table_store[i]); |
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for(i=0; i<NB_RL_TABLES; i++){ |
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int level; |
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for (level = 1; level <= MAX_LEVEL; level++) { |
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int run; |
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for(run=0; run<=MAX_RUN; run++){ |
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int last; |
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for(last=0; last<2; last++){ |
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rl_length[i][level][run][last]= get_size_of_code(s, &ff_rl_table[ i], last, run, level, 0); |
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} |
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} |
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} |
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} |
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} |
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} |
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static void find_best_tables(MpegEncContext * s) |
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{ |
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int i; |
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int best =-1, best_size =9999999; |
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int chroma_best=-1, best_chroma_size=9999999; |
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for(i=0; i<3; i++){ |
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int level; |
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int chroma_size=0; |
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int size=0; |
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if(i>0){// ;)
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size++; |
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chroma_size++; |
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} |
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for(level=0; level<=MAX_LEVEL; level++){ |
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int run; |
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for(run=0; run<=MAX_RUN; run++){ |
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int last; |
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const int last_size= size + chroma_size; |
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for(last=0; last<2; last++){ |
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int inter_count = s->ac_stats[0][0][level][run][last] + s->ac_stats[0][1][level][run][last]; |
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int intra_luma_count = s->ac_stats[1][0][level][run][last]; |
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int intra_chroma_count= s->ac_stats[1][1][level][run][last]; |
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if(s->pict_type==AV_PICTURE_TYPE_I){ |
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size += intra_luma_count *rl_length[i ][level][run][last]; |
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chroma_size+= intra_chroma_count*rl_length[i+3][level][run][last]; |
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}else{ |
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size+= intra_luma_count *rl_length[i ][level][run][last] |
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+intra_chroma_count*rl_length[i+3][level][run][last] |
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+inter_count *rl_length[i+3][level][run][last]; |
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} |
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} |
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if(last_size == size+chroma_size) break; |
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} |
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} |
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if(size<best_size){ |
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best_size= size; |
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best= i; |
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} |
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if(chroma_size<best_chroma_size){ |
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best_chroma_size= chroma_size; |
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chroma_best= i; |
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} |
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} |
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// printf("type:%d, best:%d, qp:%d, var:%d, mcvar:%d, size:%d //\n",
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// s->pict_type, best, s->qscale, s->mb_var_sum, s->mc_mb_var_sum, best_size);
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if(s->pict_type==AV_PICTURE_TYPE_P) chroma_best= best; |
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memset(s->ac_stats, 0, sizeof(int)*(MAX_LEVEL+1)*(MAX_RUN+1)*2*2*2); |
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s->rl_table_index = best; |
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s->rl_chroma_table_index= chroma_best; |
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if(s->pict_type != s->last_non_b_pict_type){ |
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s->rl_table_index= 2; |
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if(s->pict_type==AV_PICTURE_TYPE_I) |
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s->rl_chroma_table_index= 1; |
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else |
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s->rl_chroma_table_index= 2; |
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} |
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} |
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/* write MSMPEG4 compatible frame header */ |
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void ff_msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number) |
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{ |
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find_best_tables(s); |
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avpriv_align_put_bits(&s->pb); |
