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ffmpeg / libavformat / raw.c @ 1afdcdf1

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1
/*
2
 * RAW muxer and demuxer
3
 * Copyright (c) 2001 Fabrice Bellard.
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 * Copyright (c) 2005 Alex Beregszaszi
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 *
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 * This file is part of FFmpeg.
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 *
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 * 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,
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 * 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

    
24
#ifdef CONFIG_MUXERS
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/* simple formats */
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static int raw_write_header(struct AVFormatContext *s)
27
{
28
    return 0;
29
}
30

    
31
static int flac_write_header(struct AVFormatContext *s)
32
{
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    static const uint8_t header[8] = {
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        0x66, 0x4C, 0x61, 0x43, 0x80, 0x00, 0x00, 0x22
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    };
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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) {
39
        put_buffer(&s->pb, header, 8);
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        put_buffer(&s->pb, streaminfo, len);
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    }
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    return 0;
43
}
44

    
45
static int raw_write_packet(struct AVFormatContext *s, AVPacket *pkt)
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{
47
    put_buffer(&s->pb, pkt->data, pkt->size);
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    put_flush_packet(&s->pb);
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    return 0;
50
}
51

    
52
static int raw_write_trailer(struct AVFormatContext *s)
53
{
54
    return 0;
55
}
56
#endif //CONFIG_MUXERS
57

    
58
/* raw input */
59
static int raw_read_header(AVFormatContext *s, AVFormatParameters *ap)
60
{
61
    AVStream *st;
62
    int id;
63

    
64
    st = av_new_stream(s, 0);
65
    if (!st)
66
        return AVERROR_NOMEM;
67

    
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        id = s->iformat->value;
69
        if (id == CODEC_ID_RAWVIDEO) {
70
            st->codec->codec_type = CODEC_TYPE_VIDEO;
71
        } else {
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            st->codec->codec_type = CODEC_TYPE_AUDIO;
73
        }
74
        st->codec->codec_id = id;
75

    
76
        switch(st->codec->codec_type) {
77
        case CODEC_TYPE_AUDIO:
78
            st->codec->sample_rate = ap->sample_rate;
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            st->codec->channels = ap->channels;
80
            av_set_pts_info(st, 64, 1, st->codec->sample_rate);
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            break;
82
        case CODEC_TYPE_VIDEO:
83
            av_set_pts_info(st, 64, ap->time_base.num, ap->time_base.den);
84
            st->codec->width = ap->width;
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            st->codec->height = ap->height;
86
            st->codec->pix_fmt = ap->pix_fmt;
87
            if(st->codec->pix_fmt == PIX_FMT_NONE)
88
                st->codec->pix_fmt= PIX_FMT_YUV420P;
89
            break;
90
        default:
91
            return -1;
92
        }
93
    return 0;
94
}
95

    
96
#define RAW_PACKET_SIZE 1024
97

    
98
static int raw_read_packet(AVFormatContext *s, AVPacket *pkt)
99
{
100
    int ret, size;
101
    //    AVStream *st = s->streams[0];
102

    
103
    size= RAW_PACKET_SIZE;
104

    
105
    ret= av_get_packet(&s->pb, pkt, size);
106

    
107
    pkt->stream_index = 0;
108
    if (ret <= 0) {
109
        return AVERROR_IO;
110
    }
111
    /* note: we need to modify the packet size here to handle the last
112
       packet */
113
    pkt->size = ret;
114
    return ret;
115
}
116

    
117
static int raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt)
118
{
119
    int ret, size;
120

    
121
    size = RAW_PACKET_SIZE;
122

    
123
    if (av_new_packet(pkt, size) < 0)
124
        return AVERROR_IO;
125

    
126
    pkt->pos= url_ftell(&s->pb);
127
    pkt->stream_index = 0;
128
    ret = get_partial_buffer(&s->pb, pkt->data, size);
129
    if (ret <= 0) {
130
        av_free_packet(pkt);
131
        return AVERROR_IO;
132
    }
133
    pkt->size = ret;
134
    return ret;
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}
136

    
137
// http://www.artificis.hu/files/texts/ingenient.txt
138
static int ingenient_read_packet(AVFormatContext *s, AVPacket *pkt)
139
{
140
    int ret, size, w, h, unk1, unk2;
141

    
142
    if (get_le32(&s->pb) != MKTAG('M', 'J', 'P', 'G'))
143
        return AVERROR_IO; // FIXME
144

