changing AVCodecContext codec -> *codec in AVStream so additions to AVCodecContext...
[libav.git] / libavformat / raw.c
1 /*
2 * RAW encoder and decoder
3 * Copyright (c) 2001 Fabrice Bellard.
4 *
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.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
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
18 */
19 #include "avformat.h"
20
21 #ifdef CONFIG_ENCODERS
22 /* simple formats */
23 static int raw_write_header(struct AVFormatContext *s)
24 {
25 return 0;
26 }
27
28 static int raw_write_packet(struct AVFormatContext *s, AVPacket *pkt)
29 {
30 put_buffer(&s->pb, pkt->data, pkt->size);
31 put_flush_packet(&s->pb);
32 return 0;
33 }
34
35 static int raw_write_trailer(struct AVFormatContext *s)
36 {
37 return 0;
38 }
39 #endif //CONFIG_ENCODERS
40
41 /* raw input */
42 static int raw_read_header(AVFormatContext *s, AVFormatParameters *ap)
43 {
44 AVStream *st;
45 int id;
46
47 st = av_new_stream(s, 0);
48 if (!st)
49 return AVERROR_NOMEM;
50 if (ap) {
51 id = s->iformat->value;
52 if (id == CODEC_ID_RAWVIDEO) {
53 st->codec->codec_type = CODEC_TYPE_VIDEO;
54 } else {
55 st->codec->codec_type = CODEC_TYPE_AUDIO;
56 }
57 st->codec->codec_id = id;
58
59 switch(st->codec->codec_type) {
60 case CODEC_TYPE_AUDIO:
61 st->codec->sample_rate = ap->sample_rate;
62 st->codec->channels = ap->channels;
63 av_set_pts_info(st, 64, 1, st->codec->sample_rate);
64 break;
65 case CODEC_TYPE_VIDEO:
66 av_set_pts_info(st, 64, ap->time_base.num, ap->time_base.den);
67 st->codec->width = ap->width;
68 st->codec->height = ap->height;
69 st->codec->pix_fmt = ap->pix_fmt;
70 if(st->codec->pix_fmt == PIX_FMT_NONE)
71 st->codec->pix_fmt= PIX_FMT_YUV420P;
72 break;
73 default:
74 return -1;
75 }
76 } else {
77 return -1;
78 }
79 return 0;
80 }
81
82 #define RAW_PACKET_SIZE 1024
83
84 static int raw_read_packet(AVFormatContext *s, AVPacket *pkt)
85 {
86 int ret, size;
87 // AVStream *st = s->streams[0];
88
89 size= RAW_PACKET_SIZE;
90
91 ret= av_get_packet(&s->pb, pkt, size);
92
93 pkt->stream_index = 0;
94 if (ret <= 0) {
95 return AVERROR_IO;
96 }
97 /* note: we need to modify the packet size here to handle the last
98 packet */
99 pkt->size = ret;
100 return ret;
101 }
102
103 static int raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt)
104 {
105 int ret, size;
106
107 size = RAW_PACKET_SIZE;
108
109 if (av_new_packet(pkt, size) < 0)
110 return AVERROR_IO;
111
112 pkt->pos= url_ftell(&s->pb);
113 pkt->stream_index = 0;
114 ret = get_partial_buffer(&s->pb, pkt->data, size);
115 if (ret <= 0) {
116 av_free_packet(pkt);
117 return AVERROR_IO;
118 }
119 pkt->size = ret;
120 return ret;
121 }
122
123 static int raw_read_close(AVFormatContext *s)
124 {
125 return 0;
126 }
127
128 int pcm_read_seek(AVFormatContext *s,
129 int stream_index, int64_t timestamp, int flags)
130 {
131 AVStream *st;
132 int block_align, byte_rate;
133 int64_t pos;
134
135 st = s->streams[0];
136 switch(st->codec->codec_id) {
137 case CODEC_ID_PCM_S16LE:
138 case CODEC_ID_PCM_S16BE:
139 case CODEC_ID_PCM_U16LE:
140 case CODEC_ID_PCM_U16BE:
141 block_align = 2 * st->codec->channels;
142 byte_rate = block_align * st->codec->sample_rate;
143 break;
144 case CODEC_ID_PCM_S8:
145 case CODEC_ID_PCM_U8:
146 case CODEC_ID_PCM_MULAW:
147 case CODEC_ID_PCM_ALAW:
148 block_align = st->codec->channels;
149 byte_rate = block_align * st->codec->sample_rate;
