100l Forgoten hunk.unbreak compile before someone notices.
[libav.git] / libavcodec / h264_direct.c
CommitLineData
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1/*
2 * H.26L/H.264/AVC/JVT/14496-10/... direct mb/block decoding
3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
4 *
5 * This file is part of FFmpeg.
6 *
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.
11 *
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.
16 *
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
20 */
21
22/**
23 * @file libavcodec/h264_direct.c
24 * H.264 / AVC / MPEG4 part10 direct mb/block decoding.
25 * @author Michael Niedermayer <michaelni@gmx.at>
26 */
27
28#include "internal.h"
29#include "dsputil.h"
30#include "avcodec.h"
31#include "mpegvideo.h"
32#include "h264.h"
33#include "rectangle.h"
34
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35//#undef NDEBUG
36#include <assert.h>
37
38
39static 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){
43 return 256;
44 }else{
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);
48 }
49}
50
51void ff_h264_direct_dist_scale_factor(H264Context * const h){
52 MpegEncContext * const s = &h->s;
53 const int poc = h->s.current_picture_ptr->field_poc[ s->picture_structure == PICT_BOTTOM_FIELD ];
54 const int poc1 = h->ref_list[1][0].poc;
55 int i, field;
56 for(field=0; field<2; field++){
57 const int poc = h->s.current_picture_ptr->field_poc[field];
58 const int poc1 = h->ref_list[1][0].field_poc[field];
59 for(i=0; i < 2*h->ref_count[0]; i++)
60 h->dist_scale_factor_field[field][i^field] = get_scale_factor(h, poc, poc1, i+16);
61 }
62
63 for(i=0; i<h->ref_count[0]; i++){
64 h->dist_scale_factor[i] = get_scale_factor(h, poc, poc1, i);
65 }
66}
67
68static void fill_colmap(H264Context *h, int map[2][16+32], int list, int field, int colfield, int mbafi){
69 MpegEncContext * const s = &h->s;
70 Picture * const ref1 = &h->ref_list[1][0];
71 int j, old_ref, rfield;
72 int start= mbafi ? 16 : 0;
488dba70 73 int end = mbafi ? 16+2*h->ref_count[0] : h->ref_count[0];
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74 int interl= mbafi || s->picture_structure != PICT_FRAME;
75
76 /* bogus; fills in for missing frames */
77 memset(map[list], 0, sizeof(map[list]));
78
79 for(rfield=0; rfield<2; rfield++){
80 for(old_ref=0; old_ref<ref1->ref_count[colfield][list]; old_ref++){
81 int poc = ref1->ref_poc[colfield][list][old_ref];
82
83 if (!interl)
84 poc |= 3;
85 else if( interl && (poc&3) == 3) //FIXME store all MBAFF references so this isnt needed
86 poc= (poc&~3) + rfield + 1;
87
88 for(j=start; j<end; j++){
488dba70 89 if(4*h->ref_list[0][j].frame_num + (h->ref_list[0][j].reference&3) == poc){
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90 int cur_ref= mbafi ? (j-16)^field : j;
91 map[list][2*old_ref + (rfield^field) + 16] = cur_ref;
488dba70 92 if(rfield == field || !interl)
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93 map[list][old_ref] = cur_ref;
94 break;
95 }
96 }
97 }
98 }
99}
100
101void ff_h264_direct_ref_list_init(H264Context * const h){
102 MpegEncContext * const s = &h->s;
103 Picture * const ref1 = &h->ref_list[1][0];
104 Picture * const cur = s->current_picture_ptr;
105 int list, j, field;
106 int sidx= (s->picture_structure&1)^1;
107 int ref1sidx= (ref1->reference&1)^1;
108
109 for(list=0; list<2; list++){
110 cur->ref_count[sidx][list] = h->ref_count[list];
111 for(j=0; j<h->ref_count[list]; j++)
112 cur->ref_poc[sidx][list][j] = 4*h->ref_list[list][j].frame_num + (h->ref_list[list][j].reference&3);
113 }
114
115 if(s->picture_structure == PICT_FRAME){
116 memcpy(cur->ref_count[1], cur->ref_count[0], sizeof(cur->ref_count[0]));
117 memcpy(cur->ref_poc [1], cur->ref_poc [0], sizeof(cur->ref_poc [0]));
118 }
119
120 cur->mbaff= FRAME_MBAFF;
121
0a8dca87 122 h->col_fieldoff= 0;