    
145
    size = get_le32(&s->pb);
146

    
147
    w = get_le16(&s->pb);
148
    h = get_le16(&s->pb);
149

    
150
    url_fskip(&s->pb, 8); // zero + size (padded?)
151
    url_fskip(&s->pb, 2);
152
    unk1 = get_le16(&s->pb);
153
    unk2 = get_le16(&s->pb);
154
    url_fskip(&s->pb, 22); // ascii timestamp
155

    
156
    av_log(NULL, AV_LOG_DEBUG, "Ingenient packet: size=%d, width=%d, height=%d, unk1=%d unk2=%d\n",
157
        size, w, h, unk1, unk2);
158

    
159
    if (av_new_packet(pkt, size) < 0)
160
        return AVERROR_IO;
161

    
162
    pkt->pos = url_ftell(&s->pb);
163
    pkt->stream_index = 0;
164
    ret = get_buffer(&s->pb, pkt->data, size);
165
    if (ret <= 0) {
166
        av_free_packet(pkt);
167
        return AVERROR_IO;
168
    }
169
    pkt->size = ret;
170
    return ret;
171
}
172

    
173
static int raw_read_close(AVFormatContext *s)
174
{
175
    return 0;
176
}
177

    
178
int pcm_read_seek(AVFormatContext *s,
179
                  int stream_index, int64_t timestamp, int flags)
180
{
181
    AVStream *st;
182
    int block_align, byte_rate;
183
    int64_t pos;
184

    
185
    st = s->streams[0];
186

    
187
    block_align = st->codec->block_align ? st->codec->block_align :
188
        (av_get_bits_per_sample(st->codec->codec_id) * st->codec->channels) >> 3;
189
    byte_rate = st->codec->bit_rate ? st->codec->bit_rate >> 3 :
190
        block_align * st->codec->sample_rate;
191

    
192
    if (block_align <= 0 || byte_rate <= 0)
193
        return -1;
194

    
195
    /* compute the position by aligning it to block_align */
196
    pos = av_rescale_rnd(timestamp * byte_rate,
197
                         st->time_base.num,
198
                         st->time_base.den * (int64_t)block_align,
199
                         (flags & AVSEEK_FLAG_BACKWARD) ? AV_ROUND_DOWN : AV_ROUND_UP);
200
    pos *= block_align;
201

    
202
    /* recompute exact position */
203
    st->cur_dts = av_rescale(pos, st->time_base.den, byte_rate * (int64_t)st->time_base.num);
204
    url_fseek(&s->pb, pos + s->data_offset, SEEK_SET);
205
    return 0;
206
}
207

    
208
/* ac3 read */
209
static int ac3_read_header(AVFormatContext *s,
210
                           AVFormatParameters *ap)
211
{
212
    AVStream *st;
213

    
214
    st = av_new_stream(s, 0);
215
    if (!st)
216
        return AVERROR_NOMEM;
217

    
218
    st->codec->codec_type = CODEC_TYPE_AUDIO;
219
    st->codec->codec_id = CODEC_ID_AC3;
220
    st->need_parsing = 1;
221
    /* the parameters will be extracted from the compressed bitstream */
222
    return 0;
223
}
224

    
225
static int shorten_read_header(AVFormatContext *s,
226
                               AVFormatParameters *ap)
227
{
228
    AVStream *st;
229

    
230
    st = av_new_stream(s, 0);
231
    if (!st)
232
        return AVERROR_NOMEM;
233
    st->codec->codec_type = CODEC_TYPE_AUDIO;
234
    st->codec->codec_id = CODEC_ID_SHORTEN;
235
    st->need_parsing = 1;
236
    /* the parameters will be extracted from the compressed bitstream */
237
    return 0;
238
}
239

    
240
/* flac read */
241
static int flac_read_header(AVFormatContext *s,
242
                            AVFormatParameters *ap)
243
{
244
    AVStream *st;
245

    
246
    st = av_new_stream(s, 0);
247
    if (!st)
248
        return AVERROR_NOMEM;
249
    st->codec->codec_type = CODEC_TYPE_AUDIO;
250
    st->codec->codec_id = CODEC_ID_FLAC;
251
    st->need_parsing = 1;
252
    /* the parameters will be extracted from the compressed bitstream */
253
    return 0;
254
}
255

