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ffmpeg / libavformat / raw.c @ 3abe5fbd

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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
11
 * 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"
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#include "ac3_parser.h"
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#include "raw.h"
25

    
26
#ifdef CONFIG_MUXERS
27
/* simple formats */
28
static int flac_write_header(struct AVFormatContext *s)
29
{
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    static const uint8_t header[8] = {
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        0x66, 0x4C, 0x61, 0x43, 0x80, 0x00, 0x00, 0x22
32
    };
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    uint8_t *streaminfo = s->streams[0]->codec->extradata;
34
    int len = s->streams[0]->codec->extradata_size;
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    if(streaminfo != NULL && len > 0) {
36
        put_buffer(s->pb, header, 8);
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        put_buffer(s->pb, streaminfo, len);
38
    }
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    return 0;
40
}
41

    
42

    
43
static int roq_write_header(struct AVFormatContext *s)
44
{
45
    static const uint8_t header[] = {
46
        0x84, 0x10, 0xFF, 0xFF, 0xFF, 0xFF, 0x1E, 0x00
47
    };
48

    
49
    put_buffer(s->pb, header, 8);
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    put_flush_packet(s->pb);
51

    
52
    return 0;
53
}
54

    
55
static int raw_write_packet(struct AVFormatContext *s, AVPacket *pkt)
56
{
57
    put_buffer(s->pb, pkt->data, pkt->size);
58
    put_flush_packet(s->pb);
59
    return 0;
60
}
61
#endif //CONFIG_MUXERS
62

    
63
/* raw input */
64
static int raw_read_header(AVFormatContext *s, AVFormatParameters *ap)
65
{
66
    AVStream *st;
67
    int id;
68

    
69
    st = av_new_stream(s, 0);
70
    if (!st)
71
        return AVERROR(ENOMEM);
72

    
73
        id = s->iformat->value;
74
        if (id == CODEC_ID_RAWVIDEO) {
75
            st->codec->codec_type = CODEC_TYPE_VIDEO;
76
        } else {
77
            st->codec->codec_type = CODEC_TYPE_AUDIO;
78
        }
79
        st->codec->codec_id = id;
80

    
81
        switch(st->codec->codec_type) {
82
        case CODEC_TYPE_AUDIO:
83
            st->codec->sample_rate = ap->sample_rate;
84
            st->codec->channels = ap->channels;
85
            av_set_pts_info(st, 64, 1, st->codec->sample_rate);
86
            break;
87
        case CODEC_TYPE_VIDEO:
88
            if(ap->time_base.num)
89
                av_set_pts_info(st, 64, ap->time_base.num, ap->time_base.den);
90
            else
91
                av_set_pts_info(st, 64, 1, 25);
92
            st->codec->width = ap->width;
93
            st->codec->height = ap->height;
94
            st->codec->pix_fmt = ap->pix_fmt;
95
            if(st->codec->pix_fmt == PIX_FMT_NONE)
96
                st->codec->pix_fmt= PIX_FMT_YUV420P;
97
            break;
98
        default:
99
            return -1;
100
        }
101
    return 0;
102
}
103

    
104
#define RAW_PACKET_SIZE 1024
105

    
106
static int raw_read_packet(AVFormatContext *s, AVPacket *pkt)
107
{
108
    int ret, size;
109
    //    AVStream *st = s->streams[0];
110

    
111
    size= RAW_PACKET_SIZE;
112

    
113
    ret= av_get_packet(s->pb, pkt, size);
114

    
115
    pkt->stream_index = 0;
116
    if (ret <= 0) {
117
        return AVERROR(EIO);
118
    }
119
    /* note: we need to modify the packet size here to handle the last
120
       packet */
121
    pkt->size = ret;
122
    return ret;
123
}
124

    
125
static int raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt)
126
{
127
    int ret, size;
128

