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ffmpeg / libavformat / raw.c @ 755bfeab

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1
/*
2
 * RAW muxer and demuxer
3
 * Copyright (c) 2001 Fabrice Bellard.
4
 * Copyright (c) 2005 Alex Beregszaszi
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 *
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 * This file is part of FFmpeg.
7
 *
8
 * FFmpeg is free software; you can redistribute it and/or
9
 * modify it under the terms of the GNU Lesser General Public
10
 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
14
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#include "avformat.h"
23
#include "ac3_parser.h"
24

    
25
#ifdef CONFIG_MUXERS
26
/* simple formats */
27
static int raw_write_header(struct AVFormatContext *s)
28
{
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    return 0;
30
}
31

    
32
static int flac_write_header(struct AVFormatContext *s)
33
{
34
    static const uint8_t header[8] = {
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        0x66, 0x4C, 0x61, 0x43, 0x80, 0x00, 0x00, 0x22
36
    };
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    uint8_t *streaminfo = s->streams[0]->codec->extradata;
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    int len = s->streams[0]->codec->extradata_size;
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    if(streaminfo != NULL && len > 0) {
40
        put_buffer(&s->pb, header, 8);
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        put_buffer(&s->pb, streaminfo, len);
42
    }
43
    return 0;
44
}
45

    
46

    
47
static int roq_write_header(struct AVFormatContext *s)
48
{
49
    static const uint8_t header[] = {
50
        0x84, 0x10, 0xFF, 0xFF, 0xFF, 0xFF, 0x1E, 0x00
51
    };
52

    
53
    put_buffer(&s->pb, header, 8);
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    put_flush_packet(&s->pb);
55

    
56
    return 0;
57
}
58

    
59
static int raw_write_packet(struct AVFormatContext *s, AVPacket *pkt)
60
{
61
    put_buffer(&s->pb, pkt->data, pkt->size);
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    put_flush_packet(&s->pb);
63
    return 0;
64
}
65

    
66
static int raw_write_trailer(struct AVFormatContext *s)
67
{
68
    return 0;
69
}
70
#endif //CONFIG_MUXERS
71

    
72
/* raw input */
73
static int raw_read_header(AVFormatContext *s, AVFormatParameters *ap)
74
{
75
    AVStream *st;
76
    int id;
77

    
78
    st = av_new_stream(s, 0);
79
    if (!st)
80
        return AVERROR_NOMEM;
81

    
82
        id = s->iformat->value;
83
        if (id == CODEC_ID_RAWVIDEO) {
84
            st->codec->codec_type = CODEC_TYPE_VIDEO;
85
        } else {
86
            st->codec->codec_type = CODEC_TYPE_AUDIO;
87
        }
88
        st->codec->codec_id = id;
89

    
90
        switch(st->codec->codec_type) {
91
        case CODEC_TYPE_AUDIO:
92
            st->codec->sample_rate = ap->sample_rate;
93
            st->codec->channels = ap->channels;
94
            av_set_pts_info(st, 64, 1, st->codec->sample_rate);
95
            break;
96
        case CODEC_TYPE_VIDEO:
97
            av_set_pts_info(st, 64, ap->time_base.num, ap->time_base.den);
98
            st->codec->width = ap->width;
99
            st->codec->height = ap->height;
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            st->codec->pix_fmt = ap->pix_fmt;
101
            if(st->codec->pix_fmt == PIX_FMT_NONE)
102
                st->codec->pix_fmt= PIX_FMT_YUV420P;
103
            break;
104
        default:
105
            return -1;
106
        }
107
    return 0;
108
}
109

    
110
#define RAW_PACKET_SIZE 1024
111

    
112
static int raw_read_packet(AVFormatContext *s, AVPacket *pkt)
113
{
114
    int ret, size;
115
    //    AVStream *st = s->streams[0];
116

    
117
    size= RAW_PACKET_SIZE;
118

    
119
    ret= av_get_packet(&s->pb, pkt, size);
120

    
121
    pkt->stream_index = 0;
122
    if (ret <= 0) {
123
        return AVERROR_IO;
124
    }
125
    /* note: we need to modify the packet size here to handle the last
126
       packet */
127
    pkt->size = ret;
128
    return ret;
129
}
130

