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Partially revert r20233, exp2f is not available on some BSDs, DOS and AVR32.
[FFMpeg-mirror/lagarith.git] / libavcodec / mpegvideo_common.h
blob5ce60dc64c35e616749353fe070b335e28f0dac6
1 /*
2 * The simplest mpeg encoder (well, it was the simplest!)
3 * Copyright (c) 2000,2001 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5 *
6 * 4MV & hq & B-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
7 *
8 * This file is part of FFmpeg.
9 *
10 * FFmpeg is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
14 *
15 * FFmpeg is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
19 *
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with FFmpeg; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 */
24
25 /**
26 * @file libavcodec/mpegvideo_common.h
27 * The simplest mpeg encoder (well, it was the simplest!).
28 */
29
30 #ifndef AVCODEC_MPEGVIDEO_COMMON_H
31 #define AVCODEC_MPEGVIDEO_COMMON_H
32
33 #include <string.h>
34 #include "avcodec.h"
35 #include "dsputil.h"
36 #include "mpegvideo.h"
37 #include "mjpegenc.h"
38 #include "msmpeg4.h"
39 #include "faandct.h"
40 #include <limits.h>
41
42 int dct_quantize_c(MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow);
43 int dct_quantize_trellis_c(MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow);
44 void denoise_dct_c(MpegEncContext *s, DCTELEM *block);
45
46 /**
47 * allocates a Picture
48 * The pixels are allocated/set by calling get_buffer() if shared=0
49 */
50 int alloc_picture(MpegEncContext *s, Picture *pic, int shared);
51
52 /**
53 * sets the given MpegEncContext to common defaults (same for encoding and decoding).
54 * the changed fields will not depend upon the prior state of the MpegEncContext.
55 */
56 void MPV_common_defaults(MpegEncContext *s);
57
58 static inline void gmc1_motion(MpegEncContext *s,
59 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
60 uint8_t **ref_picture)
61 {
62 uint8_t *ptr;
63 int offset, src_x, src_y, linesize, uvlinesize;
64 int motion_x, motion_y;
65 int emu=0;
66
67 motion_x= s->sprite_offset[0][0];
68 motion_y= s->sprite_offset[0][1];
69 src_x = s->mb_x * 16 + (motion_x >> (s->sprite_warping_accuracy+1));
70 src_y = s->mb_y * 16 + (motion_y >> (s->sprite_warping_accuracy+1));
71 motion_x<<=(3-s->sprite_warping_accuracy);
72 motion_y<<=(3-s->sprite_warping_accuracy);
73 src_x = av_clip(src_x, -16, s->width);
74 if (src_x == s->width)
75 motion_x =0;
76 src_y = av_clip(src_y, -16, s->height);
77 if (src_y == s->height)
78 motion_y =0;
79
80 linesize = s->linesize;
81 uvlinesize = s->uvlinesize;
82
83 ptr = ref_picture[0] + (src_y * linesize) + src_x;
84
85 if(s->flags&CODEC_FLAG_EMU_EDGE){
86 if( (unsigned)src_x >= s->h_edge_pos - 17
87 || (unsigned)src_y >= s->v_edge_pos - 17){
88 ff_emulated_edge_mc(s->edge_emu_buffer, ptr, linesize, 17, 17, src_x, src_y, s->h_edge_pos, s->v_edge_pos);
89 ptr= s->edge_emu_buffer;
90 }
91 }
92
93 if((motion_x|motion_y)&7){
94 s->dsp.gmc1(dest_y , ptr , linesize, 16, motion_x&15, motion_y&15, 128 - s->no_rounding);
95 s->dsp.gmc1(dest_y+8, ptr+8, linesize, 16, motion_x&15, motion_y&15, 128 - s->no_rounding);
96 }else{
97 int dxy;
98
99 dxy= ((motion_x>>3)&1) | ((motion_y>>2)&2);
100 if (s->no_rounding){
101 s->dsp.put_no_rnd_pixels_tab[0][dxy](dest_y, ptr, linesize, 16);
102 }else{
103 s->dsp.put_pixels_tab [0][dxy](dest_y, ptr, linesize, 16);
104 }
105 }
106
107 if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
108
109 motion_x= s->sprite_offset[1][0];
110 motion_y= s->sprite_offset[1][1];
111 src_x = s->mb_x * 8 + (motion_x >> (s->sprite_warping_accuracy+1));
