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Imported Debian version 2.4.3~trusty1
[deb_ffmpeg.git] / ffmpeg / libavcodec / mpegvideo_motion.c
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2ba45a60
DM		 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 <string.h>
25
26#include "libavutil/avassert.h"
27#include "libavutil/internal.h"
28#include "avcodec.h"
29#include "h261.h"
30#include "mpegutils.h"
31#include "mpegvideo.h"
32#include "mjpegenc.h"
33#include "msmpeg4.h"
34#include "qpeldsp.h"
35#include <limits.h>
36
37static void gmc1_motion(MpegEncContext *s,
38 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
39 uint8_t **ref_picture)
40{
41 uint8_t *ptr;
42 int src_x, src_y, motion_x, motion_y;
43 ptrdiff_t offset, linesize, uvlinesize;
44 int emu = 0;
45
46 motion_x = s->sprite_offset[0][0];
47 motion_y = s->sprite_offset[0][1];
48 src_x = s->mb_x * 16 + (motion_x >> (s->sprite_warping_accuracy + 1));
49 src_y = s->mb_y * 16 + (motion_y >> (s->sprite_warping_accuracy + 1));
50 motion_x <<= (3 - s->sprite_warping_accuracy);
51 motion_y <<= (3 - s->sprite_warping_accuracy);
52 src_x = av_clip(src_x, -16, s->width);
53 if (src_x == s->width)
54 motion_x = 0;
55 src_y = av_clip(src_y, -16, s->height);
56 if (src_y == s->height)
57 motion_y = 0;
58
59 linesize = s->linesize;
60 uvlinesize = s->uvlinesize;
61
62 ptr = ref_picture[0] + src_y * linesize + src_x;
63
64 if ((unsigned)src_x >= FFMAX(s->h_edge_pos - 17, 0) ||
65 (unsigned)src_y >= FFMAX(s->v_edge_pos - 17, 0)) {
66 s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr,
67 linesize, linesize,
68 17, 17,
69 src_x, src_y,
70 s->h_edge_pos, s->v_edge_pos);
71 ptr = s->edge_emu_buffer;
72 }
73
74 if ((motion_x | motion_y) & 7) {
75 s->mdsp.gmc1(dest_y, ptr, linesize, 16,
76 motion_x & 15, motion_y & 15, 128 - s->no_rounding);
77 s->mdsp.gmc1(dest_y + 8, ptr + 8, linesize, 16,
78 motion_x & 15, motion_y & 15, 128 - s->no_rounding);
79 } else {
80 int dxy;
81
82 dxy = ((motion_x >> 3) & 1) | ((motion_y >> 2) & 2);
83 if (s->no_rounding) {
84 s->hdsp.put_no_rnd_pixels_tab[0][dxy](dest_y, ptr, linesize, 16);
85 } else {
86 s->hdsp.put_pixels_tab[0][dxy](dest_y, ptr, linesize, 16);
87 }
88 }
89
90 if (CONFIG_GRAY && s->flags & CODEC_FLAG_GRAY)
91 return;
92
93 motion_x = s->sprite_offset[1][0];
94 motion_y = s->sprite_offset[1][1];
95 src_x = s->mb_x * 8 + (motion_x >> (s->sprite_warping_accuracy + 1));
96 src_y = s->mb_y * 8 + (motion_y >> (s->sprite_warping_accuracy + 1));
97 motion_x <<= (3 - s->sprite_warping_accuracy);
98 motion_y <<= (3 - s->sprite_warping_accuracy);
99 src_x = av_clip(src_x, -8, s->width >> 1);
100 if (src_x == s->width >> 1)
101 motion_x = 0;
102 src_y = av_clip(src_y, -8, s->height >> 1);
103 if (src_y == s->height >> 1)
104 motion_y = 0;
105
106 offset = (src_y * uvlinesize) + src_x;
107 ptr = ref_picture[1] + offset;
108 if ((unsigned)src_x >= FFMAX((s->h_edge_pos >> 1) - 9, 0) ||
109 (unsigned)src_y >= FFMAX((s->v_edge_pos >> 1) - 9, 0)) {
110 s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr,
111 uvlinesize, uvlinesize,
112 9, 9,
113 src_x, src_y,
114 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
115 ptr = s->edge_emu_buffer;
116 emu = 1;
117 }
118 s->mdsp.gmc1(dest_cb, ptr, uvlinesize, 8,
119 motion_x & 15, motion_y & 15, 128 - s->no_rounding);
120
121 ptr = ref_picture[2] + offset;
122 if (emu) {
123 s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr,
124 uvlinesize, uvlinesize,
125 9, 9,
126 src_x, src_y,
127 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
128 ptr = s->edge_emu_buffer;
129 }
130 s->mdsp.gmc1(dest_cr, ptr, uvlinesize, 8,
131 motion_x & 15, motion_y & 15, 128 - s->no_rounding);
