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1
/*
2
 * RAW muxer and demuxer
3
 * Copyright (c) 2001 Fabrice Bellard
4
 * Copyright (c) 2005 Alex Beregszaszi
5
 *
6
 * 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
21
 */
22

    
23
#include "libavutil/crc.h"
24
#include "libavcodec/ac3_parser.h"
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#include "libavcodec/get_bits.h"
26
#include "libavcodec/bytestream.h"
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#include "avformat.h"
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#include "raw.h"
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#include "id3v2.h"
30
#include "id3v1.h"
31

    
32
/* simple formats */
33

    
34
#if CONFIG_NULL_MUXER
35
static int null_write_packet(struct AVFormatContext *s, AVPacket *pkt)
36
{
37
    return 0;
38
}
39
#endif
40

    
41
#if CONFIG_MUXERS
42
int ff_raw_write_packet(AVFormatContext *s, AVPacket *pkt)
43
{
44
    put_buffer(s->pb, pkt->data, pkt->size);
45
    put_flush_packet(s->pb);
46
    return 0;
47
}
48
#endif
49

    
50
#if CONFIG_DEMUXERS
51
/* raw input */
52
static int raw_read_header(AVFormatContext *s, AVFormatParameters *ap)
53
{
54
    AVStream *st;
55
    enum CodecID id;
56

    
57
    st = av_new_stream(s, 0);
58
    if (!st)
59
        return AVERROR(ENOMEM);
60

    
61
        id = s->iformat->value;
62
        if (id == CODEC_ID_RAWVIDEO) {
63
            st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
64
        } else {
65
            st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
66
        }
67
        st->codec->codec_id = id;
68

    
69
        switch(st->codec->codec_type) {
70
        case AVMEDIA_TYPE_AUDIO:
71
            st->codec->sample_rate = ap->sample_rate;
72
            if(ap->channels) st->codec->channels = ap->channels;
73
            else             st->codec->channels = 1;
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            st->codec->bits_per_coded_sample = av_get_bits_per_sample(st->codec->codec_id);
75
            assert(st->codec->bits_per_coded_sample > 0);
76
            st->codec->block_align = st->codec->bits_per_coded_sample*st->codec->channels/8;
77
            av_set_pts_info(st, 64, 1, st->codec->sample_rate);
78
            break;
79
        case AVMEDIA_TYPE_VIDEO:
80
            if(ap->time_base.num)
81
                av_set_pts_info(st, 64, ap->time_base.num, ap->time_base.den);
82
            else
83
                av_set_pts_info(st, 64, 1, 25);
84
            st->codec->width = ap->width;
85
            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
#define RAW_SAMPLES     1024
98

    
99
static int raw_read_packet(AVFormatContext *s, AVPacket *pkt)
100
{
101
    int ret, size, bps;
102
    //    AVStream *st = s->streams[0];
103

    
104
    size= RAW_SAMPLES*s->streams[0]->codec->block_align;
105

    
106
    ret= av_get_packet(s->pb, pkt, size);
107

    
108
    pkt->stream_index = 0;
109
    if (ret < 0)
110
        return ret;
111

    
112
    bps= av_get_bits_per_sample(s->streams[0]->codec->codec_id);
113
    assert(bps); // if false there IS a bug elsewhere (NOT in this function)
114
    pkt->dts=
115
    pkt->pts= pkt->pos*8 / (bps * s->streams[0]->codec->channels);
116

    
117
    return ret;
118
}
119

    
120
int ff_raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt)
121
{
122
    int ret, size;
123

    
124
    size = RAW_PACKET_SIZE;
125

    
126
    if (av_new_packet(pkt, size) < 0)
127
        return AVERROR(ENOMEM);
128

    
129
    pkt->pos= url_ftell(s->pb);
130
    pkt->stream_index = 0;
131
    ret = get_partial_buffer(s->pb, pkt->data, size);
132
    if (ret < 0) {
133
        av_free_packet(pkt);
134
        return ret;
135
    }
136
    pkt->size = ret;
137
    return ret;
138
}
139
#endif
140

    
141
#if CONFIG_RAWVIDEO_DEMUXER
142
static int rawvideo_read_packet(AVFormatContext *s, AVPacket *pkt)
143
{
144
    int packet_size, ret, width, height;
145
    AVStream *st = s->streams[0];
146

    
147
    width = st->codec->width;
148
    height = st->codec->height;
149

    
150
    packet_size = avpicture_get_size(st->codec->pix_fmt, width, height);
151
    if (packet_size < 0)
152
        return -1;
153

    
154
    ret= av_get_packet(s->pb, pkt, packet_size);
155
    pkt->pts=
156
    pkt->dts= pkt->pos / packet_size;
157

    
158
    pkt->stream_index = 0;
159
    if (ret < 0)
160
        return ret;
161
    return 0;
162
}
163
#endif
164

    
165
#if CONFIG_INGENIENT_DEMUXER
166
// http://www.artificis.hu/files/texts/ingenient.txt
167
static int ingenient_read_packet(AVFormatContext *s, AVPacket *pkt)
168
{
169
    int ret, size, w, h, unk1, unk2;
170

    
171
    if (get_le32(s->pb) != MKTAG('M', 'J', 'P', 'G'))
172
        return AVERROR(EIO); // FIXME
173

    
174
    size = get_le32(s->pb);
175

    
176
    w = get_le16(s->pb);
177
    h = get_le16(s->pb);
178

    
179
    url_fskip(s->pb, 8); // zero + size (padded?)
180
    url_fskip(s->pb, 2);
181
    unk1 = get_le16(s->pb);
182
    unk2 = get_le16(s->pb);
183
    url_fskip(s->pb, 22); // ASCII timestamp
184

    
185
    av_log(s, AV_LOG_DEBUG, "Ingenient packet: size=%d, width=%d, height=%d, unk1=%d unk2=%d\n",
186
        size, w, h, unk1, unk2);
187

