correct mpeg4 vo type
[libav.git] / libavcodec / utils.c
CommitLineData
de6d9b64
FB
1/*
2 * utils for libavcodec
ff4ec49e 3 * Copyright (c) 2001 Fabrice Bellard.
de6d9b64 4 *
ff4ec49e
FB
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
de6d9b64 9 *
ff4ec49e 10 * This library is distributed in the hope that it will be useful,
de6d9b64 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
ff4ec49e
FB
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
de6d9b64 14 *
ff4ec49e
FB
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
de6d9b64 18 */
de6d9b64 19#include "avcodec.h"
3123dd79 20#include "dsputil.h"
1c2a8c7f 21#include "mpegvideo.h"
de6d9b64 22
18f77016 23void *av_mallocz(unsigned int size)
3123dd79
FB
24{
25 void *ptr;
5b20b732
MN
26
27 if(size == 0) fprintf(stderr, "Warning, allocating 0 bytes\n");
28
3123dd79
FB
29 ptr = av_malloc(size);
30 if (!ptr)
31 return NULL;
32 memset(ptr, 0, size);
33 return ptr;
34}
35
855ea723
ZK
36/* allocation of static arrays - do not use for normal allocation */
37static unsigned int last_static = 0;
38static char*** array_static = NULL;
39static const unsigned int grow_static = 64; // ^2
40void *__av_mallocz_static(void** location, unsigned int size)
41{
42 int l = (last_static + grow_static) & ~(grow_static - 1);
43 void *ptr = av_mallocz(size);
44 if (!ptr)
45 return NULL;
46
47 if (location)
48 {
49 if (l > last_static)
50 array_static = realloc(array_static, l);
51 array_static[last_static++] = (char**) location;
52 *location = ptr;
53 }
54 return ptr;
55}
56/* free all static arrays and reset pointers to 0 */
57void av_free_static()
58{
59 if (array_static)
60 {
61 unsigned i;
62 for (i = 0; i < last_static; i++)
63 {
64 free(*array_static[i]);
65 *array_static[i] = NULL;
66 }
67 free(array_static);
68 array_static = 0;
69 }
70 last_static = 0;
71}
72
4d7a0a05
FB
73/* cannot call it directly because of 'void **' casting is not automatic */
74void __av_freep(void **ptr)
75{
76 av_free(*ptr);
77 *ptr = NULL;
78}
79
de6d9b64
FB
80/* encoder management */
81AVCodec *first_avcodec;
82
83void register_avcodec(AVCodec *format)
84{
85 AVCodec **p;
86 p = &first_avcodec;
87 while (*p != NULL) p = &(*p)->next;
88 *p = format;
89 format->next = NULL;
90}
91
1e491e29
MN
92void avcodec_get_chroma_sub_sample(int fmt, int *h_shift, int *v_shift){
93 switch(fmt){
94 case PIX_FMT_YUV410P:
95 *h_shift=2;
96 *v_shift=2;
97 break;
98 case PIX_FMT_YUV420P:
99 *h_shift=1;
100 *v_shift=1;
101 break;
102 case PIX_FMT_YUV411P:
103 *h_shift=2;
104 *v_shift=0;
105 break;
106 case PIX_FMT_YUV422P:
107 case PIX_FMT_YUV422:
108 *h_shift=1;
109 *v_shift=0;
110 break;
111 default: //RGB/...
