FFmpeg
Loading...
Searching...
No Matches
mpegvideo_motion.c
Go to the documentation of this file.
1/*
2 * Copyright (c) 2000,2001 Fabrice Bellard
3 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
4 *
5 * 4MV & hq & B-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
6 *
7 * This file is part of FFmpeg.
8 *
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24#include "config_components.h"
25
26#include "libavutil/avassert.h"
27#include "libavutil/internal.h"
28#include "libavutil/mem_internal.h"
29
30#include "avcodec.h"
31#include "h261.h"
32#include "h263.h"
33#include "mpegutils.h"
34#include "mpegvideo.h"
35#include "mpeg4videodec.h"
36#include "qpeldsp.h"
37#include "wmv2dec.h"
38
39static inline int hpel_motion(MpegEncContext *s,
40 uint8_t *dest, uint8_t *src,
41 int src_x, int src_y,
42 const op_pixels_func *pix_op,
43 int motion_x, int motion_y)
44{
45 int dxy = 0;
46 int emu = 0;
47
48 src_x += motion_x >> 1;
49 src_y += motion_y >> 1;
50
51 /* WARNING: do no forget half pels */
52 src_x = av_clip(src_x, -16, s->width); // FIXME unneeded for emu?
53 if (src_x != s->width)
54 dxy |= motion_x & 1;
55 src_y = av_clip(src_y, -16, s->height);
56 if (src_y != s->height)
57 dxy |= (motion_y & 1) << 1;
58 src += src_y * s->linesize + src_x;
59
60 if ((unsigned)src_x >= FFMAX(s->h_edge_pos - (motion_x & 1) - 7, 0) ||
61 (unsigned)src_y >= FFMAX(s->v_edge_pos - (motion_y & 1) - 7, 0)) {
62 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, src,
63 s->linesize, s->linesize,
64 9, 9,
65 src_x, src_y,
66 s->h_edge_pos, s->v_edge_pos);
67 src = s->sc.edge_emu_buffer;
68 emu = 1;
69 }
70 pix_op[dxy](dest, src, s->linesize, 8);
71 return emu;
72}
73
74static av_always_inline
75void mpeg_motion_internal(MpegEncContext *s,
76 uint8_t *dest_y,
77 uint8_t *dest_cb,
78 uint8_t *dest_cr,
79 int field_based,
80 int bottom_field,
81 int field_select,
82 uint8_t *const *ref_picture,
83 const op_pixels_func (*pix_op)[4],
84 int motion_x,
85 int motion_y,
86 int h,
87 int is_mpeg12,
88 int is_16x8,
89 int mb_y)
90{
91 const uint8_t *ptr_y, *ptr_cb, *ptr_cr;
92 int dxy, uvdxy, mx, my, src_x, src_y,
93 uvsrc_x, uvsrc_y, v_edge_pos, block_y_half;
94 ptrdiff_t uvlinesize, linesize;
95
96 v_edge_pos = s->v_edge_pos >> field_based;
97 linesize = s->cur_pic.linesize[0] << field_based;
98 uvlinesize = s->cur_pic.linesize[1] << field_based;
99 block_y_half = (field_based | is_16x8);
100
101 dxy = ((motion_y & 1) << 1) | (motion_x & 1);
102 src_x = s->mb_x * 16 + (motion_x >> 1);
103 src_y = (mb_y << (4 - block_y_half)) + (motion_y >> 1);
104
105 if (!is_mpeg12 && s->out_format == FMT_H263) {
106 if ((s->workaround_bugs & FF_BUG_HPEL_CHROMA) && field_based) {
107 mx = (motion_x >> 1) | (motion_x & 1);
108 my = motion_y >> 1;
109 uvdxy = ((my & 1) << 1) | (mx & 1);
110 uvsrc_x = s->mb_x * 8 + (mx >> 1);
111 uvsrc_y = (mb_y << (3 - block_y_half)) + (my >> 1);
112 } else {
113 uvdxy = dxy | (motion_y & 2) | ((motion_x & 2) >> 1);
114 uvsrc_x = src_x >> 1;
115 uvsrc_y = src_y >> 1;
116 }
117 // Even chroma mv's are full pel in H261
118 } else if (!CONFIG_SMALL && !is_mpeg12 ||
119 CONFIG_SMALL && s->out_format == FMT_H261) {
120 av_assert2(s->out_format == FMT_H261);
121 mx = motion_x / 4;
122 my = motion_y / 4;
123 uvdxy = 0;
124 uvsrc_x = s->mb_x * 8 + mx;
125 uvsrc_y = mb_y * 8 + my;
126 } else {
127 av_assert2(s->out_format == FMT_MPEG1);
128 if (s->chroma_y_shift) {
129 mx = motion_x / 2;
130 my = motion_y / 2;
131 uvdxy = ((my & 1) << 1) | (mx & 1);
132 uvsrc_x = s->mb_x * 8 + (mx >> 1);
133 uvsrc_y = (mb_y << (3 - block_y_half)) + (my >> 1);
134 } else {
135 if (s->chroma_x_shift) {
136 // Chroma422
137 mx = motion_x / 2;
138 uvdxy = ((motion_y & 1) << 1) | (mx & 1);
139 uvsrc_x = s->mb_x * 8 + (mx >> 1);
140 uvsrc_y = src_y;
141 } else {
142 // Chroma444
143 uvdxy = dxy;
144 uvsrc_x = src_x;
145 uvsrc_y = src_y;
146 }
147 }
148 }
149
150 ptr_y = ref_picture[0] + src_y * linesize + src_x;
151 ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
152 ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
153
154 if ((unsigned)src_x >= FFMAX(s->h_edge_pos - (motion_x & 1) - 15 , 0) ||