    
131
static int raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt)
132
{
133
    int ret, size;
134

    
135
    size = RAW_PACKET_SIZE;
136

    
137
    if (av_new_packet(pkt, size) < 0)
138
        return AVERROR_IO;
139

    
140
    pkt->pos= url_ftell(&s->pb);
141
    pkt->stream_index = 0;
142
    ret = get_partial_buffer(&s->pb, pkt->data, size);
143
    if (ret <= 0) {
144
        av_free_packet(pkt);
145
        return AVERROR_IO;
146
    }
147
    pkt->size = ret;
148
    return ret;
149
}
150

    
151
// http://www.artificis.hu/files/texts/ingenient.txt
152
static int ingenient_read_packet(AVFormatContext *s, AVPacket *pkt)
153
{
154
    int ret, size, w, h, unk1, unk2;
155

    
156
    if (get_le32(&s->pb) != MKTAG('M', 'J', 'P', 'G'))
157
        return AVERROR_IO; // FIXME
158

    
159
    size = get_le32(&s->pb);
160

    
161
    w = get_le16(&s->pb);
162
    h = get_le16(&s->pb);
163

    
164
    url_fskip(&s->pb, 8); // zero + size (padded?)
165
    url_fskip(&s->pb, 2);
166
    unk1 = get_le16(&s->pb);
167
    unk2 = get_le16(&s->pb);
168
    url_fskip(&s->pb, 22); // ascii timestamp
169

    
170
    av_log(NULL, AV_LOG_DEBUG, "Ingenient packet: size=%d, width=%d, height=%d, unk1=%d unk2=%d\n",
171
        size, w, h, unk1, unk2);
172

    
173
    if (av_new_packet(pkt, size) < 0)
174
        return AVERROR_IO;
175

    
176
    pkt->pos = url_ftell(&s->pb);
177
    pkt->stream_index = 0;
178
    ret = get_buffer(&s->pb, pkt->data, size);
179
    if (ret <= 0) {
180
        av_free_packet(pkt);
181
        return AVERROR_IO;
182
    }
183
    pkt->size = ret;
184
    return ret;
185
}
186

    
187
static int raw_read_close(AVFormatContext *s)
188
{
189
    return 0;
190
}
191

    
192
int pcm_read_seek(AVFormatContext *s,
193
                  int stream_index, int64_t timestamp, int flags)
194
{
195
    AVStream *st;
196
    int block_align, byte_rate;
197
    int64_t pos;
198

    
199
    st = s->streams[0];
200

    
201
    block_align = st->codec->block_align ? st->codec->block_align :
202
        (av_get_bits_per_sample(st->codec->codec_id) * st->codec->channels) >> 3;
203
    byte_rate = st->codec->bit_rate ? st->codec->bit_rate >> 3 :
204
        block_align * st->codec->sample_rate;
205

    
206
    if (block_align <= 0 || byte_rate <= 0)
207
        return -1;
208

    
209
    /* compute the position by aligning it to block_align */
210
    pos = av_rescale_rnd(timestamp * byte_rate,
211
                         st->time_base.num,
212
                         st->time_base.den * (int64_t)block_align,
213
                         (flags & AVSEEK_FLAG_BACKWARD) ? AV_ROUND_DOWN : AV_ROUND_UP);
214
    pos *= block_align;
215

    
216
    /* recompute exact position */
217
    st->cur_dts = av_rescale(pos, st->time_base.den, byte_rate * (int64_t)st->time_base.num);
218
    url_fseek(&s->pb, pos + s->data_offset, SEEK_SET);
219
    return 0;
220
}
221

    
222
/* ac3 read */
223
static int ac3_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_AUDIO;
233
    st->codec->codec_id = CODEC_ID_AC3;
234
    st->need_parsing = AVSTREAM_PARSE_FULL;
235
    /* the parameters will be extracted from the compressed bitstream */
236
    return 0;
237
}
238