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put_bits(&s->pb, 2, s->pict_type - 1); |
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put_bits(&s->pb, 5, s->qscale); |
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if(s->msmpeg4_version<=2){ |
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s->rl_table_index = 2; |
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s->rl_chroma_table_index = 2; |
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} |
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s->dc_table_index = 1; |
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s->mv_table_index = 1; /* only if P frame */ |
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s->use_skip_mb_code = 1; /* only if P frame */ |
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s->per_mb_rl_table = 0; |
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if(s->msmpeg4_version==4) |
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s->inter_intra_pred= (s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE && s->pict_type==AV_PICTURE_TYPE_P); |
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//printf("%d %d %d %d %d\n", s->pict_type, s->bit_rate, s->inter_intra_pred, s->width, s->height);
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if (s->pict_type == AV_PICTURE_TYPE_I) { |
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s->slice_height= s->mb_height/1; |
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put_bits(&s->pb, 5, 0x16 + s->mb_height/s->slice_height); |
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if(s->msmpeg4_version==4){ |
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ff_msmpeg4_encode_ext_header(s); |
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if(s->bit_rate>MBAC_BITRATE) |
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put_bits(&s->pb, 1, s->per_mb_rl_table); |
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} |
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if(s->msmpeg4_version>2){ |
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if(!s->per_mb_rl_table){ |
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ff_msmpeg4_code012(&s->pb, s->rl_chroma_table_index); |
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ff_msmpeg4_code012(&s->pb, s->rl_table_index); |
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} |
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put_bits(&s->pb, 1, s->dc_table_index); |
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} |
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} else { |
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put_bits(&s->pb, 1, s->use_skip_mb_code); |
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if(s->msmpeg4_version==4 && s->bit_rate>MBAC_BITRATE) |
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put_bits(&s->pb, 1, s->per_mb_rl_table); |
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if(s->msmpeg4_version>2){ |
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if(!s->per_mb_rl_table) |
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ff_msmpeg4_code012(&s->pb, s->rl_table_index); |
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put_bits(&s->pb, 1, s->dc_table_index); |
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put_bits(&s->pb, 1, s->mv_table_index); |
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} |
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} |
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s->esc3_level_length= 0; |
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s->esc3_run_length= 0; |
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} |
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void ff_msmpeg4_encode_ext_header(MpegEncContext * s) |
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{ |
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put_bits(&s->pb, 5, s->avctx->time_base.den / s->avctx->time_base.num); //yes 29.97 -> 29
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put_bits(&s->pb, 11, FFMIN(s->bit_rate/1024, 2047)); |
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if(s->msmpeg4_version>=3) |
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put_bits(&s->pb, 1, s->flipflop_rounding); |
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else |
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assert(s->flipflop_rounding==0); |
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} |
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void ff_msmpeg4_encode_motion(MpegEncContext * s, |
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int mx, int my) |
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{ |
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int code; |
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MVTable *mv; |
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/* modulo encoding */ |
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/* WARNING : you cannot reach all the MVs even with the modulo
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encoding. This is a somewhat strange compromise they took !!! */ |
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if (mx <= -64) |
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mx += 64; |
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else if (mx >= 64) |
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mx -= 64; |
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if (my <= -64) |
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my += 64; |
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else if (my >= 64) |
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my -= 64; |
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mx += 32; |
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my += 32; |
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#if 0 |
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if ((unsigned)mx >= 64 || |
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(unsigned)my >= 64) |
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av_log(s->avctx, AV_LOG_ERROR, "error mx=%d my=%d\n", mx, my); |
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#endif |