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123 if(s->picture_structure == PICT_FRAME){
124 int cur_poc = s->current_picture_ptr->poc;
125 int *col_poc = h->ref_list[1]->field_poc;
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126 h->col_parity= (FFABS(col_poc[0] - cur_poc) >= FFABS(col_poc[1] - cur_poc));
127 ref1sidx=sidx= h->col_parity;
128 }else if(!(s->picture_structure & h->ref_list[1][0].reference) && !h->ref_list[1][0].mbaff){ // FL -> FL & differ parity
129 h->col_fieldoff= s->mb_stride*(2*(h->ref_list[1][0].reference) - 3);
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130 }
131
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132 if(cur->pict_type != FF_B_TYPE || h->direct_spatial_mv_pred)
133 return;
134
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135 for(list=0; list<2; list++){
136 fill_colmap(h, h->map_col_to_list0, list, sidx, ref1sidx, 0);
33a6c0c9 137 if(FRAME_MBAFF)
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138 for(field=0; field<2; field++)
139 fill_colmap(h, h->map_col_to_list0_field[field], list, field, field, 1);
140 }
141}
142
edb4df43 143static void pred_spatial_direct_motion(H264Context * const h, int *mb_type){
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144 MpegEncContext * const s = &h->s;
145 int b8_stride = h->b8_stride;
146 int b4_stride = h->b_stride;
147 int mb_xy = h->mb_xy;
148 int mb_type_col[2];
149 const int16_t (*l1mv0)[2], (*l1mv1)[2];
150 const int8_t *l1ref0, *l1ref1;
151 const int is_b8x8 = IS_8X8(*mb_type);
152 unsigned int sub_mb_type;
153 int i8, i4;
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154 int ref[2];
155 int mv[2];
156 int list;
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157
158 assert(h->ref_list[1][0].reference&3);
159
160#define MB_TYPE_16x16_OR_INTRA (MB_TYPE_16x16|MB_TYPE_INTRA4x4|MB_TYPE_INTRA16x16|MB_TYPE_INTRA_PCM)
161
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162 *mb_type |= MB_TYPE_L0L1;
163 sub_mb_type |= MB_TYPE_L0L1;
164
165 /* ref = min(neighbors) */
166 for(list=0; list<2; list++){
167 int left_ref = h->ref_cache[list][scan8[0] - 1];
168 int top_ref = h->ref_cache[list][scan8[0] - 8];
169 int refc = h->ref_cache[list][scan8[0] - 8 + 4];
170 const int16_t *C= h->mv_cache[list][ scan8[0] - 8 + 4];
171 if(refc == PART_NOT_AVAILABLE){
172 refc = h->ref_cache[list][scan8[0] - 8 - 1];
173 C = h-> mv_cache[list][scan8[0] - 8 - 1];
174 }
175 ref[list] = FFMIN3((unsigned)left_ref, (unsigned)top_ref, (unsigned)refc);
176 if(ref[list] >= 0){
177 //this is just pred_motion() but with the cases removed that cannot happen for direct blocks
178 const int16_t * const A= h->mv_cache[list][ scan8[0] - 1 ];
179 const int16_t * const B= h->mv_cache[list][ scan8[0] - 8 ];
180
181 int match_count= (left_ref==ref[list]) + (top_ref==ref[list]) + (refc==ref[list]);
182 if(match_count > 1){ //most common
183 mv[list]= (mid_pred(A[0], B[0], C[0])&0xFFFF)
184 +(mid_pred(A[1], B[1], C[1])<<16);
185 }else {
186 assert(match_count==1);
187 if(left_ref==ref[list]){
188 mv[list]= *(uint32_t*)A;
189 }else if(top_ref==ref[list]){
190 mv[list]= *(uint32_t*)B;
191 }else{
192 mv[list]= *(uint32_t*)C;
193 }
194 }
195 }else{
196 int mask= ~(MB_TYPE_L0 << (2*list));
197 mv[list] = 0;
198 ref[list] = -1;
199 if(!is_b8x8)
200 *mb_type &= mask;
201 sub_mb_type &= mask;
202 }
203 }
204 if(ref[0] < 0 && ref[1] < 0){
205 ref[0] = ref[1] = 0;
206 if(!is_b8x8)
207 *mb_type |= MB_TYPE_L0L1;
208 sub_mb_type |= MB_TYPE_L0L1;
209 }
210
211 if(!is_b8x8 && (mv[0]|mv[1]) == 0){
212 fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1);
213 fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1);
214 fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, 0, 4);
215 fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, 0, 4);
216 *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;
217 return;
218 }
219