112 src_y = s->mb_y * 8 + (motion_y >> (s->sprite_warping_accuracy+1));
113 motion_x<<=(3-s->sprite_warping_accuracy);
114 motion_y<<=(3-s->sprite_warping_accuracy);
115 src_x = av_clip(src_x, -8, s->width>>1);
116 if (src_x == s->width>>1)
117 motion_x =0;
118 src_y = av_clip(src_y, -8, s->height>>1);
119 if (src_y == s->height>>1)
120 motion_y =0;
121
122 offset = (src_y * uvlinesize) + src_x;
123 ptr = ref_picture[1] + offset;
124 if(s->flags&CODEC_FLAG_EMU_EDGE){
125 if( (unsigned)src_x >= (s->h_edge_pos>>1) - 9
126 || (unsigned)src_y >= (s->v_edge_pos>>1) - 9){
127 ff_emulated_edge_mc(s->edge_emu_buffer, ptr, uvlinesize, 9, 9, src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1);
128 ptr= s->edge_emu_buffer;
129 emu=1;
130 }
131 }
132 s->dsp.gmc1(dest_cb, ptr, uvlinesize, 8, motion_x&15, motion_y&15, 128 - s->no_rounding);
133
134 ptr = ref_picture[2] + offset;
135 if(emu){
136 ff_emulated_edge_mc(s->edge_emu_buffer, ptr, uvlinesize, 9, 9, src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1);
137 ptr= s->edge_emu_buffer;
138 }
139 s->dsp.gmc1(dest_cr, ptr, uvlinesize, 8, motion_x&15, motion_y&15, 128 - s->no_rounding);
140
141 return;
142 }
143
144 static inline void gmc_motion(MpegEncContext *s,
145 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
146 uint8_t **ref_picture)
147 {
148 uint8_t *ptr;
149 int linesize, uvlinesize;
150 const int a= s->sprite_warping_accuracy;
151 int ox, oy;
152
153 linesize = s->linesize;
154 uvlinesize = s->uvlinesize;
155
156 ptr = ref_picture[0];
157
158 ox= s->sprite_offset[0][0] + s->sprite_delta[0][0]*s->mb_x*16 + s->sprite_delta[0][1]*s->mb_y*16;
159 oy= s->sprite_offset[0][1] + s->sprite_delta[1][0]*s->mb_x*16 + s->sprite_delta[1][1]*s->mb_y*16;
160
161 s->dsp.gmc(dest_y, ptr, linesize, 16,
162 ox,
163 oy,
164 s->sprite_delta[0][0], s->sprite_delta[0][1],
165 s->sprite_delta[1][0], s->sprite_delta[1][1],
166 a+1, (1<<(2*a+1)) - s->no_rounding,
167 s->h_edge_pos, s->v_edge_pos);
168 s->dsp.gmc(dest_y+8, ptr, linesize, 16,
169 ox + s->sprite_delta[0][0]*8,
170 oy + s->sprite_delta[1][0]*8,
171 s->sprite_delta[0][0], s->sprite_delta[0][1],
172 s->sprite_delta[1][0], s->sprite_delta[1][1],
173 a+1, (1<<(2*a+1)) - s->no_rounding,
174 s->h_edge_pos, s->v_edge_pos);
175
176 if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
177
178 ox= s->sprite_offset[1][0] + s->sprite_delta[0][0]*s->mb_x*8 + s->sprite_delta[0][1]*s->mb_y*8;
179 oy= s->sprite_offset[1][1] + s->sprite_delta[1][0]*s->mb_x*8 + s->sprite_delta[1][1]*s->mb_y*8;
180
181 ptr = ref_picture[1];
182 s->dsp.gmc(dest_cb, ptr, uvlinesize, 8,
183 ox,
184 oy,
185 s->sprite_delta[0][0], s->sprite_delta[0][1],
186 s->sprite_delta[1][0], s->sprite_delta[1][1],
187 a+1, (1<<(2*a+1)) - s->no_rounding,
188 s->h_edge_pos>>1, s->v_edge_pos>>1);
189
190 ptr = ref_picture[2];
191 s->dsp.gmc(dest_cr, ptr, uvlinesize, 8,
192 ox,
193 oy,
194 s->sprite_delta[0][0], s->sprite_delta[0][1],
195 s->sprite_delta[1][0], s->sprite_delta[1][1],
196 a+1, (1<<(2*a+1)) - s->no_rounding,
197 s->h_edge_pos>>1, s->v_edge_pos>>1);
198 }
199
200 static inline int hpel_motion(MpegEncContext *s,
201 uint8_t *dest, uint8_t *src,
202 int field_based, int field_select,
203 int src_x, int src_y,
204 int width, int height, int stride,
205 int h_edge_pos, int v_edge_pos,
206 int w, int h, op_pixels_func *pix_op,
207 int motion_x, int motion_y)
208 {
209 int dxy;
210 int emu=0;
211
212 dxy = ((motion_y & 1) << 1) | (motion_x & 1);
213 src_x += motion_x >> 1;
214 src_y += motion_y >> 1;
215
216 /* WARNING: do no forget half pels */
217 src_x = av_clip(src_x, -16, width); //FIXME unneeded for emu?