150 break;
151 default:
152 block_align = st->codec->block_align;
153 byte_rate = st->codec->bit_rate / 8;
154 break;
155 }
156
157 if (block_align <= 0 || byte_rate <= 0)
158 return -1;
159
160 /* compute the position by aligning it to block_align */
161 pos = av_rescale_rnd(timestamp * byte_rate,
162 st->time_base.num,
163 st->time_base.den * (int64_t)block_align,
164 (flags & AVSEEK_FLAG_BACKWARD) ? AV_ROUND_DOWN : AV_ROUND_UP);
165 pos *= block_align;
166
167 /* recompute exact position */
168 st->cur_dts = av_rescale(pos, st->time_base.den, byte_rate * (int64_t)st->time_base.num);
169 url_fseek(&s->pb, pos + s->data_offset, SEEK_SET);
170 return 0;
171 }
172
173 /* ac3 read */
174 static int ac3_read_header(AVFormatContext *s,
175 AVFormatParameters *ap)
176 {
177 AVStream *st;
178
179 st = av_new_stream(s, 0);
180 if (!st)
181 return AVERROR_NOMEM;
182
183 st->codec->codec_type = CODEC_TYPE_AUDIO;
184 st->codec->codec_id = CODEC_ID_AC3;
185 st->need_parsing = 1;
186 /* the parameters will be extracted from the compressed bitstream */
187 return 0;
188 }
189
190 static int shorten_read_header(AVFormatContext *s,
191 AVFormatParameters *ap)
192 {
193 AVStream *st;
194
195 st = av_new_stream(s, 0);
196 if (!st)
197 return AVERROR_NOMEM;
198 st->codec->codec_type = CODEC_TYPE_AUDIO;
199 st->codec->codec_id = CODEC_ID_SHORTEN;
200 st->need_parsing = 1;
201 /* the parameters will be extracted from the compressed bitstream */
202 return 0;
203 }
204
205 /* dts read */
206 static int dts_read_header(AVFormatContext *s,
207 AVFormatParameters *ap)
208 {
209 AVStream *st;
210
211 st = av_new_stream(s, 0);
212 if (!st)
213 return AVERROR_NOMEM;
214
215 st->codec->codec_type = CODEC_TYPE_AUDIO;
216 st->codec->codec_id = CODEC_ID_DTS;
217 st->need_parsing = 1;
218 /* the parameters will be extracted from the compressed bitstream */
219 return 0;
220 }
221
222 /* mpeg1/h263 input */
223 static int video_read_header(AVFormatContext *s,
224 AVFormatParameters *ap)
225 {
226 AVStream *st;
227
228 st = av_new_stream(s, 0);
229 if (!st)
230 return AVERROR_NOMEM;
231
232 st->codec->codec_type = CODEC_TYPE_VIDEO;
233 st->codec->codec_id = s->iformat->value;
234 st->need_parsing = 1;
235
236 /* for mjpeg, specify frame rate */
237 /* for mpeg4 specify it too (most mpeg4 streams dont have the fixed_vop_rate set ...)*/
238 if (ap && ap->time_base.num) {
239 av_set_pts_info(st, 64, ap->time_base.num, ap->time_base.den);
240 } else if ( st->codec->codec_id == CODEC_ID_MJPEG ||
241 st->codec->codec_id == CODEC_ID_MPEG4 ||
242 st->codec->codec_id == CODEC_ID_H264) {
243 av_set_pts_info(st, 64, 1, 25);
244 }
245
246 return 0;
247 }
248
249 #define SEQ_START_CODE 0x000001b3
250 #define GOP_START_CODE 0x000001b8
251 #define PICTURE_START_CODE 0x00000100
252
253 /* XXX: improve that by looking at several start codes */
254 static int mpegvideo_probe(AVProbeData *p)
255 {
256 int code;
257 const uint8_t *d;
258
259 /* we search the first start code. If it is a sequence, gop or
260 picture start code then we decide it is an mpeg video
261 stream. We do not send highest value to give a chance to mpegts */
262 /* NOTE: the search range was restricted to avoid too many false
263 detections */
264
265 if (p->buf_size < 6)
266 return 0;
267 d = p->buf;
268 code = (d[0] << 24) | (d[1] << 16) | (d[2] << 8) | (d[3]);
269 if ((code & 0xffffff00) == 0x100) {