    
129
    size = RAW_PACKET_SIZE;
130

    
131
    if (av_new_packet(pkt, size) < 0)
132
        return AVERROR(EIO);
133

    
134
    pkt->pos= url_ftell(s->pb);
135
    pkt->stream_index = 0;
136
    ret = get_partial_buffer(s->pb, pkt->data, size);
137
    if (ret <= 0) {
138
        av_free_packet(pkt);
139
        return AVERROR(EIO);
140
    }
141
    pkt->size = ret;
142
    return ret;
143
}
144

    
145
// http://www.artificis.hu/files/texts/ingenient.txt
146
static int ingenient_read_packet(AVFormatContext *s, AVPacket *pkt)
147
{
148
    int ret, size, w, h, unk1, unk2;
149

    
150
    if (get_le32(s->pb) != MKTAG('M', 'J', 'P', 'G'))
151
        return AVERROR(EIO); // FIXME
152

    
153
    size = get_le32(s->pb);
154

    
155
    w = get_le16(s->pb);
156
    h = get_le16(s->pb);
157

    
158
    url_fskip(s->pb, 8); // zero + size (padded?)
159
    url_fskip(s->pb, 2);
160
    unk1 = get_le16(s->pb);
161
    unk2 = get_le16(s->pb);
162
    url_fskip(s->pb, 22); // ascii timestamp
163

    
164
    av_log(NULL, AV_LOG_DEBUG, "Ingenient packet: size=%d, width=%d, height=%d, unk1=%d unk2=%d\n",
165
        size, w, h, unk1, unk2);
166

    
167
    if (av_new_packet(pkt, size) < 0)
168
        return AVERROR(EIO);
169

    
170
    pkt->pos = url_ftell(s->pb);
171
    pkt->stream_index = 0;
172
    ret = get_buffer(s->pb, pkt->data, size);
173
    if (ret <= 0) {
174
        av_free_packet(pkt);
175
        return AVERROR(EIO);
176
    }
177
    pkt->size = ret;
178
    return ret;
179
}
180

    
181
static int raw_read_close(AVFormatContext *s)
182
{
183
    return 0;
184
}
185

    
186
int pcm_read_seek(AVFormatContext *s,
187
                  int stream_index, int64_t timestamp, int flags)
188
{
189
    AVStream *st;
190
    int block_align, byte_rate;
191
    int64_t pos;
192

    
193
    st = s->streams[0];
194

    
195
    block_align = st->codec->block_align ? st->codec->block_align :
196
        (av_get_bits_per_sample(st->codec->codec_id) * st->codec->channels) >> 3;
197
    byte_rate = st->codec->bit_rate ? st->codec->bit_rate >> 3 :
198
        block_align * st->codec->sample_rate;
199

    
200
    if (block_align <= 0 || byte_rate <= 0)
201
        return -1;
202

    
203
    /* compute the position by aligning it to block_align */
204
    pos = av_rescale_rnd(timestamp * byte_rate,
205
                         st->time_base.num,
206
                         st->time_base.den * (int64_t)block_align,
207
                         (flags & AVSEEK_FLAG_BACKWARD) ? AV_ROUND_DOWN : AV_ROUND_UP);
208
    pos *= block_align;
209

    
210
    /* recompute exact position */
211
    st->cur_dts = av_rescale(pos, st->time_base.den, byte_rate * (int64_t)st->time_base.num);
212
    url_fseek(s->pb, pos + s->data_offset, SEEK_SET);
213
    return 0;
214
}
215

    
216
/* ac3 read */
217
static int ac3_read_header(AVFormatContext *s,
218
                           AVFormatParameters *ap)
219
{
220
    AVStream *st;
221

    
222
    st = av_new_stream(s, 0);
223
    if (!st)
224
        return AVERROR(ENOMEM);
225

    
226
    st->codec->codec_type = CODEC_TYPE_AUDIO;
227
    st->codec->codec_id = CODEC_ID_AC3;
228
    st->need_parsing = AVSTREAM_PARSE_FULL;
229
    /* the parameters will be extracted from the compressed bitstream */
230
    return 0;
231
}
232

