ffmpeg / libavcodec / h264_direct.c @ 923bcb40
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/*
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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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* @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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#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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//#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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|
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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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/* 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 = h->b8_stride;
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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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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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*mb_type |= MB_TYPE_L0L1; |
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sub_mb_type |= MB_TYPE_L0L1; |
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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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|
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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]= (mid_pred(A[0], B[0], C[0])&0xFFFF) |
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+(mid_pred(A[1], B[1], C[1])<<16); |
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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]= *(uint32_t*)A; |
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}else if(top_ref==ref[list]){ |
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mv[list]= *(uint32_t*)B; |
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}else{
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mv[list]= *(uint32_t*)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]) == 0){ |
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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 *= 3;
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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][h->mb2b8_xy[mb_xy]]; |
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l1ref1 = &h->ref_list[1][0].ref_index [1][h->mb2b8_xy[mb_xy]]; |
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if(!b8_stride){
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if(s->mb_y&1){ |
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l1ref0 += h->b8_stride; |
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l1ref1 += h->b8_stride; |
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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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|
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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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| 314 |
|
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fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1); |
| 316 |
fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1); |
| 317 |
if(!IS_INTRA(mb_type_col[0]) && !h->ref_list[1][0].long_ref |
| 318 |
&& ( (l1ref0[0] == 0 && FFABS(l1mv0[0][0]) <= 1 && FFABS(l1mv0[0][1]) <= 1) |
| 319 |
|| (l1ref0[0] < 0 && l1ref1[0] == 0 && FFABS(l1mv1[0][0]) <= 1 && FFABS(l1mv1[0][1]) <= 1 |
| 320 |
&& h->x264_build>33U))){
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a=b=0;
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| 322 |
if(ref[0] > 0) |
| 323 |
a= mv[0];
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| 324 |