112 *h_shift=0;
113 *v_shift=0;
114 break;
115 }
116}
117
118typedef struct DefaultPicOpaque{
119 int last_pic_num;
120 uint8_t *data[4];
121}DefaultPicOpaque;
122
123int avcodec_default_get_buffer(AVCodecContext *s, AVVideoFrame *pic){
124 int i;
125 const int width = s->width;
126 const int height= s->height;
127 DefaultPicOpaque *opaque;
128
129 if(pic->opaque){
130 opaque= (DefaultPicOpaque *)pic->opaque;
131 for(i=0; i<3; i++)
132 pic->data[i]= opaque->data[i];
133
134// printf("get_buffer %X coded_pic_num:%d last:%d\n", pic->opaque, pic->coded_picture_number, opaque->last_pic_num);
135 pic->age= pic->coded_picture_number - opaque->last_pic_num;
136 opaque->last_pic_num= pic->coded_picture_number;
137//printf("age: %d %d %d\n", pic->age, c->picture_number, pic->coded_picture_number);
138 }else{
139 int align, h_chroma_shift, v_chroma_shift;
140 int w, h, pixel_size;
141
142 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
143
144 switch(s->pix_fmt){
145 case PIX_FMT_YUV422:
146 pixel_size=2;
147 break;
148 case PIX_FMT_RGB24:
149 case PIX_FMT_BGR24:
150 pixel_size=3;
151 break;
152 case PIX_FMT_BGRA32:
153 case PIX_FMT_RGBA32:
154 pixel_size=4;
155 break;
156 default:
157 pixel_size=1;
158 }
159
160 if(s->codec_id==CODEC_ID_SVQ1) align=63;
161 else align=15;
162
163 w= (width +align)&~align;
164 h= (height+align)&~align;
165
166 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
167 w+= EDGE_WIDTH*2;
168 h+= EDGE_WIDTH*2;
169 }
170
171 opaque= av_mallocz(sizeof(DefaultPicOpaque));
172 if(opaque==NULL) return -1;
173
174 pic->opaque= opaque;
175 opaque->last_pic_num= -256*256*256*64;
176
177 for(i=0; i<3; i++){
178 int h_shift= i==0 ? 0 : h_chroma_shift;
179 int v_shift= i==0 ? 0 : v_chroma_shift;
180
181 pic->linesize[i]= pixel_size*w>>h_shift;
182
183 pic->base[i]= av_mallocz((pic->linesize[i]*h>>v_shift)+16); //FIXME 16
184 if(pic->base[i]==NULL) return -1;
185
186 memset(pic->base[i], 128, pic->linesize[i]*h>>v_shift);
187
188 if(s->flags&CODEC_FLAG_EMU_EDGE)
189 pic->data[i] = pic->base[i];
190 else
191 pic->data[i] = pic->base[i] + (pic->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift);
192
193 opaque->data[i]= pic->data[i];
194 }
195 pic->age= 256*256*256*64;
196 }
197
198 return 0;
199}
200
201void avcodec_default_release_buffer(AVCodecContext *s, AVVideoFrame *pic){
202 int i;
203
204 for(i=0; i<3; i++)
205 pic->data[i]=NULL;
206//printf("R%X\n", pic->opaque);
207}
208
a949d72e 209void avcodec_get_context_defaults(AVCodecContext *s){
e8b62df6
MN
210 s->bit_rate= 800*1000;
211 s->bit_rate_tolerance= s->bit_rate*10;
a949d72e
MN
212 s->qmin= 2;
213 s->qmax= 31;
214 s->rc_eq= "tex^qComp";
215 s->qcompress= 0.5;
e8b62df6
MN
216 s->max_qdiff= 3;
217 s->b_quant_factor=1.25;
218 s->b_quant_offset=1.25;
b3a391e8 219 s->i_quant_factor=-0.8;
e8b62df6 220 s->i_quant_offset=0.0;
4d2858de 221 s->error_concealment= 3;
8d0e42ca 222 s->error_resilience= 1;
4d2858de 223 s->workaround_bugs= FF_BUG_AUTODETECT;
8d0e42ca
MN
224 s->frame_rate = 25 * FRAME_RATE_BASE;
225 s->gop_size= 50;
226 s->me_method= ME_EPZS;
1e491e29
MN
227 s->get_buffer= avcodec_default_get_buffer;
228 s->release_buffer= avcodec_default_release_buffer;
a949d72e
MN
229}
230
231/**
232 * allocates a AVCodecContext and set it to defaults.
233 * this can be deallocated by simply calling free()
234 */
7ffbb60e 235AVCodecContext *avcodec_alloc_context(void){
a949d72e
MN
236 AVCodecContext *avctx= av_mallocz(sizeof(AVCodecContext));
237
238 if(avctx==NULL) return NULL;
239
240 avcodec_get_context_defaults(avctx);
241
242 return avctx;
243}
244
1e491e29
MN
245/**
246 * allocates a AVPicture and set it to defaults.
