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ffmpeg / libavformat / raw.c @ c49c0223

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1
/*
2
 * RAW muxer and demuxer
3
 * Copyright (c) 2001 Fabrice Bellard.
4
 * Copyright (c) 2005 Alex Beregszaszi
5
 *
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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
#endif //CONFIG_MUXERS
66

    
67
/* raw input */
68
static int raw_read_header(AVFormatContext *s, AVFormatParameters *ap)
69
{
70
    AVStream *st;
71
    int id;
72

    
73
    st = av_new_stream(s, 0);
74
    if (!st)
75
        return AVERROR(ENOMEM);
76

    
77
        id = s->iformat->value;
78
        if (id == CODEC_ID_RAWVIDEO) {
79
            st->codec->codec_type = CODEC_TYPE_VIDEO;
80
        } else {
81
            st->codec->codec_type = CODEC_TYPE_AUDIO;
82
        }
83
        st->codec->codec_id = id;
84

    
85
        switch(st->codec->codec_type) {
86
        case CODEC_TYPE_AUDIO:
87
            st->codec->sample_rate = ap->sample_rate;
88
            st->codec->channels = ap->channels;
89
            av_set_pts_info(st, 64, 1, st->codec->sample_rate);
90
            break;
91
        case CODEC_TYPE_VIDEO:
92
            av_set_pts_info(st, 64, ap->time_base.num, ap->time_base.den);
93
            st->codec->width = ap->width;
94
            st->codec->height = ap->height;
95
            st->codec->pix_fmt = ap->pix_fmt;
96
            if(st->codec->pix_fmt == PIX_FMT_NONE)
97
                st->codec->pix_fmt= PIX_FMT_YUV420P;
98
            break;
99
        default:
100
            return -1;
101
        }
102
    return 0;
103
}
104

    
105
#define RAW_PACKET_SIZE 1024
106

    
107
static int raw_read_packet(AVFormatContext *s, AVPacket *pkt)
108
{
109
    int ret, size;
110
    //    AVStream *st = s->streams[0];
111

    
112
    size= RAW_PACKET_SIZE;
113

    
114
    ret= av_get_packet(&s->pb, pkt, size);
115

    
116
    pkt->stream_index = 0;
117
    if (ret <= 0) {
118
        return AVERROR(EIO);
119
    }
120
    /* note: we need to modify the packet size here to handle the last
121
       packet */
122
    pkt->size = ret;
123
    return ret;
124
}
125

    
126
static int raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt)
127
{
128
    int ret, size;
129

    
130
    size = RAW_PACKET_SIZE;
131

    
132
    if (av_new_packet(pkt, size) < 0)
133
        return AVERROR(EIO);
134

    
135
    pkt->pos= url_ftell(&s->pb);
136
    pkt->stream_index = 0;
137
    ret = get_partial_buffer(&s->pb, pkt->data, size);
138
    if (ret <= 0) {
139
        av_free_packet(pkt);
140
        return AVERROR(EIO);
141
    }
142
    pkt->size = ret;
143
    return ret;
144
}
145

    
146
// http://www.artificis.hu/files/texts/ingenient.txt
147
static int ingenient_read_packet(AVFormatContext *s, AVPacket *pkt)
148
{
149
    int ret, size, w, h, unk1, unk2;
150

    
151
    if (get_le32(&s->pb) != MKTAG('M', 'J', 'P', 'G'))
152
        return AVERROR(EIO); // FIXME
153

    
154
    size = get_le32(&s->pb);
155

    
156
    w = get_le16(&s->pb);
157
    h = get_le16(&s->pb);
158

    
159
    url_fskip(&s->pb, 8); // zero + size (padded?)
160
    url_fskip(&s->pb, 2);
161
    unk1 = get_le16(&s->pb);
162
    unk2 = get_le16(&s->pb);
163
    url_fskip(&s->pb, 22); // ascii timestamp
164

    
165
    av_log(NULL, AV_LOG_DEBUG, "Ingenient packet: size=%d, width=%d, height=%d, unk1=%d unk2=%d\n",
166
        size, w, h, unk1, unk2);
167

    
168
    if (av_new_packet(pkt, size) < 0)
169
        return AVERROR(EIO);
170

    
171
    pkt->pos = url_ftell(&s->pb);
172
    pkt->stream_index = 0;
173
    ret = get_buffer(&s->pb, pkt->data, size);
174
    if (ret <= 0) {
175
        av_free_packet(pkt);
176
        return AVERROR(EIO);
177
    }
178
    pkt->size = ret;
179
    return ret;
180
}
181

