YUV420P to YUV422 conversion routine by (Danny Laarmans <dlaarmans at androme dot...
[libav.git] / libavformat / raw.c
CommitLineData
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1/*
2 * RAW encoder and decoder
19720f15 3 * Copyright (c) 2001 Fabrice Bellard.
de6d9b64 4 *
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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 *
19720f15 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
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
de6d9b64 14 *
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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 */
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19#include "avformat.h"
20
764ef400 21#ifdef CONFIG_ENCODERS
de6d9b64 22/* simple formats */
5c91a675 23static int raw_write_header(struct AVFormatContext *s)
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24{
25 return 0;
26}
27
e928649b 28static int raw_write_packet(struct AVFormatContext *s, AVPacket *pkt)
de6d9b64 29{
e928649b 30 put_buffer(&s->pb, pkt->data, pkt->size);
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31 put_flush_packet(&s->pb);
32 return 0;
33}
34
5c91a675 35static int raw_write_trailer(struct AVFormatContext *s)
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36{
37 return 0;
38}
764ef400 39#endif //CONFIG_ENCODERS
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40
41/* raw input */
0c1a9eda 42static int raw_read_header(AVFormatContext *s, AVFormatParameters *ap)
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43{
44 AVStream *st;
c9a65ca8 45 int id;
de6d9b64 46
c9a65ca8 47 st = av_new_stream(s, 0);
de6d9b64 48 if (!st)
c9a65ca8 49 return AVERROR_NOMEM;
de6d9b64 50 if (ap) {
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51 id = s->iformat->value;
52 if (id == CODEC_ID_RAWVIDEO) {
de6d9b64 53 st->codec.codec_type = CODEC_TYPE_VIDEO;
de6d9b64 54 } else {
c9a65ca8 55 st->codec.codec_type = CODEC_TYPE_AUDIO;
de6d9b64 56 }
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57 st->codec.codec_id = id;
58
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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;
595bf4ef 63 av_set_pts_info(st, 64, 1, st->codec.sample_rate);
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64 break;
65 case CODEC_TYPE_VIDEO:
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66 st->codec.frame_rate = ap->frame_rate;
67 st->codec.frame_rate_base = ap->frame_rate_base;
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68 st->codec.width = ap->width;
69 st->codec.height = ap->height;
63167088 70 st->codec.pix_fmt = ap->pix_fmt;
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71 break;
72 default:
27e084bd 73 return -1;
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74 }
75 } else {
27e084bd 76 return -1;
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77 }
78 return 0;
79}
80
2e93e3aa 81#define RAW_PACKET_SIZE 1024
de6d9b64 82
5c91a675 83static int raw_read_packet(AVFormatContext *s, AVPacket *pkt)
de6d9b64 84{
7866eeff 85 int ret, size;
2a6874fd 86 // AVStream *st = s->streams[0];
7866eeff 87
231dd3f3 88 size= RAW_PACKET_SIZE;
de6d9b64 89
7866eeff 90 if (av_new_packet(pkt, size) < 0)
0bd586c5 91 return AVERROR_IO;
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92
93 pkt->stream_index = 0;
7866eeff 94 ret = get_buffer(&s->pb, pkt->data, size);
2e93e3aa 95 if (ret <= 0) {
de6d9b64 96 av_free_packet(pkt);
0bd586c5 97 return AVERROR_IO;
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98 }
99 /* note: we need to modify the packet size here to handle the last
100 packet */
101 pkt->size = ret;
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102 return ret;
103}
104
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105static int raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt)