155 (unsigned)src_y >= FFMAX( v_edge_pos - (motion_y & 1) - h + 1, 0)) {
156 if (is_mpeg12 || (CONFIG_SMALL &&
157 (s->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
158 s->codec_id == AV_CODEC_ID_MPEG1VIDEO))) {
159 av_log(s->avctx, AV_LOG_DEBUG,
160 "MPEG motion vector out of boundary (%d %d)\n", src_x,
161 src_y);
162 return;
163 }
164 src_y = (unsigned)src_y << field_based;
165 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr_y,
166 s->linesize, s->linesize,
167 17, 17 + field_based,
168 src_x, src_y,
169 s->h_edge_pos, s->v_edge_pos);
170 ptr_y = s->sc.edge_emu_buffer;
171 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
172 uint8_t *ubuf = s->sc.edge_emu_buffer + 18 * s->linesize;
173 uint8_t *vbuf = ubuf + 10 * s->uvlinesize;
174 if (s->workaround_bugs & FF_BUG_IEDGE)
175 vbuf -= s->uvlinesize;
176 uvsrc_y = (unsigned)uvsrc_y << field_based;
177 s->vdsp.emulated_edge_mc(ubuf, ptr_cb,
178 s->uvlinesize, s->uvlinesize,
179 9, 9 + field_based,
180 uvsrc_x, uvsrc_y,
181 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
182 s->vdsp.emulated_edge_mc(vbuf, ptr_cr,
183 s->uvlinesize, s->uvlinesize,
184 9, 9 + field_based,
185 uvsrc_x, uvsrc_y,
186 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
187 ptr_cb = ubuf;
188 ptr_cr = vbuf;
189 }
190 }
191
192 /* FIXME use this for field pix too instead of the obnoxious hack which
193 * changes picture.data */
194 if (bottom_field) {
195 dest_y += s->linesize;
196 dest_cb += s->uvlinesize;
197 dest_cr += s->uvlinesize;
198 }
199
200 if (field_select) {
201 ptr_y += s->linesize;
202 ptr_cb += s->uvlinesize;
203 ptr_cr += s->uvlinesize;
204 }
205
206 pix_op[0][dxy](dest_y, ptr_y, linesize, h);
207
208 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
209 pix_op[s->chroma_x_shift][uvdxy]
210 (dest_cb, ptr_cb, uvlinesize, h >> s->chroma_y_shift);
211 pix_op[s->chroma_x_shift][uvdxy]
212 (dest_cr, ptr_cr, uvlinesize, h >> s->chroma_y_shift);
213 }
214 if (!is_mpeg12 && (CONFIG_H261_ENCODER || CONFIG_H261_DECODER) &&
215 s->out_format == FMT_H261) {
216 ff_h261_loop_filter(s);
217 }
218}
219/* apply one mpeg motion vector to the three components */
220static void mpeg_motion(MpegEncContext *s,
221 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
222 int field_select, uint8_t *const *ref_picture,
223 const op_pixels_func (*pix_op)[4],
224 int motion_x, int motion_y, int h, int is_16x8, int mb_y)
225{
226#if !CONFIG_SMALL
227 if (s->out_format == FMT_MPEG1)
228 mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, 0, 0,
229 field_select, ref_picture, pix_op,
230 motion_x, motion_y, h, 1, is_16x8, mb_y);
231 else
232#endif
233 mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, 0, 0,
234 field_select, ref_picture, pix_op,
235 motion_x, motion_y, h, 0, is_16x8, mb_y);
236}
237
238static void mpeg_motion_field(MpegEncContext *s, uint8_t *dest_y,
239 uint8_t *dest_cb, uint8_t *dest_cr,
240 int bottom_field, int field_select,
241 uint8_t *const *ref_picture,
242 const op_pixels_func (*pix_op)[4],
243 int motion_x, int motion_y, int mb_y)
244{
245#if !CONFIG_SMALL
246 if (s->out_format == FMT_MPEG1)
247 mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, 1,
248 bottom_field, field_select, ref_picture, pix_op,
249 motion_x, motion_y, 8, 1, 0, mb_y);
250 else
251#endif
252 mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, 1,
253 bottom_field, field_select, ref_picture, pix_op,
254 motion_x, motion_y, 8, 0, 0, mb_y);
255}
256
257// FIXME: SIMDify, avg variant, 16x16 version
258static inline void put_obmc(uint8_t *dst, uint8_t *const src[5], int stride)
259{
260 int x;
261 uint8_t *const top = src[1];
262 uint8_t *const left = src[2];
263 uint8_t *const mid = src[0];
264 uint8_t *const right = src[3];
265 uint8_t *const bottom = src[4];
266#define OBMC_FILTER(x, t, l, m, r, b)\
267 dst[x]= (t*top[x] + l*left[x] + m*mid[x] + r*right[x] + b*bottom[x] + 4)>>3
268#define OBMC_FILTER4(x, t, l, m, r, b)\
269 OBMC_FILTER(x , t, l, m, r, b);\
270 OBMC_FILTER(x+1 , t, l, m, r, b);\
271 OBMC_FILTER(x +stride, t, l, m, r, b);\
272 OBMC_FILTER(x+1+stride, t, l, m, r, b);
273
274 x = 0;
275 OBMC_FILTER (x , 2, 2, 4, 0, 0);