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mv = &ff_mv_tables[s->mv_table_index]; |
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code = mv->table_mv_index[(mx << 6) | my]; |
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put_bits(&s->pb, |
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mv->table_mv_bits[code], |
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mv->table_mv_code[code]); |
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if (code == mv->n) { |
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/* escape : code literally */ |
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put_bits(&s->pb, 6, mx); |
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put_bits(&s->pb, 6, my); |
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} |
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} |
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void ff_msmpeg4_handle_slices(MpegEncContext *s){ |
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if (s->mb_x == 0) { |
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if (s->slice_height && (s->mb_y % s->slice_height) == 0) { |
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if(s->msmpeg4_version < 4){ |
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ff_mpeg4_clean_buffers(s); |
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} |
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s->first_slice_line = 1; |
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} else { |
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s->first_slice_line = 0; |
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} |
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} |
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} |
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static void msmpeg4v2_encode_motion(MpegEncContext * s, int val) |
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{ |
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int range, bit_size, sign, code, bits; |
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if (val == 0) { |
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/* zero vector */ |
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code = 0; |
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put_bits(&s->pb, ff_mvtab[code][1], ff_mvtab[code][0]); |
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} else { |
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bit_size = s->f_code - 1; |
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range = 1 << bit_size; |
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if (val <= -64) |
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val += 64; |
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else if (val >= 64) |
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val -= 64; |
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if (val >= 0) { |
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sign = 0; |
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} else { |
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val = -val; |
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sign = 1; |
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} |
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val--; |
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code = (val >> bit_size) + 1; |
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bits = val & (range - 1); |
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put_bits(&s->pb, ff_mvtab[code][1] + 1, (ff_mvtab[code][0] << 1) | sign); |
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if (bit_size > 0) { |
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put_bits(&s->pb, bit_size, bits); |
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} |
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} |
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} |
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void ff_msmpeg4_encode_mb(MpegEncContext * s, |
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DCTELEM block[6][64], |
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int motion_x, int motion_y) |
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{ |
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int cbp, coded_cbp, i; |
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int pred_x, pred_y; |
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uint8_t *coded_block; |
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ff_msmpeg4_handle_slices(s); |
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if (!s->mb_intra) { |
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/* compute cbp */ |
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cbp = 0; |
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for (i = 0; i < 6; i++) { |
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if (s->block_last_index[i] >= 0) |
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cbp |= 1 << (5 - i); |
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} |
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if (s->use_skip_mb_code && (cbp | motion_x | motion_y) == 0) { |
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/* skip macroblock */ |
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put_bits(&s->pb, 1, 1); |
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s->last_bits++; |
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s->misc_bits++; |
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s->skip_count++; |
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return; |
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} |
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if (s->use_skip_mb_code) |
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put_bits(&s->pb, 1, 0); /* mb coded */ |
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if(s->msmpeg4_version<=2){ |
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put_bits(&s->pb, |
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ff_v2_mb_type[cbp&3][1], |
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ff_v2_mb_type[cbp&3][0]); |
