2 * H.26L/H.264/AVC/JVT/14496-10/... direct mb/block decoding
3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 * H.264 / AVC / MPEG4 part10 direct mb/block decoding.
25 * @author Michael Niedermayer <michaelni@gmx.at>
30 #include "mpegvideo.h"
32 #include "rectangle.h"
39 static int get_scale_factor(H264Context * const h, int poc, int poc1, int i){
40 int poc0 = h->ref_list[0][i].poc;
41 int td = av_clip(poc1 - poc0, -128, 127);
42 if(td == 0 || h->ref_list[0][i].long_ref){
45 int tb = av_clip(poc - poc0, -128, 127);
46 int tx = (16384 + (FFABS(td) >> 1)) / td;
47 return av_clip((tb*tx + 32) >> 6, -1024, 1023);
51 void ff_h264_direct_dist_scale_factor(H264Context * const h){
52 const int poc = h->cur_pic_ptr->field_poc[h->picture_structure == PICT_BOTTOM_FIELD];
53 const int poc1 = h->ref_list[1][0].poc;
57 for (field = 0; field < 2; field++){
58 const int poc = h->cur_pic_ptr->field_poc[field];
59 const int poc1 = h->ref_list[1][0].field_poc[field];
60 for (i = 0; i < 2 * h->ref_count[0]; i++)
61 h->dist_scale_factor_field[field][i^field] =
62 get_scale_factor(h, poc, poc1, i+16);
65 for (i = 0; i < h->ref_count[0]; i++){
66 h->dist_scale_factor[i] = get_scale_factor(h, poc, poc1, i);
70 static void fill_colmap(H264Context *h, int map[2][16+32], int list, int field, int colfield, int mbafi){
71 Picture * const ref1 = &h->ref_list[1][0];
72 int j, old_ref, rfield;
73 int start= mbafi ? 16 : 0;
74 int end = mbafi ? 16+2*h->ref_count[0] : h->ref_count[0];
75 int interl= mbafi || h->picture_structure != PICT_FRAME;
77 /* bogus; fills in for missing frames */
78 memset(map[list], 0, sizeof(map[list]));
80 for(rfield=0; rfield<2; rfield++){
81 for(old_ref=0; old_ref<ref1->ref_count[colfield][list]; old_ref++){
82 int poc = ref1->ref_poc[colfield][list][old_ref];
86 else if( interl && (poc&3) == 3) // FIXME: store all MBAFF references so this is not needed
87 poc= (poc&~3) + rfield + 1;
89 for(j=start; j<end; j++){
90 if (4 * h->ref_list[0][j].frame_num + (h->ref_list[0][j].reference & 3) == poc) {
91 int cur_ref= mbafi ? (j-16)^field : j;
93 map[list][2 * old_ref + (rfield^field) + 16] = cur_ref;
94 if(rfield == field || !interl)
95 map[list][old_ref] = cur_ref;
103 void ff_h264_direct_ref_list_init(H264Context * const h){
104 Picture * const ref1 = &h->ref_list[1][0];
105 Picture * const cur = h->cur_pic_ptr;
107 int sidx= (h->picture_structure&1)^1;
108 int ref1sidx = (ref1->reference&1)^1;
110 for(list=0; list<2; list++){
111 cur->ref_count[sidx][list] = h->ref_count[list];
112 for(j=0; j<h->ref_count[list]; j++)
113 cur->ref_poc[sidx][list][j] = 4 * h->ref_list[list][j].frame_num + (h->ref_list[list][j].reference & 3);
116 if(h->picture_structure == PICT_FRAME){
117 memcpy(cur->ref_count[1], cur->ref_count[0], sizeof(cur->ref_count[0]));
118 memcpy(cur->ref_poc [1], cur->ref_poc [0], sizeof(cur->ref_poc [0]));
121 cur->mbaff = FRAME_MBAFF(h);
124 if(h->picture_structure == PICT_FRAME){
125 int cur_poc = h->cur_pic_ptr->poc;
126 int *col_poc = h->ref_list[1]->field_poc;
127 h->col_parity= (FFABS(col_poc[0] - cur_poc) >= FFABS(col_poc[1] - cur_poc));
128 ref1sidx=sidx= h->col_parity;
129 } else if (!(h->picture_structure & h->ref_list[1][0].reference) && !h->ref_list[1][0].mbaff) { // FL -> FL & differ parity
130 h->col_fieldoff = 2 * h->ref_list[1][0].reference - 3;
133 if (h->slice_type_nos != AV_PICTURE_TYPE_B || h->direct_spatial_mv_pred)
136 for(list=0; list<2; list++){
137 fill_colmap(h, h->map_col_to_list0, list, sidx, ref1sidx, 0);
139 for(field=0; field<2; field++)
140 fill_colmap(h, h->map_col_to_list0_field[field], list, field, field, 1);
