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Imported Debian version 2.4.3~trusty1
[deb_ffmpeg.git] / ffmpeg / libavcodec / h264_direct.c
CommitLineData
2ba45a60
DM		 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
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 "avcodec.h"
30#include "h264.h"
31#include "mpegutils.h"
32#include "rectangle.h"
33#include "thread.h"
34
35#include <assert.h>
36
37static int get_scale_factor(H264Context *const h, int poc, int poc1, int i)
38{
39 int poc0 = h->ref_list[0][i].poc;
40 int td = av_clip(poc1 - poc0, -128, 127);
41 if (td == 0 || h->ref_list[0][i].long_ref) {
42 return 256;
43 } else {
44 int tb = av_clip(poc - poc0, -128, 127);
45 int tx = (16384 + (FFABS(td) >> 1)) / td;
46 return av_clip((tb * tx + 32) >> 6, -1024, 1023);
47 }
48}
49
50void ff_h264_direct_dist_scale_factor(H264Context *const h)
51{
52 const int poc = FIELD_PICTURE(h) ? h->cur_pic_ptr->field_poc[h->picture_structure == PICT_BOTTOM_FIELD]
53 : h->cur_pic_ptr->poc;
54 const int poc1 = h->ref_list[1][0].poc;
55 int i, field;
56
57 if (FRAME_MBAFF(h))
58 for (field = 0; field < 2; field++) {
59 const int poc = h->cur_pic_ptr->field_poc[field];
60 const int poc1 = h->ref_list[1][0].field_poc[field];
61 for (i = 0; i < 2 * h->ref_count[0]; i++)
62 h->dist_scale_factor_field[field][i ^ field] =
63 get_scale_factor(h, poc, poc1, i + 16);
64 }
65
66 for (i = 0; i < h->ref_count[0]; i++)
67 h->dist_scale_factor[i] = get_scale_factor(h, poc, poc1, i);
68}
69
70static void fill_colmap(H264Context *h, int map[2][16 + 32], int list,
71 int field, int colfield, int mbafi)
72{
73 H264Picture *const ref1 = &h->ref_list[1][0];
74 int j, old_ref, rfield;
75 int start = mbafi ? 16 : 0;
76 int end = mbafi ? 16 + 2 * h->ref_count[0] : h->ref_count[0];
77 int interl = mbafi || h->picture_structure != PICT_FRAME;
78
79 /* bogus; fills in for missing frames */
80 memset(map[list], 0, sizeof(map[list]));
81
82 for (rfield = 0; rfield < 2; rfield++) {
83 for (old_ref = 0; old_ref < ref1->ref_count[colfield][list]; old_ref++) {
84 int poc = ref1->ref_poc[colfield][list][old_ref];
85
86 if (!interl)
87 poc |= 3;
88 // FIXME: store all MBAFF references so this is not needed
89 else if (interl && (poc & 3) == 3)
90 poc = (poc & ~3) + rfield + 1;
91
92 for (j = start; j < end; j++) {
93 if (4 * h->ref_list[0][j].frame_num +
94 (h->ref_list[0][j].reference & 3) == poc) {
95 int cur_ref = mbafi ? (j - 16) ^ field : j;
96 if (ref1->mbaff)
97 map[list][2 * old_ref + (rfield ^ field) + 16] = cur_ref;
98 if (rfield == field || !interl)
99 map[list][old_ref] = cur_ref;
100 break;
101 }
102 }
103 }
104 }
105}
106
107void ff_h264_direct_ref_list_init(H264Context *const h)
108{
109 H264Picture *const ref1 = &h->ref_list[1][0];
110 H264Picture *const cur = h->cur_pic_ptr;