218 if (src_x == width)
219 dxy &= ~1;
220 src_y = av_clip(src_y, -16, height);
221 if (src_y == height)
222 dxy &= ~2;
223 src += src_y * stride + src_x;
224
225 if(s->unrestricted_mv && (s->flags&CODEC_FLAG_EMU_EDGE)){
226 if( (unsigned)src_x > h_edge_pos - (motion_x&1) - w
227 || (unsigned)src_y > v_edge_pos - (motion_y&1) - h){
228 ff_emulated_edge_mc(s->edge_emu_buffer, src, s->linesize, w+1, (h+1)<<field_based,
229 src_x, src_y<<field_based, h_edge_pos, s->v_edge_pos);
230 src= s->edge_emu_buffer;
231 emu=1;
232 }
233 }
234 if(field_select)
235 src += s->linesize;
236 pix_op[dxy](dest, src, stride, h);
237 return emu;
238 }
239
240 static av_always_inline
241 void mpeg_motion_internal(MpegEncContext *s,
242 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
243 int field_based, int bottom_field, int field_select,
244 uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
245 int motion_x, int motion_y, int h, int is_mpeg12)
246 {
247 uint8_t *ptr_y, *ptr_cb, *ptr_cr;
248 int dxy, uvdxy, mx, my, src_x, src_y,
249 uvsrc_x, uvsrc_y, v_edge_pos, uvlinesize, linesize;
250
251 #if 0
252 if(s->quarter_sample)
253 {
254 motion_x>>=1;
255 motion_y>>=1;
256 }
257 #endif
258
259 v_edge_pos = s->v_edge_pos >> field_based;
260 linesize = s->current_picture.linesize[0] << field_based;
261 uvlinesize = s->current_picture.linesize[1] << field_based;
262
263 dxy = ((motion_y & 1) << 1) | (motion_x & 1);
264 src_x = s->mb_x* 16 + (motion_x >> 1);
265 src_y =(s->mb_y<<(4-field_based)) + (motion_y >> 1);
266
267 if (!is_mpeg12 && s->out_format == FMT_H263) {
268 if((s->workaround_bugs & FF_BUG_HPEL_CHROMA) && field_based){
269 mx = (motion_x>>1)|(motion_x&1);
270 my = motion_y >>1;
271 uvdxy = ((my & 1) << 1) | (mx & 1);
272 uvsrc_x = s->mb_x* 8 + (mx >> 1);
273 uvsrc_y = (s->mb_y<<(3-field_based)) + (my >> 1);
274 }else{
275 uvdxy = dxy | (motion_y & 2) | ((motion_x & 2) >> 1);
276 uvsrc_x = src_x>>1;
277 uvsrc_y = src_y>>1;
278 }
279 }else if(!is_mpeg12 && s->out_format == FMT_H261){//even chroma mv's are full pel in H261
280 mx = motion_x / 4;
281 my = motion_y / 4;
282 uvdxy = 0;
283 uvsrc_x = s->mb_x*8 + mx;
284 uvsrc_y = s->mb_y*8 + my;
285 } else {
286 if(s->chroma_y_shift){
287 mx = motion_x / 2;
288 my = motion_y / 2;
289 uvdxy = ((my & 1) << 1) | (mx & 1);
290 uvsrc_x = s->mb_x* 8 + (mx >> 1);
291 uvsrc_y = (s->mb_y<<(3-field_based)) + (my >> 1);
292 } else {
293 if(s->chroma_x_shift){
294 //Chroma422
295 mx = motion_x / 2;
296 uvdxy = ((motion_y & 1) << 1) | (mx & 1);
297 uvsrc_x = s->mb_x* 8 + (mx >> 1);
298 uvsrc_y = src_y;
299 } else {
300 //Chroma444
301 uvdxy = dxy;
302 uvsrc_x = src_x;
303 uvsrc_y = src_y;
304 }
305 }
306 }
307
308 ptr_y = ref_picture[0] + src_y * linesize + src_x;
309 ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
310 ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
311
312 if( (unsigned)src_x > s->h_edge_pos - (motion_x&1) - 16
313 || (unsigned)src_y > v_edge_pos - (motion_y&1) - h){
314 if(is_mpeg12 || s->codec_id == CODEC_ID_MPEG2VIDEO ||
315 s->codec_id == CODEC_ID_MPEG1VIDEO){
316 av_log(s->avctx,AV_LOG_DEBUG,
317 "MPEG motion vector out of boundary\n");
318 return;
319 }
320 ff_emulated_edge_mc(s->edge_emu_buffer, ptr_y, 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 *uvbuf= s->edge_emu_buffer+18*s->linesize;
327 ff_emulated_edge_mc(uvbuf ,
328 ptr_cb, s->uvlinesize,
329 9, 9+field_based,
330 uvsrc_x, uvsrc_y<<field_based,
331 s->h_edge_pos>>1, s->v_edge_pos>>1);
332 ff_emulated_edge_mc(uvbuf+16,
333 ptr_cr, s->uvlinesize,
334 9, 9+field_based,
335 uvsrc_x, uvsrc_y<<field_based,
336 s->h_edge_pos>>1, s->v_edge_pos>>1);