    
233
static int shorten_read_header(AVFormatContext *s,
234
                               AVFormatParameters *ap)
235
{
236
    AVStream *st;
237

    
238
    st = av_new_stream(s, 0);
239
    if (!st)
240
        return AVERROR(ENOMEM);
241
    st->codec->codec_type = CODEC_TYPE_AUDIO;
242
    st->codec->codec_id = CODEC_ID_SHORTEN;
243
    st->need_parsing = AVSTREAM_PARSE_FULL;
244
    /* the parameters will be extracted from the compressed bitstream */
245
    return 0;
246
}
247

    
248
/* flac read */
249
static int flac_read_header(AVFormatContext *s,
250
                            AVFormatParameters *ap)
251
{
252
    AVStream *st;
253

    
254
    st = av_new_stream(s, 0);
255
    if (!st)
256
        return AVERROR(ENOMEM);
257
    st->codec->codec_type = CODEC_TYPE_AUDIO;
258
    st->codec->codec_id = CODEC_ID_FLAC;
259
    st->need_parsing = AVSTREAM_PARSE_FULL;
260
    /* the parameters will be extracted from the compressed bitstream */
261
    return 0;
262
}
263

    
264
/* dts read */
265
static int dts_read_header(AVFormatContext *s,
266
                           AVFormatParameters *ap)
267
{
268
    AVStream *st;
269

    
270
    st = av_new_stream(s, 0);
271
    if (!st)
272
        return AVERROR(ENOMEM);
273

    
274
    st->codec->codec_type = CODEC_TYPE_AUDIO;
275
    st->codec->codec_id = CODEC_ID_DTS;
276
    st->need_parsing = AVSTREAM_PARSE_FULL;
277
    /* the parameters will be extracted from the compressed bitstream */
278
    return 0;
279
}
280

    
281
/* aac read */
282
static int aac_read_header(AVFormatContext *s,
283
                           AVFormatParameters *ap)
284
{
285
    AVStream *st;
286

    
287
    st = av_new_stream(s, 0);
288
    if (!st)
289
        return AVERROR(ENOMEM);
290

    
291
    st->codec->codec_type = CODEC_TYPE_AUDIO;
292
    st->codec->codec_id = CODEC_ID_AAC;
293
    st->need_parsing = AVSTREAM_PARSE_FULL;
294
    /* the parameters will be extracted from the compressed bitstream */
295
    return 0;
296
}
297

    
298
/* mpeg1/h263 input */
299
static int video_read_header(AVFormatContext *s,
300
                             AVFormatParameters *ap)
301
{
302
    AVStream *st;
303

    
304
    st = av_new_stream(s, 0);
305
    if (!st)
306
        return AVERROR(ENOMEM);
307

    
308
    st->codec->codec_type = CODEC_TYPE_VIDEO;
309
    st->codec->codec_id = s->iformat->value;
310
    st->need_parsing = AVSTREAM_PARSE_FULL;
311

    
312
    /* for mjpeg, specify frame rate */
313
    /* for mpeg4 specify it too (most mpeg4 streams do not have the fixed_vop_rate set ...)*/
314
    if (ap->time_base.num) {
315
        av_set_pts_info(st, 64, ap->time_base.num, ap->time_base.den);
316
    } else if ( st->codec->codec_id == CODEC_ID_MJPEG ||
317
                st->codec->codec_id == CODEC_ID_MPEG4 ||
318
                st->codec->codec_id == CODEC_ID_H264) {
319
        av_set_pts_info(st, 64, 1, 25);
320
    }
321

    
322
    return 0;
323
}
324

    
325
#define SEQ_START_CODE          0x000001b3
326
#define GOP_START_CODE          0x000001b8
327
#define PICTURE_START_CODE      0x00000100
328
#define SLICE_START_CODE        0x00000101
329
#define PACK_START_CODE         0x000001ba
330
#define VIDEO_ID                0x000001e0
331
#define AUDIO_ID                0x000001c0
332