132}
133
134static void gmc_motion(MpegEncContext *s,
135 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
136 uint8_t **ref_picture)
137{
138 uint8_t *ptr;
139 int linesize, uvlinesize;
140 const int a = s->sprite_warping_accuracy;
141 int ox, oy;
142
143 linesize = s->linesize;
144 uvlinesize = s->uvlinesize;
145
146 ptr = ref_picture[0];
147
148 ox = s->sprite_offset[0][0] + s->sprite_delta[0][0] * s->mb_x * 16 +
149 s->sprite_delta[0][1] * s->mb_y * 16;
150 oy = s->sprite_offset[0][1] + s->sprite_delta[1][0] * s->mb_x * 16 +
151 s->sprite_delta[1][1] * s->mb_y * 16;
152
153 s->mdsp.gmc(dest_y, ptr, linesize, 16,
154 ox, oy,
155 s->sprite_delta[0][0], s->sprite_delta[0][1],
156 s->sprite_delta[1][0], s->sprite_delta[1][1],
157 a + 1, (1 << (2 * a + 1)) - s->no_rounding,
158 s->h_edge_pos, s->v_edge_pos);
159 s->mdsp.gmc(dest_y + 8, ptr, linesize, 16,
160 ox + s->sprite_delta[0][0] * 8,
161 oy + s->sprite_delta[1][0] * 8,
162 s->sprite_delta[0][0], s->sprite_delta[0][1],
163 s->sprite_delta[1][0], s->sprite_delta[1][1],
164 a + 1, (1 << (2 * a + 1)) - s->no_rounding,
165 s->h_edge_pos, s->v_edge_pos);
166
167 if (CONFIG_GRAY && s->flags & CODEC_FLAG_GRAY)
168 return;
169
170 ox = s->sprite_offset[1][0] + s->sprite_delta[0][0] * s->mb_x * 8 +
171 s->sprite_delta[0][1] * s->mb_y * 8;
172 oy = s->sprite_offset[1][1] + s->sprite_delta[1][0] * s->mb_x * 8 +
173 s->sprite_delta[1][1] * s->mb_y * 8;
174
175 ptr = ref_picture[1];
176 s->mdsp.gmc(dest_cb, ptr, uvlinesize, 8,
177 ox, oy,
178 s->sprite_delta[0][0], s->sprite_delta[0][1],
179 s->sprite_delta[1][0], s->sprite_delta[1][1],
180 a + 1, (1 << (2 * a + 1)) - s->no_rounding,
181 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
182
183 ptr = ref_picture[2];
184 s->mdsp.gmc(dest_cr, ptr, uvlinesize, 8,
185 ox, oy,
186 s->sprite_delta[0][0], s->sprite_delta[0][1],
187 s->sprite_delta[1][0], s->sprite_delta[1][1],
188 a + 1, (1 << (2 * a + 1)) - s->no_rounding,
189 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
190}
191
192static inline int hpel_motion(MpegEncContext *s,
193 uint8_t *dest, uint8_t *src,
194 int src_x, int src_y,
195 op_pixels_func *pix_op,
196 int motion_x, int motion_y)
197{
198 int dxy = 0;
199 int emu = 0;
200
201 src_x += motion_x >> 1;
202 src_y += motion_y >> 1;
203
204 /* WARNING: do no forget half pels */
205 src_x = av_clip(src_x, -16, s->width); // FIXME unneeded for emu?
206 if (src_x != s->width)
207 dxy |= motion_x & 1;
208 src_y = av_clip(src_y, -16, s->height);
209 if (src_y != s->height)
210 dxy |= (motion_y & 1) << 1;
211 src += src_y * s->linesize + src_x;
212
213 if ((unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x & 1) - 8, 0) ||
214 (unsigned)src_y > FFMAX(s->v_edge_pos - (motion_y & 1) - 8, 0)) {
215 s->vdsp.emulated_edge_mc(s->edge_emu_buffer, src,
216 s->linesize, s->linesize,
217 9, 9,
218 src_x, src_y,
219 s->h_edge_pos, s->v_edge_pos);
220 src = s->edge_emu_buffer;
221 emu = 1;
222 }
223 pix_op[dxy](dest, src, s->linesize, 8);
224 return emu;
225}
226
227static av_always_inline
228void mpeg_motion_internal(MpegEncContext *s,
229 uint8_t *dest_y,
230 uint8_t *dest_cb,
231 uint8_t *dest_cr,
232 int field_based,
233 int bottom_field,
234 int field_select,
235 uint8_t **ref_picture,
236 op_pixels_func (*pix_op)[4],
237 int motion_x,
238 int motion_y,
239 int h,
240 int is_mpeg12,
241 int mb_y)
242{
243 uint8_t *ptr_y, *ptr_cb, *ptr_cr;
244 int dxy, uvdxy, mx, my, src_x, src_y,
245 uvsrc_x, uvsrc_y, v_edge_pos;
246 ptrdiff_t uvlinesize, linesize;
247
248#if 0
249 if (s->quarter_sample) {
250 motion_x >>= 1;
251 motion_y >>= 1;
252 }
253#endif
254
255 v_edge_pos = s->v_edge_pos >> field_based;