337 ptr_cb= uvbuf;
338 ptr_cr= uvbuf+16;
339 }
340 }
341
342 if(bottom_field){ //FIXME use this for field pix too instead of the obnoxious hack which changes picture.data
343 dest_y += s->linesize;
344 dest_cb+= s->uvlinesize;
345 dest_cr+= s->uvlinesize;
346 }
347
348 if(field_select){
349 ptr_y += s->linesize;
350 ptr_cb+= s->uvlinesize;
351 ptr_cr+= s->uvlinesize;
352 }
353
354 pix_op[0][dxy](dest_y, ptr_y, linesize, h);
355
356 if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
357 pix_op[s->chroma_x_shift][uvdxy]
358 (dest_cb, ptr_cb, uvlinesize, h >> s->chroma_y_shift);
359 pix_op[s->chroma_x_shift][uvdxy]
360 (dest_cr, ptr_cr, uvlinesize, h >> s->chroma_y_shift);
361 }
362 if(!is_mpeg12 && (CONFIG_H261_ENCODER || CONFIG_H261_DECODER) &&
363 s->out_format == FMT_H261){
364 ff_h261_loop_filter(s);
365 }
366 }
367 /* apply one mpeg motion vector to the three components */
368 static av_always_inline
369 void mpeg_motion(MpegEncContext *s,
370 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
371 int field_based, int bottom_field, int field_select,
372 uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
373 int motion_x, int motion_y, int h)
374 {
375 #if !CONFIG_SMALL
376 if(s->out_format == FMT_MPEG1)
377 mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, field_based,
378 bottom_field, field_select, ref_picture, pix_op,
379 motion_x, motion_y, h, 1);
380 else
381 #endif
382 mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, field_based,
383 bottom_field, field_select, ref_picture, pix_op,
384 motion_x, motion_y, h, 0);
385 }
386
387 //FIXME move to dsputil, avg variant, 16x16 version
388 static inline void put_obmc(uint8_t *dst, uint8_t *src[5], int stride){
389 int x;
390 uint8_t * const top = src[1];
391 uint8_t * const left = src[2];
392 uint8_t * const mid = src[0];
393 uint8_t * const right = src[3];
394 uint8_t * const bottom= src[4];
395 #define OBMC_FILTER(x, t, l, m, r, b)\
396 dst[x]= (t*top[x] + l*left[x] + m*mid[x] + r*right[x] + b*bottom[x] + 4)>>3
397 #define OBMC_FILTER4(x, t, l, m, r, b)\
398 OBMC_FILTER(x , t, l, m, r, b);\
399 OBMC_FILTER(x+1 , t, l, m, r, b);\
400 OBMC_FILTER(x +stride, t, l, m, r, b);\
401 OBMC_FILTER(x+1+stride, t, l, m, r, b);
402
403 x=0;
404 OBMC_FILTER (x , 2, 2, 4, 0, 0);
405 OBMC_FILTER (x+1, 2, 1, 5, 0, 0);
406 OBMC_FILTER4(x+2, 2, 1, 5, 0, 0);
407 OBMC_FILTER4(x+4, 2, 0, 5, 1, 0);
408 OBMC_FILTER (x+6, 2, 0, 5, 1, 0);
409 OBMC_FILTER (x+7, 2, 0, 4, 2, 0);
410 x+= stride;
411 OBMC_FILTER (x , 1, 2, 5, 0, 0);
412 OBMC_FILTER (x+1, 1, 2, 5, 0, 0);
413 OBMC_FILTER (x+6, 1, 0, 5, 2, 0);
414 OBMC_FILTER (x+7, 1, 0, 5, 2, 0);
415 x+= stride;
416 OBMC_FILTER4(x , 1, 2, 5, 0, 0);
417 OBMC_FILTER4(x+2, 1, 1, 6, 0, 0);
418 OBMC_FILTER4(x+4, 1, 0, 6, 1, 0);
419 OBMC_FILTER4(x+6, 1, 0, 5, 2, 0);
420 x+= 2*stride;
421 OBMC_FILTER4(x , 0, 2, 5, 0, 1);
422 OBMC_FILTER4(x+2, 0, 1, 6, 0, 1);
423 OBMC_FILTER4(x+4, 0, 0, 6, 1, 1);
424 OBMC_FILTER4(x+6, 0, 0, 5, 2, 1);
425 x+= 2*stride;
426 OBMC_FILTER (x , 0, 2, 5, 0, 1);
427 OBMC_FILTER (x+1, 0, 2, 5, 0, 1);
428 OBMC_FILTER4(x+2, 0, 1, 5, 0, 2);
429 OBMC_FILTER4(x+4, 0, 0, 5, 1, 2);
430 OBMC_FILTER (x+6, 0, 0, 5, 2, 1);
431 OBMC_FILTER (x+7, 0, 0, 5, 2, 1);
432 x+= stride;
433 OBMC_FILTER (x , 0, 2, 4, 0, 2);
434 OBMC_FILTER (x+1, 0, 1, 5, 0, 2);
435 OBMC_FILTER (x+6, 0, 0, 5, 1, 2);
436 OBMC_FILTER (x+7, 0, 0, 4, 2, 2);
437 }
438
439 /* obmc for 1 8x8 luma block */
440 static inline void obmc_motion(MpegEncContext *s,
441 uint8_t *dest, uint8_t *src,
442 int src_x, int src_y,
443 op_pixels_func *pix_op,