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if((cbp&3) != 3) coded_cbp= cbp ^ 0x3C; |
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else coded_cbp= cbp; |
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put_bits(&s->pb, |
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ff_h263_cbpy_tab[coded_cbp>>2][1], |
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ff_h263_cbpy_tab[coded_cbp>>2][0]); |
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s->misc_bits += get_bits_diff(s); |
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ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y); |
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msmpeg4v2_encode_motion(s, motion_x - pred_x); |
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msmpeg4v2_encode_motion(s, motion_y - pred_y); |
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}else{ |
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put_bits(&s->pb, |
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ff_table_mb_non_intra[cbp + 64][1], |
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ff_table_mb_non_intra[cbp + 64][0]); |
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s->misc_bits += get_bits_diff(s); |
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/* motion vector */ |
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ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y); |
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ff_msmpeg4_encode_motion(s, motion_x - pred_x, |
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motion_y - pred_y); |
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} |
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s->mv_bits += get_bits_diff(s); |
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for (i = 0; i < 6; i++) { |
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ff_msmpeg4_encode_block(s, block[i], i); |
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} |
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s->p_tex_bits += get_bits_diff(s); |
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} else { |
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/* compute cbp */ |
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cbp = 0; |
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coded_cbp = 0; |
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for (i = 0; i < 6; i++) { |
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int val, pred; |
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val = (s->block_last_index[i] >= 1); |
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cbp |= val << (5 - i); |
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if (i < 4) { |
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/* predict value for close blocks only for luma */ |
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pred = ff_msmpeg4_coded_block_pred(s, i, &coded_block); |
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*coded_block = val; |
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val = val ^ pred; |
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} |
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coded_cbp |= val << (5 - i); |
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} |
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if(s->msmpeg4_version<=2){ |
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if (s->pict_type == AV_PICTURE_TYPE_I) { |
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put_bits(&s->pb, |
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ff_v2_intra_cbpc[cbp&3][1], ff_v2_intra_cbpc[cbp&3][0]); |
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} else { |
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if (s->use_skip_mb_code) |
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put_bits(&s->pb, 1, 0); /* mb coded */ |
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put_bits(&s->pb, |
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ff_v2_mb_type[(cbp&3) + 4][1], |
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ff_v2_mb_type[(cbp&3) + 4][0]); |
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} |
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put_bits(&s->pb, 1, 0); /* no AC prediction yet */ |
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put_bits(&s->pb, |
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ff_h263_cbpy_tab[cbp>>2][1], |
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ff_h263_cbpy_tab[cbp>>2][0]); |
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}else{ |
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if (s->pict_type == AV_PICTURE_TYPE_I) { |
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put_bits(&s->pb, |
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ff_msmp4_mb_i_table[coded_cbp][1], ff_msmp4_mb_i_table[coded_cbp][0]); |
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} else { |
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if (s->use_skip_mb_code) |
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put_bits(&s->pb, 1, 0); /* mb coded */ |
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put_bits(&s->pb, |
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ff_table_mb_non_intra[cbp][1], |
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ff_table_mb_non_intra[cbp][0]); |
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} |
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put_bits(&s->pb, 1, 0); /* no AC prediction yet */ |
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if(s->inter_intra_pred){ |
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s->h263_aic_dir=0; |
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put_bits(&s->pb, ff_table_inter_intra[s->h263_aic_dir][1], ff_table_inter_intra[s->h263_aic_dir][0]); |
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} |
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} |
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s->misc_bits += get_bits_diff(s); |
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for (i = 0; i < 6; i++) { |
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ff_msmpeg4_encode_block(s, block[i], i); |
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} |
