FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/h264_mvpred.h
Date: 2026-01-23 19:11:46
Exec Total Coverage
Lines: 490 492 99.6%
Functions: 14 14 100.0%
Branches: 363 364 99.7%
Line Branch Exec Source
1 /*
2 * H.26L/H.264/AVC/JVT/14496-10/... motion vector prediction
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 / MPEG-4 part10 motion vector prediction.
25 * @author Michael Niedermayer <michaelni@gmx.at>
26 */
27
28 #ifndef AVCODEC_H264_MVPRED_H
29 #define AVCODEC_H264_MVPRED_H
30
31 #include "h264dec.h"
32 #include "mpegutils.h"
33 #include "rectangle.h"
34
35 #include "libavutil/avassert.h"
36 #include "libavutil/mem_internal.h"
37
38
39 /**
40 * Get the predicted intra4x4 prediction mode.
41 */
42 30643308 static av_always_inline int pred_intra_mode(const H264Context *h,
43 H264SliceContext *sl, int n)
44 {
45 30643308 const int index8 = scan8[n];
46 30643308 const int left = sl->intra4x4_pred_mode_cache[index8 - 1];
47 30643308 const int top = sl->intra4x4_pred_mode_cache[index8 - 8];
48 30643308 const int min = FFMIN(left, top);
49
50 ff_tlog(h->avctx, "mode:%d %d min:%d\n", left, top, min);
51
52
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 30643308 if (min < 0)
53 858680 return DC_PRED;
54 else
55 29784628 return min;
56 }
57
58 3070812 static av_always_inline void write_back_intra_pred_mode(const H264Context *h,
59 H264SliceContext *sl)
60 {
61 3070812 int8_t *i4x4 = sl->intra4x4_pred_mode + h->mb2br_xy[sl->mb_xy];
62 3070812 int8_t *i4x4_cache = sl->intra4x4_pred_mode_cache;
63
64 3070812 AV_COPY32(i4x4, i4x4_cache + 4 + 8 * 4);
65 3070812 i4x4[4] = i4x4_cache[7 + 8 * 3];
66 3070812 i4x4[5] = i4x4_cache[7 + 8 * 2];
67 3070812 i4x4[6] = i4x4_cache[7 + 8 * 1];
68 3070812 }
69
70 10999457 static av_always_inline void write_back_non_zero_count(const H264Context *h,
71 H264SliceContext *sl)
72 {
73 10999457 const int mb_xy = sl->mb_xy;
74 10999457 uint8_t *nnz = h->non_zero_count[mb_xy];
75 10999457 uint8_t *nnz_cache = sl->non_zero_count_cache;
76
77 10999457 AV_COPY32(&nnz[ 0], &nnz_cache[4 + 8 * 1]);
78 10999457 AV_COPY32(&nnz[ 4], &nnz_cache[4 + 8 * 2]);
79 10999457 AV_COPY32(&nnz[ 8], &nnz_cache[4 + 8 * 3]);
80 10999457 AV_COPY32(&nnz[12], &nnz_cache[4 + 8 * 4]);
81 10999457 AV_COPY32(&nnz[16], &nnz_cache[4 + 8 * 6]);
82 10999457 AV_COPY32(&nnz[20], &nnz_cache[4 + 8 * 7]);
83 10999457 AV_COPY32(&nnz[32], &nnz_cache[4 + 8 * 11]);
84 10999457 AV_COPY32(&nnz[36], &nnz_cache[4 + 8 * 12]);
85
86
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 10999457 if (!h->chroma_y_shift) {
87 971539 AV_COPY32(&nnz[24], &nnz_cache[4 + 8 * 8]);
88 971539 AV_COPY32(&nnz[28], &nnz_cache[4 + 8 * 9]);
89 971539 AV_COPY32(&nnz[40], &nnz_cache[4 + 8 * 13]);
90 971539 AV_COPY32(&nnz[44], &nnz_cache[4 + 8 * 14]);
91 }
92 10999457 }
93
94 15041606 static av_always_inline void write_back_motion_list(const H264Context *h,
95 H264SliceContext *sl,
96 int b_stride,
97 int b_xy, int b8_xy,
98 int mb_type, int list)
99 {
100 15041606 int16_t(*mv_dst)[2] = &h->cur_pic.motion_val[list][b_xy];
101 15041606 int16_t(*mv_src)[2] = &sl->mv_cache[list][scan8[0]];
102 15041606 AV_COPY128(mv_dst + 0 * b_stride, mv_src + 8 * 0);
103 15041606 AV_COPY128(mv_dst + 1 * b_stride, mv_src + 8 * 1);
104 15041606 AV_COPY128(mv_dst + 2 * b_stride, mv_src + 8 * 2);
105 15041606 AV_COPY128(mv_dst + 3 * b_stride, mv_src + 8 * 3);
106 if (CABAC(h)) {
107 11007193 uint8_t (*mvd_dst)[2] = &sl->mvd_table[list][FMO ? 8 * sl->mb_xy
108 11007193 : h->mb2br_xy[sl->mb_xy]];
109 11007193 uint8_t(*mvd_src)[2] = &sl->mvd_cache[list][scan8[0]];
110
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 11007193 if (IS_SKIP(mb_type)) {
111 5147395 AV_ZERO128(mvd_dst);
112 } else {
113 5859798 AV_COPY64(mvd_dst, mvd_src + 8 * 3);
114 5859798 AV_COPY16(mvd_dst + 3 + 3, mvd_src + 3 + 8 * 0);
115 5859798 AV_COPY16(mvd_dst + 3 + 2, mvd_src + 3 + 8 * 1);
116 5859798 AV_COPY16(mvd_dst + 3 + 1, mvd_src + 3 + 8 * 2);
117 }
118 }
119
120 {
121 15041606 int8_t *ref_index = &h->cur_pic.ref_index[list][b8_xy];
122 15041606 int8_t *ref_cache = sl->ref_cache[list];
123 15041606 ref_index[0 + 0 * 2] = ref_cache[scan8[0]];
124 15041606 ref_index[1 + 0 * 2] = ref_cache[scan8[4]];
125 15041606 ref_index[0 + 1 * 2] = ref_cache[scan8[8]];
126 15041606 ref_index[1 + 1 * 2] = ref_cache[scan8[12]];
127 }
128 15041606 }
129
130 11206159 static av_always_inline void write_back_motion(const H264Context *h,
131 H264SliceContext *sl,
132 int mb_type)
133 {
134 11206159 const int b_stride = h->b_stride;
135 11206159 const int b_xy = 4 * sl->mb_x + 4 * sl->mb_y * h->b_stride; // try mb2b(8)_xy
136 11206159 const int b8_xy = 4 * sl->mb_xy;
137
138
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 11206159 if (USES_LIST(mb_type, 0)) {
139 10382101 write_back_motion_list(h, sl, b_stride, b_xy, b8_xy, mb_type, 0);
140 } else {
141 824058 fill_rectangle(&h->cur_pic.ref_index[0][b8_xy],
142 2, 2, 2, (uint8_t)LIST_NOT_USED, 1);
143 }
144
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 11206159 if (USES_LIST(mb_type, 1))
145 4659505 write_back_motion_list(h, sl, b_stride, b_xy, b8_xy, mb_type, 1);
146
147
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 7852034 if (sl->slice_type_nos == AV_PICTURE_TYPE_B && CABAC(h)) {
148
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 4619066 if (IS_8X8(mb_type)) {
149 424290 uint8_t *direct_table = &h->direct_table[4 * sl->mb_xy];
150 424290 direct_table[1] = sl->sub_mb_type[1] >> 1;
151 424290 direct_table[2] = sl->sub_mb_type[2] >> 1;
152 424290 direct_table[3] = sl->sub_mb_type[3] >> 1;
153 }
154 }
155 11206159 }
156
157 303823 static av_always_inline int get_dct8x8_allowed(const H264Context *h, H264SliceContext *sl)