111 int list, j, field;
112 int sidx = (h->picture_structure & 1) ^ 1;
113 int ref1sidx = (ref1->reference & 1) ^ 1;
114
115 for (list = 0; list < 2; list++) {
116 cur->ref_count[sidx][list] = h->ref_count[list];
117 for (j = 0; j < h->ref_count[list]; j++)
118 cur->ref_poc[sidx][list][j] = 4 * h->ref_list[list][j].frame_num +
119 (h->ref_list[list][j].reference & 3);
120 }
121
122 if (h->picture_structure == PICT_FRAME) {
123 memcpy(cur->ref_count[1], cur->ref_count[0], sizeof(cur->ref_count[0]));
124 memcpy(cur->ref_poc[1], cur->ref_poc[0], sizeof(cur->ref_poc[0]));
125 }
126
127 cur->mbaff = FRAME_MBAFF(h);
128
129 h->col_fieldoff = 0;
130 if (h->picture_structure == PICT_FRAME) {
131 int cur_poc = h->cur_pic_ptr->poc;
132 int *col_poc = h->ref_list[1]->field_poc;
133 h->col_parity = (FFABS(col_poc[0] - cur_poc) >=
134 FFABS(col_poc[1] - cur_poc));
135 ref1sidx =
136 sidx = h->col_parity;
137 // FL -> FL & differ parity
138 } else if (!(h->picture_structure & h->ref_list[1][0].reference) &&
139 !h->ref_list[1][0].mbaff) {
140 h->col_fieldoff = 2 * h->ref_list[1][0].reference - 3;
141 }
142
143 if (h->slice_type_nos != AV_PICTURE_TYPE_B || h->direct_spatial_mv_pred)
144 return;
145
146 for (list = 0; list < 2; list++) {
147 fill_colmap(h, h->map_col_to_list0, list, sidx, ref1sidx, 0);
148 if (FRAME_MBAFF(h))
149 for (field = 0; field < 2; field++)
150 fill_colmap(h, h->map_col_to_list0_field[field], list, field,
151 field, 1);
152 }
153}
154
155static void await_reference_mb_row(H264Context *const h, H264Picture *ref,
156 int mb_y)
157{
158 int ref_field = ref->reference - 1;
159 int ref_field_picture = ref->field_picture;
160 int ref_height = 16 * h->mb_height >> ref_field_picture;
161
162 if (!HAVE_THREADS || !(h->avctx->active_thread_type & FF_THREAD_FRAME))
163 return;
164
165 /* FIXME: It can be safe to access mb stuff
166 * even if pixels aren't deblocked yet. */
167
168 ff_thread_await_progress(&ref->tf,
169 FFMIN(16 * mb_y >> ref_field_picture,
170 ref_height - 1),
171 ref_field_picture && ref_field);
172}
173
174static void pred_spatial_direct_motion(H264Context *const h, int *mb_type)
175{
176 int b8_stride = 2;
177 int b4_stride = h->b_stride;
178 int mb_xy = h->mb_xy, mb_y = h->mb_y;
179 int mb_type_col[2];
180 const int16_t (*l1mv0)[2], (*l1mv1)[2];
181 const int8_t *l1ref0, *l1ref1;
182 const int is_b8x8 = IS_8X8(*mb_type);
183 unsigned int sub_mb_type = MB_TYPE_L0L1;
184 int i8, i4;
185 int ref[2];
186 int mv[2];
187 int list;
188
189 assert(h->ref_list[1][0].reference & 3);
190
191 await_reference_mb_row(h, &h->ref_list[1][0],
192 h->mb_y + !!IS_INTERLACED(*mb_type));
193
194#define MB_TYPE_16x16_OR_INTRA (MB_TYPE_16x16 | MB_TYPE_INTRA4x4 | \
195 MB_TYPE_INTRA16x16 | MB_TYPE_INTRA_PCM)
196
197 /* ref = min(neighbors) */