    
256
/* dts read */
257
static int dts_read_header(AVFormatContext *s,
258
                           AVFormatParameters *ap)
259
{
260
    AVStream *st;
261

    
262
    st = av_new_stream(s, 0);
263
    if (!st)
264
        return AVERROR_NOMEM;
265

    
266
    st->codec->codec_type = CODEC_TYPE_AUDIO;
267
    st->codec->codec_id = CODEC_ID_DTS;
268
    st->need_parsing = 1;
269
    /* the parameters will be extracted from the compressed bitstream */
270
    return 0;
271
}
272

    
273
/* aac read */
274
static int aac_read_header(AVFormatContext *s,
275
                           AVFormatParameters *ap)
276
{
277
    AVStream *st;
278

    
279
    st = av_new_stream(s, 0);
280
    if (!st)
281
        return AVERROR_NOMEM;
282

    
283
    st->codec->codec_type = CODEC_TYPE_AUDIO;
284
    st->codec->codec_id = CODEC_ID_AAC;
285
    st->need_parsing = 1;
286
    /* the parameters will be extracted from the compressed bitstream */
287
    return 0;
288
}
289

    
290
/* mpeg1/h263 input */
291
static int video_read_header(AVFormatContext *s,
292
                             AVFormatParameters *ap)
293
{
294
    AVStream *st;
295

    
296
    st = av_new_stream(s, 0);
297
    if (!st)
298
        return AVERROR_NOMEM;
299

    
300
    st->codec->codec_type = CODEC_TYPE_VIDEO;
301
    st->codec->codec_id = s->iformat->value;
302
    st->need_parsing = 1;
303

    
304
    /* for mjpeg, specify frame rate */
305
    /* for mpeg4 specify it too (most mpeg4 streams dont have the fixed_vop_rate set ...)*/
306
    if (ap->time_base.num) {
307
        av_set_pts_info(st, 64, ap->time_base.num, ap->time_base.den);
308
    } else if ( st->codec->codec_id == CODEC_ID_MJPEG ||
309
                st->codec->codec_id == CODEC_ID_MPEG4 ||
310
                st->codec->codec_id == CODEC_ID_H264) {
311
        av_set_pts_info(st, 64, 1, 25);
312
    }
313

    
314
    return 0;
315
}
316

    
317
#define SEQ_START_CODE          0x000001b3
318
#define GOP_START_CODE          0x000001b8
319
#define PICTURE_START_CODE      0x00000100
320
#define SLICE_START_CODE        0x00000101
321
#define PACK_START_CODE         0x000001ba
322
#define VIDEO_ID                0x000001e0
323
#define AUDIO_ID                0x000001c0
324

    
325
static int mpegvideo_probe(AVProbeData *p)
326
{
327
    uint32_t code= -1;
328
    int pic=0, seq=0, slice=0, pspack=0, pes=0;
329
    int i;
330

    
331
    for(i=0; i<p->buf_size; i++){
332
        code = (code<<8) + p->buf[i];
333
        if ((code & 0xffffff00) == 0x100) {
334
            switch(code){
335
            case     SEQ_START_CODE:   seq++; break;
336
            case PICTURE_START_CODE:   pic++; break;
337
            case   SLICE_START_CODE: slice++; break;
338
            case    PACK_START_CODE: pspack++; break;
339
            case           VIDEO_ID:
340
            case           AUDIO_ID:   pes++; break;
341
            }
342
        }
343
    }
344
    if(seq && seq*9<=pic*10 && pic*9<=slice*10 && !pspack && !pes)
345
        return AVPROBE_SCORE_MAX/2+1; // +1 for .mpg
346
    return 0;
347
}
348

    
349
#define VIDEO_OBJECT_START_CODE        0x00000100
350
#define VIDEO_OBJECT_LAYER_START_CODE  0x00000120
351
#define VISUAL_OBJECT_START_CODE       0x000001b5
352
#define VOP_START_CODE                 0x000001b6
353

    
354
static int mpeg4video_probe(AVProbeData *probe_packet)
355
{
356
    uint32_t temp_buffer= -1;
357
    int VO=0, VOL=0, VOP = 0, VISO = 0;
358
    int i;
359