    
333
static int mpegvideo_probe(AVProbeData *p)
334
{
335
    uint32_t code= -1;
336
    int pic=0, seq=0, slice=0, pspack=0, pes=0;
337
    int i;
338

    
339
    for(i=0; i<p->buf_size; i++){
340
        code = (code<<8) + p->buf[i];
341
        if ((code & 0xffffff00) == 0x100) {
342
            switch(code){
343
            case     SEQ_START_CODE:   seq++; break;
344
            case PICTURE_START_CODE:   pic++; break;
345
            case   SLICE_START_CODE: slice++; break;
346
            case    PACK_START_CODE: pspack++; break;
347
            }
348
            if     ((code & 0x1f0) == VIDEO_ID)   pes++;
349
            else if((code & 0x1e0) == AUDIO_ID)   pes++;
350
        }
351
    }
352
    if(seq && seq*9<=pic*10 && pic*9<=slice*10 && !pspack && !pes)
353
        return AVPROBE_SCORE_MAX/2+1; // +1 for .mpg
354
    return 0;
355
}
356

    
357
#define VISUAL_OBJECT_START_CODE       0x000001b5
358
#define VOP_START_CODE                 0x000001b6
359

    
360
static int mpeg4video_probe(AVProbeData *probe_packet)
361
{
362
    uint32_t temp_buffer= -1;
363
    int VO=0, VOL=0, VOP = 0, VISO = 0, res=0;
364
    int i;
365

    
366
    for(i=0; i<probe_packet->buf_size; i++){
367
        temp_buffer = (temp_buffer<<8) + probe_packet->buf[i];
368
        if ((temp_buffer & 0xffffff00) != 0x100)
369
            continue;
370

    
371
        if (temp_buffer == VOP_START_CODE)                         VOP++;
372
        else if (temp_buffer == VISUAL_OBJECT_START_CODE)          VISO++;
373
        else if (temp_buffer < 0x120)                              VO++;
374
        else if (temp_buffer < 0x130)                              VOL++;
375
        else if (   !(0x1AF < temp_buffer && temp_buffer < 0x1B7)
376
                 && !(0x1B9 < temp_buffer && temp_buffer < 0x1C4)) res++;
377
    }
378

    
379
    if ( VOP >= VISO && VOP >= VOL && VO >= VOL && VOL > 0 && res==0)
380
        return AVPROBE_SCORE_MAX/2;
381
    return 0;
382
}
383

    
384
static int h263_probe(AVProbeData *p)
385
{
386
    int code;
387
    const uint8_t *d;
388

    
389
    d = p->buf;
390
    code = (d[0] << 14) | (d[1] << 6) | (d[2] >> 2);
391
    if (code == 0x20) {
392
        return 50;
393
    }
394
    return 0;
395
}
396

    
397
static int h261_probe(AVProbeData *p)
398
{
399
    int code;
400
    const uint8_t *d;
401

    
402
    d = p->buf;
403
    code = (d[0] << 12) | (d[1] << 4) | (d[2] >> 4);
404
    if (code == 0x10) {
405
        return 50;
406
    }
407
    return 0;
408
}
409

    
410
static int ac3_probe(AVProbeData *p)
411
{
412
    int max_frames, first_frames = 0, frames;
413
    uint8_t *buf, *buf2, *end;
414
    AC3HeaderInfo hdr;
415

    
416
    max_frames = 0;
417
    buf = p->buf;
418
    end = buf + p->buf_size;
419

    
420
    for(; buf < end; buf++) {
421
        buf2 = buf;
422

    
423
        for(frames = 0; buf2 < end; frames++) {
424
            if(ff_ac3_parse_header(buf2, &hdr) < 0)
425
                break;
426
            buf2 += hdr.frame_size;
427
        }
428
        max_frames = FFMAX(max_frames, frames);
429
        if(buf == p->buf)
430
            first_frames = frames;
431
    }
432
    if   (first_frames>=3) return AVPROBE_SCORE_MAX * 3 / 4;
433
    else if(max_frames>=3) return AVPROBE_SCORE_MAX / 2;
434
    else if(max_frames>=1) return 1;
435
    else                   return 0;
436
}
437