247 * this can be deallocated by simply calling free()
248 */
249AVVideoFrame *avcodec_alloc_picture(void){
250 AVVideoFrame *pic= av_mallocz(sizeof(AVVideoFrame));
251
252 return pic;
253}
254
de6d9b64
FB
255int avcodec_open(AVCodecContext *avctx, AVCodec *codec)
256{
257 int ret;
258
259 avctx->codec = codec;
260 avctx->frame_number = 0;
0edf8a7a
PG
261 if (codec->priv_data_size > 0) {
262 avctx->priv_data = av_mallocz(codec->priv_data_size);
263 if (!avctx->priv_data)
264 return -ENOMEM;
265 } else {
266 avctx->priv_data = NULL;
267 }
de6d9b64
FB
268 ret = avctx->codec->init(avctx);
269 if (ret < 0) {
3123dd79 270 av_freep(&avctx->priv_data);
de6d9b64
FB
271 return ret;
272 }
273 return 0;
274}
275
276int avcodec_encode_audio(AVCodecContext *avctx, UINT8 *buf, int buf_size,
277 const short *samples)
278{
279 int ret;
280
281 ret = avctx->codec->encode(avctx, buf, buf_size, (void *)samples);
282 avctx->frame_number++;
283 return ret;
284}
285
286int avcodec_encode_video(AVCodecContext *avctx, UINT8 *buf, int buf_size,
1e491e29 287 const AVVideoFrame *pict)
de6d9b64
FB
288{
289 int ret;
290
291 ret = avctx->codec->encode(avctx, buf, buf_size, (void *)pict);
6bb925f4
MN
292
293 emms_c(); //needed to avoid a emms_c() call before every return;
294
de6d9b64
FB
295 avctx->frame_number++;
296 return ret;
297}
298
299/* decode a frame. return -1 if error, otherwise return the number of
300 bytes used. If no frame could be decompressed, *got_picture_ptr is
301 zero. Otherwise, it is non zero */
1e491e29 302int avcodec_decode_video(AVCodecContext *avctx, AVVideoFrame *picture,
de6d9b64
FB
303 int *got_picture_ptr,
304 UINT8 *buf, int buf_size)
305{
306 int ret;
1e491e29 307
de6d9b64
FB
308 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
309 buf, buf_size);
6bb925f4
MN
310
311 emms_c(); //needed to avoid a emms_c() call before every return;
1e491e29 312
1cb0edb4
J
313 if (*got_picture_ptr)
314 avctx->frame_number++;
de6d9b64
FB
315 return ret;
316}
317
318/* decode an audio frame. return -1 if error, otherwise return the
319 *number of bytes used. If no frame could be decompressed,
320 *frame_size_ptr is zero. Otherwise, it is the decompressed frame
321 *size in BYTES. */
322int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples,
323 int *frame_size_ptr,
324 UINT8 *buf, int buf_size)
325{
326 int ret;
327
328 ret = avctx->codec->decode(avctx, samples, frame_size_ptr,
329 buf, buf_size);
330 avctx->frame_number++;
331 return ret;
332}
333
334int avcodec_close(AVCodecContext *avctx)
335{
336 if (avctx->codec->close)
337 avctx->codec->close(avctx);
3123dd79 338 av_freep(&avctx->priv_data);
de6d9b64
FB
339 avctx->codec = NULL;
340 return 0;
341}
342
343AVCodec *avcodec_find_encoder(enum CodecID id)
344{
345 AVCodec *p;
346 p = first_avcodec;
347 while (p) {
348 if (p->encode != NULL && p->id == id)
349 return p;
350 p = p->next;
351 }
352 return NULL;
353}
354
98f3b098
A
355AVCodec *avcodec_find_encoder_by_name(const char *name)
356{
357 AVCodec *p;
358 p = first_avcodec;
359 while (p) {
360 if (p->encode != NULL && strcmp(name,p->name) == 0)
361 return p;
362 p = p->next;
363 }
364 return NULL;
365}
366
de6d9b64
FB
367AVCodec *avcodec_find_decoder(enum CodecID id)
368{
369 AVCodec *p;
370 p = first_avcodec;
371 while (p) {
372 if (p->decode != NULL && p->id == id)
373 return p;
374 p = p->next;
375 }
376 return NULL;
377}
378
379AVCodec *avcodec_find_decoder_by_name(const char *name)
380{
381 AVCodec *p;
382 p = first_avcodec;
383 while (p) {
384 if (p->decode != NULL && strcmp(name,p->name) == 0)
385 return p;
386 p = p->next;
387 }
388 return NULL;
389}
390
391AVCodec *avcodec_find(enum CodecID id)