198 for (list = 0; list < 2; list++) {
199 int left_ref = h->ref_cache[list][scan8[0] - 1];
200 int top_ref = h->ref_cache[list][scan8[0] - 8];
201 int refc = h->ref_cache[list][scan8[0] - 8 + 4];
202 const int16_t *C = h->mv_cache[list][scan8[0] - 8 + 4];
203 if (refc == PART_NOT_AVAILABLE) {
204 refc = h->ref_cache[list][scan8[0] - 8 - 1];
205 C = h->mv_cache[list][scan8[0] - 8 - 1];
206 }
207 ref[list] = FFMIN3((unsigned)left_ref,
208 (unsigned)top_ref,
209 (unsigned)refc);
210 if (ref[list] >= 0) {
211 /* This is just pred_motion() but with the cases removed that
212 * cannot happen for direct blocks. */
213 const int16_t *const A = h->mv_cache[list][scan8[0] - 1];
214 const int16_t *const B = h->mv_cache[list][scan8[0] - 8];
215
216 int match_count = (left_ref == ref[list]) +
217 (top_ref == ref[list]) +
218 (refc == ref[list]);
219
220 if (match_count > 1) { // most common
221 mv[list] = pack16to32(mid_pred(A[0], B[0], C[0]),
222 mid_pred(A[1], B[1], C[1]));
223 } else {
224 assert(match_count == 1);
225 if (left_ref == ref[list])
226 mv[list] = AV_RN32A(A);
227 else if (top_ref == ref[list])
228 mv[list] = AV_RN32A(B);
229 else
230 mv[list] = AV_RN32A(C);
231 }
232 av_assert2(ref[list] < (h->ref_count[list] << !!FRAME_MBAFF(h)));
233 } else {
234 int mask = ~(MB_TYPE_L0 << (2 * list));
235 mv[list] = 0;
236 ref[list] = -1;
237 if (!is_b8x8)
238 *mb_type &= mask;
239 sub_mb_type &= mask;
240 }
241 }
242 if (ref[0] < 0 && ref[1] < 0) {
243 ref[0] = ref[1] = 0;
244 if (!is_b8x8)
245 *mb_type |= MB_TYPE_L0L1;
246 sub_mb_type |= MB_TYPE_L0L1;
247 }
248
249 if (!(is_b8x8 | mv[0] | mv[1])) {
250 fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1);
251 fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1);
252 fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, 0, 4);
253 fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, 0, 4);
254 *mb_type = (*mb_type & ~(MB_TYPE_8x8 | MB_TYPE_16x8 | MB_TYPE_8x16 |
255 MB_TYPE_P1L0 | MB_TYPE_P1L1)) |
256 MB_TYPE_16x16 | MB_TYPE_DIRECT2;
257 return;
258 }
259
260 if (IS_INTERLACED(h->ref_list[1][0].mb_type[mb_xy])) { // AFL/AFR/FR/FL -> AFL/FL
261 if (!IS_INTERLACED(*mb_type)) { // AFR/FR -> AFL/FL
262 mb_y = (h->mb_y & ~1) + h->col_parity;
263 mb_xy = h->mb_x +
264 ((h->mb_y & ~1) + h->col_parity) * h->mb_stride;
265 b8_stride = 0;
266 } else {
267 mb_y += h->col_fieldoff;
268 mb_xy += h->mb_stride * h->col_fieldoff; // non-zero for FL -> FL & differ parity
269 }
270 goto single_col;
271 } else { // AFL/AFR/FR/FL -> AFR/FR
272 if (IS_INTERLACED(*mb_type)) { // AFL /FL -> AFR/FR
273 mb_y = h->mb_y & ~1;
274 mb_xy = (h->mb_y & ~1) * h->mb_stride + h->mb_x;
275 mb_type_col[0] = h->ref_list[1][0].mb_type[mb_xy];
276 mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy + h->mb_stride];