444 int16_t mv[5][2]/* mid top left right bottom*/)
445 #define MID 0
446 {
447 int i;
448 uint8_t *ptr[5];
449
450 assert(s->quarter_sample==0);
451
452 for(i=0; i<5; i++){
453 if(i && mv[i][0]==mv[MID][0] && mv[i][1]==mv[MID][1]){
454 ptr[i]= ptr[MID];
455 }else{
456 ptr[i]= s->obmc_scratchpad + 8*(i&1) + s->linesize*8*(i>>1);
457 hpel_motion(s, ptr[i], src, 0, 0,
458 src_x, src_y,
459 s->width, s->height, s->linesize,
460 s->h_edge_pos, s->v_edge_pos,
461 8, 8, pix_op,
462 mv[i][0], mv[i][1]);
463 }
464 }
465
466 put_obmc(dest, ptr, s->linesize);
467 }
468
469 static inline void qpel_motion(MpegEncContext *s,
470 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
471 int field_based, int bottom_field, int field_select,
472 uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
473 qpel_mc_func (*qpix_op)[16],
474 int motion_x, int motion_y, int h)
475 {
476 uint8_t *ptr_y, *ptr_cb, *ptr_cr;
477 int dxy, uvdxy, mx, my, src_x, src_y, uvsrc_x, uvsrc_y, v_edge_pos, linesize, uvlinesize;
478
479 dxy = ((motion_y & 3) << 2) | (motion_x & 3);
480 src_x = s->mb_x * 16 + (motion_x >> 2);
481 src_y = s->mb_y * (16 >> field_based) + (motion_y >> 2);
482
483 v_edge_pos = s->v_edge_pos >> field_based;
484 linesize = s->linesize << field_based;
485 uvlinesize = s->uvlinesize << field_based;
486
487 if(field_based){
488 mx= motion_x/2;
489 my= motion_y>>1;
490 }else if(s->workaround_bugs&FF_BUG_QPEL_CHROMA2){
491 static const int rtab[8]= {0,0,1,1,0,0,0,1};
492 mx= (motion_x>>1) + rtab[motion_x&7];
493 my= (motion_y>>1) + rtab[motion_y&7];
494 }else if(s->workaround_bugs&FF_BUG_QPEL_CHROMA){
495 mx= (motion_x>>1)|(motion_x&1);
496 my= (motion_y>>1)|(motion_y&1);
497 }else{
498 mx= motion_x/2;
499 my= motion_y/2;
500 }
501 mx= (mx>>1)|(mx&1);
502 my= (my>>1)|(my&1);
503
504 uvdxy= (mx&1) | ((my&1)<<1);
505 mx>>=1;
506 my>>=1;
507
508 uvsrc_x = s->mb_x * 8 + mx;
509 uvsrc_y = s->mb_y * (8 >> field_based) + my;
510
511 ptr_y = ref_picture[0] + src_y * linesize + src_x;
512 ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
513 ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
514
515 if( (unsigned)src_x > s->h_edge_pos - (motion_x&3) - 16
516 || (unsigned)src_y > v_edge_pos - (motion_y&3) - h ){
517 ff_emulated_edge_mc(s->edge_emu_buffer, ptr_y, s->linesize,
518 17, 17+field_based, src_x, src_y<<field_based,
519 s->h_edge_pos, s->v_edge_pos);
520 ptr_y= s->edge_emu_buffer;
521 if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
522 uint8_t *uvbuf= s->edge_emu_buffer + 18*s->linesize;
523 ff_emulated_edge_mc(uvbuf, ptr_cb, s->uvlinesize,
524 9, 9 + field_based,
525 uvsrc_x, uvsrc_y<<field_based,
526 s->h_edge_pos>>1, s->v_edge_pos>>1);
527 ff_emulated_edge_mc(uvbuf + 16, ptr_cr, s->uvlinesize,
528 9, 9 + field_based,
529 uvsrc_x, uvsrc_y<<field_based,
530 s->h_edge_pos>>1, s->v_edge_pos>>1);
531 ptr_cb= uvbuf;
532 ptr_cr= uvbuf + 16;
533 }
534 }
535
536 if(!field_based)
537 qpix_op[0][dxy](dest_y, ptr_y, linesize);
538 else{
539 if(bottom_field){
540 dest_y += s->linesize;
541 dest_cb+= s->uvlinesize;
542 dest_cr+= s->uvlinesize;
543 }
544
545 if(field_select){
546 ptr_y += s->linesize;
547 ptr_cb += s->uvlinesize;
548 ptr_cr += s->uvlinesize;
549 }
550 //damn interlaced mode
551 //FIXME boundary mirroring is not exactly correct here
552 qpix_op[1][dxy](dest_y , ptr_y , linesize);
553 qpix_op[1][dxy](dest_y+8, ptr_y+8, linesize);
554 }
555 if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
556 pix_op[1][uvdxy](dest_cr, ptr_cr, uvlinesize, h >> 1);
557 pix_op[1][uvdxy](dest_cb, ptr_cb, uvlinesize, h >> 1);
558 }
559 }
560
561 /**
562 * h263 chroma 4mv motion compensation.