270 if (code == SEQ_START_CODE ||
271 code == GOP_START_CODE ||
272 code == PICTURE_START_CODE)
273 return 50 - 1;
274 else
275 return 0;
276 }
277 return 0;
278 }
279
280 static int h263_probe(AVProbeData *p)
281 {
282 int code;
283 const uint8_t *d;
284
285 if (p->buf_size < 6)
286 return 0;
287 d = p->buf;
288 code = (d[0] << 14) | (d[1] << 6) | (d[2] >> 2);
289 if (code == 0x20) {
290 return 50;
291 }
292 return 0;
293 }
294
295 static int h261_probe(AVProbeData *p)
296 {
297 int code;
298 const uint8_t *d;
299
300 if (p->buf_size < 6)
301 return 0;
302 d = p->buf;
303 code = (d[0] << 12) | (d[1] << 4) | (d[2] >> 4);
304 if (code == 0x10) {
305 return 50;
306 }
307 return 0;
308 }
309
310 AVInputFormat shorten_iformat = {
311 "shn",
312 "raw shn",
313 0,
314 NULL,
315 shorten_read_header,
316 raw_read_partial_packet,
317 raw_read_close,
318 .extensions = "shn",
319 };
320
321 AVInputFormat ac3_iformat = {
322 "ac3",
323 "raw ac3",
324 0,
325 NULL,
326 ac3_read_header,
327 raw_read_partial_packet,
328 raw_read_close,
329 .extensions = "ac3",
330 };
331
332 #ifdef CONFIG_ENCODERS
333 AVOutputFormat ac3_oformat = {
334 "ac3",
335 "raw ac3",
336 "audio/x-ac3",
337 "ac3",
338 0,
339 CODEC_ID_AC3,
340 0,
341 raw_write_header,
342 raw_write_packet,
343 raw_write_trailer,
344 };
345 #endif //CONFIG_ENCODERS
346
347 AVInputFormat dts_iformat = {
348 "dts",
349 "raw dts",
350 0,
351 NULL,
352 dts_read_header,
353 raw_read_partial_packet,
354 raw_read_close,
355 .extensions = "dts",
356 };
357
358 AVInputFormat h261_iformat = {
359 "h261",
360 "raw h261",
361 0,
362 h261_probe,
363 video_read_header,
364 raw_read_partial_packet,
365 raw_read_close,
366 .extensions = "h261",
367 .value = CODEC_ID_H261,
368 };
369
370 #ifdef CONFIG_ENCODERS
371 AVOutputFormat h261_oformat = {
372 "h261",
373 "raw h261",
374 "video/x-h261",
375 "h261",
376 0,
377 0,
378 CODEC_ID_H261,
379 raw_write_header,
380 raw_write_packet,
381 raw_write_trailer,
382 };
383 #endif //CONFIG_ENCODERS
384
385 AVInputFormat h263_iformat = {
386 "h263",
387 "raw h263",
388 0,
389 h263_probe,
390 video_read_header,
391 raw_read_partial_packet,
392 raw_read_close,
393 // .extensions = "h263", //FIXME remove after writing mpeg4_probe
394 .value = CODEC_ID_H263,
395 };
396
397 #ifdef CONFIG_ENCODERS
398 AVOutputFormat h263_oformat = {
399 "h263",
400 "raw h263",
401 "video/x-h263",
402 "h263",
403 0,
404 0,
405 CODEC_ID_H263,
406 raw_write_header,
407 raw_write_packet,
408 raw_write_trailer,
409 };
410 #endif //CONFIG_ENCODERS
411
412 AVInputFormat m4v_iformat = {
413 "m4v",
414 "raw MPEG4 video format",
415 0,
416 NULL /*mpegvideo_probe*/,
417 video_read_header,
418 raw_read_partial_packet,
419 raw_read_close,
420 .extensions = "m4v", //FIXME remove after writing mpeg4_probe
421 .value = CODEC_ID_MPEG4,
422 };
423
424 #ifdef CONFIG_ENCODERS
425 AVOutputFormat m4v_oformat = {
426 "m4v",
427 "raw MPEG4 video format",
428 NULL,
429 "m4v",
430 0,
431 CODEC_ID_NONE,
432 CODEC_ID_MPEG4,
433 raw_write_header,
434 raw_write_packet,
435 raw_write_trailer,
436 };
437 #endif //CONFIG_ENCODERS
438
439 AVInputFormat h264_iformat = {
440 "h264",
441 "raw H264 video format",
442 0,
443 NULL /*mpegvideo_probe*/,
444 video_read_header,
445 raw_read_partial_packet,
446 raw_read_close,
447 .extensions = "h26l,h264,264", //FIXME remove after writing mpeg4_probe
448 .value = CODEC_ID_H264,
449 };
450