106{
107 int ret, size;
108
109 size = RAW_PACKET_SIZE;
110
111 if (av_new_packet(pkt, size) < 0)
0bd586c5 112 return AVERROR_IO;
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113
114 pkt->stream_index = 0;
115 ret = get_partial_buffer(&s->pb, pkt->data, size);
116 if (ret <= 0) {
117 av_free_packet(pkt);
0bd586c5 118 return AVERROR_IO;
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119 }
120 pkt->size = ret;
121 return ret;
122}
123
5c91a675 124static int raw_read_close(AVFormatContext *s)
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125{
126 return 0;
127}
128
4986a429 129int pcm_read_seek(AVFormatContext *s,
7b3c1382 130 int stream_index, int64_t timestamp, int flags)
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131{
132 AVStream *st;
133 int block_align, byte_rate;
134 int64_t pos;
135
136 st = s->streams[0];
137 switch(st->codec.codec_id) {
138 case CODEC_ID_PCM_S16LE:
139 case CODEC_ID_PCM_S16BE:
140 case CODEC_ID_PCM_U16LE:
141 case CODEC_ID_PCM_U16BE:
142 block_align = 2 * st->codec.channels;
143 byte_rate = block_align * st->codec.sample_rate;
144 break;
145 case CODEC_ID_PCM_S8:
146 case CODEC_ID_PCM_U8:
147 case CODEC_ID_PCM_MULAW:
148 case CODEC_ID_PCM_ALAW:
149 block_align = st->codec.channels;
150 byte_rate = block_align * st->codec.sample_rate;
151 break;
152 default:
153 block_align = st->codec.block_align;
154 byte_rate = st->codec.bit_rate / 8;
155 break;
156 }
157
158 if (block_align <= 0 || byte_rate <= 0)
159 return -1;
160
161 /* compute the position by aligning it to block_align */
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162 pos = av_rescale_rnd(timestamp * byte_rate,
163 st->time_base.num,
164 st->time_base.den * (int64_t)block_align,
165 (flags & AVSEEK_FLAG_BACKWARD) ? AV_ROUND_DOWN : AV_ROUND_UP);
166 pos *= block_align;
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167
168 /* recompute exact position */
77405fc8 169 st->cur_dts = av_rescale(pos, st->time_base.den, byte_rate * (int64_t)st->time_base.num);
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170 url_fseek(&s->pb, pos + s->data_offset, SEEK_SET);
171 return 0;
172}
173
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174/* ac3 read */
175static int ac3_read_header(AVFormatContext *s,
176 AVFormatParameters *ap)
177{
178 AVStream *st;
179
180 st = av_new_stream(s, 0);
181 if (!st)
182 return AVERROR_NOMEM;
183
184 st->codec.codec_type = CODEC_TYPE_AUDIO;
185 st->codec.codec_id = CODEC_ID_AC3;
4986a429 186 st->need_parsing = 1;
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187 /* the parameters will be extracted from the compressed bitstream */
188 return 0;
189}
190
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191/* dts read */
192static int dts_read_header(AVFormatContext *s,
193 AVFormatParameters *ap)
194{
195 AVStream *st;
196
197 st = av_new_stream(s, 0);
198 if (!st)
199 return AVERROR_NOMEM;
200
201 st->codec.codec_type = CODEC_TYPE_AUDIO;
202 st->codec.codec_id = CODEC_ID_DTS;
203 st->need_parsing = 1;
204 /* the parameters will be extracted from the compressed bitstream */
205 return 0;
206}
207
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208/* mpeg1/h263 input */
209static int video_read_header(AVFormatContext *s,
210 AVFormatParameters *ap)
211{
212 AVStream *st;
213
c9a65ca8 214 st = av_new_stream(s, 0);
de6d9b64 215 if (!st)
c9a65ca8 216 return AVERROR_NOMEM;
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217
218 st->codec.codec_type = CODEC_TYPE_VIDEO;
c9a65ca8 219 st->codec.codec_id = s->iformat->value;
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220 st->need_parsing = 1;
221
27e084bd 222 /* for mjpeg, specify frame rate */
7866eeff 223 /* for mpeg4 specify it too (most mpeg4 streams dont have the fixed_vop_rate set ...)*/