144 static void await_reference_mb_row(H264Context * const h, Picture *ref, int mb_y)
146 int ref_field = ref->reference - 1;
147 int ref_field_picture = ref->field_picture;
148 int ref_height = 16*h->mb_height >> ref_field_picture;
150 if(!HAVE_THREADS || !(h->avctx->active_thread_type&FF_THREAD_FRAME))
153 //FIXME it can be safe to access mb stuff
154 //even if pixels aren't deblocked yet
156 ff_thread_await_progress(&ref->tf,
157 FFMIN(16 * mb_y >> ref_field_picture, ref_height - 1),
158 ref_field_picture && ref_field);
161 static void pred_spatial_direct_motion(H264Context * const h, int *mb_type){
163 int b4_stride = h->b_stride;
164 int mb_xy = h->mb_xy, mb_y = h->mb_y;
166 const int16_t (*l1mv0)[2], (*l1mv1)[2];
167 const int8_t *l1ref0, *l1ref1;
168 const int is_b8x8 = IS_8X8(*mb_type);
169 unsigned int sub_mb_type= MB_TYPE_L0L1;
175 assert(h->ref_list[1][0].reference & 3);
177 await_reference_mb_row(h, &h->ref_list[1][0], h->mb_y + !!IS_INTERLACED(*mb_type));
179 #define MB_TYPE_16x16_OR_INTRA (MB_TYPE_16x16|MB_TYPE_INTRA4x4|MB_TYPE_INTRA16x16|MB_TYPE_INTRA_PCM)
182 /* ref = min(neighbors) */
183 for(list=0; list<2; list++){
184 int left_ref = h->ref_cache[list][scan8[0] - 1];
185 int top_ref = h->ref_cache[list][scan8[0] - 8];
186 int refc = h->ref_cache[list][scan8[0] - 8 + 4];
187 const int16_t *C= h->mv_cache[list][ scan8[0] - 8 + 4];
188 if(refc == PART_NOT_AVAILABLE){
189 refc = h->ref_cache[list][scan8[0] - 8 - 1];
190 C = h-> mv_cache[list][scan8[0] - 8 - 1];
192 ref[list] = FFMIN3((unsigned)left_ref, (unsigned)top_ref, (unsigned)refc);
194 //this is just pred_motion() but with the cases removed that cannot happen for direct blocks
195 const int16_t * const A= h->mv_cache[list][ scan8[0] - 1 ];
196 const int16_t * const B= h->mv_cache[list][ scan8[0] - 8 ];
198 int match_count= (left_ref==ref[list]) + (top_ref==ref[list]) + (refc==ref[list]);
199 if(match_count > 1){ //most common
200 mv[list]= pack16to32(mid_pred(A[0], B[0], C[0]),
201 mid_pred(A[1], B[1], C[1]) );
203 assert(match_count==1);
204 if(left_ref==ref[list]){
205 mv[list]= AV_RN32A(A);
206 }else if(top_ref==ref[list]){
207 mv[list]= AV_RN32A(B);
209 mv[list]= AV_RN32A(C);
213 int mask= ~(MB_TYPE_L0 << (2*list));
221 if(ref[0] < 0 && ref[1] < 0){
224 *mb_type |= MB_TYPE_L0L1;
225 sub_mb_type |= MB_TYPE_L0L1;
228 if(!(is_b8x8|mv[0]|mv[1])){
229 fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1);
230 fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1);
231 fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, 0, 4);
232 fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, 0, 4);
233 *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;
237 if (IS_INTERLACED(h->ref_list[1][0].mb_type[mb_xy])) { // AFL/AFR/FR/FL -> AFL/FL
238 if (!IS_INTERLACED(*mb_type)) { // AFR/FR -> AFL/FL
239 mb_y = (h->mb_y&~1) + h->col_parity;
240 mb_xy= h->mb_x + ((h->mb_y&~1) + h->col_parity)*h->mb_stride;
243 mb_y += h->col_fieldoff;
244 mb_xy += h->mb_stride*h->col_fieldoff; // non zero for FL -> FL & differ parity
247 }else{ // AFL/AFR/FR/FL -> AFR/FR
248 if(IS_INTERLACED(*mb_type)){ // AFL /FL -> AFR/FR
250 mb_xy= h->mb_x + (h->mb_y&~1)*h->mb_stride;
251 mb_type_col[0] = h->ref_list[1][0].mb_type[mb_xy];
252 mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy + h->mb_stride];
253 b8_stride = 2+4*h->mb_stride;
255 if (IS_INTERLACED(mb_type_col[0]) != IS_INTERLACED(mb_type_col[1])) {
256 mb_type_col[0] &= ~MB_TYPE_INTERLACED;
257 mb_type_col[1] &= ~MB_TYPE_INTERLACED;
260 sub_mb_type |= MB_TYPE_16x16|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
261 if( (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)