    
188
    if (av_new_packet(pkt, size) < 0)
189
        return AVERROR(ENOMEM);
190

    
191
    pkt->pos = url_ftell(s->pb);
192
    pkt->stream_index = 0;
193
    ret = get_buffer(s->pb, pkt->data, size);
194
    if (ret < 0) {
195
        av_free_packet(pkt);
196
        return ret;
197
    }
198
    pkt->size = ret;
199
    return ret;
200
}
201
#endif
202

    
203
#if CONFIG_DEMUXERS
204
int pcm_read_seek(AVFormatContext *s,
205
                  int stream_index, int64_t timestamp, int flags)
206
{
207
    AVStream *st;
208
    int block_align, byte_rate;
209
    int64_t pos, ret;
210

    
211
    st = s->streams[0];
212

    
213
    block_align = st->codec->block_align ? st->codec->block_align :
214
        (av_get_bits_per_sample(st->codec->codec_id) * st->codec->channels) >> 3;
215
    byte_rate = st->codec->bit_rate ? st->codec->bit_rate >> 3 :
216
        block_align * st->codec->sample_rate;
217

    
218
    if (block_align <= 0 || byte_rate <= 0)
219
        return -1;
220
    if (timestamp < 0) timestamp = 0;
221

    
222
    /* compute the position by aligning it to block_align */
223
    pos = av_rescale_rnd(timestamp * byte_rate,
224
                         st->time_base.num,
225
                         st->time_base.den * (int64_t)block_align,
226
                         (flags & AVSEEK_FLAG_BACKWARD) ? AV_ROUND_DOWN : AV_ROUND_UP);
227
    pos *= block_align;
228

    
229
    /* recompute exact position */
230
    st->cur_dts = av_rescale(pos, st->time_base.den, byte_rate * (int64_t)st->time_base.num);
231
    if ((ret = url_fseek(s->pb, pos + s->data_offset, SEEK_SET)) < 0)
232
        return ret;
233
    return 0;
234
}
235

    
236
static int audio_read_header(AVFormatContext *s,
237
                             AVFormatParameters *ap)
238
{
239
    AVStream *st = av_new_stream(s, 0);
240
    if (!st)
241
        return AVERROR(ENOMEM);
242
    st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
243
    st->codec->codec_id = s->iformat->value;
244
    st->need_parsing = AVSTREAM_PARSE_FULL;
245
    /* the parameters will be extracted from the compressed bitstream */
246

    
247
    return 0;
248
}
249

    
250
/* MPEG-1/H.263 input */
251
static int video_read_header(AVFormatContext *s,
252
                             AVFormatParameters *ap)
253
{
254
    AVStream *st;
255

    
256
    st = av_new_stream(s, 0);
257
    if (!st)
258
        return AVERROR(ENOMEM);
259

    
260
    st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
261
    st->codec->codec_id = s->iformat->value;
262
    st->need_parsing = AVSTREAM_PARSE_FULL;
263

    
264
    /* for MJPEG, specify frame rate */
265
    /* for MPEG-4 specify it, too (most MPEG-4 streams do not have the fixed_vop_rate set ...)*/
266
    if (ap->time_base.num) {
267
        st->codec->time_base= ap->time_base;
268
    } else if ( st->codec->codec_id == CODEC_ID_MJPEG ||
269
                st->codec->codec_id == CODEC_ID_MPEG4 ||
270
                st->codec->codec_id == CODEC_ID_DIRAC ||
271
                st->codec->codec_id == CODEC_ID_DNXHD ||
272
                st->codec->codec_id == CODEC_ID_VC1   ||
273
                st->codec->codec_id == CODEC_ID_H264) {
274
        st->codec->time_base= (AVRational){1,25};
275
    }
276
    av_set_pts_info(st, 64, 1, 1200000);
277

    
278
    return 0;
279
}
280
#endif
281

    
282
#if CONFIG_MPEGVIDEO_DEMUXER
283
#define SEQ_START_CODE          0x000001b3
284
#define GOP_START_CODE          0x000001b8
285
#define PICTURE_START_CODE      0x00000100
286
#define SLICE_START_CODE        0x00000101
287
#define PACK_START_CODE         0x000001ba
288
#define VIDEO_ID                0x000001e0
289
#define AUDIO_ID                0x000001c0
290

    
291
static int mpegvideo_probe(AVProbeData *p)
292
{
293
    uint32_t code= -1;
294
    int pic=0, seq=0, slice=0, pspack=0, pes=0;
295
    int i;
296

    
297
    for(i=0; i<p->buf_size; i++){
298
        code = (code<<8) + p->buf[i];
299
        if ((code & 0xffffff00) == 0x100) {
300
            switch(code){
301
            case     SEQ_START_CODE:   seq++; break;
302
            case PICTURE_START_CODE:   pic++; break;
303
            case   SLICE_START_CODE: slice++; break;
304
            case    PACK_START_CODE: pspack++; break;
305
            }
306
            if     ((code & 0x1f0) == VIDEO_ID)   pes++;
307
            else if((code & 0x1e0) == AUDIO_ID)   pes++;
308
        }
309
    }
310
    if(seq && seq*9<=pic*10 && pic*9<=slice*10 && !pspack && !pes)
311
        return pic>1 ? AVPROBE_SCORE_MAX/2+1 : AVPROBE_SCORE_MAX/4; // +1 for .mpg
312
    return 0;
313
}
314
#endif
315

    
316
#if CONFIG_CAVSVIDEO_DEMUXER
317
#define CAVS_SEQ_START_CODE       0x000001b0
318
#define CAVS_PIC_I_START_CODE     0x000001b3
319
#define CAVS_UNDEF_START_CODE     0x000001b4
320
#define CAVS_PIC_PB_START_CODE    0x000001b6
321
#define CAVS_VIDEO_EDIT_CODE      0x000001b7
322
#define CAVS_PROFILE_JIZHUN       0x20
323