if(ref[1] > 0) |
| 325 |
b= mv[1];
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}else{
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a= mv[0];
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| 328 |
b= mv[1];
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} |
| 330 |
fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, a, 4); |
| 331 |
fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, b, 4); |
| 332 |
}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; |
| 336 |
const int y8 = i8>>1; |
| 337 |
|
| 338 |
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; |
| 341 |
|
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fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, mv[0], 4); |
| 343 |
fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, mv[1], 4); |
| 344 |
fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1); |
| 345 |
fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1); |
| 346 |
|
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/* col_zero_flag */
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| 348 |
if(!IS_INTRA(mb_type_col[0]) && !h->ref_list[1][0].long_ref && ( l1ref0[x8 + y8*b8_stride] == 0 |
| 349 |
|| (l1ref0[x8 + y8*b8_stride] < 0 && l1ref1[x8 + y8*b8_stride] == 0 |
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&& h->x264_build>33U))){
|
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const int16_t (*l1mv)[2]= l1ref0[x8 + y8*b8_stride] == 0 ? l1mv0 : l1mv1; |
| 352 |
if(IS_SUB_8X8(sub_mb_type)){
|
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const int16_t *mv_col = l1mv[x8*3 + y8*3*b4_stride]; |
| 354 |
if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){ |
| 355 |
if(ref[0] == 0) |
| 356 |
fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4); |
| 357 |
if(ref[1] == 0) |
| 358 |
fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4); |
| 359 |
n+=4;
|
| 360 |
} |
| 361 |
}else{
|
| 362 |
int m=0; |
| 363 |
for(i4=0; i4<4; i4++){ |
| 364 |
const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*b4_stride]; |
| 365 |
if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){ |
| 366 |
if(ref[0] == 0) |
| 367 |
*(uint32_t*)h->mv_cache[0][scan8[i8*4+i4]] = 0; |
| 368 |
if(ref[1] == 0) |
| 369 |
*(uint32_t*)h->mv_cache[1][scan8[i8*4+i4]] = 0; |
| 370 |
m++; |
| 371 |
} |
| 372 |
} |
| 373 |
if(!(m&3)) |
| 374 |
h->sub_mb_type[i8]+= MB_TYPE_16x16 - MB_TYPE_8x8; |
| 375 |
n+=m; |
| 376 |
} |
| 377 |
} |
| 378 |
} |
| 379 |
if(!is_b8x8 && !(n&15)) |
| 380 |
*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; |
| 381 |
} |
| 382 |
} |
| 383 |
|
| 384 |
static void pred_temp_direct_motion(H264Context * const h, int *mb_type){ |
| 385 |
MpegEncContext * const s = &h->s;
|
| 386 |
int b8_stride = h->b8_stride;
|
| 387 |
int b4_stride = h->b_stride;
|
| 388 |
int mb_xy = h->mb_xy;
|
| 389 |
int mb_type_col[2]; |
| 390 |
const int16_t (*l1mv0)[2], (*l1mv1)[2]; |
| 391 |
const int8_t *l1ref0, *l1ref1;
|
| 392 |
const int is_b8x8 = IS_8X8(*mb_type); |
| 393 |
unsigned int sub_mb_type; |
| 394 |
int i8, i4;
|
| 395 |
|
| 396 |
assert(h->ref_list[1][0].reference&3); |
| 397 |
|
| 398 |
if(IS_INTERLACED(h->ref_list[1][0].mb_type[mb_xy])){ // AFL/AFR/FR/FL -> AFL/FL |
| 399 |
if(!IS_INTERLACED(*mb_type)){ // AFR/FR -> AFL/FL |
| 400 |
mb_xy= s->mb_x + ((s->mb_y&~1) + h->col_parity)*s->mb_stride;
|
| 401 |
b8_stride = 0;
|
| 402 |
}else{
|
| 403 |
mb_xy += h->col_fieldoff; // non zero for FL -> FL & differ parity
|
| 404 |
} |
| 405 |
goto single_col;
|
| 406 |
}else{ // AFL/AFR/FR/FL -> AFR/FR |
| 407 |
if(IS_INTERLACED(*mb_type)){ // AFL /FL -> AFR/FR |
| 408 |
mb_xy= s->mb_x + (s->mb_y&~1)*s->mb_stride;
|
| 409 |
mb_type_col[0] = h->ref_list[1][0].mb_type[mb_xy]; |
| 410 |
mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy + s->mb_stride]; |
| 411 |
b8_stride *= 3;
|
| 412 |
b4_stride *= 6;
|
| 413 |
|
| 414 |
sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
|
| 415 |
|
| 416 |
if( (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA) |
| 417 |
&& (mb_type_col[1] & MB_TYPE_16x16_OR_INTRA)
|
| 418 |
&& !is_b8x8){
|
| 419 |
*mb_type |= MB_TYPE_16x8 |MB_TYPE_L0L1|MB_TYPE_DIRECT2; /* B_16x8 */
|
| 420 |
}else{
|
| 421 |
*mb_type |= MB_TYPE_8x8|MB_TYPE_L0L1; |
| 422 |
} |
| 423 |
}else{ // AFR/FR -> AFR/FR |
| 424 |
single_col:
|
| 425 |
mb_type_col[0] =
|
| 426 |
mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy]; |
| 427 |
|
| 428 |
sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
|
| 429 |
if(!is_b8x8 && (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)){ |
| 430 |
*mb_type |= MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_16x16 */
|
| 431 |
}else if(!is_b8x8 && (mb_type_col[0] & (MB_TYPE_16x8|MB_TYPE_8x16))){ |
| 432 |
*mb_type |= MB_TYPE_L0L1|MB_TYPE_DIRECT2 | (mb_type_col[0] & (MB_TYPE_16x8|MB_TYPE_8x16));
|
| 433 |
}else{
|
| 434 |
if(!h->sps.direct_8x8_inference_flag){
|
| 435 |
/* FIXME save sub mb types from previous frames (or derive from MVs)
|
| 436 |
* so we know exactly what block size to use */
|
| 437 |
sub_mb_type = MB_TYPE_8x8|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_4x4 */
|
| 438 |
} |
| 439 |
*mb_type |= MB_TYPE_8x8|MB_TYPE_L0L1; |
| 440 |
} |
| 441 |
} |
| 442 |
} |
| 443 |
|
| 444 |
l1mv0 = &h->ref_list[1][0].motion_val[0][h->mb2b_xy [mb_xy]]; |
| 445 |
l1mv1 = &h->ref_list[1][0].motion_val[1][h->mb2b_xy [mb_xy]]; |
| 446 |
l1ref0 = &h->ref_list[1][0].ref_index [0][h->mb2b8_xy[mb_xy]]; |
| 447 |
l1ref1 = &h->ref_list[1][0].ref_index [1][h->mb2b8_xy[mb_xy]]; |
| 448 |
if(!b8_stride){
|
| 449 |
if(s->mb_y&1){ |
| 450 |
l1ref0 += h->b8_stride; |
| 451 |
l1ref1 += h->b8_stride; |
| 452 |
l1mv0 += 2*b4_stride;
|
| 453 |
l1mv1 += 2*b4_stride;
|
| 454 |
} |
| 455 |
} |
| 456 |
|
| 457 |
{
|
| 458 |
const int *map_col_to_list0[2] = {h->map_col_to_list0[0], h->map_col_to_list0[1]}; |
| 459 |
const int *dist_scale_factor = h->dist_scale_factor; |
| 460 |
int ref_offset;
|
| 461 |
|
| 462 |
if(FRAME_MBAFF && IS_INTERLACED(*mb_type)){
|
| 463 |
map_col_to_list0[0] = h->map_col_to_list0_field[s->mb_y&1][0]; |
| 464 |
map_col_to_list0[1] = h->map_col_to_list0_field[s->mb_y&1][1]; |
| 465 |
dist_scale_factor =h->dist_scale_factor_field[s->mb_y&1];
|
| 466 |
} |
| 467 |
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 |
| 468 |
|
| 469 |
if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])){ |
| 470 |
int y_shift = 2*!IS_INTERLACED(*mb_type); |
| 471 |
assert(h->sps.direct_8x8_inference_flag); |
| 472 |
|
| 473 |
for(i8=0; i8<4; i8++){ |
| 474 |
const int x8 = i8&1; |
| 475 |
const int y8 = i8>>1; |
| 476 |
int ref0, scale;
|
| 477 |
const int16_t (*l1mv)[2]= l1mv0; |
| 478 |
|
| 479 |
if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
|
| 480 |
continue;
|
| 481 |
h->sub_mb_type[i8] = sub_mb_type; |
| 482 |
|
| 483 |
fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1); |
| 484 |
if(IS_INTRA(mb_type_col[y8])){
|
| 485 |
fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, 0, 1); |
| 486 |
fill_rectangle(&h-> mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4); |
| 487 |
fill_rectangle(&h-> mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4); |
| 488 |
continue;
|
| 489 |
} |
| 490 |
|
| 491 |
ref0 = l1ref0[x8 + y8*b8_stride]; |
| 492 |
if(ref0 >= 0) |
| 493 |
ref0 = map_col_to_list0[0][ref0 + ref_offset];
|
| 494 |
else{
|
| 495 |
ref0 = map_col_to_list0[1][l1ref1[x8 + y8*b8_stride] + ref_offset];
|
| 496 |
l1mv= l1mv1; |
| 497 |
} |
| 498 |
scale = dist_scale_factor[ref0]; |
| 499 |
fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref0, 1); |
| 500 |
|
| 501 |
{
|
| 502 |
const int16_t *mv_col = l1mv[x8*3 + y8*b4_stride]; |
| 503 |
int my_col = (mv_col[1]<<y_shift)/2; |
| 504 |
int mx = (scale * mv_col[0] + 128) >> 8; |
| 505 |
int my = (scale * my_col + 128) >> 8; |
| 506 |
fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mx,my), 4); |
| 507 |
fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mx-mv_col[0],my-my_col), 4); |
| 508 |
} |
| 509 |
} |
| 510 |
return;
|
| 511 |
} |
| 512 |
|
| 513 |
/* one-to-one mv scaling */
|
| 514 |
|
| 515 |
if(IS_16X16(*mb_type)){
|
| 516 |
int ref, mv0, mv1;
|
| 517 |
|
| 518 |
fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, 0, 1); |
| 519 |
if(IS_INTRA(mb_type_col[0])){ |
| 520 |
ref=mv0=mv1=0;
|
| 521 |
}else{
|
| 522 |
const int ref0 = l1ref0[0] >= 0 ? map_col_to_list0[0][l1ref0[0] + ref_offset] |
| 523 |
: map_col_to_list0[1][l1ref1[0] + ref_offset]; |
| 524 |
const int scale = dist_scale_factor[ref0]; |
| 525 |
const int16_t *mv_col = l1ref0[0] >= 0 ? l1mv0[0] : l1mv1[0]; |
| 526 |
int mv_l0[2]; |
| 527 |
mv_l0[0] = (scale * mv_col[0] + 128) >> 8; |
| 528 |
mv_l0[1] = (scale * mv_col[1] + 128) >> 8; |
| 529 |
ref= ref0; |
| 530 |
mv0= pack16to32(mv_l0[0],mv_l0[1]); |
| 531 |
mv1= pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]); |
| 532 |
} |
| 533 |
fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, ref, 1); |
| 534 |
fill_rectangle(&h-> mv_cache[0][scan8[0]], 4, 4, 8, mv0, 4); |
| 535 |
fill_rectangle(&h-> mv_cache[1][scan8[0]], 4, 4, 8, mv1, 4); |
| 536 |
}else{
|
| 537 |
for(i8=0; i8<4; i8++){ |
| 538 |
const int x8 = i8&1; |
| 539 |
const int y8 = i8>>1; |
| 540 |
int ref0, scale;
|
| 541 |
const int16_t (*l1mv)[2]= l1mv0; |
| 542 |
|
| 543 |
if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
|
| 544 |
continue;
|
| 545 |
h->sub_mb_type[i8] = sub_mb_type; |
| 546 |
fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1); |
| 547 |
if(IS_INTRA(mb_type_col[0])){ |
| 548 |
fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, 0, 1); |
| 549 |
fill_rectangle(&h-> mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4); |
| 550 |
fill_rectangle(&h-> mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4); |
| 551 |
continue;
|
| 552 |
} |
| 553 |
|
| 554 |
ref0 = l1ref0[x8 + y8*b8_stride]; |
| 555 |
if(ref0 >= 0) |
| 556 |
ref0 = map_col_to_list0[0][ref0 + ref_offset];
|
| 557 |
else{
|
| 558 |
ref0 = map_col_to_list0[1][l1ref1[x8 + y8*b8_stride] + ref_offset];
|
| 559 |
l1mv= l1mv1; |
| 560 |
} |
| 561 |
scale = dist_scale_factor[ref0]; |
| 562 |
|
| 563 |
fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref0, 1); |
| 564 |
if(IS_SUB_8X8(sub_mb_type)){
|
| 565 |
const int16_t *mv_col = l1mv[x8*3 + y8*3*b4_stride]; |
| 566 |
int mx = (scale * mv_col[0] + 128) >> 8; |
| 567 |
int my = (scale * mv_col[1] + 128) >> 8; |
| 568 |
fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mx,my), 4); |
| 569 |
fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mx-mv_col[0],my-mv_col[1]), 4); |
| 570 |
}else
|
| 571 |
for(i4=0; i4<4; i4++){ |
| 572 |
const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*b4_stride]; |
| 573 |
int16_t *mv_l0 = h->mv_cache[0][scan8[i8*4+i4]]; |
| 574 |
mv_l0[0] = (scale * mv_col[0] + 128) >> 8; |
| 575 |
mv_l0[1] = (scale * mv_col[1] + 128) >> 8; |
| 576 |
*(uint32_t*)h->mv_cache[1][scan8[i8*4+i4]] = |
| 577 |
pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]); |
| 578 |
} |
| 579 |
} |
| 580 |
} |
| 581 |
} |
| 582 |
} |
| 583 |
|
| 584 |
void ff_h264_pred_direct_motion(H264Context * const h, int *mb_type){ |
| 585 |
if(h->direct_spatial_mv_pred){
|
| 586 |
pred_spatial_direct_motion(h, mb_type); |
| 587 |
}else{
|
| 588 |
pred_temp_direct_motion(h, mb_type); |
| 589 |
} |
| 590 |
} |