256 linesize = s->current_picture.f->linesize[0] << field_based;
257 uvlinesize = s->current_picture.f->linesize[1] << field_based;
258
259 dxy = ((motion_y & 1) << 1) | (motion_x & 1);
260 src_x = s->mb_x * 16 + (motion_x >> 1);
261 src_y = (mb_y << (4 - field_based)) + (motion_y >> 1);
262
263 if (!is_mpeg12 && s->out_format == FMT_H263) {
264 if ((s->workaround_bugs & FF_BUG_HPEL_CHROMA) && field_based) {
265 mx = (motion_x >> 1) | (motion_x & 1);
266 my = motion_y >> 1;
267 uvdxy = ((my & 1) << 1) | (mx & 1);
268 uvsrc_x = s->mb_x * 8 + (mx >> 1);
269 uvsrc_y = (mb_y << (3 - field_based)) + (my >> 1);
270 } else {
271 uvdxy = dxy | (motion_y & 2) | ((motion_x & 2) >> 1);
272 uvsrc_x = src_x >> 1;
273 uvsrc_y = src_y >> 1;
274 }
275 // Even chroma mv's are full pel in H261
276 } else if (!is_mpeg12 && s->out_format == FMT_H261) {
277 mx = motion_x / 4;
278 my = motion_y / 4;
279 uvdxy = 0;
280 uvsrc_x = s->mb_x * 8 + mx;
281 uvsrc_y = mb_y * 8 + my;
282 } else {
283 if (s->chroma_y_shift) {
284 mx = motion_x / 2;
285 my = motion_y / 2;
286 uvdxy = ((my & 1) << 1) | (mx & 1);
287 uvsrc_x = s->mb_x * 8 + (mx >> 1);
288 uvsrc_y = (mb_y << (3 - field_based)) + (my >> 1);
289 } else {
290 if (s->chroma_x_shift) {
291 // Chroma422
292 mx = motion_x / 2;
293 uvdxy = ((motion_y & 1) << 1) | (mx & 1);
294 uvsrc_x = s->mb_x * 8 + (mx >> 1);
295 uvsrc_y = src_y;
296 } else {
297 // Chroma444
298 uvdxy = dxy;
299 uvsrc_x = src_x;
300 uvsrc_y = src_y;
301 }
302 }
303 }
304
305 ptr_y = ref_picture[0] + src_y * linesize + src_x;
306 ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
307 ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
308
309 if ((unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x & 1) - 16, 0) ||
310 (unsigned)src_y > FFMAX( v_edge_pos - (motion_y & 1) - h , 0)) {
311 if (is_mpeg12 ||
312 s->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
313 s->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
314 av_log(s->avctx, AV_LOG_DEBUG,
315 "MPEG motion vector out of boundary (%d %d)\n", src_x,
316 src_y);
317 return;
318 }
319 s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr_y,
320 s->linesize, s->linesize,
321 17, 17 + field_based,
322 src_x, src_y << field_based,
323 s->h_edge_pos, s->v_edge_pos);
324 ptr_y = s->edge_emu_buffer;
325 if (!CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY)) {
326 uint8_t *ubuf = s->edge_emu_buffer + 18 * s->linesize;
327 uint8_t *vbuf = ubuf + 9 * s->uvlinesize;
328 s->vdsp.emulated_edge_mc(ubuf, ptr_cb,
329 s->uvlinesize, s->uvlinesize,
330 9, 9 + field_based,
331 uvsrc_x, uvsrc_y << field_based,
332 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
333 s->vdsp.emulated_edge_mc(vbuf, ptr_cr,
334 s->uvlinesize, s->uvlinesize,
335 9, 9 + field_based,
336 uvsrc_x, uvsrc_y << field_based,
337 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
338 ptr_cb = ubuf;
339 ptr_cr = vbuf;
340 }
341 }
342
343 /* FIXME use this for field pix too instead of the obnoxious hack which
344 * changes picture.data */
345 if (bottom_field) {
346 dest_y += s->linesize;
347 dest_cb += s->uvlinesize;
348 dest_cr += s->uvlinesize;
349 }
350
351 if (field_select) {
352 ptr_y += s->linesize;
353 ptr_cb += s->uvlinesize;
354 ptr_cr += s->uvlinesize;
355 }
356
357 pix_op[0][dxy](dest_y, ptr_y, linesize, h);
358
359 if (!CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY)) {
360 pix_op[s->chroma_x_shift][uvdxy]
361 (dest_cb, ptr_cb, uvlinesize, h >> s->chroma_y_shift);
362 pix_op[s->chroma_x_shift][uvdxy]
363 (dest_cr, ptr_cr, uvlinesize, h >> s->chroma_y_shift);
364 }
365 if (!is_mpeg12 && (CONFIG_H261_ENCODER || CONFIG_H261_DECODER) &&