158 {
159
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 303823 if (h->ps.sps->direct_8x8_inference_flag)
160 298946 return !(AV_RN64A(sl->sub_mb_type) &
161 ((MB_TYPE_16x8 | MB_TYPE_8x16 | MB_TYPE_8x8) *
162 0x0001000100010001ULL));
163 else
164 4877 return !(AV_RN64A(sl->sub_mb_type) &
165 ((MB_TYPE_16x8 | MB_TYPE_8x16 | MB_TYPE_8x8 | MB_TYPE_DIRECT2) *
166 0x0001000100010001ULL));
167 }
168
169 18464879 static av_always_inline int fetch_diagonal_mv(const H264Context *h, H264SliceContext *sl,
170 const int16_t **C,
171 int i, int list, int part_width)
172 {
173 18464879 const int topright_ref = sl->ref_cache[list][i - 8 + part_width];
174
175 /* there is no consistent mapping of mvs to neighboring locations that will
176 * make mbaff happy, so we can't move all this logic to fill_caches */
177
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 18464879 if (FRAME_MBAFF(h)) {
178 #define SET_DIAG_MV(MV_OP, REF_OP, XY, Y4) \
179 const int xy = XY, y4 = Y4; \
180 const int mb_type = mb_types[xy + (y4 >> 2) * h->mb_stride]; \
181 if (!USES_LIST(mb_type, list)) \
182 return LIST_NOT_USED; \
183 mv = h->cur_pic_ptr->motion_val[list][h->mb2b_xy[xy] + 3 + y4 * h->b_stride]; \
184 sl->mv_cache[list][scan8[0] - 2][0] = mv[0]; \
185 sl->mv_cache[list][scan8[0] - 2][1] = mv[1] MV_OP; \
186 return h->cur_pic_ptr->ref_index[list][4 * xy + 1 + (y4 & ~1)] REF_OP;
187
188
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 2972513 if (topright_ref == PART_NOT_AVAILABLE
189
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 1302598 && i >= scan8[0] + 8 && (i & 7) == 4
190
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 199070 && sl->ref_cache[list][scan8[0] - 1] != PART_NOT_AVAILABLE) {
191 190894 const uint32_t *mb_types = h->cur_pic_ptr->mb_type;
192 const int16_t *mv;
193 190894 AV_ZERO32(sl->mv_cache[list][scan8[0] - 2]);
194 190894 *C = sl->mv_cache[list][scan8[0] - 2];
195
196
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 190894 if (!MB_FIELD(sl) && IS_INTERLACED(sl->left_type[0])) {
197
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 26751 SET_DIAG_MV(* 2, >> 1, sl->left_mb_xy[0] + h->mb_stride,
198 (sl->mb_y & 1) * 2 + (i >> 5));
199 }
200
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 164143 if (MB_FIELD(sl) && !IS_INTERLACED(sl->left_type[0])) {
201 // left shift will turn LIST_NOT_USED into PART_NOT_AVAILABLE, but that's OK.
202
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 36130 SET_DIAG_MV(/ 2, *2, sl->left_mb_xy[i >= 36], ((i >> 2)) & 3);
203 }
204 }
205 #undef SET_DIAG_MV
206 }
207
208
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 18401998 if (topright_ref != PART_NOT_AVAILABLE) {
209 11737038 *C = sl->mv_cache[list][i - 8 + part_width];
210 11737038 return topright_ref;
211 } else {
212 ff_tlog(h->avctx, "topright MV not available\n");
213
214 6664960 *C = sl->mv_cache[list][i - 8 - 1];
215 6664960 return sl->ref_cache[list][i - 8 - 1];
216 }
217 }
218
219 /**
220 * Get the predicted MV.
221 * @param n the block index
222 * @param part_width the width of the partition (4, 8,16) -> (1, 2, 4)
223 * @param mx the x component of the predicted motion vector
224 * @param my the y component of the predicted motion vector
225 */
226 17814169 static av_always_inline void pred_motion(const H264Context *const h,
227 H264SliceContext *sl,
228 int n,
229 int part_width, int list, int ref,
230 int *const mx, int *const my)
231 {
232 17814169 const int index8 = scan8[n];
233 17814169 const int top_ref = sl->ref_cache[list][index8 - 8];
234 17814169 const int left_ref = sl->ref_cache[list][index8 - 1];
235 17814169 const int16_t *const A = sl->mv_cache[list][index8 - 1];
236 17814169 const int16_t *const B = sl->mv_cache[list][index8 - 8];
237 const int16_t *C;
238 int diagonal_ref, match_count;
239
240 av_assert2(part_width == 1 || part_width == 2 || part_width == 4);
241
242 /* mv_cache
243 * B . . A T T T T
244 * U . . L . . , .
245 * U . . L . . . .
246 * U . . L . . , .
247 * . . . L . . . .
248 */
249
250 17814169 diagonal_ref = fetch_diagonal_mv(h, sl, &C, index8, list, part_width);
251 17814169 match_count = (diagonal_ref == ref) + (top_ref == ref) + (left_ref == ref);
252 ff_tlog(h->avctx, "pred_motion match_count=%d\n", match_count);
253
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 17814169 if (match_count > 1) { //most common
254 13208019 *mx = mid_pred(A[0], B[0], C[0]);
255 13208019 *my = mid_pred(A[1], B[1], C[1]);
256
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 4606150 } else if (match_count == 1) {
257
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 3122628 if (left_ref == ref) {
258 1970662 *mx = A[0];
259 1970662 *my = A[1];
260
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 1151966 } else if (top_ref == ref) {
261 824799 *mx = B[0];
262 824799 *my = B[1];
263 } else {
264 327167 *mx = C[0];
265 327167 *my = C[1];
266 }
267 } else {
268
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 1483522 if (top_ref == PART_NOT_AVAILABLE &&
269
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 244206 diagonal_ref == PART_NOT_AVAILABLE &&
270 left_ref != PART_NOT_AVAILABLE) {
271 218702 *mx = A[0];
272 218702 *my = A[1];
273 } else {
274 1264820 *mx = mid_pred(A[0], B[0], C[0]);
275 1264820 *my = mid_pred(A[1], B[1], C[1]);
276 }
277 }
278
279 ff_tlog(h->avctx,
280 "pred_motion (%2d %2d %2d) (%2d %2d %2d) (%2d %2d %2d) -> (%2d %2d %2d) at %2d %2d %d list %d\n",
281 top_ref, B[0], B[1], diagonal_ref, C[0], C[1], left_ref,
282 A[0], A[1], ref, *mx, *my, sl->mb_x, sl->mb_y, n, list);
283 17814169 }
284
285 /**
286 * Get the directionally predicted 16x8 MV.