276 OBMC_FILTER (x + 1, 2, 1, 5, 0, 0);
277 OBMC_FILTER4(x + 2, 2, 1, 5, 0, 0);
278 OBMC_FILTER4(x + 4, 2, 0, 5, 1, 0);
279 OBMC_FILTER (x + 6, 2, 0, 5, 1, 0);
280 OBMC_FILTER (x + 7, 2, 0, 4, 2, 0);
281 x += stride;
282 OBMC_FILTER (x , 1, 2, 5, 0, 0);
283 OBMC_FILTER (x + 1, 1, 2, 5, 0, 0);
284 OBMC_FILTER (x + 6, 1, 0, 5, 2, 0);
285 OBMC_FILTER (x + 7, 1, 0, 5, 2, 0);
286 x += stride;
287 OBMC_FILTER4(x , 1, 2, 5, 0, 0);
288 OBMC_FILTER4(x + 2, 1, 1, 6, 0, 0);
289 OBMC_FILTER4(x + 4, 1, 0, 6, 1, 0);
290 OBMC_FILTER4(x + 6, 1, 0, 5, 2, 0);
291 x += 2 * stride;
292 OBMC_FILTER4(x , 0, 2, 5, 0, 1);
293 OBMC_FILTER4(x + 2, 0, 1, 6, 0, 1);
294 OBMC_FILTER4(x + 4, 0, 0, 6, 1, 1);
295 OBMC_FILTER4(x + 6, 0, 0, 5, 2, 1);
296 x += 2*stride;
297 OBMC_FILTER (x , 0, 2, 5, 0, 1);
298 OBMC_FILTER (x + 1, 0, 2, 5, 0, 1);
299 OBMC_FILTER4(x + 2, 0, 1, 5, 0, 2);
300 OBMC_FILTER4(x + 4, 0, 0, 5, 1, 2);
301 OBMC_FILTER (x + 6, 0, 0, 5, 2, 1);
302 OBMC_FILTER (x + 7, 0, 0, 5, 2, 1);
303 x += stride;
304 OBMC_FILTER (x , 0, 2, 4, 0, 2);
305 OBMC_FILTER (x + 1, 0, 1, 5, 0, 2);
306 OBMC_FILTER (x + 6, 0, 0, 5, 1, 2);
307 OBMC_FILTER (x + 7, 0, 0, 4, 2, 2);
308}
309
310/* obmc for 1 8x8 luma block */
311static inline void obmc_motion(MpegEncContext *s,
312 uint8_t *dest, uint8_t *src,
313 int src_x, int src_y,
314 const op_pixels_func *pix_op,
315 int16_t mv[5][2] /* mid top left right bottom */)
316#define MID 0
317{
318 int i;
319 uint8_t *ptr[5];
320
321 av_assert2(s->quarter_sample == 0);
322
323 for (i = 0; i < 5; i++) {
324 if (i && mv[i][0] == mv[MID][0] && mv[i][1] == mv[MID][1]) {
325 ptr[i] = ptr[MID];
326 } else {
327 ptr[i] = s->sc.obmc_scratchpad + 8 * (i & 1) +
328 s->linesize * 8 * (i >> 1);
329 hpel_motion(s, ptr[i], src, src_x, src_y, pix_op,
330 mv[i][0], mv[i][1]);
331 }
332 }
333
334 put_obmc(dest, ptr, s->linesize);
335}
336
337static inline void qpel_motion(MpegEncContext *s,
338 uint8_t *dest_y,
339 uint8_t *dest_cb,
340 uint8_t *dest_cr,
341 int field_based, int bottom_field,
342 int field_select, uint8_t *const *ref_picture,
343 const op_pixels_func (*pix_op)[4],
344 const qpel_mc_func (*qpix_op)[16],
345 int motion_x, int motion_y, int h)
346{
347 const uint8_t *ptr_y, *ptr_cb, *ptr_cr;
348 int dxy, uvdxy, mx, my, src_x, src_y, uvsrc_x, uvsrc_y, v_edge_pos;
349 ptrdiff_t linesize, uvlinesize;
350
351 dxy = ((motion_y & 3) << 2) | (motion_x & 3);
352
353 src_x = s->mb_x * 16 + (motion_x >> 2);
354 src_y = s->mb_y * (16 >> field_based) + (motion_y >> 2);
355
356 v_edge_pos = s->v_edge_pos >> field_based;
357 linesize = s->linesize << field_based;
358 uvlinesize = s->uvlinesize << field_based;
359
360 if (field_based) {
361 mx = motion_x / 2;
362 my = motion_y >> 1;
363 } else if (s->workaround_bugs & FF_BUG_QPEL_CHROMA2) {
364 static const int rtab[8] = { 0, 0, 1, 1, 0, 0, 0, 1 };
365 mx = (motion_x >> 1) + rtab[motion_x & 7];
366 my = (motion_y >> 1) + rtab[motion_y & 7];
367 } else if (s->workaround_bugs & FF_BUG_QPEL_CHROMA) {
368 mx = (motion_x >> 1) | (motion_x & 1);
369 my = (motion_y >> 1) | (motion_y & 1);
370 } else {
371 mx = motion_x / 2;
372 my = motion_y / 2;
373 }
374 mx = (mx >> 1) | (mx & 1);
375 my = (my >> 1) | (my & 1);
376
377 uvdxy = (mx & 1) | ((my & 1) << 1);
378 mx >>= 1;
379 my >>= 1;
380
381 uvsrc_x = s->mb_x * 8 + mx;
382 uvsrc_y = s->mb_y * (8 >> field_based) + my;
383
384 ptr_y = ref_picture[0] + src_y * linesize + src_x;
385 ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
386 ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
387
388 if ((unsigned)src_x >= FFMAX(s->h_edge_pos - (motion_x & 3) - 15 , 0) ||
389 (unsigned)src_y >= FFMAX( v_edge_pos - (motion_y & 3) - h + 1, 0)) {
390 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr_y,
391 s->linesize, s->linesize,
392 17, 17 + field_based,
393 src_x, src_y * (1 << field_based),
394 s->h_edge_pos, s->v_edge_pos);
395 ptr_y = s->sc.edge_emu_buffer;
396 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
397 uint8_t *ubuf = s->sc.edge_emu_buffer + 18 * s->linesize;
398 uint8_t *vbuf = ubuf + 10 * s->uvlinesize;
399 if (s->workaround_bugs & FF_BUG_IEDGE)
400 vbuf -= s->uvlinesize;
401 s->vdsp.emulated_edge_mc(ubuf, ptr_cb,