366 s->out_format == FMT_H261) {
367 ff_h261_loop_filter(s);
368 }
369}
370/* apply one mpeg motion vector to the three components */
371static void mpeg_motion(MpegEncContext *s,
372 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
373 int field_select, uint8_t **ref_picture,
374 op_pixels_func (*pix_op)[4],
375 int motion_x, int motion_y, int h, int mb_y)
376{
377#if !CONFIG_SMALL
378 if (s->out_format == FMT_MPEG1)
379 mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, 0, 0,
380 field_select, ref_picture, pix_op,
381 motion_x, motion_y, h, 1, mb_y);
382 else
383#endif
384 mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, 0, 0,
385 field_select, ref_picture, pix_op,
386 motion_x, motion_y, h, 0, mb_y);
387}
388
389static void mpeg_motion_field(MpegEncContext *s, uint8_t *dest_y,
390 uint8_t *dest_cb, uint8_t *dest_cr,
391 int bottom_field, int field_select,
392 uint8_t **ref_picture,
393 op_pixels_func (*pix_op)[4],
394 int motion_x, int motion_y, int h, int mb_y)
395{
396#if !CONFIG_SMALL
397 if (s->out_format == FMT_MPEG1)
398 mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, 1,
399 bottom_field, field_select, ref_picture, pix_op,
400 motion_x, motion_y, h, 1, mb_y);
401 else
402#endif
403 mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, 1,
404 bottom_field, field_select, ref_picture, pix_op,
405 motion_x, motion_y, h, 0, mb_y);
406}
407
408// FIXME: SIMDify, avg variant, 16x16 version
409static inline void put_obmc(uint8_t *dst, uint8_t *src[5], int stride)
410{
411 int x;
412 uint8_t *const top = src[1];
413 uint8_t *const left = src[2];
414 uint8_t *const mid = src[0];
415 uint8_t *const right = src[3];
416 uint8_t *const bottom = src[4];
417#define OBMC_FILTER(x, t, l, m, r, b)\
418 dst[x]= (t*top[x] + l*left[x] + m*mid[x] + r*right[x] + b*bottom[x] + 4)>>3
419#define OBMC_FILTER4(x, t, l, m, r, b)\
420 OBMC_FILTER(x , t, l, m, r, b);\
421 OBMC_FILTER(x+1 , t, l, m, r, b);\
422 OBMC_FILTER(x +stride, t, l, m, r, b);\
423 OBMC_FILTER(x+1+stride, t, l, m, r, b);
424
425 x = 0;
426 OBMC_FILTER (x , 2, 2, 4, 0, 0);
427 OBMC_FILTER (x + 1, 2, 1, 5, 0, 0);
428 OBMC_FILTER4(x + 2, 2, 1, 5, 0, 0);
429 OBMC_FILTER4(x + 4, 2, 0, 5, 1, 0);
430 OBMC_FILTER (x + 6, 2, 0, 5, 1, 0);
431 OBMC_FILTER (x + 7, 2, 0, 4, 2, 0);
432 x += stride;
433 OBMC_FILTER (x , 1, 2, 5, 0, 0);
434 OBMC_FILTER (x + 1, 1, 2, 5, 0, 0);
435 OBMC_FILTER (x + 6, 1, 0, 5, 2, 0);
436 OBMC_FILTER (x + 7, 1, 0, 5, 2, 0);
437 x += stride;
438 OBMC_FILTER4(x , 1, 2, 5, 0, 0);
439 OBMC_FILTER4(x + 2, 1, 1, 6, 0, 0);
440 OBMC_FILTER4(x + 4, 1, 0, 6, 1, 0);
441 OBMC_FILTER4(x + 6, 1, 0, 5, 2, 0);
442 x += 2 * stride;
443 OBMC_FILTER4(x , 0, 2, 5, 0, 1);
444 OBMC_FILTER4(x + 2, 0, 1, 6, 0, 1);
445 OBMC_FILTER4(x + 4, 0, 0, 6, 1, 1);
446 OBMC_FILTER4(x + 6, 0, 0, 5, 2, 1);
447 x += 2*stride;
448 OBMC_FILTER (x , 0, 2, 5, 0, 1);
449 OBMC_FILTER (x + 1, 0, 2, 5, 0, 1);
450 OBMC_FILTER4(x + 2, 0, 1, 5, 0, 2);
451 OBMC_FILTER4(x + 4, 0, 0, 5, 1, 2);
452 OBMC_FILTER (x + 6, 0, 0, 5, 2, 1);
453 OBMC_FILTER (x + 7, 0, 0, 5, 2, 1);
454 x += stride;
455 OBMC_FILTER (x , 0, 2, 4, 0, 2);
456 OBMC_FILTER (x + 1, 0, 1, 5, 0, 2);
457 OBMC_FILTER (x + 6, 0, 0, 5, 1, 2);
458 OBMC_FILTER (x + 7, 0, 0, 4, 2, 2);
459}
460
461/* obmc for 1 8x8 luma block */
462static inline void obmc_motion(MpegEncContext *s,
463 uint8_t *dest, uint8_t *src,
464 int src_x, int src_y,
465 op_pixels_func *pix_op,
466 int16_t mv[5][2] /* mid top left right bottom */)
467#define MID 0
468{
469 int i;
470 uint8_t *ptr[5];
471
472 av_assert2(s->quarter_sample == 0);
473
474 for (i = 0; i < 5; i++) {
475 if (i && mv[i][0] == mv[MID][0] && mv[i][1] == mv[MID][1]) {