277 b8_stride = 2 + 4 * h->mb_stride;
278 b4_stride *= 6;
279 if (IS_INTERLACED(mb_type_col[0]) !=
280 IS_INTERLACED(mb_type_col[1])) {
281 mb_type_col[0] &= ~MB_TYPE_INTERLACED;
282 mb_type_col[1] &= ~MB_TYPE_INTERLACED;
283 }
284
285 sub_mb_type |= MB_TYPE_16x16 | MB_TYPE_DIRECT2; /* B_SUB_8x8 */
286 if ((mb_type_col[0] & MB_TYPE_16x16_OR_INTRA) &&
287 (mb_type_col[1] & MB_TYPE_16x16_OR_INTRA) &&
288 !is_b8x8) {
289 *mb_type |= MB_TYPE_16x8 | MB_TYPE_DIRECT2; /* B_16x8 */
290 } else {
291 *mb_type |= MB_TYPE_8x8;
292 }
293 } else { // AFR/FR -> AFR/FR
294single_col:
295 mb_type_col[0] =
296 mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy];
297
298 sub_mb_type |= MB_TYPE_16x16 | MB_TYPE_DIRECT2; /* B_SUB_8x8 */
299 if (!is_b8x8 && (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)) {
300 *mb_type |= MB_TYPE_16x16 | MB_TYPE_DIRECT2; /* B_16x16 */
301 } else if (!is_b8x8 &&
302 (mb_type_col[0] & (MB_TYPE_16x8 | MB_TYPE_8x16))) {
303 *mb_type |= MB_TYPE_DIRECT2 |
304 (mb_type_col[0] & (MB_TYPE_16x8 | MB_TYPE_8x16));
305 } else {
306 if (!h->sps.direct_8x8_inference_flag) {
307 /* FIXME: Save sub mb types from previous frames (or derive
308 * from MVs) so we know exactly what block size to use. */
309 sub_mb_type += (MB_TYPE_8x8 - MB_TYPE_16x16); /* B_SUB_4x4 */
310 }
311 *mb_type |= MB_TYPE_8x8;
312 }
313 }
314 }
315
316 await_reference_mb_row(h, &h->ref_list[1][0], mb_y);
317
318 l1mv0 = (void*)&h->ref_list[1][0].motion_val[0][h->mb2b_xy[mb_xy]];
319 l1mv1 = (void*)&h->ref_list[1][0].motion_val[1][h->mb2b_xy[mb_xy]];
320 l1ref0 = &h->ref_list[1][0].ref_index[0][4 * mb_xy];
321 l1ref1 = &h->ref_list[1][0].ref_index[1][4 * mb_xy];
322 if (!b8_stride) {
323 if (h->mb_y & 1) {
324 l1ref0 += 2;
325 l1ref1 += 2;
326 l1mv0 += 2 * b4_stride;
327 l1mv1 += 2 * b4_stride;
328 }
329 }
330
331 if (IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])) {
332 int n = 0;
333 for (i8 = 0; i8 < 4; i8++) {
334 int x8 = i8 & 1;
335 int y8 = i8 >> 1;
336 int xy8 = x8 + y8 * b8_stride;
337 int xy4 = x8 * 3 + y8 * b4_stride;
338 int a, b;
339
340 if (is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
341 continue;
342 h->sub_mb_type[i8] = sub_mb_type;
343
344 fill_rectangle(&h->ref_cache[0][scan8[i8 * 4]], 2, 2, 8,
345 (uint8_t)ref[0], 1);
346 fill_rectangle(&h->ref_cache[1][scan8[i8 * 4]], 2, 2, 8,
347 (uint8_t)ref[1], 1);
348 if (!IS_INTRA(mb_type_col[y8]) && !h->ref_list[1][0].long_ref &&
349 ((l1ref0[xy8] == 0 &&
350 FFABS(l1mv0[xy4][0]) <= 1 &&
351 FFABS(l1mv0[xy4][1]) <= 1) ||
352 (l1ref0[xy8] < 0 &&
353 l1ref1[xy8] == 0 &&
354 FFABS(l1mv1[xy4][0]) <= 1 &&
355 FFABS(l1mv1[xy4][1]) <= 1))) {
356 a =
357 b = 0;
358 if (ref[0] > 0)
359 a = mv[0];
360 if (ref[1] > 0)
361 b = mv[1];
362 n++;
363 } else {
364 a = mv[0];
365 b = mv[1];
366 }