    
324
static int cavsvideo_probe(AVProbeData *p)
325
{
326
    uint32_t code= -1;
327
    int pic=0, seq=0, slice_pos = 0;
328
    int i;
329

    
330
    for(i=0; i<p->buf_size; i++){
331
        code = (code<<8) + p->buf[i];
332
        if ((code & 0xffffff00) == 0x100) {
333
            if(code < CAVS_SEQ_START_CODE) {
334
                /* slices have to be consecutive */
335
                if(code < slice_pos)
336
                    return 0;
337
                slice_pos = code;
338
            } else {
339
                slice_pos = 0;
340
            }
341
            if (code == CAVS_SEQ_START_CODE) {
342
                seq++;
343
                /* check for the only currently supported profile */
344
                if(p->buf[i+1] != CAVS_PROFILE_JIZHUN)
345
                    return 0;
346
            } else if ((code == CAVS_PIC_I_START_CODE) ||
347
                       (code == CAVS_PIC_PB_START_CODE)) {
348
                pic++;
349
            } else if ((code == CAVS_UNDEF_START_CODE) ||
350
                       (code >  CAVS_VIDEO_EDIT_CODE)) {
351
                return 0;
352
            }
353
        }
354
    }
355
    if(seq && seq*9<=pic*10)
356
        return AVPROBE_SCORE_MAX/2;
357
    return 0;
358
}
359
#endif
360

    
361
#if CONFIG_M4V_DEMUXER
362
#define VISUAL_OBJECT_START_CODE       0x000001b5
363
#define VOP_START_CODE                 0x000001b6
364

    
365
static int mpeg4video_probe(AVProbeData *probe_packet)
366
{
367
    uint32_t temp_buffer= -1;
368
    int VO=0, VOL=0, VOP = 0, VISO = 0, res=0;
369
    int i;
370

    
371
    for(i=0; i<probe_packet->buf_size; i++){
372
        temp_buffer = (temp_buffer<<8) + probe_packet->buf[i];
373
        if ((temp_buffer & 0xffffff00) != 0x100)
374
            continue;
375

    
376
        if (temp_buffer == VOP_START_CODE)                         VOP++;
377
        else if (temp_buffer == VISUAL_OBJECT_START_CODE)          VISO++;
378
        else if (temp_buffer < 0x120)                              VO++;
379
        else if (temp_buffer < 0x130)                              VOL++;
380
        else if (   !(0x1AF < temp_buffer && temp_buffer < 0x1B7)
381
                 && !(0x1B9 < temp_buffer && temp_buffer < 0x1C4)) res++;
382
    }
383

    
384
    if ( VOP >= VISO && VOP >= VOL && VO >= VOL && VOL > 0 && res==0)
385
        return AVPROBE_SCORE_MAX/2;
386
    return 0;
387
}
388
#endif
389

    
390
#if CONFIG_H264_DEMUXER
391
static int h264_probe(AVProbeData *p)
392
{
393
    uint32_t code= -1;
394
    int sps=0, pps=0, idr=0, res=0, sli=0;
395
    int i;
396

    
397
    for(i=0; i<p->buf_size; i++){
398
        code = (code<<8) + p->buf[i];
399
        if ((code & 0xffffff00) == 0x100) {
400
            int ref_idc= (code>>5)&3;
401
            int type   = code & 0x1F;
402
            static const int8_t ref_zero[32]={
403
                2, 0, 0, 0, 0,-1, 1,-1,
404
               -1, 1, 1, 1, 1,-1, 2, 2,
405
                2, 2, 2, 0, 2, 2, 2, 2,
406
                2, 2, 2, 2, 2, 2, 2, 2
407
            };
408

    
409
            if(code & 0x80) //forbidden bit
410
                return 0;
411

    
412
            if(ref_zero[type] == 1 && ref_idc)
413
                return 0;
414
            if(ref_zero[type] ==-1 && !ref_idc)
415
                return 0;
416
            if(ref_zero[type] == 2)
417
                res++;
418

    
419
            switch(type){
420
            case     1:   sli++; break;
421
            case     5:   idr++; break;
422
            case     7:
423
                if(p->buf[i+2]&0x0F)
424
                    return 0;
425
                sps++;
426
                break;
427
            case     8:   pps++; break;
428
            }
429
        }
430
    }
431
    if(sps && pps && (idr||sli>3) && res<(sps+pps+idr))
432
        return AVPROBE_SCORE_MAX/2+1; // +1 for .mpg
433
    return 0;
434
}
435
#endif
436

    
437
#if CONFIG_H263_DEMUXER
438
static int h263_probe(AVProbeData *p)
439
{
440
    uint64_t code= -1;
441
    int i;
442
    int valid_psc=0;
443
    int invalid_psc=0;
444
    int res_change=0;
445
    int src_fmt, last_src_fmt=-1;
446
    int last_gn=0;
447

    
448
    for(i=0; i<p->buf_size; i++){
449
        code = (code<<8) + p->buf[i];
450
        if ((code & 0xfffffc0000) == 0x800000) {
451
            src_fmt= (code>>2)&3;
452
            if(   src_fmt != last_src_fmt
453
               && last_src_fmt>0 && last_src_fmt<6
454
               && src_fmt<6)
455
                res_change++;
456