    
438
static int flac_probe(AVProbeData *p)
439
{
440
    if(memcmp(p->buf, "fLaC", 4)) return 0;
441
    else                          return AVPROBE_SCORE_MAX / 2;
442
}
443

    
444
AVInputFormat shorten_demuxer = {
445
    "shn",
446
    "raw shorten",
447
    0,
448
    NULL,
449
    shorten_read_header,
450
    raw_read_partial_packet,
451
    raw_read_close,
452
    .flags= AVFMT_GENERIC_INDEX,
453
    .extensions = "shn",
454
};
455

    
456
AVInputFormat flac_demuxer = {
457
    "flac",
458
    "raw flac",
459
    0,
460
    flac_probe,
461
    flac_read_header,
462
    raw_read_partial_packet,
463
    raw_read_close,
464
    .flags= AVFMT_GENERIC_INDEX,
465
    .extensions = "flac",
466
};
467

    
468
#ifdef CONFIG_MUXERS
469
AVOutputFormat flac_muxer = {
470
    "flac",
471
    "raw flac",
472
    "audio/x-flac",
473
    "flac",
474
    0,
475
    CODEC_ID_FLAC,
476
    0,
477
    flac_write_header,
478
    raw_write_packet,
479
    .flags= AVFMT_NOTIMESTAMPS,
480
};
481
#endif //CONFIG_MUXERS
482

    
483
#ifdef CONFIG_AC3_DEMUXER
484
AVInputFormat ac3_demuxer = {
485
    "ac3",
486
    "raw ac3",
487
    0,
488
    ac3_probe,
489
    ac3_read_header,
490
    raw_read_partial_packet,
491
    raw_read_close,
492
    .flags= AVFMT_GENERIC_INDEX,
493
    .extensions = "ac3",
494
};
495
#endif
496

    
497
#ifdef CONFIG_MUXERS
498
AVOutputFormat ac3_muxer = {
499
    "ac3",
500
    "raw ac3",
501
    "audio/x-ac3",
502
    "ac3",
503
    0,
504
    CODEC_ID_AC3,
505
    0,
506
    NULL,
507
    raw_write_packet,
508
    .flags= AVFMT_NOTIMESTAMPS,
509
};
510
#endif //CONFIG_MUXERS
511

    
512
AVInputFormat dts_demuxer = {
513
    "dts",
514
    "raw dts",
515
    0,
516
    NULL,
517
    dts_read_header,
518
    raw_read_partial_packet,
519
    raw_read_close,
520
    .flags= AVFMT_GENERIC_INDEX,
521
    .extensions = "dts",
522
};
523

    
524
AVInputFormat aac_demuxer = {
525
    "aac",
526
    "ADTS AAC",
527
    0,
528
    NULL,
529
    aac_read_header,
530
    raw_read_partial_packet,
531
    raw_read_close,
532
    .flags= AVFMT_GENERIC_INDEX,
533
    .extensions = "aac",
534
};
535

    
536
#ifdef CONFIG_ROQ_MUXER
537
AVOutputFormat roq_muxer =
538
{
539
    "RoQ",
540
    "Id RoQ format",
541
    NULL,
542
    "roq",
543
    0,
544
    CODEC_ID_ROQ_DPCM,
545
    CODEC_ID_ROQ,
546
    roq_write_header,
547
    raw_write_packet,
548
};
549
#endif //CONFIG_ROQ_MUXER
550

    
551
AVInputFormat h261_demuxer = {
552
    "h261",
553
    "raw h261",
554
    0,
555
    h261_probe,
556
    video_read_header,
557
    raw_read_partial_packet,
558
    raw_read_close,
559
    .flags= AVFMT_GENERIC_INDEX,
560
    .extensions = "h261",
561
    .value = CODEC_ID_H261,
562
};
563