367 fill_rectangle(&h->mv_cache[0][scan8[i8 * 4]], 2, 2, 8, a, 4);
368 fill_rectangle(&h->mv_cache[1][scan8[i8 * 4]], 2, 2, 8, b, 4);
369 }
370 if (!is_b8x8 && !(n & 3))
371 *mb_type = (*mb_type & ~(MB_TYPE_8x8 | MB_TYPE_16x8 | MB_TYPE_8x16 |
372 MB_TYPE_P1L0 | MB_TYPE_P1L1)) |
373 MB_TYPE_16x16 | MB_TYPE_DIRECT2;
374 } else if (IS_16X16(*mb_type)) {
375 int a, b;
376
377 fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1);
378 fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1);
379 if (!IS_INTRA(mb_type_col[0]) && !h->ref_list[1][0].long_ref &&
380 ((l1ref0[0] == 0 &&
381 FFABS(l1mv0[0][0]) <= 1 &&
382 FFABS(l1mv0[0][1]) <= 1) ||
383 (l1ref0[0] < 0 && !l1ref1[0] &&
384 FFABS(l1mv1[0][0]) <= 1 &&
385 FFABS(l1mv1[0][1]) <= 1 &&
386 h->x264_build > 33U))) {
387 a = b = 0;
388 if (ref[0] > 0)
389 a = mv[0];
390 if (ref[1] > 0)
391 b = mv[1];
392 } else {
393 a = mv[0];
394 b = mv[1];
395 }
396 fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, a, 4);
397 fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, b, 4);
398 } else {
399 int n = 0;
400 for (i8 = 0; i8 < 4; i8++) {
401 const int x8 = i8 & 1;
402 const int y8 = i8 >> 1;
403
404 if (is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
405 continue;
406 h->sub_mb_type[i8] = sub_mb_type;
407
408 fill_rectangle(&h->mv_cache[0][scan8[i8 * 4]], 2, 2, 8, mv[0], 4);
409 fill_rectangle(&h->mv_cache[1][scan8[i8 * 4]], 2, 2, 8, mv[1], 4);
410 fill_rectangle(&h->ref_cache[0][scan8[i8 * 4]], 2, 2, 8,
411 (uint8_t)ref[0], 1);
412 fill_rectangle(&h->ref_cache[1][scan8[i8 * 4]], 2, 2, 8,
413 (uint8_t)ref[1], 1);
414
415 assert(b8_stride == 2);
416 /* col_zero_flag */
417 if (!IS_INTRA(mb_type_col[0]) && !h->ref_list[1][0].long_ref &&
418 (l1ref0[i8] == 0 ||
419 (l1ref0[i8] < 0 &&
420 l1ref1[i8] == 0 &&
421 h->x264_build > 33U))) {
422 const int16_t (*l1mv)[2] = l1ref0[i8] == 0 ? l1mv0 : l1mv1;
423 if (IS_SUB_8X8(sub_mb_type)) {
424 const int16_t *mv_col = l1mv[x8 * 3 + y8 * 3 * b4_stride];
425 if (FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1) {
426 if (ref[0] == 0)
427 fill_rectangle(&h->mv_cache[0][scan8[i8 * 4]], 2, 2,
428 8, 0, 4);
429 if (ref[1] == 0)
430 fill_rectangle(&h->mv_cache[1][scan8[i8 * 4]], 2, 2,
431 8, 0, 4);
432 n += 4;
433 }
434 } else {
435 int m = 0;
436 for (i4 = 0; i4 < 4; i4++) {
437 const int16_t *mv_col = l1mv[x8 * 2 + (i4 & 1) +
438 (y8 * 2 + (i4 >> 1)) * b4_stride];
439 if (FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1) {
440 if (ref[0] == 0)
441 AV_ZERO32(h->mv_cache[0][scan8[i8 * 4 + i4]]);
442 if (ref[1] == 0)
443 AV_ZERO32(h->mv_cache[1][scan8[i8 * 4 + i4]]);
444 m++;
445 }
446 }
447 if (!(m & 3))
448 h->sub_mb_type[i8] += MB_TYPE_16x16 - MB_TYPE_8x8;
449 n += m;
450 }
451 }
452 }
453 if (!is_b8x8 && !(n & 15))
454 *mb_type = (*mb_type & ~(MB_TYPE_8x8 | MB_TYPE_16x8 | MB_TYPE_8x16 |