    
457
            if((code&0x300)==0x200 && src_fmt){
458
                valid_psc++;
459
                last_gn=0;
460
            }else
461
                invalid_psc++;
462
            last_src_fmt= src_fmt;
463
        } else if((code & 0xffff800000) == 0x800000) {
464
            int gn= (code>>(23-5)) & 0x1F;
465
            if(gn<last_gn){
466
                invalid_psc++;
467
            }else
468
                last_gn= gn;
469
        }
470
    }
471
//av_log(NULL, AV_LOG_ERROR, "h263_probe: psc:%d invalid:%d res_change:%d\n", valid_psc, invalid_psc, res_change);
472
//h263_probe: psc:3 invalid:0 res_change:0 (1588/recent_ffmpeg_parses_mpg_incorrectly.mpg)
473
    if(valid_psc > 2*invalid_psc + 2*res_change + 3){
474
        return 50;
475
    }else if(valid_psc > 2*invalid_psc)
476
        return 25;
477
    return 0;
478
}
479
#endif
480

    
481
#if CONFIG_H261_DEMUXER
482
static int h261_probe(AVProbeData *p)
483
{
484
    uint32_t code= -1;
485
    int i;
486
    int valid_psc=0;
487
    int invalid_psc=0;
488
    int next_gn=0;
489
    int src_fmt=0;
490
    GetBitContext gb;
491

    
492
    init_get_bits(&gb, p->buf, p->buf_size*8);
493

    
494
    for(i=0; i<p->buf_size*8; i++){
495
        if ((code & 0x01ff0000) || !(code & 0xff00)) {
496
            code = (code<<8) + get_bits(&gb, 8);
497
            i += 7;
498
        } else
499
            code = (code<<1) + get_bits1(&gb);
500
        if ((code & 0xffff0000) == 0x10000) {
501
            int gn= (code>>12)&0xf;
502
            if(!gn)
503
                src_fmt= code&8;
504
            if(gn != next_gn) invalid_psc++;
505
            else              valid_psc++;
506

    
507
            if(src_fmt){ // CIF
508
                next_gn= (gn+1     )%13;
509
            }else{       //QCIF
510
                next_gn= (gn+1+!!gn)% 7;
511
            }
512
        }
513
    }
514
    if(valid_psc > 2*invalid_psc + 6){
515
        return 50;
516
    }else if(valid_psc > 2*invalid_psc + 2)
517
        return 25;
518
    return 0;
519
}
520
#endif
521

    
522
#if CONFIG_DTS_DEMUXER
523
#define DCA_MARKER_14B_BE 0x1FFFE800
524
#define DCA_MARKER_14B_LE 0xFF1F00E8
525
#define DCA_MARKER_RAW_BE 0x7FFE8001
526
#define DCA_MARKER_RAW_LE 0xFE7F0180
527
static int dts_probe(AVProbeData *p)
528
{
529
    const uint8_t *buf, *bufp;
530
    uint32_t state = -1;
531
    int markers[3] = {0};
532
    int sum, max;
533

    
534
    buf = p->buf;
535

    
536
    for(; buf < (p->buf+p->buf_size)-2; buf+=2) {
537
        bufp = buf;
538
        state = (state << 16) | bytestream_get_be16(&bufp);
539

    
540
        /* regular bitstream */
541
        if (state == DCA_MARKER_RAW_BE || state == DCA_MARKER_RAW_LE)
542
            markers[0]++;
543

    
544
        /* 14 bits big-endian bitstream */
545
        if (state == DCA_MARKER_14B_BE)
546
            if ((bytestream_get_be16(&bufp) & 0xFFF0) == 0x07F0)
547
                markers[1]++;
548

    
549
        /* 14 bits little-endian bitstream */
550
        if (state == DCA_MARKER_14B_LE)
551
            if ((bytestream_get_be16(&bufp) & 0xF0FF) == 0xF007)
552
                markers[2]++;
553
    }
554
    sum = markers[0] + markers[1] + markers[2];
555
    max = markers[1] > markers[0];
556
    max = markers[2] > markers[max] ? 2 : max;
557
    if (markers[max] > 3 && p->buf_size / markers[max] < 32*1024 &&
558
        markers[max] * 4 > sum * 3)
559
        return AVPROBE_SCORE_MAX/2+1;
560

    
561
    return 0;
562
}
563
#endif
564

    
565
#if CONFIG_DIRAC_DEMUXER
566
static int dirac_probe(AVProbeData *p)
567
{
568
    if (AV_RL32(p->buf) == MKTAG('B', 'B', 'C', 'D'))
569
        return AVPROBE_SCORE_MAX;
570
    else
571
        return 0;
572
}
573
#endif
574

    
575
#if CONFIG_DNXHD_DEMUXER
576
static int dnxhd_probe(AVProbeData *p)
577
{
578
    static const uint8_t header[] = {0x00,0x00,0x02,0x80,0x01};
579
    int w, h, compression_id;
580
    if (p->buf_size < 0x2c)
581
        return 0;
582
    if (memcmp(p->buf, header, 5))
583
        return 0;
584
    h = AV_RB16(p->buf + 0x18);
585
    w = AV_RB16(p->buf + 0x1a);
586
    if (!w || !h)
587
        return 0;
588
    compression_id = AV_RB32(p->buf + 0x28);
589
    if (compression_id < 1237 || compression_id > 1253)
590
        return 0;
591
    return AVPROBE_SCORE_MAX;
592
}
593
#endif
594

    
595
#if CONFIG_AC3_DEMUXER || CONFIG_EAC3_DEMUXER
596
static int ac3_eac3_probe(AVProbeData *p, enum CodecID expected_codec_id)
597
{
598
    int max_frames, first_frames = 0, frames;
599
    uint8_t *buf, *buf2, *end;
600
    AC3HeaderInfo hdr;
601
    GetBitContext gbc;
602
    enum CodecID codec_id = CODEC_ID_AC3;
603

    
604
    max_frames = 0;
605
    buf = p->buf;
606
    end = buf + p->buf_size;
607