287 * @param n the block index
288 * @param mx the x component of the predicted motion vector
289 * @param my the y component of the predicted motion vector
290 */
291 1453920 static av_always_inline void pred_16x8_motion(const H264Context *const h,
292 H264SliceContext *sl,
293 int n, int list, int ref,
294 int *const mx, int *const my)
295 {
296
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 1453920 if (n == 0) {
297 726061 const int top_ref = sl->ref_cache[list][scan8[0] - 8];
298 726061 const int16_t *const B = sl->mv_cache[list][scan8[0] - 8];
299
300 ff_tlog(h->avctx, "pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d\n",
301 top_ref, B[0], B[1], sl->mb_x, sl->mb_y, n, list);
302
303
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 726061 if (top_ref == ref) {
304 422441 *mx = B[0];
305 422441 *my = B[1];
306 422441 return;
307 }
308 } else {
309 727859 const int left_ref = sl->ref_cache[list][scan8[8] - 1];
310 727859 const int16_t *const A = sl->mv_cache[list][scan8[8] - 1];
311
312 ff_tlog(h->avctx, "pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d\n",
313 left_ref, A[0], A[1], sl->mb_x, sl->mb_y, n, list);
314
315
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 727859 if (left_ref == ref) {
316 495253 *mx = A[0];
317 495253 *my = A[1];
318 495253 return;
319 }
320 }
321
322 //RARE
323 536226 pred_motion(h, sl, n, 4, list, ref, mx, my);
324 }
325
326 /**
327 * Get the directionally predicted 8x16 MV.
328 * @param n the block index
329 * @param mx the x component of the predicted motion vector
330 * @param my the y component of the predicted motion vector
331 */
332 1302684 static av_always_inline void pred_8x16_motion(const H264Context *const h,
333 H264SliceContext *sl,
334 int n, int list, int ref,
335 int *const mx, int *const my)
336 {
337
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 1302684 if (n == 0) {
338 651974 const int left_ref = sl->ref_cache[list][scan8[0] - 1];
339 651974 const int16_t *const A = sl->mv_cache[list][scan8[0] - 1];
340
341 ff_tlog(h->avctx, "pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d\n",
342 left_ref, A[0], A[1], sl->mb_x, sl->mb_y, n, list);
343
344
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 651974 if (left_ref == ref) {
345 419197 *mx = A[0];
346 419197 *my = A[1];
347 419197 return;
348 }
349 } else {
350 const int16_t *C;
351 int diagonal_ref;
352
353 650710 diagonal_ref = fetch_diagonal_mv(h, sl, &C, scan8[4], list, 2);
354
355 ff_tlog(h->avctx, "pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d\n",
356 diagonal_ref, C[0], C[1], sl->mb_x, sl->mb_y, n, list);
357
358
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 650710 if (diagonal_ref == ref) {
359 386189 *mx = C[0];
360 386189 *my = C[1];
361 386189 return;
362 }
363 }
364
365 //RARE
366 497298 pred_motion(h, sl, n, 2, list, ref, mx, my);
367 }
368
369 #define FIX_MV_MBAFF(type, refn, mvn, idx) \
370 if (FRAME_MBAFF(h)) { \
371 if (MB_FIELD(sl)) { \
372 if (!IS_INTERLACED(type)) { \
373 refn <<= 1; \
374 AV_COPY32(mvbuf[idx], mvn); \
375 mvbuf[idx][1] /= 2; \
376 mvn = mvbuf[idx]; \
377 } \
378 } else { \
379 if (IS_INTERLACED(type)) { \
380 refn >>= 1; \
381 AV_COPY32(mvbuf[idx], mvn); \
382 mvbuf[idx][1] *= 2; \
383 mvn = mvbuf[idx]; \
384 } \
385 } \
386 }
387
388 1829418 static av_always_inline void pred_pskip_motion(const H264Context *const h,
389 H264SliceContext *sl)
390 {
391 DECLARE_ALIGNED(4, static const int16_t, zeromv)[2] = { 0 };
392 DECLARE_ALIGNED(4, int16_t, mvbuf)[3][2];
393 1829418 int8_t *ref = h->cur_pic.ref_index[0];
394 1829418 int16_t(*mv)[2] = h->cur_pic.motion_val[0];
395 int top_ref, left_ref, diagonal_ref, match_count, mx, my;
396 const int16_t *A, *B, *C;
397 1829418 int b_stride = h->b_stride;
398
399 1829418 fill_rectangle(&sl->ref_cache[0][scan8[0]], 4, 4, 8, 0, 1);
400
401 /* To avoid doing an entire fill_decode_caches, we inline the relevant
402 * parts here.
403 * FIXME: this is a partial duplicate of the logic in fill_decode_caches,
404 * but it's faster this way. Is there a way to avoid this duplication?
405 */
406
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 1829418 if (USES_LIST(sl->left_type[LTOP], 0)) {
407 1732138 left_ref = ref[4 * sl->left_mb_xy[LTOP] + 1 + (sl->left_block[0] & ~1)];
408 1732138 A = mv[h->mb2b_xy[sl->left_mb_xy[LTOP]] + 3 + b_stride * sl->left_block[0]];
409
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 1732138 FIX_MV_MBAFF(sl->left_type[LTOP], left_ref, A, 0);
410
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 1732138 if (!(left_ref | AV_RN32A(A)))
411 1385760 goto zeromv;
412
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 97280 } else if (sl->left_type[LTOP]) {
413 37754 left_ref = LIST_NOT_USED;
414 37754 A = zeromv;
415 } else {
416 59526 goto zeromv;
417 }
418
419
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 384132 if (USES_LIST(sl->top_type, 0)) {
420 352473 top_ref = ref[4 * sl->top_mb_xy + 2];
421 352473 B = mv[h->mb2b_xy[sl->top_mb_xy] + 3 * b_stride];
422
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 352473 FIX_MV_MBAFF(sl->top_type, top_ref, B, 1);
423
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 352473 if (!(top_ref | AV_RN32A(B)))
424 64121 goto zeromv;
425
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 31659 } else if (sl->top_type) {
426 20612 top_ref = LIST_NOT_USED;
427 20612 B = zeromv;
428 } else {
429 11047 goto zeromv;
430 }
431
432 ff_tlog(h->avctx, "pred_pskip: (%d) (%d) at %2d %2d\n",
433 top_ref, left_ref, sl->mb_x, sl->mb_y);
434
435
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 308964 if (USES_LIST(sl->topright_type, 0)) {
436 265784 diagonal_ref = ref[4 * sl->topright_mb_xy + 2];
437 265784 C = mv[h->mb2b_xy[sl->topright_mb_xy] + 3 * b_stride];
438
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✓ Branch 2 taken 1882 times.