476 ptr[i] = ptr[MID];
477 } else {
478 ptr[i] = s->obmc_scratchpad + 8 * (i & 1) +
479 s->linesize * 8 * (i >> 1);
480 hpel_motion(s, ptr[i], src, src_x, src_y, pix_op,
481 mv[i][0], mv[i][1]);
482 }
483 }
484
485 put_obmc(dest, ptr, s->linesize);
486}
487
488static inline void qpel_motion(MpegEncContext *s,
489 uint8_t *dest_y,
490 uint8_t *dest_cb,
491 uint8_t *dest_cr,
492 int field_based, int bottom_field,
493 int field_select, uint8_t **ref_picture,
494 op_pixels_func (*pix_op)[4],
495 qpel_mc_func (*qpix_op)[16],
496 int motion_x, int motion_y, int h)
497{
498 uint8_t *ptr_y, *ptr_cb, *ptr_cr;
499 int dxy, uvdxy, mx, my, src_x, src_y, uvsrc_x, uvsrc_y, v_edge_pos;
500 ptrdiff_t linesize, uvlinesize;
501
502 dxy = ((motion_y & 3) << 2) | (motion_x & 3);
503
504 src_x = s->mb_x * 16 + (motion_x >> 2);
505 src_y = s->mb_y * (16 >> field_based) + (motion_y >> 2);
506
507 v_edge_pos = s->v_edge_pos >> field_based;
508 linesize = s->linesize << field_based;
509 uvlinesize = s->uvlinesize << field_based;
510
511 if (field_based) {
512 mx = motion_x / 2;
513 my = motion_y >> 1;
514 } else if (s->workaround_bugs & FF_BUG_QPEL_CHROMA2) {
515 static const int rtab[8] = { 0, 0, 1, 1, 0, 0, 0, 1 };
516 mx = (motion_x >> 1) + rtab[motion_x & 7];
517 my = (motion_y >> 1) + rtab[motion_y & 7];
518 } else if (s->workaround_bugs & FF_BUG_QPEL_CHROMA) {
519 mx = (motion_x >> 1) | (motion_x & 1);
520 my = (motion_y >> 1) | (motion_y & 1);
521 } else {
522 mx = motion_x / 2;
523 my = motion_y / 2;
524 }
525 mx = (mx >> 1) | (mx & 1);
526 my = (my >> 1) | (my & 1);
527
528 uvdxy = (mx & 1) | ((my & 1) << 1);
529 mx >>= 1;
530 my >>= 1;
531
532 uvsrc_x = s->mb_x * 8 + mx;
533 uvsrc_y = s->mb_y * (8 >> field_based) + my;
534
535 ptr_y = ref_picture[0] + src_y * linesize + src_x;
536 ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
537 ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
538
539 if ((unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x & 3) - 16, 0) ||
540 (unsigned)src_y > FFMAX( v_edge_pos - (motion_y & 3) - h, 0)) {
541 s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr_y,
542 s->linesize, s->linesize,
543 17, 17 + field_based,
544 src_x, src_y << field_based,
545 s->h_edge_pos, s->v_edge_pos);
546 ptr_y = s->edge_emu_buffer;
547 if (!CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY)) {
548 uint8_t *ubuf = s->edge_emu_buffer + 18 * s->linesize;
549 uint8_t *vbuf = ubuf + 9 * s->uvlinesize;
550 s->vdsp.emulated_edge_mc(ubuf, ptr_cb,
551 s->uvlinesize, s->uvlinesize,
552 9, 9 + field_based,
553 uvsrc_x, uvsrc_y << field_based,
554 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
555 s->vdsp.emulated_edge_mc(vbuf, ptr_cr,
556 s->uvlinesize, s->uvlinesize,
557 9, 9 + field_based,
558 uvsrc_x, uvsrc_y << field_based,
559 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
560 ptr_cb = ubuf;
561 ptr_cr = vbuf;
562 }
563 }
564
565 if (!field_based)
566 qpix_op[0][dxy](dest_y, ptr_y, linesize);
567 else {
568 if (bottom_field) {
569 dest_y += s->linesize;
570 dest_cb += s->uvlinesize;
571 dest_cr += s->uvlinesize;
572 }
573
574 if (field_select) {
575 ptr_y += s->linesize;
576 ptr_cb += s->uvlinesize;
577 ptr_cr += s->uvlinesize;
578 }
579 // damn interlaced mode
580 // FIXME boundary mirroring is not exactly correct here
581 qpix_op[1][dxy](dest_y, ptr_y, linesize);
582 qpix_op[1][dxy](dest_y + 8, ptr_y + 8, linesize);
583 }
584 if (!CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY)) {
585 pix_op[1][uvdxy](dest_cr, ptr_cr, uvlinesize, h >> 1);
586 pix_op[1][uvdxy](dest_cb, ptr_cb, uvlinesize, h >> 1);
587 }
588}
589
590/**
591 * h263 chroma 4mv motion compensation.