    
239
static int shorten_read_header(AVFormatContext *s,
240
                               AVFormatParameters *ap)
241
{
242
    AVStream *st;
243

    
244
    st = av_new_stream(s, 0);
245
    if (!st)
246
        return AVERROR_NOMEM;
247
    st->codec->codec_type = CODEC_TYPE_AUDIO;
248
    st->codec->codec_id = CODEC_ID_SHORTEN;
249
    st->need_parsing = AVSTREAM_PARSE_FULL;
250
    /* the parameters will be extracted from the compressed bitstream */
251
    return 0;
252
}
253

    
254
/* flac read */
255
static int flac_read_header(AVFormatContext *s,
256
                            AVFormatParameters *ap)
257
{
258
    AVStream *st;
259

    
260
    st = av_new_stream(s, 0);
261
    if (!st)
262
        return AVERROR_NOMEM;
263
    st->codec->codec_type = CODEC_TYPE_AUDIO;
264
    st->codec->codec_id = CODEC_ID_FLAC;
265
    st->need_parsing = AVSTREAM_PARSE_FULL;
266
    /* the parameters will be extracted from the compressed bitstream */
267
    return 0;
268
}
269

    
270
/* dts read */
271
static int dts_read_header(AVFormatContext *s,
272
                           AVFormatParameters *ap)
273
{
274
    AVStream *st;
275

    
276
    st = av_new_stream(s, 0);
277
    if (!st)
278
        return AVERROR_NOMEM;
279

    
280
    st->codec->codec_type = CODEC_TYPE_AUDIO;
281
    st->codec->codec_id = CODEC_ID_DTS;
282
    st->need_parsing = AVSTREAM_PARSE_FULL;
283
    /* the parameters will be extracted from the compressed bitstream */
284
    return 0;
285
}
286

    
287
/* aac read */
288
static int aac_read_header(AVFormatContext *s,
289
                           AVFormatParameters *ap)
290
{
291
    AVStream *st;
292

    
293
    st = av_new_stream(s, 0);
294
    if (!st)
295
        return AVERROR_NOMEM;
296

    
297
    st->codec->codec_type = CODEC_TYPE_AUDIO;
298
    st->codec->codec_id = CODEC_ID_AAC;
299
    st->need_parsing = AVSTREAM_PARSE_FULL;
300
    /* the parameters will be extracted from the compressed bitstream */
301
    return 0;
302
}
303

    
304
/* mpeg1/h263 input */
305
static int video_read_header(AVFormatContext *s,
306
                             AVFormatParameters *ap)
307
{
308
    AVStream *st;
309

    
310
    st = av_new_stream(s, 0);
311
    if (!st)
312
        return AVERROR_NOMEM;
313

    
314
    st->codec->codec_type = CODEC_TYPE_VIDEO;
315
    st->codec->codec_id = s->iformat->value;
316
    st->need_parsing = AVSTREAM_PARSE_FULL;
317

    
318
    /* for mjpeg, specify frame rate */
319
    /* for mpeg4 specify it too (most mpeg4 streams do not have the fixed_vop_rate set ...)*/
320
    if (ap->time_base.num) {
321
        av_set_pts_info(st, 64, ap->time_base.num, ap->time_base.den);
322
    } else if ( st->codec->codec_id == CODEC_ID_MJPEG ||
323
                st->codec->codec_id == CODEC_ID_MPEG4 ||
324
                st->codec->codec_id == CODEC_ID_H264) {
325
        av_set_pts_info(st, 64, 1, 25);
326
    }
327

    
328
    return 0;
329
}
330

    
331
#define SEQ_START_CODE          0x000001b3
332
#define GOP_START_CODE          0x000001b8
333
#define PICTURE_START_CODE      0x00000100
334
#define SLICE_START_CODE        0x00000101
335
#define PACK_START_CODE         0x000001ba
336
#define VIDEO_ID                0x000001e0
337
#define AUDIO_ID                0x000001c0
338

    
339
static int mpegvideo_probe(AVProbeData *p)
340
{
341
    uint32_t code= -1;
342
    int pic=0, seq=0, slice=0, pspack=0, pes=0;
343
    int i;
344

