/* * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder * Copyright (c) 2003 Michael Niedermayer * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** * @file libavcodec/h264.c * H.264 / AVC / MPEG4 part10 codec. * @author Michael Niedermayer */ #include "internal.h" #include "dsputil.h" #include "avcodec.h" #include "mpegvideo.h" #include "h264.h" #include "h264data.h" #include "h264_parser.h" #include "golomb.h" #include "mathops.h" #include "rectangle.h" #include "vdpau_internal.h" #include "cabac.h" #if ARCH_X86 #include "x86/h264_i386.h" #endif //#undef NDEBUG #include /** * Value of Picture.reference when Picture is not a reference picture, but * is held for delayed output. */ #define DELAYED_PIC_REF 4 static VLC coeff_token_vlc[4]; static VLC_TYPE coeff_token_vlc_tables[520+332+280+256][2]; static const int coeff_token_vlc_tables_size[4]={520,332,280,256}; static VLC chroma_dc_coeff_token_vlc; static VLC_TYPE chroma_dc_coeff_token_vlc_table[256][2]; static const int chroma_dc_coeff_token_vlc_table_size = 256; static VLC total_zeros_vlc[15]; static VLC_TYPE total_zeros_vlc_tables[15][512][2]; static const int total_zeros_vlc_tables_size = 512; static VLC chroma_dc_total_zeros_vlc[3]; static VLC_TYPE chroma_dc_total_zeros_vlc_tables[3][8][2]; static const int chroma_dc_total_zeros_vlc_tables_size = 8; static VLC run_vlc[6]; static VLC_TYPE run_vlc_tables[6][8][2]; static const int run_vlc_tables_size = 8; static VLC run7_vlc; static VLC_TYPE run7_vlc_table[96][2]; static const int run7_vlc_table_size = 96; static void svq3_luma_dc_dequant_idct_c(DCTELEM *block, int qp); static void svq3_add_idct_c(uint8_t *dst, DCTELEM *block, int stride, int qp, int dc); static Picture * remove_long(H264Context *h, int i, int ref_mask); static const uint8_t rem6[52]={ 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, }; static const uint8_t div6[52]={ 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, }; static const uint8_t left_block_options[4][8]={ {0,1,2,3,7,10,8,11}, {2,2,3,3,8,11,8,11}, {0,0,1,1,7,10,7,10}, {0,2,0,2,7,10,7,10} }; #define LEVEL_TAB_BITS 8 static int8_t cavlc_level_tab[7][1<s; const int mb_xy= h->mb_xy; int topleft_xy, top_xy, topright_xy, left_xy[2]; int topleft_type, top_type, topright_type, left_type[2]; const uint8_t * left_block; int topleft_partition= -1; int i; top_xy = mb_xy - (s->mb_stride << FIELD_PICTURE); //FIXME deblocking could skip the intra and nnz parts. if(for_deblock && (h->slice_num == 1 || h->slice_table[mb_xy] == h->slice_table[top_xy]) && !FRAME_MBAFF) return; /* Wow, what a mess, why didn't they simplify the interlacing & intra * stuff, I can't imagine that these complex rules are worth it. */ topleft_xy = top_xy - 1; topright_xy= top_xy + 1; left_xy[1] = left_xy[0] = mb_xy-1; left_block = left_block_options[0]; if(FRAME_MBAFF){ const int pair_xy = s->mb_x + (s->mb_y & ~1)*s->mb_stride; const int top_pair_xy = pair_xy - s->mb_stride; const int topleft_pair_xy = top_pair_xy - 1; const int topright_pair_xy = top_pair_xy + 1; const int topleft_mb_field_flag = IS_INTERLACED(s->current_picture.mb_type[topleft_pair_xy]); const int top_mb_field_flag = IS_INTERLACED(s->current_picture.mb_type[top_pair_xy]); const int topright_mb_field_flag = IS_INTERLACED(s->current_picture.mb_type[topright_pair_xy]); const int left_mb_field_flag = IS_INTERLACED(s->current_picture.mb_type[pair_xy-1]); const int curr_mb_field_flag = IS_INTERLACED(mb_type); const int bottom = (s->mb_y & 1); tprintf(s->avctx, "fill_caches: curr_mb_field_flag:%d, left_mb_field_flag:%d, topleft_mb_field_flag:%d, top_mb_field_flag:%d, topright_mb_field_flag:%d\n", curr_mb_field_flag, left_mb_field_flag, topleft_mb_field_flag, top_mb_field_flag, topright_mb_field_flag); if (curr_mb_field_flag && (bottom || top_mb_field_flag)){ top_xy -= s->mb_stride; } if (curr_mb_field_flag && (bottom || topleft_mb_field_flag)){ topleft_xy -= s->mb_stride; } else if(bottom && !curr_mb_field_flag && left_mb_field_flag) { topleft_xy += s->mb_stride; // take top left mv from the middle of the mb, as opposed to all other modes which use the bottom right partition topleft_partition = 0; } if (curr_mb_field_flag && (bottom || topright_mb_field_flag)){ topright_xy -= s->mb_stride; } if (left_mb_field_flag != curr_mb_field_flag) { left_xy[1] = left_xy[0] = pair_xy - 1; if (curr_mb_field_flag) { left_xy[1] += s->mb_stride; left_block = left_block_options[3]; } else { left_block= left_block_options[2 - bottom]; } } } h->top_mb_xy = top_xy; h->left_mb_xy[0] = left_xy[0]; h->left_mb_xy[1] = left_xy[1]; if(for_deblock){ topleft_type = 0; topright_type = 0; top_type = h->slice_table[top_xy ] < 0xFFFF ? s->current_picture.mb_type[top_xy] : 0; left_type[0] = h->slice_table[left_xy[0] ] < 0xFFFF ? s->current_picture.mb_type[left_xy[0]] : 0; left_type[1] = h->slice_table[left_xy[1] ] < 0xFFFF ? s->current_picture.mb_type[left_xy[1]] : 0; if(MB_MBAFF && !IS_INTRA(mb_type)){ int list; for(list=0; listlist_count; list++){ //These values where changed for ease of performing MC, we need to change them back //FIXME maybe we can make MC and loop filter use the same values or prevent //the MC code from changing ref_cache and rather use a temporary array. if(USES_LIST(mb_type,list)){ int8_t *ref = &s->current_picture.ref_index[list][h->mb2b8_xy[mb_xy]]; *(uint32_t*)&h->ref_cache[list][scan8[ 0]] = *(uint32_t*)&h->ref_cache[list][scan8[ 2]] = (pack16to32(ref[0],ref[1])&0x00FF00FF)*0x0101; ref += h->b8_stride; *(uint32_t*)&h->ref_cache[list][scan8[ 8]] = *(uint32_t*)&h->ref_cache[list][scan8[10]] = (pack16to32(ref[0],ref[1])&0x00FF00FF)*0x0101; } } } }else{ topleft_type = h->slice_table[topleft_xy ] == h->slice_num ? s->current_picture.mb_type[topleft_xy] : 0; top_type = h->slice_table[top_xy ] == h->slice_num ? s->current_picture.mb_type[top_xy] : 0; topright_type= h->slice_table[topright_xy] == h->slice_num ? s->current_picture.mb_type[topright_xy]: 0; left_type[0] = h->slice_table[left_xy[0] ] == h->slice_num ? s->current_picture.mb_type[left_xy[0]] : 0; left_type[1] = h->slice_table[left_xy[1] ] == h->slice_num ? s->current_picture.mb_type[left_xy[1]] : 0; if(IS_INTRA(mb_type)){ int type_mask= h->pps.constrained_intra_pred ? IS_INTRA(-1) : -1; h->topleft_samples_available= h->top_samples_available= h->left_samples_available= 0xFFFF; h->topright_samples_available= 0xEEEA; if(!(top_type & type_mask)){ h->topleft_samples_available= 0xB3FF; h->top_samples_available= 0x33FF; h->topright_samples_available= 0x26EA; } if(IS_INTERLACED(mb_type) != IS_INTERLACED(left_type[0])){ if(IS_INTERLACED(mb_type)){ if(!(left_type[0] & type_mask)){ h->topleft_samples_available&= 0xDFFF; h->left_samples_available&= 0x5FFF; } if(!(left_type[1] & type_mask)){ h->topleft_samples_available&= 0xFF5F; h->left_samples_available&= 0xFF5F; } }else{ int left_typei = h->slice_table[left_xy[0] + s->mb_stride ] == h->slice_num ? s->current_picture.mb_type[left_xy[0] + s->mb_stride] : 0; assert(left_xy[0] == left_xy[1]); if(!((left_typei & type_mask) && (left_type[0] & type_mask))){ h->topleft_samples_available&= 0xDF5F; h->left_samples_available&= 0x5F5F; } } }else{ if(!(left_type[0] & type_mask)){ h->topleft_samples_available&= 0xDF5F; h->left_samples_available&= 0x5F5F; } } if(!(topleft_type & type_mask)) h->topleft_samples_available&= 0x7FFF; if(!(topright_type & type_mask)) h->topright_samples_available&= 0xFBFF; if(IS_INTRA4x4(mb_type)){ if(IS_INTRA4x4(top_type)){ h->intra4x4_pred_mode_cache[4+8*0]= h->intra4x4_pred_mode[top_xy][4]; h->intra4x4_pred_mode_cache[5+8*0]= h->intra4x4_pred_mode[top_xy][5]; h->intra4x4_pred_mode_cache[6+8*0]= h->intra4x4_pred_mode[top_xy][6]; h->intra4x4_pred_mode_cache[7+8*0]= h->intra4x4_pred_mode[top_xy][3]; }else{ int pred; if(!(top_type & type_mask)) pred= -1; else{ pred= 2; } h->intra4x4_pred_mode_cache[4+8*0]= h->intra4x4_pred_mode_cache[5+8*0]= h->intra4x4_pred_mode_cache[6+8*0]= h->intra4x4_pred_mode_cache[7+8*0]= pred; } for(i=0; i<2; i++){ if(IS_INTRA4x4(left_type[i])){ h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[0+2*i]]; h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[1+2*i]]; }else{ int pred; if(!(left_type[i] & type_mask)) pred= -1; else{ pred= 2; } h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]= h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= pred; } } } } } /* 0 . T T. T T T T 1 L . .L . . . . 2 L . .L . . . . 3 . T TL . . . . 4 L . .L . . . . 5 L . .. . . . . */ //FIXME constraint_intra_pred & partitioning & nnz (let us hope this is just a typo in the spec) if(top_type){ h->non_zero_count_cache[4+8*0]= h->non_zero_count[top_xy][4]; h->non_zero_count_cache[5+8*0]= h->non_zero_count[top_xy][5]; h->non_zero_count_cache[6+8*0]= h->non_zero_count[top_xy][6]; h->non_zero_count_cache[7+8*0]= h->non_zero_count[top_xy][3]; h->non_zero_count_cache[1+8*0]= h->non_zero_count[top_xy][9]; h->non_zero_count_cache[2+8*0]= h->non_zero_count[top_xy][8]; h->non_zero_count_cache[1+8*3]= h->non_zero_count[top_xy][12]; h->non_zero_count_cache[2+8*3]= h->non_zero_count[top_xy][11]; }else{ h->non_zero_count_cache[4+8*0]= h->non_zero_count_cache[5+8*0]= h->non_zero_count_cache[6+8*0]= h->non_zero_count_cache[7+8*0]= h->non_zero_count_cache[1+8*0]= h->non_zero_count_cache[2+8*0]= h->non_zero_count_cache[1+8*3]= h->non_zero_count_cache[2+8*3]= h->pps.cabac && !IS_INTRA(mb_type) ? 0 : 64; } for (i=0; i<2; i++) { if(left_type[i]){ h->non_zero_count_cache[3+8*1 + 2*8*i]= h->non_zero_count[left_xy[i]][left_block[0+2*i]]; h->non_zero_count_cache[3+8*2 + 2*8*i]= h->non_zero_count[left_xy[i]][left_block[1+2*i]]; h->non_zero_count_cache[0+8*1 + 8*i]= h->non_zero_count[left_xy[i]][left_block[4+2*i]]; h->non_zero_count_cache[0+8*4 + 8*i]= h->non_zero_count[left_xy[i]][left_block[5+2*i]]; }else{ h->non_zero_count_cache[3+8*1 + 2*8*i]= h->non_zero_count_cache[3+8*2 + 2*8*i]= h->non_zero_count_cache[0+8*1 + 8*i]= h->non_zero_count_cache[0+8*4 + 8*i]= h->pps.cabac && !IS_INTRA(mb_type) ? 0 : 64; } } if( h->pps.cabac ) { // top_cbp if(top_type) { h->top_cbp = h->cbp_table[top_xy]; } else if(IS_INTRA(mb_type)) { h->top_cbp = 0x1C0; } else { h->top_cbp = 0; } // left_cbp if (left_type[0]) { h->left_cbp = h->cbp_table[left_xy[0]] & 0x1f0; } else if(IS_INTRA(mb_type)) { h->left_cbp = 0x1C0; } else { h->left_cbp = 0; } if (left_type[0]) { h->left_cbp |= ((h->cbp_table[left_xy[0]]>>((left_block[0]&(~1))+1))&0x1) << 1; } if (left_type[1]) { h->left_cbp |= ((h->cbp_table[left_xy[1]]>>((left_block[2]&(~1))+1))&0x1) << 3; } } #if 1 if(IS_INTER(mb_type) || IS_DIRECT(mb_type)){ int list; for(list=0; listlist_count; list++){ if(!USES_LIST(mb_type, list) && !IS_DIRECT(mb_type) && !h->deblocking_filter){ /*if(!h->mv_cache_clean[list]){ memset(h->mv_cache [list], 0, 8*5*2*sizeof(int16_t)); //FIXME clean only input? clean at all? memset(h->ref_cache[list], PART_NOT_AVAILABLE, 8*5*sizeof(int8_t)); h->mv_cache_clean[list]= 1; }*/ continue; } h->mv_cache_clean[list]= 0; if(USES_LIST(top_type, list)){ const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride; const int b8_xy= h->mb2b8_xy[top_xy] + h->b8_stride; *(uint32_t*)h->mv_cache[list][scan8[0] + 0 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 0]; *(uint32_t*)h->mv_cache[list][scan8[0] + 1 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 1]; *(uint32_t*)h->mv_cache[list][scan8[0] + 2 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 2]; *(uint32_t*)h->mv_cache[list][scan8[0] + 3 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 3]; h->ref_cache[list][scan8[0] + 0 - 1*8]= h->ref_cache[list][scan8[0] + 1 - 1*8]= s->current_picture.ref_index[list][b8_xy + 0]; h->ref_cache[list][scan8[0] + 2 - 1*8]= h->ref_cache[list][scan8[0] + 3 - 1*8]= s->current_picture.ref_index[list][b8_xy + 1]; }else{ *(uint32_t*)h->mv_cache [list][scan8[0] + 0 - 1*8]= *(uint32_t*)h->mv_cache [list][scan8[0] + 1 - 1*8]= *(uint32_t*)h->mv_cache [list][scan8[0] + 2 - 1*8]= *(uint32_t*)h->mv_cache [list][scan8[0] + 3 - 1*8]= 0; *(uint32_t*)&h->ref_cache[list][scan8[0] + 0 - 1*8]= ((top_type ? LIST_NOT_USED : PART_NOT_AVAILABLE)&0xFF)*0x01010101; } for(i=0; i<2; i++){ int cache_idx = scan8[0] - 1 + i*2*8; if(USES_LIST(left_type[i], list)){ const int b_xy= h->mb2b_xy[left_xy[i]] + 3; const int b8_xy= h->mb2b8_xy[left_xy[i]] + 1; *(uint32_t*)h->mv_cache[list][cache_idx ]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[0+i*2]]; *(uint32_t*)h->mv_cache[list][cache_idx+8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[1+i*2]]; h->ref_cache[list][cache_idx ]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[0+i*2]>>1)]; h->ref_cache[list][cache_idx+8]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[1+i*2]>>1)]; }else{ *(uint32_t*)h->mv_cache [list][cache_idx ]= *(uint32_t*)h->mv_cache [list][cache_idx+8]= 0; h->ref_cache[list][cache_idx ]= h->ref_cache[list][cache_idx+8]= left_type[i] ? LIST_NOT_USED : PART_NOT_AVAILABLE; } } if(for_deblock || ((IS_DIRECT(mb_type) && !h->direct_spatial_mv_pred) && !FRAME_MBAFF)) continue; if(USES_LIST(topleft_type, list)){ const int b_xy = h->mb2b_xy[topleft_xy] + 3 + h->b_stride + (topleft_partition & 2*h->b_stride); const int b8_xy= h->mb2b8_xy[topleft_xy] + 1 + (topleft_partition & h->b8_stride); *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy]; h->ref_cache[list][scan8[0] - 1 - 1*8]= s->current_picture.ref_index[list][b8_xy]; }else{ *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= 0; h->ref_cache[list][scan8[0] - 1 - 1*8]= topleft_type ? LIST_NOT_USED : PART_NOT_AVAILABLE; } if(USES_LIST(topright_type, list)){ const int b_xy= h->mb2b_xy[topright_xy] + 3*h->b_stride; const int b8_xy= h->mb2b8_xy[topright_xy] + h->b8_stride; *(uint32_t*)h->mv_cache[list][scan8[0] + 4 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy]; h->ref_cache[list][scan8[0] + 4 - 1*8]= s->current_picture.ref_index[list][b8_xy]; }else{ *(uint32_t*)h->mv_cache [list][scan8[0] + 4 - 1*8]= 0; h->ref_cache[list][scan8[0] + 4 - 1*8]= topright_type ? LIST_NOT_USED : PART_NOT_AVAILABLE; } if((IS_SKIP(mb_type) || IS_DIRECT(mb_type)) && !FRAME_MBAFF) continue; h->ref_cache[list][scan8[5 ]+1] = h->ref_cache[list][scan8[7 ]+1] = h->ref_cache[list][scan8[13]+1] = //FIXME remove past 3 (init somewhere else) h->ref_cache[list][scan8[4 ]] = h->ref_cache[list][scan8[12]] = PART_NOT_AVAILABLE; *(uint32_t*)h->mv_cache [list][scan8[5 ]+1]= *(uint32_t*)h->mv_cache [list][scan8[7 ]+1]= *(uint32_t*)h->mv_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewhere else) *(uint32_t*)h->mv_cache [list][scan8[4 ]]= *(uint32_t*)h->mv_cache [list][scan8[12]]= 0; if( h->pps.cabac ) { /* XXX beurk, Load mvd */ if(USES_LIST(top_type, list)){ const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride; *(uint32_t*)h->mvd_cache[list][scan8[0] + 0 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 0]; *(uint32_t*)h->mvd_cache[list][scan8[0] + 1 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 1]; *(uint32_t*)h->mvd_cache[list][scan8[0] + 2 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 2]; *(uint32_t*)h->mvd_cache[list][scan8[0] + 3 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 3]; }else{ *(uint32_t*)h->mvd_cache [list][scan8[0] + 0 - 1*8]= *(uint32_t*)h->mvd_cache [list][scan8[0] + 1 - 1*8]= *(uint32_t*)h->mvd_cache [list][scan8[0] + 2 - 1*8]= *(uint32_t*)h->mvd_cache [list][scan8[0] + 3 - 1*8]= 0; } if(USES_LIST(left_type[0], list)){ const int b_xy= h->mb2b_xy[left_xy[0]] + 3; *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 0*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[0]]; *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[1]]; }else{ *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 0*8]= *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 1*8]= 0; } if(USES_LIST(left_type[1], list)){ const int b_xy= h->mb2b_xy[left_xy[1]] + 3; *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 2*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[2]]; *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 3*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[3]]; }else{ *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 2*8]= *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 3*8]= 0; } *(uint32_t*)h->mvd_cache [list][scan8[5 ]+1]= *(uint32_t*)h->mvd_cache [list][scan8[7 ]+1]= *(uint32_t*)h->mvd_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewhere else) *(uint32_t*)h->mvd_cache [list][scan8[4 ]]= *(uint32_t*)h->mvd_cache [list][scan8[12]]= 0; if(h->slice_type_nos == FF_B_TYPE){ fill_rectangle(&h->direct_cache[scan8[0]], 4, 4, 8, 0, 1); if(IS_DIRECT(top_type)){ *(uint32_t*)&h->direct_cache[scan8[0] - 1*8]= 0x01010101; }else if(IS_8X8(top_type)){ int b8_xy = h->mb2b8_xy[top_xy] + h->b8_stride; h->direct_cache[scan8[0] + 0 - 1*8]= h->direct_table[b8_xy]; h->direct_cache[scan8[0] + 2 - 1*8]= h->direct_table[b8_xy + 1]; }else{ *(uint32_t*)&h->direct_cache[scan8[0] - 1*8]= 0; } if(IS_DIRECT(left_type[0])) h->direct_cache[scan8[0] - 1 + 0*8]= 1; else if(IS_8X8(left_type[0])) h->direct_cache[scan8[0] - 1 + 0*8]= h->direct_table[h->mb2b8_xy[left_xy[0]] + 1 + h->b8_stride*(left_block[0]>>1)]; else h->direct_cache[scan8[0] - 1 + 0*8]= 0; if(IS_DIRECT(left_type[1])) h->direct_cache[scan8[0] - 1 + 2*8]= 1; else if(IS_8X8(left_type[1])) h->direct_cache[scan8[0] - 1 + 2*8]= h->direct_table[h->mb2b8_xy[left_xy[1]] + 1 + h->b8_stride*(left_block[2]>>1)]; else h->direct_cache[scan8[0] - 1 + 2*8]= 0; } } if(FRAME_MBAFF){ #define MAP_MVS\ MAP_F2F(scan8[0] - 1 - 1*8, topleft_type)\ MAP_F2F(scan8[0] + 0 - 1*8, top_type)\ MAP_F2F(scan8[0] + 1 - 1*8, top_type)\ MAP_F2F(scan8[0] + 2 - 1*8, top_type)\ MAP_F2F(scan8[0] + 3 - 1*8, top_type)\ MAP_F2F(scan8[0] + 4 - 1*8, topright_type)\ MAP_F2F(scan8[0] - 1 + 0*8, left_type[0])\ MAP_F2F(scan8[0] - 1 + 1*8, left_type[0])\ MAP_F2F(scan8[0] - 1 + 2*8, left_type[1])\ MAP_F2F(scan8[0] - 1 + 3*8, left_type[1]) if(MB_FIELD){ #define MAP_F2F(idx, mb_type)\ if(!IS_INTERLACED(mb_type) && h->ref_cache[list][idx] >= 0){\ h->ref_cache[list][idx] <<= 1;\ h->mv_cache[list][idx][1] /= 2;\ h->mvd_cache[list][idx][1] /= 2;\ } MAP_MVS #undef MAP_F2F }else{ #define MAP_F2F(idx, mb_type)\ if(IS_INTERLACED(mb_type) && h->ref_cache[list][idx] >= 0){\ h->ref_cache[list][idx] >>= 1;\ h->mv_cache[list][idx][1] <<= 1;\ h->mvd_cache[list][idx][1] <<= 1;\ } MAP_MVS #undef MAP_F2F } } } } #endif h->neighbor_transform_size= !!IS_8x8DCT(top_type) + !!IS_8x8DCT(left_type[0]); } void ff_h264_write_back_intra_pred_mode(H264Context *h){ const int mb_xy= h->mb_xy; h->intra4x4_pred_mode[mb_xy][0]= h->intra4x4_pred_mode_cache[7+8*1]; h->intra4x4_pred_mode[mb_xy][1]= h->intra4x4_pred_mode_cache[7+8*2]; h->intra4x4_pred_mode[mb_xy][2]= h->intra4x4_pred_mode_cache[7+8*3]; h->intra4x4_pred_mode[mb_xy][3]= h->intra4x4_pred_mode_cache[7+8*4]; h->intra4x4_pred_mode[mb_xy][4]= h->intra4x4_pred_mode_cache[4+8*4]; h->intra4x4_pred_mode[mb_xy][5]= h->intra4x4_pred_mode_cache[5+8*4]; h->intra4x4_pred_mode[mb_xy][6]= h->intra4x4_pred_mode_cache[6+8*4]; } /** * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks. */ int ff_h264_check_intra_pred_mode(H264Context *h, int mode){ MpegEncContext * const s = &h->s; static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1}; static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8}; if(mode > 6U) { av_log(h->s.avctx, AV_LOG_ERROR, "out of range intra chroma pred mode at %d %d\n", s->mb_x, s->mb_y); return -1; } if(!(h->top_samples_available&0x8000)){ mode= top[ mode ]; if(mode<0){ av_log(h->s.avctx, AV_LOG_ERROR, "top block unavailable for requested intra mode at %d %d\n", s->mb_x, s->mb_y); return -1; } } if((h->left_samples_available&0x8080) != 0x8080){ mode= left[ mode ]; if(h->left_samples_available&0x8080){ //mad cow disease mode, aka MBAFF + constrained_intra_pred mode= ALZHEIMER_DC_L0T_PRED8x8 + (!