455 MB_TYPE_P1L0 | MB_TYPE_P1L1)) |
456 MB_TYPE_16x16 | MB_TYPE_DIRECT2;
457 }
458}
459
460static void pred_temp_direct_motion(H264Context *const h, int *mb_type)
461{
462 int b8_stride = 2;
463 int b4_stride = h->b_stride;
464 int mb_xy = h->mb_xy, mb_y = h->mb_y;
465 int mb_type_col[2];
466 const int16_t (*l1mv0)[2], (*l1mv1)[2];
467 const int8_t *l1ref0, *l1ref1;
468 const int is_b8x8 = IS_8X8(*mb_type);
469 unsigned int sub_mb_type;
470 int i8, i4;
471
472 assert(h->ref_list[1][0].reference & 3);
473
474 await_reference_mb_row(h, &h->ref_list[1][0],
475 h->mb_y + !!IS_INTERLACED(*mb_type));
476
477 if (IS_INTERLACED(h->ref_list[1][0].mb_type[mb_xy])) { // AFL/AFR/FR/FL -> AFL/FL
478 if (!IS_INTERLACED(*mb_type)) { // AFR/FR -> AFL/FL
479 mb_y = (h->mb_y & ~1) + h->col_parity;
480 mb_xy = h->mb_x +
481 ((h->mb_y & ~1) + h->col_parity) * h->mb_stride;
482 b8_stride = 0;
483 } else {
484 mb_y += h->col_fieldoff;
485 mb_xy += h->mb_stride * h->col_fieldoff; // non-zero for FL -> FL & differ parity
486 }
487 goto single_col;
488 } else { // AFL/AFR/FR/FL -> AFR/FR
489 if (IS_INTERLACED(*mb_type)) { // AFL /FL -> AFR/FR
490 mb_y = h->mb_y & ~1;
491 mb_xy = h->mb_x + (h->mb_y & ~1) * h->mb_stride;
492 mb_type_col[0] = h->ref_list[1][0].mb_type[mb_xy];
493 mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy + h->mb_stride];
494 b8_stride = 2 + 4 * h->mb_stride;
495 b4_stride *= 6;
496 if (IS_INTERLACED(mb_type_col[0]) !=
497 IS_INTERLACED(mb_type_col[1])) {
498 mb_type_col[0] &= ~MB_TYPE_INTERLACED;
499 mb_type_col[1] &= ~MB_TYPE_INTERLACED;
500 }
501
502 sub_mb_type = MB_TYPE_16x16 | MB_TYPE_P0L0 | MB_TYPE_P0L1 |
503 MB_TYPE_DIRECT2; /* B_SUB_8x8 */
504
505 if ((mb_type_col[0] & MB_TYPE_16x16_OR_INTRA) &&
506 (mb_type_col[1] & MB_TYPE_16x16_OR_INTRA) &&
507 !is_b8x8) {
508 *mb_type |= MB_TYPE_16x8 | MB_TYPE_L0L1 |
509 MB_TYPE_DIRECT2; /* B_16x8 */
510 } else {
511 *mb_type |= MB_TYPE_8x8 | MB_TYPE_L0L1;
512 }
513 } else { // AFR/FR -> AFR/FR
514single_col:
515 mb_type_col[0] =
516 mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy];
517
518 sub_mb_type = MB_TYPE_16x16 | MB_TYPE_P0L0 | MB_TYPE_P0L1 |
519 MB_TYPE_DIRECT2; /* B_SUB_8x8 */
520 if (!is_b8x8 && (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)) {
521 *mb_type |= MB_TYPE_16x16 | MB_TYPE_P0L0 | MB_TYPE_P0L1 |
522 MB_TYPE_DIRECT2; /* B_16x16 */
523 } else if (!is_b8x8 &&
524 (mb_type_col[0] & (MB_TYPE_16x8 | MB_TYPE_8x16))) {
525 *mb_type |= MB_TYPE_L0L1 | MB_TYPE_DIRECT2 |
526 (mb_type_col[0] & (MB_TYPE_16x8 | MB_TYPE_8x16));
527 } else {
528 if (!h->sps.direct_8x8_inference_flag) {
529 /* FIXME: save sub mb types from previous frames (or derive
530 * from MVs) so we know exactly what block size to use */
531 sub_mb_type = MB_TYPE_8x8 | MB_TYPE_P0L0 | MB_TYPE_P0L1 |