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224 if (st->codec.codec_id == CODEC_ID_MJPEG ||
225 st->codec.codec_id == CODEC_ID_MPEG4) {
226 if (ap && ap->frame_rate) {
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227 st->codec.frame_rate = ap->frame_rate;
228 st->codec.frame_rate_base = ap->frame_rate_base;
27e084bd 229 } else {
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230 st->codec.frame_rate = 25;
231 st->codec.frame_rate_base = 1;
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232 }
233 }
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234 return 0;
235}
236
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237#define SEQ_START_CODE 0x000001b3
238#define GOP_START_CODE 0x000001b8
239#define PICTURE_START_CODE 0x00000100
240
241/* XXX: improve that by looking at several start codes */
242static int mpegvideo_probe(AVProbeData *p)
243{
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244 int code;
245 const uint8_t *d;
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246
247 /* we search the first start code. If it is a sequence, gop or
248 picture start code then we decide it is an mpeg video
249 stream. We do not send highest value to give a chance to mpegts */
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250 /* NOTE: the search range was restricted to avoid too many false
251 detections */
252
253 if (p->buf_size < 6)
254 return 0;
255 d = p->buf;
256 code = (d[0] << 24) | (d[1] << 16) | (d[2] << 8) | (d[3]);
257 if ((code & 0xffffff00) == 0x100) {
258 if (code == SEQ_START_CODE ||
259 code == GOP_START_CODE ||
260 code == PICTURE_START_CODE)
261 return 50 - 1;
262 else
263 return 0;
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264 }
265 return 0;
266}
267
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268static int h263_probe(AVProbeData *p)
269{
270 int code;
271 const uint8_t *d;
272
273 if (p->buf_size < 6)
274 return 0;
275 d = p->buf;
276 code = (d[0] << 14) | (d[1] << 6) | (d[2] >> 2);
277 if (code == 0x20) {
278 return 50;
279 }
280 return 0;
281}
282
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283static int h261_probe(AVProbeData *p)
284{
285 int code;
286 const uint8_t *d;
287
288 if (p->buf_size < 6)
289 return 0;
290 d = p->buf;
291 code = (d[0] << 12) | (d[1] << 4) | (d[2] >> 4);
292 if (code == 0x10) {
293 return 50;
294 }
295 return 0;
296}
297
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298AVInputFormat ac3_iformat = {
299 "ac3",
300 "raw ac3",
301 0,
302 NULL,
cd66005d 303 ac3_read_header,
e15dec10 304 raw_read_partial_packet,
de6d9b64 305 raw_read_close,
bb76a117 306 .extensions = "ac3",
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307};
308
764ef400 309#ifdef CONFIG_ENCODERS
c9a65ca8 310AVOutputFormat ac3_oformat = {
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311 "ac3",
312 "raw ac3",
313 "audio/x-ac3",
314 "ac3",
c9a65ca8 315 0,
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316 CODEC_ID_AC3,
317 0,
318 raw_write_header,
319 raw_write_packet,
320 raw_write_trailer,
321};
764ef400 322#endif //CONFIG_ENCODERS
de6d9b64 323
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324AVInputFormat dts_iformat = {
325 "dts",
326 "raw dts",
327 0,
328 NULL,
329 dts_read_header,
330 raw_read_partial_packet,
331 raw_read_close,
332 .extensions = "dts",
333};
334
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335AVInputFormat h261_iformat = {
336 "h261",
337 "raw h261",
338 0,
339 h261_probe,
340 video_read_header,
341 raw_read_partial_packet,
342 raw_read_close,
343 .extensions = "h261",
344 .value = CODEC_ID_H261,
345};
346
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347AVInputFormat h263_iformat = {
348 "h263",
349 "raw h263",
350 0,
351 h263_probe,
352 video_read_header,