592 */
593static void chroma_4mv_motion(MpegEncContext *s,
594 uint8_t *dest_cb, uint8_t *dest_cr,
595 uint8_t **ref_picture,
596 op_pixels_func *pix_op,
597 int mx, int my)
598{
599 uint8_t *ptr;
600 int src_x, src_y, dxy, emu = 0;
601 ptrdiff_t offset;
602
603 /* In case of 8X8, we construct a single chroma motion vector
604 * with a special rounding */
605 mx = ff_h263_round_chroma(mx);
606 my = ff_h263_round_chroma(my);
607
608 dxy = ((my & 1) << 1) | (mx & 1);
609 mx >>= 1;
610 my >>= 1;
611
612 src_x = s->mb_x * 8 + mx;
613 src_y = s->mb_y * 8 + my;
614 src_x = av_clip(src_x, -8, (s->width >> 1));
615 if (src_x == (s->width >> 1))
616 dxy &= ~1;
617 src_y = av_clip(src_y, -8, (s->height >> 1));
618 if (src_y == (s->height >> 1))
619 dxy &= ~2;
620
621 offset = src_y * s->uvlinesize + src_x;
622 ptr = ref_picture[1] + offset;
623 if ((unsigned)src_x > FFMAX((s->h_edge_pos >> 1) - (dxy & 1) - 8, 0) ||
624 (unsigned)src_y > FFMAX((s->v_edge_pos >> 1) - (dxy >> 1) - 8, 0)) {
625 s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr,
626 s->uvlinesize, s->uvlinesize,
627 9, 9, src_x, src_y,
628 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
629 ptr = s->edge_emu_buffer;
630 emu = 1;
631 }
632 pix_op[dxy](dest_cb, ptr, s->uvlinesize, 8);
633
634 ptr = ref_picture[2] + offset;
635 if (emu) {
636 s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr,
637 s->uvlinesize, s->uvlinesize,
638 9, 9, src_x, src_y,
639 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
640 ptr = s->edge_emu_buffer;
641 }
642 pix_op[dxy](dest_cr, ptr, s->uvlinesize, 8);
643}
644
645static inline void prefetch_motion(MpegEncContext *s, uint8_t **pix, int dir)
646{
647 /* fetch pixels for estimated mv 4 macroblocks ahead
648 * optimized for 64byte cache lines */
649 const int shift = s->quarter_sample ? 2 : 1;
650 const int mx = (s->mv[dir][0][0] >> shift) + 16 * s->mb_x + 8;
651 const int my = (s->mv[dir][0][1] >> shift) + 16 * s->mb_y;
652 int off = mx + (my + (s->mb_x & 3) * 4) * s->linesize + 64;
653
654 s->vdsp.prefetch(pix[0] + off, s->linesize, 4);
655 off = (mx >> 1) + ((my >> 1) + (s->mb_x & 7)) * s->uvlinesize + 64;
656 s->vdsp.prefetch(pix[1] + off, pix[2] - pix[1], 2);
657}
658
659static inline void apply_obmc(MpegEncContext *s,
660 uint8_t *dest_y,
661 uint8_t *dest_cb,
662 uint8_t *dest_cr,
663 uint8_t **ref_picture,
664 op_pixels_func (*pix_op)[4])
665{
666 LOCAL_ALIGNED_8(int16_t, mv_cache, [4], [4][2]);
667 Picture *cur_frame = &s->current_picture;
668 int mb_x = s->mb_x;
669 int mb_y = s->mb_y;
670 const int xy = mb_x + mb_y * s->mb_stride;
671 const int mot_stride = s->b8_stride;
672 const int mot_xy = mb_x * 2 + mb_y * 2 * mot_stride;
673 int mx, my, i;
674
675 av_assert2(!s->mb_skipped);
676
677 AV_COPY32(mv_cache[1][1], cur_frame->motion_val[0][mot_xy]);
678 AV_COPY32(mv_cache[1][2], cur_frame->motion_val[0][mot_xy + 1]);
679
680 AV_COPY32(mv_cache[2][1],
681 cur_frame->motion_val[0][mot_xy + mot_stride]);
682 AV_COPY32(mv_cache[2][2],
683 cur_frame->motion_val[0][mot_xy + mot_stride + 1]);
684
685 AV_COPY32(mv_cache[3][1],
686 cur_frame->motion_val[0][mot_xy + mot_stride]);
687 AV_COPY32(mv_cache[3][2],
688 cur_frame->motion_val[0][mot_xy + mot_stride + 1]);
689
690 if (mb_y == 0 || IS_INTRA(cur_frame->mb_type[xy - s->mb_stride])) {
691 AV_COPY32(mv_cache[0][1], mv_cache[1][1]);
692 AV_COPY32(mv_cache[0][2], mv_cache[1][2]);
693 } else {
694 AV_COPY32(mv_cache[0][1],
695 cur_frame->motion_val[0][mot_xy - mot_stride]);
696 AV_COPY32(mv_cache[0][2],
697 cur_frame->motion_val[0][mot_xy - mot_stride + 1]);
698 }
699
700 if (mb_x == 0 || IS_INTRA(cur_frame->mb_type[xy - 1])) {
701 AV_COPY32(mv_cache[1][0], mv_cache[1][1]);
702 AV_COPY32(mv_cache[2][0], mv_cache[2][1]);
703 } else {
704 AV_COPY32(mv_cache[1][0], cur_frame->motion_val[0][mot_xy - 1]);
705 AV_COPY32(mv_cache[2][0],
706 cur_frame->motion_val[0][mot_xy - 1 + mot_stride]);
707 }
708
709 if (mb_x + 1 >= s->mb_width || IS_INTRA(cur_frame->mb_type[xy + 1])) {
710 AV_COPY32(mv_cache[1][3], mv_cache[1][2]);
711 AV_COPY32(mv_cache[2][3], mv_cache[2][2]);
712 } else {
713 AV_COPY32(mv_cache[1][3], cur_frame->motion_val[0][mot_xy + 2]);