402 s->uvlinesize, s->uvlinesize,
403 9, 9 + field_based,
404 uvsrc_x, uvsrc_y * (1 << field_based),
405 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
406 s->vdsp.emulated_edge_mc(vbuf, ptr_cr,
407 s->uvlinesize, s->uvlinesize,
408 9, 9 + field_based,
409 uvsrc_x, uvsrc_y * (1 << field_based),
410 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
411 ptr_cb = ubuf;
412 ptr_cr = vbuf;
413 }
414 }
415
416 if (!field_based)
417 qpix_op[0][dxy](dest_y, ptr_y, linesize);
418 else {
419 if (bottom_field) {
420 dest_y += s->linesize;
421 dest_cb += s->uvlinesize;
422 dest_cr += s->uvlinesize;
423 }
424
425 if (field_select) {
426 ptr_y += s->linesize;
427 ptr_cb += s->uvlinesize;
428 ptr_cr += s->uvlinesize;
429 }
430 // damn interlaced mode
431 // FIXME boundary mirroring is not exactly correct here
432 qpix_op[1][dxy](dest_y, ptr_y, linesize);
433 qpix_op[1][dxy](dest_y + 8, ptr_y + 8, linesize);
434 }
435 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
436 pix_op[1][uvdxy](dest_cr, ptr_cr, uvlinesize, h >> 1);
437 pix_op[1][uvdxy](dest_cb, ptr_cb, uvlinesize, h >> 1);
438 }
439}
440
441/**
442 * H.263 chroma 4mv motion compensation.
443 */
444static void chroma_4mv_motion(MpegEncContext *s,
445 uint8_t *dest_cb, uint8_t *dest_cr,
446 uint8_t *const *ref_picture,
447 const op_pixels_func *pix_op,
448 int mx, int my)
449{
450 const uint8_t *ptr;
451 int src_x, src_y, dxy, emu = 0;
452 ptrdiff_t offset;
453
454 /* In case of 8X8, we construct a single chroma motion vector
455 * with a special rounding */
456 mx = ff_h263_round_chroma(mx);
457 my = ff_h263_round_chroma(my);
458
459 dxy = ((my & 1) << 1) | (mx & 1);
460 mx >>= 1;
461 my >>= 1;
462
463 src_x = s->mb_x * 8 + mx;
464 src_y = s->mb_y * 8 + my;
465 src_x = av_clip(src_x, -8, (s->width >> 1));
466 if (src_x == (s->width >> 1))
467 dxy &= ~1;
468 src_y = av_clip(src_y, -8, (s->height >> 1));
469 if (src_y == (s->height >> 1))
470 dxy &= ~2;
471
472 offset = src_y * s->uvlinesize + src_x;
473 ptr = ref_picture[1] + offset;
474 if ((unsigned)src_x >= FFMAX((s->h_edge_pos >> 1) - (dxy & 1) - 7, 0) ||
475 (unsigned)src_y >= FFMAX((s->v_edge_pos >> 1) - (dxy >> 1) - 7, 0)) {
476 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
477 s->uvlinesize, s->uvlinesize,
478 9, 9, src_x, src_y,
479 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
480 ptr = s->sc.edge_emu_buffer;
481 emu = 1;
482 }
483 pix_op[dxy](dest_cb, ptr, s->uvlinesize, 8);
484
485 ptr = ref_picture[2] + offset;
486 if (emu) {
487 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
488 s->uvlinesize, s->uvlinesize,
489 9, 9, src_x, src_y,
490 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
491 ptr = s->sc.edge_emu_buffer;
492 }
493 pix_op[dxy](dest_cr, ptr, s->uvlinesize, 8);
494}
495
496static inline void prefetch_motion(MpegEncContext *s, uint8_t *const *pix, int dir)
497{
498 /* fetch pixels for estimated mv 4 macroblocks ahead
499 * optimized for 64byte cache lines */
500 const int shift = s->quarter_sample ? 2 : 1;
501 const int mx = (s->mv[dir][0][0] >> shift) + 16 * s->mb_x + 8;
502 const int my = (s->mv[dir][0][1] >> shift) + 16 * s->mb_y;
503 int off = mx + (my + (s->mb_x & 3) * 4) * s->linesize + 64;
504
505 s->vdsp.prefetch(pix[0] + off, s->linesize, 4);
506 off = (mx >> 1) + ((my >> 1) + (s->mb_x & 7)) * s->uvlinesize + 64;
507 s->vdsp.prefetch(pix[1] + off, pix[2] - pix[1], 2);
508}
509
510static inline void apply_obmc(MpegEncContext *s,
511 uint8_t *dest_y,
512 uint8_t *dest_cb,
513 uint8_t *dest_cr,
514 uint8_t *const *ref_picture,
515 const op_pixels_func (*pix_op)[4])
516{
517 LOCAL_ALIGNED_8(int16_t, mv_cache, [4], [4][2]);
518 const MPVWorkPicture *cur_frame = &s->cur_pic;
519 int mb_x = s->mb_x;
520 int mb_y = s->mb_y;
521 const int xy = mb_x + mb_y * s->mb_stride;
522 const int mot_stride = s->b8_stride;
523 const int mot_xy = mb_x * 2 + mb_y * 2 * mot_stride;
524 int mx, my, i;
525
526 av_assert2(!s->mb_skipped);
527
528 AV_COPY32(mv_cache[1][1], cur_frame->motion_val[0][mot_xy]);
529 AV_COPY32(mv_cache[1][2], cur_frame->motion_val[0][mot_xy + 1]);
530
531 AV_COPY32(mv_cache[2][1],
532 cur_frame->motion_val[0][mot_xy + mot_stride]);