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220 if(IS_INTERLACED(h->ref_list[1][0].mb_type[mb_xy])){ // AFL/AFR/FR/FL -> AFL/FL
221 if(!IS_INTERLACED(*mb_type)){ // AFR/FR -> AFL/FL
0a8dca87 222 mb_xy= s->mb_x + ((s->mb_y&~1) + h->col_parity)*s->mb_stride;
943f69a6 223 b8_stride = 0;
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224 }else{
225 mb_xy += h->col_fieldoff; // non zero for FL -> FL & differ parity
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226 }
227 goto single_col;
228 }else{ // AFL/AFR/FR/FL -> AFR/FR
229 if(IS_INTERLACED(*mb_type)){ // AFL /FL -> AFR/FR
230 mb_xy= s->mb_x + (s->mb_y&~1)*s->mb_stride;
231 mb_type_col[0] = h->ref_list[1][0].mb_type[mb_xy];
232 mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy + s->mb_stride];
233 b8_stride *= 3;
234 b4_stride *= 6;
668fd142 235
af0d6581 236 sub_mb_type |= MB_TYPE_16x16|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
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237 if( (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)
238 && (mb_type_col[1] & MB_TYPE_16x16_OR_INTRA)
239 && !is_b8x8){
af0d6581 240 *mb_type |= MB_TYPE_16x8 |MB_TYPE_DIRECT2; /* B_16x8 */
943f69a6 241 }else{
af0d6581 242 *mb_type |= MB_TYPE_8x8;
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MN
243 }
244 }else{ // AFR/FR -> AFR/FR
245single_col:
246 mb_type_col[0] =
247 mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy];
daaf6e3e 248
af0d6581 249 sub_mb_type |= MB_TYPE_16x16|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
daaf6e3e 250 if(!is_b8x8 && (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)){
af0d6581 251 *mb_type |= MB_TYPE_16x16|MB_TYPE_DIRECT2; /* B_16x16 */
464baa66 252 }else if(!is_b8x8 && (mb_type_col[0] & (MB_TYPE_16x8|MB_TYPE_8x16))){
af0d6581 253 *mb_type |= MB_TYPE_DIRECT2 | (mb_type_col[0] & (MB_TYPE_16x8|MB_TYPE_8x16));
943f69a6 254 }else{
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255 if(!h->sps.direct_8x8_inference_flag){
256 /* FIXME save sub mb types from previous frames (or derive from MVs)
257 * so we know exactly what block size to use */
af0d6581 258 sub_mb_type += (MB_TYPE_8x8-MB_TYPE_16x16); /* B_SUB_4x4 */
daaf6e3e 259 }
af0d6581 260 *mb_type |= MB_TYPE_8x8;
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261 }
262 }
263 }
264
265 l1mv0 = &h->ref_list[1][0].motion_val[0][h->mb2b_xy [mb_xy]];
266 l1mv1 = &h->ref_list[1][0].motion_val[1][h->mb2b_xy [mb_xy]];
267 l1ref0 = &h->ref_list[1][0].ref_index [0][h->mb2b8_xy[mb_xy]];
268 l1ref1 = &h->ref_list[1][0].ref_index [1][h->mb2b8_xy[mb_xy]];
269 if(!b8_stride){
270 if(s->mb_y&1){
271 l1ref0 += h->b8_stride;
272 l1ref1 += h->b8_stride;
273 l1mv0 += 2*b4_stride;
274 l1mv1 += 2*b4_stride;
275 }
276 }
277
943f69a6 278
af0d6581 279 if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])){
1be49ce5 280 int n=0;
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281 for(i8=0; i8<4; i8++){
282 int x8 = i8&1;
283 int y8 = i8>>1;
284 int xy8 = x8+y8*b8_stride;
285 int xy4 = 3*x8+y8*b4_stride;
3b9e61e4 286 int a,b;
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287
288 if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
289 continue;
290 h->sub_mb_type[i8] = sub_mb_type;
291
292 fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1);
293 fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1);
8dcbf4c7 294 if(!IS_INTRA(mb_type_col[y8]) && !h->ref_list[1][0].long_ref
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295 && ( (l1ref0[xy8] == 0 && FFABS(l1mv0[xy4][0]) <= 1 && FFABS(l1mv0[xy4][1]) <= 1)
296 || (l1ref0[xy8] < 0 && l1ref1[xy8] == 0 && FFABS(l1mv1[xy4][0]) <= 1 && FFABS(l1mv1[xy4][1]) <= 1))){
3b9e61e4 297 a=b=0;
943f69a6 298 if(ref[0] > 0)
828cfff6 299 a= mv[0];
943f69a6 300 if(ref[1] > 0)
828cfff6 301 b= mv[1];
1be49ce5 302 n++;
943f69a6 303 }else{
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MN
