/* * H.26L/H.264/AVC/JVT/14496-10/... direct mb/block decoding * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at> * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** * @file * H.264 / AVC / MPEG4 part10 direct mb/block decoding. * @author Michael Niedermayer <michaelni@gmx.at> */ #include "internal.h" #include "dsputil.h" #include "avcodec.h" #include "mpegvideo.h" #include "h264.h" #include "rectangle.h" #include "thread.h" //#undef NDEBUG #include <assert.h> static int get_scale_factor(H264Context * const h, int poc, int poc1, int i){ int poc0 = h->ref_list[0][i].poc; int td = av_clip(poc1 - poc0, -128, 127); if(td == 0 || h->ref_list[0][i].long_ref){ return 256; }else{ int tb = av_clip(poc - poc0, -128, 127); int tx = (16384 + (FFABS(td) >> 1)) / td; return av_clip((tb*tx + 32) >> 6, -1024, 1023); } } void ff_h264_direct_dist_scale_factor(H264Context * const h){ MpegEncContext * const s = &h->s; const int poc = h->s.current_picture_ptr->field_poc[ s->picture_structure == PICT_BOTTOM_FIELD ]; const int poc1 = h->ref_list[1][0].poc; int i, field; for(field=0; field<2; field++){ const int poc = h->s.current_picture_ptr->field_poc[field]; const int poc1 = h->ref_list[1][0].field_poc[field]; for(i=0; i < 2*h->ref_count[0]; i++) h->dist_scale_factor_field[field][i^field] = get_scale_factor(h, poc, poc1, i+16); } for(i=0; i<h->ref_count[0]; i++){ h->dist_scale_factor[i] = get_scale_factor(h, poc, poc1, i); } } static void fill_colmap(H264Context *h, int map[2][16+32], int list, int field, int colfield, int mbafi){ MpegEncContext * const s = &h->s; Picture * const ref1 = &h->ref_list[1][0]; int j, old_ref, rfield; int start= mbafi ? 16 : 0; int end = mbafi ? 16+2*h->ref_count[0] : h->ref_count[0]; int interl= mbafi || s->picture_structure != PICT_FRAME; /* bogus; fills in for missing frames */ memset(map[list], 0, sizeof(map[list])); for(rfield=0; rfield<2; rfield++){ for(old_ref=0; old_ref<ref1->ref_count[colfield][list]; old_ref++){ int poc = ref1->ref_poc[colfield][list][old_ref]; if (!interl) poc |= 3; else if( interl && (poc&3) == 3) //FIXME store all MBAFF references so this isnt needed poc= (poc&~3) + rfield + 1; for(j=start; j<end; j++){ if(4*h->ref_list[0][j].frame_num + (h->ref_list[0][j].reference&3) == poc){ int cur_ref= mbafi ? (j-16)^field : j; map[list][2*old_ref + (rfield^field) + 16] = cur_ref; if(rfield == field || !interl) map[list][old_ref] = cur_ref; break; } } } } } void ff_h264_direct_ref_list_init(H264Context * const h){ MpegEncContext * const s = &h->s; Picture * const ref1 = &h->ref_list[1][0]; Picture * const cur = s->current_picture_ptr; int list, j, field; int sidx= (s->picture_structure&1)^1; int ref1sidx= (ref1->reference&1)^1; for(list=0; list<2; list++){ cur->ref_count[sidx][list] = h->ref_count[list]; for(j=0; j<h->ref_count[list]; j++) cur->ref_poc[sidx][list][j] = 4*h->ref_list[list][j].frame_num + (h->ref_list[list][j].reference&3); } if(s->picture_structure == PICT_FRAME){ memcpy(cur->ref_count[1], cur->ref_count[0], sizeof(cur->ref_count[0])); memcpy(cur->ref_poc [1], cur->ref_poc [0], sizeof(cur->ref_poc [0])); } cur->mbaff= FRAME_MBAFF; h->col_fieldoff= 0; if(s->picture_structure == PICT_FRAME){ int cur_poc = s->current_picture_ptr->poc; int *col_poc = h->ref_list[1]->field_poc; h->col_parity= (FFABS(col_poc[0] - cur_poc) >= FFABS(col_poc[1] - cur_poc)); ref1sidx=sidx= h->col_parity; }else if(!