    
182
static int raw_read_close(AVFormatContext *s)
183
{
184
    return 0;
185
}
186

    
187
int pcm_read_seek(AVFormatContext *s,
188
                  int stream_index, int64_t timestamp, int flags)
189
{
190
    AVStream *st;
191
    int block_align, byte_rate;
192
    int64_t pos;
193

    
194
    st = s->streams[0];
195

    
196
    block_align = st->codec->block_align ? st->codec->block_align :
197
        (av_get_bits_per_sample(st->codec->codec_id) * st->codec->channels) >> 3;
198
    byte_rate = st->codec->bit_rate ? st->codec->bit_rate >> 3 :
199
        block_align * st->codec->sample_rate;
200

    
201
    if (block_align <= 0 || byte_rate <= 0)
202
        return -1;
203

    
204
    /* compute the position by aligning it to block_align */
205
    pos = av_rescale_rnd(timestamp * byte_rate,
206
                         st->time_base.num,
207
                         st->time_base.den * (int64_t)block_align,
208
                         (flags & AVSEEK_FLAG_BACKWARD) ? AV_ROUND_DOWN : AV_ROUND_UP);
209
    pos *= block_align;
210

    
211
    /* recompute exact position */
212
    st->cur_dts = av_rescale(pos, st->time_base.den, byte_rate * (int64_t)st->time_base.num);
213
    url_fseek(&s->pb, pos + s->data_offset, SEEK_SET);
214
    return 0;
215
}
216

    
217
/* ac3 read */
218
static int ac3_read_header(AVFormatContext *s,
219
                           AVFormatParameters *ap)
220
{
221
    AVStream *st;
222

    
223
    st = av_new_stream(s, 0);
224
    if (!st)
225
        return AVERROR(ENOMEM);
226

    
227
    st->codec->codec_type = CODEC_TYPE_AUDIO;
228
    st->codec->codec_id = CODEC_ID_AC3;
229
    st->need_parsing = AVSTREAM_PARSE_FULL;
230
    /* the parameters will be extracted from the compressed bitstream */
231
    return 0;
232
}
233

    
234
static int shorten_read_header(AVFormatContext *s,
235
                               AVFormatParameters *ap)
236
{
237
    AVStream *st;
238

    
239
    st = av_new_stream(s, 0);
240
    if (!st)
241
        return AVERROR(ENOMEM);
242
    st->codec->codec_type = CODEC_TYPE_AUDIO;
243
    st->codec->codec_id = CODEC_ID_SHORTEN;
244
    st->need_parsing = AVSTREAM_PARSE_FULL;
245
    /* the parameters will be extracted from the compressed bitstream */
246
    return 0;
247
}
248

    
249
/* flac read */
250
static int flac_read_header(AVFormatContext *s,
251
                            AVFormatParameters *ap)
252
{
253
    AVStream *st;
254

    
255
    st = av_new_stream(s, 0);
256
    if (!st)
257
        return AVERROR(ENOMEM);
258
    st->codec->codec_type = CODEC_TYPE_AUDIO;
259
    st->codec->codec_id = CODEC_ID_FLAC;
260
    st->need_parsing = AVSTREAM_PARSE_FULL;
261
    /* the parameters will be extracted from the compressed bitstream */
262
    return 0;
263
}
264

    
265
/* dts read */
266
static int dts_read_header(AVFormatContext *s,
267
                           AVFormatParameters *ap)
268
{
269
    AVStream *st;
270

    
271
    st = av_new_stream(s, 0);
272
    if (!st)
273
        return AVERROR(ENOMEM);
274

    
275
    st->codec->codec_type = CODEC_TYPE_AUDIO;
276
    st->codec->codec_id = CODEC_ID_DTS;
277
    st->need_parsing = AVSTREAM_PARSE_FULL;
278
    /* the parameters will be extracted from the compressed bitstream */
279
    return 0;
280
}
281

    
282
/* aac read */
283
static int aac_read_header(AVFormatContext *s,
284
                           AVFormatParameters *ap)
285
{
286
    AVStream *st;
287

    
288
    st = av_new_stream(s, 0);
289
    if (!st)
290
        return AVERROR(ENOMEM);
291