✓ Branch 3 taken 6192 times.
✓ Branch 4 taken 908 times.
✓ Branch 5 taken 974 times.
✓ Branch 6 taken 835 times.
✓ Branch 7 taken 5357 times.
 265784 FIX_MV_MBAFF(sl->topright_type, diagonal_ref, C, 2);
439
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✓ Branch 1 taken 22804 times.
 43180 } else if (sl->topright_type) {
440 20376 diagonal_ref = LIST_NOT_USED;
441 20376 C = zeromv;
442 } else {
443
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✓ Branch 1 taken 1087 times.
 22804 if (USES_LIST(sl->topleft_type, 0)) {
444 21717 diagonal_ref = ref[4 * sl->topleft_mb_xy + 1 +
445 21717 (sl->topleft_partition & 2)];
446 21717 C = mv[h->mb2b_xy[sl->topleft_mb_xy] + 3 + b_stride +
447 21717 (sl->topleft_partition & 2 * b_stride)];
448
8/8
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✓ Branch 2 taken 53 times.
✓ Branch 3 taken 8960 times.
✓ Branch 4 taken 9 times.
✓ Branch 5 taken 44 times.
✓ Branch 6 taken 478 times.
✓ Branch 7 taken 8482 times.
 21717 FIX_MV_MBAFF(sl->topleft_type, diagonal_ref, C, 2);
449
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 1087 } else if (sl->topleft_type) {
450 1087 diagonal_ref = LIST_NOT_USED;
451 1087 C = zeromv;
452 } else {
453 ✗ diagonal_ref = PART_NOT_AVAILABLE;
454 ✗ C = zeromv;
455 }
456 }
457
458 308964 match_count = !diagonal_ref + !top_ref + !left_ref;
459 ff_tlog(h->avctx, "pred_pskip_motion match_count=%d\n", match_count);
460
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 308964 if (match_count > 1) {
461 264788 mx = mid_pred(A[0], B[0], C[0]);
462 264788 my = mid_pred(A[1], B[1], C[1]);
463
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 44176 } else if (match_count == 1) {
464
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✓ Branch 1 taken 19370 times.
 37665 if (!left_ref) {
465 18295 mx = A[0];
466 18295 my = A[1];
467
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✓ Branch 1 taken 11015 times.
 19370 } else if (!top_ref) {
468 8355 mx = B[0];
469 8355 my = B[1];
470 } else {
471 11015 mx = C[0];
472 11015 my = C[1];
473 }
474 } else {
475 6511 mx = mid_pred(A[0], B[0], C[0]);
476 6511 my = mid_pred(A[1], B[1], C[1]);
477 }
478
479 308964 fill_rectangle(sl->mv_cache[0][scan8[0]], 4, 4, 8, pack16to32(mx, my), 4);
480 308964 return;
481
482 1520454 zeromv:
483 1520454 fill_rectangle(sl->mv_cache[0][scan8[0]], 4, 4, 8, 0, 4);
484 1520454 return;
485 }
486
487 15199355 static void fill_decode_neighbors(const H264Context *h, H264SliceContext *sl, int mb_type)
488 {
489 15199355 const int mb_xy = sl->mb_xy;
490 int topleft_xy, top_xy, topright_xy, left_xy[LEFT_MBS];
491 static const uint8_t left_block_options[4][32] = {
492 { 0, 1, 2, 3, 7, 10, 8, 11, 3 + 0 * 4, 3 + 1 * 4, 3 + 2 * 4, 3 + 3 * 4, 1 + 4 * 4, 1 + 8 * 4, 1 + 5 * 4, 1 + 9 * 4 },
493 { 2, 2, 3, 3, 8, 11, 8, 11, 3 + 2 * 4, 3 + 2 * 4, 3 + 3 * 4, 3 + 3 * 4, 1 + 5 * 4, 1 + 9 * 4, 1 + 5 * 4, 1 + 9 * 4 },
494 { 0, 0, 1, 1, 7, 10, 7, 10, 3 + 0 * 4, 3 + 0 * 4, 3 + 1 * 4, 3 + 1 * 4, 1 + 4 * 4, 1 + 8 * 4, 1 + 4 * 4, 1 + 8 * 4 },
495 { 0, 2, 0, 2, 7, 10, 7, 10, 3 + 0 * 4, 3 + 2 * 4, 3 + 0 * 4, 3 + 2 * 4, 1 + 4 * 4, 1 + 8 * 4, 1 + 4 * 4, 1 + 8 * 4 }
496 };
497
498 15199355 sl->topleft_partition = -1;
499
500 15199355 top_xy = mb_xy - (h->mb_stride << MB_FIELD(sl));
501
502 /* Wow, what a mess, why didn't they simplify the interlacing & intra
503 * stuff, I can't imagine that these complex rules are worth it. */
504
505 15199355 topleft_xy = top_xy - 1;
506 15199355 topright_xy = top_xy + 1;
507 15199355 left_xy[LBOT] = left_xy[LTOP] = mb_xy - 1;
508 15199355 sl->left_block = left_block_options[0];
509
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 15199355 if (FRAME_MBAFF(h)) {
510 2304334 const int left_mb_field_flag = IS_INTERLACED(h->cur_pic.mb_type[mb_xy - 1]);
511 2304334 const int curr_mb_field_flag = IS_INTERLACED(mb_type);
512
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 2304334 if (sl->mb_y & 1) {
513
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 1152061 if (left_mb_field_flag != curr_mb_field_flag) {
514 263657 left_xy[LBOT] = left_xy[LTOP] = mb_xy - h->mb_stride - 1;
515
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 263657 if (curr_mb_field_flag) {
516 135948 left_xy[LBOT] += h->mb_stride;
517 135948 sl->left_block = left_block_options[3];
518 } else {
519 127709 topleft_xy += h->mb_stride;
520 /* take top left mv from the middle of the mb, as opposed
521 * to all other modes which use the bottom right partition */
522 127709 sl->topleft_partition = 0;
523 127709 sl->left_block = left_block_options[1];
524 }
525 }
526 } else {
527
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 1152273 if (curr_mb_field_flag) {
528 327366 topleft_xy += h->mb_stride & (((h->cur_pic.mb_type[top_xy - 1] >> 7) & 1) - 1);
529 327366 topright_xy += h->mb_stride & (((h->cur_pic.mb_type[top_xy + 1] >> 7) & 1) - 1);
530 327366 top_xy += h->mb_stride & (((h->cur_pic.mb_type[top_xy] >> 7) & 1) - 1);
531 }
532
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 1152273 if (left_mb_field_flag != curr_mb_field_flag) {
533
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✓ Branch 1 taken 127909 times.