(s->picture_structure & h->ref_list[1][0].reference) && !h->ref_list[1][0].mbaff){ // FL -> FL & differ parity h->col_fieldoff= 2*(h->ref_list[1][0].reference) - 3; } if(cur->pict_type != FF_B_TYPE || h->direct_spatial_mv_pred) return; for(list=0; list<2; list++){ fill_colmap(h, h->map_col_to_list0, list, sidx, ref1sidx, 0); if(FRAME_MBAFF) for(field=0; field<2; field++) fill_colmap(h, h->map_col_to_list0_field[field], list, field, field, 1); } } static void await_reference_mb_row(H264Context * const h, Picture *ref, int mb_y) { int ref_field = ref->reference - 1; int ref_field_picture = ref->field_picture; int ref_height = 16*h->s.mb_height >> ref_field_picture; if(!HAVE_PTHREADS || !(h->s.avctx->active_thread_type&FF_THREAD_FRAME)) return; //FIXME it can be safe to access mb stuff //even if pixels aren't deblocked yet ff_thread_await_progress((AVFrame*)ref, FFMIN(16*mb_y >> ref_field_picture, ref_height-1), ref_field_picture && ref_field); } static void pred_spatial_direct_motion(H264Context * const h, int *mb_type){ MpegEncContext * const s = &h->s; int b8_stride = 2; int b4_stride = h->b_stride; int mb_xy = h->mb_xy, mb_y = s->mb_y; int mb_type_col[2]; const int16_t (*l1mv0)[2], (*l1mv1)[2]; const int8_t *l1ref0, *l1ref1; const int is_b8x8 = IS_8X8(*mb_type); unsigned int sub_mb_type= MB_TYPE_L0L1; int i8, i4; int ref[2]; int mv[2]; int list; assert(h->ref_list[1][0].reference&3); await_reference_mb_row(h, &h->ref_list[1][0], s->mb_y + !!IS_INTERLACED(*mb_type)); #define MB_TYPE_16x16_OR_INTRA (MB_TYPE_16x16|MB_TYPE_INTRA4x4|MB_TYPE_INTRA16x16|MB_TYPE_INTRA_PCM) /* ref = min(neighbors) */ for(list=0; list<2; list++){ int left_ref = h->ref_cache[list][scan8[0] - 1]; int top_ref = h->ref_cache[list][scan8[0] - 8]; int refc = h->ref_cache[list][scan8[0] - 8 + 4]; const int16_t *C= h->mv_cache[list][ scan8[0] - 8 + 4]; if(refc == PART_NOT_AVAILABLE){ refc = h->ref_cache[list][scan8[0] - 8 - 1]; C = h-> mv_cache[list][scan8[0] - 8 - 1]; } ref[list] = FFMIN3((unsigned)left_ref, (unsigned)top_ref, (unsigned)refc); if(ref[list] >= 0){ //this is just pred_motion() but with the cases removed that cannot happen for direct blocks const int16_t * const A= h->mv_cache[list][ scan8[0] - 1 ]; const int16_t * const B= h->mv_cache[list][ scan8[0] - 8 ]; int match_count= (left_ref==ref[list]) + (top_ref==ref[list]) + (refc==ref[list]); if(match_count > 1){ //most common mv[list]= pack16to32(mid_pred(A[0], B[0], C[0]), mid_pred(A[1], B[1], C[1]) ); }else { assert(match_count==1); if(left_ref==ref[list]){ mv[list]= AV_RN32A(A); }else if(top_ref==ref[list]){ mv[list]= AV_RN32A(B); }else{ mv[list]= AV_RN32A(C); } } }else{ int mask= ~(MB_TYPE_L0 << (2*list)); mv[list] = 0; ref[list] = -1; if(!is_b8x8) *mb_type &= mask; sub_mb_type &= mask; } } if(ref[0] < 0 && ref[1] < 0){ ref[0] = ref[1] = 0; if(!is_b8x8) *mb_type |= MB_TYPE_L0L1; sub_mb_type |= MB_TYPE_L0L1; } if(!