    
345
    for(i=0; i<p->buf_size; i++){
346
        code = (code<<8) + p->buf[i];
347
        if ((code & 0xffffff00) == 0x100) {
348
            switch(code){
349
            case     SEQ_START_CODE:   seq++; break;
350
            case PICTURE_START_CODE:   pic++; break;
351
            case   SLICE_START_CODE: slice++; break;
352
            case    PACK_START_CODE: pspack++; break;
353
            }
354
            if     ((code & 0x1f0) == VIDEO_ID)   pes++;
355
            else if((code & 0x1e0) == AUDIO_ID)   pes++;
356
        }
357
    }
358
    if(seq && seq*9<=pic*10 && pic*9<=slice*10 && !pspack && !pes)
359
        return AVPROBE_SCORE_MAX/2+1; // +1 for .mpg
360
    return 0;
361
}
362

    
363
#define VISUAL_OBJECT_START_CODE       0x000001b5
364
#define VOP_START_CODE                 0x000001b6
365

    
366
static int mpeg4video_probe(AVProbeData *probe_packet)
367
{
368
    uint32_t temp_buffer= -1;
369
    int VO=0, VOL=0, VOP = 0, VISO = 0, res=0;
370
    int i;
371

    
372
    for(i=0; i<probe_packet->buf_size; i++){
373
        temp_buffer = (temp_buffer<<8) + probe_packet->buf[i];
374
        if ((temp_buffer & 0xffffff00) == 0x100) {
375
            switch(temp_buffer){
376
            case VOP_START_CODE:             VOP++; break;
377
            case VISUAL_OBJECT_START_CODE:  VISO++; break;
378
            case 0x100 ... 0x11F:             VO++; break;
379
            case 0x120 ... 0x12F:            VOL++; break;
380
            case 0x130 ... 0x1AF:
381
            case 0x1B7 ... 0x1B9:
382
            case 0x1C4 ... 0x1FF:            res++; break;
383
            }
384
        }
385
    }
386

    
387
    if ( VOP >= VISO && VOP >= VOL && VO >= VOL && VOL > 0 && res==0)
388
        return AVPROBE_SCORE_MAX/2;
389
    return 0;
390
}
391

    
392
static int h263_probe(AVProbeData *p)
393
{
394
    int code;
395
    const uint8_t *d;
396

    
397
    d = p->buf;
398
    code = (d[0] << 14) | (d[1] << 6) | (d[2] >> 2);
399
    if (code == 0x20) {
400
        return 50;
401
    }
402
    return 0;
403
}
404

    
405
static int h261_probe(AVProbeData *p)
406
{
407
    int code;
408
    const uint8_t *d;
409

    
410
    d = p->buf;
411
    code = (d[0] << 12) | (d[1] << 4) | (d[2] >> 4);
412
    if (code == 0x10) {
413
        return 50;
414
    }
415
    return 0;
416
}
417

    
418
static int ac3_probe(AVProbeData *p)
419
{
420
    int max_frames, first_frames, frames;
421
    uint8_t *buf, *buf2, *end;
422
    AC3HeaderInfo hdr;
423

    
424
    if(p->buf_size < 7)
425
        return 0;
426

    
427
    max_frames = 0;
428
    buf = p->buf;
429
    end = buf + FFMIN(4096, p->buf_size - 7);
430

    
431
    for(; buf < end; buf++) {
432
        buf2 = buf;
433

    
434
        for(frames = 0; buf2 < end; frames++) {
435
            if(ff_ac3_parse_header(buf2, &hdr) < 0)
436
                break;
437
            buf2 += hdr.frame_size;
438
        }
439
        max_frames = FFMAX(max_frames, frames);
440
        if(buf == p->buf)
441
            first_frames = frames;
442
    }
443
    if   (first_frames>=3) return AVPROBE_SCORE_MAX * 3 / 4;
444
    else if(max_frames>=3) return AVPROBE_SCORE_MAX / 2;
445
    else if(max_frames>=1) return 1;
446
    else                   return 0;
447
}
448