 263827 if (curr_mb_field_flag) {
534 135918 left_xy[LBOT] += h->mb_stride;
535 135918 sl->left_block = left_block_options[3];
536 } else {
537 127909 sl->left_block = left_block_options[2];
538 }
539 }
540 }
541 }
542
543 15199355 sl->topleft_mb_xy = topleft_xy;
544 15199355 sl->top_mb_xy = top_xy;
545 15199355 sl->topright_mb_xy = topright_xy;
546 15199355 sl->left_mb_xy[LTOP] = left_xy[LTOP];
547 15199355 sl->left_mb_xy[LBOT] = left_xy[LBOT];
548 //FIXME do we need all in the context?
549
550 15199355 sl->topleft_type = h->cur_pic.mb_type[topleft_xy];
551 15199355 sl->top_type = h->cur_pic.mb_type[top_xy];
552 15199355 sl->topright_type = h->cur_pic.mb_type[topright_xy];
553 15199355 sl->left_type[LTOP] = h->cur_pic.mb_type[left_xy[LTOP]];
554 15199355 sl->left_type[LBOT] = h->cur_pic.mb_type[left_xy[LBOT]];
555
556 if (FMO) {
557 if (h->slice_table[topleft_xy] != sl->slice_num)
558 sl->topleft_type = 0;
559 if (h->slice_table[top_xy] != sl->slice_num)
560 sl->top_type = 0;
561 if (h->slice_table[left_xy[LTOP]] != sl->slice_num)
562 sl->left_type[LTOP] = sl->left_type[LBOT] = 0;
563 } else {
564
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 15199355 if (h->slice_table[topleft_xy] != sl->slice_num) {
565 1554531 sl->topleft_type = 0;
566
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 1554531 if (h->slice_table[top_xy] != sl->slice_num)
567 1165302 sl->top_type = 0;
568
2/2
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 1554531 if (h->slice_table[left_xy[LTOP]] != sl->slice_num)
569 427028 sl->left_type[LTOP] = sl->left_type[LBOT] = 0;
570 }
571 }
572
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 15199355 if (h->slice_table[topright_xy] != sl->slice_num)
573 2356468 sl->topright_type = 0;
574 15199355 }
575
576 13364278 static void fill_decode_caches(const H264Context *h, H264SliceContext *sl, int mb_type)
577 {
578 int topleft_xy, top_xy, topright_xy, left_xy[LEFT_MBS];
579 int topleft_type, top_type, topright_type, left_type[LEFT_MBS];
580 13364278 const uint8_t *left_block = sl->left_block;
581 int i;
582 uint8_t *nnz;
583 uint8_t *nnz_cache;
584
585 13364278 topleft_xy = sl->topleft_mb_xy;
586 13364278 top_xy = sl->top_mb_xy;
587 13364278 topright_xy = sl->topright_mb_xy;
588 13364278 left_xy[LTOP] = sl->left_mb_xy[LTOP];
589 13364278 left_xy[LBOT] = sl->left_mb_xy[LBOT];
590 13364278 topleft_type = sl->topleft_type;
591 13364278 top_type = sl->top_type;
592 13364278 topright_type = sl->topright_type;
593 13364278 left_type[LTOP] = sl->left_type[LTOP];
594 13364278 left_type[LBOT] = sl->left_type[LBOT];
595
596
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 13364278 if (!IS_SKIP(mb_type)) {
597
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 10999458 if (IS_INTRA(mb_type)) {
598
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 4124053 int type_mask = h->ps.pps->constrained_intra_pred ? IS_INTRA(-1) : -1;
599 4124053 sl->topleft_samples_available =
600 4124053 sl->top_samples_available =
601 4124053 sl->left_samples_available = 0xFFFF;
602 4124053 sl->topright_samples_available = 0xEEEA;
603
604
2/2
✓ Branch 0 taken 301093 times.
✓ Branch 1 taken 3822960 times.
 4124053 if (!(top_type & type_mask)) {
605 301093 sl->topleft_samples_available = 0xB3FF;
606 301093 sl->top_samples_available = 0x33FF;
607 301093 sl->topright_samples_available = 0x26EA;
608 }
609
2/2
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 4124053 if (IS_INTERLACED(mb_type) != IS_INTERLACED(left_type[LTOP])) {
610
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 219555 if (IS_INTERLACED(mb_type)) {
611
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 114200 if (!(left_type[LTOP] & type_mask)) {
612 16696 sl->topleft_samples_available &= 0xDFFF;
613 16696 sl->left_samples_available &= 0x5FFF;
614 }
615
2/2
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 114200 if (!(left_type[LBOT] & type_mask)) {
616 16701 sl->topleft_samples_available &= 0xFF5F;
617 16701 sl->left_samples_available &= 0xFF5F;
618 }
619 } else {
620 105355 int left_typei = h->cur_pic.mb_type[left_xy[LTOP] + h->mb_stride];
621
622 av_assert2(left_xy[LTOP] == left_xy[LBOT]);
623
4/4
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 105355 if (!((left_typei & type_mask) && (left_type[LTOP] & type_mask))) {
624 53 sl->topleft_samples_available &= 0xDF5F;
625 53 sl->left_samples_available &= 0x5F5F;
626 }
627 }
628 } else {
629
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✓ Branch 0 taken 68493 times.
✓ Branch 1 taken 3836005 times.
 3904498 if (!(left_type[LTOP] & type_mask)) {
630 68493 sl->topleft_samples_available &= 0xDF5F;
631 68493 sl->left_samples_available &= 0x5F5F;
632 }
633 }
634
635
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✓ Branch 0 taken 376799 times.
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 4124053 if (!(topleft_type & type_mask))
636 376799 sl->topleft_samples_available &= 0x7FFF;
637
638
2/2
✓ Branch 0 taken 773156 times.
✓ Branch 1 taken 3350897 times.
 4124053 if (!(topright_type & type_mask))
639 773156 sl->topright_samples_available &= 0xFBFF;
640
641
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 4124053 if (IS_INTRA4x4(mb_type)) {
642
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 3070812 if (IS_INTRA4x4(top_type)) {
643 2300408 AV_COPY32(sl->intra4x4_pred_mode_cache + 4 + 8 * 0, sl->intra4x4_pred_mode + h->mb2br_xy[top_xy]);
644 } else {
645 770404 sl->intra4x4_pred_mode_cache[4 + 8 * 0] =
646 770404 sl->intra4x4_pred_mode_cache[5 + 8 * 0] =
647 770404 sl->intra4x4_pred_mode_cache[6 + 8 * 0] =
648
2/2
✓ Branch 0 taken 212010 times.
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 770404 sl->intra4x4_pred_mode_cache[7 + 8 * 0] = 2 - 3 * !(top_type & type_mask);
649 }
650
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 9212436 for (i = 0; i < 2; i++) {
651
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✓ Branch 1 taken 1213201 times.