    
608
    for(; buf < end; buf++) {
609
        buf2 = buf;
610

    
611
        for(frames = 0; buf2 < end; frames++) {
612
            init_get_bits(&gbc, buf2, 54);
613
            if(ff_ac3_parse_header(&gbc, &hdr) < 0)
614
                break;
615
            if(buf2 + hdr.frame_size > end ||
616
               av_crc(av_crc_get_table(AV_CRC_16_ANSI), 0, buf2 + 2, hdr.frame_size - 2))
617
                break;
618
            if (hdr.bitstream_id > 10)
619
                codec_id = CODEC_ID_EAC3;
620
            buf2 += hdr.frame_size;
621
        }
622
        max_frames = FFMAX(max_frames, frames);
623
        if(buf == p->buf)
624
            first_frames = frames;
625
    }
626
    if(codec_id != expected_codec_id) return 0;
627
    // keep this in sync with mp3 probe, both need to avoid
628
    // issues with MPEG-files!
629
    if   (first_frames>=4) return AVPROBE_SCORE_MAX/2+1;
630
    else if(max_frames>500)return AVPROBE_SCORE_MAX/2;
631
    else if(max_frames>=4) return AVPROBE_SCORE_MAX/4;
632
    else if(max_frames>=1) return 1;
633
    else                   return 0;
634
}
635
#endif
636

    
637
#if CONFIG_AC3_DEMUXER
638
static int ac3_probe(AVProbeData *p)
639
{
640
    return ac3_eac3_probe(p, CODEC_ID_AC3);
641
}
642
#endif
643

    
644
#if CONFIG_EAC3_DEMUXER
645
static int eac3_probe(AVProbeData *p)
646
{
647
    return ac3_eac3_probe(p, CODEC_ID_EAC3);
648
}
649
#endif
650

    
651
/* Note: Do not forget to add new entries to the Makefile as well. */
652

    
653
#if CONFIG_AC3_DEMUXER
654
AVInputFormat ac3_demuxer = {
655
    "ac3",
656
    NULL_IF_CONFIG_SMALL("raw AC-3"),
657
    0,
658
    ac3_probe,
659
    audio_read_header,
660
    ff_raw_read_partial_packet,
661
    .flags= AVFMT_GENERIC_INDEX,
662
    .extensions = "ac3",
663
    .value = CODEC_ID_AC3,
664
};
665
#endif
666

    
667
#if CONFIG_AC3_MUXER
668
AVOutputFormat ac3_muxer = {
669
    "ac3",
670
    NULL_IF_CONFIG_SMALL("raw AC-3"),
671
    "audio/x-ac3",
672
    "ac3",
673
    0,
674
    CODEC_ID_AC3,
675
    CODEC_ID_NONE,
676
    NULL,
677
    ff_raw_write_packet,
678
    .flags= AVFMT_NOTIMESTAMPS,
679
};
680
#endif
681

    
682
#if CONFIG_DIRAC_DEMUXER
683
AVInputFormat dirac_demuxer = {
684
    "dirac",
685
    NULL_IF_CONFIG_SMALL("raw Dirac"),
686
    0,
687
    dirac_probe,
688
    video_read_header,
689
    ff_raw_read_partial_packet,
690
    .flags= AVFMT_GENERIC_INDEX,
691
    .value = CODEC_ID_DIRAC,
692
};
693
#endif
694

    
695
#if CONFIG_DIRAC_MUXER
696
AVOutputFormat dirac_muxer = {
697
    "dirac",
698
    NULL_IF_CONFIG_SMALL("raw Dirac"),
699
    NULL,
700
    "drc",
701
    0,
702
    CODEC_ID_NONE,
703
    CODEC_ID_DIRAC,
704
    NULL,
705
    ff_raw_write_packet,
706
    .flags= AVFMT_NOTIMESTAMPS,
707
};
708
#endif
709

    
710
#if CONFIG_DNXHD_DEMUXER
711
AVInputFormat dnxhd_demuxer = {
712
    "dnxhd",
713
    NULL_IF_CONFIG_SMALL("raw DNxHD (SMPTE VC-3)"),
714
    0,
715
    dnxhd_probe,
716
    video_read_header,
717
    ff_raw_read_partial_packet,
718
    .flags= AVFMT_GENERIC_INDEX,
719
    .value = CODEC_ID_DNXHD,
720
};
721
#endif
722

    
723
#if CONFIG_DNXHD_MUXER
724
AVOutputFormat dnxhd_muxer = {
725
    "dnxhd",
726
    NULL_IF_CONFIG_SMALL("raw DNxHD (SMPTE VC-3)"),
727
    NULL,
728
    "dnxhd",
729
    0,
730
    CODEC_ID_NONE,
731
    CODEC_ID_DNXHD,
732
    NULL,
733
    ff_raw_write_packet,
734
    .flags= AVFMT_NOTIMESTAMPS,
735
};
736
#endif
737

    
738
#if CONFIG_DTS_DEMUXER
739
AVInputFormat dts_demuxer = {
740
    "dts",
741
    NULL_IF_CONFIG_SMALL("raw DTS"),
742
    0,
743
    dts_probe,
744
    audio_read_header,
745
    ff_raw_read_partial_packet,
746
    .flags= AVFMT_GENERIC_INDEX,
747
    .extensions = "dts",
748
    .value = CODEC_ID_DTS,
749
};
750
#endif
751

    
752
#if CONFIG_DTS_MUXER
753
AVOutputFormat dts_muxer = {
754
    "dts",
755
    NULL_IF_CONFIG_SMALL("raw DTS"),
756
    "audio/x-dca",
757
    "dts",
758
    0,
759
    CODEC_ID_DTS,
760
    CODEC_ID_NONE,
761
    NULL,
762
    ff_raw_write_packet,
763
    .flags= AVFMT_NOTIMESTAMPS,
764
};
765
#endif
766