563 */
564 static inline void chroma_4mv_motion(MpegEncContext *s,
565 uint8_t *dest_cb, uint8_t *dest_cr,
566 uint8_t **ref_picture,
567 op_pixels_func *pix_op,
568 int mx, int my){
569 int dxy, emu=0, src_x, src_y, offset;
570 uint8_t *ptr;
571
572 /* In case of 8X8, we construct a single chroma motion vector
573 with a special rounding */
574 mx= ff_h263_round_chroma(mx);
575 my= ff_h263_round_chroma(my);
576
577 dxy = ((my & 1) << 1) | (mx & 1);
578 mx >>= 1;
579 my >>= 1;
580
581 src_x = s->mb_x * 8 + mx;
582 src_y = s->mb_y * 8 + my;
583 src_x = av_clip(src_x, -8, s->width/2);
584 if (src_x == s->width/2)
585 dxy &= ~1;
586 src_y = av_clip(src_y, -8, s->height/2);
587 if (src_y == s->height/2)
588 dxy &= ~2;
589
590 offset = (src_y * (s->uvlinesize)) + src_x;
591 ptr = ref_picture[1] + offset;
592 if(s->flags&CODEC_FLAG_EMU_EDGE){
593 if( (unsigned)src_x > (s->h_edge_pos>>1) - (dxy &1) - 8
594 || (unsigned)src_y > (s->v_edge_pos>>1) - (dxy>>1) - 8){
595 ff_emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize,
596 9, 9, src_x, src_y,
597 s->h_edge_pos>>1, s->v_edge_pos>>1);
598 ptr= s->edge_emu_buffer;
599 emu=1;
600 }
601 }
602 pix_op[dxy](dest_cb, ptr, s->uvlinesize, 8);
603
604 ptr = ref_picture[2] + offset;
605 if(emu){
606 ff_emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize,
607 9, 9, src_x, src_y,
608 s->h_edge_pos>>1, s->v_edge_pos>>1);
609 ptr= s->edge_emu_buffer;
610 }
611 pix_op[dxy](dest_cr, ptr, s->uvlinesize, 8);
612 }
613
614 static inline void prefetch_motion(MpegEncContext *s, uint8_t **pix, int dir){
615 /* fetch pixels for estimated mv 4 macroblocks ahead
616 * optimized for 64byte cache lines */
617 const int shift = s->quarter_sample ? 2 : 1;
618 const int mx= (s->mv[dir][0][0]>>shift) + 16*s->mb_x + 8;
619 const int my= (s->mv[dir][0][1]>>shift) + 16*s->mb_y;
620 int off= mx + (my + (s->mb_x&3)*4)*s->linesize + 64;
621 s->dsp.prefetch(pix[0]+off, s->linesize, 4);
622 off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
623 s->dsp.prefetch(pix[1]+off, pix[2]-pix[1], 2);
624 }
625
626 /**
627 * motion compensation of a single macroblock
628 * @param s context
629 * @param dest_y luma destination pointer
630 * @param dest_cb chroma cb/u destination pointer
631 * @param dest_cr chroma cr/v destination pointer
632 * @param dir direction (0->forward, 1->backward)
633 * @param ref_picture array[3] of pointers to the 3 planes of the reference picture
634 * @param pic_op halfpel motion compensation function (average or put normally)
635 * @param pic_op qpel motion compensation function (average or put normally)
636 * the motion vectors are taken from s->mv and the MV type from s->mv_type
637 */
638 static av_always_inline void MPV_motion_internal(MpegEncContext *s,
639 uint8_t *dest_y, uint8_t *dest_cb,
640 uint8_t *dest_cr, int dir,
641 uint8_t **ref_picture,
642 op_pixels_func (*pix_op)[4],
643 qpel_mc_func (*qpix_op)[16], int is_mpeg12)
644 {
645 int dxy, mx, my, src_x, src_y, motion_x, motion_y;
646 int mb_x, mb_y, i;
647 uint8_t *ptr, *dest;
648
649 mb_x = s->mb_x;
650 mb_y = s->mb_y;
651
652 prefetch_motion(s, ref_picture, dir);
653
654 if(!is_mpeg12 && s->obmc && s->pict_type != FF_B_TYPE){
655 int16_t mv_cache[4][4][2];
656 const int xy= s->mb_x + s->mb_y*s->mb_stride;
657 const int mot_stride= s->b8_stride;
658 const int mot_xy= mb_x*2 + mb_y*2*mot_stride;
659
660 assert(!s->mb_skipped);
661
662 memcpy(mv_cache[1][1], s->current_picture.motion_val[0][mot_xy ], sizeof(int16_t)*4);
663 memcpy(mv_cache[2][1], s->current_picture.motion_val[0][mot_xy+mot_stride], sizeof(int16_t)*4);
664 memcpy(mv_cache[3][1], s->current_picture.motion_val[0][mot_xy+mot_stride], sizeof(int16_t)*4);