532 MB_TYPE_DIRECT2; /* B_SUB_4x4 */
533 }
534 *mb_type |= MB_TYPE_8x8 | MB_TYPE_L0L1;
535 }
536 }
537 }
538
539 await_reference_mb_row(h, &h->ref_list[1][0], mb_y);
540
541 l1mv0 = (void*)&h->ref_list[1][0].motion_val[0][h->mb2b_xy[mb_xy]];
542 l1mv1 = (void*)&h->ref_list[1][0].motion_val[1][h->mb2b_xy[mb_xy]];
543 l1ref0 = &h->ref_list[1][0].ref_index[0][4 * mb_xy];
544 l1ref1 = &h->ref_list[1][0].ref_index[1][4 * mb_xy];
545 if (!b8_stride) {
546 if (h->mb_y & 1) {
547 l1ref0 += 2;
548 l1ref1 += 2;
549 l1mv0 += 2 * b4_stride;
550 l1mv1 += 2 * b4_stride;
551 }
552 }
553
554 {
555 const int *map_col_to_list0[2] = { h->map_col_to_list0[0],
556 h->map_col_to_list0[1] };
557 const int *dist_scale_factor = h->dist_scale_factor;
558 int ref_offset;
559
560 if (FRAME_MBAFF(h) && IS_INTERLACED(*mb_type)) {
561 map_col_to_list0[0] = h->map_col_to_list0_field[h->mb_y & 1][0];
562 map_col_to_list0[1] = h->map_col_to_list0_field[h->mb_y & 1][1];
563 dist_scale_factor = h->dist_scale_factor_field[h->mb_y & 1];
564 }
565 ref_offset = (h->ref_list[1][0].mbaff << 4) & (mb_type_col[0] >> 3);
566
567 if (IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])) {
568 int y_shift = 2 * !IS_INTERLACED(*mb_type);
569 assert(h->sps.direct_8x8_inference_flag);
570
571 for (i8 = 0; i8 < 4; i8++) {
572 const int x8 = i8 & 1;
573 const int y8 = i8 >> 1;
574 int ref0, scale;
575 const int16_t (*l1mv)[2] = l1mv0;
576
577 if (is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
578 continue;
579 h->sub_mb_type[i8] = sub_mb_type;
580
581 fill_rectangle(&h->ref_cache[1][scan8[i8 * 4]], 2, 2, 8, 0, 1);
582 if (IS_INTRA(mb_type_col[y8])) {
583 fill_rectangle(&h->ref_cache[0][scan8[i8 * 4]], 2, 2, 8, 0, 1);
584 fill_rectangle(&h->mv_cache[0][scan8[i8 * 4]], 2, 2, 8, 0, 4);
585 fill_rectangle(&h->mv_cache[1][scan8[i8 * 4]], 2, 2, 8, 0, 4);
586 continue;
587 }
588
589 ref0 = l1ref0[x8 + y8 * b8_stride];
590 if (ref0 >= 0)
591 ref0 = map_col_to_list0[0][ref0 + ref_offset];
592 else {
593 ref0 = map_col_to_list0[1][l1ref1[x8 + y8 * b8_stride] +
594 ref_offset];
595 l1mv = l1mv1;
596 }
597 scale = dist_scale_factor[ref0];
598 fill_rectangle(&h->ref_cache[0][scan8[i8 * 4]], 2, 2, 8,
599 ref0, 1);
600
601 {
602 const int16_t *mv_col = l1mv[x8 * 3 + y8 * b4_stride];
603 int my_col = (mv_col[1] << y_shift) / 2;
604 int mx = (scale * mv_col[0] + 128) >> 8;
605 int my = (scale * my_col + 128) >> 8;
606 fill_rectangle(&h->mv_cache[0][scan8[i8 * 4]], 2, 2, 8,
607 pack16to32(mx, my), 4);
608 fill_rectangle(&h->mv_cache[1][scan8[i8 * 4]], 2, 2, 8,
609 pack16to32(mx - mv_col[0], my - my_col), 4);
610 }
611 }
612 return;
613 }
614
615 /* one-to-one mv scaling */
616
617 if (IS_16X16(*mb_type)) {
618 int ref, mv0, mv1;
619
620 fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, 0, 1);