    
767
#if CONFIG_EAC3_DEMUXER
768
AVInputFormat eac3_demuxer = {
769
    "eac3",
770
    NULL_IF_CONFIG_SMALL("raw E-AC-3"),
771
    0,
772
    eac3_probe,
773
    audio_read_header,
774
    ff_raw_read_partial_packet,
775
    .flags= AVFMT_GENERIC_INDEX,
776
    .extensions = "eac3",
777
    .value = CODEC_ID_EAC3,
778
};
779
#endif
780

    
781
#if CONFIG_EAC3_MUXER
782
AVOutputFormat eac3_muxer = {
783
    "eac3",
784
    NULL_IF_CONFIG_SMALL("raw E-AC-3"),
785
    "audio/x-eac3",
786
    "eac3",
787
    0,
788
    CODEC_ID_EAC3,
789
    CODEC_ID_NONE,
790
    NULL,
791
    ff_raw_write_packet,
792
    .flags= AVFMT_NOTIMESTAMPS,
793
};
794
#endif
795

    
796
#if CONFIG_GSM_DEMUXER
797
AVInputFormat gsm_demuxer = {
798
    "gsm",
799
    NULL_IF_CONFIG_SMALL("raw GSM"),
800
    0,
801
    NULL,
802
    audio_read_header,
803
    ff_raw_read_partial_packet,
804
    .flags= AVFMT_GENERIC_INDEX,
805
    .extensions = "gsm",
806
    .value = CODEC_ID_GSM,
807
};
808
#endif
809

    
810
#if CONFIG_H261_DEMUXER
811
AVInputFormat h261_demuxer = {
812
    "h261",
813
    NULL_IF_CONFIG_SMALL("raw H.261"),
814
    0,
815
    h261_probe,
816
    video_read_header,
817
    ff_raw_read_partial_packet,
818
    .flags= AVFMT_GENERIC_INDEX,
819
    .extensions = "h261",
820
    .value = CODEC_ID_H261,
821
};
822
#endif
823

    
824
#if CONFIG_H261_MUXER
825
AVOutputFormat h261_muxer = {
826
    "h261",
827
    NULL_IF_CONFIG_SMALL("raw H.261"),
828
    "video/x-h261",
829
    "h261",
830
    0,
831
    CODEC_ID_NONE,
832
    CODEC_ID_H261,
833
    NULL,
834
    ff_raw_write_packet,
835
    .flags= AVFMT_NOTIMESTAMPS,
836
};
837
#endif
838

    
839
#if CONFIG_H263_DEMUXER
840
AVInputFormat h263_demuxer = {
841
    "h263",
842
    NULL_IF_CONFIG_SMALL("raw H.263"),
843
    0,
844
    h263_probe,
845
    video_read_header,
846
    ff_raw_read_partial_packet,
847
    .flags= AVFMT_GENERIC_INDEX,
848
//    .extensions = "h263", //FIXME remove after writing mpeg4_probe
849
    .value = CODEC_ID_H263,
850
};
851
#endif
852

    
853
#if CONFIG_H263_MUXER
854
AVOutputFormat h263_muxer = {
855
    "h263",
856
    NULL_IF_CONFIG_SMALL("raw H.263"),
857
    "video/x-h263",
858
    "h263",
859
    0,
860
    CODEC_ID_NONE,
861
    CODEC_ID_H263,
862
    NULL,
863
    ff_raw_write_packet,
864
    .flags= AVFMT_NOTIMESTAMPS,
865
};
866
#endif
867

    
868
#if CONFIG_H264_DEMUXER
869
AVInputFormat h264_demuxer = {
870
    "h264",
871
    NULL_IF_CONFIG_SMALL("raw H.264 video format"),
872
    0,
873
    h264_probe,
874
    video_read_header,
875
    ff_raw_read_partial_packet,
876
    .flags= AVFMT_GENERIC_INDEX,
877
    .extensions = "h26l,h264,264", //FIXME remove after writing mpeg4_probe
878
    .value = CODEC_ID_H264,
879
};
880
#endif
881

    
882
#if CONFIG_H264_MUXER
883
AVOutputFormat h264_muxer = {
884
    "h264",
885
    NULL_IF_CONFIG_SMALL("raw H.264 video format"),
886
    NULL,
887
    "h264",
888
    0,
889
    CODEC_ID_NONE,
890
    CODEC_ID_H264,
891
    NULL,
892
    ff_raw_write_packet,
893
    .flags= AVFMT_NOTIMESTAMPS,
894
};
895
#endif
896

    
897
#if CONFIG_CAVSVIDEO_MUXER
898
AVOutputFormat cavsvideo_muxer = {
899
    "cavsvideo",
900
    NULL_IF_CONFIG_SMALL("raw Chinese AVS video"),
901
    NULL,
902
    "cavs",
903
    0,
904
    CODEC_ID_NONE,
905
    CODEC_ID_CAVS,
906
    NULL,
907
    ff_raw_write_packet,
908
    .flags= AVFMT_NOTIMESTAMPS,
909
};
910
#endif
911

    
912
#if CONFIG_INGENIENT_DEMUXER
913
AVInputFormat ingenient_demuxer = {
914
    "ingenient",
915
    NULL_IF_CONFIG_SMALL("raw Ingenient MJPEG"),
916
    0,
917
    NULL,
918
    video_read_header,
919
    ingenient_read_packet,
920
    .flags= AVFMT_GENERIC_INDEX,
921
    .extensions = "cgi", // FIXME
922
    .value = CODEC_ID_MJPEG,
923
};
924
#endif
925

    
926
#if CONFIG_M4V_DEMUXER
927
AVInputFormat m4v_demuxer = {
928
    "m4v",
929
    NULL_IF_CONFIG_SMALL("raw MPEG-4 video format"),
930
    0,
931
    mpeg4video_probe, /** probing for MPEG-4 data */
932
    video_read_header,
933
    ff_raw_read_partial_packet,
934
    .flags= AVFMT_GENERIC_INDEX,
935
    .extensions = "m4v",
936
    .value = CODEC_ID_MPEG4,
937
};
938
#endif
939