714 AV_COPY32(mv_cache[2][3],
715 cur_frame->motion_val[0][mot_xy + 2 + mot_stride]);
716 }
717
718 mx = 0;
719 my = 0;
720 for (i = 0; i < 4; i++) {
721 const int x = (i & 1) + 1;
722 const int y = (i >> 1) + 1;
723 int16_t mv[5][2] = {
724 { mv_cache[y][x][0], mv_cache[y][x][1] },
725 { mv_cache[y - 1][x][0], mv_cache[y - 1][x][1] },
726 { mv_cache[y][x - 1][0], mv_cache[y][x - 1][1] },
727 { mv_cache[y][x + 1][0], mv_cache[y][x + 1][1] },
728 { mv_cache[y + 1][x][0], mv_cache[y + 1][x][1] }
729 };
730 // FIXME cleanup
731 obmc_motion(s, dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize,
732 ref_picture[0],
733 mb_x * 16 + (i & 1) * 8, mb_y * 16 + (i >> 1) * 8,
734 pix_op[1],
735 mv);
736
737 mx += mv[0][0];
738 my += mv[0][1];
739 }
740 if (!CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY))
741 chroma_4mv_motion(s, dest_cb, dest_cr,
742 ref_picture, pix_op[1],
743 mx, my);
744}
745
746static inline void apply_8x8(MpegEncContext *s,
747 uint8_t *dest_y,
748 uint8_t *dest_cb,
749 uint8_t *dest_cr,
750 int dir,
751 uint8_t **ref_picture,
752 qpel_mc_func (*qpix_op)[16],
753 op_pixels_func (*pix_op)[4])
754{
755 int dxy, mx, my, src_x, src_y;
756 int i;
757 int mb_x = s->mb_x;
758 int mb_y = s->mb_y;
759 uint8_t *ptr, *dest;
760
761 mx = 0;
762 my = 0;
763 if (s->quarter_sample) {
764 for (i = 0; i < 4; i++) {
765 int motion_x = s->mv[dir][i][0];
766 int motion_y = s->mv[dir][i][1];
767
768 dxy = ((motion_y & 3) << 2) | (motion_x & 3);
769 src_x = mb_x * 16 + (motion_x >> 2) + (i & 1) * 8;
770 src_y = mb_y * 16 + (motion_y >> 2) + (i >> 1) * 8;
771
772 /* WARNING: do no forget half pels */
773 src_x = av_clip(src_x, -16, s->width);
774 if (src_x == s->width)
775 dxy &= ~3;
776 src_y = av_clip(src_y, -16, s->height);
777 if (src_y == s->height)
778 dxy &= ~12;
779
780 ptr = ref_picture[0] + (src_y * s->linesize) + (src_x);
781 if ((unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x & 3) - 8, 0) ||
782 (unsigned)src_y > FFMAX(s->v_edge_pos - (motion_y & 3) - 8, 0)) {
783 s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr,
784 s->linesize, s->linesize,
785 9, 9,
786 src_x, src_y,
787 s->h_edge_pos,
788 s->v_edge_pos);
789 ptr = s->edge_emu_buffer;
790 }
791 dest = dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize;
792 qpix_op[1][dxy](dest, ptr, s->linesize);
793
794 mx += s->mv[dir][i][0] / 2;
795 my += s->mv[dir][i][1] / 2;
796 }
797 } else {
798 for (i = 0; i < 4; i++) {
799 hpel_motion(s,
800 dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize,
801 ref_picture[0],
802 mb_x * 16 + (i & 1) * 8,
803 mb_y * 16 + (i >> 1) * 8,
804 pix_op[1],
805 s->mv[dir][i][0],
806 s->mv[dir][i][1]);
807
808 mx += s->mv[dir][i][0];
809 my += s->mv[dir][i][1];
810 }
811 }
812
813 if (!CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY))
814 chroma_4mv_motion(s, dest_cb, dest_cr,
815 ref_picture, pix_op[1], mx, my);
816}
817
818/**
819 * motion compensation of a single macroblock
820 * @param s context
821 * @param dest_y luma destination pointer
822 * @param dest_cb chroma cb/u destination pointer
823 * @param dest_cr chroma cr/v destination pointer
824 * @param dir direction (0->forward, 1->backward)
825 * @param ref_picture array[3] of pointers to the 3 planes of the reference picture
826 * @param pix_op halfpel motion compensation function (average or put normally)
827 * @param qpix_op qpel motion compensation function (average or put normally)
828 * the motion vectors are taken from s->mv and the MV type from s->mv_type
829 */
830static av_always_inline void mpv_motion_internal(MpegEncContext *s,
831 uint8_t *dest_y,
832 uint8_t *dest_cb,
833 uint8_t *dest_cr,
834 int dir,
835 uint8_t **ref_picture,
836 op_pixels_func (*pix_op)[4],
837 qpel_mc_func (*qpix_op)[16],
838 int is_mpeg12)
839{
840 int i;
841 int mb_y = s->mb_y;
842
843 prefetch_motion(s, ref_picture, dir);
844
845 if (!is_mpeg12 && s->obmc && s->pict_type != AV_PICTURE_TYPE_B) {
846 apply_obmc(s, dest_y, dest_cb, dest_cr, ref_picture, pix_op);
847 return;
848 }
849
850 switch (s->mv_type) {
851 case MV_TYPE_16X16:
852 if (s->mcsel) {