    
449
AVInputFormat shorten_demuxer = {
450
    "shn",
451
    "raw shorten",
452
    0,
453
    NULL,
454
    shorten_read_header,
455
    raw_read_partial_packet,
456
    raw_read_close,
457
    .flags= AVFMT_GENERIC_INDEX,
458
    .extensions = "shn",
459
};
460

    
461
AVInputFormat flac_demuxer = {
462
    "flac",
463
    "raw flac",
464
    0,
465
    NULL,
466
    flac_read_header,
467
    raw_read_partial_packet,
468
    raw_read_close,
469
    .flags= AVFMT_GENERIC_INDEX,
470
    .extensions = "flac",
471
};
472

    
473
#ifdef CONFIG_MUXERS
474
AVOutputFormat flac_muxer = {
475
    "flac",
476
    "raw flac",
477
    "audio/x-flac",
478
    "flac",
479
    0,
480
    CODEC_ID_FLAC,
481
    0,
482
    flac_write_header,
483
    raw_write_packet,
484
    raw_write_trailer,
485
    .flags= AVFMT_NOTIMESTAMPS,
486
};
487
#endif //CONFIG_MUXERS
488

    
489
#ifdef CONFIG_AC3_DEMUXER
490
AVInputFormat ac3_demuxer = {
491
    "ac3",
492
    "raw ac3",
493
    0,
494
    ac3_probe,
495
    ac3_read_header,
496
    raw_read_partial_packet,
497
    raw_read_close,
498
    .flags= AVFMT_GENERIC_INDEX,
499
    .extensions = "ac3",
500
};
501
#endif
502

    
503
#ifdef CONFIG_MUXERS
504
AVOutputFormat ac3_muxer = {
505
    "ac3",
506
    "raw ac3",
507
    "audio/x-ac3",
508
    "ac3",
509
    0,
510
    CODEC_ID_AC3,
511
    0,
512
    raw_write_header,
513
    raw_write_packet,
514
    raw_write_trailer,
515
    .flags= AVFMT_NOTIMESTAMPS,
516
};
517
#endif //CONFIG_MUXERS
518

    
519
AVInputFormat dts_demuxer = {
520
    "dts",
521
    "raw dts",
522
    0,
523
    NULL,
524
    dts_read_header,
525
    raw_read_partial_packet,
526
    raw_read_close,
527
    .flags= AVFMT_GENERIC_INDEX,
528
    .extensions = "dts",
529
};
530

    
531
AVInputFormat aac_demuxer = {
532
    "aac",
533
    "ADTS AAC",
534
    0,
535
    NULL,
536
    aac_read_header,
537
    raw_read_partial_packet,
538
    raw_read_close,
539
    .flags= AVFMT_GENERIC_INDEX,
540
    .extensions = "aac",
541
};
542

    
543
#ifdef CONFIG_ROQ_MUXER
544
AVOutputFormat roq_muxer =
545
{
546
    "RoQ",
547
    "Id RoQ format",
548
    NULL,
549
    "roq",
550
    0,
551
    CODEC_ID_ROQ_DPCM,
552
    CODEC_ID_ROQ,
553
    roq_write_header,
554
    raw_write_packet,
555
    raw_write_trailer,
556
};
557
#endif //CONFIG_ROQ_MUXER
558

    
559
AVInputFormat h261_demuxer = {
560
    "h261",
561
    "raw h261",
562
    0,
563
    h261_probe,
564
    video_read_header,
565
    raw_read_partial_packet,
566
    raw_read_close,
567
    .flags= AVFMT_GENERIC_INDEX,
568
    .extensions = "h261",
569
    .value = CODEC_ID_H261,
570
};
571

    
572
#ifdef CONFIG_MUXERS
573
AVOutputFormat h261_muxer = {
574
    "h261",
575
    "raw h261",
576
    "video/x-h261",
577
    "h261",
578
    0,
579
    0,
580
    CODEC_ID_H261,
581
    raw_write_header,
582
    raw_write_packet,
583
    raw_write_trailer,
584
    .flags= AVFMT_NOTIMESTAMPS,
585
};
586
#endif //CONFIG_MUXERS
587