533 AV_COPY32(mv_cache[2][2],
534 cur_frame->motion_val[0][mot_xy + mot_stride + 1]);
535
536 AV_COPY32(mv_cache[3][1],
537 cur_frame->motion_val[0][mot_xy + mot_stride]);
538 AV_COPY32(mv_cache[3][2],
539 cur_frame->motion_val[0][mot_xy + mot_stride + 1]);
540
541 if (mb_y == 0 || IS_INTRA(cur_frame->mb_type[xy - s->mb_stride])) {
542 AV_COPY32(mv_cache[0][1], mv_cache[1][1]);
543 AV_COPY32(mv_cache[0][2], mv_cache[1][2]);
544 } else {
545 AV_COPY32(mv_cache[0][1],
546 cur_frame->motion_val[0][mot_xy - mot_stride]);
547 AV_COPY32(mv_cache[0][2],
548 cur_frame->motion_val[0][mot_xy - mot_stride + 1]);
549 }
550
551 if (mb_x == 0 || IS_INTRA(cur_frame->mb_type[xy - 1])) {
552 AV_COPY32(mv_cache[1][0], mv_cache[1][1]);
553 AV_COPY32(mv_cache[2][0], mv_cache[2][1]);
554 } else {
555 AV_COPY32(mv_cache[1][0], cur_frame->motion_val[0][mot_xy - 1]);
556 AV_COPY32(mv_cache[2][0],
557 cur_frame->motion_val[0][mot_xy - 1 + mot_stride]);
558 }
559
560 if (mb_x + 1 >= s->mb_width || IS_INTRA(cur_frame->mb_type[xy + 1])) {
561 AV_COPY32(mv_cache[1][3], mv_cache[1][2]);
562 AV_COPY32(mv_cache[2][3], mv_cache[2][2]);
563 } else {
564 AV_COPY32(mv_cache[1][3], cur_frame->motion_val[0][mot_xy + 2]);
565 AV_COPY32(mv_cache[2][3],
566 cur_frame->motion_val[0][mot_xy + 2 + mot_stride]);
567 }
568
569 mx = 0;
570 my = 0;
571 for (i = 0; i < 4; i++) {
572 const int x = (i & 1) + 1;
573 const int y = (i >> 1) + 1;
574 int16_t mv[5][2] = {
575 { mv_cache[y][x][0], mv_cache[y][x][1] },
576 { mv_cache[y - 1][x][0], mv_cache[y - 1][x][1] },
577 { mv_cache[y][x - 1][0], mv_cache[y][x - 1][1] },
578 { mv_cache[y][x + 1][0], mv_cache[y][x + 1][1] },
579 { mv_cache[y + 1][x][0], mv_cache[y + 1][x][1] }
580 };
581 // FIXME cleanup
582 obmc_motion(s, dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize,
583 ref_picture[0],
584 mb_x * 16 + (i & 1) * 8, mb_y * 16 + (i >> 1) * 8,
585 pix_op[1],
586 mv);
587
588 mx += mv[0][0];
589 my += mv[0][1];
590 }
591 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY))
592 chroma_4mv_motion(s, dest_cb, dest_cr,
593 ref_picture, pix_op[1],
594 mx, my);
595}
596
597static inline void apply_8x8(MpegEncContext *s,
598 uint8_t *dest_y,
599 uint8_t *dest_cb,
600 uint8_t *dest_cr,
601 int dir,
602 uint8_t *const *ref_picture,
603 const qpel_mc_func (*qpix_op)[16],
604 const op_pixels_func (*pix_op)[4])
605{
606 int dxy, mx, my, src_x, src_y;
607 int i;
608 int mb_x = s->mb_x;
609 int mb_y = s->mb_y;
610 uint8_t *dest;
611 const uint8_t *ptr;
612
613 mx = 0;
614 my = 0;
615 if (s->quarter_sample) {
616 for (i = 0; i < 4; i++) {
617 int motion_x = s->mv[dir][i][0];
618 int motion_y = s->mv[dir][i][1];
619
620 dxy = ((motion_y & 3) << 2) | (motion_x & 3);
621 src_x = mb_x * 16 + (motion_x >> 2) + (i & 1) * 8;
622 src_y = mb_y * 16 + (motion_y >> 2) + (i >> 1) * 8;
623
624 /* WARNING: do no forget half pels */
625 src_x = av_clip(src_x, -16, s->width);
626 if (src_x == s->width)
627 dxy &= ~3;
628 src_y = av_clip(src_y, -16, s->height);
629 if (src_y == s->height)
630 dxy &= ~12;
631
632 ptr = ref_picture[0] + (src_y * s->linesize) + (src_x);
633 if ((unsigned)src_x >= FFMAX(s->h_edge_pos - (motion_x & 3) - 7, 0) ||
634 (unsigned)src_y >= FFMAX(s->v_edge_pos - (motion_y & 3) - 7, 0)) {
635 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
636 s->linesize, s->linesize,
637 9, 9,
638 src_x, src_y,
639 s->h_edge_pos,
640 s->v_edge_pos);
641 ptr = s->sc.edge_emu_buffer;
642 }
643 dest = dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize;
644 qpix_op[1][dxy](dest, ptr, s->linesize);
645
646 mx += s->mv[dir][i][0] / 2;
647 my += s->mv[dir][i][1] / 2;
648 }
649 } else {
650 for (i = 0; i < 4; i++) {
651 hpel_motion(s,
652 dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize,
653 ref_picture[0],
654 mb_x * 16 + (i & 1) * 8,
655 mb_y * 16 + (i >> 1) * 8,
656 pix_op[1],
657 s->mv[dir][i][0],
658 s->mv[dir][i][1]);
659
660 mx += s->mv[dir][i][0];
661 my += s->mv[dir][i][1];
662 }
663 }
664
665 if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY))
666 chroma_4mv_motion(s, dest_cb, dest_cr,
667 ref_picture, pix_op[1], mx, my);
668}
669
670/**
