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590 lines
24 KiB
590 lines
24 KiB
/* |
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* H.26L/H.264/AVC/JVT/14496-10/... direct mb/block decoding |
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* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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|
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/** |
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* @file libavcodec/h264_direct.c |
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* H.264 / AVC / MPEG4 part10 direct mb/block decoding. |
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* @author Michael Niedermayer <michaelni@gmx.at> |
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*/ |
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|
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#include "internal.h" |
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#include "dsputil.h" |
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#include "avcodec.h" |
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#include "mpegvideo.h" |
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#include "h264.h" |
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#include "rectangle.h" |
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|
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//#undef NDEBUG |
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#include <assert.h> |
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static int get_scale_factor(H264Context * const h, int poc, int poc1, int i){ |
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int poc0 = h->ref_list[0][i].poc; |
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int td = av_clip(poc1 - poc0, -128, 127); |
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if(td == 0 || h->ref_list[0][i].long_ref){ |
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return 256; |
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}else{ |
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int tb = av_clip(poc - poc0, -128, 127); |
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int tx = (16384 + (FFABS(td) >> 1)) / td; |
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return av_clip((tb*tx + 32) >> 6, -1024, 1023); |
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} |
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} |
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|
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void ff_h264_direct_dist_scale_factor(H264Context * const h){ |
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MpegEncContext * const s = &h->s; |
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const int poc = h->s.current_picture_ptr->field_poc[ s->picture_structure == PICT_BOTTOM_FIELD ]; |
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const int poc1 = h->ref_list[1][0].poc; |
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int i, field; |
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for(field=0; field<2; field++){ |
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const int poc = h->s.current_picture_ptr->field_poc[field]; |
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const int poc1 = h->ref_list[1][0].field_poc[field]; |
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for(i=0; i < 2*h->ref_count[0]; i++) |
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h->dist_scale_factor_field[field][i^field] = get_scale_factor(h, poc, poc1, i+16); |
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} |
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for(i=0; i<h->ref_count[0]; i++){ |
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h->dist_scale_factor[i] = get_scale_factor(h, poc, poc1, i); |
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} |
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} |
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static void fill_colmap(H264Context *h, int map[2][16+32], int list, int field, int colfield, int mbafi){ |
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MpegEncContext * const s = &h->s; |
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Picture * const ref1 = &h->ref_list[1][0]; |
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int j, old_ref, rfield; |
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int start= mbafi ? 16 : 0; |
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int end = mbafi ? 16+2*h->ref_count[0] : h->ref_count[0]; |
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int interl= mbafi || s->picture_structure != PICT_FRAME; |
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|
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/* bogus; fills in for missing frames */ |
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memset(map[list], 0, sizeof(map[list])); |
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for(rfield=0; rfield<2; rfield++){ |
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for(old_ref=0; old_ref<ref1->ref_count[colfield][list]; old_ref++){ |
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int poc = ref1->ref_poc[colfield][list][old_ref]; |
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if (!interl) |
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poc |= 3; |
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else if( interl && (poc&3) == 3) //FIXME store all MBAFF references so this isnt needed |
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poc= (poc&~3) + rfield + 1; |
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for(j=start; j<end; j++){ |
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if(4*h->ref_list[0][j].frame_num + (h->ref_list[0][j].reference&3) == poc){ |
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int cur_ref= mbafi ? (j-16)^field : j; |
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map[list][2*old_ref + (rfield^field) + 16] = cur_ref; |
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if(rfield == field || !interl) |
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map[list][old_ref] = cur_ref; |
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break; |
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} |
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} |
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} |
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} |
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} |
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void ff_h264_direct_ref_list_init(H264Context * const h){ |
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MpegEncContext * const s = &h->s; |
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Picture * const ref1 = &h->ref_list[1][0]; |
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Picture * const cur = s->current_picture_ptr; |
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int list, j, field; |
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int sidx= (s->picture_structure&1)^1; |
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int ref1sidx= (ref1->reference&1)^1; |
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for(list=0; list<2; list++){ |
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cur->ref_count[sidx][list] = h->ref_count[list]; |
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for(j=0; j<h->ref_count[list]; j++) |
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cur->ref_poc[sidx][list][j] = 4*h->ref_list[list][j].frame_num + (h->ref_list[list][j].reference&3); |
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} |
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if(s->picture_structure == PICT_FRAME){ |