    
564
#ifdef CONFIG_MUXERS
565
AVOutputFormat h261_muxer = {
566
    "h261",
567
    "raw h261",
568
    "video/x-h261",
569
    "h261",
570
    0,
571
    0,
572
    CODEC_ID_H261,
573
    NULL,
574
    raw_write_packet,
575
    .flags= AVFMT_NOTIMESTAMPS,
576
};
577
#endif //CONFIG_MUXERS
578

    
579
AVInputFormat h263_demuxer = {
580
    "h263",
581
    "raw h263",
582
    0,
583
    h263_probe,
584
    video_read_header,
585
    raw_read_partial_packet,
586
    raw_read_close,
587
    .flags= AVFMT_GENERIC_INDEX,
588
//    .extensions = "h263", //FIXME remove after writing mpeg4_probe
589
    .value = CODEC_ID_H263,
590
};
591

    
592
#ifdef CONFIG_MUXERS
593
AVOutputFormat h263_muxer = {
594
    "h263",
595
    "raw h263",
596
    "video/x-h263",
597
    "h263",
598
    0,
599
    0,
600
    CODEC_ID_H263,
601
    NULL,
602
    raw_write_packet,
603
    .flags= AVFMT_NOTIMESTAMPS,
604
};
605
#endif //CONFIG_MUXERS
606

    
607
AVInputFormat m4v_demuxer = {
608
    "m4v",
609
    "raw MPEG4 video format",
610
    0,
611
    mpeg4video_probe, /** probing for mpeg4 data */
612
    video_read_header,
613
    raw_read_partial_packet,
614
    raw_read_close,
615
    .flags= AVFMT_GENERIC_INDEX,
616
    .extensions = "m4v", //FIXME remove after writing mpeg4_probe
617
    .value = CODEC_ID_MPEG4,
618
};
619

    
620
#ifdef CONFIG_MUXERS
621
AVOutputFormat m4v_muxer = {
622
    "m4v",
623
    "raw MPEG4 video format",
624
    NULL,
625
    "m4v",
626
    0,
627
    CODEC_ID_NONE,
628
    CODEC_ID_MPEG4,
629
    NULL,
630
    raw_write_packet,
631
    .flags= AVFMT_NOTIMESTAMPS,
632
};
633
#endif //CONFIG_MUXERS
634

    
635
AVInputFormat h264_demuxer = {
636
    "h264",
637
    "raw H264 video format",
638
    0,
639
    NULL /*mpegvideo_probe*/,
640
    video_read_header,
641
    raw_read_partial_packet,
642
    raw_read_close,
643
    .flags= AVFMT_GENERIC_INDEX,
644
    .extensions = "h26l,h264,264", //FIXME remove after writing mpeg4_probe
645
    .value = CODEC_ID_H264,
646
};
647

    
648
#ifdef CONFIG_MUXERS
649
AVOutputFormat h264_muxer = {
650
    "h264",
651
    "raw H264 video format",
652
    NULL,
653
    "h264",
654
    0,
655
    CODEC_ID_NONE,
656
    CODEC_ID_H264,
657
    NULL,
658
    raw_write_packet,
659
    .flags= AVFMT_NOTIMESTAMPS,
660
};
661
#endif //CONFIG_MUXERS
662

    
663
AVInputFormat mpegvideo_demuxer = {
664
    "mpegvideo",
665
    "MPEG video",
666
    0,
667
    mpegvideo_probe,
668
    video_read_header,
669
    raw_read_partial_packet,
670
    raw_read_close,
671
    .flags= AVFMT_GENERIC_INDEX,
672
    .value = CODEC_ID_MPEG1VIDEO,
673
};
674

    
675
#ifdef CONFIG_MUXERS
676
AVOutputFormat mpeg1video_muxer = {
677
    "mpeg1video",
678
    "MPEG video",
679
    "video/x-mpeg",
680
    "mpg,mpeg,m1v",
681
    0,
682
    0,
683
    CODEC_ID_MPEG1VIDEO,
684
    NULL,
685
    raw_write_packet,
686
    .flags= AVFMT_NOTIMESTAMPS,
687
};
688
#endif //CONFIG_MUXERS
689