262 && (mb_type_col[1] & MB_TYPE_16x16_OR_INTRA)
264 *mb_type |= MB_TYPE_16x8 |MB_TYPE_DIRECT2; /* B_16x8 */
266 *mb_type |= MB_TYPE_8x8;
268 }else{ // AFR/FR -> AFR/FR
271 mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy];
273 sub_mb_type |= MB_TYPE_16x16|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
274 if(!is_b8x8 && (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)){
275 *mb_type |= MB_TYPE_16x16|MB_TYPE_DIRECT2; /* B_16x16 */
276 }else if(!is_b8x8 && (mb_type_col[0] & (MB_TYPE_16x8|MB_TYPE_8x16))){
277 *mb_type |= MB_TYPE_DIRECT2 | (mb_type_col[0] & (MB_TYPE_16x8|MB_TYPE_8x16));
279 if(!h->sps.direct_8x8_inference_flag){
280 /* FIXME save sub mb types from previous frames (or derive from MVs)
281 * so we know exactly what block size to use */
282 sub_mb_type += (MB_TYPE_8x8-MB_TYPE_16x16); /* B_SUB_4x4 */
284 *mb_type |= MB_TYPE_8x8;
289 await_reference_mb_row(h, &h->ref_list[1][0], mb_y);
291 l1mv0 = (void*)&h->ref_list[1][0].motion_val[0][h->mb2b_xy [mb_xy]];
292 l1mv1 = (void*)&h->ref_list[1][0].motion_val[1][h->mb2b_xy [mb_xy]];
293 l1ref0 = &h->ref_list[1][0].ref_index [0][4 * mb_xy];
294 l1ref1 = &h->ref_list[1][0].ref_index [1][4 * mb_xy];
299 l1mv0 += 2*b4_stride;
300 l1mv1 += 2*b4_stride;
305 if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])){
307 for(i8=0; i8<4; i8++){
310 int xy8 = x8+y8*b8_stride;
311 int xy4 = 3*x8+y8*b4_stride;
314 if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
316 h->sub_mb_type[i8] = sub_mb_type;
318 fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1);
319 fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1);
320 if(!IS_INTRA(mb_type_col[y8]) && !h->ref_list[1][0].long_ref
321 && ( (l1ref0[xy8] == 0 && FFABS(l1mv0[xy4][0]) <= 1 && FFABS(l1mv0[xy4][1]) <= 1)
322 || (l1ref0[xy8] < 0 && l1ref1[xy8] == 0 && FFABS(l1mv1[xy4][0]) <= 1 && FFABS(l1mv1[xy4][1]) <= 1))){
333 fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, a, 4);
334 fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, b, 4);
336 if(!is_b8x8 && !(n&3))
337 *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;
338 }else if(IS_16X16(*mb_type)){
341 fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1);
342 fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1);
343 if(!IS_INTRA(mb_type_col[0]) && !h->ref_list[1][0].long_ref
344 && ( (l1ref0[0] == 0 && FFABS(l1mv0[0][0]) <= 1 && FFABS(l1mv0[0][1]) <= 1)
345 || (l1ref0[0] < 0 && l1ref1[0] == 0 && FFABS(l1mv1[0][0]) <= 1 && FFABS(l1mv1[0][1]) <= 1
346 && h->x264_build>33U))){
356 fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, a, 4);
357 fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, b, 4);
360 for(i8=0; i8<4; i8++){
362 const int y8 = i8>>1;
364 if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
366 h->sub_mb_type[i8] = sub_mb_type;
368 fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, mv[0], 4);
369 fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, mv[1], 4);
370 fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1);
371 fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1);
373 assert(b8_stride==2);
375 if(!IS_INTRA(mb_type_col[0]) && !h->ref_list[1][0].long_ref && ( l1ref0[i8] == 0
376 || (l1ref0[i8] < 0 && l1ref1[i8] == 0
377 && h->x264_build>33U))){
378 const int16_t (*l1mv)[2]= l1ref0[i8] == 0 ? l1mv0 : l1mv1;
379 if(IS_SUB_8X8(sub_mb_type)){
380 const int16_t *mv_col = l1mv[x8*3 + y8*3*b4_stride];
381 if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){
383 fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
385 fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
390 for(i4=0; i4<4; i4++){