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memcpy(cur->ref_count[1], cur->ref_count[0], sizeof(cur->ref_count[0])); |
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memcpy(cur->ref_poc [1], cur->ref_poc [0], sizeof(cur->ref_poc [0])); |
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} |
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cur->mbaff= FRAME_MBAFF; |
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h->col_fieldoff= 0; |
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if(s->picture_structure == PICT_FRAME){ |
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int cur_poc = s->current_picture_ptr->poc; |
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int *col_poc = h->ref_list[1]->field_poc; |
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h->col_parity= (FFABS(col_poc[0] - cur_poc) >= FFABS(col_poc[1] - cur_poc)); |
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ref1sidx=sidx= h->col_parity; |
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}else if(!(s->picture_structure & h->ref_list[1][0].reference) && !h->ref_list[1][0].mbaff){ // FL -> FL & differ parity |
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h->col_fieldoff= s->mb_stride*(2*(h->ref_list[1][0].reference) - 3); |
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} |
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if(cur->pict_type != FF_B_TYPE || h->direct_spatial_mv_pred) |
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return; |
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for(list=0; list<2; list++){ |
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fill_colmap(h, h->map_col_to_list0, list, sidx, ref1sidx, 0); |
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if(FRAME_MBAFF) |
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for(field=0; field<2; field++) |
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fill_colmap(h, h->map_col_to_list0_field[field], list, field, field, 1); |
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} |
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} |
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static void pred_spatial_direct_motion(H264Context * const h, int *mb_type){ |
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MpegEncContext * const s = &h->s; |
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int b8_stride = 2; |
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int b4_stride = h->b_stride; |
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int mb_xy = h->mb_xy; |
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int mb_type_col[2]; |
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const int16_t (*l1mv0)[2], (*l1mv1)[2]; |
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const int8_t *l1ref0, *l1ref1; |
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const int is_b8x8 = IS_8X8(*mb_type); |
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unsigned int sub_mb_type= MB_TYPE_L0L1; |
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int i8, i4; |
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int ref[2]; |
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int mv[2]; |
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int list; |
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assert(h->ref_list[1][0].reference&3); |
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#define MB_TYPE_16x16_OR_INTRA (MB_TYPE_16x16|MB_TYPE_INTRA4x4|MB_TYPE_INTRA16x16|MB_TYPE_INTRA_PCM) |
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/* ref = min(neighbors) */ |
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for(list=0; list<2; list++){ |
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int left_ref = h->ref_cache[list][scan8[0] - 1]; |
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int top_ref = h->ref_cache[list][scan8[0] - 8]; |
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int refc = h->ref_cache[list][scan8[0] - 8 + 4]; |
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const int16_t *C= h->mv_cache[list][ scan8[0] - 8 + 4]; |
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if(refc == PART_NOT_AVAILABLE){ |
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refc = h->ref_cache[list][scan8[0] - 8 - 1]; |
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C = h-> mv_cache[list][scan8[0] - 8 - 1]; |
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} |
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ref[list] = FFMIN3((unsigned)left_ref, (unsigned)top_ref, (unsigned)refc); |
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if(ref[list] >= 0){ |
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//this is just pred_motion() but with the cases removed that cannot happen for direct blocks |
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const int16_t * const A= h->mv_cache[list][ scan8[0] - 1 ]; |
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const int16_t * const B= h->mv_cache[list][ scan8[0] - 8 ]; |
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int match_count= (left_ref==ref[list]) + (top_ref==ref[list]) + (refc==ref[list]); |
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if(match_count > 1){ //most common |
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mv[list]= pack16to32(mid_pred(A[0], B[0], C[0]), |
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mid_pred(A[1], B[1], C[1]) ); |
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}else { |
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assert(match_count==1); |
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if(left_ref==ref[list]){ |
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mv[list]= AV_RN32A(A); |
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}else if(top_ref==ref[list]){ |
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mv[list]= AV_RN32A(B); |
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}else{ |
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mv[list]= AV_RN32A(C); |
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} |
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} |
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}else{ |
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int mask= ~(MB_TYPE_L0 << (2*list)); |
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mv[list] = 0; |
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ref[list] = -1; |
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if(!is_b8x8) |
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*mb_type &= mask; |
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sub_mb_type &= mask; |
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} |
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} |
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if(ref[0] < 0 && ref[1] < 0){ |
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ref[0] = ref[1] = 0; |
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if(!is_b8x8) |
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*mb_type |= MB_TYPE_L0L1; |
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sub_mb_type |= MB_TYPE_L0L1; |
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} |
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if(!(is_b8x8|mv[0]|mv[1])){ |
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fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1); |
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fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1); |
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fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, 0, 4); |
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fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, 0, 4); |
