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- /*
- * 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 libavcodec/h264_direct.c
- * 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"
- //#undef NDEBUG
- #include <assert.h>
- static int get_scale_factor(H264Context * const h, int poc, int poc1, int i){
- int poc0 = h->ref_list[0][i].poc;
- int td = av_clip(poc1 - poc0, -128, 127);
- if(td == 0 || h->ref_list[0][i].long_ref){
- return 256;
- }else{
- int tb = av_clip(poc - poc0, -128, 127);
- int tx = (16384 + (FFABS(td) >> 1)) / td;
- return av_clip((tb*tx + 32) >> 6, -1024, 1023);
- }
- }
- void ff_h264_direct_dist_scale_factor(H264Context * const h){
- MpegEncContext * const s = &h->s;
- const int poc = h->s.current_picture_ptr->field_poc[ s->picture_structure == PICT_BOTTOM_FIELD ];
- const int poc1 = h->ref_list[1][0].poc;
- int i, field;
- for(field=0; field<2; field++){
- const int poc = h->s.current_picture_ptr->field_poc[field];
- const int poc1 = h->ref_list[1][0].field_poc[field];
- for(i=0; i < 2*h->ref_count[0]; i++)
- h->dist_scale_factor_field[field][i^field] = get_scale_factor(h, poc, poc1, i+16);
- }
- for(i=0; i<h->ref_count[0]; i++){
- h->dist_scale_factor[i] = get_scale_factor(h, poc, poc1, i);
- }
- }
- static void fill_colmap(H264Context *h, int map[2][16+32], int list, int field, int colfield, int mbafi){
- MpegEncContext * const s = &h->s;
- Picture * const ref1 = &h->ref_list[1][0];
- int j, old_ref, rfield;
- int start= mbafi ? 16 : 0;
- int end = mbafi ? 16+2*h->ref_count[0] : h->ref_count[0];
- int interl= mbafi || s->picture_structure != PICT_FRAME;
- /* bogus; fills in for missing frames */
- memset(map[list], 0, sizeof(map[list]));
- for(rfield=0; rfield<2; rfield++){
- for(old_ref=0; old_ref<ref1->ref_count[colfield][list]; old_ref++){
- int poc = ref1->ref_poc[colfield][list][old_ref];
- if (!interl)
- poc |= 3;
- else if( interl && (poc&3) == 3) //FIXME store all MBAFF references so this isnt needed
- poc= (poc&~3) + rfield + 1;
- for(j=start; j<end; j++){
- if(4*h->ref_list[0][j].frame_num + (h->ref_list[0][j].reference&3) == poc){
- int cur_ref= mbafi ? (j-16)^field : j;
- map[list][2*old_ref + (rfield^field) + 16] = cur_ref;
- if(rfield == field || !interl)
- map[list][old_ref] = cur_ref;
- break;
- }
- }
- }
- }
- }
- void ff_h264_direct_ref_list_init(H264Context * const h){
- MpegEncContext * const s = &h->s;
- Picture * const ref1 = &h->ref_list[1][0];
- Picture * const cur = s->current_picture_ptr;
- int list, j, field;
- int sidx= (s->picture_structure&1)^1;
- int ref1sidx= (ref1->reference&1)^1;
- for(list=0; list<2; list++){
- cur->ref_count[sidx][list] = h->ref_count[list];
- for(j=0; j<h->ref_count[list]; j++)
- cur->ref_poc[sidx][list][j] = 4*h->ref_list[list][j].frame_num + (h->ref_list[list][j].reference&3);
- }
- if(s->picture_structure == PICT_FRAME){
- memcpy(cur->ref_count[1], cur->ref_count[0], sizeof(cur->ref_count[0]));
- memcpy(cur->ref_poc [1], cur->ref_poc [0], sizeof(cur->ref_poc [0]));
- }
- cur->mbaff= FRAME_MBAFF;
- h->col_fieldoff= 0;
- if(s->picture_structure == PICT_FRAME){
- int cur_poc = s->current_picture_ptr->poc;
- int *col_poc = h->ref_list[1]->field_poc;
- h->col_parity= (FFABS(col_poc[0] - cur_poc) >= FFABS(col_poc[1] - cur_poc));
- ref1sidx=sidx= h->col_parity;
- }else if(!(s->picture_structure & h->ref_list[1][0].reference) && !h->ref_list[1][0].mbaff){ // FL -> FL & differ parity
- h->col_fieldoff= s->mb_stride*(2*(h->ref_list[1][0].reference) - 3);
- }
- if(cur->pict_type != FF_B_TYPE || h->direct_spatial_mv_pred)
- return;
- for(list=0; list<2; list++){
- fill_colmap(h, h->map_col_to_list0, list, sidx, ref1sidx, 0);
- if(FRAME_MBAFF)
- for(field=0; field<2; field++)
- fill_colmap(h, h->map_col_to_list0_field[field], list, field, field, 1);
- }
- }
- static void pred_spatial_direct_motion(H264Context * const h, int *mb_type){
- MpegEncContext * const s = &h->s;
- int b8_stride = h->b8_stride;
- int b4_stride = h->b_stride;
- int mb_xy = h->mb_xy;
- int mb_type_col[2];
- const int16_t (*l1mv0)[2], (*l1mv1)[2];
- const int8_t *l1ref0, *l1ref1;
- const int is_b8x8 = IS_8X8(*mb_type);
- unsigned int sub_mb_type= MB_TYPE_L0L1;;
- int i8, i4;
- int ref[2];
- int mv[2];
- int list;
- assert(h->ref_list[1][0].reference&3);
- #define MB_TYPE_16x16_OR_INTRA (MB_TYPE_16x16|MB_TYPE_INTRA4x4|MB_TYPE_INTRA16x16|MB_TYPE_INTRA_PCM)
- *mb_type |= MB_TYPE_L0L1;