e15dec10 353 raw_read_partial_packet,
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354 raw_read_close,
355// .extensions = "h263", //FIXME remove after writing mpeg4_probe
356 .value = CODEC_ID_H263,
357};
358
764ef400 359#ifdef CONFIG_ENCODERS
c9a65ca8 360AVOutputFormat h263_oformat = {
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361 "h263",
362 "raw h263",
363 "video/x-h263",
364 "h263",
365 0,
c9a65ca8 366 0,
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367 CODEC_ID_H263,
368 raw_write_header,
369 raw_write_packet,
370 raw_write_trailer,
c9a65ca8 371};
764ef400 372#endif //CONFIG_ENCODERS
c9a65ca8 373
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374AVInputFormat m4v_iformat = {
375 "m4v",
376 "raw MPEG4 video format",
377 0,
2f0f5b20 378 NULL /*mpegvideo_probe*/,
7866eeff 379 video_read_header,
e15dec10 380 raw_read_partial_packet,
7866eeff 381 raw_read_close,
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382 .extensions = "m4v", //FIXME remove after writing mpeg4_probe
383 .value = CODEC_ID_MPEG4,
7866eeff
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384};
385
764ef400 386#ifdef CONFIG_ENCODERS
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387AVOutputFormat m4v_oformat = {
388 "m4v",
389 "raw MPEG4 video format",
390 NULL,
391 "m4v",
392 0,
393 CODEC_ID_NONE,
394 CODEC_ID_MPEG4,
395 raw_write_header,
396 raw_write_packet,
397 raw_write_trailer,
398};
764ef400 399#endif //CONFIG_ENCODERS
89b3d7c9 400
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401AVInputFormat h264_iformat = {
402 "h264",
403 "raw H264 video format",
404 0,
405 NULL /*mpegvideo_probe*/,
406 video_read_header,
e15dec10 407 raw_read_partial_packet,
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408 raw_read_close,
409 .extensions = "h26l,h264", //FIXME remove after writing mpeg4_probe
410 .value = CODEC_ID_H264,
411};
412
764ef400 413#ifdef CONFIG_ENCODERS
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414AVOutputFormat h264_oformat = {
415 "h264",
416 "raw H264 video format",
417 NULL,
418 "h264",
419 0,
420 CODEC_ID_NONE,
421 CODEC_ID_H264,
422 raw_write_header,
423 raw_write_packet,
424 raw_write_trailer,
425};
764ef400 426#endif //CONFIG_ENCODERS
0da71265 427
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428AVInputFormat mpegvideo_iformat = {
429 "mpegvideo",
430 "MPEG video",
431 0,
432 mpegvideo_probe,
de6d9b64 433 video_read_header,
e15dec10 434 raw_read_partial_packet,
de6d9b64 435 raw_read_close,
bb76a117 436 .value = CODEC_ID_MPEG1VIDEO,
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437};
438
764ef400 439#ifdef CONFIG_ENCODERS
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440AVOutputFormat mpeg1video_oformat = {
441 "mpeg1video",
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442 "MPEG video",
443 "video/x-mpeg",
444 "mpg,mpeg",
445 0,
c9a65ca8 446 0,
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447 CODEC_ID_MPEG1VIDEO,
448 raw_write_header,
449 raw_write_packet,
450 raw_write_trailer,
de6d9b64 451};
764ef400 452#endif //CONFIG_ENCODERS
de6d9b64 453
c9a65ca8 454AVInputFormat mjpeg_iformat = {
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455 "mjpeg",
456 "MJPEG video",
27e084bd 457 0,
c9a65ca8 458 NULL,
27e084bd 459 video_read_header,
e15dec10 460 raw_read_partial_packet,
27e084bd 461 raw_read_close,
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462 .extensions = "mjpg,mjpeg",
463 .value = CODEC_ID_MJPEG,
27e084bd
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464};
465
764ef400 466#ifdef CONFIG_ENCODERS
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467AVOutputFormat mjpeg_oformat = {
468 "mjpeg",
469 "MJPEG video",
470 "video/x-mjpeg",
471 "mjpg,mjpeg",
5ed8fafc 472 0,
5ed8fafc 473 0,
c9a65ca8 474 CODEC_ID_MJPEG,