671 * motion compensation of a single macroblock
672 * @param s context
673 * @param dest_y luma destination pointer
674 * @param dest_cb chroma cb/u destination pointer
675 * @param dest_cr chroma cr/v destination pointer
676 * @param dir direction (0->forward, 1->backward)
677 * @param ref_picture array[3] of pointers to the 3 planes of the reference picture
678 * @param pix_op halfpel motion compensation function (average or put normally)
679 * @param qpix_op qpel motion compensation function (average or put normally)
680 * the motion vectors are taken from s->mv and the MV type from s->mv_type
681 */
682static av_always_inline void mpv_motion_internal(MpegEncContext *s,
683 uint8_t *dest_y,
684 uint8_t *dest_cb,
685 uint8_t *dest_cr,
686 int dir,
687 uint8_t *const *ref_picture,
688 const op_pixels_func (*pix_op)[4],
689 const qpel_mc_func (*qpix_op)[16],
690 int is_mpeg12)
691{
692 int i;
693 int mb_y = s->mb_y;
694
695 if (!is_mpeg12 && s->obmc && s->pict_type != AV_PICTURE_TYPE_B) {
696 apply_obmc(s, dest_y, dest_cb, dest_cr, ref_picture, pix_op);
697 return;
698 }
699
700 switch (s->mv_type) {
701 case MV_TYPE_16X16:
702 if (CONFIG_MPEG4_DECODER && !is_mpeg12 && s->mcsel) {
703 ff_mpeg4_mcsel_motion(s, dest_y, dest_cb, dest_cr, ref_picture);
704 } else if (!is_mpeg12 && s->quarter_sample) {
705 qpel_motion(s, dest_y, dest_cb, dest_cr,
706 0, 0, 0,
707 ref_picture, pix_op, qpix_op,
708 s->mv[dir][0][0], s->mv[dir][0][1], 16);
709#if CONFIG_WMV2_DECODER
710 } else if (!is_mpeg12 && s->mspel && s->codec_id == AV_CODEC_ID_WMV2) {
711 av_assert2(av_codec_is_decoder(s->avctx->codec));
712 ff_mspel_motion(s, dest_y, dest_cb, dest_cr,
713 ref_picture, pix_op,
714 s->mv[dir][0][0], s->mv[dir][0][1], 16);
715#endif
716 } else {
717 mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,
718 ref_picture, pix_op,
719 s->mv[dir][0][0], s->mv[dir][0][1], 16, 0, mb_y);
720 }
721 break;
722 case MV_TYPE_8X8:
723 if (!is_mpeg12)
724 apply_8x8(s, dest_y, dest_cb, dest_cr,
725 dir, ref_picture, qpix_op, pix_op);
726 break;
727 case MV_TYPE_FIELD:
728 // Only MPEG-1/2 can have a picture_structure != PICT_FRAME here.
729 if (!CONFIG_SMALL)
730 av_assert2(is_mpeg12 || s->picture_structure == PICT_FRAME);
731 if ((!CONFIG_SMALL && !is_mpeg12) ||
732 s->picture_structure == PICT_FRAME) {
733 if (!is_mpeg12 && s->quarter_sample) {
734 for (i = 0; i < 2; i++)
735 qpel_motion(s, dest_y, dest_cb, dest_cr,
736 1, i, s->field_select[dir][i],
737 ref_picture, pix_op, qpix_op,
738 s->mv[dir][i][0], s->mv[dir][i][1], 8);
739 } else {
740 /* top field */
741 mpeg_motion_field(s, dest_y, dest_cb, dest_cr,
742 0, s->field_select[dir][0],
743 ref_picture, pix_op,
744 s->mv[dir][0][0], s->mv[dir][0][1], mb_y);
745 /* bottom field */
746 mpeg_motion_field(s, dest_y, dest_cb, dest_cr,
747 1, s->field_select[dir][1],
748 ref_picture, pix_op,
749 s->mv[dir][1][0], s->mv[dir][1][1], mb_y);
750 }
751 } else {
752 av_assert2(s->out_format == FMT_MPEG1);
753 if (s->picture_structure != s->field_select[dir][0] + 1 &&
754 s->pict_type != AV_PICTURE_TYPE_B && !s->first_field) {
755 ref_picture = s->cur_pic.ptr->f->data;
756 }
757
758 mpeg_motion(s, dest_y, dest_cb, dest_cr,
759 s->field_select[dir][0],
760 ref_picture, pix_op,
761 s->mv[dir][0][0], s->mv[dir][0][1], 16, 0, mb_y >> 1);
762 }
763 break;
764 case MV_TYPE_16X8:
765 if (CONFIG_SMALL || is_mpeg12) {
766 for (i = 0; i < 2; i++) {
767 uint8_t *const *ref2picture;
768
769 if (s->picture_structure == s->field_select[dir][i] + 1 ||
770 s->pict_type == AV_PICTURE_TYPE_B || s->first_field) {
771 ref2picture = ref_picture;
772 } else {
773 ref2picture = s->cur_pic.ptr->f->data;
774 }
775
776 mpeg_motion(s, dest_y, dest_cb, dest_cr,
777 s->field_select[dir][i],
778 ref2picture, pix_op,
779 s->mv[dir][i][0], s->mv[dir][i][1],
780 8, 1, (mb_y & ~1) + i);
781
782 dest_y += 16 * s->linesize;
783 dest_cb += (16 >> s->chroma_y_shift) * s->uvlinesize;
784 dest_cr += (16 >> s->chroma_y_shift) * s->uvlinesize;
785 }
786 break;
787 }
788 av_unreachable("MV_TYPE_16X8 is only used by MPEG-1/2");
789 case MV_TYPE_DMV:
790 if (CONFIG_SMALL || is_mpeg12) {
791 if (s->picture_structure == PICT_FRAME) {