(h->left_samples_available&0x8000)) + 2*(mode == DC_128_PRED8x8); } if(mode<0){ av_log(h->s.avctx, AV_LOG_ERROR, "left block unavailable for requested intra mode at %d %d\n", s->mb_x, s->mb_y); return -1; } } return mode; } /** * gets the predicted intra4x4 prediction mode. */ static inline int pred_intra_mode(H264Context *h, int n){ const int index8= scan8[n]; const int left= h->intra4x4_pred_mode_cache[index8 - 1]; const int top = h->intra4x4_pred_mode_cache[index8 - 8]; const int min= FFMIN(left, top); tprintf(h->s.avctx, "mode:%d %d min:%d\n", left ,top, min); if(min<0) return DC_PRED; else return min; } static inline void write_back_non_zero_count(H264Context *h){ const int mb_xy= h->mb_xy; h->non_zero_count[mb_xy][0]= h->non_zero_count_cache[7+8*1]; h->non_zero_count[mb_xy][1]= h->non_zero_count_cache[7+8*2]; h->non_zero_count[mb_xy][2]= h->non_zero_count_cache[7+8*3]; h->non_zero_count[mb_xy][3]= h->non_zero_count_cache[7+8*4]; h->non_zero_count[mb_xy][4]= h->non_zero_count_cache[4+8*4]; h->non_zero_count[mb_xy][5]= h->non_zero_count_cache[5+8*4]; h->non_zero_count[mb_xy][6]= h->non_zero_count_cache[6+8*4]; h->non_zero_count[mb_xy][9]= h->non_zero_count_cache[1+8*2]; h->non_zero_count[mb_xy][8]= h->non_zero_count_cache[2+8*2]; h->non_zero_count[mb_xy][7]= h->non_zero_count_cache[2+8*1]; h->non_zero_count[mb_xy][12]=h->non_zero_count_cache[1+8*5]; h->non_zero_count[mb_xy][11]=h->non_zero_count_cache[2+8*5]; h->non_zero_count[mb_xy][10]=h->non_zero_count_cache[2+8*4]; } /** * gets the predicted number of non-zero coefficients. * @param n block index */ static inline int pred_non_zero_count(H264Context *h, int n){ const int index8= scan8[n]; const int left= h->non_zero_count_cache[index8 - 1]; const int top = h->non_zero_count_cache[index8 - 8]; int i= left + top; if(i<64) i= (i+1)>>1; tprintf(h->s.avctx, "pred_nnz L%X T%X n%d s%d P%X\n", left, top, n, scan8[n], i&31); return i&31; } /** * gets the directionally predicted 16x8 MV. * @param n the block index * @param mx the x component of the predicted motion vector * @param my the y component of the predicted motion vector */ static inline void pred_16x8_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){ if(n==0){ const int top_ref= h->ref_cache[list][ scan8[0] - 8 ]; const int16_t * const B= h->mv_cache[list][ scan8[0] - 8 ]; tprintf(h->s.avctx, "pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d\n", top_ref, B[0], B[1], h->s.mb_x, h->s.mb_y, n, list); if(top_ref == ref){ *mx= B[0]; *my= B[1]; return; } }else{ const int left_ref= h->ref_cache[list][ scan8[8] - 1 ]; const int16_t * const A= h->mv_cache[list][ scan8[8] - 1 ]; tprintf(h->s.avctx, "pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d\n", left_ref, A[0], A[1], h->s.mb_x, h->s.mb_y, n, list); if(left_ref == ref){ *mx= A[0]; *my= A[1]; return; } } //RARE pred_motion(h, n, 4, list, ref, mx, my); } /** * gets the directionally predicted 8x16 MV. * @param n the block index * @param mx the x component of the predicted motion vector * @param my the y component of the predicted motion vector */ static inline void pred_8x16_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){ if(n==0){ const int left_ref= h->ref_cache[list][ scan8[0] - 1 ]; const int16_t * const A= h->mv_cache[list][ scan8[0] - 1 ]; tprintf(h->s.avctx, "pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d\n", left_ref, A[0], A[1], h->s.mb_x, h->s.mb_y, n, list); if(left_ref == ref){ *mx= A[0]; *my= A[1]; return; } }else{ const int16_t * C; int diagonal_ref; diagonal_ref= fetch_diagonal_mv(h, &C, scan8[4], list, 2); tprintf(h->s.avctx, "pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d\n", diagonal_ref, C[0], C[1], h->s.mb_x, h->s.mb_y, n, list); if(diagonal_ref == ref){ *mx= C[0]; *my= C[1]; return; } } //RARE pred_motion(h, n, 2, list, ref, mx, my); } static inline void pred_pskip_motion(H264Context * const h, int * const mx, int * const my){ const int top_ref = h->ref_cache[0][ scan8[0] - 8 ]; const int left_ref= h->ref_cache[0][ scan8[0] - 1 ]; tprintf(h->s.avctx, "pred_pskip: (%d) (%d) at %2d %2d\n", top_ref, left_ref, h->s.mb_x, h->s.mb_y); if(top_ref == PART_NOT_AVAILABLE || left_ref == PART_NOT_AVAILABLE || !( top_ref | *(uint32_t*)h->mv_cache[0][ scan8[0] - 8 ]) || !(left_ref | *(uint32_t*)h->mv_cache[0][ scan8[0] - 1 ])){ *mx = *my = 0; return; } pred_motion(h, 0, 4, 0, 0, mx, my); return; } static inline void write_back_motion(H264Context *h, int mb_type){ MpegEncContext * const s = &h->s; const int b_xy = 4*s->mb_x + 4*s->mb_y*h->b_stride; const int b8_xy= 2*s->mb_x + 2*s->mb_y*h->b8_stride; int list; if(!USES_LIST(mb_type, 0)) fill_rectangle(&s->current_picture.ref_index[0][b8_xy], 2, 2, h->b8_stride, (uint8_t)LIST_NOT_USED, 1); for(list=0; listlist_count; list++){ int y; if(!USES_LIST(mb_type, list)) continue; for(y=0; y<4; y++){ *(uint64_t*)s->current_picture.motion_val[list][b_xy + 0 + y*h->b_stride]= *(uint64_t*)h->mv_cache[list][scan8[0]+0 + 8*y]; *(uint64_t*)s->current_picture.motion_val[list][b_xy + 2 + y*h->b_stride]= *(uint64_t*)h->mv_cache[list][scan8[0]+2 + 8*y]; } if( h->pps.cabac ) { if(IS_SKIP(mb_type)) fill_rectangle(h->mvd_table[list][b_xy], 4, 4, h->b_stride, 0, 4); else for(y=0; y<4; y++){ *(uint64_t*)h->mvd_table[list][b_xy + 0 + y*h->b_stride]= *(uint64_t*)h->mvd_cache[list][scan8[0]+0 + 8*y]; *(uint64_t*)h->mvd_table[list][b_xy + 2 + y*h->b_stride]= *(uint64_t*)h->mvd_cache[list][scan8[0]+2 + 8*y]; } } { int8_t *ref_index = &s->current_picture.ref_index[list][b8_xy]; ref_index[0+0*h->b8_stride]= h->ref_cache[list][scan8[0]]; ref_index[1+0*h->b8_stride]= h->ref_cache[list][scan8[4]]; ref_index[0+1*h->b8_stride]= h->ref_cache[list][scan8[8]]; ref_index[1+1*h->b8_stride]= h->ref_cache[list][scan8[12]]; } } if(h->slice_type_nos == FF_B_TYPE && h->pps.cabac){ if(IS_8X8(mb_type)){ uint8_t *direct_table = &h->direct_table[b8_xy]; direct_table[1+0*h->b8_stride] = IS_DIRECT(h->sub_mb_type[1]) ? 1 : 0; direct_table[0+1*h->b8_stride] = IS_DIRECT(h->sub_mb_type[2]) ? 1 : 0; direct_table[1+1*h->b8_stride] = IS_DIRECT(h->sub_mb_type[3]) ? 1 : 0; } } } const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length){ int i, si, di; uint8_t *dst; int bufidx; // src[0]&0x80; //forbidden bit h->nal_ref_idc= src[0]>>5; h->nal_unit_type= src[0]&0x1F; src++; length--; #if 0 for(i=0; i0 && !src[i]) i--; while(src[i]) i++; #else # define RS 0 for(i=0; i+10 && src[i-1]==0) i--; #endif if(i+2=length-1){ //no escaped 0 *dst_length= length; *consumed= length+1; //+1 for the header return src; } bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0; // use second escape buffer for inter data av_fast_malloc(&h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length+FF_INPUT_BUFFER_PADDING_SIZE); dst= h->rbsp_buffer[bufidx]; if (dst == NULL){ return NULL; } //printf("decoding esc\n"); memcpy(dst, src, i); si=di=i; while(si+23){ dst[di++]= src[si++]; dst[di++]= src[si++]; }else if(src[si]==0 && src[si+1]==0){ if(src[si+2]==3){ //escape dst[di++]= 0; dst[di++]= 0; si+=3; continue; }else //next start code goto nsc; } dst[di++]= src[si++]; } while(sis.avctx, "rbsp trailing %X\n", v); for(r=1; r<9; r++){ if(v&1) return r; v>>=1; } return 0; } /** * IDCT transforms the 16 dc values and dequantizes them. * @param qp quantization parameter */ static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){ #define stride 16 int i; int temp[16]; //FIXME check if this is a good idea static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride}; static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride}; //memset(block, 64, 2*256); //return; for(i=0; i<4; i++){ const int offset= y_offset[i]; const int z0= block[offset+stride*0] + block[offset+stride*4]; const int z1= block[offset+stride*0] - block[offset+stride*4]; const int z2= block[offset+stride*1] - block[offset+stride*5]; const int z3= block[offset+stride*1] + block[offset+stride*5]; temp[4*i+0]= z0+z3; temp[4*i+1]= z1+z2; temp[4*i+2]= z1-z2; temp[4*i+3]= z0-z3; } for(i=0; i<4; i++){ const int offset= x_offset[i]; const int z0= temp[4*0+i] + temp[4*2+i]; const int z1= temp[4*0+i] - temp[4*2+i]; const int z2= temp[4*1+i] - temp[4*3+i]; const int z3= temp[4*1+i] + temp[4*3+i]; block[stride*0 +offset]= ((((z0 + z3)*qmul + 128 ) >> 8)); //FIXME think about merging this into decode_residual block[stride*2 +offset]= ((((z1 + z2)*qmul + 128 ) >> 8)); block[stride*8 +offset]= ((((z1 - z2)*qmul + 128 ) >> 8)); block[stride*10+offset]= ((((z0 - z3)*qmul + 128 ) >> 8)); } } #if 0 /** * DCT transforms the 16 dc values. * @param qp quantization parameter ??? FIXME */ static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){ // const int qmul= dequant_coeff[qp][0]; int i; int temp[16]; //FIXME check if this is a good idea static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride}; static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride}; for(i=0; i<4; i++){ const int offset= y_offset[i]; const int z0= block[offset+stride*0] + block[offset+stride*4]; const int z1= block[offset+stride*0] - block[offset+stride*4]; const int z2= block[offset+stride*1] - block[offset+stride*5]; const int z3= block[offset+stride*1] + block[offset+stride*5]; temp[4*i+0]= z0+z3; temp[4*i+1]= z1+z2; temp[4*i+2]= z1-z2; temp[4*i+3]= z0-z3; } for(i=0; i<4; i++){ const int offset= x_offset[i]; const int z0= temp[4*0+i] + temp[4*2+i]; const int z1= temp[4*0+i] - temp[4*2+i]; const int z2= temp[4*1+i] - temp[4*3+i]; const int z3= temp[4*1+i] + temp[4*3+i]; block[stride*0 +offset]= (z0 + z3)>>1; block[stride*2 +offset]= (z1 + z2)>>1; block[stride*8 +offset]= (z1 - z2)>>1; block[stride*10+offset]= (z0 - z3)>>1; } } #endif #undef xStride #undef stride static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){ const int stride= 16*2; const int xStride= 16; int a,b,c,d,e; a= block[stride*0 + xStride*0]; b= block[stride*0 + xStride*1]; c= block[stride*1 + xStride*0]; d= block[stride*1 + xStride*1]; e= a-b; a= a+b; b= c-d; c= c+d; block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7; block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7; block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7; block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7; } #if 0 static void chroma_dc_dct_c(DCTELEM *block){ const int stride= 16*2; const int xStride= 16; int a,b,c,d,e; a= block[stride*0 + xStride*0]; b= block[stride*0 + xStride*1]; c= block[stride*1 + xStride*0]; d= block[stride*1 + xStride*1]; e= a-b; a= a+b; b= c-d; c= c+d; block[stride*0 + xStride*0]= (a+c); block[stride*0 + xStride*1]= (e+b); block[stride*1 + xStride*0]= (a-c); block[stride*1 + xStride*1]= (e-b); } #endif static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int src_x_offset, int src_y_offset, qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){ MpegEncContext * const s = &h->s; const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8; int my= h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8; const int luma_xy= (mx&3) + ((my&3)<<2); uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*h->mb_linesize; uint8_t * src_cb, * src_cr; int extra_width= h->emu_edge_width; int extra_height= h->emu_edge_height; int emu=0; const int full_mx= mx>>2; const int full_my= my>>2; const int pic_width = 16*s->mb_width; const int pic_height = 16*s->mb_height >> MB_FIELD; if(mx&7) extra_width -= 3; if(my&7) extra_height -= 3; if( full_mx < 0-extra_width || full_my < 0-extra_height || full_mx + 16/*FIXME*/ > pic_width + extra_width || full_my + 16/*FIXME*/ > pic_height + extra_height){ ff_emulated_edge_mc(s->edge_emu_buffer, src_y - 2 - 2*h->mb_linesize, h->mb_linesize, 16+5, 16+5/*FIXME*/, full_mx-2, full_my-2, pic_width, pic_height); src_y= s->edge_emu_buffer + 2 + 2*h->mb_linesize; emu=1; } qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); //FIXME try variable height perhaps? if(!square){ qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize); } if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return; if(MB_FIELD){ // chroma offset when predicting from a field of opposite parity my += 2 * ((s->mb_y & 1) - (pic->reference - 1)); emu |= (my>>3) < 0 || (my>>3) + 8 >= (pic_height>>1); } src_cb= pic->data[1] + (mx>>3) + (my>>3)*h->mb_uvlinesize; src_cr= pic->data[2] + (mx>>3) + (my>>3)*h->mb_uvlinesize; if(emu){ ff_emulated_edge_mc(s->edge_emu_buffer, src_cb, h->mb_uvlinesize, 9, 9/*FIXME*/, (mx>>3), (my>>3), pic_width>>1, pic_height>>1); src_cb= s->edge_emu_buffer; } chroma_op(dest_cb, src_cb, h->mb_uvlinesize, chroma_height, mx&7, my&7); if(emu){ ff_emulated_edge_mc(s->edge_emu_buffer, src_cr, h->mb_uvlinesize, 9, 9/*FIXME*/, (mx>>3), (my>>3), pic_width>>1, pic_height>>1); src_cr= s->edge_emu_buffer; } chroma_op(dest_cr, src_cr, h->mb_uvlinesize, chroma_height, mx&7, my&7); } static inline void mc_part_std(H264Context *h, int n, int square, int chroma_height, int delta, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int x_offset, int y_offset, qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put, qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg, int list0, int list1){ MpegEncContext * const s = &h->s; qpel_mc_func *qpix_op= qpix_put; h264_chroma_mc_func chroma_op= chroma_put; dest_y += 2*x_offset + 2*y_offset*h-> mb_linesize; dest_cb += x_offset + y_offset*h->mb_uvlinesize; dest_cr += x_offset + y_offset*h->mb_uvlinesize; x_offset += 8*s->mb_x; y_offset += 8*(s->mb_y >> MB_FIELD); if(list0){ Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ]; mc_dir_part(h, ref, n, square, chroma_height, delta, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset, qpix_op, chroma_op); qpix_op= qpix_avg; chroma_op= chroma_avg; } if(list1){ Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ]; mc_dir_part(h, ref, n, square, chroma_height, delta, 1, dest_y, dest_cb, dest_cr, x_offset, y_offset, qpix_op, chroma_op); } } static inline void mc_part_weighted(H264Context *h, int n, int square, int chroma_height, int delta, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int x_offset, int y_offset, qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put, h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op, h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg, int list0, int list1){ MpegEncContext * const s = &h->s; dest_y += 2*x_offset + 2*y_offset*h-> mb_linesize; dest_cb += x_offset + y_offset*h->mb_uvlinesize; dest_cr += x_offset + y_offset*h->mb_uvlinesize; x_offset += 8*s->mb_x; y_offset += 8*(s->mb_y >> MB_FIELD); if(list0 && list1){ /* don't optimize for luma-only case, since B-frames usually * use implicit weights => chroma too. */ uint8_t *tmp_cb = s->obmc_scratchpad; uint8_t *tmp_cr = s->obmc_scratchpad + 8; uint8_t *tmp_y = s->obmc_scratchpad + 8*h->mb_uvlinesize; int refn0 = h->ref_cache[0][ scan8[n] ]; int refn1 = h->ref_cache[1][ scan8[n] ]; mc_dir_part(h, &h->ref_list[0][refn0], n, square, chroma_height, delta, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset, qpix_put, chroma_put); mc_dir_part(h, &h->ref_list[1][refn1], n, square, chroma_height, delta, 1, tmp_y, tmp_cb, tmp_cr, x_offset, y_offset, qpix_put, chroma_put); if(h->use_weight == 2){ int weight0 = h->implicit_weight[refn0][refn1]; int weight1 = 64 - weight0; luma_weight_avg( dest_y, tmp_y, h-> mb_linesize, 5, weight0, weight1, 0); chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, 5, weight0, weight1, 0); chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, 5, weight0, weight1, 0); }else{ luma_weight_avg(dest_y, tmp_y, h->mb_linesize, h->luma_log2_weight_denom, h->luma_weight[0][refn0], h->luma_weight[1][refn1], h->luma_offset[0][refn0] + h->luma_offset[1][refn1]); chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom, h->chroma_weight[0][refn0][0], h->chroma_weight[1][refn1][0], h->chroma_offset[0][refn0][0] + h->chroma_offset[1][refn1][0]); chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom, h->chroma_weight[0][refn0][1], h->chroma_weight[1][refn1][1], h->chroma_offset[0][refn0][1] + h->chroma_offset[1][refn1][1]); } }else{ int list = list1 ? 1 : 0; int refn = h->ref_cache[list][ scan8[n] ]; Picture *ref= &h->ref_list[list][refn]; mc_dir_part(h, ref, n, square, chroma_height, delta, list, dest_y, dest_cb, dest_cr, x_offset, y_offset, qpix_put, chroma_put); luma_weight_op(dest_y, h->mb_linesize, h->luma_log2_weight_denom, h->luma_weight[list][refn], h->luma_offset[list][refn]); if(h->use_weight_chroma){ chroma_weight_op(dest_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom, h->chroma_weight[list][refn][0], h->chroma_offset[list][refn][0]); chroma_weight_op(dest_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom, h->chroma_weight[list][refn][1], h->chroma_offset[list][refn][1]); } } } static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int x_offset, int y_offset, qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put, qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg, h264_weight_func *weight_op, h264_biweight_func *weight_avg, int list0, int list1){ if((h->use_weight==2 && list0 && list1 && (h->implicit_weight[ h->ref_cache[0][scan8[n]] ][ h->ref_cache[1][scan8[n]] ] != 32)) || h->use_weight==1) mc_part_weighted(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr, x_offset, y_offset, qpix_put, chroma_put, weight_op[0], weight_op[3], weight_avg[0], weight_avg[3], list0, list1); else mc_part_std(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr, x_offset, y_offset, qpix_put, chroma_put, qpix_avg, chroma_avg, list0, list1); } static inline void prefetch_motion(H264Context *h, int list){ /* fetch pixels for estimated mv 4 macroblocks ahead * optimized for 64byte cache lines */ MpegEncContext * const s = &h->s; const int refn = h->ref_cache[list][scan8[0]]; if(refn >= 0){ const int mx= (h->mv_cache[list][scan8[0]][0]>>2) + 16*s->mb_x + 8; const int my= (h->mv_cache[list][scan8[0]][1]>>2) + 16*s->mb_y; uint8_t **src= h->ref_list[list][refn].data; int off= mx + (my + (s->mb_x&3)*4)*h->mb_linesize + 64; s->dsp.prefetch(src[0]+off, s->linesize, 4); off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64; s->dsp.prefetch(src[1]+off, src[2]-src[1], 2); } } static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put), qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg), h264_weight_func *weight_op, h264_biweight_func *weight_avg){ MpegEncContext * const s = &h->s; const int mb_xy= h->mb_xy; const int mb_type= s->current_picture.mb_type[mb_xy]; assert(IS_INTER(mb_type)); prefetch_motion(h, 0); if(IS_16X16(mb_type)){ mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0, qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0], &weight_op[0], &weight_avg[0], IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1)); }else if(IS_16X8(mb_type)){ mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0, qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0], &weight_op[1], &weight_avg[1], IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1)); mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4, qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0], &weight_op[1], &weight_avg[1], IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1)); }else if(IS_8X16(mb_type)){ mc_part(h, 0, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0, qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1], &weight_op[2], &weight_avg[2], IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1)); mc_part(h, 4, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0, qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1], &weight_op[2], &weight_avg[2], IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1)); }else{ int i; assert(IS_8X8(mb_type)); for(i=0; i<4; i++){ const int sub_mb_type= h->sub_mb_type[i]; const int n= 4*i; int x_offset= (i&1)<<2; int y_offset= (i&2)<<1; if(IS_SUB_8X8(sub_mb_type)){ mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset, qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1], &weight_op[3], &weight_avg[3], IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1)); }else if(IS_SUB_8X4(sub_mb_type)){ mc_part(h, n , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset, qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1], &weight_op[4], &weight_avg[4], IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1)); mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2, qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1], &weight_op[4], &weight_avg[4], IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1)); }else if(IS_SUB_4X8(sub_mb_type)){ mc_part(h, n , 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset, qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2], &weight_op[5], &weight_avg[5], IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1)); mc_part(h, n+1, 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset, qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2], &weight_op[5], &weight_avg[5], IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1)); }else{ int j; assert(IS_SUB_4X4(sub_mb_type)); for(j=0; j<4; j++){ int sub_x_offset= x_offset + 2*(j&1); int sub_y_offset= y_offset + (j&2); mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset, qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2], &weight_op[6], &weight_avg[6], IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1)); } } } } prefetch_motion(h, 1); } static av_cold void init_cavlc_level_tab(void){ int suffix_length, mask; unsigned int i; for(suffix_length=0; suffix_length<7; suffix_length++){ for(i=0; i<(1<>(LEVEL_TAB_BITS-prefix-1-suffix_length)) - (1<>1) ^ mask) - mask; if(prefix + 1 + suffix_length <= LEVEL_TAB_BITS){ cavlc_level_tab[suffix_length][i][0]= level_code; cavlc_level_tab[suffix_length][i][1]= prefix + 1 + suffix_length; }else if(prefix + 1 <= LEVEL_TAB_BITS){ cavlc_level_tab[suffix_length][i][0]= prefix+100; cavlc_level_tab[suffix_length][i][1]= prefix + 1; }else{ cavlc_level_tab[suffix_length][i][0]= LEVEL_TAB_BITS+100; cavlc_level_tab[suffix_length][i][1]= LEVEL_TAB_BITS; } } } } static av_cold void decode_init_vlc(void){ static int done = 0; if (!done) { int i; int offset; done = 1; chroma_dc_coeff_token_vlc.table = chroma_dc_coeff_token_vlc_table; chroma_dc_coeff_token_vlc.table_allocated = chroma_dc_coeff_token_vlc_table_size; init_vlc(&chroma_dc_coeff_token_vlc, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 4*5, &chroma_dc_coeff_token_len [0], 1, 1, &chroma_dc_coeff_token_bits[0], 1, 1, INIT_VLC_USE_NEW_STATIC); offset = 0; for(i=0; i<4; i++){ coeff_token_vlc[i].table = coeff_token_vlc_tables+offset; coeff_token_vlc[i].table_allocated = coeff_token_vlc_tables_size[i]; init_vlc(&coeff_token_vlc[i], COEFF_TOKEN_VLC_BITS, 4*17, &coeff_token_len [i][0], 1, 1, &coeff_token_bits[i][0], 1, 1, INIT_VLC_USE_NEW_STATIC); offset += coeff_token_vlc_tables_size[i]; } /* * This is a one time safety check to make sure that * the packed static coeff_token_vlc table sizes * were initialized correctly. */ assert(offset == FF_ARRAY_ELEMS(coeff_token_vlc_tables)); for(i=0; i<3; i++){ chroma_dc_total_zeros_vlc[i].table = chroma_dc_total_zeros_vlc_tables[i]; chroma_dc_total_zeros_vlc[i].table_allocated = chroma_dc_total_zeros_vlc_tables_size; init_vlc(&chroma_dc_total_zeros_vlc[i], CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 4, &chroma_dc_total_zeros_len [i][0], 1, 1, &chroma_dc_total_zeros_bits[i][0], 1, 1, INIT_VLC_USE_NEW_STATIC); } for(i=0; i<15; i++){ total_zeros_vlc[i].table = total_zeros_vlc_tables[i]; total_zeros_vlc[i].table_allocated = total_zeros_vlc_tables_size; init_vlc(&total_zeros_vlc[i], TOTAL_ZEROS_VLC_BITS, 16, &total_zeros_len [i][0], 1, 1, &total_zeros_bits[i][0], 1, 1, INIT_VLC_USE_NEW_STATIC); } for(i=0; i<6; i++){ run_vlc[i].table = run_vlc_tables[i]; run_vlc[i].table_allocated = run_vlc_tables_size; init_vlc(&run_vlc[i], RUN_VLC_BITS, 7, &run_len [i][0], 1, 1, &run_bits[i][0], 1, 1, INIT_VLC_USE_NEW_STATIC); } run7_vlc.table = run7_vlc_table, run7_vlc.table_allocated = run7_vlc_table_size; init_vlc(&run7_vlc, RUN7_VLC_BITS, 16, &run_len [6][0], 1, 1, &run_bits[6][0], 1, 1, INIT_VLC_USE_NEW_STATIC); init_cavlc_level_tab(); } } static void free_tables(H264Context *h){ int i; H264Context *hx; av_freep(&h->intra4x4_pred_mode); av_freep(&h->chroma_pred_mode_table); av_freep(&h->cbp_table); av_freep(&h->mvd_table[0]); av_freep(&h->mvd_table[1]); av_freep(&h->direct_table); av_freep(&h->non_zero_count); av_freep(&h->slice_table_base); h->slice_table= NULL; av_freep(&h->mb2b_xy); av_freep(&h->mb2b8_xy); for(i = 0; i < MAX_THREADS; i++) { hx = h->thread_context[i]; if(!hx) continue; av_freep(&hx->top_borders[1]); av_freep(&hx->top_borders[0]); av_freep(&hx->s.obmc_scratchpad); av_freep(&hx->rbsp_buffer[1]); av_freep(&hx->rbsp_buffer[0]); hx->rbsp_buffer_size[0] = 0; hx->rbsp_buffer_size[1] = 0; if (i) av_freep(&h->thread_context[i]); } } static void init_dequant8_coeff_table(H264Context *h){ int i,q,x; const int transpose = (h->s.dsp.h264_idct8_add != ff_h264_idct8_add_c); //FIXME ugly h->dequant8_coeff[0] = h->dequant8_buffer[0]; h->dequant8_coeff[1] = h->dequant8_buffer[1]; for(i=0; i<2; i++ ){ if(i && !memcmp(h->pps.scaling_matrix8[0], h->pps.scaling_matrix8[1], 64*sizeof(uint8_t))){ h->dequant8_coeff[1] = h->dequant8_buffer[0]; break; } for(q=0; q<52; q++){ int shift = div6[q]; int idx = rem6[q]; for(x=0; x<64; x++) h->dequant8_coeff[i][q][transpose ? (x>>3)|((x&7)<<3) : x] = ((uint32_t)dequant8_coeff_init[idx][ dequant8_coeff_init_scan[((x>>1)&12) | (x&3)] ] * h->pps.scaling_matrix8[i][x]) << shift; } } } static void init_dequant4_coeff_table(H264Context *h){ int i,j,q,x; const int transpose = (h->s.dsp.h264_idct_add != ff_h264_idct_add_c); //FIXME ugly for(i=0; i<6; i++ ){ h->dequant4_coeff[i] = h->dequant4_buffer[i]; for(j=0; jpps.scaling_matrix4[j], h->pps.scaling_matrix4[i], 16*sizeof(uint8_t))){ h->dequant4_coeff[i] = h->dequant4_buffer[j]; break; } } if(jdequant4_coeff[i][q][transpose ? (x>>2)|((x<<2)&0xF) : x] = ((uint32_t)dequant4_coeff_init[idx][(x&1) + ((x>>2)&1)] * h->pps.scaling_matrix4[i][x]) << shift; } } } static void init_dequant_tables(H264Context *h){ int i,x; init_dequant4_coeff_table(h); if(h->pps.transform_8x8_mode) init_dequant8_coeff_table(h); if(h->sps.transform_bypass){ for(i=0; i<6; i++) for(x=0; x<16; x++) h->dequant4_coeff[i][0][x] = 1<<6; if(h->pps.transform_8x8_mode) for(i=0; i<2; i++) for(x=0; x<64; x++) h->dequant8_coeff[i][0][x] = 1<<6; } } int ff_h264_alloc_tables(H264Context *h){ MpegEncContext * const s = &h->s; const int big_mb_num= s->mb_stride * (s->mb_height+1); int x,y; FF_ALLOCZ_OR_GOTO(h->s.avctx, h->intra4x4_pred_mode, big_mb_num * 8 * sizeof(uint8_t), fail) FF_ALLOCZ_OR_GOTO(h->s.avctx, h->non_zero_count , big_mb_num * 16 * sizeof(uint8_t), fail) FF_ALLOCZ_OR_GOTO(h->s.avctx, h->slice_table_base , (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base), fail) FF_ALLOCZ_OR_GOTO(h->s.avctx, h->cbp_table, big_mb_num * sizeof(uint16_t), fail) FF_ALLOCZ_OR_GOTO(h->s.avctx, h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t), fail) FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[0], 32*big_mb_num * sizeof(uint16_t), fail); FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[1], 32*big_mb_num * sizeof(uint16_t), fail); FF_ALLOCZ_OR_GOTO(h->s.avctx, h->direct_table, 32*big_mb_num * sizeof(uint8_t) , fail); memset(h->slice_table_base, -1, (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base)); h->slice_table= h->slice_table_base + s->mb_stride*2 + 1; FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2b_xy , big_mb_num * sizeof(uint32_t), fail); FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2b8_xy , big_mb_num * sizeof(uint32_t), fail); for(y=0; ymb_height; y++){ for(x=0; xmb_width; x++){ const int mb_xy= x + y*s->mb_stride; const int b_xy = 4*x + 4*y*h->b_stride; const int b8_xy= 2*x + 2*y*h->b8_stride; h->mb2b_xy [mb_xy]= b_xy; h->mb2b8_xy[mb_xy]= b8_xy; } } s->obmc_scratchpad = NULL; if(!h->dequant4_coeff[0]) init_dequant_tables(h); return 0; fail: free_tables(h); return -1; } /** * Mimic alloc_tables(), but for every context thread. */ static void clone_tables(H264Context *dst, H264Context *src){ dst->intra4x4_pred_mode = src->intra4x4_pred_mode; dst->non_zero_count = src->non_zero_count; dst->slice_table = src->slice_table; dst->cbp_table = src->cbp_table; dst->mb2b_xy = src->mb2b_xy; dst->mb2b8_xy = src->mb2b8_xy; dst->chroma_pred_mode_table = src->chroma_pred_mode_table; dst->mvd_table[0] = src->mvd_table[0]; dst->mvd_table[1] = src->mvd_table[1]; dst->direct_table = src->direct_table; dst->s.obmc_scratchpad = NULL; ff_h264_pred_init(&dst->hpc, src->s.codec_id); } /** * Init context * Allocate buffers which are not shared amongst multiple threads. */ static int context_init(H264Context *h){ FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[0], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail) FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[1], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail) return 0; fail: return -1; // free_tables will clean up for us } static av_cold void common_init(H264Context *h){ MpegEncContext * const s = &h->s; s->width = s->avctx->width; s->height = s->avctx->height; s->codec_id= s->avctx->codec->id; ff_h264_pred_init(&h->hpc, s->codec_id); h->dequant_coeff_pps= -1; s->unrestricted_mv=1; s->decode=1; //FIXME dsputil_init(&s->dsp, s->avctx); // needed so that idct permutation is known early memset(h->pps.scaling_matrix4, 16, 6*16*sizeof(uint8_t)); memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t)); } av_cold int ff_h264_decode_init(AVCodecContext *avctx){ H264Context *h= avctx->priv_data; MpegEncContext * const s = &h->s; MPV_decode_defaults(s); s->avctx = avctx; common_init(h); s->out_format = FMT_H264; s->workaround_bugs= avctx->workaround_bugs; // set defaults // s->decode_mb= ff_h263_decode_mb; s->quarter_sample = 1; if(!avctx->has_b_frames) s->low_delay= 1; avctx->chroma_sample_location = AVCHROMA_LOC_LEFT; decode_init_vlc(); if(avctx->extradata_size > 0 && avctx->extradata && *(char *)avctx->extradata == 1){ h->is_avc = 1; h->got_avcC = 0; } else { h->is_avc = 0; } h->thread_context[0] = h; h->outputed_poc = INT_MIN; h->prev_poc_msb= 1<<16; ff_h264_reset_sei(h); if(avctx->codec_id == CODEC_ID_H264){ if(avctx->ticks_per_frame == 1){ s->avctx->time_base.den *=2; } avctx->ticks_per_frame = 2; } return 0; } int ff_h264_frame_start(H264Context *h){ MpegEncContext * const s = &h->s; int i; if(MPV_frame_start(s, s->avctx) < 0) return -1; ff_er_frame_start(s); /* * MPV_frame_start uses pict_type to derive key_frame. * This is incorrect for H.264; IDR markings must be used. * Zero here; IDR markings per slice in frame or fields are ORed in later. * See decode_nal_units(). */ s->current_picture_ptr->key_frame= 0; s->current_picture_ptr->mmco_reset= 0; assert(s->linesize && s->uvlinesize); for(i=0; i<16; i++){ h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3); h->block_offset[24+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->linesize*((scan8[i] - scan8[0])>>3); } for(i=0; i<4; i++){ h->block_offset[16+i]= h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3); h->block_offset[24+16+i]= h->block_offset[24+20+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->uvlinesize*((scan8[i] - scan8[0])>>3); } /* can't be in alloc_tables because linesize isn't known there. * FIXME: redo bipred weight to not require extra buffer? */ for(i = 0; i < s->avctx->thread_count; i++) if(!h->thread_context[i]->s.obmc_scratchpad) h->thread_context[i]->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize); /* some macroblocks will be accessed before they're available */ if(FRAME_MBAFF || s->avctx->thread_count > 1) memset(h->slice_table, -1, (s->mb_height*s->mb_stride-1) * sizeof(*h->slice_table)); // s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1; // We mark the current picture as non-reference after allocating it, so // that if we break out due to an error it can be released automatically // in the next MPV_frame_start(). // SVQ3 as well as most other codecs have only last/next/current and thus // get released even with set reference, besides SVQ3 and others do not // mark frames as reference later "naturally". if(s->codec_id != CODEC_ID_SVQ3) s->current_picture_ptr->reference= 0; s->current_picture_ptr->field_poc[0]= s->current_picture_ptr->field_poc[1]= INT_MAX; assert(s->current_picture_ptr->long_ref==0); return 0; } static inline void backup_mb_border(H264Context *h, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr, int linesize, int uvlinesize, int simple){ MpegEncContext * const s = &h->s; int i; int step = 1; int offset = 1; int uvoffset= 1; int top_idx = 1; int skiplast= 0; src_y -= linesize; src_cb -= uvlinesize; src_cr -= uvlinesize; if(!simple && FRAME_MBAFF){ if(s->mb_y&1){ offset = MB_MBAFF ? 1 : 17; uvoffset= MB_MBAFF ? 1 : 9; if(!MB_MBAFF){ *(uint64_t*)(h->top_borders[0][s->mb_x]+ 0)= *(uint64_t*)(src_y + 15*linesize); *(uint64_t*)(h->top_borders[0][s->mb_x]+ 8)= *(uint64_t*)(src_y +8+15*linesize); if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){ *(uint64_t*)(h->top_borders[0][s->mb_x]+16)= *(uint64_t*)(src_cb+7*uvlinesize); *(uint64_t*)(h->top_borders[0][s->mb_x]+24)= *(uint64_t*)(src_cr+7*uvlinesize); } } }else{ if(!MB_MBAFF){ h->left_border[0]= h->top_borders[0][s->mb_x][15]; if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){ h->left_border[34 ]= h->top_borders[0][s->mb_x][16+7 ]; h->left_border[34+18]= h->top_borders[0][s->mb_x][16+8+7]; } skiplast= 1; } offset = uvoffset= top_idx = MB_MBAFF ? 0 : 1; } step= MB_MBAFF ? 2 : 1; } // There are two lines saved, the line above the the top macroblock of a pair, // and the line above the bottom macroblock h->left_border[offset]= h->top_borders[top_idx][s->mb_x][15]; for(i=1; i<17 - skiplast; i++){ h->left_border[offset+i*step]= src_y[15+i* linesize]; } *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+0)= *(uint64_t*)(src_y + 16*linesize); *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+8)= *(uint64_t*)(src_y +8+16*linesize); if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){ h->left_border[uvoffset+34 ]= h->top_borders[top_idx][s->mb_x][16+7]; h->left_border[uvoffset+34+18]= h->top_borders[top_idx][s->mb_x][24+7]; for(i=1; i<9 - skiplast; i++){ h->left_border[uvoffset+34 +i*step]= src_cb[7+i*uvlinesize]; h->left_border[uvoffset+34+18+i*step]= src_cr[7+i*uvlinesize]; } *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+16)= *(uint64_t*)(src_cb+8*uvlinesize); *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+24)= *(uint64_t*)(src_cr+8*uvlinesize); } } static inline void xchg_mb_border(H264Context *h, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr, int linesize, int uvlinesize, int xchg, int simple){ MpegEncContext * const s = &h->s; int temp8, i; uint64_t temp64; int deblock_left; int deblock_top; int mb_xy; int step = 1; int offset = 1; int uvoffset= 1; int top_idx = 1; if(!simple && FRAME_MBAFF){ if(s->mb_y&1){ offset = MB_MBAFF ? 1 : 17; uvoffset= MB_MBAFF ? 1 : 9; }else{ offset = uvoffset= top_idx = MB_MBAFF ? 0 : 1; } step= MB_MBAFF ? 2 : 1; } if(h->deblocking_filter == 2) { mb_xy = h->mb_xy; deblock_left = h->slice_table[mb_xy] == h->slice_table[mb_xy - 1]; deblock_top = h->slice_table[mb_xy] == h->slice_table[h->top_mb_xy]; } else { deblock_left = (s->mb_x > 0); deblock_top = (s->mb_y > !!MB_FIELD); } src_y -= linesize + 1; src_cb -= uvlinesize + 1; src_cr -= uvlinesize + 1; #define XCHG(a,b,t,xchg)\ t= a;\ if(xchg)\ a= b;\ b= t; if(deblock_left){ for(i = !deblock_top; i<16; i++){ XCHG(h->left_border[offset+i*step], src_y [i* linesize], temp8, xchg); } XCHG(h->left_border[offset+i*step], src_y [i* linesize], temp8, 1); } if(deblock_top){ XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+0), *(uint64_t*)(src_y +1), temp64, xchg); XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+8), *(uint64_t*)(src_y +9), temp64, 1); if(s->mb_x+1 < s->mb_width){ XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x+1]), *(uint64_t*)(src_y +17), temp64, 1); } } if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){ if(deblock_left){ for(i = !deblock_top; i<8; i++){ XCHG(h->left_border[uvoffset+34 +i*step], src_cb[i*uvlinesize], temp8, xchg); XCHG(h->left_border[uvoffset+34+18+i*step], src_cr[i*uvlinesize], temp8, xchg); } XCHG(h->left_border[uvoffset+34 +i*step], src_cb[i*uvlinesize], temp8, 1); XCHG(h->left_border[uvoffset+34+18+i*step], src_cr[i*uvlinesize], temp8, 1); } if(deblock_top){ XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+16), *(uint64_t*)(src_cb+1), temp64, 1); XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+24), *(uint64_t*)(src_cr+1), temp64, 1); } } } static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){ MpegEncContext * const s = &h->s; const int mb_x= s->mb_x; const int mb_y= s->mb_y; const int mb_xy= h->mb_xy; const int mb_type= s->current_picture.mb_type[mb_xy]; uint8_t *dest_y, *dest_cb, *dest_cr; int linesize, uvlinesize /*dct_offset*/; int i; int *block_offset = &h->block_offset[0]; const int transform_bypass = !simple && (s->qscale == 0 && h->sps.transform_bypass); /* is_h264 should always be true if SVQ3 is disabled. */ const int is_h264 = !CONFIG_SVQ3_DECODER || simple || s->codec_id == CODEC_ID_H264; void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride); void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride); dest_y = s->current_picture.data[0] + (mb_x + mb_y * s->linesize ) * 16; dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8; dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8; s->dsp.prefetch(dest_y + (s->mb_x&3)*4*s->linesize + 64, s->linesize, 4); s->dsp.prefetch(dest_cb + (s->mb_x&7)*s->uvlinesize + 64, dest_cr - dest_cb, 2); if (!simple && MB_FIELD) { linesize = h->mb_linesize = s->linesize * 2; uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2; block_offset = &h->block_offset[24]; if(mb_y&1){ //FIXME move out of this function? dest_y -= s->linesize*15; dest_cb-= s->uvlinesize*7; dest_cr-= s->uvlinesize*7; } if(FRAME_MBAFF) { int list; for(list=0; listlist_count; list++){ if(!USES_LIST(mb_type, list)) continue; if(IS_16X16(mb_type)){ int8_t *ref = &h->ref_cache[list][scan8[0]]; fill_rectangle(ref, 4, 4, 8, (16+*ref)^(s->mb_y&1), 1); }else{ for(i=0; i<16; i+=4){ int ref = h->ref_cache[list][scan8[i]]; if(ref >= 0) fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2, 8, (16+ref)^(s->mb_y&1), 1); } } } } } else { linesize = h->mb_linesize = s->linesize; uvlinesize = h->mb_uvlinesize = s->uvlinesize; // dct_offset = s->linesize * 16; } if (!simple && IS_INTRA_PCM(mb_type)) { for (i=0; i<16; i++) { memcpy(dest_y + i* linesize, h->mb + i*8, 16); } for (i=0; i<8; i++) { memcpy(dest_cb+ i*uvlinesize, h->mb + 128 + i*4, 8); memcpy(dest_cr+ i*uvlinesize, h->mb + 160 + i*4, 8); } } else { if(IS_INTRA(mb_type)){ if(h->deblocking_filter) xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1, simple); if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){ h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize); h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize); } if(IS_INTRA4x4(mb_type)){ if(simple || !s->encoding){ if(IS_8x8DCT(mb_type)){ if(transform_bypass){ idct_dc_add = idct_add = s->dsp.add_pixels8; }else{ idct_dc_add = s->dsp.h264_idct8_dc_add; idct_add = s->dsp.h264_idct8_add; } for(i=0; i<16; i+=4){ uint8_t * const ptr= dest_y + block_offset[i]; const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ]; if(transform_bypass && h->sps.profile_idc==244 && dir<=1){ h->hpc.pred8x8l_add[dir](ptr, h->mb + i*16, linesize); }else{ const int nnz = h->non_zero_count_cache[ scan8[i] ]; h->hpc.pred8x8l[ dir ](ptr, (h->topleft_samples_available<topright_samples_available<mb[i*16]) idct_dc_add(ptr, h->mb + i*16, linesize); else idct_add (ptr, h->mb + i*16, linesize); } } } }else{ if(transform_bypass){ idct_dc_add = idct_add = s->dsp.add_pixels4; }else{ idct_dc_add = s->dsp.h264_idct_dc_add; idct_add = s->dsp.h264_idct_add; } for(i=0; i<16; i++){ uint8_t * const ptr= dest_y + block_offset[i]; const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ]; if(transform_bypass && h->sps.profile_idc==244 && dir<=1){ h->hpc.pred4x4_add[dir](ptr, h->mb + i*16, linesize); }else{ uint8_t *topright; int nnz, tr; if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){ const int topright_avail= (h->topright_samples_available<hpc.pred4x4[ dir ](ptr, topright, linesize); nnz = h->non_zero_count_cache[ scan8[i] ]; if(nnz){ if(is_h264){ if(nnz == 1 && h->mb[i*16]) idct_dc_add(ptr, h->mb + i*16, linesize); else idct_add (ptr, h->mb + i*16, linesize); }else svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0); } } } } } }else{ h->hpc.pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize); if(is_h264){ if(!transform_bypass) h264_luma_dc_dequant_idct_c(h->mb, s->qscale, h->dequant4_coeff[0][s->qscale][0]); }else svq3_luma_dc_dequant_idct_c(h->mb, s->qscale); } if(h->deblocking_filter) xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0, simple); }else if(is_h264){ hl_motion(h, dest_y, dest_cb, dest_cr, s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab, s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab, s->dsp.weight_h264_pixels_tab, s->dsp.biweight_h264_pixels_tab); } if(!IS_INTRA4x4(mb_type)){ if(is_h264){ if(IS_INTRA16x16(mb_type)){ if(transform_bypass){ if(h->sps.profile_idc==244 && (h->intra16x16_pred_mode==VERT_PRED8x8 || h->intra16x16_pred_mode==HOR_PRED8x8)){ h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset, h->mb, linesize); }else{ for(i=0; i<16; i++){ if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]) s->dsp.add_pixels4(dest_y + block_offset[i], h->mb + i*16, linesize); } } }else{ s->dsp.h264_idct_add16intra(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache); } }else if(h->cbp&15){ if(transform_bypass){ const int di = IS_8x8DCT(mb_type) ? 4 : 1; idct_add= IS_8x8DCT(mb_type) ? s->dsp.add_pixels8 : s->dsp.add_pixels4; for(i=0; i<16; i+=di){ if(h->non_zero_count_cache[ scan8[i] ]){ idct_add(dest_y + block_offset[i], h->mb + i*16, linesize); } } }else{ if(IS_8x8DCT(mb_type)){ s->dsp.h264_idct8_add4(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache); }else{ s->dsp.h264_idct_add16(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache); } } } }else{ for(i=0; i<16; i++){ if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below uint8_t * const ptr= dest_y + block_offset[i]; svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0); } } } } if((simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)) && (h->cbp&0x30)){ uint8_t *dest[2] = {dest_cb, dest_cr}; if(transform_bypass){ if(IS_INTRA(mb_type) && h->sps.profile_idc==244 && (h->chroma_pred_mode==VERT_PRED8x8 || h->chroma_pred_mode==HOR_PRED8x8)){ h->hpc.pred8x8_add[h->chroma_pred_mode](dest[0], block_offset + 16, h->mb + 16*16, uvlinesize); h->hpc.pred8x8_add[h->chroma_pred_mode](dest[1], block_offset + 20, h->mb + 20*16, uvlinesize); }else{ idct_add = s->dsp.add_pixels4; for(i=16; i<16+8; i++){ if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]) idct_add (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize); } } }else{ chroma_dc_dequant_idct_c(h->mb + 16*16, h->chroma_qp[0], h->dequant4_coeff[IS_INTRA(mb_type) ? 1:4][h->chroma_qp[0]][0]); chroma_dc_dequant_idct_c(h->mb + 16*16+4*16, h->chroma_qp[1], h->dequant4_coeff[IS_INTRA(mb_type) ? 2:5][h->chroma_qp[1]][0]); if(is_h264){ idct_add = s->dsp.h264_idct_add; idct_dc_add = s->dsp.h264_idct_dc_add; for(i=16; i<16+8; i++){ if(h->non_zero_count_cache[ scan8[i] ]) idct_add (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize); else if(h->mb[i*16]) idct_dc_add(dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize); } }else{ for(i=16; i<16+8; i++){ if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ uint8_t * const ptr= dest[(i&4)>>2] + block_offset[i]; svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, ff_h264_chroma_qp[s->qscale + 12] - 12, 2); } } } } } } if(h->cbp || IS_INTRA(mb_type)) s->dsp.clear_blocks(h->mb); if(h->deblocking_filter) { backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, simple); fill_caches(h, mb_type, 1); //FIXME don't fill stuff which isn't used by filter_mb h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]); h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]); if (!simple && FRAME_MBAFF) { ff_h264_filter_mb (h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize); } else { ff_h264_filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize); } } } /** * Process a macroblock; this case avoids checks for expensive uncommon cases. */ static void hl_decode_mb_simple(H264Context *h){ hl_decode_mb_internal(h, 1); } /** * Process a macroblock; this handles edge cases, such as interlacing. */ static void av_noinline hl_decode_mb_complex(H264Context *h){ hl_decode_mb_internal(h, 0); } void ff_h264_hl_decode_mb(H264Context *h){ MpegEncContext * const s = &h->s; const int mb_xy= h->mb_xy; const int mb_type= s->current_picture.mb_type[mb_xy]; int is_complex = CONFIG_SMALL || h->is_complex || IS_INTRA_PCM(mb_type) || s->qscale == 0; if (is_complex) hl_decode_mb_complex(h); else hl_decode_mb_simple(h); } static void pic_as_field(Picture *pic, const int parity){ int i; for (i = 0; i < 4; ++i) { if (parity == PICT_BOTTOM_FIELD) pic->data[i] += pic->linesize[i]; pic->reference = parity; pic->linesize[i] *= 2; } pic->poc= pic->field_poc[parity == PICT_BOTTOM_FIELD]; } static int split_field_copy(Picture *dest, Picture *src, int parity, int id_add){ int match = !!