665
666 if(mb_y==0 || IS_INTRA(s->current_picture.mb_type[xy-s->mb_stride])){
667 memcpy(mv_cache[0][1], mv_cache[1][1], sizeof(int16_t)*4);
668 }else{
669 memcpy(mv_cache[0][1], s->current_picture.motion_val[0][mot_xy-mot_stride], sizeof(int16_t)*4);
670 }
671
672 if(mb_x==0 || IS_INTRA(s->current_picture.mb_type[xy-1])){
673 *(int32_t*)mv_cache[1][0]= *(int32_t*)mv_cache[1][1];
674 *(int32_t*)mv_cache[2][0]= *(int32_t*)mv_cache[2][1];
675 }else{
676 *(int32_t*)mv_cache[1][0]= *(int32_t*)s->current_picture.motion_val[0][mot_xy-1];
677 *(int32_t*)mv_cache[2][0]= *(int32_t*)s->current_picture.motion_val[0][mot_xy-1+mot_stride];
678 }
679
680 if(mb_x+1>=s->mb_width || IS_INTRA(s->current_picture.mb_type[xy+1])){
681 *(int32_t*)mv_cache[1][3]= *(int32_t*)mv_cache[1][2];
682 *(int32_t*)mv_cache[2][3]= *(int32_t*)mv_cache[2][2];
683 }else{
684 *(int32_t*)mv_cache[1][3]= *(int32_t*)s->current_picture.motion_val[0][mot_xy+2];
685 *(int32_t*)mv_cache[2][3]= *(int32_t*)s->current_picture.motion_val[0][mot_xy+2+mot_stride];
686 }
687
688 mx = 0;
689 my = 0;
690 for(i=0;i<4;i++) {
691 const int x= (i&1)+1;
692 const int y= (i>>1)+1;
693 int16_t mv[5][2]= {
694 {mv_cache[y][x ][0], mv_cache[y][x ][1]},
695 {mv_cache[y-1][x][0], mv_cache[y-1][x][1]},
696 {mv_cache[y][x-1][0], mv_cache[y][x-1][1]},
697 {mv_cache[y][x+1][0], mv_cache[y][x+1][1]},
698 {mv_cache[y+1][x][0], mv_cache[y+1][x][1]}};
699 //FIXME cleanup
700 obmc_motion(s, dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize,
701 ref_picture[0],
702 mb_x * 16 + (i & 1) * 8, mb_y * 16 + (i >>1) * 8,
703 pix_op[1],
704 mv);
705
706 mx += mv[0][0];
707 my += mv[0][1];
708 }
709 if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY))
710 chroma_4mv_motion(s, dest_cb, dest_cr, ref_picture, pix_op[1], mx, my);
711
712 return;
713 }
714
715 switch(s->mv_type) {
716 case MV_TYPE_16X16:
717 if(s->mcsel){
718 if(s->real_sprite_warping_points==1){
719 gmc1_motion(s, dest_y, dest_cb, dest_cr,
720 ref_picture);
721 }else{
722 gmc_motion(s, dest_y, dest_cb, dest_cr,
723 ref_picture);
724 }
725 }else if(!is_mpeg12 && s->quarter_sample){
726 qpel_motion(s, dest_y, dest_cb, dest_cr,
727 0, 0, 0,
728 ref_picture, pix_op, qpix_op,
729 s->mv[dir][0][0], s->mv[dir][0][1], 16);
730 }else if(!is_mpeg12 && CONFIG_WMV2 && s->mspel){
731 ff_mspel_motion(s, dest_y, dest_cb, dest_cr,
732 ref_picture, pix_op,
733 s->mv[dir][0][0], s->mv[dir][0][1], 16);
734 }else
735 {
736 mpeg_motion(s, dest_y, dest_cb, dest_cr,
737 0, 0, 0,
738 ref_picture, pix_op,
739 s->mv[dir][0][0], s->mv[dir][0][1], 16);
740 }
741 break;
742 case MV_TYPE_8X8:
743 if (!is_mpeg12) {
744 mx = 0;
745 my = 0;
746 if(s->quarter_sample){
747 for(i=0;i<4;i++) {
748 motion_x = s->mv[dir][i][0];
749 motion_y = s->mv[dir][i][1];
750
751 dxy = ((motion_y & 3) << 2) | (motion_x & 3);
752 src_x = mb_x * 16 + (motion_x >> 2) + (i & 1) * 8;
753 src_y = mb_y * 16 + (motion_y >> 2) + (i >>1) * 8;
754
755 /* WARNING: do no forget half pels */
756 src_x = av_clip(src_x, -16, s->width);
757 if (src_x == s->width)
758 dxy &= ~3;
759 src_y = av_clip(src_y, -16, s->height);
760 if (src_y == s->height)
761 dxy &= ~12;
762
763 ptr = ref_picture[0] + (src_y * s->linesize) + (src_x);
764 if(s->flags&CODEC_FLAG_EMU_EDGE){
765 if( (unsigned)src_x > s->h_edge_pos - (motion_x&3) - 8
766 || (unsigned)src_y > s->v_edge_pos - (motion_y&3) - 8 ){
767 ff_emulated_edge_mc(s->edge_emu_buffer, ptr,
768 s->linesize, 9, 9,
769 src_x, src_y,
770 s->h_edge_pos, s->v_edge_pos);
771 ptr= s->edge_emu_buffer;
772 }
773 }
774 dest = dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize;