792 for (i = 0; i < 2; i++) {
793 for (int j = 0; j < 2; j++)
794 mpeg_motion_field(s, dest_y, dest_cb, dest_cr,
795 j, j ^ i, ref_picture, pix_op,
796 s->mv[dir][2 * i + j][0],
797 s->mv[dir][2 * i + j][1], mb_y);
798 pix_op = s->hdsp.avg_pixels_tab;
799 }
800 } else {
801 for (i = 0; i < 2; i++) {
802 mpeg_motion(s, dest_y, dest_cb, dest_cr,
803 s->picture_structure != i + 1,
804 ref_picture, pix_op,
805 s->mv[dir][2 * i][0], s->mv[dir][2 * i][1],
806 16, 0, mb_y >> 1);
807
808 // after put we make avg of the same block
809 pix_op = s->hdsp.avg_pixels_tab;
810
811 /* opposite parity is always in the same frame if this is
812 * second field */
813 if (!s->first_field)
814 ref_picture = s->cur_pic.ptr->f->data;
815 }
816 }
817 break;
818 }
819 av_unreachable("MV_TYPE_DMV is only used by MPEG-1/2");
820 default:
821 av_unreachable("No other mpegvideo MV types exist");
822 }
823}
824
825void ff_mpv_motion(MpegEncContext *s,
826 uint8_t *dest_y, uint8_t *dest_cb,
827 uint8_t *dest_cr, int dir,
828 uint8_t *const *ref_picture,
829 const op_pixels_func (*pix_op)[4],
830 const qpel_mc_func (*qpix_op)[16])
831{
832 av_assert2(s->out_format == FMT_MPEG1 ||
833 s->out_format == FMT_H263 ||
834 s->out_format == FMT_H261);
835 prefetch_motion(s, ref_picture, dir);
836
837#if !CONFIG_SMALL
838 if (s->out_format == FMT_MPEG1)
839 mpv_motion_internal(s, dest_y, dest_cb, dest_cr, dir,
840 ref_picture, pix_op, qpix_op, 1);
841 else
842#endif
843 mpv_motion_internal(s, dest_y, dest_cb, dest_cr, dir,
844 ref_picture, pix_op, qpix_op, 0);
845}
my
uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t intptr_t my
Definition dsp.h:57
mx
uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t mx
Definition dsp.h:57
dst
uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t intptr_t int int16_t * dst
Definition dsp.h:87
avassert.h
simple assert() macros that are a bit more flexible than ISO C assert().
av_assert2
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition avassert.h:68
av_unreachable
#define av_unreachable(msg)
Asserts that are used as compiler optimization hints depending upon ASSERT_LEVEL and NBDEBUG.
Definition avassert.h:109
avcodec.h
Libavcodec external API header.
FF_BUG_HPEL_CHROMA
#define FF_BUG_HPEL_CHROMA
Definition avcodec.h:1356
FF_BUG_QPEL_CHROMA2
#define FF_BUG_QPEL_CHROMA2
Definition avcodec.h:1353
FF_BUG_IEDGE
#define FF_BUG_IEDGE
Definition avcodec.h:1360
FF_BUG_QPEL_CHROMA
#define FF_BUG_QPEL_CHROMA
Definition avcodec.h:1351
left
static int BS_FUNC left(const BSCTX *bc)
Return the number of the bits left in a buffer.
Definition bitstream_template.h:170
i
#define i(width, name, range_min, range_max)
Definition cbs_h264.c:63
s
#define s(width, name)
Definition cbs_vp9.c:198
av_clip
#define av_clip
Definition common.h:100
av_codec_is_decoder
int av_codec_is_decoder(const AVCodec *codec)
Definition utils.c:85
AV_CODEC_FLAG_GRAY
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition avcodec.h:302
AV_CODEC_ID_WMV2
@ AV_CODEC_ID_WMV2
Definition codec_id.h:68
AV_CODEC_ID_MPEG1VIDEO
@ AV_CODEC_ID_MPEG1VIDEO
Definition codec_id.h:51
AV_CODEC_ID_MPEG2VIDEO
@ AV_CODEC_ID_MPEG2VIDEO
preferred ID for MPEG-1/2 video decoding
Definition codec_id.h:52
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition log.h:231
AV_PICTURE_TYPE_B
@ AV_PICTURE_TYPE_B
Bi-dir predicted.
Definition avutil.h:280
ff_h261_loop_filter
void ff_h261_loop_filter(MpegEncContext *s)
Definition h261.c:61
h261.h
H.261 codec.
ff_h263_round_chroma
static int ff_h263_round_chroma(int x)
Definition h263.h:30
op_pixels_func
void(* op_pixels_func)(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int h)
Average and put pixel Widths can be 16, 8, 4 or 2.
Definition hpeldsp.h:39
AV_COPY32
#define AV_COPY32(d, s)
Definition intreadwrite.h:634
offset
unsigned offset
Definition libaomenc.c:763
mv
static const int8_t mv[256][2]
Definition 4xm.c:81
shift
static int shift(int a, int b)
Definition bonk.c:261
av_always_inline
#define av_always_inline
Definition attributes.h:72
internal.h
common internal API header
FFMAX
#define FFMAX(a, b)
Definition macros.h:47
mem_internal.h
LOCAL_ALIGNED_8
#define LOCAL_ALIGNED_8(t, v,...)