304 a= mv[0];
305 b= mv[1];
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MN
306 }
307 fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, a, 4);
308 fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, b, 4);
309 }
1be49ce5
MN
310 if(!is_b8x8 && !(n&3))
311 *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;
943f69a6 312 }else if(IS_16X16(*mb_type)){
3b9e61e4 313 int a,b;
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MN
314
315 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);
8dcbf4c7 317 if(!IS_INTRA(mb_type_col[0]) && !h->ref_list[1][0].long_ref
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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
055a6aa7 320 && h->x264_build>33U))){
3b9e61e4 321 a=b=0;
943f69a6 322 if(ref[0] > 0)
828cfff6 323 a= mv[0];
943f69a6 324 if(ref[1] > 0)
828cfff6 325 b= mv[1];
943f69a6 326 }else{
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MN
327 a= mv[0];
328 b= mv[1];
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MN
329 }
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{
3babc711 333 int n=0;
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334 for(i8=0; i8<4; i8++){
335 const int x8 = i8&1;
336 const int y8 = i8>>1;
337
338 if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
339 continue;
340 h->sub_mb_type[i8] = sub_mb_type;
341
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342 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);
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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
347 /* col_zero_flag */
8dcbf4c7 348 if(!IS_INTRA(mb_type_col[0]) && !h->ref_list[1][0].long_ref && ( l1ref0[x8 + y8*b8_stride] == 0
943f69a6 349 || (l1ref0[x8 + y8*b8_stride] < 0 && l1ref1[x8 + y8*b8_stride] == 0
055a6aa7 350 && h->x264_build>33U))){
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351 const int16_t (*l1mv)[2]= l1ref0[x8 + y8*b8_stride] == 0 ? l1mv0 : l1mv1;
352 if(IS_SUB_8X8(sub_mb_type)){
353 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);
3babc711 359 n+=4;
943f69a6 360 }
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361 }else{
362 int m=0;
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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;
8b9eb2df 370 m++;
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371 }
372 }
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373 if(!(m&3))
374 h->sub_mb_type[i8]+= MB_TYPE_16x16 - MB_TYPE_8x8;
3babc711 375 n+=m;
8b9eb2df 376 }
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377 }
378 }
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MN
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;
943f69a6 381 }
edb4df43
MN
382}
383
384static 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
424single_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 {
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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;
542d4a75 460 int ref_offset;
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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 }
542d4a75 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
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468
469 if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])){
943f69a6 470 int y_shift = 2*!IS_INTERLACED(*mb_type);
5aa1d759 471 assert(h->sps.direct_8x8_inference_flag);
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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
50f8e985 554 ref0 = l1ref0[x8 + y8*b8_stride];
943f69a6 555 if(ref0 >= 0)
50f8e985 556 ref0 = map_col_to_list0[0][ref0 + ref_offset];
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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}
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583
584void 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}