 6141624 if (IS_INTRA4x4(left_type[LEFT(i)])) {
652 4928423 int8_t *mode = sl->intra4x4_pred_mode + h->mb2br_xy[left_xy[LEFT(i)]];
653 4928423 sl->intra4x4_pred_mode_cache[3 + 8 * 1 + 2 * 8 * i] = mode[6 - left_block[0 + 2 * i]];
654 4928423 sl->intra4x4_pred_mode_cache[3 + 8 * 2 + 2 * 8 * i] = mode[6 - left_block[1 + 2 * i]];
655 } else {
656 1213201 sl->intra4x4_pred_mode_cache[3 + 8 * 1 + 2 * 8 * i] =
657
2/2
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 1213201 sl->intra4x4_pred_mode_cache[3 + 8 * 2 + 2 * 8 * i] = 2 - 3 * !(left_type[LEFT(i)] & type_mask);
658 }
659 }
660 }
661 }
662
663 /*
664 * 0 . T T. T T T T
665 * 1 L . .L . . . .
666 * 2 L . .L . . . .
667 * 3 . T TL . . . .
668 * 4 L . .L . . . .
669 * 5 L . .. . . . .
670 */
671 /* FIXME: constraint_intra_pred & partitioning & nnz
672 * (let us hope this is just a typo in the spec) */
673 10999458 nnz_cache = sl->non_zero_count_cache;
674
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 10999458 if (top_type) {
675 10118669 nnz = h->non_zero_count[top_xy];
676 10118669 AV_COPY32(&nnz_cache[4 + 8 * 0], &nnz[4 * 3]);
677
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 10118669 if (!h->chroma_y_shift) {
678 907099 AV_COPY32(&nnz_cache[4 + 8 * 5], &nnz[4 * 7]);
679 907099 AV_COPY32(&nnz_cache[4 + 8 * 10], &nnz[4 * 11]);
680 } else {
681 9211570 AV_COPY32(&nnz_cache[4 + 8 * 5], &nnz[4 * 5]);
682 9211570 AV_COPY32(&nnz_cache[4 + 8 * 10], &nnz[4 * 9]);
683 }
684 } else {
685
2/2
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 880789 uint32_t top_empty = CABAC(h) && !IS_INTRA(mb_type) ? 0 : 0x40404040;
686 880789 AV_WN32A(&nnz_cache[4 + 8 * 0], top_empty);
687 880789 AV_WN32A(&nnz_cache[4 + 8 * 5], top_empty);
688 880789 AV_WN32A(&nnz_cache[4 + 8 * 10], top_empty);
689 }
690
691
2/2
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 32998374 for (i = 0; i < 2; i++) {
692
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✓ Branch 1 taken 634156 times.
 21998916 if (left_type[LEFT(i)]) {
693 21364760 nnz = h->non_zero_count[left_xy[LEFT(i)]];
694 21364760 nnz_cache[3 + 8 * 1 + 2 * 8 * i] = nnz[left_block[8 + 0 + 2 * i]];
695 21364760 nnz_cache[3 + 8 * 2 + 2 * 8 * i] = nnz[left_block[8 + 1 + 2 * i]];
696
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 21364760 if (CHROMA444(h)) {
697 295798 nnz_cache[3 + 8 * 6 + 2 * 8 * i] = nnz[left_block[8 + 0 + 2 * i] + 4 * 4];
698 295798 nnz_cache[3 + 8 * 7 + 2 * 8 * i] = nnz[left_block[8 + 1 + 2 * i] + 4 * 4];
699 295798 nnz_cache[3 + 8 * 11 + 2 * 8 * i] = nnz[left_block[8 + 0 + 2 * i] + 8 * 4];
700 295798 nnz_cache[3 + 8 * 12 + 2 * 8 * i] = nnz[left_block[8 + 1 + 2 * i] + 8 * 4];
701
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 21068962 } else if (CHROMA422(h)) {
702 1619188 nnz_cache[3 + 8 * 6 + 2 * 8 * i] = nnz[left_block[8 + 0 + 2 * i] - 2 + 4 * 4];
703 1619188 nnz_cache[3 + 8 * 7 + 2 * 8 * i] = nnz[left_block[8 + 1 + 2 * i] - 2 + 4 * 4];
704 1619188 nnz_cache[3 + 8 * 11 + 2 * 8 * i] = nnz[left_block[8 + 0 + 2 * i] - 2 + 8 * 4];
705 1619188 nnz_cache[3 + 8 * 12 + 2 * 8 * i] = nnz[left_block[8 + 1 + 2 * i] - 2 + 8 * 4];
706 } else {
707 19449774 nnz_cache[3 + 8 * 6 + 8 * i] = nnz[left_block[8 + 4 + 2 * i]];
708 19449774 nnz_cache[3 + 8 * 11 + 8 * i] = nnz[left_block[8 + 5 + 2 * i]];
709 }
710 } else {
711 634156 nnz_cache[3 + 8 * 1 + 2 * 8 * i] =
712 634156 nnz_cache[3 + 8 * 2 + 2 * 8 * i] =
713 634156 nnz_cache[3 + 8 * 6 + 2 * 8 * i] =
714 634156 nnz_cache[3 + 8 * 7 + 2 * 8 * i] =
715 634156 nnz_cache[3 + 8 * 11 + 2 * 8 * i] =
716
2/2
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 634156 nnz_cache[3 + 8 * 12 + 2 * 8 * i] = CABAC(h) && !IS_INTRA(mb_type) ? 0 : 64;
717 }
718 }
719
720 if (CABAC(h)) {
721 // top_cbp
722
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 7296896 if (top_type)
723 6786222 sl->top_cbp = h->cbp_table[top_xy];
724 else
725
2/2
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 510674 sl->top_cbp = IS_INTRA(mb_type) ? 0x7CF : 0x00F;
726 // left_cbp
727
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✓ Branch 1 taken 187214 times.
 7296896 if (left_type[LTOP]) {
728 7109682 sl->left_cbp = (h->cbp_table[left_xy[LTOP]] & 0x7F0) |
729 7109682 ((h->cbp_table[left_xy[LTOP]] >> (left_block[0] & (~1))) & 2) |
730 7109682 (((h->cbp_table[left_xy[LBOT]] >> (left_block[2] & (~1))) & 2) << 2);
731 } else {
732
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✓ Branch 0 taken 51814 times.
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 187214 sl->left_cbp = IS_INTRA(mb_type) ? 0x7CF : 0x00F;
733 }
734 }
735 }
736
737
6/6
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✓ Branch 4 taken 2952679 times.
✓ Branch 5 taken 64206 times.
 13364278 if (IS_INTER(mb_type) || (IS_DIRECT(mb_type) && sl->direct_spatial_mv_pred)) {
738 int list;
739 9176019 int b_stride = h->b_stride;
740
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 23833851 for (list = 0; list < sl->list_count; list++) {
741 14657832 int8_t *ref_cache = &sl->ref_cache[list][scan8[0]];
742 14657832 int8_t *ref = h->cur_pic.ref_index[list];
743 14657832 int16_t(*mv_cache)[2] = &sl->mv_cache[list][scan8[0]];
744 14657832 int16_t(*mv)[2] = h->cur_pic.motion_val[list];
745
2/2
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✓ Branch 1 taken 13279343 times.