391 const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*b4_stride];
392 if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){
394 AV_ZERO32(h->mv_cache[0][scan8[i8*4+i4]]);
396 AV_ZERO32(h->mv_cache[1][scan8[i8*4+i4]]);
401 h->sub_mb_type[i8]+= MB_TYPE_16x16 - MB_TYPE_8x8;
406 if(!is_b8x8 && !(n&15))
407 *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;
411 static void pred_temp_direct_motion(H264Context * const h, int *mb_type){
413 int b4_stride = h->b_stride;
414 int mb_xy = h->mb_xy, mb_y = h->mb_y;
416 const int16_t (*l1mv0)[2], (*l1mv1)[2];
417 const int8_t *l1ref0, *l1ref1;
418 const int is_b8x8 = IS_8X8(*mb_type);
419 unsigned int sub_mb_type;
422 assert(h->ref_list[1][0].reference & 3);
424 await_reference_mb_row(h, &h->ref_list[1][0], h->mb_y + !!IS_INTERLACED(*mb_type));
426 if (IS_INTERLACED(h->ref_list[1][0].mb_type[mb_xy])) { // AFL/AFR/FR/FL -> AFL/FL
427 if (!IS_INTERLACED(*mb_type)) { // AFR/FR -> AFL/FL
428 mb_y = (h->mb_y&~1) + h->col_parity;
429 mb_xy= h->mb_x + ((h->mb_y&~1) + h->col_parity)*h->mb_stride;
432 mb_y += h->col_fieldoff;
433 mb_xy += h->mb_stride*h->col_fieldoff; // non zero for FL -> FL & differ parity
436 }else{ // AFL/AFR/FR/FL -> AFR/FR
437 if(IS_INTERLACED(*mb_type)){ // AFL /FL -> AFR/FR
439 mb_xy= h->mb_x + (h->mb_y&~1)*h->mb_stride;
440 mb_type_col[0] = h->ref_list[1][0].mb_type[mb_xy];
441 mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy + h->mb_stride];
442 b8_stride = 2+4*h->mb_stride;
444 if (IS_INTERLACED(mb_type_col[0]) != IS_INTERLACED(mb_type_col[1])) {
445 mb_type_col[0] &= ~MB_TYPE_INTERLACED;
446 mb_type_col[1] &= ~MB_TYPE_INTERLACED;
449 sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
451 if( (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)
452 && (mb_type_col[1] & MB_TYPE_16x16_OR_INTRA)
454 *mb_type |= MB_TYPE_16x8 |MB_TYPE_L0L1|MB_TYPE_DIRECT2; /* B_16x8 */
456 *mb_type |= MB_TYPE_8x8|MB_TYPE_L0L1;
458 }else{ // AFR/FR -> AFR/FR
461 mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy];
463 sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
464 if(!is_b8x8 && (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)){
465 *mb_type |= MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_16x16 */
466 }else if(!is_b8x8 && (mb_type_col[0] & (MB_TYPE_16x8|MB_TYPE_8x16))){
467 *mb_type |= MB_TYPE_L0L1|MB_TYPE_DIRECT2 | (mb_type_col[0] & (MB_TYPE_16x8|MB_TYPE_8x16));
469 if(!h->sps.direct_8x8_inference_flag){
470 /* FIXME save sub mb types from previous frames (or derive from MVs)
471 * so we know exactly what block size to use */
472 sub_mb_type = MB_TYPE_8x8|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_4x4 */
474 *mb_type |= MB_TYPE_8x8|MB_TYPE_L0L1;
479 await_reference_mb_row(h, &h->ref_list[1][0], mb_y);
481 l1mv0 = (void*)&h->ref_list[1][0].motion_val[0][h->mb2b_xy [mb_xy]];
482 l1mv1 = (void*)&h->ref_list[1][0].motion_val[1][h->mb2b_xy [mb_xy]];
483 l1ref0 = &h->ref_list[1][0].ref_index [0][4 * mb_xy];
484 l1ref1 = &h->ref_list[1][0].ref_index [1][4 * mb_xy];
489 l1mv0 += 2*b4_stride;
490 l1mv1 += 2*b4_stride;
495 const int *map_col_to_list0[2] = {h->map_col_to_list0[0], h->map_col_to_list0[1]};
496 const int *dist_scale_factor = h->dist_scale_factor;
499 if (FRAME_MBAFF(h) && IS_INTERLACED(*mb_type)) {
500 map_col_to_list0[0] = h->map_col_to_list0_field[h->mb_y&1][0];
501 map_col_to_list0[1] = h->map_col_to_list0_field[h->mb_y&1][1];
502 dist_scale_factor =h->dist_scale_factor_field[h->mb_y&1];
504 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
506 if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])){
507 int y_shift = 2*!IS_INTERLACED(*mb_type);