    
360
    for(i=0; i<probe_packet->buf_size; i++){
361
        temp_buffer = (temp_buffer<<8) + probe_packet->buf[i];
362
        if ((temp_buffer & 0xffffff00) == 0x100) {
363
            switch(temp_buffer){
364
            case VOP_START_CODE:             VOP++; break;
365
            case VISUAL_OBJECT_START_CODE:  VISO++; break;
366
            }
367
            switch(temp_buffer & 0xfffffff0){
368
            case VIDEO_OBJECT_START_CODE:            VO++; break;
369
            case VIDEO_OBJECT_LAYER_START_CODE:     VOL++; break;
370
            }
371
        }
372
    }
373

    
374
    if ( VOP >= VISO && VOP >= VOL && VO >= VOL && VOL > 0)
375
        return AVPROBE_SCORE_MAX/2;
376
    return 0;
377
}
378

    
379
static int h263_probe(AVProbeData *p)
380
{
381
    int code;
382
    const uint8_t *d;
383

    
384
    if (p->buf_size < 6)
385
        return 0;
386
    d = p->buf;
387
    code = (d[0] << 14) | (d[1] << 6) | (d[2] >> 2);
388
    if (code == 0x20) {
389
        return 50;
390
    }
391
    return 0;
392
}
393

    
394
static int h261_probe(AVProbeData *p)
395
{
396
    int code;
397
    const uint8_t *d;
398

    
399
    if (p->buf_size < 6)
400
        return 0;
401
    d = p->buf;
402
    code = (d[0] << 12) | (d[1] << 4) | (d[2] >> 4);
403
    if (code == 0x10) {
404
        return 50;
405
    }
406
    return 0;
407
}
408

    
409
static int ac3_probe(AVProbeData *p)
410
{
411
    int score=0;
412

    
413
    if(p->buf_size < 6)
414
        return 0;
415

    
416
    if((p->buf[0] == 0x0B) && (p->buf[1] == 0x77) &&    // sync word
417
       ((p->buf[4] >> 6) != 3) &&                       // fscod
418
       ((p->buf[5] >> 3) <= 16)) {                      // bsid
419
        score = AVPROBE_SCORE_MAX / 2 + 10;
420
    }
421

    
422
    return score;
423
}
424

    
425
AVInputFormat shorten_demuxer = {
426
    "shn",
427
    "raw shorten",
428
    0,
429
    NULL,
430
    shorten_read_header,
431
    raw_read_partial_packet,
432
    raw_read_close,
433
    .flags= AVFMT_GENERIC_INDEX,
434
    .extensions = "shn",
435
};
436

    
437
AVInputFormat flac_demuxer = {
438
    "flac",
439
    "raw flac",
440
    0,
441
    NULL,
442
    flac_read_header,
443
    raw_read_partial_packet,
444
    raw_read_close,
445
    .flags= AVFMT_GENERIC_INDEX,
446
    .extensions = "flac",
447
};
448

    
449
#ifdef CONFIG_MUXERS
450
AVOutputFormat flac_muxer = {
451
    "flac",
452
    "raw flac",
453
    "audio/x-flac",
454
    "flac",
455
    0,
456
    CODEC_ID_FLAC,
457
    0,
458
    flac_write_header,
459
    raw_write_packet,
460
    raw_write_trailer,
461
    .flags= AVFMT_NOTIMESTAMPS,
462
};
463
#endif //CONFIG_MUXERS
464

    
465
AVInputFormat ac3_demuxer = {
466
    "ac3",
467
    "raw ac3",
468
    0,
469
    ac3_probe,
470
    ac3_read_header,
471
    raw_read_partial_packet,
472
    raw_read_close,
473
    .flags= AVFMT_GENERIC_INDEX,
474
    .extensions = "ac3",
475
};
476

    
477
#ifdef CONFIG_MUXERS
478
AVOutputFormat ac3_muxer = {
479
    "ac3",
480
    "raw ac3",
481
    "audio/x-ac3",
482
    "ac3",
483
    0,
484
    CODEC_ID_AC3,
485
    0,
486
    raw_write_header,
487
    raw_write_packet,
488
    raw_write_trailer,
489
    .flags= AVFMT_NOTIMESTAMPS,
490
};
491
#endif //CONFIG_MUXERS
492

    
493
AVInputFormat dts_demuxer = {
494
    "dts",
495
    "raw dts",
496
    0,
497
    NULL,
498
    dts_read_header,
499
    raw_read_partial_packet,
500
    raw_read_close,
501
    .flags= AVFMT_GENERIC_INDEX,
502
    .extensions = "dts",
503
};
504