 14657832 if (!USES_LIST(mb_type, list))
746 1378489 continue;
747 av_assert2(!(IS_DIRECT(mb_type) && !sl->direct_spatial_mv_pred));
748
749
2/2
✓ Branch 0 taken 10710055 times.
✓ Branch 1 taken 2569288 times.
 13279343 if (USES_LIST(top_type, list)) {
750 10710055 const int b_xy = h->mb2b_xy[top_xy] + 3 * b_stride;
751 10710055 AV_COPY128(mv_cache[0 - 1 * 8], mv[b_xy + 0]);
752 10710055 ref_cache[0 - 1 * 8] =
753 10710055 ref_cache[1 - 1 * 8] = ref[4 * top_xy + 2];
754 10710055 ref_cache[2 - 1 * 8] =
755 10710055 ref_cache[3 - 1 * 8] = ref[4 * top_xy + 3];
756 } else {
757 2569288 AV_ZERO128(mv_cache[0 - 1 * 8]);
758
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 2569288 AV_WN32A(&ref_cache[0 - 1 * 8],
759 ((top_type ? LIST_NOT_USED : PART_NOT_AVAILABLE) & 0xFF) * 0x01010101u);
760 }
761
762
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 13279343 if (mb_type & (MB_TYPE_16x8 | MB_TYPE_8x8)) {
763
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 8507103 for (i = 0; i < 2; i++) {
764 5671402 int cache_idx = -1 + i * 2 * 8;
765
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 5671402 if (USES_LIST(left_type[LEFT(i)], list)) {
766 4852713 const int b_xy = h->mb2b_xy[left_xy[LEFT(i)]] + 3;
767 4852713 const int b8_xy = 4 * left_xy[LEFT(i)] + 1;
768 4852713 AV_COPY32(mv_cache[cache_idx],
769 mv[b_xy + b_stride * left_block[0 + i * 2]]);
770 4852713 AV_COPY32(mv_cache[cache_idx + 8],
771 mv[b_xy + b_stride * left_block[1 + i * 2]]);
772 4852713 ref_cache[cache_idx] = ref[b8_xy + (left_block[0 + i * 2] & ~1)];
773 4852713 ref_cache[cache_idx + 8] = ref[b8_xy + (left_block[1 + i * 2] & ~1)];
774 } else {
775 818689 AV_ZERO32(mv_cache[cache_idx]);
776 818689 AV_ZERO32(mv_cache[cache_idx + 8]);
777 818689 ref_cache[cache_idx] =
778
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 818689 ref_cache[cache_idx + 8] = (left_type[LEFT(i)]) ? LIST_NOT_USED
779 : PART_NOT_AVAILABLE;
780 }
781 }
782 } else {
783
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 10443642 if (USES_LIST(left_type[LTOP], list)) {
784 8956198 const int b_xy = h->mb2b_xy[left_xy[LTOP]] + 3;
785 8956198 const int b8_xy = 4 * left_xy[LTOP] + 1;
786 8956198 AV_COPY32(mv_cache[-1], mv[b_xy + b_stride * left_block[0]]);
787 8956198 ref_cache[-1] = ref[b8_xy + (left_block[0] & ~1)];
788 } else {
789 1487444 AV_ZERO32(mv_cache[-1]);
790
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 1487444 ref_cache[-1] = left_type[LTOP] ? LIST_NOT_USED
791 : PART_NOT_AVAILABLE;
792 }
793 }
794
795
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 13279343 if (USES_LIST(topright_type, list)) {
796 9848278 const int b_xy = h->mb2b_xy[topright_xy] + 3 * b_stride;
797 9848278 AV_COPY32(mv_cache[4 - 1 * 8], mv[b_xy]);
798 9848278 ref_cache[4 - 1 * 8] = ref[4 * topright_xy + 2];
799 } else {
800 3431065 AV_ZERO32(mv_cache[4 - 1 * 8]);
801
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 3431065 ref_cache[4 - 1 * 8] = topright_type ? LIST_NOT_USED
802 : PART_NOT_AVAILABLE;
803 }
804
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 13279343 if(ref_cache[2 - 1*8] < 0 || ref_cache[4 - 1 * 8] < 0) {
805
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 4150445 if (USES_LIST(topleft_type, list)) {
806 1864491 const int b_xy = h->mb2b_xy[topleft_xy] + 3 + b_stride +
807 1864491 (sl->topleft_partition & 2 * b_stride);
808 1864491 const int b8_xy = 4 * topleft_xy + 1 + (sl->topleft_partition & 2);
809 1864491 AV_COPY32(mv_cache[-1 - 1 * 8], mv[b_xy]);
810 1864491 ref_cache[-1 - 1 * 8] = ref[b8_xy];
811 } else {
812 2285954 AV_ZERO32(mv_cache[-1 - 1 * 8]);
813
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 2285954 ref_cache[-1 - 1 * 8] = topleft_type ? LIST_NOT_USED
814 : PART_NOT_AVAILABLE;
815 }
816 }
817
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 13279343 if ((mb_type & (MB_TYPE_SKIP | MB_TYPE_DIRECT2)) && !FRAME_MBAFF(h))
819 5264174 continue;
820
821
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 8015169 if (!(mb_type & (MB_TYPE_SKIP | MB_TYPE_DIRECT2))) {
822 7373985 uint8_t(*mvd_cache)[2] = &sl->mvd_cache[list][scan8[0]];
823 7373985 uint8_t(*mvd)[2] = sl->mvd_table[list];
824 7373985 ref_cache[2 + 8 * 0] =
825 7373985 ref_cache[2 + 8 * 2] = PART_NOT_AVAILABLE;
826 7373985 AV_ZERO32(mv_cache[2 + 8 * 0]);
827 7373985 AV_ZERO32(mv_cache[2 + 8 * 2]);
828
829 if (CABAC(h)) {
830
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 4955372 if (USES_LIST(top_type, list)) {
831 3971498 const int b_xy = h->mb2br_xy[top_xy];
832 3971498 AV_COPY64(mvd_cache[0 - 1 * 8], mvd[b_xy + 0]);
833 } else {
834 983874 AV_ZERO64(mvd_cache[0 - 1 * 8]);
835 }
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 4955372 if (USES_LIST(left_type[LTOP], list)) {
837 4196005 const int b_xy = h->mb2br_xy[left_xy[LTOP]] + 6;
838 4196005 AV_COPY16(mvd_cache[-1 + 0 * 8], mvd[b_xy - left_block[0]]);
839 4196005 AV_COPY16(mvd_cache[-1 + 1 * 8], mvd[b_xy - left_block[1]]);
840 } else {
841 759367 AV_ZERO16(mvd_cache[-1 + 0 * 8]);
842 759367 AV_ZERO16(mvd_cache[-1 + 1 * 8]);
843 }
844
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 4955372 if (USES_LIST(left_type[LBOT], list)) {