508 assert(h->sps.direct_8x8_inference_flag);
510 for(i8=0; i8<4; i8++){
512 const int y8 = i8>>1;
514 const int16_t (*l1mv)[2]= l1mv0;
516 if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
518 h->sub_mb_type[i8] = sub_mb_type;
520 fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1);
521 if(IS_INTRA(mb_type_col[y8])){
522 fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, 0, 1);
523 fill_rectangle(&h-> mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
524 fill_rectangle(&h-> mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
528 ref0 = l1ref0[x8 + y8*b8_stride];
530 ref0 = map_col_to_list0[0][ref0 + ref_offset];
532 ref0 = map_col_to_list0[1][l1ref1[x8 + y8*b8_stride] + ref_offset];
535 scale = dist_scale_factor[ref0];
536 fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref0, 1);
539 const int16_t *mv_col = l1mv[x8*3 + y8*b4_stride];
540 int my_col = (mv_col[1]<<y_shift)/2;
541 int mx = (scale * mv_col[0] + 128) >> 8;
542 int my = (scale * my_col + 128) >> 8;
543 fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mx,my), 4);
544 fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mx-mv_col[0],my-my_col), 4);
550 /* one-to-one mv scaling */
552 if(IS_16X16(*mb_type)){
555 fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, 0, 1);
556 if(IS_INTRA(mb_type_col[0])){
559 const int ref0 = l1ref0[0] >= 0 ? map_col_to_list0[0][l1ref0[0] + ref_offset]
560 : map_col_to_list0[1][l1ref1[0] + ref_offset];
561 const int scale = dist_scale_factor[ref0];
562 const int16_t *mv_col = l1ref0[0] >= 0 ? l1mv0[0] : l1mv1[0];
564 mv_l0[0] = (scale * mv_col[0] + 128) >> 8;
565 mv_l0[1] = (scale * mv_col[1] + 128) >> 8;
567 mv0= pack16to32(mv_l0[0],mv_l0[1]);
568 mv1= pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]);
570 fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, ref, 1);
571 fill_rectangle(&h-> mv_cache[0][scan8[0]], 4, 4, 8, mv0, 4);
572 fill_rectangle(&h-> mv_cache[1][scan8[0]], 4, 4, 8, mv1, 4);
574 for(i8=0; i8<4; i8++){
576 const int y8 = i8>>1;
578 const int16_t (*l1mv)[2]= l1mv0;
580 if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
582 h->sub_mb_type[i8] = sub_mb_type;
583 fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1);
584 if(IS_INTRA(mb_type_col[0])){
585 fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, 0, 1);
586 fill_rectangle(&h-> mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
587 fill_rectangle(&h-> mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
591 assert(b8_stride == 2);
594 ref0 = map_col_to_list0[0][ref0 + ref_offset];
596 ref0 = map_col_to_list0[1][l1ref1[i8] + ref_offset];
599 scale = dist_scale_factor[ref0];
601 fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref0, 1);
602 if(IS_SUB_8X8(sub_mb_type)){
603 const int16_t *mv_col = l1mv[x8*3 + y8*3*b4_stride];
604 int mx = (scale * mv_col[0] + 128) >> 8;
605 int my = (scale * mv_col[1] + 128) >> 8;
606 fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mx,my), 4);
607 fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mx-mv_col[0],my-mv_col[1]), 4);
609 for(i4=0; i4<4; i4++){
610 const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*b4_stride];
611 int16_t *mv_l0 = h->mv_cache[0][scan8[i8*4+i4]];
612 mv_l0[0] = (scale * mv_col[0] + 128) >> 8;
613 mv_l0[1] = (scale * mv_col[1] + 128) >> 8;
614 AV_WN32A(h->mv_cache[1][scan8[i8*4+i4]],
615 pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]));
622 void ff_h264_pred_direct_motion(H264Context * const h, int *mb_type){
623 if(h->direct_spatial_mv_pred){
624 pred_spatial_direct_motion(h, mb_type);
626 pred_temp_direct_motion(h, mb_type);