    
292
    st->codec->codec_type = CODEC_TYPE_AUDIO;
293
    st->codec->codec_id = CODEC_ID_AAC;
294
    st->need_parsing = AVSTREAM_PARSE_FULL;
295
    /* the parameters will be extracted from the compressed bitstream */
296
    return 0;
297
}
298

    
299
/* mpeg1/h263 input */
300
static int video_read_header(AVFormatContext *s,
301
                             AVFormatParameters *ap)
302
{
303
    AVStream *st;
304

    
305
    st = av_new_stream(s, 0);
306
    if (!st)
307
        return AVERROR(ENOMEM);
308

    
309
    st->codec->codec_type = CODEC_TYPE_VIDEO;
310
    st->codec->codec_id = s->iformat->value;
311
    st->need_parsing = AVSTREAM_PARSE_FULL;
312

    
313
    /* for mjpeg, specify frame rate */
314
    /* for mpeg4 specify it too (most mpeg4 streams do not have the fixed_vop_rate set ...)*/
315
    if (ap->time_base.num) {
316
        av_set_pts_info(st, 64, ap->time_base.num, ap->time_base.den);
317
    } else if ( st->codec->codec_id == CODEC_ID_MJPEG ||
318
                st->codec->codec_id == CODEC_ID_MPEG4 ||
319
                st->codec->codec_id == CODEC_ID_H264) {
320
        av_set_pts_info(st, 64, 1, 25);
321
    }
322

    
323
    return 0;
324
}
325

    
326
#define SEQ_START_CODE          0x000001b3
327
#define GOP_START_CODE          0x000001b8
328
#define PICTURE_START_CODE      0x00000100
329
#define SLICE_START_CODE        0x00000101
330
#define PACK_START_CODE         0x000001ba
331
#define VIDEO_ID                0x000001e0
332
#define AUDIO_ID                0x000001c0
333

    
334
static int mpegvideo_probe(AVProbeData *p)
335
{
336
    uint32_t code= -1;
337
    int pic=0, seq=0, slice=0, pspack=0, pes=0;
338
    int i;
339

    
340
    for(i=0; i<p->buf_size; i++){
341
        code = (code<<8) + p->buf[i];
342
        if ((code & 0xffffff00) == 0x100) {
343
            switch(code){
344
            case     SEQ_START_CODE:   seq++; break;
345
            case PICTURE_START_CODE:   pic++; break;
346
            case   SLICE_START_CODE: slice++; break;
347
            case    PACK_START_CODE: pspack++; break;
348
            }
349
            if     ((code & 0x1f0) == VIDEO_ID)   pes++;
350
            else if((code & 0x1e0) == AUDIO_ID)   pes++;
351
        }
352
    }
353
    if(seq && seq*9<=pic*10 && pic*9<=slice*10 && !pspack && !pes)
354
        return AVPROBE_SCORE_MAX/2+1; // +1 for .mpg
355
    return 0;
356
}
357

    
358
#define VISUAL_OBJECT_START_CODE       0x000001b5
359
#define VOP_START_CODE                 0x000001b6
360

    
361
static int mpeg4video_probe(AVProbeData *probe_packet)
362
{
363
    uint32_t temp_buffer= -1;
364
    int VO=0, VOL=0, VOP = 0, VISO = 0, res=0;
365
    int i;
366

    
367
    for(i=0; i<probe_packet->buf_size; i++){
368
        temp_buffer = (temp_buffer<<8) + probe_packet->buf[i];
369
        if ((temp_buffer & 0xffffff00) != 0x100)
370
            continue;
371

    
372
        if (temp_buffer == VOP_START_CODE)                         VOP++;
373
        else if (temp_buffer == VISUAL_OBJECT_START_CODE)          VISO++;
374
        else if (temp_buffer < 0x120)                              VO++;
375
        else if (temp_buffer < 0x130)                              VOL++;
376
        else if (   !(0x1AF < temp_buffer && temp_buffer < 0x1B7)
377
                 && !(0x1B9 < temp_buffer && temp_buffer < 0x1C4)) res++;
378
    }
379

    
380
    if ( VOP >= VISO && VOP >= VOL && VO >= VOL && VOL > 0 && res==0)
381
        return AVPROBE_SCORE_MAX/2;
382
    return 0;
383
}
384

    
385
static int h263_probe(AVProbeData *p)
386
{
387
    int code;
388
    const uint8_t *d;
389