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475 raw_write_header,
476 raw_write_packet,
477 raw_write_trailer,
5ed8fafc 478};
764ef400 479#endif //CONFIG_ENCODERS
5ed8fafc 480
c9a65ca8 481/* pcm formats */
764ef400 482
4986a429 483#define PCMINPUTDEF(name, long_name, ext, codec) \
764ef400
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484AVInputFormat pcm_ ## name ## _iformat = {\
485 #name,\
486 long_name,\
487 0,\
488 NULL,\
489 raw_read_header,\
490 raw_read_packet,\
491 raw_read_close,\
4986a429 492 pcm_read_seek,\
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493 .extensions = ext,\
494 .value = codec,\
495};
496
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497#if !defined(CONFIG_ENCODERS) && defined(CONFIG_DECODERS)
498
499#define PCMDEF(name, long_name, ext, codec) \
500 PCMINPUTDEF(name, long_name, ext, codec)
501
764ef400 502#else
5ed8fafc 503
c9a65ca8 504#define PCMDEF(name, long_name, ext, codec) \
4986a429 505 PCMINPUTDEF(name, long_name, ext, codec)\
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506\
507AVOutputFormat pcm_ ## name ## _oformat = {\
508 #name,\
509 long_name,\
510 NULL,\
511 ext,\
512 0,\
513 codec,\
514 0,\
515 raw_write_header,\
516 raw_write_packet,\
517 raw_write_trailer,\
5ed8fafc 518};
764ef400 519#endif //CONFIG_ENCODERS
5ed8fafc 520
5ed8fafc 521#ifdef WORDS_BIGENDIAN
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522#define BE_DEF(s) s
523#define LE_DEF(s) NULL
5ed8fafc 524#else
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525#define BE_DEF(s) NULL
526#define LE_DEF(s) s
5ed8fafc 527#endif
5ed8fafc 528
5ed8fafc 529
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530PCMDEF(s16le, "pcm signed 16 bit little endian format",
531 LE_DEF("sw"), CODEC_ID_PCM_S16LE)
5ed8fafc 532
c9a65ca8
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533PCMDEF(s16be, "pcm signed 16 bit big endian format",
534 BE_DEF("sw"), CODEC_ID_PCM_S16BE)
5ed8fafc 535
c9a65ca8
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536PCMDEF(u16le, "pcm unsigned 16 bit little endian format",
537 LE_DEF("uw"), CODEC_ID_PCM_U16LE)
5ed8fafc 538
c9a65ca8
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539PCMDEF(u16be, "pcm unsigned 16 bit big endian format",
540 BE_DEF("uw"), CODEC_ID_PCM_U16BE)
5ed8fafc 541
c9a65ca8
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542PCMDEF(s8, "pcm signed 8 bit format",
543 "sb", CODEC_ID_PCM_S8)
5ed8fafc 544
c9a65ca8
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545PCMDEF(u8, "pcm unsigned 8 bit format",
546 "ub", CODEC_ID_PCM_U8)
5ed8fafc 547
c9a65ca8
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548PCMDEF(mulaw, "pcm mu law format",
549 "ul", CODEC_ID_PCM_MULAW)
de6d9b64 550
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551PCMDEF(alaw, "pcm A law format",
552 "al", CODEC_ID_PCM_ALAW)
de6d9b64 553
5c91a675 554static int rawvideo_read_packet(AVFormatContext *s, AVPacket *pkt)
de6d9b64
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555{
556 int packet_size, ret, width, height;
557 AVStream *st = s->streams[0];
558
559 width = st->codec.width;
560 height = st->codec.height;
561
63167088
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562 packet_size = avpicture_get_size(st->codec.pix_fmt, width, height);
563 if (packet_size < 0)
71c32f19 564 return -1;
de6d9b64
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565
566 if (av_new_packet(pkt, packet_size) < 0)
0bd586c5 567 return AVERROR_IO;
de6d9b64
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568
569 pkt->stream_index = 0;
c2c2cd2d 570#if 0
de6d9b64
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571 /* bypass buffered I/O */
572 ret = url_read(url_fileno(&s->pb), pkt->data, pkt->size);
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573#else