845 4195489 const int b_xy = h->mb2br_xy[left_xy[LBOT]] + 6;
846 4195489 AV_COPY16(mvd_cache[-1 + 2 * 8], mvd[b_xy - left_block[2]]);
847 4195489 AV_COPY16(mvd_cache[-1 + 3 * 8], mvd[b_xy - left_block[3]]);
848 } else {
849 759883 AV_ZERO16(mvd_cache[-1 + 2 * 8]);
850 759883 AV_ZERO16(mvd_cache[-1 + 3 * 8]);
851 }
852 4955372 AV_ZERO16(mvd_cache[2 + 8 * 0]);
853 4955372 AV_ZERO16(mvd_cache[2 + 8 * 2]);
854
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 4955372 if (sl->slice_type_nos == AV_PICTURE_TYPE_B) {
855 2728331 uint8_t *direct_cache = &sl->direct_cache[scan8[0]];
856 2728331 uint8_t *direct_table = h->direct_table;
857 2728331 fill_rectangle(direct_cache, 4, 4, 8, MB_TYPE_16x16 >> 1, 1);
858
859
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 2728331 if (IS_DIRECT(top_type)) {
860 460562 AV_WN32A(&direct_cache[-1 * 8],
861 0x01010101u * (MB_TYPE_DIRECT2 >> 1));
862
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 2267769 } else if (IS_8X8(top_type)) {
863 617138 int b8_xy = 4 * top_xy;
864 617138 direct_cache[0 - 1 * 8] = direct_table[b8_xy + 2];
865 617138 direct_cache[2 - 1 * 8] = direct_table[b8_xy + 3];
866 } else {
867 1650631 AV_WN32A(&direct_cache[-1 * 8],
868 0x01010101 * (MB_TYPE_16x16 >> 1));
869 }
870
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 2728331 if (IS_DIRECT(left_type[LTOP]))
872 451269 direct_cache[-1 + 0 * 8] = MB_TYPE_DIRECT2 >> 1;
873
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 2277062 else if (IS_8X8(left_type[LTOP]))
874 653456 direct_cache[-1 + 0 * 8] = direct_table[4 * left_xy[LTOP] + 1 + (left_block[0] & ~1)];
875 else
876 1623606 direct_cache[-1 + 0 * 8] = MB_TYPE_16x16 >> 1;
877
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 2728331 if (IS_DIRECT(left_type[LBOT]))
879 450298 direct_cache[-1 + 2 * 8] = MB_TYPE_DIRECT2 >> 1;
880
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 2278033 else if (IS_8X8(left_type[LBOT]))
881 655624 direct_cache[-1 + 2 * 8] = direct_table[4 * left_xy[LBOT] + 1 + (left_block[2] & ~1)];
882 else
883 1622409 direct_cache[-1 + 2 * 8] = MB_TYPE_16x16 >> 1;
884 }
885 }
886 }
887
888 #define MAP_MVS \
889 MAP_F2F(scan8[0] - 1 - 1 * 8, topleft_type) \
890 MAP_F2F(scan8[0] + 0 - 1 * 8, top_type) \
891 MAP_F2F(scan8[0] + 1 - 1 * 8, top_type) \
892 MAP_F2F(scan8[0] + 2 - 1 * 8, top_type) \
893 MAP_F2F(scan8[0] + 3 - 1 * 8, top_type) \
894 MAP_F2F(scan8[0] + 4 - 1 * 8, topright_type) \
895 MAP_F2F(scan8[0] - 1 + 0 * 8, left_type[LTOP]) \
896 MAP_F2F(scan8[0] - 1 + 1 * 8, left_type[LTOP]) \
897 MAP_F2F(scan8[0] - 1 + 2 * 8, left_type[LBOT]) \
898 MAP_F2F(scan8[0] - 1 + 3 * 8, left_type[LBOT])
899
900
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 8015169 if (FRAME_MBAFF(h)) {
901
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 1796866 if (MB_FIELD(sl)) {
902
903 #define MAP_F2F(idx, mb_type) \
904 if (!IS_INTERLACED(mb_type) && sl->ref_cache[list][idx] >= 0) { \
905 sl->ref_cache[list][idx] *= 2; \
906 sl->mv_cache[list][idx][1] /= 2; \
907 sl->mvd_cache[list][idx][1] >>= 1; \
908 }
909
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 593039 MAP_MVS
911 } else {
912
913 #undef MAP_F2F
914 #define MAP_F2F(idx, mb_type) \
915 if (IS_INTERLACED(mb_type) && sl->ref_cache[list][idx] >= 0) { \
916 sl->ref_cache[list][idx] >>= 1; \
917 sl->mv_cache[list][idx][1] *= 2; \
918 sl->mvd_cache[list][idx][1] <<= 1; \
919 }
920
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 1203827 MAP_MVS
922 #undef MAP_F2F
923 }
924 }
925 }
926 }
927
928 13364278 sl->neighbor_transform_size = !!IS_8x8DCT(top_type) + !!IS_8x8DCT(left_type[LTOP]);
929 13364278 }
930
931 /**
932 * decodes a P_SKIP or B_SKIP macroblock
933 */
934 4330754 av_unused static void decode_mb_skip(const H264Context *h, H264SliceContext *sl)
935 {
936 4330754 const int mb_xy = sl->mb_xy;
937 4330754 int mb_type = 0;
938
939 4330754 memset(h->non_zero_count[mb_xy], 0, 48);
940
941
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 4330754 if (MB_FIELD(sl))
942 1560881 mb_type |= MB_TYPE_INTERLACED;
943
944
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 4330754 if (sl->slice_type_nos == AV_PICTURE_TYPE_B) {
945 // just for fill_caches. pred_direct_motion will set the real mb_type
946 2501336 mb_type |= MB_TYPE_L0L1 | MB_TYPE_DIRECT2 | MB_TYPE_SKIP;
947
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 2501336 if (sl->direct_spatial_mv_pred) {
948 2364820 fill_decode_neighbors(h, sl, mb_type);
949 2364820 fill_decode_caches(h, sl, mb_type); //FIXME check what is needed and what not ...
950 }
951 2501336 ff_h264_pred_direct_motion(h, sl, &mb_type);
952 2501336 mb_type |= MB_TYPE_SKIP;
953 } else {
954 1829418 mb_type |= MB_TYPE_16x16 | MB_TYPE_P0L0 | MB_TYPE_P1L0 | MB_TYPE_SKIP;
955
956 1829418 fill_decode_neighbors(h, sl, mb_type);
957 1829418 pred_pskip_motion(h, sl);
958 }
959
960 4330754 write_back_motion(h, sl, mb_type);
961 4330754 h->cur_pic.mb_type[mb_xy] = mb_type;
962 4330754 h->cur_pic.qscale_table[mb_xy] = sl->qscale;
963 4330754 h->slice_table[mb_xy] = sl->slice_num;
964 4330754 sl->prev_mb_skipped = 1;
965 4330754 }
966
967 #endif /* AVCODEC_H264_MVPRED_H */
968