    
390
    d = p->buf;
391
    code = (d[0] << 14) | (d[1] << 6) | (d[2] >> 2);
392
    if (code == 0x20) {
393
        return 50;
394
    }
395
    return 0;
396
}
397

    
398
static int h261_probe(AVProbeData *p)
399
{
400
    int code;
401
    const uint8_t *d;
402

    
403
    d = p->buf;
404
    code = (d[0] << 12) | (d[1] << 4) | (d[2] >> 4);
405
    if (code == 0x10) {
406
        return 50;
407
    }
408
    return 0;
409
}
410

    
411
static int ac3_probe(AVProbeData *p)
412
{
413
    int max_frames, first_frames = 0, frames;
414
    uint8_t *buf, *buf2, *end;
415
    AC3HeaderInfo hdr;
416

    
417
    if(p->buf_size < 7)
418
        return 0;
419

    
420
    max_frames = 0;
421
    buf = p->buf;
422
    end = buf + FFMIN(5120, p->buf_size - 7);
423

    
424
    for(; buf < end; buf++) {
425
        buf2 = buf;
426

    
427
        for(frames = 0; buf2 < end; frames++) {
428
            if(ff_ac3_parse_header(buf2, &hdr) < 0)
429
                break;
430
            buf2 += hdr.frame_size;
431
        }
432
        max_frames = FFMAX(max_frames, frames);
433
        if(buf == p->buf)
434
            first_frames = frames;
435
    }
436
    if   (first_frames>=3) return AVPROBE_SCORE_MAX * 3 / 4;
437
    else if(max_frames>=2) return AVPROBE_SCORE_MAX / 2;
438
    else if(max_frames>=1) return 1;
439
    else                   return 0;
440
}
441

    
442
AVInputFormat shorten_demuxer = {
443
    "shn",
444
    "raw shorten",
445
    0,
446
    NULL,
447
    shorten_read_header,
448
    raw_read_partial_packet,
449
    raw_read_close,
450
    .flags= AVFMT_GENERIC_INDEX,
451
    .extensions = "shn",
452
};
453

    
454
AVInputFormat flac_demuxer = {
455
    "flac",
456
    "raw flac",
457
    0,
458
    NULL,
459
    flac_read_header,
460
    raw_read_partial_packet,
461
    raw_read_close,
462
    .flags= AVFMT_GENERIC_INDEX,
463
    .extensions = "flac",
464
};
465

    
466
#ifdef CONFIG_MUXERS
467
AVOutputFormat flac_muxer = {
468
    "flac",
469
    "raw flac",
470
    "audio/x-flac",
471
    "flac",
472
    0,
473
    CODEC_ID_FLAC,
474
    0,
475
    flac_write_header,
476
    raw_write_packet,
477
    .flags= AVFMT_NOTIMESTAMPS,
478
};
479
#endif //CONFIG_MUXERS
480

    
481
#ifdef CONFIG_AC3_DEMUXER
482
AVInputFormat ac3_demuxer = {
483
    "ac3",
484
    "raw ac3",
485
    0,
486
    ac3_probe,
487
    ac3_read_header,
488
    raw_read_partial_packet,
489
    raw_read_close,
490
    .flags= AVFMT_GENERIC_INDEX,
491
    .extensions = "ac3",
492
};
493
#endif
494

    
495
#ifdef CONFIG_MUXERS
496
AVOutputFormat ac3_muxer = {
497
    "ac3",
498
    "raw ac3",
499
    "audio/x-ac3",
500
    "ac3",
501
    0,
502
    CODEC_ID_AC3,
503
    0,
504
    raw_write_header,
505
    raw_write_packet,
506
    .flags= AVFMT_NOTIMESTAMPS,
507
};
508
#endif //CONFIG_MUXERS
509

    
510
AVInputFormat dts_demuxer = {
511
    "dts",
512
    "raw dts",
513
    0,
514
    NULL,
515
    dts_read_header,
516
    raw_read_partial_packet,
517
    raw_read_close,
518
    .flags= AVFMT_GENERIC_INDEX,
519
    .extensions = "dts",
520
};
521

    
522
AVInputFormat aac_demuxer = {
523
    "aac",
524
    "ADTS AAC",
525
    0,
526
    NULL,
527
    aac_read_header,
528
    raw_read_partial_packet,
529
    raw_read_close,
530
    .flags= AVFMT_GENERIC_INDEX,
531
    .extensions = "aac",
532
};
533