    
940
#if CONFIG_M4V_MUXER
941
AVOutputFormat m4v_muxer = {
942
    "m4v",
943
    NULL_IF_CONFIG_SMALL("raw MPEG-4 video format"),
944
    NULL,
945
    "m4v",
946
    0,
947
    CODEC_ID_NONE,
948
    CODEC_ID_MPEG4,
949
    NULL,
950
    ff_raw_write_packet,
951
    .flags= AVFMT_NOTIMESTAMPS,
952
};
953
#endif
954

    
955
#if CONFIG_MJPEG_DEMUXER
956
AVInputFormat mjpeg_demuxer = {
957
    "mjpeg",
958
    NULL_IF_CONFIG_SMALL("raw MJPEG video"),
959
    0,
960
    NULL,
961
    video_read_header,
962
    ff_raw_read_partial_packet,
963
    .flags= AVFMT_GENERIC_INDEX,
964
    .extensions = "mjpg,mjpeg",
965
    .value = CODEC_ID_MJPEG,
966
};
967
#endif
968

    
969
#if CONFIG_MJPEG_MUXER
970
AVOutputFormat mjpeg_muxer = {
971
    "mjpeg",
972
    NULL_IF_CONFIG_SMALL("raw MJPEG video"),
973
    "video/x-mjpeg",
974
    "mjpg,mjpeg",
975
    0,
976
    CODEC_ID_NONE,
977
    CODEC_ID_MJPEG,
978
    NULL,
979
    ff_raw_write_packet,
980
    .flags= AVFMT_NOTIMESTAMPS,
981
};
982
#endif
983

    
984
#if CONFIG_MLP_DEMUXER
985
AVInputFormat mlp_demuxer = {
986
    "mlp",
987
    NULL_IF_CONFIG_SMALL("raw MLP"),
988
    0,
989
    NULL,
990
    audio_read_header,
991
    ff_raw_read_partial_packet,
992
    .flags= AVFMT_GENERIC_INDEX,
993
    .extensions = "mlp",
994
    .value = CODEC_ID_MLP,
995
};
996
#endif
997

    
998
#if CONFIG_MLP_MUXER
999
AVOutputFormat mlp_muxer = {
1000
    "mlp",
1001
    NULL_IF_CONFIG_SMALL("raw MLP"),
1002
    NULL,
1003
    "mlp",
1004
    0,
1005
    CODEC_ID_MLP,
1006
    CODEC_ID_NONE,
1007
    NULL,
1008
    ff_raw_write_packet,
1009
    .flags= AVFMT_NOTIMESTAMPS,
1010
};
1011
#endif
1012

    
1013
#if CONFIG_SRT_MUXER
1014
AVOutputFormat srt_muxer = {
1015
    .name           = "srt",
1016
    .long_name      = NULL_IF_CONFIG_SMALL("SubRip subtitle format"),
1017
    .mime_type      = "application/x-subrip",
1018
    .extensions     = "srt",
1019
    .write_packet   = ff_raw_write_packet,
1020
    .flags          = AVFMT_NOTIMESTAMPS,
1021
    .subtitle_codec = CODEC_ID_SRT,
1022
};
1023
#endif
1024

    
1025
#if CONFIG_TRUEHD_DEMUXER
1026
AVInputFormat truehd_demuxer = {
1027
    "truehd",
1028
    NULL_IF_CONFIG_SMALL("raw TrueHD"),
1029
    0,
1030
    NULL,
1031
    audio_read_header,
1032
    ff_raw_read_partial_packet,
1033
    .flags= AVFMT_GENERIC_INDEX,
1034
    .extensions = "thd",
1035
    .value = CODEC_ID_TRUEHD,
1036
};
1037
#endif
1038

    
1039
#if CONFIG_TRUEHD_MUXER
1040
AVOutputFormat truehd_muxer = {
1041
    "truehd",
1042
    NULL_IF_CONFIG_SMALL("raw TrueHD"),
1043
    NULL,
1044
    "thd",
1045
    0,
1046
    CODEC_ID_TRUEHD,
1047
    CODEC_ID_NONE,
1048
    NULL,
1049
    ff_raw_write_packet,
1050
    .flags= AVFMT_NOTIMESTAMPS,
1051
};
1052
#endif
1053

    
1054
#if CONFIG_MPEG1VIDEO_MUXER
1055
AVOutputFormat mpeg1video_muxer = {
1056
    "mpeg1video",
1057
    NULL_IF_CONFIG_SMALL("raw MPEG-1 video"),
1058
    "video/x-mpeg",
1059
    "mpg,mpeg,m1v",
1060
    0,
1061
    CODEC_ID_NONE,
1062
    CODEC_ID_MPEG1VIDEO,
1063
    NULL,
1064
    ff_raw_write_packet,
1065
    .flags= AVFMT_NOTIMESTAMPS,
1066
};
1067
#endif
1068

    
1069
#if CONFIG_MPEG2VIDEO_MUXER
1070
AVOutputFormat mpeg2video_muxer = {
1071
    "mpeg2video",
1072
    NULL_IF_CONFIG_SMALL("raw MPEG-2 video"),
1073
    NULL,
1074
    "m2v",
1075
    0,
1076
    CODEC_ID_NONE,
1077
    CODEC_ID_MPEG2VIDEO,
1078
    NULL,
1079
    ff_raw_write_packet,
1080
    .flags= AVFMT_NOTIMESTAMPS,
1081
};
1082
#endif
1083