(src->reference & parity); if (match) { *dest = *src; if(parity != PICT_FRAME){ pic_as_field(dest, parity); dest->pic_id *= 2; dest->pic_id += id_add; } } return match; } static int build_def_list(Picture *def, Picture **in, int len, int is_long, int sel){ int i[2]={0}; int index=0; while(i[0]reference & sel))) i[0]++; while(i[1]reference & (sel^3)))) i[1]++; if(i[0] < len){ in[ i[0] ]->pic_id= is_long ? i[0] : in[ i[0] ]->frame_num; split_field_copy(&def[index++], in[ i[0]++ ], sel , 1); } if(i[1] < len){ in[ i[1] ]->pic_id= is_long ? i[1] : in[ i[1] ]->frame_num; split_field_copy(&def[index++], in[ i[1]++ ], sel^3, 0); } } return index; } static int add_sorted(Picture **sorted, Picture **src, int len, int limit, int dir){ int i, best_poc; int out_i= 0; for(;;){ best_poc= dir ? INT_MIN : INT_MAX; for(i=0; ipoc; if(((poc > limit) ^ dir) && ((poc < best_poc) ^ dir)){ best_poc= poc; sorted[out_i]= src[i]; } } if(best_poc == (dir ? INT_MIN : INT_MAX)) break; limit= sorted[out_i++]->poc - dir; } return out_i; } /** * fills the default_ref_list. */ static int fill_default_ref_list(H264Context *h){ MpegEncContext * const s = &h->s; int i, len; if(h->slice_type_nos==FF_B_TYPE){ Picture *sorted[32]; int cur_poc, list; int lens[2]; if(FIELD_PICTURE) cur_poc= s->current_picture_ptr->field_poc[ s->picture_structure == PICT_BOTTOM_FIELD ]; else cur_poc= s->current_picture_ptr->poc; for(list= 0; list<2; list++){ len= add_sorted(sorted , h->short_ref, h->short_ref_count, cur_poc, 1^list); len+=add_sorted(sorted+len, h->short_ref, h->short_ref_count, cur_poc, 0^list); assert(len<=32); len= build_def_list(h->default_ref_list[list] , sorted , len, 0, s->picture_structure); len+=build_def_list(h->default_ref_list[list]+len, h->long_ref, 16 , 1, s->picture_structure); assert(len<=32); if(len < h->ref_count[list]) memset(&h->default_ref_list[list][len], 0, sizeof(Picture)*(h->ref_count[list] - len)); lens[list]= len; } if(lens[0] == lens[1] && lens[1] > 1){ for(i=0; h->default_ref_list[0][i].data[0] == h->default_ref_list[1][i].data[0] && idefault_ref_list[1][0], h->default_ref_list[1][1]); } }else{ len = build_def_list(h->default_ref_list[0] , h->short_ref, h->short_ref_count, 0, s->picture_structure); len+= build_def_list(h->default_ref_list[0]+len, h-> long_ref, 16 , 1, s->picture_structure); assert(len <= 32); if(len < h->ref_count[0]) memset(&h->default_ref_list[0][len], 0, sizeof(Picture)*(h->ref_count[0] - len)); } #ifdef TRACE for (i=0; iref_count[0]; i++) { tprintf(h->s.avctx, "List0: %s fn:%d 0x%p\n", (h->default_ref_list[0][i].long_ref ? "LT" : "ST"), h->default_ref_list[0][i].pic_id, h->default_ref_list[0][i].data[0]); } if(h->slice_type_nos==FF_B_TYPE){ for (i=0; iref_count[1]; i++) { tprintf(h->s.avctx, "List1: %s fn:%d 0x%p\n", (h->default_ref_list[1][i].long_ref ? "LT" : "ST"), h->default_ref_list[1][i].pic_id, h->default_ref_list[1][i].data[0]); } } #endif return 0; } static void print_short_term(H264Context *h); static void print_long_term(H264Context *h); /** * Extract structure information about the picture described by pic_num in * the current decoding context (frame or field). Note that pic_num is * picture number without wrapping (so, 0<=pic_nums; *structure = s->picture_structure; if(FIELD_PICTURE){ if (!(pic_num & 1)) /* opposite field */ *structure ^= PICT_FRAME; pic_num >>= 1; } return pic_num; } static int decode_ref_pic_list_reordering(H264Context *h){ MpegEncContext * const s = &h->s; int list, index, pic_structure; print_short_term(h); print_long_term(h); for(list=0; listlist_count; list++){ memcpy(h->ref_list[list], h->default_ref_list[list], sizeof(Picture)*h->ref_count[list]); if(get_bits1(&s->gb)){ int pred= h->curr_pic_num; for(index=0; ; index++){ unsigned int reordering_of_pic_nums_idc= get_ue_golomb_31(&s->gb); unsigned int pic_id; int i; Picture *ref = NULL; if(reordering_of_pic_nums_idc==3) break; if(index >= h->ref_count[list]){ av_log(h->s.avctx, AV_LOG_ERROR, "reference count overflow\n"); return -1; } if(reordering_of_pic_nums_idc<3){ if(reordering_of_pic_nums_idc<2){ const unsigned int abs_diff_pic_num= get_ue_golomb(&s->gb) + 1; int frame_num; if(abs_diff_pic_num > h->max_pic_num){ av_log(h->s.avctx, AV_LOG_ERROR, "abs_diff_pic_num overflow\n"); return -1; } if(reordering_of_pic_nums_idc == 0) pred-= abs_diff_pic_num; else pred+= abs_diff_pic_num; pred &= h->max_pic_num - 1; frame_num = pic_num_extract(h, pred, &pic_structure); for(i= h->short_ref_count-1; i>=0; i--){ ref = h->short_ref[i]; assert(ref->reference); assert(!ref->long_ref); if( ref->frame_num == frame_num && (ref->reference & pic_structure) ) break; } if(i>=0) ref->pic_id= pred; }else{ int long_idx; pic_id= get_ue_golomb(&s->gb); //long_term_pic_idx long_idx= pic_num_extract(h, pic_id, &pic_structure); if(long_idx>31){ av_log(h->s.avctx, AV_LOG_ERROR, "long_term_pic_idx overflow\n"); return -1; } ref = h->long_ref[long_idx]; assert(!(ref && !ref->reference)); if(ref && (ref->reference & pic_structure)){ ref->pic_id= pic_id; assert(ref->long_ref); i=0; }else{ i=-1; } } if (i < 0) { av_log(h->s.avctx, AV_LOG_ERROR, "reference picture missing during reorder\n"); memset(&h->ref_list[list][index], 0, sizeof(Picture)); //FIXME } else { for(i=index; i+1ref_count[list]; i++){ if(ref->long_ref == h->ref_list[list][i].long_ref && ref->pic_id == h->ref_list[list][i].pic_id) break; } for(; i > index; i--){ h->ref_list[list][i]= h->ref_list[list][i-1]; } h->ref_list[list][index]= *ref; if (FIELD_PICTURE){ pic_as_field(&h->ref_list[list][index], pic_structure); } } }else{ av_log(h->s.avctx, AV_LOG_ERROR, "illegal reordering_of_pic_nums_idc\n"); return -1; } } } } for(list=0; listlist_count; list++){ for(index= 0; index < h->ref_count[list]; index++){ if(!h->ref_list[list][index].data[0]){ av_log(h->s.avctx, AV_LOG_ERROR, "Missing reference picture\n"); if(h->default_ref_list[list][0].data[0]) h->ref_list[list][index]= h->default_ref_list[list][0]; else return -1; } } } return 0; } static void fill_mbaff_ref_list(H264Context *h){ int list, i, j; for(list=0; list<2; list++){ //FIXME try list_count for(i=0; iref_count[list]; i++){ Picture *frame = &h->ref_list[list][i]; Picture *field = &h->ref_list[list][16+2*i]; field[0] = *frame; for(j=0; j<3; j++) field[0].linesize[j] <<= 1; field[0].reference = PICT_TOP_FIELD; field[0].poc= field[0].field_poc[0]; field[1] = field[0]; for(j=0; j<3; j++) field[1].data[j] += frame->linesize[j]; field[1].reference = PICT_BOTTOM_FIELD; field[1].poc= field[1].field_poc[1]; h->luma_weight[list][16+2*i] = h->luma_weight[list][16+2*i+1] = h->luma_weight[list][i]; h->luma_offset[list][16+2*i] = h->luma_offset[list][16+2*i+1] = h->luma_offset[list][i]; for(j=0; j<2; j++){ h->chroma_weight[list][16+2*i][j] = h->chroma_weight[list][16+2*i+1][j] = h->chroma_weight[list][i][j]; h->chroma_offset[list][16+2*i][j] = h->chroma_offset[list][16+2*i+1][j] = h->chroma_offset[list][i][j]; } } } for(j=0; jref_count[1]; j++){ for(i=0; iref_count[0]; i++) h->implicit_weight[j][16+2*i] = h->implicit_weight[j][16+2*i+1] = h->implicit_weight[j][i]; memcpy(h->implicit_weight[16+2*j], h->implicit_weight[j], sizeof(*h->implicit_weight)); memcpy(h->implicit_weight[16+2*j+1], h->implicit_weight[j], sizeof(*h->implicit_weight)); } } static int pred_weight_table(H264Context *h){ MpegEncContext * const s = &h->s; int list, i; int luma_def, chroma_def; h->use_weight= 0; h->use_weight_chroma= 0; h->luma_log2_weight_denom= get_ue_golomb(&s->gb); h->chroma_log2_weight_denom= get_ue_golomb(&s->gb); luma_def = 1<luma_log2_weight_denom; chroma_def = 1<chroma_log2_weight_denom; for(list=0; list<2; list++){ h->luma_weight_flag[list] = 0; h->chroma_weight_flag[list] = 0; for(i=0; iref_count[list]; i++){ int luma_weight_flag, chroma_weight_flag; luma_weight_flag= get_bits1(&s->gb); if(luma_weight_flag){ h->luma_weight[list][i]= get_se_golomb(&s->gb); h->luma_offset[list][i]= get_se_golomb(&s->gb); if( h->luma_weight[list][i] != luma_def || h->luma_offset[list][i] != 0) { h->use_weight= 1; h->luma_weight_flag[list]= 1; } }else{ h->luma_weight[list][i]= luma_def; h->luma_offset[list][i]= 0; } if(CHROMA){ chroma_weight_flag= get_bits1(&s->gb); if(chroma_weight_flag){ int j; for(j=0; j<2; j++){ h->chroma_weight[list][i][j]= get_se_golomb(&s->gb); h->chroma_offset[list][i][j]= get_se_golomb(&s->gb); if( h->chroma_weight[list][i][j] != chroma_def || h->chroma_offset[list][i][j] != 0) { h->use_weight_chroma= 1; h->chroma_weight_flag[list]= 1; } } }else{ int j; for(j=0; j<2; j++){ h->chroma_weight[list][i][j]= chroma_def; h->chroma_offset[list][i][j]= 0; } } } } if(h->slice_type_nos != FF_B_TYPE) break; } h->use_weight= h->use_weight || h->use_weight_chroma; return 0; } static void implicit_weight_table(H264Context *h){ MpegEncContext * const s = &h->s; int ref0, ref1, i; int cur_poc = s->current_picture_ptr->poc; for (i = 0; i < 2; i++) { h->luma_weight_flag[i] = 0; h->chroma_weight_flag[i] = 0; } if( h->ref_count[0] == 1 && h->ref_count[1] == 1 && h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2*cur_poc){ h->use_weight= 0; h->use_weight_chroma= 0; return; } h->use_weight= 2; h->use_weight_chroma= 2; h->luma_log2_weight_denom= 5; h->chroma_log2_weight_denom= 5; for(ref0=0; ref0 < h->ref_count[0]; ref0++){ int poc0 = h->ref_list[0][ref0].poc; for(ref1=0; ref1 < h->ref_count[1]; ref1++){ int poc1 = h->ref_list[1][ref1].poc; int td = av_clip(poc1 - poc0, -128, 127); if(td){ int tb = av_clip(cur_poc - poc0, -128, 127); int tx = (16384 + (FFABS(td) >> 1)) / td; int dist_scale_factor = av_clip((tb*tx + 32) >> 6, -1024, 1023) >> 2; if(dist_scale_factor < -64 || dist_scale_factor > 128) h->implicit_weight[ref0][ref1] = 32; else h->implicit_weight[ref0][ref1] = 64 - dist_scale_factor; }else h->implicit_weight[ref0][ref1] = 32; } } } /** * Mark a picture as no longer needed for reference. The refmask * argument allows unreferencing of individual fields or the whole frame. * If the picture becomes entirely unreferenced, but is being held for * display purposes, it is marked as such. * @param refmask mask of fields to unreference; the mask is bitwise * anded with the reference marking of pic * @return non-zero if pic becomes entirely unreferenced (except possibly * for display purposes) zero if one of the fields remains in * reference */ static inline int unreference_pic(H264Context *h, Picture *pic, int refmask){ int i; if (pic->reference &= refmask) { return 0; } else { for(i = 0; h->delayed_pic[i]; i++) if(pic == h->delayed_pic[i]){ pic->reference=DELAYED_PIC_REF; break; } return 1; } } /** * instantaneous decoder refresh. */ static void idr(H264Context *h){ int i; for(i=0; i<16; i++){ remove_long(h, i, 0); } assert(h->long_ref_count==0); for(i=0; ishort_ref_count; i++){ unreference_pic(h, h->short_ref[i], 0); h->short_ref[i]= NULL; } h->short_ref_count=0; h->prev_frame_num= 0; h->prev_frame_num_offset= 0; h->prev_poc_msb= h->prev_poc_lsb= 0; } /* forget old pics after a seek */ static void flush_dpb(AVCodecContext *avctx){ H264Context *h= avctx->priv_data; int i; for(i=0; idelayed_pic[i]) h->delayed_pic[i]->reference= 0; h->delayed_pic[i]= NULL; } h->outputed_poc= INT_MIN; h->prev_interlaced_frame = 1; idr(h); if(h->s.current_picture_ptr) h->s.current_picture_ptr->reference= 0; h->s.first_field= 0; ff_h264_reset_sei(h); ff_mpeg_flush(avctx); } /** * Find a Picture in the short term reference list by frame number. * @param frame_num frame number to search for * @param idx the index into h->short_ref where returned picture is found * undefined if no picture found. * @return pointer to the found picture, or NULL if no pic with the provided * frame number is found */ static Picture * find_short(H264Context *h, int frame_num, int *idx){ MpegEncContext * const s = &h->s; int i; for(i=0; ishort_ref_count; i++){ Picture *pic= h->short_ref[i]; if(s->avctx->debug&FF_DEBUG_MMCO) av_log(h->s.avctx, AV_LOG_DEBUG, "%d %d %p\n", i, pic->frame_num, pic); if(pic->frame_num == frame_num) { *idx = i; return pic; } } return NULL; } /** * Remove a picture from the short term reference list by its index in * that list. This does no checking on the provided index; it is assumed * to be valid. Other list entries are shifted down. * @param i index into h->short_ref of picture to remove. */ static void remove_short_at_index(H264Context *h, int i){ assert(i >= 0 && i < h->short_ref_count); h->short_ref[i]= NULL; if (--h->short_ref_count) memmove(&h->short_ref[i], &h->short_ref[i+1], (h->short_ref_count - i)*sizeof(Picture*)); } /** * * @return the removed picture or NULL if an error occurs */ static Picture * remove_short(H264Context *h, int frame_num, int ref_mask){ MpegEncContext * const s = &h->s; Picture *pic; int i; if(s->avctx->debug&FF_DEBUG_MMCO) av_log(h->s.avctx, AV_LOG_DEBUG, "remove short %d count %d\n", frame_num, h->short_ref_count); pic = find_short(h, frame_num, &i); if (pic){ if(unreference_pic(h, pic, ref_mask)) remove_short_at_index(h, i); } return pic; } /** * Remove a picture from the long term reference list by its index in * that list. * @return the removed picture or NULL if an error occurs */ static Picture * remove_long(H264Context *h, int i, int ref_mask){ Picture *pic; pic= h->long_ref[i]; if (pic){ if(unreference_pic(h, pic, ref_mask)){ assert(h->long_ref[i]->long_ref == 1); h->long_ref[i]->long_ref= 0; h->long_ref[i]= NULL; h->long_ref_count--; } } return pic; } /** * print short term list */ static void print_short_term(H264Context *h) { uint32_t i; if(h->s.avctx->debug&FF_DEBUG_MMCO) { av_log(h->s.avctx, AV_LOG_DEBUG, "short term list:\n"); for(i=0; ishort_ref_count; i++){ Picture *pic= h->short_ref[i]; av_log(h->s.avctx, AV_LOG_DEBUG, "%d fn:%d poc:%d %p\n", i, pic->frame_num, pic->poc, pic->data[0]); } } } /** * print long term list */ static void print_long_term(H264Context *h) { uint32_t i; if(h->s.avctx->debug&FF_DEBUG_MMCO) { av_log(h->s.avctx, AV_LOG_DEBUG, "long term list:\n"); for(i = 0; i < 16; i++){ Picture *pic= h->long_ref[i]; if (pic) { av_log(h->s.avctx, AV_LOG_DEBUG, "%d fn:%d poc:%d %p\n", i, pic->frame_num, pic->poc, pic->data[0]); } } } } /** * Executes the reference picture marking (memory management control operations). */ static int execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count){ MpegEncContext * const s = &h->s; int i, av_uninit(j); int current_ref_assigned=0; Picture *av_uninit(pic); if((s->avctx->debug&FF_DEBUG_MMCO) && mmco_count==0) av_log(h->s.avctx, AV_LOG_DEBUG, "no mmco here\n"); for(i=0; iavctx->debug&FF_DEBUG_MMCO) av_log(h->s.avctx, AV_LOG_DEBUG, "mmco:%d %d %d\n", h->mmco[i].opcode, h->mmco[i].short_pic_num, h->mmco[i].long_arg); if( mmco[i].opcode == MMCO_SHORT2UNUSED || mmco[i].opcode == MMCO_SHORT2LONG){ frame_num = pic_num_extract(h, mmco[i].short_pic_num, &structure); pic = find_short(h, frame_num, &j); if(!pic){ if(mmco[i].opcode != MMCO_SHORT2LONG || !h->long_ref[mmco[i].long_arg] || h->long_ref[mmco[i].long_arg]->frame_num != frame_num) av_log(h->s.avctx, AV_LOG_ERROR, "mmco: unref short failure\n"); continue; } } switch(mmco[i].opcode){ case MMCO_SHORT2UNUSED: if(s->avctx->debug&FF_DEBUG_MMCO) av_log(h->s.avctx, AV_LOG_DEBUG, "mmco: unref short %d count %d\n", h->mmco[i].short_pic_num, h->short_ref_count); remove_short(h, frame_num, structure ^ PICT_FRAME); break; case MMCO_SHORT2LONG: if (h->long_ref[mmco[i].long_arg] != pic) remove_long(h, mmco[i].long_arg, 0); remove_short_at_index(h, j); h->long_ref[ mmco[i].long_arg ]= pic; if (h->long_ref[ mmco[i].long_arg ]){ h->long_ref[ mmco[i].long_arg ]->long_ref=1; h->long_ref_count++; } break; case MMCO_LONG2UNUSED: j = pic_num_extract(h, mmco[i].long_arg, &structure); pic = h->long_ref[j]; if (pic) { remove_long(h, j, structure ^ PICT_FRAME); } else if(s->avctx->debug&FF_DEBUG_MMCO) av_log(h->s.avctx, AV_LOG_DEBUG, "mmco: unref long failure\n"); break; case MMCO_LONG: // Comment below left from previous code as it is an interresting note. /* First field in pair is in short term list or * at a different long term index. * This is not allowed; see 7.4.3.3, notes 2 and 3. * Report the problem and keep the pair where it is, * and mark this field valid. */ if (h->long_ref[mmco[i].long_arg] != s->current_picture_ptr) { remove_long(h, mmco[i].long_arg, 0); h->long_ref[ mmco[i].long_arg ]= s->current_picture_ptr; h->long_ref[ mmco[i].long_arg ]->long_ref=1; h->long_ref_count++; } s->current_picture_ptr->reference |= s->picture_structure; current_ref_assigned=1; break; case MMCO_SET_MAX_LONG: assert(mmco[i].long_arg <= 16); // just remove the long term which index is greater than new max for(j = mmco[i].long_arg; j<16; j++){ remove_long(h, j, 0); } break; case MMCO_RESET: while(h->short_ref_count){ remove_short(h, h->short_ref[0]->frame_num, 0); } for(j = 0; j < 16; j++) { remove_long(h, j, 0); } s->current_picture_ptr->poc= s->current_picture_ptr->field_poc[0]= s->current_picture_ptr->field_poc[1]= h->poc_lsb= h->poc_msb= h->frame_num= s->current_picture_ptr->frame_num= 0; s->current_picture_ptr->mmco_reset=1; break; default: assert(0); } } if (!current_ref_assigned) { /* Second field of complementary field pair; the first field of * which is already referenced. If short referenced, it * should be first entry in short_ref. If not, it must exist * in long_ref; trying to put it on the short list here is an * error in the encoded bit stream (ref: 7.4.3.3, NOTE 2 and 3). */ if (h->short_ref_count && h->short_ref[0] == s->current_picture_ptr) { /* Just mark the second field valid */ s->current_picture_ptr->reference = PICT_FRAME; } else if (s->current_picture_ptr->long_ref) { av_log(h->s.avctx, AV_LOG_ERROR, "illegal short term reference " "assignment for second field " "in complementary field pair " "(first field is long term)\n"); } else { pic= remove_short(h, s->current_picture_ptr->frame_num, 0); if(pic){ av_log(h->s.avctx, AV_LOG_ERROR, "illegal short term buffer state detected\n"); } if(h->short_ref_count) memmove(&h->short_ref[1], &h->short_ref[0], h->short_ref_count*sizeof(Picture*)); h->short_ref[0]= s->current_picture_ptr; h->short_ref_count++; s->current_picture_ptr->reference |= s->picture_structure; } } if (h->long_ref_count + h->short_ref_count > h->sps.ref_frame_count){ /* We have too many reference frames, probably due to corrupted * stream. Need to discard one frame. Prevents overrun of the * short_ref and long_ref buffers. */ av_log(h->s.avctx, AV_LOG_ERROR, "number of reference frames exceeds max (probably " "corrupt input), discarding one\n"); if (h->long_ref_count && !h->short_ref_count) { for (i = 0; i < 16; ++i) if (h->long_ref[i]) break; assert(i < 16); remove_long(h, i, 0); } else { pic = h->short_ref[h->short_ref_count - 1]; remove_short(h, pic->frame_num, 0); } } print_short_term(h); print_long_term(h); return 0; } static int decode_ref_pic_marking(H264Context *h, GetBitContext *gb){ MpegEncContext * const s = &h->s; int i; h->mmco_index= 0; if(h->nal_unit_type == NAL_IDR_SLICE){ //FIXME fields s->broken_link= get_bits1(gb) -1; if(get_bits1(gb)){ h->mmco[0].opcode= MMCO_LONG; h->mmco[0].long_arg= 0; h->mmco_index= 1; } }else{ if(get_bits1(gb)){ // adaptive_ref_pic_marking_mode_flag for(i= 0; immco[i].opcode= opcode; if(opcode==MMCO_SHORT2UNUSED || opcode==MMCO_SHORT2LONG){ h->mmco[i].short_pic_num= (h->curr_pic_num - get_ue_golomb(gb) - 1) & (h->max_pic_num - 1); /* if(h->mmco[i].short_pic_num >= h->short_ref_count || h->short_ref[ h->mmco[i].short_pic_num ] == NULL){ av_log(s->avctx, AV_LOG_ERROR, "illegal short ref in memory management control operation %d\n", mmco); return -1; }*/ } if(opcode==MMCO_SHORT2LONG || opcode==MMCO_LONG2UNUSED || opcode==MMCO_LONG || opcode==MMCO_SET_MAX_LONG){ unsigned int long_arg= get_ue_golomb_31(gb); if(long_arg >= 32 || (long_arg >= 16 && !(opcode == MMCO_LONG2UNUSED && FIELD_PICTURE))){ av_log(h->s.avctx, AV_LOG_ERROR, "illegal long ref in memory management control operation %d\n", opcode); return -1; } h->mmco[i].long_arg= long_arg; } if(opcode > (unsigned)MMCO_LONG){ av_log(h->s.avctx, AV_LOG_ERROR, "illegal memory management control operation %d\n", opcode); return -1; } if(opcode == MMCO_END) break; } h->mmco_index= i; }else{ assert(h->long_ref_count + h->short_ref_count <= h->sps.ref_frame_count); if(h->short_ref_count && h->long_ref_count + h->short_ref_count == h->sps.ref_frame_count && !