451 #ifdef CONFIG_ENCODERS
452 AVOutputFormat h264_oformat = {
453 "h264",
454 "raw H264 video format",
455 NULL,
456 "h264",
457 0,
458 CODEC_ID_NONE,
459 CODEC_ID_H264,
460 raw_write_header,
461 raw_write_packet,
462 raw_write_trailer,
463 };
464 #endif //CONFIG_ENCODERS
465
466 AVInputFormat mpegvideo_iformat = {
467 "mpegvideo",
468 "MPEG video",
469 0,
470 mpegvideo_probe,
471 video_read_header,
472 raw_read_partial_packet,
473 raw_read_close,
474 .value = CODEC_ID_MPEG1VIDEO,
475 };
476
477 #ifdef CONFIG_ENCODERS
478 AVOutputFormat mpeg1video_oformat = {
479 "mpeg1video",
480 "MPEG video",
481 "video/x-mpeg",
482 "mpg,mpeg,m1v",
483 0,
484 0,
485 CODEC_ID_MPEG1VIDEO,
486 raw_write_header,
487 raw_write_packet,
488 raw_write_trailer,
489 };
490 #endif //CONFIG_ENCODERS
491
492 #ifdef CONFIG_ENCODERS
493 AVOutputFormat mpeg2video_oformat = {
494 "mpeg2video",
495 "MPEG2 video",
496 NULL,
497 "m2v",
498 0,
499 0,
500 CODEC_ID_MPEG2VIDEO,
501 raw_write_header,
502 raw_write_packet,
503 raw_write_trailer,
504 };
505 #endif //CONFIG_ENCODERS
506
507 AVInputFormat mjpeg_iformat = {
508 "mjpeg",
509 "MJPEG video",
510 0,
511 NULL,
512 video_read_header,
513 raw_read_partial_packet,
514 raw_read_close,
515 .extensions = "mjpg,mjpeg",
516 .value = CODEC_ID_MJPEG,
517 };
518
519 #ifdef CONFIG_ENCODERS
520 AVOutputFormat mjpeg_oformat = {
521 "mjpeg",
522 "MJPEG video",
523 "video/x-mjpeg",
524 "mjpg,mjpeg",
525 0,
526 0,
527 CODEC_ID_MJPEG,
528 raw_write_header,
529 raw_write_packet,
530 raw_write_trailer,
531 };
532 #endif //CONFIG_ENCODERS
533
534 /* pcm formats */
535
536 #define PCMINPUTDEF(name, long_name, ext, codec) \
537 AVInputFormat pcm_ ## name ## _iformat = {\
538 #name,\
539 long_name,\
540 0,\
541 NULL,\
542 raw_read_header,\
543 raw_read_packet,\
544 raw_read_close,\
545 pcm_read_seek,\
546 .extensions = ext,\
547 .value = codec,\
548 };
549
550 #if !defined(CONFIG_ENCODERS) && defined(CONFIG_DECODERS)
551
552 #define PCMDEF(name, long_name, ext, codec) \
553 PCMINPUTDEF(name, long_name, ext, codec)
554
555 #else
556
557 #define PCMDEF(name, long_name, ext, codec) \
558 PCMINPUTDEF(name, long_name, ext, codec)\
559 \
560 AVOutputFormat pcm_ ## name ## _oformat = {\
561 #name,\
562 long_name,\
563 NULL,\
564 ext,\
565 0,\
566 codec,\
567 0,\
568 raw_write_header,\
569 raw_write_packet,\
570 raw_write_trailer,\
571 };
572 #endif //CONFIG_ENCODERS
573
574 #ifdef WORDS_BIGENDIAN
575 #define BE_DEF(s) s
576 #define LE_DEF(s) NULL
577 #else
578 #define BE_DEF(s) NULL
579 #define LE_DEF(s) s
580 #endif
581
582
583 PCMDEF(s16le, "pcm signed 16 bit little endian format",
584 LE_DEF("sw"), CODEC_ID_PCM_S16LE)
585
586 PCMDEF(s16be, "pcm signed 16 bit big endian format",
587 BE_DEF("sw"), CODEC_ID_PCM_S16BE)
588
589 PCMDEF(u16le, "pcm unsigned 16 bit little endian format",
590 LE_DEF("uw"), CODEC_ID_PCM_U16LE)
591
592 PCMDEF(u16be, "pcm unsigned 16 bit big endian format",
593 BE_DEF("uw"), CODEC_ID_PCM_U16BE)
594
595 PCMDEF(s8, "pcm signed 8 bit format",
596 "sb", CODEC_ID_PCM_S8)
597
598 PCMDEF(u8, "pcm unsigned 8 bit format",
599 "ub", CODEC_ID_PCM_U8)
600
601 PCMDEF(mulaw, "pcm mu law format",
602 "ul", CODEC_ID_PCM_MULAW)
603
604 PCMDEF(alaw, "pcm A law format",
605 "al", CODEC_ID_PCM_ALAW)
606
607 static int rawvideo_read_packet(AVFormatContext *s, AVPacket *pkt)
608 {
609 int packet_size, ret, width, height;
610 AVStream *st = s->streams[0];