    
588
AVInputFormat h263_demuxer = {
589
    "h263",
590
    "raw h263",
591
    0,
592
    h263_probe,
593
    video_read_header,
594
    raw_read_partial_packet,
595
    raw_read_close,
596
    .flags= AVFMT_GENERIC_INDEX,
597
//    .extensions = "h263", //FIXME remove after writing mpeg4_probe
598
    .value = CODEC_ID_H263,
599
};
600

    
601
#ifdef CONFIG_MUXERS
602
AVOutputFormat h263_muxer = {
603
    "h263",
604
    "raw h263",
605
    "video/x-h263",
606
    "h263",
607
    0,
608
    0,
609
    CODEC_ID_H263,
610
    raw_write_header,
611
    raw_write_packet,
612
    raw_write_trailer,
613
    .flags= AVFMT_NOTIMESTAMPS,
614
};
615
#endif //CONFIG_MUXERS
616

    
617
AVInputFormat m4v_demuxer = {
618
    "m4v",
619
    "raw MPEG4 video format",
620
    0,
621
    mpeg4video_probe, /** probing for mpeg4 data */
622
    video_read_header,
623
    raw_read_partial_packet,
624
    raw_read_close,
625
    .flags= AVFMT_GENERIC_INDEX,
626
    .extensions = "m4v", //FIXME remove after writing mpeg4_probe
627
    .value = CODEC_ID_MPEG4,
628
};
629

    
630
#ifdef CONFIG_MUXERS
631
AVOutputFormat m4v_muxer = {
632
    "m4v",
633
    "raw MPEG4 video format",
634
    NULL,
635
    "m4v",
636
    0,
637
    CODEC_ID_NONE,
638
    CODEC_ID_MPEG4,
639
    raw_write_header,
640
    raw_write_packet,
641
    raw_write_trailer,
642
    .flags= AVFMT_NOTIMESTAMPS,
643
};
644
#endif //CONFIG_MUXERS
645

    
646
AVInputFormat h264_demuxer = {
647
    "h264",
648
    "raw H264 video format",
649
    0,
650
    NULL /*mpegvideo_probe*/,
651
    video_read_header,
652
    raw_read_partial_packet,
653
    raw_read_close,
654
    .flags= AVFMT_GENERIC_INDEX,
655
    .extensions = "h26l,h264,264", //FIXME remove after writing mpeg4_probe
656
    .value = CODEC_ID_H264,
657
};
658

    
659
#ifdef CONFIG_MUXERS
660
AVOutputFormat h264_muxer = {
661
    "h264",
662
    "raw H264 video format",
663
    NULL,
664
    "h264",
665
    0,
666
    CODEC_ID_NONE,
667
    CODEC_ID_H264,
668
    raw_write_header,
669
    raw_write_packet,
670
    raw_write_trailer,
671
    .flags= AVFMT_NOTIMESTAMPS,
672
};
673
#endif //CONFIG_MUXERS
674

    
675
AVInputFormat mpegvideo_demuxer = {
676
    "mpegvideo",
677
    "MPEG video",
678
    0,
679
    mpegvideo_probe,
680
    video_read_header,
681
    raw_read_partial_packet,
682
    raw_read_close,
683
    .flags= AVFMT_GENERIC_INDEX,
684
    .value = CODEC_ID_MPEG1VIDEO,
685
};
686

    
687
#ifdef CONFIG_MUXERS
688
AVOutputFormat mpeg1video_muxer = {
689
    "mpeg1video",
690
    "MPEG video",
691
    "video/x-mpeg",
692
    "mpg,mpeg,m1v",
693
    0,
694
    0,
695
    CODEC_ID_MPEG1VIDEO,
696
    raw_write_header,
697
    raw_write_packet,
698
    raw_write_trailer,
699
    .flags= AVFMT_NOTIMESTAMPS,
700
};
701
#endif //CONFIG_MUXERS
702