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*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; |
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return; |
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} |
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if(IS_INTERLACED(h->ref_list[1][0].mb_type[mb_xy])){ // AFL/AFR/FR/FL -> AFL/FL |
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if(!IS_INTERLACED(*mb_type)){ // AFR/FR -> AFL/FL |
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mb_xy= s->mb_x + ((s->mb_y&~1) + h->col_parity)*s->mb_stride; |
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b8_stride = 0; |
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}else{ |
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mb_xy += h->col_fieldoff; // non zero for FL -> FL & differ parity |
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} |
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goto single_col; |
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}else{ // AFL/AFR/FR/FL -> AFR/FR |
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if(IS_INTERLACED(*mb_type)){ // AFL /FL -> AFR/FR |
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mb_xy= s->mb_x + (s->mb_y&~1)*s->mb_stride; |
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mb_type_col[0] = h->ref_list[1][0].mb_type[mb_xy]; |
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mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy + s->mb_stride]; |
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b8_stride = 2+4*s->mb_stride; |
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b4_stride *= 6; |
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sub_mb_type |= MB_TYPE_16x16|MB_TYPE_DIRECT2; /* B_SUB_8x8 */ |
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if( (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA) |
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&& (mb_type_col[1] & MB_TYPE_16x16_OR_INTRA) |
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&& !is_b8x8){ |
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*mb_type |= MB_TYPE_16x8 |MB_TYPE_DIRECT2; /* B_16x8 */ |
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}else{ |
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*mb_type |= MB_TYPE_8x8; |
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} |
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}else{ // AFR/FR -> AFR/FR |
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single_col: |
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mb_type_col[0] = |
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mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy]; |
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sub_mb_type |= MB_TYPE_16x16|MB_TYPE_DIRECT2; /* B_SUB_8x8 */ |
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if(!is_b8x8 && (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)){ |
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*mb_type |= MB_TYPE_16x16|MB_TYPE_DIRECT2; /* B_16x16 */ |
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}else if(!is_b8x8 && (mb_type_col[0] & (MB_TYPE_16x8|MB_TYPE_8x16))){ |
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*mb_type |= MB_TYPE_DIRECT2 | (mb_type_col[0] & (MB_TYPE_16x8|MB_TYPE_8x16)); |
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}else{ |
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if(!h->sps.direct_8x8_inference_flag){ |
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/* FIXME save sub mb types from previous frames (or derive from MVs) |
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* so we know exactly what block size to use */ |
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sub_mb_type += (MB_TYPE_8x8-MB_TYPE_16x16); /* B_SUB_4x4 */ |
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} |
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*mb_type |= MB_TYPE_8x8; |
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} |
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} |
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} |
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l1mv0 = &h->ref_list[1][0].motion_val[0][h->mb2b_xy [mb_xy]]; |
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l1mv1 = &h->ref_list[1][0].motion_val[1][h->mb2b_xy [mb_xy]]; |
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l1ref0 = &h->ref_list[1][0].ref_index [0][4*mb_xy]; |
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l1ref1 = &h->ref_list[1][0].ref_index [1][4*mb_xy]; |
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if(!b8_stride){ |
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if(s->mb_y&1){ |
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l1ref0 += 2; |
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l1ref1 += 2; |
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l1mv0 += 2*b4_stride; |
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l1mv1 += 2*b4_stride; |
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} |
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} |
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if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])){ |
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int n=0; |
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for(i8=0; i8<4; i8++){ |
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int x8 = i8&1; |
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int y8 = i8>>1; |
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int xy8 = x8+y8*b8_stride; |
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int xy4 = 3*x8+y8*b4_stride; |
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int a,b; |
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if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8])) |
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continue; |
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h->sub_mb_type[i8] = sub_mb_type; |
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fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1); |
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fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1); |
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if(!IS_INTRA(mb_type_col[y8]) && !h->ref_list[1][0].long_ref |
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&& ( (l1ref0[xy8] == 0 && FFABS(l1mv0[xy4][0]) <= 1 && FFABS(l1mv0[xy4][1]) <= 1) |
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|| (l1ref0[xy8] < 0 && l1ref1[xy8] == 0 && FFABS(l1mv1[xy4][0]) <= 1 && FFABS(l1mv1[xy4][1]) <= 1))){ |
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a=b=0; |
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if(ref[0] > 0) |
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a= mv[0]; |
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if(ref[1] > 0) |
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b= mv[1]; |
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n++; |
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}else{ |
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a= mv[0]; |
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b= mv[1]; |
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} |
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fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, a, 4); |
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fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, b, 4); |
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} |
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if(!is_b8x8 && !(n&3)) |
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*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; |
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}else if(IS_16X16(*mb_type)){ |