574 ret = get_buffer(&s->pb, pkt->data, pkt->size);
575#endif
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576 if (ret != pkt->size) {
577 av_free_packet(pkt);
0bd586c5 578 return AVERROR_IO;
de6d9b64
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579 } else {
580 return 0;
581 }
582}
583
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584AVInputFormat rawvideo_iformat = {
585 "rawvideo",
586 "raw video format",
587 0,
588 NULL,
589 raw_read_header,
590 rawvideo_read_packet,
591 raw_read_close,
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592 .extensions = "yuv",
593 .value = CODEC_ID_RAWVIDEO,
c9a65ca8
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594};
595
764ef400 596#ifdef CONFIG_ENCODERS
c9a65ca8 597AVOutputFormat rawvideo_oformat = {
de6d9b64
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598 "rawvideo",
599 "raw video format",
600 NULL,
601 "yuv",
c9a65ca8 602 0,
de6d9b64
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603 CODEC_ID_NONE,
604 CODEC_ID_RAWVIDEO,
605 raw_write_header,
606 raw_write_packet,
607 raw_write_trailer,
de6d9b64 608};
764ef400 609#endif //CONFIG_ENCODERS
c9a65ca8 610
764ef400 611#ifdef CONFIG_ENCODERS
e928649b 612static int null_write_packet(struct AVFormatContext *s, AVPacket *pkt)
87bdd3e5
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613{
614 return 0;
615}
616
617AVOutputFormat null_oformat = {
618 "null",
619 "null video format",
620 NULL,
621 NULL,
622 0,
623#ifdef WORDS_BIGENDIAN
624 CODEC_ID_PCM_S16BE,
625#else
626 CODEC_ID_PCM_S16LE,
627#endif
628 CODEC_ID_RAWVIDEO,
629 raw_write_header,
630 null_write_packet,
631 raw_write_trailer,
b1d89f82 632 .flags = AVFMT_NOFILE | AVFMT_RAWPICTURE,
87bdd3e5 633};
764ef400
MM
634#endif //CONFIG_ENCODERS
635
636#ifndef CONFIG_ENCODERS
637#define av_register_output_format(format)
638#endif
639#ifndef CONFIG_DECODERS
640#define av_register_input_format(format)
641#endif
87bdd3e5 642
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643int raw_init(void)
644{
c9a65ca8
FB
645 av_register_input_format(&ac3_iformat);
646 av_register_output_format(&ac3_oformat);
647
23c99253
MN
648 av_register_input_format(&dts_iformat);
649
c6148de2
MN
650 av_register_input_format(&h261_iformat);
651
d07f9043 652 av_register_input_format(&h263_iformat);
c9a65ca8 653 av_register_output_format(&h263_oformat);
89b3d7c9 654
7866eeff 655 av_register_input_format(&m4v_iformat);
89b3d7c9 656 av_register_output_format(&m4v_oformat);
0da71265
MN
657
658 av_register_input_format(&h264_iformat);
659 av_register_output_format(&h264_oformat);
c9a65ca8
FB
660
661 av_register_input_format(&mpegvideo_iformat);
662 av_register_output_format(&mpeg1video_oformat);
663
664 av_register_input_format(&mjpeg_iformat);
665 av_register_output_format(&mjpeg_oformat);
666
667 av_register_input_format(&pcm_s16le_iformat);
668 av_register_output_format(&pcm_s16le_oformat);
669 av_register_input_format(&pcm_s16be_iformat);
670 av_register_output_format(&pcm_s16be_oformat);
671 av_register_input_format(&pcm_u16le_iformat);
672 av_register_output_format(&pcm_u16le_oformat);
673 av_register_input_format(&pcm_u16be_iformat);
674 av_register_output_format(&pcm_u16be_oformat);
675 av_register_input_format(&pcm_s8_iformat);
676 av_register_output_format(&pcm_s8_oformat);
677 av_register_input_format(&pcm_u8_iformat);
678 av_register_output_format(&pcm_u8_oformat);
679 av_register_input_format(&pcm_mulaw_iformat);
680 av_register_output_format(&pcm_mulaw_oformat);
681 av_register_input_format(&pcm_alaw_iformat);
682 av_register_output_format(&pcm_alaw_oformat);
683
684 av_register_input_format(&rawvideo_iformat);
685 av_register_output_format(&rawvideo_oformat);
87bdd3e5
FB
686
687 av_register_output_format(&null_oformat);
c9a65ca8
FB
688 return 0;
689}