    
703
#ifdef CONFIG_MUXERS
704
AVOutputFormat mpeg2video_muxer = {
705
    "mpeg2video",
706
    "MPEG2 video",
707
    NULL,
708
    "m2v",
709
    0,
710
    0,
711
    CODEC_ID_MPEG2VIDEO,
712
    raw_write_header,
713
    raw_write_packet,
714
    raw_write_trailer,
715
    .flags= AVFMT_NOTIMESTAMPS,
716
};
717
#endif //CONFIG_MUXERS
718

    
719
AVInputFormat mjpeg_demuxer = {
720
    "mjpeg",
721
    "MJPEG video",
722
    0,
723
    NULL,
724
    video_read_header,
725
    raw_read_partial_packet,
726
    raw_read_close,
727
    .flags= AVFMT_GENERIC_INDEX,
728
    .extensions = "mjpg,mjpeg",
729
    .value = CODEC_ID_MJPEG,
730
};
731

    
732
AVInputFormat ingenient_demuxer = {
733
    "ingenient",
734
    "Ingenient MJPEG",
735
    0,
736
    NULL,
737
    video_read_header,
738
    ingenient_read_packet,
739
    raw_read_close,
740
    .flags= AVFMT_GENERIC_INDEX,
741
    .extensions = "cgi", // FIXME
742
    .value = CODEC_ID_MJPEG,
743
};
744

    
745
#ifdef CONFIG_MUXERS
746
AVOutputFormat mjpeg_muxer = {
747
    "mjpeg",
748
    "MJPEG video",
749
    "video/x-mjpeg",
750
    "mjpg,mjpeg",
751
    0,
752
    0,
753
    CODEC_ID_MJPEG,
754
    raw_write_header,
755
    raw_write_packet,
756
    raw_write_trailer,
757
    .flags= AVFMT_NOTIMESTAMPS,
758
};
759
#endif //CONFIG_MUXERS
760

    
761
AVInputFormat vc1_demuxer = {
762
    "vc1",
763
    "raw vc1",
764
    0,
765
    NULL /* vc1_probe */,
766
    video_read_header,
767
    raw_read_partial_packet,
768
    raw_read_close,
769
    .extensions = "vc1",
770
    .value = CODEC_ID_VC1,
771
};
772

    
773
/* pcm formats */
774

    
775
#define PCMINPUTDEF(name, long_name, ext, codec) \
776
AVInputFormat pcm_ ## name ## _demuxer = {\
777
    #name,\
778
    long_name,\
779
    0,\
780
    NULL,\
781
    raw_read_header,\
782
    raw_read_packet,\
783
    raw_read_close,\
784
    pcm_read_seek,\
785
    .flags= AVFMT_GENERIC_INDEX,\
786
    .extensions = ext,\
787
    .value = codec,\
788
};
789

    
790
#define PCMOUTPUTDEF(name, long_name, ext, codec) \
791
AVOutputFormat pcm_ ## name ## _muxer = {\
792
    #name,\
793
    long_name,\
794
    NULL,\
795
    ext,\
796
    0,\
797
    codec,\
798
    0,\
799
    raw_write_header,\
800
    raw_write_packet,\
801
    raw_write_trailer,\
802
    .flags= AVFMT_NOTIMESTAMPS,\
803
};
804

    
805

    
806
#if !defined(CONFIG_MUXERS) && defined(CONFIG_DEMUXERS)
807
#define PCMDEF(name, long_name, ext, codec) \
808
        PCMINPUTDEF(name, long_name, ext, codec)
809
#elif defined(CONFIG_MUXERS) && !defined(CONFIG_DEMUXERS)
810
#define PCMDEF(name, long_name, ext, codec) \
811
        PCMOUTPUTDEF(name, long_name, ext, codec)
812
#elif defined(CONFIG_MUXERS) && defined(CONFIG_DEMUXERS)
813
#define PCMDEF(name, long_name, ext, codec) \
814
        PCMINPUTDEF(name, long_name, ext, codec)\
815
        PCMOUTPUTDEF(name, long_name, ext, codec)
816
#else
817
#define PCMDEF(name, long_name, ext, codec)
818
#endif
819