(is_b8x8|mv[0]|mv[1])){ fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1); fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1); fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, 0, 4); fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, 0, 4); *mb_type= (*mb_type & ~(MB_TYPE_8x8|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_P1L0|MB_TYPE_P1L1))|MB_TYPE_16x16|MB_TYPE_DIRECT2; return; } if(IS_INTERLACED(h->ref_list[1][0].mb_type[mb_xy])){ // AFL/AFR/FR/FL -> AFL/FL if(!IS_INTERLACED(*mb_type)){ // AFR/FR -> AFL/FL mb_y = (s->mb_y&~1) + h->col_parity; mb_xy= s->mb_x + ((s->mb_y&~1) + h->col_parity)*s->mb_stride; b8_stride = 0; }else{ mb_y += h->col_fieldoff; mb_xy += s->mb_stride*h->col_fieldoff; // non zero for FL -> FL & differ parity } goto single_col; }else{ // AFL/AFR/FR/FL -> AFR/FR if(IS_INTERLACED(*mb_type)){ // AFL /FL -> AFR/FR mb_y = s->mb_y&~1; mb_xy= s->mb_x + (s->mb_y&~1)*s->mb_stride; mb_type_col[0] = h->ref_list[1][0].mb_type[mb_xy]; mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy + s->mb_stride]; b8_stride = 2+4*s->mb_stride; b4_stride *= 6; sub_mb_type |= MB_TYPE_16x16|MB_TYPE_DIRECT2; /* B_SUB_8x8 */ if( (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA) && (mb_type_col[1] & MB_TYPE_16x16_OR_INTRA) && !is_b8x8){ *mb_type |= MB_TYPE_16x8 |MB_TYPE_DIRECT2; /* B_16x8 */ }else{ *mb_type |= MB_TYPE_8x8; } }else{ // AFR/FR -> AFR/FR single_col: mb_type_col[0] = mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy]; sub_mb_type |= MB_TYPE_16x16|MB_TYPE_DIRECT2; /* B_SUB_8x8 */ if(!is_b8x8 && (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)){ *mb_type |= MB_TYPE_16x16|MB_TYPE_DIRECT2; /* B_16x16 */ }else if(!is_b8x8 && (mb_type_col[0] & (MB_TYPE_16x8|MB_TYPE_8x16))){ *mb_type |= MB_TYPE_DIRECT2 | (mb_type_col[0] & (MB_TYPE_16x8|MB_TYPE_8x16)); }else{ if(!h->sps.direct_8x8_inference_flag){ /* FIXME save sub mb types from previous frames (or derive from MVs) * so we know exactly what block size to use */ sub_mb_type += (MB_TYPE_8x8-MB_TYPE_16x16); /* B_SUB_4x4 */ } *mb_type |= MB_TYPE_8x8; } } } await_reference_mb_row(h, &h->ref_list[1][0], mb_y); l1mv0 = &h->ref_list[1][0].motion_val[0][h->mb2b_xy [mb_xy]]; l1mv1 = &h->ref_list[1][0].motion_val[1][h->mb2b_xy [mb_xy]]; l1ref0 = &h->ref_list[1][0].ref_index [0][4*mb_xy]; l1ref1 = &h->ref_list[1][0].ref_index [1][4*mb_xy]; if(!b8_stride){ if(s->mb_y&1){ l1ref0 += 2; l1ref1 += 2; l1mv0 += 2*b4_stride; l1mv1 += 2*b4_stride; } } if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])){ int n=0; for(i8=0; i8<4; i8++){ int x8 = i8&1; int y8 = i8>>1; int xy8 = x8+y8*b8_stride; int xy4 = 3*x8+y8*b4_stride; int a,b; if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8])) continue; h->sub_mb_type[i8] = sub_mb_type; fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1); fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1); if(!IS_INTRA(mb_type_col[y8]) && !h->ref_list[1][0].long_ref && ( (l1ref0[xy8] == 0 && FFABS(l1mv0[xy4][0]) <= 1 && FFABS(l1mv0[xy4][1]) <= 1) || (l1ref0[xy8] < 0 && l1ref1[xy8] == 0 && FFABS(l1mv1[xy4][0]) <= 1 && FFABS(l1mv1[xy4][1]) <= 1))){ a=b=0; if(ref[0] > 0) a= mv[0]; if(ref[1] > 0) b= mv[1]; n++; }else{ a= mv[0]; b= mv[1]; } fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, a, 4); fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, b, 4); } if(!is_b8x8 && !