| /* |
| * 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].f.reference & 3) == poc) { |
| int cur_ref= mbafi ? (j-16)^field : j; |
| if(ref1->mbaff) |
| 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->f.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].f.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].f.reference) && !h->ref_list[1][0].mbaff) { // FL -> FL & differ parity |
| h->col_fieldoff = 2 * h->ref_list[1][0].f.reference - 3; |
| } |
| |
| if (cur->f.pict_type != AV_PICTURE_TYPE_B || 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->f.reference - 1; |
| int ref_field_picture = ref->field_picture; |
| int ref_height = 16*h->s.mb_height >> ref_field_picture; |
| |
| if(!HAVE_THREADS || !(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].f.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].f.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].f.mb_type[mb_xy]; |
| mb_type_col[1] = h->ref_list[1][0].f.mb_type[mb_xy + s->mb_stride]; |
| b8_stride = 2+4*s->mb_stride; |
| b4_stride *= 6; |
| if (IS_INTERLACED(mb_type_col[0]) != IS_INTERLACED(mb_type_col[1])) { |
| mb_type_col[0] &= ~MB_TYPE_INTERLACED; |
| mb_type_col[1] &= ~MB_TYPE_INTERLACED; |
| } |
| |
| 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].f.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].f.motion_val[0][h->mb2b_xy [mb_xy]]; |
| l1mv1 = &h->ref_list[1][0].f.motion_val[1][h->mb2b_xy [mb_xy]]; |
| l1ref0 = &h->ref_list[1][0].f.ref_index [0][4 * mb_xy]; |
| l1ref1 = &h->ref_list[1][0].f.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].f.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].f.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].f.mb_type[mb_xy]; |
| mb_type_col[1] = h->ref_list[1][0].f.mb_type[mb_xy + s->mb_stride]; |
| b8_stride = 2+4*s->mb_stride; |
| b4_stride *= 6; |
| if (IS_INTERLACED(mb_type_col[0]) != IS_INTERLACED(mb_type_col[1])) { |
| mb_type_col[0] &= ~MB_TYPE_INTERLACED; |
| mb_type_col[1] &= ~MB_TYPE_INTERLACED; |
| } |
| |
| 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].f.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].f.motion_val[0][h->mb2b_xy [mb_xy]]; |
| l1mv1 = &h->ref_list[1][0].f.motion_val[1][h->mb2b_xy [mb_xy]]; |
| l1ref0 = &h->ref_list[1][0].f.ref_index [0][4 * mb_xy]; |
| l1ref1 = &h->ref_list[1][0].f.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); |
| } |
| } |