853 if (s->real_sprite_warping_points == 1) {
854 gmc1_motion(s, dest_y, dest_cb, dest_cr,
855 ref_picture);
856 } else {
857 gmc_motion(s, dest_y, dest_cb, dest_cr,
858 ref_picture);
859 }
860 } else if (!is_mpeg12 && s->quarter_sample) {
861 qpel_motion(s, dest_y, dest_cb, dest_cr,
862 0, 0, 0,
863 ref_picture, pix_op, qpix_op,
864 s->mv[dir][0][0], s->mv[dir][0][1], 16);
865 } else if (!is_mpeg12 && (CONFIG_WMV2_DECODER || CONFIG_WMV2_ENCODER) &&
866 s->mspel && s->codec_id == AV_CODEC_ID_WMV2) {
867 ff_mspel_motion(s, dest_y, dest_cb, dest_cr,
868 ref_picture, pix_op,
869 s->mv[dir][0][0], s->mv[dir][0][1], 16);
870 } else {
871 mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,
872 ref_picture, pix_op,
873 s->mv[dir][0][0], s->mv[dir][0][1], 16, mb_y);
874 }
875 break;
876 case MV_TYPE_8X8:
877 if (!is_mpeg12)
878 apply_8x8(s, dest_y, dest_cb, dest_cr,
879 dir, ref_picture, qpix_op, pix_op);
880 break;
881 case MV_TYPE_FIELD:
882 if (s->picture_structure == PICT_FRAME) {
883 if (!is_mpeg12 && s->quarter_sample) {
884 for (i = 0; i < 2; i++)
885 qpel_motion(s, dest_y, dest_cb, dest_cr,
886 1, i, s->field_select[dir][i],
887 ref_picture, pix_op, qpix_op,
888 s->mv[dir][i][0], s->mv[dir][i][1], 8);
889 } else {
890 /* top field */
891 mpeg_motion_field(s, dest_y, dest_cb, dest_cr,
892 0, s->field_select[dir][0],
893 ref_picture, pix_op,
894 s->mv[dir][0][0], s->mv[dir][0][1], 8, mb_y);
895 /* bottom field */
896 mpeg_motion_field(s, dest_y, dest_cb, dest_cr,
897 1, s->field_select[dir][1],
898 ref_picture, pix_op,
899 s->mv[dir][1][0], s->mv[dir][1][1], 8, mb_y);
900 }
901 } else {
902 if ( s->picture_structure != s->field_select[dir][0] + 1 && s->pict_type != AV_PICTURE_TYPE_B && !s->first_field
903 || !ref_picture[0]) {
904 ref_picture = s->current_picture_ptr->f->data;
905 }
906
907 mpeg_motion(s, dest_y, dest_cb, dest_cr,
908 s->field_select[dir][0],
909 ref_picture, pix_op,
910 s->mv[dir][0][0], s->mv[dir][0][1], 16, mb_y >> 1);
911 }
912 break;
913 case MV_TYPE_16X8:
914 for (i = 0; i < 2; i++) {
915 uint8_t **ref2picture;
916
917 if ((s->picture_structure == s->field_select[dir][i] + 1
918 || s->pict_type == AV_PICTURE_TYPE_B || s->first_field) && ref_picture[0]) {
919 ref2picture = ref_picture;
920 } else {
921 ref2picture = s->current_picture_ptr->f->data;
922 }
923
924 mpeg_motion(s, dest_y, dest_cb, dest_cr,
925 s->field_select[dir][i],
926 ref2picture, pix_op,
927 s->mv[dir][i][0], s->mv[dir][i][1] + 16 * i,
928 8, mb_y >> 1);
929
930 dest_y += 16 * s->linesize;
931 dest_cb += (16 >> s->chroma_y_shift) * s->uvlinesize;
932 dest_cr += (16 >> s->chroma_y_shift) * s->uvlinesize;
933 }
934 break;
935 case MV_TYPE_DMV:
936 if (s->picture_structure == PICT_FRAME) {
937 for (i = 0; i < 2; i++) {
938 int j;
939 for (j = 0; j < 2; j++)
940 mpeg_motion_field(s, dest_y, dest_cb, dest_cr,
941 j, j ^ i, ref_picture, pix_op,
942 s->mv[dir][2 * i + j][0],
943 s->mv[dir][2 * i + j][1], 8, mb_y);
944 pix_op = s->hdsp.avg_pixels_tab;
945 }
946 } else {
947 if (!ref_picture[0]) {
948 ref_picture = s->current_picture_ptr->f->data;
949 }
950 for (i = 0; i < 2; i++) {
951 mpeg_motion(s, dest_y, dest_cb, dest_cr,
952 s->picture_structure != i + 1,
953 ref_picture, pix_op,
954 s->mv[dir][2 * i][0], s->mv[dir][2 * i][1],
955 16, mb_y >> 1);
956
957 // after put we make avg of the same block
958 pix_op = s->hdsp.avg_pixels_tab;
959
960 /* opposite parity is always in the same frame if this is
961 * second field */
962 if (!s->first_field) {
963 ref_picture = s->current_picture_ptr->f->data;
964 }
965 }
966 }
967 break;
968 default: av_assert2(0);
969 }
970}
971
972void ff_mpv_motion(MpegEncContext *s,
973 uint8_t *dest_y, uint8_t *dest_cb,
974 uint8_t *dest_cr, int dir,
975 uint8_t **ref_picture,
976 op_pixels_func (*pix_op)[4],
977 qpel_mc_func (*qpix_op)[16])
978{
979#if !CONFIG_SMALL
980 if (s->out_format == FMT_MPEG1)
981 mpv_motion_internal(s, dest_y, dest_cb, dest_cr, dir,
982 ref_picture, pix_op, qpix_op, 1);
983 else
984#endif
985 mpv_motion_internal(s, dest_y, dest_cb, dest_cr, dir,
986 ref_picture, pix_op, qpix_op, 0);
987}
ffmpeg Piment Noir Debian package repository