    
690
#ifdef CONFIG_MUXERS
691
AVOutputFormat mpeg2video_muxer = {
692
    "mpeg2video",
693
    "MPEG2 video",
694
    NULL,
695
    "m2v",
696
    0,
697
    0,
698
    CODEC_ID_MPEG2VIDEO,
699
    NULL,
700
    raw_write_packet,
701
    .flags= AVFMT_NOTIMESTAMPS,
702
};
703
#endif //CONFIG_MUXERS
704

    
705
AVInputFormat mjpeg_demuxer = {
706
    "mjpeg",
707
    "MJPEG video",
708
    0,
709
    NULL,
710
    video_read_header,
711
    raw_read_partial_packet,
712
    raw_read_close,
713
    .flags= AVFMT_GENERIC_INDEX,
714
    .extensions = "mjpg,mjpeg",
715
    .value = CODEC_ID_MJPEG,
716
};
717

    
718
AVInputFormat ingenient_demuxer = {
719
    "ingenient",
720
    "Ingenient MJPEG",
721
    0,
722
    NULL,
723
    video_read_header,
724
    ingenient_read_packet,
725
    raw_read_close,
726
    .flags= AVFMT_GENERIC_INDEX,
727
    .extensions = "cgi", // FIXME
728
    .value = CODEC_ID_MJPEG,
729
};
730

    
731
#ifdef CONFIG_MUXERS
732
AVOutputFormat mjpeg_muxer = {
733
    "mjpeg",
734
    "MJPEG video",
735
    "video/x-mjpeg",
736
    "mjpg,mjpeg",
737
    0,
738
    0,
739
    CODEC_ID_MJPEG,
740
    NULL,
741
    raw_write_packet,
742
    .flags= AVFMT_NOTIMESTAMPS,
743
};
744
#endif //CONFIG_MUXERS
745

    
746
AVInputFormat vc1_demuxer = {
747
    "vc1",
748
    "raw vc1",
749
    0,
750
    NULL /* vc1_probe */,
751
    video_read_header,
752
    raw_read_partial_packet,
753
    raw_read_close,
754
    .extensions = "vc1",
755
    .value = CODEC_ID_VC1,
756
};
757

    
758
/* pcm formats */
759

    
760
#define PCMINPUTDEF(name, long_name, ext, codec) \
761
AVInputFormat pcm_ ## name ## _demuxer = {\
762
    #name,\
763
    long_name,\
764
    0,\
765
    NULL,\
766
    raw_read_header,\
767
    raw_read_packet,\
768
    raw_read_close,\
769
    pcm_read_seek,\
770
    .flags= AVFMT_GENERIC_INDEX,\
771
    .extensions = ext,\
772
    .value = codec,\
773
};
774

    
775
#define PCMOUTPUTDEF(name, long_name, ext, codec) \
776
AVOutputFormat pcm_ ## name ## _muxer = {\
777
    #name,\
778
    long_name,\
779
    NULL,\
780
    ext,\
781
    0,\
782
    codec,\
783
    0,\
784
    NULL,\
785
    raw_write_packet,\
786
    .flags= AVFMT_NOTIMESTAMPS,\
787
};
788

    
789

    
790
#if !defined(CONFIG_MUXERS) && defined(CONFIG_DEMUXERS)
791
#define PCMDEF(name, long_name, ext, codec) \
792
        PCMINPUTDEF(name, long_name, ext, codec)
793
#elif defined(CONFIG_MUXERS) && !defined(CONFIG_DEMUXERS)
794
#define PCMDEF(name, long_name, ext, codec) \
795
        PCMOUTPUTDEF(name, long_name, ext, codec)
796
#elif defined(CONFIG_MUXERS) && defined(CONFIG_DEMUXERS)
797
#define PCMDEF(name, long_name, ext, codec) \
798
        PCMINPUTDEF(name, long_name, ext, codec)\
799
        PCMOUTPUTDEF(name, long_name, ext, codec)
800
#else
801
#define PCMDEF(name, long_name, ext, codec)
802
#endif
803