    
820
#ifdef WORDS_BIGENDIAN
821
#define BE_DEF(s) s
822
#define LE_DEF(s) NULL
823
#else
824
#define BE_DEF(s) NULL
825
#define LE_DEF(s) s
826
#endif
827

    
828

    
829
PCMDEF(s16le, "pcm signed 16 bit little endian format",
830
       LE_DEF("sw"), CODEC_ID_PCM_S16LE)
831

    
832
PCMDEF(s16be, "pcm signed 16 bit big endian format",
833
       BE_DEF("sw"), CODEC_ID_PCM_S16BE)
834

    
835
PCMDEF(u16le, "pcm unsigned 16 bit little endian format",
836
       LE_DEF("uw"), CODEC_ID_PCM_U16LE)
837

    
838
PCMDEF(u16be, "pcm unsigned 16 bit big endian format",
839
       BE_DEF("uw"), CODEC_ID_PCM_U16BE)
840

    
841
PCMDEF(s8, "pcm signed 8 bit format",
842
       "sb", CODEC_ID_PCM_S8)
843

    
844
PCMDEF(u8, "pcm unsigned 8 bit format",
845
       "ub", CODEC_ID_PCM_U8)
846

    
847
PCMDEF(mulaw, "pcm mu law format",
848
       "ul", CODEC_ID_PCM_MULAW)
849

    
850
PCMDEF(alaw, "pcm A law format",
851
       "al", CODEC_ID_PCM_ALAW)
852

    
853
static int rawvideo_read_packet(AVFormatContext *s, AVPacket *pkt)
854
{
855
    int packet_size, ret, width, height;
856
    AVStream *st = s->streams[0];
857

    
858
    width = st->codec->width;
859
    height = st->codec->height;
860

    
861
    packet_size = avpicture_get_size(st->codec->pix_fmt, width, height);
862
    if (packet_size < 0)
863
        return -1;
864

    
865
    ret= av_get_packet(&s->pb, pkt, packet_size);
866

    
867
    pkt->stream_index = 0;
868
    if (ret != packet_size) {
869
        return AVERROR_IO;
870
    } else {
871
        return 0;
872
    }
873
}
874

    
875
AVInputFormat rawvideo_demuxer = {
876
    "rawvideo",
877
    "raw video format",
878
    0,
879
    NULL,
880
    raw_read_header,
881
    rawvideo_read_packet,
882
    raw_read_close,
883
    .flags= AVFMT_GENERIC_INDEX,
884
    .extensions = "yuv,cif,qcif,rgb",
885
    .value = CODEC_ID_RAWVIDEO,
886
};
887

    
888
#ifdef CONFIG_MUXERS
889
AVOutputFormat rawvideo_muxer = {
890
    "rawvideo",
891
    "raw video format",
892
    NULL,
893
    "yuv,rgb",
894
    0,
895
    CODEC_ID_NONE,
896
    CODEC_ID_RAWVIDEO,
897
    raw_write_header,
898
    raw_write_packet,
899
    raw_write_trailer,
900
    .flags= AVFMT_NOTIMESTAMPS,
901
};
902
#endif //CONFIG_MUXERS
903

    
904
#ifdef CONFIG_MUXERS
905
static int null_write_packet(struct AVFormatContext *s, AVPacket *pkt)
906
{
907
    return 0;
908
}
909

    
910
AVOutputFormat null_muxer = {
911
    "null",
912
    "null video format",
913
    NULL,
914
    NULL,
915
    0,
916
#ifdef WORDS_BIGENDIAN
917
    CODEC_ID_PCM_S16BE,
918
#else
919
    CODEC_ID_PCM_S16LE,
920
#endif
921
    CODEC_ID_RAWVIDEO,
922
    raw_write_header,
923
    null_write_packet,
924
    raw_write_trailer,
925
    .flags = AVFMT_NOFILE | AVFMT_RAWPICTURE | AVFMT_NOTIMESTAMPS,
926
};
927
#endif //CONFIG_MUXERS