(n&3)) *mb_type= (*mb_type & ~(MB_TYPE_8x8|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_P1L0|MB_TYPE_P1L1))|MB_TYPE_16x16|MB_TYPE_DIRECT2; }else if(IS_16X16(*mb_type)){ int a,b; fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1); fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1); if(!IS_INTRA(mb_type_col[0]) && !h->ref_list[1][0].long_ref && ( (l1ref0[0] == 0 && FFABS(l1mv0[0][0]) <= 1 && FFABS(l1mv0[0][1]) <= 1) || (l1ref0[0] < 0 && l1ref1[0] == 0 && FFABS(l1mv1[0][0]) <= 1 && FFABS(l1mv1[0][1]) <= 1 && h->x264_build>33U))){ a=b=0; if(ref[0] > 0) a= mv[0]; if(ref[1] > 0) b= mv[1]; }else{ a= mv[0]; b= mv[1]; } fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, a, 4); fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, b, 4); }else{ int n=0; for(i8=0; i8<4; i8++){ const int x8 = i8&1; const int y8 = i8>>1; if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8])) continue; h->sub_mb_type[i8] = sub_mb_type; fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, mv[0], 4); fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, mv[1], 4); fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1); fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1); assert(b8_stride==2); /* col_zero_flag */ if(!IS_INTRA(mb_type_col[0]) && !h->ref_list[1][0].long_ref && ( l1ref0[i8] == 0 || (l1ref0[i8] < 0 && l1ref1[i8] == 0 && h->x264_build>33U))){ const int16_t (*l1mv)[2]= l1ref0[i8] == 0 ? l1mv0 : l1mv1; if(IS_SUB_8X8(sub_mb_type)){ const int16_t *mv_col = l1mv[x8*3 + y8*3*b4_stride]; if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){ if(ref[0] == 0) fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4); if(ref[1] == 0) fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4); n+=4; } }else{ int m=0; for(i4=0; i4<4; i4++){ const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*b4_stride]; if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){ if(ref[0] == 0) AV_ZERO32(h->mv_cache[0][scan8[i8*4+i4]]); if(ref[1] == 0) AV_ZERO32(h->mv_cache[1][scan8[i8*4+i4]]); m++; } } if(!(m&3)) h->sub_mb_type[i8]+= MB_TYPE_16x16 - MB_TYPE_8x8; n+=m; } } } if(!is_b8x8 && !(n&15)) *mb_type= (*mb_type & ~(MB_TYPE_8x8|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_P1L0|MB_TYPE_P1L1))|MB_TYPE_16x16|MB_TYPE_DIRECT2; } } static void pred_temp_direct_motion(H264Context * const h, int *mb_type){ MpegEncContext * const s = &h->s; int b8_stride = 2; int b4_stride = h->b_stride; int mb_xy = h->mb_xy, mb_y = s->mb_y; int mb_type_col[2]; const int16_t (*l1mv0)[2], (*l1mv1)[2]; const int8_t *l1ref0, *l1ref1; const int is_b8x8 = IS_8X8(*mb_type); unsigned int sub_mb_type; int i8, i4; assert(h->ref_list[1][0].reference&3); await_reference_mb_row(h, &h->ref_list[1][0], s->mb_y + !!IS_INTERLACED(*mb_type)); if(IS_INTERLACED(h->ref_list[1][0].mb_type[mb_xy])){ // AFL/AFR/FR/FL -> AFL/FL if(!IS_INTERLACED(*mb_type)){ // AFR/FR -> AFL/FL mb_y = (s->mb_y&~1) + h->col_parity; mb_xy= s->mb_x + ((s->mb_y&~1) + h->col_parity)*s->mb_stride; b8_stride = 0; }else{ mb_y += h->col_fieldoff; mb_xy += s->mb_stride*h->col_fieldoff; // non zero for FL -> FL & differ parity } goto single_col; }else{ // AFL/AFR/FR/FL -> AFR/FR if(IS_INTERLACED(*mb_type)){ // AFL /FL -> AFR/FR mb_y = s->mb_y&~1; mb_xy= s->mb_x + (s->mb_y&~1)*s->mb_stride; mb_type_col[0] = h->ref_list[1][0].mb_type[mb_xy]; mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy + s->mb_stride]; b8_stride = 2+4*s->mb_stride; b4_stride *= 6; sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */ if( (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA) && (mb_type_col[1] & MB_TYPE_16x16_OR_INTRA) && !is_b8x8){ *mb_type |= MB_TYPE_16x8 |MB_TYPE_L0L1|MB_TYPE_DIRECT2; /* B_16x8 */ }else{ *mb_type |= MB_TYPE_8x8|MB_TYPE_L0L1; } }else{ // AFR/FR -> AFR/FR single_col: mb_type_col[0] = mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy]; sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */ if(!is_b8x8 && (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)){ *mb_type |= MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_16x16 */ }else if(!is_b8x8 && (mb_type_col[0] & (MB_TYPE_16x8|MB_TYPE_8x16))){ *mb_type |= MB_TYPE_L0L1|MB_TYPE_DIRECT2 | (mb_type_col[0] & (MB_TYPE_16x8|MB_TYPE_8x16)); }else{ if(!h->sps.direct_8x8_inference_flag){ /* FIXME save sub mb types from previous frames (or derive from MVs) * so we know exactly what block size to use */ sub_mb_type = MB_TYPE_8x8|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_4x4 */ } *mb_type |= MB_TYPE_8x8|MB_TYPE_L0L1; } } } await_reference_mb_row(h, &h->ref_list[1][0], mb_y); l1mv0 = &h->ref_list[1][0].motion_val[0][h->mb2b_xy [mb_xy]]; l1mv1 = &h->ref_list[1][0].motion_val[1][h->mb2b_xy [mb_xy]]; l1ref0 = &h->ref_list[1][0].ref_index [0][4*mb_xy]; l1ref1 = &h->ref_list[1][0].ref_index [1][4*mb_xy]; if(!b8_stride){ if(s->mb_y&1){ l1ref0 += 2; l1ref1 += 2; l1mv0 += 2*b4_stride; l1mv1 += 2*b4_stride; } } { const int *map_col_to_list0[2] = {h->map_col_to_list0[0], h->map_col_to_list0[1]}; const int *dist_scale_factor = h->dist_scale_factor; int ref_offset; if(FRAME_MBAFF && IS_INTERLACED(*mb_type)){ map_col_to_list0[0] = h->map_col_to_list0_field[s->mb_y&1][0]; map_col_to_list0[1] = h->map_col_to_list0_field[s->mb_y&1][1]; dist_scale_factor =h->dist_scale_factor_field[s->mb_y&1]; } ref_offset = (h->ref_list[1][0].mbaff<<4) & (mb_type_col[0]>>3); //if(h->ref_list[1][0].mbaff && IS_INTERLACED(mb_type_col[0])) ref_offset=16 else 0 if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])){ int y_shift = 2*!IS_INTERLACED(*mb_type); assert(h->sps.direct_8x8_inference_flag); for(i8=0; i8<4; i8++){ const int x8 = i8&1; const int y8 = i8>>1; int ref0, scale; const int16_t (*l1mv)[2]= l1mv0; if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8])) continue; h->sub_mb_type[i8] = sub_mb_type; fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1); if(IS_INTRA(mb_type_col[y8])){ fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, 0, 1); fill_rectangle(&h-> mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4); fill_rectangle(&h-> mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4); continue; } ref0 = l1ref0[x8 + y8*b8_stride]; if(ref0 >= 0) ref0 = map_col_to_list0[0][ref0 + ref_offset]; else{ ref0 = map_col_to_list0[1][l1ref1[x8 + y8*b8_stride] + ref_offset]; l1mv= l1mv1; } scale = dist_scale_factor[ref0]; fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref0, 1); { const int16_t *mv_col = l1mv[x8*3 + y8*b4_stride]; int my_col = (mv_col[1]<<y_shift)/2; int mx = (scale * mv_col[0] + 128) >> 8; int my = (scale * my_col + 128) >> 8; fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mx,my), 4); fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mx-mv_col[0],my-my_col), 4); } } return; } /* one-to-one mv scaling */ if(IS_16X16(*mb_type)){ int ref, mv0, mv1; fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, 0, 1); if(IS_INTRA(mb_type_col[0])){ ref=mv0=mv1=0; }else{ const int ref0 = l1ref0[0] >= 0 ? map_col_to_list0[0][l1ref0[0] + ref_offset] : map_col_to_list0[1][l1ref1[0] + ref_offset]; const int scale = dist_scale_factor[ref0]; const int16_t *mv_col = l1ref0[0] >= 0 ? l1mv0[0] : l1mv1[0]; int mv_l0[2]; mv_l0[0] = (scale * mv_col[0] + 128) >> 8; mv_l0[1] = (scale * mv_col[1] + 128) >> 8; ref= ref0; mv0= pack16to32(mv_l0[0],mv_l0[1]); mv1= pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]); } fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, ref, 1); fill_rectangle(&h-> mv_cache[0][scan8[0]], 4, 4, 8, mv0, 4); fill_rectangle(&h-> mv_cache[1][scan8[0]], 4, 4, 8, mv1, 4); }else{ for(i8=0; i8<4; i8++){ const int x8 = i8&1; const int y8 = i8>>1; int ref0, scale; const int16_t (*l1mv)[2]= l1mv0; if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8])) continue; h->sub_mb_type[i8] = sub_mb_type; fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1); if(IS_INTRA(mb_type_col[0])){ fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, 0, 1); fill_rectangle(&h-> mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4); fill_rectangle(&h-> mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4); continue; } assert(b8_stride == 2); ref0 = l1ref0[i8]; if(ref0 >= 0) ref0 = map_col_to_list0[0][ref0 + ref_offset]; else{ ref0 = map_col_to_list0[1][l1ref1[i8] + ref_offset]; l1mv= l1mv1; } scale = dist_scale_factor[ref0]; fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref0, 1); if(IS_SUB_8X8(sub_mb_type)){ const int16_t *mv_col = l1mv[x8*3 + y8*3*b4_stride]; int mx = (scale * mv_col[0] + 128) >> 8; int my = (scale * mv_col[1] + 128) >> 8; fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mx,my), 4); fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mx-mv_col[0],my-mv_col[1]), 4); }else for(i4=0; i4<4; i4++){ const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*b4_stride]; int16_t *mv_l0 = h->mv_cache[0][scan8[i8*4+i4]]; mv_l0[0] = (scale * mv_col[0] + 128) >> 8; mv_l0[1] = (scale * mv_col[1] + 128) >> 8; AV_WN32A(h->mv_cache[1][scan8[i8*4+i4]], pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1])); } } } } } void ff_h264_pred_direct_motion(H264Context * const h, int *mb_type){ if(h->direct_spatial_mv_pred){ pred_spatial_direct_motion(h, mb_type); }else{ pred_temp_direct_motion(h, mb_type); } }