(FIELD_PICTURE && !s->first_field && s->current_picture_ptr->reference)) { h->mmco[0].opcode= MMCO_SHORT2UNUSED; h->mmco[0].short_pic_num= h->short_ref[ h->short_ref_count - 1 ]->frame_num; h->mmco_index= 1; if (FIELD_PICTURE) { h->mmco[0].short_pic_num *= 2; h->mmco[1].opcode= MMCO_SHORT2UNUSED; h->mmco[1].short_pic_num= h->mmco[0].short_pic_num + 1; h->mmco_index= 2; } } } } return 0; } static int init_poc(H264Context *h){ MpegEncContext * const s = &h->s; const int max_frame_num= 1<sps.log2_max_frame_num; int field_poc[2]; Picture *cur = s->current_picture_ptr; h->frame_num_offset= h->prev_frame_num_offset; if(h->frame_num < h->prev_frame_num) h->frame_num_offset += max_frame_num; if(h->sps.poc_type==0){ const int max_poc_lsb= 1<sps.log2_max_poc_lsb; if (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2) h->poc_msb = h->prev_poc_msb + max_poc_lsb; else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2) h->poc_msb = h->prev_poc_msb - max_poc_lsb; else h->poc_msb = h->prev_poc_msb; //printf("poc: %d %d\n", h->poc_msb, h->poc_lsb); field_poc[0] = field_poc[1] = h->poc_msb + h->poc_lsb; if(s->picture_structure == PICT_FRAME) field_poc[1] += h->delta_poc_bottom; }else if(h->sps.poc_type==1){ int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc; int i; if(h->sps.poc_cycle_length != 0) abs_frame_num = h->frame_num_offset + h->frame_num; else abs_frame_num = 0; if(h->nal_ref_idc==0 && abs_frame_num > 0) abs_frame_num--; expected_delta_per_poc_cycle = 0; for(i=0; i < h->sps.poc_cycle_length; i++) expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse if(abs_frame_num > 0){ int poc_cycle_cnt = (abs_frame_num - 1) / h->sps.poc_cycle_length; int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length; expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle; for(i = 0; i <= frame_num_in_poc_cycle; i++) expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ]; } else expectedpoc = 0; if(h->nal_ref_idc == 0) expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic; field_poc[0] = expectedpoc + h->delta_poc[0]; field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field; if(s->picture_structure == PICT_FRAME) field_poc[1] += h->delta_poc[1]; }else{ int poc= 2*(h->frame_num_offset + h->frame_num); if(!h->nal_ref_idc) poc--; field_poc[0]= poc; field_poc[1]= poc; } if(s->picture_structure != PICT_BOTTOM_FIELD) s->current_picture_ptr->field_poc[0]= field_poc[0]; if(s->picture_structure != PICT_TOP_FIELD) s->current_picture_ptr->field_poc[1]= field_poc[1]; cur->poc= FFMIN(cur->field_poc[0], cur->field_poc[1]); return 0; } /** * initialize scan tables */ static void init_scan_tables(H264Context *h){ MpegEncContext * const s = &h->s; int i; if(s->dsp.h264_idct_add == ff_h264_idct_add_c){ //FIXME little ugly memcpy(h->zigzag_scan, zigzag_scan, 16*sizeof(uint8_t)); memcpy(h-> field_scan, field_scan, 16*sizeof(uint8_t)); }else{ for(i=0; i<16; i++){ #define T(x) (x>>2) | ((x<<2) & 0xF) h->zigzag_scan[i] = T(zigzag_scan[i]); h-> field_scan[i] = T( field_scan[i]); #undef T } } if(s->dsp.h264_idct8_add == ff_h264_idct8_add_c){ memcpy(h->zigzag_scan8x8, ff_zigzag_direct, 64*sizeof(uint8_t)); memcpy(h->zigzag_scan8x8_cavlc, zigzag_scan8x8_cavlc, 64*sizeof(uint8_t)); memcpy(h->field_scan8x8, field_scan8x8, 64*sizeof(uint8_t)); memcpy(h->field_scan8x8_cavlc, field_scan8x8_cavlc, 64*sizeof(uint8_t)); }else{ for(i=0; i<64; i++){ #define T(x) (x>>3) | ((x&7)<<3) h->zigzag_scan8x8[i] = T(ff_zigzag_direct[i]); h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]); h->field_scan8x8[i] = T(field_scan8x8[i]); h->field_scan8x8_cavlc[i] = T(field_scan8x8_cavlc[i]); #undef T } } if(h->sps.transform_bypass){ //FIXME same ugly h->zigzag_scan_q0 = zigzag_scan; h->zigzag_scan8x8_q0 = ff_zigzag_direct; h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc; h->field_scan_q0 = field_scan; h->field_scan8x8_q0 = field_scan8x8; h->field_scan8x8_cavlc_q0 = field_scan8x8_cavlc; }else{ h->zigzag_scan_q0 = h->zigzag_scan; h->zigzag_scan8x8_q0 = h->zigzag_scan8x8; h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc; h->field_scan_q0 = h->field_scan; h->field_scan8x8_q0 = h->field_scan8x8; h->field_scan8x8_cavlc_q0 = h->field_scan8x8_cavlc; } } static void field_end(H264Context *h){ MpegEncContext * const s = &h->s; AVCodecContext * const avctx= s->avctx; s->mb_y= 0; s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_H264; s->current_picture_ptr->pict_type= s->pict_type; if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU) ff_vdpau_h264_set_reference_frames(s); if(!s->dropable) { execute_ref_pic_marking(h, h->mmco, h->mmco_index); h->prev_poc_msb= h->poc_msb; h->prev_poc_lsb= h->poc_lsb; } h->prev_frame_num_offset= h->frame_num_offset; h->prev_frame_num= h->frame_num; if (avctx->hwaccel) { if (avctx->hwaccel->end_frame(avctx) < 0) av_log(avctx, AV_LOG_ERROR, "hardware accelerator failed to decode picture\n"); } if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU) ff_vdpau_h264_picture_complete(s); /* * FIXME: Error handling code does not seem to support interlaced * when slices span multiple rows * The ff_er_add_slice calls don't work right for bottom * fields; they cause massive erroneous error concealing * Error marking covers both fields (top and bottom). * This causes a mismatched s->error_count * and a bad error table. Further, the error count goes to * INT_MAX when called for bottom field, because mb_y is * past end by one (callers fault) and resync_mb_y != 0 * causes problems for the first MB line, too. */ if (!FIELD_PICTURE) ff_er_frame_end(s); MPV_frame_end(s); h->current_slice=0; } /** * Replicates H264 "master" context to thread contexts. */ static void clone_slice(H264Context *dst, H264Context *src) { memcpy(dst->block_offset, src->block_offset, sizeof(dst->block_offset)); dst->s.current_picture_ptr = src->s.current_picture_ptr; dst->s.current_picture = src->s.current_picture; dst->s.linesize = src->s.linesize; dst->s.uvlinesize = src->s.uvlinesize; dst->s.first_field = src->s.first_field; dst->prev_poc_msb = src->prev_poc_msb; dst->prev_poc_lsb = src->prev_poc_lsb; dst->prev_frame_num_offset = src->prev_frame_num_offset; dst->prev_frame_num = src->prev_frame_num; dst->short_ref_count = src->short_ref_count; memcpy(dst->short_ref, src->short_ref, sizeof(dst->short_ref)); memcpy(dst->long_ref, src->long_ref, sizeof(dst->long_ref)); memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list)); memcpy(dst->ref_list, src->ref_list, sizeof(dst->ref_list)); memcpy(dst->dequant4_coeff, src->dequant4_coeff, sizeof(src->dequant4_coeff)); memcpy(dst->dequant8_coeff, src->dequant8_coeff, sizeof(src->dequant8_coeff)); } /** * decodes a slice header. * This will also call MPV_common_init() and frame_start() as needed. * * @param h h264context * @param h0 h264 master context (differs from 'h' when doing sliced based parallel decoding) * * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded */ static int decode_slice_header(H264Context *h, H264Context *h0){ MpegEncContext * const s = &h->s; MpegEncContext * const s0 = &h0->s; unsigned int first_mb_in_slice; unsigned int pps_id; int num_ref_idx_active_override_flag; unsigned int slice_type, tmp, i, j; int default_ref_list_done = 0; int last_pic_structure; s->dropable= h->nal_ref_idc == 0; if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !h->nal_ref_idc){ s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab; s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab; }else{ s->me.qpel_put= s->dsp.put_h264_qpel_pixels_tab; s->me.qpel_avg= s->dsp.avg_h264_qpel_pixels_tab; } first_mb_in_slice= get_ue_golomb(&s->gb); if(first_mb_in_slice == 0){ //FIXME better field boundary detection if(h0->current_slice && FIELD_PICTURE){ field_end(h); } h0->current_slice = 0; if (!s0->first_field) s->current_picture_ptr= NULL; } slice_type= get_ue_golomb_31(&s->gb); if(slice_type > 9){ av_log(h->s.avctx, AV_LOG_ERROR, "slice type too large (%d) at %d %d\n", h->slice_type, s->mb_x, s->mb_y); return -1; } if(slice_type > 4){ slice_type -= 5; h->slice_type_fixed=1; }else h->slice_type_fixed=0; slice_type= golomb_to_pict_type[ slice_type ]; if (slice_type == FF_I_TYPE || (h0->current_slice != 0 && slice_type == h0->last_slice_type) ) { default_ref_list_done = 1; } h->slice_type= slice_type; h->slice_type_nos= slice_type & 3; s->pict_type= h->slice_type; // to make a few old functions happy, it's wrong though if (s->pict_type == FF_B_TYPE && s0->last_picture_ptr == NULL) { av_log(h->s.avctx, AV_LOG_ERROR, "B picture before any references, skipping\n"); return -1; } pps_id= get_ue_golomb(&s->gb); if(pps_id>=MAX_PPS_COUNT){ av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n"); return -1; } if(!h0->pps_buffers[pps_id]) { av_log(h->s.avctx, AV_LOG_ERROR, "non-existing PPS %u referenced\n", pps_id); return -1; } h->pps= *h0->pps_buffers[pps_id]; if(!h0->sps_buffers[h->pps.sps_id]) { av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS %u referenced\n", h->pps.sps_id); return -1; } h->sps = *h0->sps_buffers[h->pps.sps_id]; if(h == h0 && h->dequant_coeff_pps != pps_id){ h->dequant_coeff_pps = pps_id; init_dequant_tables(h); } s->mb_width= h->sps.mb_width; s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag); h->b_stride= s->mb_width*4; h->b8_stride= s->mb_width*2; s->width = 16*s->mb_width - 2*FFMIN(h->sps.crop_right, 7); if(h->sps.frame_mbs_only_flag) s->height= 16*s->mb_height - 2*FFMIN(h->sps.crop_bottom, 7); else s->height= 16*s->mb_height - 4*FFMIN(h->sps.crop_bottom, 3); if (s->context_initialized && ( s->width != s->avctx->width || s->height != s->avctx->height)) { if(h != h0) return -1; // width / height changed during parallelized decoding free_tables(h); flush_dpb(s->avctx); MPV_common_end(s); } if (!s->context_initialized) { if(h != h0) return -1; // we cant (re-)initialize context during parallel decoding avcodec_set_dimensions(s->avctx, s->width, s->height); s->avctx->sample_aspect_ratio= h->sps.sar; if(!s->avctx->sample_aspect_ratio.den) s->avctx->sample_aspect_ratio.den = 1; if(h->sps.video_signal_type_present_flag){ s->avctx->color_range = h->sps.full_range ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG; if(h->sps.colour_description_present_flag){ s->avctx->color_primaries = h->sps.color_primaries; s->avctx->color_trc = h->sps.color_trc; s->avctx->colorspace = h->sps.colorspace; } } if(h->sps.timing_info_present_flag){ s->avctx->time_base= (AVRational){h->sps.num_units_in_tick, h->sps.time_scale}; if(h->x264_build > 0 && h->x264_build < 44) s->avctx->time_base.den *= 2; av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den, s->avctx->time_base.num, s->avctx->time_base.den, 1<<30); } s->avctx->pix_fmt = s->avctx->get_format(s->avctx, s->avctx->codec->pix_fmts); s->avctx->hwaccel = ff_find_hwaccel(s->avctx->codec->id, s->avctx->pix_fmt); if (MPV_common_init(s) < 0) return -1; s->first_field = 0; h->prev_interlaced_frame = 1; init_scan_tables(h); ff_h264_alloc_tables(h); for(i = 1; i < s->avctx->thread_count; i++) { H264Context *c; c = h->thread_context[i] = av_malloc(sizeof(H264Context)); memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext)); memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext)); c->sps = h->sps; c->pps = h->pps; init_scan_tables(c); clone_tables(c, h); } for(i = 0; i < s->avctx->thread_count; i++) if(context_init(h->thread_context[i]) < 0) return -1; } h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num); h->mb_mbaff = 0; h->mb_aff_frame = 0; last_pic_structure = s0->picture_structure; if(h->sps.frame_mbs_only_flag){ s->picture_structure= PICT_FRAME; }else{ if(get_bits1(&s->gb)) { //field_pic_flag s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag } else { s->picture_structure= PICT_FRAME; h->mb_aff_frame = h->sps.mb_aff; } } h->mb_field_decoding_flag= s->picture_structure != PICT_FRAME; if(h0->current_slice == 0){ while(h->frame_num != h->prev_frame_num && h->frame_num != (h->prev_frame_num+1)%(1<sps.log2_max_frame_num)){ av_log(NULL, AV_LOG_DEBUG, "Frame num gap %d %d\n", h->frame_num, h->prev_frame_num); if (ff_h264_frame_start(h) < 0) return -1; h->prev_frame_num++; h->prev_frame_num %= 1<sps.log2_max_frame_num; s->current_picture_ptr->frame_num= h->prev_frame_num; execute_ref_pic_marking(h, NULL, 0); } /* See if we have a decoded first field looking for a pair... */ if (s0->first_field) { assert(s0->current_picture_ptr); assert(s0->current_picture_ptr->data[0]); assert(s0->current_picture_ptr->reference != DELAYED_PIC_REF); /* figure out if we have a complementary field pair */ if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) { /* * Previous field is unmatched. Don't display it, but let it * remain for reference if marked as such. */ s0->current_picture_ptr = NULL; s0->first_field = FIELD_PICTURE; } else { if (h->nal_ref_idc && s0->current_picture_ptr->reference && s0->current_picture_ptr->frame_num != h->frame_num) { /* * This and previous field were reference, but had * different frame_nums. Consider this field first in * pair. Throw away previous field except for reference * purposes. */ s0->first_field = 1; s0->current_picture_ptr = NULL; } else { /* Second field in complementary pair */ s0->first_field = 0; } } } else { /* Frame or first field in a potentially complementary pair */ assert(!s0->current_picture_ptr); s0->first_field = FIELD_PICTURE; } if((!FIELD_PICTURE || s0->first_field) && ff_h264_frame_start(h) < 0) { s0->first_field = 0; return -1; } } if(h != h0) clone_slice(h, h0); s->current_picture_ptr->frame_num= h->frame_num; //FIXME frame_num cleanup assert(s->mb_num == s->mb_width * s->mb_height); if(first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num || first_mb_in_slice >= s->mb_num){ av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n"); return -1; } s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width; s->resync_mb_y = s->mb_y = (first_mb_in_slice / s->mb_width) << FIELD_OR_MBAFF_PICTURE; if (s->picture_structure == PICT_BOTTOM_FIELD) s->resync_mb_y = s->mb_y = s->mb_y + 1; assert(s->mb_y < s->mb_height); if(s->picture_structure==PICT_FRAME){ h->curr_pic_num= h->frame_num; h->max_pic_num= 1<< h->sps.log2_max_frame_num; }else{ h->curr_pic_num= 2*h->frame_num + 1; h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1); } if(h->nal_unit_type == NAL_IDR_SLICE){ get_ue_golomb(&s->gb); /* idr_pic_id */ } if(h->sps.poc_type==0){ h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb); if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){ h->delta_poc_bottom= get_se_golomb(&s->gb); } } if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){ h->delta_poc[0]= get_se_golomb(&s->gb); if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME) h->delta_poc[1]= get_se_golomb(&s->gb); } init_poc(h); if(h->pps.redundant_pic_cnt_present){ h->redundant_pic_count= get_ue_golomb(&s->gb); } //set defaults, might be overridden a few lines later h->ref_count[0]= h->pps.ref_count[0]; h->ref_count[1]= h->pps.ref_count[1]; if(h->slice_type_nos != FF_I_TYPE){ if(h->slice_type_nos == FF_B_TYPE){ h->direct_spatial_mv_pred= get_bits1(&s->gb); } num_ref_idx_active_override_flag= get_bits1(&s->gb); if(num_ref_idx_active_override_flag){ h->ref_count[0]= get_ue_golomb(&s->gb) + 1; if(h->slice_type_nos==FF_B_TYPE) h->ref_count[1]= get_ue_golomb(&s->gb) + 1; if(h->ref_count[0]-1 > 32-1 || h->ref_count[1]-1 > 32-1){ av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n"); h->ref_count[0]= h->ref_count[1]= 1; return -1; } } if(h->slice_type_nos == FF_B_TYPE) h->list_count= 2; else h->list_count= 1; }else h->list_count= 0; if(!default_ref_list_done){ fill_default_ref_list(h); } if(h->slice_type_nos!=FF_I_TYPE && decode_ref_pic_list_reordering(h) < 0) return -1; if(h->slice_type_nos!=FF_I_TYPE){ s->last_picture_ptr= &h->ref_list[0][0]; ff_copy_picture(&s->last_picture, s->last_picture_ptr); } if(h->slice_type_nos==FF_B_TYPE){ s->next_picture_ptr= &h->ref_list[1][0]; ff_copy_picture(&s->next_picture, s->next_picture_ptr); } if( (h->pps.weighted_pred && h->slice_type_nos == FF_P_TYPE ) || (h->pps.weighted_bipred_idc==1 && h->slice_type_nos== FF_B_TYPE ) ) pred_weight_table(h); else if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE) implicit_weight_table(h); else { h->use_weight = 0; for (i = 0; i < 2; i++) { h->luma_weight_flag[i] = 0; h->chroma_weight_flag[i] = 0; } } if(h->nal_ref_idc) decode_ref_pic_marking(h0, &s->gb); if(FRAME_MBAFF) fill_mbaff_ref_list(h); if(h->slice_type_nos==FF_B_TYPE && !h->direct_spatial_mv_pred) ff_h264_direct_dist_scale_factor(h); ff_h264_direct_ref_list_init(h); if( h->slice_type_nos != FF_I_TYPE && h->pps.cabac ){ tmp = get_ue_golomb_31(&s->gb); if(tmp > 2){ av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n"); return -1; } h->cabac_init_idc= tmp; } h->last_qscale_diff = 0; tmp = h->pps.init_qp + get_se_golomb(&s->gb); if(tmp>51){ av_log(s->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp); return -1; } s->qscale= tmp; h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale); h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale); //FIXME qscale / qp ... stuff if(h->slice_type == FF_SP_TYPE){ get_bits1(&s->gb); /* sp_for_switch_flag */ } if(h->slice_type==FF_SP_TYPE || h->slice_type == FF_SI_TYPE){ get_se_golomb(&s->gb); /* slice_qs_delta */ } h->deblocking_filter = 1; h->slice_alpha_c0_offset = 0; h->slice_beta_offset = 0; if( h->pps.deblocking_filter_parameters_present ) { tmp= get_ue_golomb_31(&s->gb); if(tmp > 2){ av_log(s->avctx, AV_LOG_ERROR, "deblocking_filter_idc %u out of range\n", tmp); return -1; } h->deblocking_filter= tmp; if(h->deblocking_filter < 2) h->deblocking_filter^= 1; // 1<->0 if( h->deblocking_filter ) { h->slice_alpha_c0_offset = get_se_golomb(&s->gb) << 1; h->slice_beta_offset = get_se_golomb(&s->gb) << 1; } } if( s->avctx->skip_loop_filter >= AVDISCARD_ALL ||(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY && h->slice_type_nos != FF_I_TYPE) ||(s->avctx->skip_loop_filter >= AVDISCARD_BIDIR && h->slice_type_nos == FF_B_TYPE) ||(s->avctx->skip_loop_filter >= AVDISCARD_NONREF && h->nal_ref_idc == 0)) h->deblocking_filter= 0; if(h->deblocking_filter == 1 && h0->max_contexts > 1) { if(s->avctx->flags2 & CODEC_FLAG2_FAST) { /* Cheat slightly for speed: Do not bother to deblock across slices. */ h->deblocking_filter = 2; } else { h0->max_contexts = 1; if(!h0->single_decode_warning) { av_log(s->avctx, AV_LOG_INFO, "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n"); h0->single_decode_warning = 1; } if(h != h0) return 1; // deblocking switched inside frame } } #if 0 //FMO if( h->pps.num_slice_groups > 1 && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5) slice_group_change_cycle= get_bits(&s->gb, ?); #endif h0->last_slice_type = slice_type; h->slice_num = ++h0->current_slice; if(h->slice_num >= MAX_SLICES){ av_log(s->avctx, AV_LOG_ERROR, "Too many slices, increase MAX_SLICES and recompile\n"); } for(j=0; j<2; j++){ int *ref2frm= h->ref2frm[h->slice_num&(MAX_SLICES-1)][j]; ref2frm[0]= ref2frm[1]= -1; for(i=0; i<16; i++) ref2frm[i+2]= 4*h->ref_list[j][i].frame_num +(h->ref_list[j][i].reference&3); ref2frm[18+0]= ref2frm[18+1]= -1; for(i=16; i<48; i++) ref2frm[i+4]= 4*h->ref_list[j][i].frame_num +(h->ref_list[j][i].reference&3); } h->emu_edge_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16; h->emu_edge_height= (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width; s->avctx->refs= h->sps.ref_frame_count; if(s->avctx->debug&FF_DEBUG_PICT_INFO){ av_log(h->s.avctx, AV_LOG_DEBUG, "slice:%d %s mb:%d %c%s%s pps:%u frame:%d poc:%d/%d ref:%d/%d qp:%d loop:%d:%d:%d weight:%d%s %s\n", h->slice_num, (s->picture_structure==PICT_FRAME ? "F" : s->picture_structure==PICT_TOP_FIELD ? "T" : "B"), first_mb_in_slice, av_get_pict_type_char(h->slice_type), h->slice_type_fixed ? " fix" : "", h->nal_unit_type == NAL_IDR_SLICE ? " IDR" : "", pps_id, h->frame_num, s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1], h->ref_count[0], h->ref_count[1], s->qscale, h->deblocking_filter, h->slice_alpha_c0_offset/2, h->slice_beta_offset/2, h->use_weight, h->use_weight==1 && h->use_weight_chroma ? "c" : "", h->slice_type == FF_B_TYPE ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : "" ); } return 0; } int ff_h264_get_slice_type(H264Context *h) { switch (h->slice_type) { case FF_P_TYPE: return 0; case FF_B_TYPE: return 1; case FF_I_TYPE: return 2; case FF_SP_TYPE: return 3; case FF_SI_TYPE: return 4; default: return -1; } } /** * */ 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; } static inline int get_dct8x8_allowed(H264Context *h){ if(h->sps.direct_8x8_inference_flag) return !(*(uint64_t*)h->sub_mb_type & ((MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8 )*0x0001000100010001ULL)); else return !