    
804
#ifdef WORDS_BIGENDIAN
805
#define BE_DEF(s) s
806
#define LE_DEF(s) NULL
807
#else
808
#define BE_DEF(s) NULL
809
#define LE_DEF(s) s
810
#endif
811

    
812

    
813
PCMDEF(s16le, "pcm signed 16 bit little endian format",
814
       LE_DEF("sw"), CODEC_ID_PCM_S16LE)
815

    
816
PCMDEF(s16be, "pcm signed 16 bit big endian format",
817
       BE_DEF("sw"), CODEC_ID_PCM_S16BE)
818

    
819
PCMDEF(u16le, "pcm unsigned 16 bit little endian format",
820
       LE_DEF("uw"), CODEC_ID_PCM_U16LE)
821

    
822
PCMDEF(u16be, "pcm unsigned 16 bit big endian format",
823
       BE_DEF("uw"), CODEC_ID_PCM_U16BE)
824

    
825
PCMDEF(s8, "pcm signed 8 bit format",
826
       "sb", CODEC_ID_PCM_S8)
827

    
828
PCMDEF(u8, "pcm unsigned 8 bit format",
829
       "ub", CODEC_ID_PCM_U8)
830

    
831
PCMDEF(mulaw, "pcm mu law format",
832
       "ul", CODEC_ID_PCM_MULAW)
833

    
834
PCMDEF(alaw, "pcm A law format",
835
       "al", CODEC_ID_PCM_ALAW)
836

    
837
static int rawvideo_read_packet(AVFormatContext *s, AVPacket *pkt)
838
{
839
    int packet_size, ret, width, height;
840
    AVStream *st = s->streams[0];
841

    
842
    width = st->codec->width;
843
    height = st->codec->height;
844

    
845
    packet_size = avpicture_get_size(st->codec->pix_fmt, width, height);
846
    if (packet_size < 0)
847
        return -1;
848

    
849
    ret= av_get_packet(s->pb, pkt, packet_size);
850

    
851
    pkt->stream_index = 0;
852
    if (ret != packet_size) {
853
        return AVERROR(EIO);
854
    } else {
855
        return 0;
856
    }
857
}
858

    
859
AVInputFormat rawvideo_demuxer = {
860
    "rawvideo",
861
    "raw video format",
862
    0,
863
    NULL,
864
    raw_read_header,
865
    rawvideo_read_packet,
866
    raw_read_close,
867
    .flags= AVFMT_GENERIC_INDEX,
868
    .extensions = "yuv,cif,qcif,rgb",
869
    .value = CODEC_ID_RAWVIDEO,
870
};
871

    
872
#ifdef CONFIG_MUXERS
873
AVOutputFormat rawvideo_muxer = {
874
    "rawvideo",
875
    "raw video format",
876
    NULL,
877
    "yuv,rgb",
878
    0,
879
    CODEC_ID_NONE,
880
    CODEC_ID_RAWVIDEO,
881
    NULL,
882
    raw_write_packet,
883
    .flags= AVFMT_NOTIMESTAMPS,
884
};
885
#endif //CONFIG_MUXERS
886

    
887
#ifdef CONFIG_MUXERS
888
static int null_write_packet(struct AVFormatContext *s, AVPacket *pkt)
889
{
890
    return 0;
891
}
892

    
893
AVOutputFormat null_muxer = {
894
    "null",
895
    "null video format",
896
    NULL,
897
    NULL,
898
    0,
899
#ifdef WORDS_BIGENDIAN
900
    CODEC_ID_PCM_S16BE,
901
#else
902
    CODEC_ID_PCM_S16LE,
903
#endif
904
    CODEC_ID_RAWVIDEO,
905
    NULL,
906
    null_write_packet,
907
    .flags = AVFMT_NOFILE | AVFMT_RAWPICTURE | AVFMT_NOTIMESTAMPS,
908
};
909
#endif //CONFIG_MUXERS