611
612 width = st->codec->width;
613 height = st->codec->height;
614
615 packet_size = avpicture_get_size(st->codec->pix_fmt, width, height);
616 if (packet_size < 0)
617 return -1;
618
619 ret= av_get_packet(&s->pb, pkt, packet_size);
620
621 pkt->stream_index = 0;
622 if (ret != packet_size) {
623 return AVERROR_IO;
624 } else {
625 return 0;
626 }
627 }
628
629 AVInputFormat rawvideo_iformat = {
630 "rawvideo",
631 "raw video format",
632 0,
633 NULL,
634 raw_read_header,
635 rawvideo_read_packet,
636 raw_read_close,
637 .extensions = "yuv,cif,qcif",
638 .value = CODEC_ID_RAWVIDEO,
639 };
640
641 #ifdef CONFIG_ENCODERS
642 AVOutputFormat rawvideo_oformat = {
643 "rawvideo",
644 "raw video format",
645 NULL,
646 "yuv",
647 0,
648 CODEC_ID_NONE,
649 CODEC_ID_RAWVIDEO,
650 raw_write_header,
651 raw_write_packet,
652 raw_write_trailer,
653 };
654 #endif //CONFIG_ENCODERS
655
656 #ifdef CONFIG_ENCODERS
657 static int null_write_packet(struct AVFormatContext *s, AVPacket *pkt)
658 {
659 return 0;
660 }
661
662 AVOutputFormat null_oformat = {
663 "null",
664 "null video format",
665 NULL,
666 NULL,
667 0,
668 #ifdef WORDS_BIGENDIAN
669 CODEC_ID_PCM_S16BE,
670 #else
671 CODEC_ID_PCM_S16LE,
672 #endif
673 CODEC_ID_RAWVIDEO,
674 raw_write_header,
675 null_write_packet,
676 raw_write_trailer,
677 .flags = AVFMT_NOFILE | AVFMT_RAWPICTURE,
678 };
679 #endif //CONFIG_ENCODERS
680
681 #ifndef CONFIG_ENCODERS
682 #define av_register_output_format(format)
683 #endif
684 #ifndef CONFIG_DECODERS
685 #define av_register_input_format(format)
686 #endif
687
688 int raw_init(void)
689 {
690
691 av_register_input_format(&shorten_iformat);
692
693 av_register_input_format(&ac3_iformat);
694 av_register_output_format(&ac3_oformat);
695
696 av_register_input_format(&dts_iformat);
697
698 av_register_input_format(&h261_iformat);
699 av_register_output_format(&h261_oformat);
700
701 av_register_input_format(&h263_iformat);
702 av_register_output_format(&h263_oformat);
703
704 av_register_input_format(&m4v_iformat);
705 av_register_output_format(&m4v_oformat);
706
707 av_register_input_format(&h264_iformat);
708 av_register_output_format(&h264_oformat);
709
710 av_register_input_format(&mpegvideo_iformat);
711 av_register_output_format(&mpeg1video_oformat);
712
713 av_register_output_format(&mpeg2video_oformat);
714
715 av_register_input_format(&mjpeg_iformat);
716 av_register_output_format(&mjpeg_oformat);
717
718 av_register_input_format(&pcm_s16le_iformat);
719 av_register_output_format(&pcm_s16le_oformat);
720 av_register_input_format(&pcm_s16be_iformat);
721 av_register_output_format(&pcm_s16be_oformat);
722 av_register_input_format(&pcm_u16le_iformat);
723 av_register_output_format(&pcm_u16le_oformat);
724 av_register_input_format(&pcm_u16be_iformat);
725 av_register_output_format(&pcm_u16be_oformat);
726 av_register_input_format(&pcm_s8_iformat);
727 av_register_output_format(&pcm_s8_oformat);
728 av_register_input_format(&pcm_u8_iformat);
729 av_register_output_format(&pcm_u8_oformat);
730 av_register_input_format(&pcm_mulaw_iformat);
731 av_register_output_format(&pcm_mulaw_oformat);
732 av_register_input_format(&pcm_alaw_iformat);
733 av_register_output_format(&pcm_alaw_oformat);
734
735 av_register_input_format(&rawvideo_iformat);
736 av_register_output_format(&rawvideo_oformat);
737
738 av_register_output_format(&null_oformat);
739 return 0;
740 }