    
534
#ifdef CONFIG_ROQ_MUXER
535
AVOutputFormat roq_muxer =
536
{
537
    "RoQ",
538
    "Id RoQ format",
539
    NULL,
540
    "roq",
541
    0,
542
    CODEC_ID_ROQ_DPCM,
543
    CODEC_ID_ROQ,
544
    roq_write_header,
545
    raw_write_packet,
546
};
547
#endif //CONFIG_ROQ_MUXER
548

    
549
AVInputFormat h261_demuxer = {
550
    "h261",
551
    "raw h261",
552
    0,
553
    h261_probe,
554
    video_read_header,
555
    raw_read_partial_packet,
556
    raw_read_close,
557
    .flags= AVFMT_GENERIC_INDEX,
558
    .extensions = "h261",
559
    .value = CODEC_ID_H261,
560
};
561

    
562
#ifdef CONFIG_MUXERS
563
AVOutputFormat h261_muxer = {
564
    "h261",
565
    "raw h261",
566
    "video/x-h261",
567
    "h261",
568
    0,
569
    0,
570
    CODEC_ID_H261,
571
    raw_write_header,
572
    raw_write_packet,
573
    .flags= AVFMT_NOTIMESTAMPS,
574
};
575
#endif //CONFIG_MUXERS
576

    
577
AVInputFormat h263_demuxer = {
578
    "h263",
579
    "raw h263",
580
    0,
581
    h263_probe,
582
    video_read_header,
583
    raw_read_partial_packet,
584
    raw_read_close,
585
    .flags= AVFMT_GENERIC_INDEX,
586
//    .extensions = "h263", //FIXME remove after writing mpeg4_probe
587
    .value = CODEC_ID_H263,
588
};
589

    
590
#ifdef CONFIG_MUXERS
591
AVOutputFormat h263_muxer = {
592
    "h263",
593
    "raw h263",
594
    "video/x-h263",
595
    "h263",
596
    0,
597
    0,
598
    CODEC_ID_H263,
599
    raw_write_header,
600
    raw_write_packet,
601
    .flags= AVFMT_NOTIMESTAMPS,
602
};
603
#endif //CONFIG_MUXERS
604

    
605
AVInputFormat m4v_demuxer = {
606
    "m4v",
607
    "raw MPEG4 video format",
608
    0,
609
    mpeg4video_probe, /** probing for mpeg4 data */
610
    video_read_header,
611
    raw_read_partial_packet,
612
    raw_read_close,
613
    .flags= AVFMT_GENERIC_INDEX,
614
    .extensions = "m4v", //FIXME remove after writing mpeg4_probe
615
    .value = CODEC_ID_MPEG4,
616
};
617

    
618
#ifdef CONFIG_MUXERS
619
AVOutputFormat m4v_muxer = {
620
    "m4v",
621
    "raw MPEG4 video format",
622
    NULL,
623
    "m4v",
624
    0,
625
    CODEC_ID_NONE,
626
    CODEC_ID_MPEG4,
627
    raw_write_header,
628
    raw_write_packet,
629
    .flags= AVFMT_NOTIMESTAMPS,
630
};
631
#endif //CONFIG_MUXERS
632

    
633
AVInputFormat h264_demuxer = {
634
    "h264",
635
    "raw H264 video format",
636
    0,
637
    NULL /*mpegvideo_probe*/,
638
    video_read_header,
639
    raw_read_partial_packet,
640
    raw_read_close,
641
    .flags= AVFMT_GENERIC_INDEX,
642
    .extensions = "h26l,h264,264", //FIXME remove after writing mpeg4_probe
643
    .value = CODEC_ID_H264,
644
};
645

    
646
#ifdef CONFIG_MUXERS
647
AVOutputFormat h264_muxer = {
648
    "h264",
649
    "raw H264 video format",
650
    NULL,
651
    "h264",
652
    0,
653
    CODEC_ID_NONE,
654
    CODEC_ID_H264,
655
    raw_write_header,
656
    raw_write_packet,
657
    .flags= AVFMT_NOTIMESTAMPS,
658
};
659
#endif //CONFIG_MUXERS
660