    
505
AVInputFormat aac_demuxer = {
506
    "aac",
507
    "ADTS AAC",
508
    0,
509
    NULL,
510
    aac_read_header,
511
    raw_read_partial_packet,
512
    raw_read_close,
513
    .flags= AVFMT_GENERIC_INDEX,
514
    .extensions = "aac",
515
};
516

    
517
AVInputFormat h261_demuxer = {
518
    "h261",
519
    "raw h261",
520
    0,
521
    h261_probe,
522
    video_read_header,
523
    raw_read_partial_packet,
524
    raw_read_close,
525
    .flags= AVFMT_GENERIC_INDEX,
526
    .extensions = "h261",
527
    .value = CODEC_ID_H261,
528
};
529

    
530
#ifdef CONFIG_MUXERS
531
AVOutputFormat h261_muxer = {
532
    "h261",
533
    "raw h261",
534
    "video/x-h261",
535
    "h261",
536
    0,
537
    0,
538
    CODEC_ID_H261,
539
    raw_write_header,
540
    raw_write_packet,
541
    raw_write_trailer,
542
    .flags= AVFMT_NOTIMESTAMPS,
543
};
544
#endif //CONFIG_MUXERS
545

    
546
AVInputFormat h263_demuxer = {
547
    "h263",
548
    "raw h263",
549
    0,
550
    h263_probe,
551
    video_read_header,
552
    raw_read_partial_packet,
553
    raw_read_close,
554
    .flags= AVFMT_GENERIC_INDEX,
555
//    .extensions = "h263", //FIXME remove after writing mpeg4_probe
556
    .value = CODEC_ID_H263,
557
};
558

    
559
#ifdef CONFIG_MUXERS
560
AVOutputFormat h263_muxer = {
561
    "h263",
562
    "raw h263",
563
    "video/x-h263",
564
    "h263",
565
    0,
566
    0,
567
    CODEC_ID_H263,
568
    raw_write_header,
569
    raw_write_packet,
570
    raw_write_trailer,
571
    .flags= AVFMT_NOTIMESTAMPS,
572
};
573
#endif //CONFIG_MUXERS
574

    
575
AVInputFormat m4v_demuxer = {
576
    "m4v",
577
    "raw MPEG4 video format",
578
    0,
579
    mpeg4video_probe, /** probing for mpeg4 data */
580
    video_read_header,
581
    raw_read_partial_packet,
582
    raw_read_close,
583
    .flags= AVFMT_GENERIC_INDEX,
584
    .extensions = "m4v", //FIXME remove after writing mpeg4_probe
585
    .value = CODEC_ID_MPEG4,
586
};
587

    
588
#ifdef CONFIG_MUXERS
589
AVOutputFormat m4v_muxer = {
590
    "m4v",
591
    "raw MPEG4 video format",
592
    NULL,
593
    "m4v",
594
    0,
595
    CODEC_ID_NONE,
596
    CODEC_ID_MPEG4,
597
    raw_write_header,
598
    raw_write_packet,
599
    raw_write_trailer,
600
    .flags= AVFMT_NOTIMESTAMPS,
601
};
602
#endif //CONFIG_MUXERS
603

    
604
AVInputFormat h264_demuxer = {
605
    "h264",
606
    "raw H264 video format",
607
    0,
608
    NULL /*mpegvideo_probe*/,
609
    video_read_header,
610
    raw_read_partial_packet,
611
    raw_read_close,
612
    .flags= AVFMT_GENERIC_INDEX,
613
    .extensions = "h26l,h264,264", //FIXME remove after writing mpeg4_probe
614
    .value = CODEC_ID_H264,
615
};
616

    
617
#ifdef CONFIG_MUXERS
618
AVOutputFormat h264_muxer = {
619
    "h264",
620
    "raw H264 video format",
621
    NULL,
622
    "h264",
623
    0,
624
    CODEC_ID_NONE,
625
    CODEC_ID_H264,
626
    raw_write_header,
627
    raw_write_packet,
628
    raw_write_trailer,
629
    .flags= AVFMT_NOTIMESTAMPS,
630
};
631
#endif //CONFIG_MUXERS
632

    
633
AVInputFormat mpegvideo_demuxer = {
634
    "mpegvideo",
635
    "MPEG video",
636
    0,
637
    mpegvideo_probe,
638
    video_read_header,
639
    raw_read_partial_packet,
640
    raw_read_close,
641
    .flags= AVFMT_GENERIC_INDEX,
642
    .value = CODEC_ID_MPEG1VIDEO,
643
};
644