775 qpix_op[1][dxy](dest, ptr, s->linesize);
776
777 mx += s->mv[dir][i][0]/2;
778 my += s->mv[dir][i][1]/2;
779 }
780 }else{
781 for(i=0;i<4;i++) {
782 hpel_motion(s, dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize,
783 ref_picture[0], 0, 0,
784 mb_x * 16 + (i & 1) * 8, mb_y * 16 + (i >>1) * 8,
785 s->width, s->height, s->linesize,
786 s->h_edge_pos, s->v_edge_pos,
787 8, 8, pix_op[1],
788 s->mv[dir][i][0], s->mv[dir][i][1]);
789
790 mx += s->mv[dir][i][0];
791 my += s->mv[dir][i][1];
792 }
793 }
794
795 if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY))
796 chroma_4mv_motion(s, dest_cb, dest_cr, ref_picture, pix_op[1], mx, my);
797 }
798 break;
799 case MV_TYPE_FIELD:
800 if (s->picture_structure == PICT_FRAME) {
801 if(!is_mpeg12 && s->quarter_sample){
802 for(i=0; i<2; i++){
803 qpel_motion(s, dest_y, dest_cb, dest_cr,
804 1, i, s->field_select[dir][i],
805 ref_picture, pix_op, qpix_op,
806 s->mv[dir][i][0], s->mv[dir][i][1], 8);
807 }
808 }else{
809 /* top field */
810 mpeg_motion(s, dest_y, dest_cb, dest_cr,
811 1, 0, s->field_select[dir][0],
812 ref_picture, pix_op,
813 s->mv[dir][0][0], s->mv[dir][0][1], 8);
814 /* bottom field */
815 mpeg_motion(s, dest_y, dest_cb, dest_cr,
816 1, 1, s->field_select[dir][1],
817 ref_picture, pix_op,
818 s->mv[dir][1][0], s->mv[dir][1][1], 8);
819 }
820 } else {
821 if(s->picture_structure != s->field_select[dir][0] + 1 && s->pict_type != FF_B_TYPE && !s->first_field){
822 ref_picture= s->current_picture_ptr->data;
823 }
824
825 mpeg_motion(s, dest_y, dest_cb, dest_cr,
826 0, 0, s->field_select[dir][0],
827 ref_picture, pix_op,
828 s->mv[dir][0][0], s->mv[dir][0][1], 16);
829 }
830 break;
831 case MV_TYPE_16X8:
832 for(i=0; i<2; i++){
833 uint8_t ** ref2picture;
834
835 if(s->picture_structure == s->field_select[dir][i] + 1
836 || s->pict_type == FF_B_TYPE || s->first_field){
837 ref2picture= ref_picture;
838 }else{
839 ref2picture= s->current_picture_ptr->data;
840 }
841
842 mpeg_motion(s, dest_y, dest_cb, dest_cr,
843 0, 0, s->field_select[dir][i],
844 ref2picture, pix_op,
845 s->mv[dir][i][0], s->mv[dir][i][1] + 16*i, 8);
846
847 dest_y += 16*s->linesize;
848 dest_cb+= (16>>s->chroma_y_shift)*s->uvlinesize;
849 dest_cr+= (16>>s->chroma_y_shift)*s->uvlinesize;
850 }
851 break;
852 case MV_TYPE_DMV:
853 if(s->picture_structure == PICT_FRAME){
854 for(i=0; i<2; i++){
855 int j;
856 for(j=0; j<2; j++){
857 mpeg_motion(s, dest_y, dest_cb, dest_cr,
858 1, j, j^i,
859 ref_picture, pix_op,
860 s->mv[dir][2*i + j][0], s->mv[dir][2*i + j][1], 8);
861 }
862 pix_op = s->dsp.avg_pixels_tab;
863 }
864 }else{
865 for(i=0; i<2; i++){
866 mpeg_motion(s, dest_y, dest_cb, dest_cr,
867 0, 0, s->picture_structure != i+1,
868 ref_picture, pix_op,
869 s->mv[dir][2*i][0],s->mv[dir][2*i][1],16);
870
871 // after put we make avg of the same block
872 pix_op=s->dsp.avg_pixels_tab;
873
874 //opposite parity is always in the same frame if this is second field
875 if(!s->first_field){
876 ref_picture = s->current_picture_ptr->data;
877 }
878 }
879 }
880 break;
881 default: assert(0);
882 }
883 }
884
885 static inline void MPV_motion(MpegEncContext *s,
886 uint8_t *dest_y, uint8_t *dest_cb,
887 uint8_t *dest_cr, int dir,
888 uint8_t **ref_picture,
889 op_pixels_func (*pix_op)[4],
890 qpel_mc_func (*qpix_op)[16])
891 {
892 #if !CONFIG_SMALL
893 if(s->out_format == FMT_MPEG1)
894 MPV_motion_internal(s, dest_y, dest_cb, dest_cr, dir,
895 ref_picture, pix_op, qpix_op, 1);
896 else
897 #endif
898 MPV_motion_internal(s, dest_y, dest_cb, dest_cr, dir,
899 ref_picture, pix_op, qpix_op, 0);
900 }
901 #endif /* AVCODEC_MPEGVIDEO_COMMON_H */
ffmpeg Lagarith lossless decoder