(*(uint64_t*)h->sub_mb_type & ((MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8|MB_TYPE_DIRECT2)*0x0001000100010001ULL)); } /** * decodes a residual block. * @param n block index * @param scantable scantable * @param max_coeff number of coefficients in the block * @return <0 if an error occurred */ static int decode_residual(H264Context *h, GetBitContext *gb, DCTELEM *block, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff){ MpegEncContext * const s = &h->s; static const int coeff_token_table_index[17]= {0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3}; int level[16]; int zeros_left, coeff_num, coeff_token, total_coeff, i, j, trailing_ones, run_before; //FIXME put trailing_onex into the context if(n == CHROMA_DC_BLOCK_INDEX){ coeff_token= get_vlc2(gb, chroma_dc_coeff_token_vlc.table, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 1); total_coeff= coeff_token>>2; }else{ if(n == LUMA_DC_BLOCK_INDEX){ total_coeff= pred_non_zero_count(h, 0); coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2); total_coeff= coeff_token>>2; }else{ total_coeff= pred_non_zero_count(h, n); coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2); total_coeff= coeff_token>>2; h->non_zero_count_cache[ scan8[n] ]= total_coeff; } } //FIXME set last_non_zero? if(total_coeff==0) return 0; if(total_coeff > (unsigned)max_coeff) { av_log(h->s.avctx, AV_LOG_ERROR, "corrupted macroblock %d %d (total_coeff=%d)\n", s->mb_x, s->mb_y, total_coeff); return -1; } trailing_ones= coeff_token&3; tprintf(h->s.avctx, "trailing:%d, total:%d\n", trailing_ones, total_coeff); assert(total_coeff<=16); i = show_bits(gb, 3); skip_bits(gb, trailing_ones); level[0] = 1-((i&4)>>1); level[1] = 1-((i&2) ); level[2] = 1-((i&1)<<1); if(trailing_ones 10 && trailing_ones < 3; int bitsi= show_bits(gb, LEVEL_TAB_BITS); int level_code= cavlc_level_tab[suffix_length][bitsi][0]; skip_bits(gb, cavlc_level_tab[suffix_length][bitsi][1]); if(level_code >= 100){ prefix= level_code - 100; if(prefix == LEVEL_TAB_BITS) prefix += get_level_prefix(gb); //first coefficient has suffix_length equal to 0 or 1 if(prefix<14){ //FIXME try to build a large unified VLC table for all this if(suffix_length) level_code= (prefix<<1) + get_bits1(gb); //part else level_code= prefix; //part }else if(prefix==14){ if(suffix_length) level_code= (prefix<<1) + get_bits1(gb); //part else level_code= prefix + get_bits(gb, 4); //part }else{ level_code= 30 + get_bits(gb, prefix-3); //part if(prefix>=16) level_code += (1<<(prefix-3))-4096; } if(trailing_ones < 3) level_code += 2; suffix_length = 2; mask= -(level_code&1); level[trailing_ones]= (((2+level_code)>>1) ^ mask) - mask; }else{ if(trailing_ones < 3) level_code += (level_code>>31)|1; suffix_length = 1; if(level_code + 3U > 6U) suffix_length++; level[trailing_ones]= level_code; } //remaining coefficients have suffix_length > 0 for(i=trailing_ones+1;i= 100){ prefix= level_code - 100; if(prefix == LEVEL_TAB_BITS){ prefix += get_level_prefix(gb); } if(prefix<15){ level_code = (prefix<=16) level_code += (1<<(prefix-3))-4096; } mask= -(level_code&1); level_code= (((2+level_code)>>1) ^ mask) - mask; } level[i]= level_code; if(suffix_limit[suffix_length] + level_code > 2U*suffix_limit[suffix_length]) suffix_length++; } } if(total_coeff == max_coeff) zeros_left=0; else{ if(n == CHROMA_DC_BLOCK_INDEX) zeros_left= get_vlc2(gb, chroma_dc_total_zeros_vlc[ total_coeff-1 ].table, CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 1); else zeros_left= get_vlc2(gb, total_zeros_vlc[ total_coeff-1 ].table, TOTAL_ZEROS_VLC_BITS, 1); } coeff_num = zeros_left + total_coeff - 1; j = scantable[coeff_num]; if(n > 24){ block[j] = level[0]; for(i=1;i>6; for(i=1;i>6; } } if(zeros_left<0){ av_log(h->s.avctx, AV_LOG_ERROR, "negative number of zero coeffs at %d %d\n", s->mb_x, s->mb_y); return -1; } return 0; } static void predict_field_decoding_flag(H264Context *h){ MpegEncContext * const s = &h->s; const int mb_xy= h->mb_xy; int mb_type = (h->slice_table[mb_xy-1] == h->slice_num) ? s->current_picture.mb_type[mb_xy-1] : (h->slice_table[mb_xy-s->mb_stride] == h->slice_num) ? s->current_picture.mb_type[mb_xy-s->mb_stride] : 0; h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0; } /** * decodes a P_SKIP or B_SKIP macroblock */ static void decode_mb_skip(H264Context *h){ MpegEncContext * const s = &h->s; const int mb_xy= h->mb_xy; int mb_type=0; memset(h->non_zero_count[mb_xy], 0, 16); memset(h->non_zero_count_cache + 8, 0, 8*5); //FIXME ugly, remove pfui if(MB_FIELD) mb_type|= MB_TYPE_INTERLACED; if( h->slice_type_nos == FF_B_TYPE ) { // just for fill_caches. pred_direct_motion will set the real mb_type mb_type|= MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2|MB_TYPE_SKIP; fill_caches(h, mb_type, 0); //FIXME check what is needed and what not ... ff_h264_pred_direct_motion(h, &mb_type); mb_type|= MB_TYPE_SKIP; } else { int mx, my; mb_type|= MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P1L0|MB_TYPE_SKIP; fill_caches(h, mb_type, 0); //FIXME check what is needed and what not ... pred_pskip_motion(h, &mx, &my); fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, 0, 1); fill_rectangle( h->mv_cache[0][scan8[0]], 4, 4, 8, pack16to32(mx,my), 4); } write_back_motion(h, mb_type); s->current_picture.mb_type[mb_xy]= mb_type; s->current_picture.qscale_table[mb_xy]= s->qscale; h->slice_table[ mb_xy ]= h->slice_num; h->prev_mb_skipped= 1; } /** * decodes a macroblock * @returns 0 if OK, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed */ static int decode_mb_cavlc(H264Context *h){ MpegEncContext * const s = &h->s; int mb_xy; int partition_count; unsigned int mb_type, cbp; int dct8x8_allowed= h->pps.transform_8x8_mode; mb_xy = h->mb_xy = s->mb_x + s->mb_y*s->mb_stride; tprintf(s->avctx, "pic:%d mb:%d/%d\n", h->frame_num, s->mb_x, s->mb_y); cbp = 0; /* avoid warning. FIXME: find a solution without slowing down the code */ if(h->slice_type_nos != FF_I_TYPE){ if(s->mb_skip_run==-1) s->mb_skip_run= get_ue_golomb(&s->gb); if (s->mb_skip_run--) { if(FRAME_MBAFF && (s->mb_y&1) == 0){ if(s->mb_skip_run==0) h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&s->gb); else predict_field_decoding_flag(h); } decode_mb_skip(h); return 0; } } if(FRAME_MBAFF){ if( (s->mb_y&1) == 0 ) h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&s->gb); } h->prev_mb_skipped= 0; mb_type= get_ue_golomb(&s->gb); if(h->slice_type_nos == FF_B_TYPE){ 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 == FF_P_TYPE){ if(mb_type < 5){ partition_count= p_mb_type_info[mb_type].partition_count; mb_type= p_mb_type_info[mb_type].type; }else{ mb_type -= 5; goto decode_intra_mb; } }else{ assert(h->slice_type_nos == FF_I_TYPE); if(h->slice_type == FF_SI_TYPE && mb_type) mb_type--; decode_intra_mb: if(mb_type > 25){ av_log(h->s.avctx, AV_LOG_ERROR, "mb_type %d in %c slice too large at %d %d\n", mb_type, av_get_pict_type_char(h->slice_type), s->mb_x, s->mb_y); return -1; } partition_count=0; cbp= i_mb_type_info[mb_type].cbp; h->intra16x16_pred_mode= i_mb_type_info[mb_type].pred_mode; mb_type= i_mb_type_info[mb_type].type; } if(MB_FIELD) mb_type |= MB_TYPE_INTERLACED; h->slice_table[ mb_xy ]= h->slice_num; if(IS_INTRA_PCM(mb_type)){ unsigned int x; // We assume these blocks are very rare so we do not optimize it. align_get_bits(&s->gb); // The pixels are stored in the same order as levels in h->mb array. for(x=0; x < (CHROMA ? 384 : 256); x++){ ((uint8_t*)h->mb)[x]= get_bits(&s->gb, 8); } // In deblocking, the quantizer is 0 s->current_picture.qscale_table[mb_xy]= 0; // All coeffs are present memset(h->non_zero_count[mb_xy], 16, 16); s->current_picture.mb_type[mb_xy]= mb_type; return 0; } if(MB_MBAFF){ h->ref_count[0] <<= 1; h->ref_count[1] <<= 1; } fill_caches(h, mb_type, 0); //mb_pred if(IS_INTRA(mb_type)){ int pred_mode; // init_top_left_availability(h); if(IS_INTRA4x4(mb_type)){ int i; int di = 1; if(dct8x8_allowed && get_bits1(&s->gb)){ mb_type |= MB_TYPE_8x8DCT; di = 4; } // fill_intra4x4_pred_table(h); for(i=0; i<16; i+=di){ int mode= pred_intra_mode(h, i); if(!get_bits1(&s->gb)){ const int rem_mode= get_bits(&s->gb, 3); mode = rem_mode + (rem_mode >= mode); } if(di==4) fill_rectangle( &h->intra4x4_pred_mode_cache[ scan8[i] ], 2, 2, 8, mode, 1 ); else h->intra4x4_pred_mode_cache[ scan8[i] ] = mode; } ff_h264_write_back_intra_pred_mode(h); if( check_intra4x4_pred_mode(h) < 0) return -1; }else{ h->intra16x16_pred_mode= ff_h264_check_intra_pred_mode(h, h->intra16x16_pred_mode); if(h->intra16x16_pred_mode < 0) return -1; } if(CHROMA){ pred_mode= ff_h264_check_intra_pred_mode(h, get_ue_golomb_31(&s->gb)); if(pred_mode < 0) return -1; h->chroma_pred_mode= pred_mode; } }else if(partition_count==4){ int i, j, sub_partition_count[4], list, ref[2][4]; if(h->slice_type_nos == FF_B_TYPE){ for(i=0; i<4; i++){ h->sub_mb_type[i]= get_ue_golomb_31(&s->gb); if(h->sub_mb_type[i] >=13){ av_log(h->s.avctx, AV_LOG_ERROR, "B sub_mb_type %u out of range at %d %d\n", h->sub_mb_type[i], s->mb_x, s->mb_y); return -1; } sub_partition_count[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count; h->sub_mb_type[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].type; } if( IS_DIRECT(h->sub_mb_type[0]) || IS_DIRECT(h->sub_mb_type[1]) || IS_DIRECT(h->sub_mb_type[2]) || IS_DIRECT(h->sub_mb_type[3])) { ff_h264_pred_direct_motion(h, &mb_type); h->ref_cache[0][scan8[4]] = h->ref_cache[1][scan8[4]] = h->ref_cache[0][scan8[12]] = h->ref_cache[1][scan8[12]] = PART_NOT_AVAILABLE; } }else{ assert(h->slice_type_nos == FF_P_TYPE); //FIXME SP correct ? for(i=0; i<4; i++){ h->sub_mb_type[i]= get_ue_golomb_31(&s->gb); if(h->sub_mb_type[i] >=4){ av_log(h->s.avctx, AV_LOG_ERROR, "P sub_mb_type %u out of range at %d %d\n", h->sub_mb_type[i], s->mb_x, s->mb_y); return -1; } sub_partition_count[i]= p_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count; h->sub_mb_type[i]= p_sub_mb_type_info[ h->sub_mb_type[i] ].type; } } for(list=0; listlist_count; list++){ int ref_count= IS_REF0(mb_type) ? 1 : h->ref_count[list]; for(i=0; i<4; i++){ if(IS_DIRECT(h->sub_mb_type[i])) continue; if(IS_DIR(h->sub_mb_type[i], 0, list)){ unsigned int tmp; if(ref_count == 1){ tmp= 0; }else if(ref_count == 2){ tmp= get_bits1(&s->gb)^1; }else{ tmp= get_ue_golomb_31(&s->gb); if(tmp>=ref_count){ av_log(h->s.avctx, AV_LOG_ERROR, "ref %u overflow\n", tmp); return -1; } } ref[list][i]= tmp; }else{ //FIXME ref[list][i] = -1; } } } if(dct8x8_allowed) dct8x8_allowed = get_dct8x8_allowed(h); for(list=0; listlist_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; jmv_cache[list][ scan8[index] ]; pred_motion(h, index, block_width, list, h->ref_cache[list][ scan8[index] ], &mx, &my); mx += get_se_golomb(&s->gb); my += get_se_golomb(&s->gb); tprintf(s->avctx, "final mv:%d %d\n", mx, my); if(IS_SUB_8X8(sub_mb_type)){ mv_cache[ 1 ][0]= mv_cache[ 8 ][0]= mv_cache[ 9 ][0]= mx; mv_cache[ 1 ][1]= mv_cache[ 8 ][1]= mv_cache[ 9 ][1]= my; }else if(IS_SUB_8X4(sub_mb_type)){ mv_cache[ 1 ][0]= mx; mv_cache[ 1 ][1]= my; }else if(IS_SUB_4X8(sub_mb_type)){ mv_cache[ 8 ][0]= mx; mv_cache[ 8 ][1]= my; } mv_cache[ 0 ][0]= mx; mv_cache[ 0 ][1]= my; } }else{ uint32_t *p= (uint32_t *)&h->mv_cache[list][ scan8[4*i] ][0]; p[0] = p[1]= p[8] = p[9]= 0; } } } }else if(IS_DIRECT(mb_type)){ ff_h264_pred_direct_motion(h, &mb_type); dct8x8_allowed &= h->sps.direct_8x8_inference_flag; }else{ int list, mx, my, i; //FIXME we should set ref_idx_l? to 0 if we use that later ... if(IS_16X16(mb_type)){ for(list=0; listlist_count; list++){ unsigned int val; if(IS_DIR(mb_type, 0, list)){ if(h->ref_count[list]==1){ val= 0; }else if(h->ref_count[list]==2){ val= get_bits1(&s->gb)^1; }else{ val= get_ue_golomb_31(&s->gb); if(val >= h->ref_count[list]){ av_log(h->s.avctx, AV_LOG_ERROR, "ref %u overflow\n", val); return -1; } } }else val= LIST_NOT_USED&0xFF; fill_rectangle(&h->ref_cache[list][ scan8[0] ], 4, 4, 8, val, 1); } for(list=0; listlist_count; list++){ unsigned int val; if(IS_DIR(mb_type, 0, list)){ pred_motion(h, 0, 4, list, h->ref_cache[list][ scan8[0] ], &mx, &my); mx += get_se_golomb(&s->gb); my += get_se_golomb(&s->gb); tprintf(s->avctx, "final mv:%d %d\n", mx, my); val= pack16to32(mx,my); }else val=0; fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, val, 4); } } else if(IS_16X8(mb_type)){ for(list=0; listlist_count; list++){ for(i=0; i<2; i++){ unsigned int val; if(IS_DIR(mb_type, i, list)){ if(h->ref_count[list] == 1){ val= 0; }else if(h->ref_count[list] == 2){ val= get_bits1(&s->gb)^1; }else{ val= get_ue_golomb_31(&s->gb); if(val >= h->ref_count[list]){ av_log(h->s.avctx, AV_LOG_ERROR, "ref %u overflow\n", val); return -1; } } }else val= LIST_NOT_USED&0xFF; fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, val, 1); } } for(list=0; listlist_count; list++){ for(i=0; i<2; i++){ unsigned int val; if(IS_DIR(mb_type, i, list)){ pred_16x8_motion(h, 8*i, list, h->ref_cache[list][scan8[0] + 16*i], &mx, &my); mx += get_se_golomb(&s->gb); my += get_se_golomb(&s->gb); tprintf(s->avctx, "final mv:%d %d\n", mx, my); val= pack16to32(mx,my); }else val=0; fill_rectangle(h->mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, val, 4); } } }else{ assert(IS_8X16(mb_type)); for(list=0; listlist_count; list++){ for(i=0; i<2; i++){ unsigned int val; if(IS_DIR(mb_type, i, list)){ //FIXME optimize if(h->ref_count[list]==1){ val= 0; }else if(h->ref_count[list]==2){ val= get_bits1(&s->gb)^1; }else{ val= get_ue_golomb_31(&s->gb); if(val >= h->ref_count[list]){ av_log(h->s.avctx, AV_LOG_ERROR, "ref %u overflow\n", val); return -1; } } }else val= LIST_NOT_USED&0xFF; fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, val, 1); } } for(list=0; listlist_count; list++){ for(i=0; i<2; i++){ unsigned int val; if(IS_DIR(mb_type, i, list)){ pred_8x16_motion(h, i*4, list, h->ref_cache[list][ scan8[0] + 2*i ], &mx, &my); mx += get_se_golomb(&s->gb); my += get_se_golomb(&s->gb); tprintf(s->avctx, "final mv:%d %d\n", mx, my); val= pack16to32(mx,my); }else val=0; fill_rectangle(h->mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, val, 4); } } } } if(IS_INTER(mb_type)) write_back_motion(h, mb_type); if(!IS_INTRA16x16(mb_type)){ cbp= get_ue_golomb(&s->gb); if(cbp > 47){ av_log(h->s.avctx, AV_LOG_ERROR, "cbp too large (%u) at %d %d\n", cbp, s->mb_x, s->mb_y); return -1; } if(CHROMA){ if(IS_INTRA4x4(mb_type)) cbp= golomb_to_intra4x4_cbp[cbp]; else cbp= golomb_to_inter_cbp [cbp]; }else{ if(IS_INTRA4x4(mb_type)) cbp= golomb_to_intra4x4_cbp_gray[cbp]; else cbp= golomb_to_inter_cbp_gray[cbp]; } } h->cbp = cbp; if(dct8x8_allowed && (cbp&15) && !IS_INTRA(mb_type)){ if(get_bits1(&s->gb)){ mb_type |= MB_TYPE_8x8DCT; h->cbp_table[mb_xy]= cbp; } } s->current_picture.mb_type[mb_xy]= mb_type; if(cbp || IS_INTRA16x16(mb_type)){ int i8x8, i4x4, chroma_idx; int dquant; GetBitContext *gb= IS_INTRA(mb_type) ? h->intra_gb_ptr : h->inter_gb_ptr; const uint8_t *scan, *scan8x8, *dc_scan; // fill_non_zero_count_cache(h); if(IS_INTERLACED(mb_type)){ scan8x8= s->qscale ? h->field_scan8x8_cavlc : h->field_scan8x8_cavlc_q0; scan= s->qscale ? h->field_scan : h->field_scan_q0; dc_scan= luma_dc_field_scan; }else{ scan8x8= s->qscale ? h->zigzag_scan8x8_cavlc : h->zigzag_scan8x8_cavlc_q0; scan= s->qscale ? h->zigzag_scan : h->zigzag_scan_q0; dc_scan= luma_dc_zigzag_scan; } dquant= get_se_golomb(&s->gb); if( dquant > 25 || dquant < -26 ){ av_log(h->s.avctx, AV_LOG_ERROR, "dquant out of range (%d) at %d %d\n", dquant, s->mb_x, s->mb_y); return -1; } s->qscale += dquant; if(((unsigned)s->qscale) > 51){ if(s->qscale<0) s->qscale+= 52; else s->qscale-= 52; } h->chroma_qp[0]= get_chroma_qp(h, 0, s->qscale); h->chroma_qp[1]= get_chroma_qp(h, 1, s->qscale); if(IS_INTRA16x16(mb_type)){ if( decode_residual(h, h->intra_gb_ptr, h->mb, LUMA_DC_BLOCK_INDEX, dc_scan, h->dequant4_coeff[0][s->qscale], 16) < 0){ return -1; //FIXME continue if partitioned and other return -1 too } assert((cbp&15) == 0 || (cbp&15) == 15); if(cbp&15){ for(i8x8=0; i8x8<4; i8x8++){ for(i4x4=0; i4x4<4; i4x4++){ const int index= i4x4 + 4*i8x8; if( decode_residual(h, h->intra_gb_ptr, h->mb + 16*index, index, scan + 1, h->dequant4_coeff[0][s->qscale], 15) < 0 ){ return -1; } } } }else{ fill_rectangle(&h->non_zero_count_cache[scan8[0]], 4, 4, 8, 0, 1); } }else{ for(i8x8=0; i8x8<4; i8x8++){ if(cbp & (1<mb[64*i8x8]; uint8_t *nnz; for(i4x4=0; i4x4<4; i4x4++){ if( decode_residual(h, gb, buf, i4x4+4*i8x8, scan8x8+16*i4x4, h->dequant8_coeff[IS_INTRA( mb_type ) ? 0:1][s->qscale], 16) <0 ) return -1; } nnz= &h->non_zero_count_cache[ scan8[4*i8x8] ]; nnz[0] += nnz[1] + nnz[8] + nnz[9]; }else{ for(i4x4=0; i4x4<4; i4x4++){ const int index= i4x4 + 4*i8x8; if( decode_residual(h, gb, h->mb + 16*index, index, scan, h->dequant4_coeff[IS_INTRA( mb_type ) ? 0:3][s->qscale], 16) <0 ){ return -1; } } } }else{ uint8_t * const nnz= &h->non_zero_count_cache[ scan8[4*i8x8] ]; nnz[0] = nnz[1] = nnz[8] = nnz[9] = 0; } } } if(cbp&0x30){ for(chroma_idx=0; chroma_idx<2; chroma_idx++) if( decode_residual(h, gb, h->mb + 256 + 16*4*chroma_idx, CHROMA_DC_BLOCK_INDEX, chroma_dc_scan, NULL, 4) < 0){ return -1; } } if(cbp&0x20){ for(chroma_idx=0; chroma_idx<2; chroma_idx++){ const uint32_t *qmul = h->dequant4_coeff[chroma_idx+1+(IS_INTRA( mb_type ) ? 0:3)][h->chroma_qp[chroma_idx]]; for(i4x4=0; i4x4<4; i4x4++){ const int index= 16 + 4*chroma_idx + i4x4; if( decode_residual(h, gb, h->mb + 16*index, index, scan + 1, qmul, 15) < 0){ return -1; } } } }else{ uint8_t * const nnz= &h->non_zero_count_cache[0]; nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] = nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0; } }else{ uint8_t * const nnz= &h->non_zero_count_cache[0]; fill_rectangle(&nnz[scan8[0]], 4, 4, 8, 0, 1); nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] = nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0; } s->current_picture.qscale_table[mb_xy]= s->qscale; write_back_non_zero_count(h); if(MB_MBAFF){ h->ref_count[0] >>= 1; h->ref_count[1] >>= 1; } return 0; } static int decode_cabac_field_decoding_flag(H264Context *h) { MpegEncContext * const s = &h->s; const int mb_x = s->mb_x; const int mb_y = s->mb_y & ~1; const int mba_xy = mb_x - 1 + mb_y *s->mb_stride; const int mbb_xy = mb_x + (mb_y-2)*s->mb_stride; unsigned int ctx = 0; if( h->slice_table[mba_xy] == h->slice_num && IS_INTERLACED( s->current_picture.mb_type[mba_xy] ) ) { ctx += 1; } if( h->slice_table[mbb_xy] == h->slice_num && IS_INTERLACED( s->current_picture.mb_type[mbb_xy] ) ) { ctx += 1; } return get_cabac_noinline( &h->cabac, &h->cabac_state[70 + ctx] ); } static int decode_cabac_intra_mb_type(H264Context *h, int ctx_base, int intra_slice) { uint8_t *state= &h->cabac_state[ctx_base]; int mb_type; if(intra_slice){ MpegEncContext * const s = &h->s; const int mba_xy = h->left_mb_xy[0]; const int mbb_xy = h->top_mb_xy; int ctx=0; if( h->slice_table[mba_xy] == h->slice_num && !IS_INTRA4x4( s->current_picture.mb_type[mba_xy] ) ) ctx++; if( h->slice_table[mbb_xy] == h->slice_num && !IS_INTRA4x4( s->current_picture.mb_type[mbb_xy] ) ) ctx++; if( get_cabac_noinline( &h->cabac, &state[ctx] ) == 0 ) return 0; /* I4x4 */ state += 2; }else{ if( get_cabac_noinline( &h->cabac, &state[0] ) == 0 ) return 0; /* I4x4 */ } if( get_cabac_terminate( &h->cabac ) ) return 25; /* PCM */ mb_type = 1; /* I16x16 */ mb_type += 12 * get_cabac_noinline( &h->cabac, &state[1] ); /* cbp_luma != 0 */ if( get_cabac_noinline( &h->cabac, &state[2] ) ) /* cbp_chroma */ mb_type += 4 + 4 * get_cabac_noinline( &h->cabac, &state[2+intra_slice] ); mb_type += 2 * get_cabac_noinline( &h->cabac, &state[3+intra_slice] ); mb_type += 1 * get_cabac_noinline( &h->cabac, &state[3+2*intra_slice] ); return mb_type; } static int decode_cabac_mb_type_b( H264Context *h ) { MpegEncContext * const s = &h->s; const int mba_xy = h->left_mb_xy[0]; const int mbb_xy = h->top_mb_xy; int ctx = 0; int bits; assert(h->slice_type_nos == FF_B_TYPE); if( h->slice_table[mba_xy] == h->slice_num && !IS_DIRECT( s->current_picture.mb_type[mba_xy] ) ) ctx++; if( h->slice_table[mbb_xy] == h->slice_num && !IS_DIRECT( s->current_picture.mb_type[mbb_xy] ) ) ctx++; if( !get_cabac_noinline( &h->cabac, &h->cabac_state[27+ctx] ) ) return 0; /* B_Direct_16x16 */ if( !get_cabac_noinline( &h->cabac, &h->cabac_state[27+3] ) ) { return 1 + get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] ); /* B_L[01]_16x16 */ } bits = get_cabac_noinline( &h->cabac, &h->cabac_state[27+4] ) << 3; bits|= get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] ) << 2; bits|= get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] ) << 1; bits|= get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] ); if( bits < 8 ) return bits + 3; /* B_Bi_16x16 through B_L1_L0_16x8 */ else if( bits == 13 ) { return decode_cabac_intra_mb_type(h, 32, 0) + 23; } else if( bits == 14 ) return 11; /* B_L1_L0_8x16 */ else if( bits == 15 ) return 22; /* B_8x8 */ bits= ( bits<<1 ) | get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] ); return bits - 4; /* B_L0_Bi_* through B_Bi_Bi_* */ } static int decode_cabac_mb_skip( H264Context *h, int mb_x, int mb_y ) { MpegEncContext * const s = &h->s; int mba_xy, mbb_xy; int ctx = 0; if(FRAME_MBAFF){ //FIXME merge with the stuff in fill_caches? int mb_xy = mb_x + (mb_y&~1)*s->mb_stride; mba_xy = mb_xy - 1; if( (mb_y&1) && h->slice_table[mba_xy] == h->slice_num && MB_FIELD == !!IS_INTERLACED( s->current_picture.mb_type[mba_xy] ) ) mba_xy += s->mb_stride; if( MB_FIELD ){ mbb_xy = mb_xy - s->mb_stride; if( !(mb_y&1) && h->slice_table[mbb_xy] == h->slice_num && IS_INTERLACED( s->current_picture.mb_type[mbb_xy] ) ) mbb_xy -= s->mb_stride; }else mbb_xy = mb_x + (mb_y-1)*s->mb_stride; }else{ int mb_xy = h->mb_xy; mba_xy = mb_xy - 1; mbb_xy = mb_xy - (s->mb_stride << FIELD_PICTURE); } if( h->slice_table[mba_xy] == h->slice_num && !IS_SKIP( s->current_picture.mb_type[mba_xy] )) ctx++; if( h->slice_table[mbb_xy] == h->slice_num && !IS_SKIP( s->current_picture.mb_type[mbb_xy] )) ctx++; if( h->slice_type_nos == FF_B_TYPE ) ctx += 13; return get_cabac_noinline( &h->cabac, &h->cabac_state[11+ctx] ); } static int decode_cabac_mb_intra4x4_pred_mode( H264Context *h, int pred_mode ) { int mode = 0; if( get_cabac( &h->cabac, &h->cabac_state[68] ) ) return pred_mode; mode += 1 * get_cabac( &h->cabac, &h->cabac_state[69] ); mode += 2 * get_cabac( &h->cabac, &h->cabac_state[69] ); mode += 4 * get_cabac( &h->cabac, &h->cabac_state[69] ); if( mode >= pred_mode ) return mode + 1; else return mode; } static int decode_cabac_mb_chroma_pre_mode( H264Context *h) { const int mba_xy = h->left_mb_xy[0]; const int mbb_xy = h->top_mb_xy; int ctx = 0; /* No need to test for IS_INTRA4x4 and IS_INTRA16x16, as we set chroma_pred_mode_table to 0 */ if( h->slice_table[mba_xy] == h->slice_num && h->chroma_pred_mode_table[mba_xy] != 0 ) ctx++; if( h->slice_table[mbb_xy] == h->slice_num && h->chroma_pred_mode_table[mbb_xy] != 0 ) ctx++; if( get_cabac_noinline( &h->cabac, &h->cabac_state[64+ctx] ) == 0 ) return 0; if( get_cabac_noinline( &h->cabac, &h->cabac_state[64+3] ) == 0 ) return 1; if( get_cabac_noinline( &h->cabac, &h->cabac_state[64+3] ) == 0 ) return 2; else return 3; } static int decode_cabac_mb_cbp_luma( H264Context *h) { int cbp_b, cbp_a, ctx, cbp = 0; cbp_a = h->slice_table[h->left_mb_xy[0]] == h->slice_num ? h->left_cbp : -1; cbp_b = h->slice_table[h->top_mb_xy] == h->slice_num ? h->top_cbp : -1; ctx = !(cbp_a & 0x02) + 2 * !(cbp_b & 0x04); cbp |= get_cabac_noinline(&h->cabac, &h->cabac_state[73 + ctx]); ctx = !(cbp & 0x01) + 2 * !(cbp_b & 0x08); cbp |= get_cabac_noinline(&h->cabac, &h->cabac_state[73 + ctx]) << 1; ctx = !(cbp_a & 0x08) + 2 * !(cbp & 0x01); cbp |= get_cabac_noinline(&h->cabac, &h->cabac_state[73 + ctx]) << 2; ctx = !(cbp & 0x04) + 2 * !