    
645
#ifdef CONFIG_MUXERS
646
AVOutputFormat mpeg1video_muxer = {
647
    "mpeg1video",
648
    "MPEG video",
649
    "video/x-mpeg",
650
    "mpg,mpeg,m1v",
651
    0,
652
    0,
653
    CODEC_ID_MPEG1VIDEO,
654
    raw_write_header,
655
    raw_write_packet,
656
    raw_write_trailer,
657
    .flags= AVFMT_NOTIMESTAMPS,
658
};
659
#endif //CONFIG_MUXERS
660

    
661
#ifdef CONFIG_MUXERS
662
AVOutputFormat mpeg2video_muxer = {
663
    "mpeg2video",
664
    "MPEG2 video",
665
    NULL,
666
    "m2v",
667
    0,
668
    0,
669
    CODEC_ID_MPEG2VIDEO,
670
    raw_write_header,
671
    raw_write_packet,
672
    raw_write_trailer,
673
    .flags= AVFMT_NOTIMESTAMPS,
674
};
675
#endif //CONFIG_MUXERS
676

    
677
AVInputFormat mjpeg_demuxer = {
678
    "mjpeg",
679
    "MJPEG video",
680
    0,
681
    NULL,
682
    video_read_header,
683
    raw_read_partial_packet,
684
    raw_read_close,
685
    .flags= AVFMT_GENERIC_INDEX,
686
    .extensions = "mjpg,mjpeg",
687
    .value = CODEC_ID_MJPEG,
688
};
689

    
690
AVInputFormat ingenient_demuxer = {
691
    "ingenient",
692
    "Ingenient MJPEG",
693
    0,
694
    NULL,
695
    video_read_header,
696
    ingenient_read_packet,
697
    raw_read_close,
698
    .flags= AVFMT_GENERIC_INDEX,
699
    .extensions = "cgi", // FIXME
700
    .value = CODEC_ID_MJPEG,
701
};
702

    
703
#ifdef CONFIG_MUXERS
704
AVOutputFormat mjpeg_muxer = {
705
    "mjpeg",
706
    "MJPEG video",
707
    "video/x-mjpeg",
708
    "mjpg,mjpeg",
709
    0,
710
    0,
711
    CODEC_ID_MJPEG,
712
    raw_write_header,
713
    raw_write_packet,
714
    raw_write_trailer,
715
    .flags= AVFMT_NOTIMESTAMPS,
716
};
717
#endif //CONFIG_MUXERS
718

    
719
AVInputFormat vc1_demuxer = {
720
    "vc1",
721
    "raw vc1",
722
    0,
723
    NULL /* vc1_probe */,
724
    video_read_header,
725
    raw_read_partial_packet,
726
    raw_read_close,
727
    .extensions = "vc1",
728
    .value = CODEC_ID_VC1,
729
};
730

    
731
/* pcm formats */
732

    
733
#define PCMINPUTDEF(name, long_name, ext, codec) \
734
AVInputFormat pcm_ ## name ## _demuxer = {\
735
    #name,\
736
    long_name,\
737
    0,\
738
    NULL,\
739
    raw_read_header,\
740
    raw_read_packet,\
741
    raw_read_close,\
742
    pcm_read_seek,\
743
    .flags= AVFMT_GENERIC_INDEX,\
744
    .extensions = ext,\
745
    .value = codec,\
746
};
747

    
748
#define PCMOUTPUTDEF(name, long_name, ext, codec) \
749
AVOutputFormat pcm_ ## name ## _muxer = {\
750
    #name,\
751
    long_name,\
752
    NULL,\
753
    ext,\
754
    0,\
755
    codec,\
756
    0,\
757
    raw_write_header,\
758
    raw_write_packet,\
759
    raw_write_trailer,\
760
    .flags= AVFMT_NOTIMESTAMPS,\
761
};
762

    
763

    
764
#if !defined(CONFIG_MUXERS) && defined(CONFIG_DEMUXERS)
765
#define PCMDEF(name, long_name, ext, codec) \
766
        PCMINPUTDEF(name, long_name, ext, codec)
767
#elif defined(CONFIG_MUXERS) && !defined(CONFIG_DEMUXERS)
768
#define PCMDEF(name, long_name, ext, codec) \
769
        PCMOUTPUTDEF(name, long_name, ext, codec)
770
#elif defined(CONFIG_MUXERS) && defined(CONFIG_DEMUXERS)
771
#define PCMDEF(name, long_name, ext, codec) \
772
        PCMINPUTDEF(name, long_name, ext, codec)\
773
        PCMOUTPUTDEF(name, long_name, ext, codec)
774
#else
775
#define PCMDEF(name, long_name, ext, codec)
776
#endif
777