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s->i_tex_bits += get_bits_diff(s); |
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s->i_count++; |
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} |
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} |
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|
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static void msmpeg4_encode_dc(MpegEncContext * s, int level, int n, int *dir_ptr) |
||||
{ |
||||
int sign, code; |
||||
int pred, extquant; |
||||
int extrabits = 0; |
||||
|
||||
int16_t *dc_val; |
||||
pred = ff_msmpeg4_pred_dc(s, n, &dc_val, dir_ptr); |
||||
|
||||
/* update predictor */ |
||||
if (n < 4) { |
||||
*dc_val = level * s->y_dc_scale; |
||||
} else { |
||||
*dc_val = level * s->c_dc_scale; |
||||
} |
||||
|
||||
/* do the prediction */ |
||||
level -= pred; |
||||
|
||||
if(s->msmpeg4_version<=2){ |
||||
if (n < 4) { |
||||
put_bits(&s->pb, |
||||
ff_v2_dc_lum_table[level + 256][1], |
||||
ff_v2_dc_lum_table[level + 256][0]); |
||||
}else{ |
||||
put_bits(&s->pb, |
||||
ff_v2_dc_chroma_table[level + 256][1], |
||||
ff_v2_dc_chroma_table[level + 256][0]); |
||||
} |
||||
}else{ |
||||
sign = 0; |
||||
if (level < 0) { |
||||
level = -level; |
||||
sign = 1; |
||||
} |
||||
code = level; |
||||
if (code > DC_MAX) |
||||
code = DC_MAX; |
||||
else if( s->msmpeg4_version>=6 ) { |
||||
if( s->qscale == 1 ) { |
||||
extquant = (level + 3) & 0x3; |
||||
code = ((level+3)>>2); |
||||
} else if( s->qscale == 2 ) { |
||||
extquant = (level + 1) & 0x1; |
||||
code = ((level+1)>>1); |
||||
} |
||||
} |
||||
|
||||
if (s->dc_table_index == 0) { |
||||
if (n < 4) { |
||||
put_bits(&s->pb, ff_table0_dc_lum[code][1], ff_table0_dc_lum[code][0]); |
||||
} else { |
||||
put_bits(&s->pb, ff_table0_dc_chroma[code][1], ff_table0_dc_chroma[code][0]); |
||||
} |
||||
} else { |
||||
if (n < 4) { |
||||
put_bits(&s->pb, ff_table1_dc_lum[code][1], ff_table1_dc_lum[code][0]); |
||||
} else { |
||||
put_bits(&s->pb, ff_table1_dc_chroma[code][1], ff_table1_dc_chroma[code][0]); |
||||
} |
||||
} |
||||
|
||||
if(s->msmpeg4_version>=6 && s->qscale<=2) |
||||
extrabits = 3 - s->qscale; |
||||
|
||||
if (code == DC_MAX) |
||||
put_bits(&s->pb, 8 + extrabits, level); |
||||
else if(extrabits > 0)//== VC1 && s->qscale<=2
|
||||
put_bits(&s->pb, extrabits, extquant); |
||||
|
||||
if (level != 0) { |
||||
put_bits(&s->pb, 1, sign); |
||||
} |
||||
} |
||||
} |
||||
|
||||
/* Encoding of a block. Very similar to MPEG4 except for a different
|
||||
escape coding (same as H263) and more vlc tables. |
||||
*/ |
||||
void ff_msmpeg4_encode_block(MpegEncContext * s, DCTELEM * block, int n) |
||||
{ |
||||
int level, run, last, i, j, last_index; |
||||
int last_non_zero, sign, slevel; |
||||
int code, run_diff, dc_pred_dir; |
||||
const RLTable *rl; |
||||
const uint8_t *scantable; |
||||
|
||||
if (s->mb_intra) { |
||||
msmpeg4_encode_dc(s, block[0], n, &dc_pred_dir); |
||||
i = 1; |
||||
if (n < 4) { |
||||
rl = &ff_rl_table[s->rl_table_index]; |
||||
} else { |
||||
rl = &ff_rl_table[3 + s->rl_chroma_table_index]; |
||||
} |
||||
run_diff = s->msmpeg4_version>=4; |
||||
scantable= s->intra_scantable.permutated; |
||||
} else { |
||||
i = 0; |
||||
rl = &ff_rl_table[3 + s->rl_table_index]; |
||||
if(s->msmpeg4_version<=2) |
||||
run_diff = 0; |
||||
else |
||||
run_diff = 1; |
||||
scantable= s->inter_scantable.permutated; |
||||
} |
||||
|
||||
/* recalculate block_last_index for M$ wmv1 */ |
||||
if(s->msmpeg4_version>=4 && s->msmpeg4_version<6 && s->block_last_index[n]>0){ |
||||
for(last_index=63; last_index>=0; last_index--){ |
||||
if(block[scantable[last_index]]) break; |
||||
} |
||||
s->block_last_index[n]= last_index; |
||||
}else |
||||
last_index = s->block_last_index[n]; |
||||
/* AC coefs */ |
||||
last_non_zero = i - 1; |
||||
for (; i <= last_index; i++) { |
||||
j = scantable[i]; |
||||
level = block[j]; |
||||
if (level) { |
||||
run = i - last_non_zero - 1; |
||||
last = (i == last_index); |
||||
sign = 0; |
||||
slevel = level; |
||||
if (level < 0) { |
||||
sign = 1; |
||||
level = -level; |
||||
} |
||||
|
||||
if(level<=MAX_LEVEL && run<=MAX_RUN){ |
||||
s->ac_stats[s->mb_intra][n>3][level][run][last]++; |
||||
} |
||||
|
||||
s->ac_stats[s->mb_intra][n > 3][40][63][0]++; //esc3 like
|
||||
|
||||
code = get_rl_index(rl, last, run, level); |
||||
put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]); |
||||
if (code == rl->n) { |
||||
int level1, run1; |
||||
|
||||
level1 = level - rl->max_level[last][run]; |
||||
if (level1 < 1) |
||||
goto esc2; |
||||
code = get_rl_index(rl, last, run, level1); |
||||
if (code == rl->n) { |
||||
esc2: |
||||
put_bits(&s->pb, 1, 0); |
||||
if (level > MAX_LEVEL) |
||||
goto esc3; |
||||
run1 = run - rl->max_run[last][level] - run_diff; |
||||
if (run1 < 0) |
||||
goto esc3; |
||||
code = get_rl_index(rl, last, run1+1, level); |
||||
if (s->msmpeg4_version == 4 && code == rl->n) |
||||
goto esc3; |
||||
code = get_rl_index(rl, last, run1, level); |
||||
if (code == rl->n) { |
||||
esc3: |
||||
/* third escape */ |
||||
put_bits(&s->pb, 1, 0); |
||||
put_bits(&s->pb, 1, last); |
||||
if(s->msmpeg4_version>=4){ |
||||
if(s->esc3_level_length==0){ |
||||
s->esc3_level_length=8; |
||||
s->esc3_run_length= 6; |
||||
//ESCLVLSZ + ESCRUNSZ
|
||||
if(s->qscale<8) |
||||
put_bits(&s->pb, 6 + (s->msmpeg4_version>=6), 3); |
||||
else |
||||
put_bits(&s->pb, 8, 3); |
||||
} |
||||
put_bits(&s->pb, s->esc3_run_length, run); |
||||
put_bits(&s->pb, 1, sign); |
||||
put_bits(&s->pb, s->esc3_level_length, level); |
||||
}else{ |
||||
put_bits(&s->pb, 6, run); |
||||
put_sbits(&s->pb, 8, slevel); |
||||
} |
||||
} else { |
||||
/* second escape */ |
||||
put_bits(&s->pb, 1, 1); |
||||
put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]); |
||||
put_bits(&s->pb, 1, sign); |
||||
} |
||||
} else { |
||||
/* first escape */ |
||||
put_bits(&s->pb, 1, 1); |
||||
put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]); |
||||
put_bits(&s->pb, 1, sign); |
||||
} |
||||
} else { |
||||
put_bits(&s->pb, 1, sign); |
||||
} |
||||
last_non_zero = i; |
||||
} |
||||
} |
||||
} |
||||
Loading…
Reference in new issue