- /* 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]= (mid_pred(A[0], B[0], C[0])&0xFFFF)
- +(mid_pred(A[1], B[1], C[1])<<16);
- }else {
- assert(match_count==1);
- if(left_ref==ref[list]){
- mv[list]= *(uint32_t*)A;
- }else if(top_ref==ref[list]){
- mv[list]= *(uint32_t*)B;
- }else{
- mv[list]= *(uint32_t*)C;
- }
- }
- }else{
- int mask= ~(MB_TYPE_L0 << (2*list));
- mv[list] = 0;
- ref[list] = -1;
- if(!is_b8x8)
- *mb_type &= mask;
- sub_mb_type &= mask;
- }
- }
- if(ref[0] < 0 && ref[1] < 0){
- ref[0] = ref[1] = 0;
- if(!is_b8x8)
- *mb_type |= MB_TYPE_L0L1;
- sub_mb_type |= MB_TYPE_L0L1;
- }
- if(!(is_b8x8|mv[0]|mv[1])){
- fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1);
- fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1);
- fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, 0, 4);
- fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, 0, 4);
- *mb_type= (*mb_type & ~(MB_TYPE_8x8|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_P1L0|MB_TYPE_P1L1))|MB_TYPE_16x16|MB_TYPE_DIRECT2;
- return;
- }
- if(IS_INTERLACED(h->ref_list[1][0].mb_type[mb_xy])){ // AFL/AFR/FR/FL -> AFL/FL
- if(!IS_INTERLACED(*mb_type)){ // AFR/FR -> AFL/FL
- mb_xy= s->mb_x + ((s->mb_y&~1) + h->col_parity)*s->mb_stride;
- b8_stride = 0;
- }else{
- mb_xy += 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_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 *= 3;
- b4_stride *= 6;
- sub_mb_type |= MB_TYPE_16x16|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
- if( (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)
- && (mb_type_col[1] & MB_TYPE_16x16_OR_INTRA)
- && !is_b8x8){
- *mb_type |= MB_TYPE_16x8 |MB_TYPE_DIRECT2; /* B_16x8 */
- }else{
- *mb_type |= MB_TYPE_8x8;
- }
- }else{ // AFR/FR -> AFR/FR
- single_col:
- mb_type_col[0] =
- mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy];
- sub_mb_type |= MB_TYPE_16x16|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
- if(!is_b8x8 && (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)){
- *mb_type |= MB_TYPE_16x16|MB_TYPE_DIRECT2; /* B_16x16 */
- }else if(!is_b8x8 && (mb_type_col[0] & (MB_TYPE_16x8|MB_TYPE_8x16))){
- *mb_type |= MB_TYPE_DIRECT2 | (mb_type_col[0] & (MB_TYPE_16x8|MB_TYPE_8x16));
- }else{
- if(!h->sps.direct_8x8_inference_flag){
- /* FIXME save sub mb types from previous frames (or derive from MVs)
- * so we know exactly what block size to use */
- sub_mb_type += (MB_TYPE_8x8-MB_TYPE_16x16); /* B_SUB_4x4 */
- }
- *mb_type |= MB_TYPE_8x8;
- }
- }
- }
- 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][h->mb2b8_xy[mb_xy]];
- l1ref1 = &h->ref_list[1][0].ref_index [1][h->mb2b8_xy[mb_xy]];
- if(!b8_stride){
- if(s->mb_y&1){
- l1ref0 += h->b8_stride;
- l1ref1 += h->b8_stride;
- 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);
- /* col_zero_flag */
- if(!IS_INTRA(mb_type_col[0]) && !h->ref_list[1][0].long_ref && ( l1ref0[x8 + y8*b8_stride] == 0
- || (l1ref0[x8 + y8*b8_stride] < 0 && l1ref1[x8 + y8*b8_stride] == 0
- && h->x264_build>33U))){
- const int16_t (*l1mv)[2]= l1ref0[x8 + y8*b8_stride] == 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)
- *(uint32_t*)h->mv_cache[0][scan8[i8*4+i4]] = 0;
- if(ref[1] == 0)
- *(uint32_t*)h->mv_cache[1][scan8[i8*4+i4]] = 0;
- 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 = h->b8_stride;
- int b4_stride = h->b_stride;
- int mb_xy = h->mb_xy;
- int mb_type_col[2];
- const int16_t (*l1mv0)[2], (*l1mv1)[2];
- const int8_t *l1ref0, *l1ref1;
- const int is_b8x8 = IS_8X8(*mb_type);
- unsigned int sub_mb_type;
- int i8, i4;
- assert(h->ref_list[1][0].reference&3);
- if(IS_INTERLACED(h->ref_list[1][0].mb_type[mb_xy])){ // AFL/AFR/FR/FL -> AFL/FL
- if(!IS_INTERLACED(*mb_type)){ // AFR/FR -> AFL/FL
- mb_xy= s->mb_x + ((s->mb_y&~1) + h->col_parity)*s->mb_stride;
- b8_stride = 0;
- }else{
- mb_xy += 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_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 *= 3;
- 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][h->mb2b8_xy[mb_xy]];
- l1ref1 = &h->ref_list[1][0].ref_index [1][h->mb2b8_xy[mb_xy]];
- if(!b8_stride){
- if(s->mb_y&1){
- l1ref0 += h->b8_stride;
- l1ref1 += h->b8_stride;
- 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;
- }
- 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);
- 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;
- *(uint32_t*)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);
- }
- }
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