    
778
#ifdef WORDS_BIGENDIAN
779
#define BE_DEF(s) s
780
#define LE_DEF(s) NULL
781
#else
782
#define BE_DEF(s) NULL
783
#define LE_DEF(s) s
784
#endif
785

    
786

    
787
PCMDEF(s16le, "pcm signed 16 bit little endian format",
788
       LE_DEF("sw"), CODEC_ID_PCM_S16LE)
789

    
790
PCMDEF(s16be, "pcm signed 16 bit big endian format",
791
       BE_DEF("sw"), CODEC_ID_PCM_S16BE)
792

    
793
PCMDEF(u16le, "pcm unsigned 16 bit little endian format",
794
       LE_DEF("uw"), CODEC_ID_PCM_U16LE)
795

    
796
PCMDEF(u16be, "pcm unsigned 16 bit big endian format",
797
       BE_DEF("uw"), CODEC_ID_PCM_U16BE)
798

    
799
PCMDEF(s8, "pcm signed 8 bit format",
800
       "sb", CODEC_ID_PCM_S8)
801

    
802
PCMDEF(u8, "pcm unsigned 8 bit format",
803
       "ub", CODEC_ID_PCM_U8)
804

    
805
PCMDEF(mulaw, "pcm mu law format",
806
       "ul", CODEC_ID_PCM_MULAW)
807

    
808
PCMDEF(alaw, "pcm A law format",
809
       "al", CODEC_ID_PCM_ALAW)
810

    
811
static int rawvideo_read_packet(AVFormatContext *s, AVPacket *pkt)
812
{
813
    int packet_size, ret, width, height;
814
    AVStream *st = s->streams[0];
815

    
816
    width = st->codec->width;
817
    height = st->codec->height;
818

    
819
    packet_size = avpicture_get_size(st->codec->pix_fmt, width, height);
820
    if (packet_size < 0)
821
        return -1;
822

    
823
    ret= av_get_packet(&s->pb, pkt, packet_size);
824

    
825
    pkt->stream_index = 0;
826
    if (ret != packet_size) {
827
        return AVERROR_IO;
828
    } else {
829
        return 0;
830
    }
831
}
832

    
833
AVInputFormat rawvideo_demuxer = {
834
    "rawvideo",
835
    "raw video format",
836
    0,
837
    NULL,
838
    raw_read_header,
839
    rawvideo_read_packet,
840
    raw_read_close,
841
    .flags= AVFMT_GENERIC_INDEX,
842
    .extensions = "yuv,cif,qcif",
843
    .value = CODEC_ID_RAWVIDEO,
844
};
845

    
846
#ifdef CONFIG_MUXERS
847
AVOutputFormat rawvideo_muxer = {
848
    "rawvideo",
849
    "raw video format",
850
    NULL,
851
    "yuv",
852
    0,
853
    CODEC_ID_NONE,
854
    CODEC_ID_RAWVIDEO,
855
    raw_write_header,
856
    raw_write_packet,
857
    raw_write_trailer,
858
    .flags= AVFMT_NOTIMESTAMPS,
859
};
860
#endif //CONFIG_MUXERS
861

    
862
#ifdef CONFIG_MUXERS
863
static int null_write_packet(struct AVFormatContext *s, AVPacket *pkt)
864
{
865
    return 0;
866
}
867

    
868
AVOutputFormat null_muxer = {
869
    "null",
870
    "null video format",
871
    NULL,
872
    NULL,
873
    0,
874
#ifdef WORDS_BIGENDIAN
875
    CODEC_ID_PCM_S16BE,
876
#else
877
    CODEC_ID_PCM_S16LE,
878
#endif
879
    CODEC_ID_RAWVIDEO,
880
    raw_write_header,
881
    null_write_packet,
882
    raw_write_trailer,
883
    .flags = AVFMT_NOFILE | AVFMT_RAWPICTURE | AVFMT_NOTIMESTAMPS,
884
};
885
#endif //CONFIG_MUXERS