621 if (IS_INTRA(mb_type_col[0])) {
622 ref = mv0 = mv1 = 0;
623 } else {
624 const int ref0 = l1ref0[0] >= 0 ? map_col_to_list0[0][l1ref0[0] + ref_offset]
625 : map_col_to_list0[1][l1ref1[0] + ref_offset];
626 const int scale = dist_scale_factor[ref0];
627 const int16_t *mv_col = l1ref0[0] >= 0 ? l1mv0[0] : l1mv1[0];
628 int mv_l0[2];
629 mv_l0[0] = (scale * mv_col[0] + 128) >> 8;
630 mv_l0[1] = (scale * mv_col[1] + 128) >> 8;
631 ref = ref0;
632 mv0 = pack16to32(mv_l0[0], mv_l0[1]);
633 mv1 = pack16to32(mv_l0[0] - mv_col[0], mv_l0[1] - mv_col[1]);
634 }
635 fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, ref, 1);
636 fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, mv0, 4);
637 fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, mv1, 4);
638 } else {
639 for (i8 = 0; i8 < 4; i8++) {
640 const int x8 = i8 & 1;
641 const int y8 = i8 >> 1;
642 int ref0, scale;
643 const int16_t (*l1mv)[2] = l1mv0;
644
645 if (is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
646 continue;
647 h->sub_mb_type[i8] = sub_mb_type;
648 fill_rectangle(&h->ref_cache[1][scan8[i8 * 4]], 2, 2, 8, 0, 1);
649 if (IS_INTRA(mb_type_col[0])) {
650 fill_rectangle(&h->ref_cache[0][scan8[i8 * 4]], 2, 2, 8, 0, 1);
651 fill_rectangle(&h->mv_cache[0][scan8[i8 * 4]], 2, 2, 8, 0, 4);
652 fill_rectangle(&h->mv_cache[1][scan8[i8 * 4]], 2, 2, 8, 0, 4);
653 continue;
654 }
655
656 assert(b8_stride == 2);
657 ref0 = l1ref0[i8];
658 if (ref0 >= 0)
659 ref0 = map_col_to_list0[0][ref0 + ref_offset];
660 else {
661 ref0 = map_col_to_list0[1][l1ref1[i8] + ref_offset];
662 l1mv = l1mv1;
663 }
664 scale = dist_scale_factor[ref0];
665
666 fill_rectangle(&h->ref_cache[0][scan8[i8 * 4]], 2, 2, 8,
667 ref0, 1);
668 if (IS_SUB_8X8(sub_mb_type)) {
669 const int16_t *mv_col = l1mv[x8 * 3 + y8 * 3 * b4_stride];
670 int mx = (scale * mv_col[0] + 128) >> 8;
671 int my = (scale * mv_col[1] + 128) >> 8;
672 fill_rectangle(&h->mv_cache[0][scan8[i8 * 4]], 2, 2, 8,
673 pack16to32(mx, my), 4);
674 fill_rectangle(&h->mv_cache[1][scan8[i8 * 4]], 2, 2, 8,
675 pack16to32(mx - mv_col[0], my - mv_col[1]), 4);
676 } else {
677 for (i4 = 0; i4 < 4; i4++) {
678 const int16_t *mv_col = l1mv[x8 * 2 + (i4 & 1) +
679 (y8 * 2 + (i4 >> 1)) * b4_stride];
680 int16_t *mv_l0 = h->mv_cache[0][scan8[i8 * 4 + i4]];
681 mv_l0[0] = (scale * mv_col[0] + 128) >> 8;
682 mv_l0[1] = (scale * mv_col[1] + 128) >> 8;
683 AV_WN32A(h->mv_cache[1][scan8[i8 * 4 + i4]],
684 pack16to32(mv_l0[0] - mv_col[0],
685 mv_l0[1] - mv_col[1]));
686 }
687 }
688 }
689 }
690 }
691}
692
693void ff_h264_pred_direct_motion(H264Context *const h, int *mb_type)
694{
695 if (h->direct_spatial_mv_pred)
696 pred_spatial_direct_motion(h, mb_type);
697 else
698 pred_temp_direct_motion(h, mb_type);
699}
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