(cbp & 0x02); cbp |= get_cabac_noinline(&h->cabac, &h->cabac_state[73 + ctx]) << 3; return cbp; } static int decode_cabac_mb_cbp_chroma( H264Context *h) { int ctx; int cbp_a, cbp_b; cbp_a = (h->left_cbp>>4)&0x03; cbp_b = (h-> top_cbp>>4)&0x03; ctx = 0; if( cbp_a > 0 ) ctx++; if( cbp_b > 0 ) ctx += 2; if( get_cabac_noinline( &h->cabac, &h->cabac_state[77 + ctx] ) == 0 ) return 0; ctx = 4; if( cbp_a == 2 ) ctx++; if( cbp_b == 2 ) ctx += 2; return 1 + get_cabac_noinline( &h->cabac, &h->cabac_state[77 + ctx] ); } static int decode_cabac_mb_dqp( H264Context *h) { int ctx= h->last_qscale_diff != 0; int val = 0; while( get_cabac_noinline( &h->cabac, &h->cabac_state[60 + ctx] ) ) { ctx= 2+(ctx>>1); val++; if(val > 102) //prevent infinite loop return INT_MIN; } if( val&0x01 ) return (val + 1)>>1 ; else return -((val + 1)>>1); } static int decode_cabac_p_mb_sub_type( H264Context *h ) { if( get_cabac( &h->cabac, &h->cabac_state[21] ) ) return 0; /* 8x8 */ if( !get_cabac( &h->cabac, &h->cabac_state[22] ) ) return 1; /* 8x4 */ if( get_cabac( &h->cabac, &h->cabac_state[23] ) ) return 2; /* 4x8 */ return 3; /* 4x4 */ } static int decode_cabac_b_mb_sub_type( H264Context *h ) { int type; if( !get_cabac( &h->cabac, &h->cabac_state[36] ) ) return 0; /* B_Direct_8x8 */ if( !get_cabac( &h->cabac, &h->cabac_state[37] ) ) return 1 + get_cabac( &h->cabac, &h->cabac_state[39] ); /* B_L0_8x8, B_L1_8x8 */ type = 3; if( get_cabac( &h->cabac, &h->cabac_state[38] ) ) { if( get_cabac( &h->cabac, &h->cabac_state[39] ) ) return 11 + get_cabac( &h->cabac, &h->cabac_state[39] ); /* B_L1_4x4, B_Bi_4x4 */ type += 4; } type += 2*get_cabac( &h->cabac, &h->cabac_state[39] ); type += get_cabac( &h->cabac, &h->cabac_state[39] ); return type; } static inline int decode_cabac_mb_transform_size( H264Context *h ) { return get_cabac_noinline( &h->cabac, &h->cabac_state[399 + h->neighbor_transform_size] ); } static int decode_cabac_mb_ref( H264Context *h, int list, int n ) { int refa = h->ref_cache[list][scan8[n] - 1]; int refb = h->ref_cache[list][scan8[n] - 8]; int ref = 0; int ctx = 0; if( h->slice_type_nos == FF_B_TYPE) { if( refa > 0 && !h->direct_cache[scan8[n] - 1] ) ctx++; if( refb > 0 && !h->direct_cache[scan8[n] - 8] ) ctx += 2; } else { if( refa > 0 ) ctx++; if( refb > 0 ) ctx += 2; } while( get_cabac( &h->cabac, &h->cabac_state[54+ctx] ) ) { ref++; ctx = (ctx>>2)+4; if(ref >= 32 /*h->ref_list[list]*/){ return -1; } } return ref; } static int decode_cabac_mb_mvd( H264Context *h, int list, int n, int l ) { int amvd = abs( h->mvd_cache[list][scan8[n] - 1][l] ) + abs( h->mvd_cache[list][scan8[n] - 8][l] ); int ctxbase = (l == 0) ? 40 : 47; int mvd; int ctx = (amvd>2) + (amvd>32); if(!get_cabac(&h->cabac, &h->cabac_state[ctxbase+ctx])) return 0; mvd= 1; ctx= 3; while( mvd < 9 && get_cabac( &h->cabac, &h->cabac_state[ctxbase+ctx] ) ) { mvd++; if( ctx < 6 ) ctx++; } if( mvd >= 9 ) { int k = 3; while( get_cabac_bypass( &h->cabac ) ) { mvd += 1 << k; k++; if(k>24){ av_log(h->s.avctx, AV_LOG_ERROR, "overflow in decode_cabac_mb_mvd\n"); return INT_MIN; } } while( k-- ) { if( get_cabac_bypass( &h->cabac ) ) mvd += 1 << k; } } return get_cabac_bypass_sign( &h->cabac, -mvd ); } static av_always_inline int get_cabac_cbf_ctx( H264Context *h, int cat, int idx, int is_dc ) { int nza, nzb; int ctx = 0; if( is_dc ) { if( cat == 0 ) { nza = h->left_cbp&0x100; nzb = h-> top_cbp&0x100; } else { nza = (h->left_cbp>>(6+idx))&0x01; nzb = (h-> top_cbp>>(6+idx))&0x01; } } else { assert(cat == 1 || cat == 2 || cat == 4); nza = h->non_zero_count_cache[scan8[idx] - 1]; nzb = h->non_zero_count_cache[scan8[idx] - 8]; } if( nza > 0 ) ctx++; if( nzb > 0 ) ctx += 2; return ctx + 4 * cat; } DECLARE_ASM_CONST(1, uint8_t, last_coeff_flag_offset_8x8[63]) = { 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8 }; static av_always_inline void decode_cabac_residual_internal( H264Context *h, DCTELEM *block, int cat, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff, int is_dc ) { static const int significant_coeff_flag_offset[2][6] = { { 105+0, 105+15, 105+29, 105+44, 105+47, 402 }, { 277+0, 277+15, 277+29, 277+44, 277+47, 436 } }; static const int last_coeff_flag_offset[2][6] = { { 166+0, 166+15, 166+29, 166+44, 166+47, 417 }, { 338+0, 338+15, 338+29, 338+44, 338+47, 451 } }; static const int coeff_abs_level_m1_offset[6] = { 227+0, 227+10, 227+20, 227+30, 227+39, 426 }; static const uint8_t significant_coeff_flag_offset_8x8[2][63] = { { 0, 1, 2, 3, 4, 5, 5, 4, 4, 3, 3, 4, 4, 4, 5, 5, 4, 4, 4, 4, 3, 3, 6, 7, 7, 7, 8, 9,10, 9, 8, 7, 7, 6,11,12,13,11, 6, 7, 8, 9,14,10, 9, 8, 6,11, 12,13,11, 6, 9,14,10, 9,11,12,13,11,14,10,12 }, { 0, 1, 1, 2, 2, 3, 3, 4, 5, 6, 7, 7, 7, 8, 4, 5, 6, 9,10,10, 8,11,12,11, 9, 9,10,10, 8,11,12,11, 9, 9,10,10, 8,11,12,11, 9, 9,10,10, 8,13,13, 9, 9,10,10, 8,13,13, 9, 9,10,10,14,14,14,14,14 } }; /* node ctx: 0..3: abslevel1 (with abslevelgt1 == 0). * 4..7: abslevelgt1 + 3 (and abslevel1 doesn't matter). * map node ctx => cabac ctx for level=1 */ static const uint8_t coeff_abs_level1_ctx[8] = { 1, 2, 3, 4, 0, 0, 0, 0 }; /* map node ctx => cabac ctx for level>1 */ static const uint8_t coeff_abs_levelgt1_ctx[8] = { 5, 5, 5, 5, 6, 7, 8, 9 }; static const uint8_t coeff_abs_level_transition[2][8] = { /* update node ctx after decoding a level=1 */ { 1, 2, 3, 3, 4, 5, 6, 7 }, /* update node ctx after decoding a level>1 */ { 4, 4, 4, 4, 5, 6, 7, 7 } }; int index[64]; int av_unused last; int coeff_count = 0; int node_ctx = 0; uint8_t *significant_coeff_ctx_base; uint8_t *last_coeff_ctx_base; uint8_t *abs_level_m1_ctx_base; #if !ARCH_X86 #define CABAC_ON_STACK #endif #ifdef CABAC_ON_STACK #define CC &cc CABACContext cc; cc.range = h->cabac.range; cc.low = h->cabac.low; cc.bytestream= h->cabac.bytestream; #else #define CC &h->cabac #endif /* cat: 0-> DC 16x16 n = 0 * 1-> AC 16x16 n = luma4x4idx * 2-> Luma4x4 n = luma4x4idx * 3-> DC Chroma n = iCbCr * 4-> AC Chroma n = 16 + 4 * iCbCr + chroma4x4idx * 5-> Luma8x8 n = 4 * luma8x8idx */ /* read coded block flag */ if( is_dc || cat != 5 ) { if( get_cabac( CC, &h->cabac_state[85 + get_cabac_cbf_ctx( h, cat, n, is_dc ) ] ) == 0 ) { if( !is_dc ) h->non_zero_count_cache[scan8[n]] = 0; #ifdef CABAC_ON_STACK h->cabac.range = cc.range ; h->cabac.low = cc.low ; h->cabac.bytestream= cc.bytestream; #endif return; } } significant_coeff_ctx_base = h->cabac_state + significant_coeff_flag_offset[MB_FIELD][cat]; last_coeff_ctx_base = h->cabac_state + last_coeff_flag_offset[MB_FIELD][cat]; abs_level_m1_ctx_base = h->cabac_state + coeff_abs_level_m1_offset[cat]; if( !is_dc && cat == 5 ) { #define DECODE_SIGNIFICANCE( coefs, sig_off, last_off ) \ for(last= 0; last < coefs; last++) { \ uint8_t *sig_ctx = significant_coeff_ctx_base + sig_off; \ if( get_cabac( CC, sig_ctx )) { \ uint8_t *last_ctx = last_coeff_ctx_base + last_off; \ index[coeff_count++] = last; \ if( get_cabac( CC, last_ctx ) ) { \ last= max_coeff; \ break; \ } \ } \ }\ if( last == max_coeff -1 ) {\ index[coeff_count++] = last;\ } const uint8_t *sig_off = significant_coeff_flag_offset_8x8[MB_FIELD]; #if ARCH_X86 && HAVE_7REGS && HAVE_EBX_AVAILABLE && !defined(BROKEN_RELOCATIONS) coeff_count= decode_significance_8x8_x86(CC, significant_coeff_ctx_base, index, sig_off); } else { coeff_count= decode_significance_x86(CC, max_coeff, significant_coeff_ctx_base, index); #else DECODE_SIGNIFICANCE( 63, sig_off[last], last_coeff_flag_offset_8x8[last] ); } else { DECODE_SIGNIFICANCE( max_coeff - 1, last, last ); #endif } assert(coeff_count > 0); if( is_dc ) { if( cat == 0 ) h->cbp_table[h->mb_xy] |= 0x100; else h->cbp_table[h->mb_xy] |= 0x40 << n; } else { if( cat == 5 ) fill_rectangle(&h->non_zero_count_cache[scan8[n]], 2, 2, 8, coeff_count, 1); else { assert( cat == 1 || cat == 2 || cat == 4 ); h->non_zero_count_cache[scan8[n]] = coeff_count; } } do { uint8_t *ctx = coeff_abs_level1_ctx[node_ctx] + abs_level_m1_ctx_base; int j= scantable[index[--coeff_count]]; if( get_cabac( CC, ctx ) == 0 ) { node_ctx = coeff_abs_level_transition[0][node_ctx]; if( is_dc ) { block[j] = get_cabac_bypass_sign( CC, -1); }else{ block[j] = (get_cabac_bypass_sign( CC, -qmul[j]) + 32) >> 6; } } else { int coeff_abs = 2; ctx = coeff_abs_levelgt1_ctx[node_ctx] + abs_level_m1_ctx_base; node_ctx = coeff_abs_level_transition[1][node_ctx]; while( coeff_abs < 15 && get_cabac( CC, ctx ) ) { coeff_abs++; } if( coeff_abs >= 15 ) { int j = 0; while( get_cabac_bypass( CC ) ) { j++; } coeff_abs=1; while( j-- ) { coeff_abs += coeff_abs + get_cabac_bypass( CC ); } coeff_abs+= 14; } if( is_dc ) { block[j] = get_cabac_bypass_sign( CC, -coeff_abs ); }else{ block[j] = (get_cabac_bypass_sign( CC, -coeff_abs ) * qmul[j] + 32) >> 6; } } } while( coeff_count ); #ifdef CABAC_ON_STACK h->cabac.range = cc.range ; h->cabac.low = cc.low ; h->cabac.bytestream= cc.bytestream; #endif } #if !CONFIG_SMALL static void decode_cabac_residual_dc( H264Context *h, DCTELEM *block, int cat, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff ) { decode_cabac_residual_internal(h, block, cat, n, scantable, qmul, max_coeff, 1); } static void decode_cabac_residual_nondc( H264Context *h, DCTELEM *block, int cat, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff ) { decode_cabac_residual_internal(h, block, cat, n, scantable, qmul, max_coeff, 0); } #endif static void decode_cabac_residual( H264Context *h, DCTELEM *block, int cat, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff ) { #if CONFIG_SMALL decode_cabac_residual_internal(h, block, cat, n, scantable, qmul, max_coeff, cat == 0 || cat == 3); #else if( cat == 0 || cat == 3 ) decode_cabac_residual_dc(h, block, cat, n, scantable, qmul, max_coeff); else decode_cabac_residual_nondc(h, block, cat, n, scantable, qmul, max_coeff); #endif } static inline void compute_mb_neighbors(H264Context *h) { MpegEncContext * const s = &h->s; const int mb_xy = h->mb_xy; h->top_mb_xy = mb_xy - s->mb_stride; h->left_mb_xy[0] = mb_xy - 1; if(FRAME_MBAFF){ const int pair_xy = s->mb_x + (s->mb_y & ~1)*s->mb_stride; const int top_pair_xy = pair_xy - s->mb_stride; const int top_mb_field_flag = IS_INTERLACED(s->current_picture.mb_type[top_pair_xy]); const int left_mb_field_flag = IS_INTERLACED(s->current_picture.mb_type[pair_xy-1]); const int curr_mb_field_flag = MB_FIELD; const int bottom = (s->mb_y & 1); if (curr_mb_field_flag && (bottom || top_mb_field_flag)){ h->top_mb_xy -= s->mb_stride; } if (!left_mb_field_flag == curr_mb_field_flag) { h->left_mb_xy[0] = pair_xy - 1; } } else if (FIELD_PICTURE) { h->top_mb_xy -= s->mb_stride; } return; } /** * decodes a macroblock * @returns 0 if OK, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed */ static int decode_mb_cabac(H264Context *h) { MpegEncContext * const s = &h->s; int mb_xy; int mb_type, partition_count, cbp = 0; int dct8x8_allowed= h->pps.transform_8x8_mode; mb_xy = h->mb_xy = s->mb_x + s->mb_y*s->mb_stride; tprintf(s->avctx, "pic:%d mb:%d/%d\n", h->frame_num, s->mb_x, s->mb_y); if( h->slice_type_nos != FF_I_TYPE ) { int skip; /* a skipped mb needs the aff flag from the following mb */ if( FRAME_MBAFF && s->mb_x==0 && (s->mb_y&1)==0 ) predict_field_decoding_flag(h); if( FRAME_MBAFF && (s->mb_y&1)==1 && h->prev_mb_skipped ) skip = h->next_mb_skipped; else skip = decode_cabac_mb_skip( h, s->mb_x, s->mb_y ); /* read skip flags */ if( skip ) { if( FRAME_MBAFF && (s->mb_y&1)==0 ){ s->current_picture.mb_type[mb_xy] = MB_TYPE_SKIP; h->next_mb_skipped = decode_cabac_mb_skip( h, s->mb_x, s->mb_y+1 ); if(!h->next_mb_skipped) h->mb_mbaff = h->mb_field_decoding_flag = decode_cabac_field_decoding_flag(h); } decode_mb_skip(h); h->cbp_table[mb_xy] = 0; h->chroma_pred_mode_table[mb_xy] = 0; h->last_qscale_diff = 0; return 0; } } if(FRAME_MBAFF){ if( (s->mb_y&1) == 0 ) h->mb_mbaff = h->mb_field_decoding_flag = decode_cabac_field_decoding_flag(h); } h->prev_mb_skipped = 0; compute_mb_neighbors(h); if( h->slice_type_nos == FF_B_TYPE ) { mb_type = decode_cabac_mb_type_b( h ); 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 == FF_P_TYPE ) { if( get_cabac_noinline( &h->cabac, &h->cabac_state[14] ) == 0 ) { /* P-type */ if( get_cabac_noinline( &h->cabac, &h->cabac_state[15] ) == 0 ) { /* P_L0_D16x16, P_8x8 */ mb_type= 3 * get_cabac_noinline( &h->cabac, &h->cabac_state[16] ); } else { /* P_L0_D8x16, P_L0_D16x8 */ mb_type= 2 - get_cabac_noinline( &h->cabac, &h->cabac_state[17] ); } partition_count= p_mb_type_info[mb_type].partition_count; mb_type= p_mb_type_info[mb_type].type; } else { mb_type= decode_cabac_intra_mb_type(h, 17, 0); goto decode_intra_mb; } } else { mb_type= decode_cabac_intra_mb_type(h, 3, 1); if(h->slice_type == FF_SI_TYPE && mb_type) mb_type--; assert(h->slice_type_nos == FF_I_TYPE); decode_intra_mb: partition_count = 0; cbp= i_mb_type_info[mb_type].cbp; h->intra16x16_pred_mode= i_mb_type_info[mb_type].pred_mode; mb_type= i_mb_type_info[mb_type].type; } if(MB_FIELD) mb_type |= MB_TYPE_INTERLACED; h->slice_table[ mb_xy ]= h->slice_num; if(IS_INTRA_PCM(mb_type)) { const uint8_t *ptr; // We assume these blocks are very rare so we do not optimize it. // FIXME The two following lines get the bitstream position in the cabac // decode, I think it should be done by a function in cabac.h (or cabac.c). ptr= h->cabac.bytestream; if(h->cabac.low&0x1) ptr--; if(CABAC_BITS==16){ if(h->cabac.low&0x1FF) ptr--; } // The pixels are stored in the same order as levels in h->mb array. memcpy(h->mb, ptr, 256); ptr+=256; if(CHROMA){ memcpy(h->mb+128, ptr, 128); ptr+=128; } ff_init_cabac_decoder(&h->cabac, ptr, h->cabac.bytestream_end - ptr); // All blocks are present h->cbp_table[mb_xy] = 0x1ef; h->chroma_pred_mode_table[mb_xy] = 0; // In deblocking, the quantizer is 0 s->current_picture.qscale_table[mb_xy]= 0; // All coeffs are present memset(h->non_zero_count[mb_xy], 16, 16); s->current_picture.mb_type[mb_xy]= mb_type; h->last_qscale_diff = 0; return 0; } if(MB_MBAFF){ h->ref_count[0] <<= 1; h->ref_count[1] <<= 1; } fill_caches(h, mb_type, 0); if( IS_INTRA( mb_type ) ) { int i, pred_mode; if( IS_INTRA4x4( mb_type ) ) { if( dct8x8_allowed && decode_cabac_mb_transform_size( h ) ) { mb_type |= MB_TYPE_8x8DCT; for( i = 0; i < 16; i+=4 ) { int pred = pred_intra_mode( h, i ); int mode = decode_cabac_mb_intra4x4_pred_mode( h, pred ); fill_rectangle( &h->intra4x4_pred_mode_cache[ scan8[i] ], 2, 2, 8, mode, 1 ); } } else { for( i = 0; i < 16; i++ ) { int pred = pred_intra_mode( h, i ); h->intra4x4_pred_mode_cache[ scan8[i] ] = decode_cabac_mb_intra4x4_pred_mode( h, pred ); //av_log( s->avctx, AV_LOG_ERROR, "i4x4 pred=%d mode=%d\n", pred, h->intra4x4_pred_mode_cache[ scan8[i] ] ); } } ff_h264_write_back_intra_pred_mode(h); if( check_intra4x4_pred_mode(h) < 0 ) return -1; } else { h->intra16x16_pred_mode= ff_h264_check_intra_pred_mode( h, h->intra16x16_pred_mode ); if( h->intra16x16_pred_mode < 0 ) return -1; } if(CHROMA){ h->chroma_pred_mode_table[mb_xy] = pred_mode = decode_cabac_mb_chroma_pre_mode( h ); pred_mode= ff_h264_check_intra_pred_mode( h, pred_mode ); if( pred_mode < 0 ) return -1; h->chroma_pred_mode= pred_mode; } } else if( partition_count == 4 ) { int i, j, sub_partition_count[4], list, ref[2][4]; if( h->slice_type_nos == FF_B_TYPE ) { for( i = 0; i < 4; i++ ) { h->sub_mb_type[i] = decode_cabac_b_mb_sub_type( h ); 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; if( h->ref_count[0] > 1 || h->ref_count[1] > 1 ) { for( i = 0; i < 4; i++ ) if( IS_DIRECT(h->sub_mb_type[i]) ) fill_rectangle( &h->direct_cache[scan8[4*i]], 2, 2, 8, 1, 1 ); } } } else { for( i = 0; i < 4; i++ ) { h->sub_mb_type[i] = decode_cabac_p_mb_sub_type( h ); 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++ ) { 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)){ if( h->ref_count[list] > 1 ){ ref[list][i] = decode_cabac_mb_ref( h, list, 4*i ); if(ref[list][i] >= (unsigned)h->ref_count[list]){ av_log(s->avctx, AV_LOG_ERROR, "Reference %d >= %d\n", ref[list][i], h->ref_count[list]); return -1; } }else ref[list][i] = 0; } else { ref[list][i] = -1; } 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(dct8x8_allowed) dct8x8_allowed = get_dct8x8_allowed(h); for(list=0; listlist_count; list++){ for(i=0; i<4; i++){ h->ref_cache[list][ scan8[4*i] ]=h->ref_cache[list][ scan8[4*i]+1 ]; if(IS_DIRECT(h->sub_mb_type[i])){ fill_rectangle(h->mvd_cache[list][scan8[4*i]], 2, 2, 8, 0, 4); continue; } if(IS_DIR(h->sub_mb_type[i], 0, list) && !IS_DIRECT(h->sub_mb_type[i])){ 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; jmv_cache[list][ scan8[index] ]; int16_t (* mvd_cache)[2]= &h->mvd_cache[list][ scan8[index] ]; pred_motion(h, index, block_width, list, h->ref_cache[list][ scan8[index] ], &mpx, &mpy); mx = mpx + decode_cabac_mb_mvd( h, list, index, 0 ); my = mpy + decode_cabac_mb_mvd( h, list, index, 1 ); tprintf(s->avctx, "final mv:%d %d\n", mx, my); if(IS_SUB_8X8(sub_mb_type)){ mv_cache[ 1 ][0]= mv_cache[ 8 ][0]= mv_cache[ 9 ][0]= mx; mv_cache[ 1 ][1]= mv_cache[ 8 ][1]= mv_cache[ 9 ][1]= my; mvd_cache[ 1 ][0]= mvd_cache[ 8 ][0]= mvd_cache[ 9 ][0]= mx - mpx; mvd_cache[ 1 ][1]= mvd_cache[ 8 ][1]= mvd_cache[ 9 ][1]= my - mpy; }else if(IS_SUB_8X4(sub_mb_type)){ mv_cache[ 1 ][0]= mx; mv_cache[ 1 ][1]= my; mvd_cache[ 1 ][0]= mx - mpx; mvd_cache[ 1 ][1]= my - mpy; }else if(IS_SUB_4X8(sub_mb_type)){ mv_cache[ 8 ][0]= mx; mv_cache[ 8 ][1]= my; mvd_cache[ 8 ][0]= mx - mpx; mvd_cache[ 8 ][1]= my - mpy; } mv_cache[ 0 ][0]= mx; mv_cache[ 0 ][1]= my; mvd_cache[ 0 ][0]= mx - mpx; mvd_cache[ 0 ][1]= my - mpy; } }else{ uint32_t *p= (uint32_t *)&h->mv_cache[list][ scan8[4*i] ][0]; uint32_t *pd= (uint32_t *)&h->mvd_cache[list][ scan8[4*i] ][0]; p[0] = p[1] = p[8] = p[9] = 0; pd[0]= pd[1]= pd[8]= pd[9]= 0; } } } } else if( IS_DIRECT(mb_type) ) { ff_h264_pred_direct_motion(h, &mb_type); fill_rectangle(h->mvd_cache[0][scan8[0]], 4, 4, 8, 0, 4); fill_rectangle(h->mvd_cache[1][scan8[0]], 4, 4, 8, 0, 4); dct8x8_allowed &= h->sps.direct_8x8_inference_flag; } else { int list, mx, my, i, mpx, mpy; if(IS_16X16(mb_type)){ for(list=0; listlist_count; list++){ if(IS_DIR(mb_type, 0, list)){ int ref; if(h->ref_count[list] > 1){ ref= decode_cabac_mb_ref(h, list, 0); if(ref >= (unsigned)h->ref_count[list]){ av_log(s->avctx, AV_LOG_ERROR, "Reference %d >= %d\n", ref, h->ref_count[list]); return -1; } }else ref=0; fill_rectangle(&h->ref_cache[list][ scan8[0] ], 4, 4, 8, ref, 1); }else fill_rectangle(&h->ref_cache[list][ scan8[0] ], 4, 4, 8, (uint8_t)LIST_NOT_USED, 1); //FIXME factorize and the other fill_rect below too } for(list=0; listlist_count; list++){ if(IS_DIR(mb_type, 0, list)){ pred_motion(h, 0, 4, list, h->ref_cache[list][ scan8[0] ], &mpx, &mpy); mx = mpx + decode_cabac_mb_mvd( h, list, 0, 0 ); my = mpy + decode_cabac_mb_mvd( h, list, 0, 1 ); tprintf(s->avctx, "final mv:%d %d\n", mx, my); fill_rectangle(h->mvd_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(mx-mpx,my-mpy), 4); fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(mx,my), 4); }else fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, 0, 4); } } else if(IS_16X8(mb_type)){ for(list=0; listlist_count; list++){ for(i=0; i<2; i++){ if(IS_DIR(mb_type, i, list)){ int ref; if(h->ref_count[list] > 1){ ref= decode_cabac_mb_ref( h, list, 8*i ); if(ref >= (unsigned)h->ref_count[list]){ av_log(s->avctx, AV_LOG_ERROR, "Reference %d >= %d\n", ref, h->ref_count[list]); return -1; } }else ref=0; fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, ref, 1); }else fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, (LIST_NOT_USED&0xFF), 1); } } for(list=0; listlist_count; list++){ for(i=0; i<2; i++){ if(IS_DIR(mb_type, i, list)){ pred_16x8_motion(h, 8*i, list, h->ref_cache[list][scan8[0] + 16*i], &mpx, &mpy); mx = mpx + decode_cabac_mb_mvd( h, list, 8*i, 0 ); my = mpy + decode_cabac_mb_mvd( h, list, 8*i, 1 ); tprintf(s->avctx, "final mv:%d %d\n", mx, my); fill_rectangle(h->mvd_cache[list][ scan8[0] + 16*i ], 4, 2, 8, pack16to32(mx-mpx,my-mpy), 4); fill_rectangle(h->mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, pack16to32(mx,my), 4); }else{ fill_rectangle(h->mvd_cache[list][ scan8[0] + 16*i ], 4, 2, 8, 0, 4); fill_rectangle(h-> mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, 0, 4); } } } }else{ assert(IS_8X16(mb_type)); for(list=0; listlist_count; list++){ for(i=0; i<2; i++){ if(IS_DIR(mb_type, i, list)){ //FIXME optimize int ref; if(h->ref_count[list] > 1){ ref= decode_cabac_mb_ref( h, list, 4*i ); if(ref >= (unsigned)h->ref_count[list]){ av_log(s->avctx, AV_LOG_ERROR, "Reference %d >= %d\n", ref, h->ref_count[list]); return -1; } }else ref=0; fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, ref, 1); }else fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, (LIST_NOT_USED&0xFF), 1); } } for(list=0; listlist_count; list++){ for(i=0; i<2; i++){ if(IS_DIR(mb_type, i, list)){ pred_8x16_motion(h, i*4, list, h->ref_cache[list][ scan8[0] + 2*i ], &mpx, &mpy); mx = mpx + decode_cabac_mb_mvd( h, list, 4*i, 0 ); my = mpy + decode_cabac_mb_mvd( h, list, 4*i, 1 ); tprintf(s->avctx, "final mv:%d %d\n", mx, my); fill_rectangle(h->mvd_cache[list][ scan8[0] + 2*i ], 2, 4, 8, pack16to32(mx-mpx,my-mpy), 4); fill_rectangle(h->mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, pack16to32(mx,my), 4); }else{ fill_rectangle(h->mvd_cache[list][ scan8[0] + 2*i ], 2, 4, 8, 0, 4); fill_rectangle(h-> mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, 0, 4); } } } } } if( IS_INTER( mb_type ) ) { h->chroma_pred_mode_table[mb_xy] = 0; write_back_motion( h, mb_type ); } if( !IS_INTRA16x16( mb_type ) ) { cbp = decode_cabac_mb_cbp_luma( h ); if(CHROMA) cbp |= decode_cabac_mb_cbp_chroma( h ) << 4; } h->cbp_table[mb_xy] = h->cbp = cbp; if( dct8x8_allowed && (cbp&15) && !IS_INTRA( mb_type ) ) { if( decode_cabac_mb_transform_size( h ) ) mb_type |= MB_TYPE_8x8DCT; } s->current_picture.mb_type[mb_xy]= mb_type; if( cbp || IS_INTRA16x16( mb_type ) ) { const uint8_t *scan, *scan8x8, *dc_scan; const uint32_t *qmul; int dqp; if(IS_INTERLACED(mb_type)){ scan8x8= s->qscale ? h->field_scan8x8 : h->field_scan8x8_q0; scan= s->qscale ? h->field_scan : h->field_scan_q0; dc_scan= luma_dc_field_scan; }else{ scan8x8= s->qscale ? h->zigzag_scan8x8 : h->zigzag_scan8x8_q0; scan= s->qscale ? h->zigzag_scan : h->zigzag_scan_q0; dc_scan= luma_dc_zigzag_scan; } h->last_qscale_diff = dqp = decode_cabac_mb_dqp( h ); if( dqp == INT_MIN ){ av_log(h->s.avctx, AV_LOG_ERROR, "cabac decode of qscale diff failed at %d %d\n", s->mb_x, s->mb_y); return -1; } s->qscale += dqp; if(((unsigned)s->qscale) > 51){ if(s->qscale<0) s->qscale+= 52; else s->qscale-= 52; } h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale); h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale); if( IS_INTRA16x16( mb_type ) ) { int i; //av_log( s->avctx, AV_LOG_ERROR, "INTRA16x16 DC\n" ); decode_cabac_residual( h, h->mb, 0, 0, dc_scan, NULL, 16); if( cbp&15 ) { qmul = h->dequant4_coeff[0][s->qscale]; for( i = 0; i < 16; i++ ) { //av_log( s->avctx, AV_LOG_ERROR, "INTRA16x16 AC:%d\n", i ); decode_cabac_residual(h, h->mb + 16*i, 1, i, scan + 1, qmul, 15); } } else { fill_rectangle(&h->non_zero_count_cache[scan8[0]], 4, 4, 8, 0, 1); } } else { int i8x8, i4x4; for( i8x8 = 0; i8x8 < 4; i8x8++ ) { if( cbp & (1<mb + 64*i8x8, 5, 4*i8x8, scan8x8, h->dequant8_coeff[IS_INTRA( mb_type ) ? 