    
661
AVInputFormat mpegvideo_demuxer = {
662
    "mpegvideo",
663
    "MPEG video",
664
    0,
665
    mpegvideo_probe,
666
    video_read_header,
667
    raw_read_partial_packet,
668
    raw_read_close,
669
    .flags= AVFMT_GENERIC_INDEX,
670
    .value = CODEC_ID_MPEG1VIDEO,
671
};
672

    
673
#ifdef CONFIG_MUXERS
674
AVOutputFormat mpeg1video_muxer = {
675
    "mpeg1video",
676
    "MPEG video",
677
    "video/x-mpeg",
678
    "mpg,mpeg,m1v",
679
    0,
680
    0,
681
    CODEC_ID_MPEG1VIDEO,
682
    raw_write_header,
683
    raw_write_packet,
684
    .flags= AVFMT_NOTIMESTAMPS,
685
};
686
#endif //CONFIG_MUXERS
687

    
688
#ifdef CONFIG_MUXERS
689
AVOutputFormat mpeg2video_muxer = {
690
    "mpeg2video",
691
    "MPEG2 video",
692
    NULL,
693
    "m2v",
694
    0,
695
    0,
696
    CODEC_ID_MPEG2VIDEO,
697
    raw_write_header,
698
    raw_write_packet,
699
    .flags= AVFMT_NOTIMESTAMPS,
700
};
701
#endif //CONFIG_MUXERS
702

    
703
AVInputFormat mjpeg_demuxer = {
704
    "mjpeg",
705
    "MJPEG video",
706
    0,
707
    NULL,
708
    video_read_header,
709
    raw_read_partial_packet,
710
    raw_read_close,
711
    .flags= AVFMT_GENERIC_INDEX,
712
    .extensions = "mjpg,mjpeg",
713
    .value = CODEC_ID_MJPEG,
714
};
715

    
716
AVInputFormat ingenient_demuxer = {
717
    "ingenient",
718
    "Ingenient MJPEG",
719
    0,
720
    NULL,
721
    video_read_header,
722
    ingenient_read_packet,
723
    raw_read_close,
724
    .flags= AVFMT_GENERIC_INDEX,
725
    .extensions = "cgi", // FIXME
726
    .value = CODEC_ID_MJPEG,
727
};
728

    
729
#ifdef CONFIG_MUXERS
730
AVOutputFormat mjpeg_muxer = {
731
    "mjpeg",
732
    "MJPEG video",
733
    "video/x-mjpeg",
734
    "mjpg,mjpeg",
735
    0,
736
    0,
737
    CODEC_ID_MJPEG,
738
    raw_write_header,
739
    raw_write_packet,
740
    .flags= AVFMT_NOTIMESTAMPS,
741
};
742
#endif //CONFIG_MUXERS
743

    
744
AVInputFormat vc1_demuxer = {
745
    "vc1",
746
    "raw vc1",
747
    0,
748
    NULL /* vc1_probe */,
749
    video_read_header,
750
    raw_read_partial_packet,
751
    raw_read_close,
752
    .extensions = "vc1",
753
    .value = CODEC_ID_VC1,
754
};
755

    
756
/* pcm formats */
757

    
758
#define PCMINPUTDEF(name, long_name, ext, codec) \
759
AVInputFormat pcm_ ## name ## _demuxer = {\
760
    #name,\
761
    long_name,\
762
    0,\
763
    NULL,\
764
    raw_read_header,\
765
    raw_read_packet,\
766
    raw_read_close,\
767
    pcm_read_seek,\
768
    .flags= AVFMT_GENERIC_INDEX,\
769
    .extensions = ext,\
770
    .value = codec,\
771
};
772

    
773
#define PCMOUTPUTDEF(name, long_name, ext, codec) \
774
AVOutputFormat pcm_ ## name ## _muxer = {\
775
    #name,\
776
    long_name,\
777
    NULL,\
778
    ext,\
779
    0,\
780
    codec,\
781
    0,\
782
    raw_write_header,\
783
    raw_write_packet,\
784
    .flags= AVFMT_NOTIMESTAMPS,\
785
};
786