392{
393 AVCodec *p;
394 p = first_avcodec;
395 while (p) {
396 if (p->id == id)
397 return p;
398 p = p->next;
399 }
400 return NULL;
401}
402
cf087595
FB
403const char *pix_fmt_str[] = {
404 "yuv420p",
405 "yuv422",
406 "rgb24",
407 "bgr24",
408 "yuv422p",
409 "yuv444p",
b71472eb
PG
410 "rgba32",
411 "bgra32",
a5e88058
FB
412 "yuv410p",
413 "yuv411p",
cf087595 414};
a5e88058 415
de6d9b64
FB
416void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
417{
418 const char *codec_name;
419 AVCodec *p;
420 char buf1[32];
623563c0 421 char channels_str[100];
a96b68b7 422 int bitrate;
de6d9b64
FB
423
424 if (encode)
425 p = avcodec_find_encoder(enc->codec_id);
426 else
427 p = avcodec_find_decoder(enc->codec_id);
428
429 if (p) {
430 codec_name = p->name;
431 } else if (enc->codec_name[0] != '\0') {
432 codec_name = enc->codec_name;
433 } else {
434 /* output avi tags */
435 if (enc->codec_type == CODEC_TYPE_VIDEO) {
436 snprintf(buf1, sizeof(buf1), "%c%c%c%c",
437 enc->codec_tag & 0xff,
438 (enc->codec_tag >> 8) & 0xff,
439 (enc->codec_tag >> 16) & 0xff,
440 (enc->codec_tag >> 24) & 0xff);
441 } else {
442 snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);
443 }
444 codec_name = buf1;
445 }
446
447 switch(enc->codec_type) {
448 case CODEC_TYPE_VIDEO:
449 snprintf(buf, buf_size,
450 "Video: %s%s",
451 codec_name, enc->flags & CODEC_FLAG_HQ ? " (hq)" : "");
cf087595
FB
452 if (enc->codec_id == CODEC_ID_RAWVIDEO) {
453 snprintf(buf + strlen(buf), buf_size - strlen(buf),
454 ", %s",
455 pix_fmt_str[enc->pix_fmt]);
456 }
de6d9b64
FB
457 if (enc->width) {
458 snprintf(buf + strlen(buf), buf_size - strlen(buf),
459 ", %dx%d, %0.2f fps",
460 enc->width, enc->height,
461 (float)enc->frame_rate / FRAME_RATE_BASE);
462 }
4bfad535
FB
463 if (encode) {
464 snprintf(buf + strlen(buf), buf_size - strlen(buf),
465 ", q=%d-%d", enc->qmin, enc->qmax);
466 }
a96b68b7 467 bitrate = enc->bit_rate;
de6d9b64
FB
468 break;
469 case CODEC_TYPE_AUDIO:
470 snprintf(buf, buf_size,
471 "Audio: %s",
472 codec_name);
e0d2714a
J
473 switch (enc->channels) {
474 case 1:
623563c0 475 strcpy(channels_str, "mono");
e0d2714a
J
476 break;
477 case 2:
623563c0 478 strcpy(channels_str, "stereo");
e0d2714a
J
479 break;
480 case 6:
623563c0 481 strcpy(channels_str, "5:1");
e0d2714a
J
482 break;
483 default:
484 sprintf(channels_str, "%d channels", enc->channels);
485 break;
486 }
de6d9b64
FB
487 if (enc->sample_rate) {
488 snprintf(buf + strlen(buf), buf_size - strlen(buf),
489 ", %d Hz, %s",
490 enc->sample_rate,
e0d2714a 491 channels_str);
de6d9b64 492 }
e0d2714a 493
a96b68b7
FB
494 /* for PCM codecs, compute bitrate directly */
495 switch(enc->codec_id) {
496 case CODEC_ID_PCM_S16LE:
497 case CODEC_ID_PCM_S16BE:
498 case CODEC_ID_PCM_U16LE:
499 case CODEC_ID_PCM_U16BE:
a190b7e9 500 bitrate = enc->sample_rate * enc->channels * 16;
a96b68b7
FB
501 break;
502 case CODEC_ID_PCM_S8:
503 case CODEC_ID_PCM_U8:
504 case CODEC_ID_PCM_ALAW:
505 case CODEC_ID_PCM_MULAW:
a190b7e9 506 bitrate = enc->sample_rate * enc->channels * 8;
a96b68b7
FB
507 break;
508 default:
509 bitrate = enc->bit_rate;
510 break;
511 }
de6d9b64
FB
512 break;
513 default:
b71472eb 514 av_abort();
de6d9b64 515 }
4bfad535
FB
516 if (encode) {
517 if (enc->flags & CODEC_FLAG_PASS1)
518 snprintf(buf + strlen(buf), buf_size - strlen(buf),
519 ", pass 1");
520 if (enc->flags & CODEC_FLAG_PASS2)
521 snprintf(buf + strlen(buf), buf_size - strlen(buf),
522 ", pass 2");
523 }
a96b68b7 524 if (bitrate != 0) {
de6d9b64 525 snprintf(buf + strlen(buf), buf_size - strlen(buf),
a96b68b7 526 ", %d kb/s", bitrate / 1000);
de6d9b64
FB
527 }
528}
529
cf087595
FB