0:1][s->qscale], 64); } else { qmul = h->dequant4_coeff[IS_INTRA( mb_type ) ? 0:3][s->qscale]; for( i4x4 = 0; i4x4 < 4; i4x4++ ) { const int index = 4*i8x8 + i4x4; //av_log( s->avctx, AV_LOG_ERROR, "Luma4x4: %d\n", index ); //START_TIMER decode_cabac_residual(h, h->mb + 16*index, 2, index, scan, qmul, 16); //STOP_TIMER("decode_residual") } } } else { uint8_t * const nnz= &h->non_zero_count_cache[ scan8[4*i8x8] ]; nnz[0] = nnz[1] = nnz[8] = nnz[9] = 0; } } } if( cbp&0x30 ){ int c; for( c = 0; c < 2; c++ ) { //av_log( s->avctx, AV_LOG_ERROR, "INTRA C%d-DC\n",c ); decode_cabac_residual(h, h->mb + 256 + 16*4*c, 3, c, chroma_dc_scan, NULL, 4); } } if( cbp&0x20 ) { int c, i; for( c = 0; c < 2; c++ ) { qmul = h->dequant4_coeff[c+1+(IS_INTRA( mb_type ) ? 0:3)][h->chroma_qp[c]]; for( i = 0; i < 4; i++ ) { const int index = 16 + 4 * c + i; //av_log( s->avctx, AV_LOG_ERROR, "INTRA C%d-AC %d\n",c, index - 16 ); decode_cabac_residual(h, h->mb + 16*index, 4, index, scan + 1, qmul, 15); } } } else { uint8_t * const nnz= &h->non_zero_count_cache[0]; nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] = nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0; } } else { uint8_t * const nnz= &h->non_zero_count_cache[0]; fill_rectangle(&nnz[scan8[0]], 4, 4, 8, 0, 1); nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] = nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0; h->last_qscale_diff = 0; } s->current_picture.qscale_table[mb_xy]= s->qscale; write_back_non_zero_count(h); if(MB_MBAFF){ h->ref_count[0] >>= 1; h->ref_count[1] >>= 1; } return 0; } static int decode_slice(struct AVCodecContext *avctx, void *arg){ H264Context *h = *(void**)arg; MpegEncContext * const s = &h->s; const int part_mask= s->partitioned_frame ? (AC_END|AC_ERROR) : 0x7F; s->mb_skip_run= -1; h->is_complex = FRAME_MBAFF || s->picture_structure != PICT_FRAME || s->codec_id != CODEC_ID_H264 || (CONFIG_GRAY && (s->flags&CODEC_FLAG_GRAY)); if( h->pps.cabac ) { int i; /* realign */ align_get_bits( &s->gb ); /* init cabac */ ff_init_cabac_states( &h->cabac); ff_init_cabac_decoder( &h->cabac, s->gb.buffer + get_bits_count(&s->gb)/8, (get_bits_left(&s->gb) + 7)/8); /* calculate pre-state */ for( i= 0; i < 460; i++ ) { int pre; if( h->slice_type_nos == FF_I_TYPE ) pre = av_clip( ((cabac_context_init_I[i][0] * s->qscale) >>4 ) + cabac_context_init_I[i][1], 1, 126 ); else pre = av_clip( ((cabac_context_init_PB[h->cabac_init_idc][i][0] * s->qscale) >>4 ) + cabac_context_init_PB[h->cabac_init_idc][i][1], 1, 126 ); if( pre <= 63 ) h->cabac_state[i] = 2 * ( 63 - pre ) + 0; else h->cabac_state[i] = 2 * ( pre - 64 ) + 1; } for(;;){ //START_TIMER int ret = decode_mb_cabac(h); int eos; //STOP_TIMER("decode_mb_cabac") if(ret>=0) ff_h264_hl_decode_mb(h); if( ret >= 0 && FRAME_MBAFF ) { //FIXME optimal? or let mb_decode decode 16x32 ? s->mb_y++; ret = decode_mb_cabac(h); if(ret>=0) ff_h264_hl_decode_mb(h); s->mb_y--; } eos = get_cabac_terminate( &h->cabac ); if( ret < 0 || h->cabac.bytestream > h->cabac.bytestream_end + 2) { av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d, bytestream (%td)\n", s->mb_x, s->mb_y, h->cabac.bytestream_end - h->cabac.bytestream); ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask); return -1; } if( ++s->mb_x >= s->mb_width ) { s->mb_x = 0; ff_draw_horiz_band(s, 16*s->mb_y, 16); ++s->mb_y; if(FIELD_OR_MBAFF_PICTURE) { ++s->mb_y; } } if( eos || s->mb_y >= s->mb_height ) { tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits); ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask); return 0; } } } else { for(;;){ int ret = decode_mb_cavlc(h); if(ret>=0) ff_h264_hl_decode_mb(h); if(ret>=0 && FRAME_MBAFF){ //FIXME optimal? or let mb_decode decode 16x32 ? s->mb_y++; ret = decode_mb_cavlc(h); if(ret>=0) ff_h264_hl_decode_mb(h); s->mb_y--; } if(ret<0){ av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y); ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask); return -1; } if(++s->mb_x >= s->mb_width){ s->mb_x=0; ff_draw_horiz_band(s, 16*s->mb_y, 16); ++s->mb_y; if(FIELD_OR_MBAFF_PICTURE) { ++s->mb_y; } if(s->mb_y >= s->mb_height){ tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits); if(get_bits_count(&s->gb) == s->gb.size_in_bits ) { ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask); return 0; }else{ ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)&part_mask); return -1; } } } if(get_bits_count(&s->gb) >= s->gb.size_in_bits && s->mb_skip_run<=0){ tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits); if(get_bits_count(&s->gb) == s->gb.size_in_bits ){ ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask); return 0; }else{ ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask); return -1; } } } } #if 0 for(;s->mb_y < s->mb_height; s->mb_y++){ for(;s->mb_x < s->mb_width; s->mb_x++){ int ret= decode_mb(h); ff_h264_hl_decode_mb(h); if(ret<0){ av_log(s->avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y); ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask); return -1; } if(++s->mb_x >= s->mb_width){ s->mb_x=0; if(++s->mb_y >= s->mb_height){ if(get_bits_count(s->gb) == s->gb.size_in_bits){ ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask); return 0; }else{ ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)&part_mask); return -1; } } } if(get_bits_count(s->?gb) >= s->gb?.size_in_bits){ if(get_bits_count(s->gb) == s->gb.size_in_bits){ ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask); return 0; }else{ ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask); return -1; } } } s->mb_x=0; ff_draw_horiz_band(s, 16*s->mb_y, 16); } #endif return -1; //not reached } /** * Call decode_slice() for each context. * * @param h h264 master context * @param context_count number of contexts to execute */ static void execute_decode_slices(H264Context *h, int context_count){ MpegEncContext * const s = &h->s; AVCodecContext * const avctx= s->avctx; H264Context *hx; int i; if (s->avctx->hwaccel) return; if(s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU) return; if(context_count == 1) { decode_slice(avctx, &h); } else { for(i = 1; i < context_count; i++) { hx = h->thread_context[i]; hx->s.error_recognition = avctx->error_recognition; hx->s.error_count = 0; } avctx->execute(avctx, (void *)decode_slice, h->thread_context, NULL, context_count, sizeof(void*)); /* pull back stuff from slices to master context */ hx = h->thread_context[context_count - 1]; s->mb_x = hx->s.mb_x; s->mb_y = hx->s.mb_y; s->dropable = hx->s.dropable; s->picture_structure = hx->s.picture_structure; for(i = 1; i < context_count; i++) h->s.error_count += h->thread_context[i]->s.error_count; } } static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){ MpegEncContext * const s = &h->s; AVCodecContext * const avctx= s->avctx; int buf_index=0; H264Context *hx; ///< thread context int context_count = 0; int next_avc= h->is_avc ? 0 : buf_size; h->max_contexts = avctx->thread_count; #if 0 int i; for(i=0; i<50; i++){ av_log(NULL, AV_LOG_ERROR,"%02X ", buf[i]); } #endif if(!(s->flags2 & CODEC_FLAG2_CHUNKS)){ h->current_slice = 0; if (!s->first_field) s->current_picture_ptr= NULL; ff_h264_reset_sei(h); } for(;;){ int consumed; int dst_length; int bit_length; const uint8_t *ptr; int i, nalsize = 0; int err; if(buf_index >= next_avc) { if(buf_index >= buf_size) break; nalsize = 0; for(i = 0; i < h->nal_length_size; i++) nalsize = (nalsize << 8) | buf[buf_index++]; if(nalsize <= 1 || nalsize > buf_size - buf_index){ if(nalsize == 1){ buf_index++; continue; }else{ av_log(h->s.avctx, AV_LOG_ERROR, "AVC: nal size %d\n", nalsize); break; } } next_avc= buf_index + nalsize; } else { // start code prefix search for(; buf_index + 3 < next_avc; buf_index++){ // This should always succeed in the first iteration. if(buf[buf_index] == 0 && buf[buf_index+1] == 0 && buf[buf_index+2] == 1) break; } if(buf_index+3 >= buf_size) break; buf_index+=3; if(buf_index >= next_avc) continue; } hx = h->thread_context[context_count]; ptr= ff_h264_decode_nal(hx, buf + buf_index, &dst_length, &consumed, next_avc - buf_index); if (ptr==NULL || dst_length < 0){ return -1; } while(ptr[dst_length - 1] == 0 && dst_length > 0) dst_length--; bit_length= !dst_length ? 0 : (8*dst_length - ff_h264_decode_rbsp_trailing(h, ptr + dst_length - 1)); if(s->avctx->debug&FF_DEBUG_STARTCODE){ av_log(h->s.avctx, AV_LOG_DEBUG, "NAL %d at %d/%d length %d\n", hx->nal_unit_type, buf_index, buf_size, dst_length); } if (h->is_avc && (nalsize != consumed) && nalsize){ av_log(h->s.avctx, AV_LOG_DEBUG, "AVC: Consumed only %d bytes instead of %d\n", consumed, nalsize); } buf_index += consumed; if( (s->hurry_up == 1 && h->nal_ref_idc == 0) //FIXME do not discard SEI id ||(avctx->skip_frame >= AVDISCARD_NONREF && h->nal_ref_idc == 0)) continue; again: err = 0; switch(hx->nal_unit_type){ case NAL_IDR_SLICE: if (h->nal_unit_type != NAL_IDR_SLICE) { av_log(h->s.avctx, AV_LOG_ERROR, "Invalid mix of idr and non-idr slices"); return -1; } idr(h); //FIXME ensure we don't loose some frames if there is reordering case NAL_SLICE: init_get_bits(&hx->s.gb, ptr, bit_length); hx->intra_gb_ptr= hx->inter_gb_ptr= &hx->s.gb; hx->s.data_partitioning = 0; if((err = decode_slice_header(hx, h))) break; if (s->avctx->hwaccel && h->current_slice == 1) { if (s->avctx->hwaccel->start_frame(s->avctx, NULL, 0) < 0) return -1; } s->current_picture_ptr->key_frame |= (hx->nal_unit_type == NAL_IDR_SLICE) || (h->sei_recovery_frame_cnt >= 0); if(hx->redundant_pic_count==0 && hx->s.hurry_up < 5 && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc) && (avctx->skip_frame < AVDISCARD_BIDIR || hx->slice_type_nos!=FF_B_TYPE) && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE) && avctx->skip_frame < AVDISCARD_ALL){ if(avctx->hwaccel) { if (avctx->hwaccel->decode_slice(avctx, &buf[buf_index - consumed], consumed) < 0) return -1; }else if(CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU){ static const uint8_t start_code[] = {0x00, 0x00, 0x01}; ff_vdpau_add_data_chunk(s, start_code, sizeof(start_code)); ff_vdpau_add_data_chunk(s, &buf[buf_index - consumed], consumed ); }else context_count++; } break; case NAL_DPA: init_get_bits(&hx->s.gb, ptr, bit_length); hx->intra_gb_ptr= hx->inter_gb_ptr= NULL; if ((err = decode_slice_header(hx, h)) < 0) break; hx->s.data_partitioning = 1; break; case NAL_DPB: init_get_bits(&hx->intra_gb, ptr, bit_length); hx->intra_gb_ptr= &hx->intra_gb; break; case NAL_DPC: init_get_bits(&hx->inter_gb, ptr, bit_length); hx->inter_gb_ptr= &hx->inter_gb; if(hx->redundant_pic_count==0 && hx->intra_gb_ptr && hx->s.data_partitioning && s->context_initialized && s->hurry_up < 5 && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc) && (avctx->skip_frame < AVDISCARD_BIDIR || hx->slice_type_nos!=FF_B_TYPE) && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE) && avctx->skip_frame < AVDISCARD_ALL) context_count++; break; case NAL_SEI: init_get_bits(&s->gb, ptr, bit_length); ff_h264_decode_sei(h); break; case NAL_SPS: init_get_bits(&s->gb, ptr, bit_length); ff_h264_decode_seq_parameter_set(h); if(s->flags& CODEC_FLAG_LOW_DELAY) s->low_delay=1; if(avctx->has_b_frames < 2) avctx->has_b_frames= !s->low_delay; break; case NAL_PPS: init_get_bits(&s->gb, ptr, bit_length); ff_h264_decode_picture_parameter_set(h, bit_length); break; case NAL_AUD: case NAL_END_SEQUENCE: case NAL_END_STREAM: case NAL_FILLER_DATA: case NAL_SPS_EXT: case NAL_AUXILIARY_SLICE: break; default: av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n", hx->nal_unit_type, bit_length); } if(context_count == h->max_contexts) { execute_decode_slices(h, context_count); context_count = 0; } if (err < 0) av_log(h->s.avctx, AV_LOG_ERROR, "decode_slice_header error\n"); else if(err == 1) { /* Slice could not be decoded in parallel mode, copy down * NAL unit stuff to context 0 and restart. Note that * rbsp_buffer is not transferred, but since we no longer * run in parallel mode this should not be an issue. */ h->nal_unit_type = hx->nal_unit_type; h->nal_ref_idc = hx->nal_ref_idc; hx = h; goto again; } } if(context_count) execute_decode_slices(h, context_count); return buf_index; } /** * returns the number of bytes consumed for building the current frame */ static int get_consumed_bytes(MpegEncContext *s, int pos, int buf_size){ if(pos==0) pos=1; //avoid infinite loops (i doubt that is needed but ...) if(pos+10>buf_size) pos=buf_size; // oops ;) return pos; } static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt) { const uint8_t *buf = avpkt->data; int buf_size = avpkt->size; H264Context *h = avctx->priv_data; MpegEncContext *s = &h->s; AVFrame *pict = data; int buf_index; s->flags= avctx->flags; s->flags2= avctx->flags2; /* end of stream, output what is still in the buffers */ if (buf_size == 0) { Picture *out; int i, out_idx; //FIXME factorize this with the output code below out = h->delayed_pic[0]; out_idx = 0; for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++) if(h->delayed_pic[i]->poc < out->poc){ out = h->delayed_pic[i]; out_idx = i; } for(i=out_idx; h->delayed_pic[i]; i++) h->delayed_pic[i] = h->delayed_pic[i+1]; if(out){ *data_size = sizeof(AVFrame); *pict= *(AVFrame*)out; } return 0; } if(h->is_avc && !h->got_avcC) { int i, cnt, nalsize; unsigned char *p = avctx->extradata; if(avctx->extradata_size < 7) { av_log(avctx, AV_LOG_ERROR, "avcC too short\n"); return -1; } if(*p != 1) { av_log(avctx, AV_LOG_ERROR, "Unknown avcC version %d\n", *p); return -1; } /* sps and pps in the avcC always have length coded with 2 bytes, so put a fake nal_length_size = 2 while parsing them */ h->nal_length_size = 2; // Decode sps from avcC cnt = *(p+5) & 0x1f; // Number of sps p += 6; for (i = 0; i < cnt; i++) { nalsize = AV_RB16(p) + 2; if(decode_nal_units(h, p, nalsize) < 0) { av_log(avctx, AV_LOG_ERROR, "Decoding sps %d from avcC failed\n", i); return -1; } p += nalsize; } // Decode pps from avcC cnt = *(p++); // Number of pps for (i = 0; i < cnt; i++) { nalsize = AV_RB16(p) + 2; if(decode_nal_units(h, p, nalsize) != nalsize) { av_log(avctx, AV_LOG_ERROR, "Decoding pps %d from avcC failed\n", i); return -1; } p += nalsize; } // Now store right nal length size, that will be use to parse all other nals h->nal_length_size = ((*(((char*)(avctx->extradata))+4))&0x03)+1; // Do not reparse avcC h->got_avcC = 1; } if(!h->got_avcC && !h->is_avc && s->avctx->extradata_size){ if(decode_nal_units(h, s->avctx->extradata, s->avctx->extradata_size) < 0) return -1; h->got_avcC = 1; } buf_index=decode_nal_units(h, buf, buf_size); if(buf_index < 0) return -1; if(!(s->flags2 & CODEC_FLAG2_CHUNKS) && !s->current_picture_ptr){ if (avctx->skip_frame >= AVDISCARD_NONREF || s->hurry_up) return 0; av_log(avctx, AV_LOG_ERROR, "no frame!\n"); return -1; } if(!(s->flags2 & CODEC_FLAG2_CHUNKS) || (s->mb_y >= s->mb_height && s->mb_height)){ Picture *out = s->current_picture_ptr; Picture *cur = s->current_picture_ptr; int i, pics, out_of_order, out_idx; field_end(h); if (cur->field_poc[0]==INT_MAX || cur->field_poc[1]==INT_MAX) { /* Wait for second field. */ *data_size = 0; } else { cur->interlaced_frame = 0; cur->repeat_pict = 0; /* Signal interlacing information externally. */ /* Prioritize picture timing SEI information over used decoding process if it exists. */ if(h->sps.pic_struct_present_flag){ switch (h->sei_pic_struct) { case SEI_PIC_STRUCT_FRAME: break; case SEI_PIC_STRUCT_TOP_FIELD: case SEI_PIC_STRUCT_BOTTOM_FIELD: cur->interlaced_frame = 1; break; case SEI_PIC_STRUCT_TOP_BOTTOM: case SEI_PIC_STRUCT_BOTTOM_TOP: if (FIELD_OR_MBAFF_PICTURE) cur->interlaced_frame = 1; else // try to flag soft telecine progressive cur->interlaced_frame = h->prev_interlaced_frame; break; case SEI_PIC_STRUCT_TOP_BOTTOM_TOP: case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM: // Signal the possibility of telecined film externally (pic_struct 5,6) // From these hints, let the applications decide if they apply deinterlacing. cur->repeat_pict = 1; break; case SEI_PIC_STRUCT_FRAME_DOUBLING: // Force progressive here, as doubling interlaced frame is a bad idea. cur->repeat_pict = 2; break; case SEI_PIC_STRUCT_FRAME_TRIPLING: cur->repeat_pict = 4; break; } if ((h->sei_ct_type & 3) && h->sei_pic_struct <= SEI_PIC_STRUCT_BOTTOM_TOP) cur->interlaced_frame = (h->sei_ct_type & (1<<1)) != 0; }else{ /* Derive interlacing flag from used decoding process. */ cur->interlaced_frame = FIELD_OR_MBAFF_PICTURE; } h->prev_interlaced_frame = cur->interlaced_frame; if (cur->field_poc[0] != cur->field_poc[1]){ /* Derive top_field_first from field pocs. */ cur->top_field_first = cur->field_poc[0] < cur->field_poc[1]; }else{ if(cur->interlaced_frame || h->sps.pic_struct_present_flag){ /* Use picture timing SEI information. Even if it is a information of a past frame, better than nothing. */ if(h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM || h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM_TOP) cur->top_field_first = 1; else cur->top_field_first = 0; }else{ /* Most likely progressive */ cur->top_field_first = 0; } } //FIXME do something with unavailable reference frames /* Sort B-frames into display order */ if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames < h->sps.num_reorder_frames){ s->avctx->has_b_frames = h->sps.num_reorder_frames; s->low_delay = 0; } if( s->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT && !h->sps.bitstream_restriction_flag){ s->avctx->has_b_frames= MAX_DELAYED_PIC_COUNT; s->low_delay= 0; } pics = 0; while(h->delayed_pic[pics]) pics++; assert(pics <= MAX_DELAYED_PIC_COUNT); h->delayed_pic[pics++] = cur; if(cur->reference == 0) cur->reference = DELAYED_PIC_REF; out = h->delayed_pic[0]; out_idx = 0; for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++) if(h->delayed_pic[i]->poc < out->poc){ out = h->delayed_pic[i]; out_idx = i; } if(s->avctx->has_b_frames == 0 && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset)) h->outputed_poc= INT_MIN; out_of_order = out->poc < h->outputed_poc; if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames >= h->sps.num_reorder_frames) { } else if((out_of_order && pics-1 == s->avctx->has_b_frames && s->avctx->has_b_frames < MAX_DELAYED_PIC_COUNT) || (s->low_delay && ((h->outputed_poc != INT_MIN && out->poc > h->outputed_poc + 2) || cur->pict_type == FF_B_TYPE))) { s->low_delay = 0; s->avctx->has_b_frames++; } if(out_of_order || pics > s->avctx->has_b_frames){ out->reference &= ~DELAYED_PIC_REF; for(i=out_idx; h->delayed_pic[i]; i++) h->delayed_pic[i] = h->delayed_pic[i+1]; } if(!out_of_order && pics > s->avctx->has_b_frames){ *data_size = sizeof(AVFrame); if(out_idx==0 && h->delayed_pic[0] && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset)) { h->outputed_poc = INT_MIN; } else h->outputed_poc = out->poc; *pict= *(AVFrame*)out; }else{ av_log(avctx, AV_LOG_DEBUG, "no picture\n"); } } } assert(pict->data[0] || !*data_size); ff_print_debug_info(s, pict); //printf("out %d\n", (int)pict->data[0]); return get_consumed_bytes(s, buf_index, buf_size); } #if 0 static inline void fill_mb_avail(H264Context *h){ MpegEncContext * const s = &h->s; const int mb_xy= s->mb_x + s->mb_y*s->mb_stride; if(s->mb_y){ h->mb_avail[0]= s->mb_x && h->slice_table[mb_xy - s->mb_stride - 1] == h->slice_num; h->mb_avail[1]= h->slice_table[mb_xy - s->mb_stride ] == h->slice_num; h->mb_avail[2]= s->mb_x+1 < s->mb_width && h->slice_table[mb_xy - s->mb_stride + 1] == h->slice_num; }else{ h->mb_avail[0]= h->mb_avail[1]= h->mb_avail[2]= 0; } h->mb_avail[3]= s->mb_x && h->slice_table[mb_xy - 1] == h->slice_num; h->mb_avail[4]= 1; //FIXME move out h->mb_avail[5]= 0; //FIXME move out } #endif #ifdef TEST #undef printf #undef random #define COUNT 8000 #define SIZE (COUNT*40) int main(void){ int i; uint8_t temp[SIZE]; PutBitContext pb; GetBitContext gb; // int int_temp[10000]; DSPContext dsp; AVCodecContext avctx; dsputil_init(&dsp, &avctx); init_put_bits(&pb, temp, SIZE); printf("testing unsigned exp golomb\n"); for(i=0; idsp.h264_idct_add(ref, block, 4); /* for(j=0; j<16; j++){ printf("%d ", ref[j]); } printf("\n");*/ for(j=0; j<16; j++){ int diff= FFABS(src[j] - ref[j]); error+= diff*diff; max_error= FFMAX(max_error, diff); } } printf("error=%f max_error=%d\n", ((float)error)/COUNT/16, (int)max_error ); printf("testing quantizer\n"); for(qp=0; qp<52; qp++){ for(i=0; i<16; i++) src1_block[i]= src2_block[i]= random()%255; } printf("Testing NAL layer\n"); uint8_t bitstream[COUNT]; uint8_t nal[COUNT*2]; H264Context h; memset(&h, 0, sizeof(H264Context)); for(i=0; isps_buffers + i); for(i = 0; i < MAX_PPS_COUNT; i++) av_freep(h->pps_buffers + i); } av_cold int ff_h264_decode_end(AVCodecContext *avctx) { H264Context *h = avctx->priv_data; MpegEncContext *s = &h->s; ff_h264_free_context(h); MPV_common_end(s); // memset(h, 0, sizeof(H264Context)); return 0; } AVCodec h264_decoder = { "h264", CODEC_TYPE_VIDEO, CODEC_ID_H264, sizeof(H264Context), ff_h264_decode_init, NULL, ff_h264_decode_end, decode_frame, /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 | CODEC_CAP_DELAY, .flush= flush_dpb, .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"), .pix_fmts= ff_hwaccel_pixfmt_list_420, }; #if CONFIG_H264_VDPAU_DECODER AVCodec h264_vdpau_decoder = { "h264_vdpau", CODEC_TYPE_VIDEO, CODEC_ID_H264, sizeof(H264Context), ff_h264_decode_init, NULL, ff_h264_decode_end, decode_frame, CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU, .flush= flush_dpb, .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)"), .pix_fmts = (const enum PixelFormat[]){PIX_FMT_VDPAU_H264, PIX_FMT_NONE}, }; #endif