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int a,b; |
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fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1); |
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fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1); |
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if(!IS_INTRA(mb_type_col[0]) && !h->ref_list[1][0].long_ref |
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&& ( (l1ref0[0] == 0 && FFABS(l1mv0[0][0]) <= 1 && FFABS(l1mv0[0][1]) <= 1) |
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|| (l1ref0[0] < 0 && l1ref1[0] == 0 && FFABS(l1mv1[0][0]) <= 1 && FFABS(l1mv1[0][1]) <= 1 |
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&& h->x264_build>33U))){ |
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a=b=0; |
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if(ref[0] > 0) |
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a= mv[0]; |
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if(ref[1] > 0) |
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b= mv[1]; |
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}else{ |
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a= mv[0]; |
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b= mv[1]; |
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} |
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fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, a, 4); |
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fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, b, 4); |
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}else{ |
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int n=0; |
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for(i8=0; i8<4; i8++){ |
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const int x8 = i8&1; |
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const int y8 = i8>>1; |
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if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8])) |
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continue; |
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h->sub_mb_type[i8] = sub_mb_type; |
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fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, mv[0], 4); |
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fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, mv[1], 4); |
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fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1); |
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fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1); |
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assert(b8_stride==2); |
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/* col_zero_flag */ |
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if(!IS_INTRA(mb_type_col[0]) && !h->ref_list[1][0].long_ref && ( l1ref0[i8] == 0 |
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|| (l1ref0[i8] < 0 && l1ref1[i8] == 0 |
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&& h->x264_build>33U))){ |
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const int16_t (*l1mv)[2]= l1ref0[i8] == 0 ? l1mv0 : l1mv1; |
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if(IS_SUB_8X8(sub_mb_type)){ |
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const int16_t *mv_col = l1mv[x8*3 + y8*3*b4_stride]; |
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if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){ |
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if(ref[0] == 0) |
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fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4); |
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if(ref[1] == 0) |
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fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4); |
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n+=4; |
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} |
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}else{ |
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int m=0; |
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for(i4=0; i4<4; i4++){ |
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const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*b4_stride]; |
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if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){ |
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if(ref[0] == 0) |
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AV_ZERO32(h->mv_cache[0][scan8[i8*4+i4]]); |
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if(ref[1] == 0) |
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AV_ZERO32(h->mv_cache[1][scan8[i8*4+i4]]); |
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m++; |
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} |
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} |
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if(!(m&3)) |
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h->sub_mb_type[i8]+= MB_TYPE_16x16 - MB_TYPE_8x8; |
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n+=m; |
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} |
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} |
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} |
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if(!is_b8x8 && !(n&15)) |
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*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; |
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} |
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} |
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static void pred_temp_direct_motion(H264Context * const h, int *mb_type){ |
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MpegEncContext * const s = &h->s; |
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int b8_stride = 2; |
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int b4_stride = h->b_stride; |
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int mb_xy = h->mb_xy; |
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int mb_type_col[2]; |
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const int16_t (*l1mv0)[2], (*l1mv1)[2]; |
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const int8_t *l1ref0, *l1ref1; |
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const int is_b8x8 = IS_8X8(*mb_type); |
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unsigned int sub_mb_type; |
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int i8, i4; |
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|
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assert(h->ref_list[1][0].reference&3); |
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|
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if(IS_INTERLACED(h->ref_list[1][0].mb_type[mb_xy])){ // AFL/AFR/FR/FL -> AFL/FL |
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if(!IS_INTERLACED(*mb_type)){ // AFR/FR -> AFL/FL |
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mb_xy= s->mb_x + ((s->mb_y&~1) + h->col_parity)*s->mb_stride; |
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b8_stride = 0; |
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}else{ |
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mb_xy += h->col_fieldoff; // non zero for FL -> FL & differ parity |
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} |
|
goto single_col; |
|
}else{ // AFL/AFR/FR/FL -> AFR/FR |
|
if(IS_INTERLACED(*mb_type)){ // AFL /FL -> AFR/FR |
|
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; |
|
} |
|
} |
|
} |
|
|
|
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); |
|
} |
|
}
|
|
|