530/* Picture field are filled with 'ptr' addresses */
531void avpicture_fill(AVPicture *picture, UINT8 *ptr,
532 int pix_fmt, int width, int height)
533{
534 int size;
535
536 size = width * height;
537 switch(pix_fmt) {
538 case PIX_FMT_YUV420P:
539 picture->data[0] = ptr;
540 picture->data[1] = picture->data[0] + size;
541 picture->data[2] = picture->data[1] + size / 4;
542 picture->linesize[0] = width;
543 picture->linesize[1] = width / 2;
544 picture->linesize[2] = width / 2;
545 break;
546 case PIX_FMT_YUV422P:
547 picture->data[0] = ptr;
548 picture->data[1] = picture->data[0] + size;
549 picture->data[2] = picture->data[1] + size / 2;
550 picture->linesize[0] = width;
551 picture->linesize[1] = width / 2;
552 picture->linesize[2] = width / 2;
553 break;
554 case PIX_FMT_YUV444P:
555 picture->data[0] = ptr;
556 picture->data[1] = picture->data[0] + size;
557 picture->data[2] = picture->data[1] + size;
558 picture->linesize[0] = width;
559 picture->linesize[1] = width;
560 picture->linesize[2] = width;
561 break;
562 case PIX_FMT_RGB24:
563 case PIX_FMT_BGR24:
564 picture->data[0] = ptr;
565 picture->data[1] = NULL;
566 picture->data[2] = NULL;
567 picture->linesize[0] = width * 3;
568 break;
b71472eb
PG
569 case PIX_FMT_RGBA32:
570 case PIX_FMT_BGRA32:
571 picture->data[0] = ptr;
572 picture->data[1] = NULL;
573 picture->data[2] = NULL;
574 picture->linesize[0] = width * 4;
575 break;
cf087595
FB
576 case PIX_FMT_YUV422:
577 picture->data[0] = ptr;
578 picture->data[1] = NULL;
579 picture->data[2] = NULL;
580 picture->linesize[0] = width * 2;
581 break;
582 default:
583 picture->data[0] = NULL;
584 picture->data[1] = NULL;
585 picture->data[2] = NULL;
586 break;
587 }
588}
589
590int avpicture_get_size(int pix_fmt, int width, int height)
591{
592 int size;
593
594 size = width * height;
595 switch(pix_fmt) {
596 case PIX_FMT_YUV420P:
597 size = (size * 3) / 2;
598 break;
599 case PIX_FMT_YUV422P:
600 size = (size * 2);
601 break;
602 case PIX_FMT_YUV444P:
603 size = (size * 3);
604 break;
605 case PIX_FMT_RGB24:
606 case PIX_FMT_BGR24:
607 size = (size * 3);
608 break;
b71472eb
PG
609 case PIX_FMT_RGBA32:
610 case PIX_FMT_BGRA32:
611 size = (size * 4);
612 break;
cf087595
FB
613 case PIX_FMT_YUV422:
614 size = (size * 2);
615 break;
616 default:
617 size = -1;
618 break;
619 }
620 return size;
621}
622
156e5023
NK
623unsigned avcodec_version( void )
624{
625 return LIBAVCODEC_VERSION_INT;
626}
cf087595 627
8bceb6af
NK
628unsigned avcodec_build( void )
629{
630 return LIBAVCODEC_BUILD;
631}
632
de6d9b64
FB
633/* must be called before any other functions */
634void avcodec_init(void)
635{
0344cd0a
AB
636 static int inited = 0;
637
638 if (inited != 0)
639 return;
640 inited = 1;
641
c6af86c2 642 //dsputil_init();
de6d9b64
FB
643}
644
1c2a8c7f
MN
645/* this should be called after seeking and before trying to decode the next frame */
646void avcodec_flush_buffers(AVCodecContext *avctx)
647{
648 MpegEncContext *s = avctx->priv_data;
649 s->num_available_buffers=0;
650}
651
652
cd4af68a 653static int raw_encode_init(AVCodecContext *s)
de6d9b64
FB
654{
655 return 0;
656}
657
cd4af68a
ZK
658static int raw_decode_frame(AVCodecContext *avctx,
659 void *data, int *data_size,
660 UINT8 *buf, int buf_size)
de6d9b64
FB
661{
662 return -1;
663}
664
cd4af68a
ZK
665static int raw_encode_frame(AVCodecContext *avctx,
666 unsigned char *frame, int buf_size, void *data)
de6d9b64
FB
667{
668 return -1;
669}
670
de6d9b64
FB
671AVCodec rawvideo_codec = {
672 "rawvideo",
673 CODEC_TYPE_VIDEO,
674 CODEC_ID_RAWVIDEO,
675 0,
cd4af68a
ZK
676 raw_encode_init,
677 raw_encode_frame,
de6d9b64 678 NULL,
cd4af68a 679 raw_decode_frame,
de6d9b64 680};