Definition mem_internal.h:128
ff_mpeg4_mcsel_motion
void ff_mpeg4_mcsel_motion(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, uint8_t *const *ref_picture)
Definition mpeg4videodec.c:245
PICT_FRAME
#define PICT_FRAME
Definition mpegutils.h:33
mpegvideo.h
mpegvideo header.
MV_TYPE_16X8
#define MV_TYPE_16X8
2 vectors, one per 16x8 block
Definition mpegvideo.h:174
MV_TYPE_DMV
#define MV_TYPE_DMV
2 vectors, special mpeg2 Dual Prime Vectors
Definition mpegvideo.h:176
MV_TYPE_FIELD
#define MV_TYPE_FIELD
2 vectors, one per field
Definition mpegvideo.h:175
MV_TYPE_8X8
#define MV_TYPE_8X8
4 vectors (H.263, MPEG-4 4MV)
Definition mpegvideo.h:173
MV_TYPE_16X16
#define MV_TYPE_16X16
1 vector for the whole mb
Definition mpegvideo.h:172
FMT_H261
@ FMT_H261
Definition mpegvideo.h:56
FMT_MPEG1
@ FMT_MPEG1
Definition mpegvideo.h:55
FMT_H263
@ FMT_H263
Definition mpegvideo.h:57
MID
#define MID
hpel_motion
static int hpel_motion(MpegEncContext *s, uint8_t *dest, uint8_t *src, int src_x, int src_y, const op_pixels_func *pix_op, int motion_x, int motion_y)
Definition mpegvideo_motion.c:39
mpeg_motion_field
static void mpeg_motion_field(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int bottom_field, int field_select, uint8_t *const *ref_picture, const op_pixels_func(*pix_op)[4], int motion_x, int motion_y, int mb_y)
Definition mpegvideo_motion.c:238
ff_mpv_motion
void ff_mpv_motion(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int dir, uint8_t *const *ref_picture, const op_pixels_func(*pix_op)[4], const qpel_mc_func(*qpix_op)[16])
Definition mpegvideo_motion.c:825
mpv_motion_internal
static av_always_inline void mpv_motion_internal(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int dir, uint8_t *const *ref_picture, const op_pixels_func(*pix_op)[4], const qpel_mc_func(*qpix_op)[16], int is_mpeg12)
motion compensation of a single macroblock
Definition mpegvideo_motion.c:682
mpeg_motion_internal
static av_always_inline void mpeg_motion_internal(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int field_based, int bottom_field, int field_select, uint8_t *const *ref_picture, const op_pixels_func(*pix_op)[4], int motion_x, int motion_y, int h, int is_mpeg12, int is_16x8, int mb_y)
Definition mpegvideo_motion.c:75
chroma_4mv_motion
static void chroma_4mv_motion(MpegEncContext *s, uint8_t *dest_cb, uint8_t *dest_cr, uint8_t *const *ref_picture, const op_pixels_func *pix_op, int mx, int my)
H.263 chroma 4mv motion compensation.
Definition mpegvideo_motion.c:444
OBMC_FILTER4
#define OBMC_FILTER4(x, t, l, m, r, b)
apply_8x8
static void apply_8x8(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int dir, uint8_t *const *ref_picture, const qpel_mc_func(*qpix_op)[16], const op_pixels_func(*pix_op)[4])
Definition mpegvideo_motion.c:597
put_obmc
static void put_obmc(uint8_t *dst, uint8_t *const src[5], int stride)
Definition mpegvideo_motion.c:258
qpel_motion
static void qpel_motion(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int field_based, int bottom_field, int field_select, uint8_t *const *ref_picture, const op_pixels_func(*pix_op)[4], const qpel_mc_func(*qpix_op)[16], int motion_x, int motion_y, int h)
Definition mpegvideo_motion.c:337
obmc_motion
static void obmc_motion(MpegEncContext *s, uint8_t *dest, uint8_t *src, int src_x, int src_y, const op_pixels_func *pix_op, int16_t mv[5][2])
Definition mpegvideo_motion.c:311
mpeg_motion
static void mpeg_motion(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int field_select, uint8_t *const *ref_picture, const op_pixels_func(*pix_op)[4], int motion_x, int motion_y, int h, int is_16x8, int mb_y)
Definition mpegvideo_motion.c:220
apply_obmc
static void apply_obmc(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, uint8_t *const *ref_picture, const op_pixels_func(*pix_op)[4])
Definition mpegvideo_motion.c:510
OBMC_FILTER
#define OBMC_FILTER(x, t, l, m, r, b)
prefetch_motion
static void prefetch_motion(MpegEncContext *s, uint8_t *const *pix, int dir)
Definition mpegvideo_motion.c:496
pix
enum AVPixelFormat pix
Definition ohcodec.c:55
IS_INTRA
#define IS_INTRA(x, y)
qpeldsp.h
quarterpel DSP functions
qpel_mc_func
void(* qpel_mc_func)(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)
Definition qpeldsp.h:65
MPVWorkPicture::mb_type
uint32_t * mb_type
types and macros are defined in mpegutils.h
Definition mpegpicture.h:105
MPVWorkPicture::motion_val
int16_t(*[2] motion_val)[2]
Definition mpegpicture.h:103
MpegEncContext
MpegEncContext.
Definition mpegvideo.h:67
stride
#define stride
Definition h264pred_template.c:536
av_log
#define av_log(a,...)
Definition tableprint_vlc.h:27
src
#define src
Definition vp8dsp.c:248
h
h
Definition vp9dsp_template.c:2070
ff_mspel_motion
void ff_mspel_motion(MPVContext *const s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, uint8_t *const *ref_picture, const op_pixels_func(*pix_op)[4], int motion_x, int motion_y, int h)
Definition wmv2dec.c:182
Generated on Tue Aug 18 2026 20:20:56 for FFmpeg by doxygen 1.13.2