    
787

    
788
#if !defined(CONFIG_MUXERS) && defined(CONFIG_DEMUXERS)
789
#define PCMDEF(name, long_name, ext, codec) \
790
        PCMINPUTDEF(name, long_name, ext, codec)
791
#elif defined(CONFIG_MUXERS) && !defined(CONFIG_DEMUXERS)
792
#define PCMDEF(name, long_name, ext, codec) \
793
        PCMOUTPUTDEF(name, long_name, ext, codec)
794
#elif defined(CONFIG_MUXERS) && defined(CONFIG_DEMUXERS)
795
#define PCMDEF(name, long_name, ext, codec) \
796
        PCMINPUTDEF(name, long_name, ext, codec)\
797
        PCMOUTPUTDEF(name, long_name, ext, codec)
798
#else
799
#define PCMDEF(name, long_name, ext, codec)
800
#endif
801

    
802
#ifdef WORDS_BIGENDIAN
803
#define BE_DEF(s) s
804
#define LE_DEF(s) NULL
805
#else
806
#define BE_DEF(s) NULL
807
#define LE_DEF(s) s
808
#endif
809

    
810

    
811
PCMDEF(s16le, "pcm signed 16 bit little endian format",
812
       LE_DEF("sw"), CODEC_ID_PCM_S16LE)
813

    
814
PCMDEF(s16be, "pcm signed 16 bit big endian format",
815
       BE_DEF("sw"), CODEC_ID_PCM_S16BE)
816

    
817
PCMDEF(u16le, "pcm unsigned 16 bit little endian format",
818
       LE_DEF("uw"), CODEC_ID_PCM_U16LE)
819

    
820
PCMDEF(u16be, "pcm unsigned 16 bit big endian format",
821
       BE_DEF("uw"), CODEC_ID_PCM_U16BE)
822

    
823
PCMDEF(s8, "pcm signed 8 bit format",
824
       "sb", CODEC_ID_PCM_S8)
825

    
826
PCMDEF(u8, "pcm unsigned 8 bit format",
827
       "ub", CODEC_ID_PCM_U8)
828

    
829
PCMDEF(mulaw, "pcm mu law format",
830
       "ul", CODEC_ID_PCM_MULAW)
831

    
832
PCMDEF(alaw, "pcm A law format",
833
       "al", CODEC_ID_PCM_ALAW)
834

    
835
static int rawvideo_read_packet(AVFormatContext *s, AVPacket *pkt)
836
{
837
    int packet_size, ret, width, height;
838
    AVStream *st = s->streams[0];
839

    
840
    width = st->codec->width;
841
    height = st->codec->height;
842

    
843
    packet_size = avpicture_get_size(st->codec->pix_fmt, width, height);
844
    if (packet_size < 0)
845
        return -1;
846

    
847
    ret= av_get_packet(&s->pb, pkt, packet_size);
848

    
849
    pkt->stream_index = 0;
850
    if (ret != packet_size) {
851
        return AVERROR(EIO);
852
    } else {
853
        return 0;
854
    }
855
}
856

    
857
AVInputFormat rawvideo_demuxer = {
858
    "rawvideo",
859
    "raw video format",
860
    0,
861
    NULL,
862
    raw_read_header,
863
    rawvideo_read_packet,
864
    raw_read_close,
865
    .flags= AVFMT_GENERIC_INDEX,
866
    .extensions = "yuv,cif,qcif,rgb",
867
    .value = CODEC_ID_RAWVIDEO,
868
};
869

    
870
#ifdef CONFIG_MUXERS
871
AVOutputFormat rawvideo_muxer = {
872
    "rawvideo",
873
    "raw video format",
874
    NULL,
875
    "yuv,rgb",
876
    0,
877
    CODEC_ID_NONE,
878
    CODEC_ID_RAWVIDEO,
879
    raw_write_header,
880
    raw_write_packet,
881
    .flags= AVFMT_NOTIMESTAMPS,
882
};
883
#endif //CONFIG_MUXERS
884

    
885
#ifdef CONFIG_MUXERS
886
static int null_write_packet(struct AVFormatContext *s, AVPacket *pkt)
887
{
888
    return 0;
889
}
890

    
891
AVOutputFormat null_muxer = {
892
    "null",
893
    "null video format",
894
    NULL,
895
    NULL,
896
    0,
897
#ifdef WORDS_BIGENDIAN
898
    CODEC_ID_PCM_S16BE,
899
#else
900
    CODEC_ID_PCM_S16LE,
901
#endif
902
    CODEC_ID_RAWVIDEO,
903
    raw_write_header,
904
    null_write_packet,
905
    .flags = AVFMT_NOFILE | AVFMT_RAWPICTURE | AVFMT_NOTIMESTAMPS,
906
};
907
#endif //CONFIG_MUXERS