    
1084
#if CONFIG_MPEGVIDEO_DEMUXER
1085
AVInputFormat mpegvideo_demuxer = {
1086
    "mpegvideo",
1087
    NULL_IF_CONFIG_SMALL("raw MPEG video"),
1088
    0,
1089
    mpegvideo_probe,
1090
    video_read_header,
1091
    ff_raw_read_partial_packet,
1092
    .flags= AVFMT_GENERIC_INDEX,
1093
    .value = CODEC_ID_MPEG1VIDEO,
1094
};
1095
#endif
1096

    
1097
#if CONFIG_CAVSVIDEO_DEMUXER
1098
AVInputFormat cavsvideo_demuxer = {
1099
    "cavsvideo",
1100
    NULL_IF_CONFIG_SMALL("raw Chinese AVS video"),
1101
    0,
1102
    cavsvideo_probe,
1103
    video_read_header,
1104
    ff_raw_read_partial_packet,
1105
    .flags= AVFMT_GENERIC_INDEX,
1106
    .value = CODEC_ID_CAVS,
1107
};
1108
#endif
1109

    
1110
#if CONFIG_NULL_MUXER
1111
AVOutputFormat null_muxer = {
1112
    "null",
1113
    NULL_IF_CONFIG_SMALL("raw null video format"),
1114
    NULL,
1115
    NULL,
1116
    0,
1117
#if HAVE_BIGENDIAN
1118
    CODEC_ID_PCM_S16BE,
1119
#else
1120
    CODEC_ID_PCM_S16LE,
1121
#endif
1122
    CODEC_ID_RAWVIDEO,
1123
    NULL,
1124
    null_write_packet,
1125
    .flags = AVFMT_NOFILE | AVFMT_RAWPICTURE | AVFMT_NOTIMESTAMPS,
1126
};
1127
#endif
1128

    
1129
#if CONFIG_RAWVIDEO_DEMUXER
1130
AVInputFormat rawvideo_demuxer = {
1131
    "rawvideo",
1132
    NULL_IF_CONFIG_SMALL("raw video format"),
1133
    0,
1134
    NULL,
1135
    raw_read_header,
1136
    rawvideo_read_packet,
1137
    .flags= AVFMT_GENERIC_INDEX,
1138
    .extensions = "yuv,cif,qcif,rgb",
1139
    .value = CODEC_ID_RAWVIDEO,
1140
};
1141
#endif
1142

    
1143
#if CONFIG_RAWVIDEO_MUXER
1144
AVOutputFormat rawvideo_muxer = {
1145
    "rawvideo",
1146
    NULL_IF_CONFIG_SMALL("raw video format"),
1147
    NULL,
1148
    "yuv,rgb",
1149
    0,
1150
    CODEC_ID_NONE,
1151
    CODEC_ID_RAWVIDEO,
1152
    NULL,
1153
    ff_raw_write_packet,
1154
    .flags= AVFMT_NOTIMESTAMPS,
1155
};
1156
#endif
1157

    
1158
#if CONFIG_SHORTEN_DEMUXER
1159
AVInputFormat shorten_demuxer = {
1160
    "shn",
1161
    NULL_IF_CONFIG_SMALL("raw Shorten"),
1162
    0,
1163
    NULL,
1164
    audio_read_header,
1165
    ff_raw_read_partial_packet,
1166
    .flags= AVFMT_GENERIC_INDEX,
1167
    .extensions = "shn",
1168
    .value = CODEC_ID_SHORTEN,
1169
};
1170
#endif
1171

    
1172
#if CONFIG_VC1_DEMUXER
1173
AVInputFormat vc1_demuxer = {
1174
    "vc1",
1175
    NULL_IF_CONFIG_SMALL("raw VC-1"),
1176
    0,
1177
    NULL /* vc1_probe */,
1178
    video_read_header,
1179
    ff_raw_read_partial_packet,
1180
    .extensions = "vc1",
1181
    .value = CODEC_ID_VC1,
1182
};
1183
#endif
1184

    
1185
/* PCM formats */
1186

    
1187
#define PCMINPUTDEF(name, long_name, ext, codec) \
1188
AVInputFormat pcm_ ## name ## _demuxer = {\
1189
    #name,\
1190
    NULL_IF_CONFIG_SMALL(long_name),\
1191
    0,\
1192
    NULL,\
1193
    raw_read_header,\
1194
    raw_read_packet,\
1195
    NULL,\
1196
    pcm_read_seek,\
1197
    .flags= AVFMT_GENERIC_INDEX,\
1198
    .extensions = ext,\
1199
    .value = codec,\
1200
};
1201

    
1202
#define PCMOUTPUTDEF(name, long_name, ext, codec) \
1203
AVOutputFormat pcm_ ## name ## _muxer = {\
1204
    #name,\
1205
    NULL_IF_CONFIG_SMALL(long_name),\
1206
    NULL,\
1207
    ext,\
1208
    0,\
1209
    codec,\
1210
    CODEC_ID_NONE,\
1211
    NULL,\
1212
    ff_raw_write_packet,\
1213
    .flags= AVFMT_NOTIMESTAMPS,\
1214
};
1215

    
1216

    
1217
#if  !CONFIG_MUXERS && CONFIG_DEMUXERS
1218
#define PCMDEF(name, long_name, ext, codec) \
1219
        PCMINPUTDEF(name, long_name, ext, codec)
1220
#elif CONFIG_MUXERS && !CONFIG_DEMUXERS
1221
#define PCMDEF(name, long_name, ext, codec) \
1222
        PCMOUTPUTDEF(name, long_name, ext, codec)
1223
#elif CONFIG_MUXERS && CONFIG_DEMUXERS
1224
#define PCMDEF(name, long_name, ext, codec) \
1225
        PCMINPUTDEF(name, long_name, ext, codec)\
1226
        PCMOUTPUTDEF(name, long_name, ext, codec)
1227
#else
1228
#define PCMDEF(name, long_name, ext, codec)
1229
#endif
1230

    
1231
#if HAVE_BIGENDIAN
1232
#define BE_DEF(s) s
1233
#define LE_DEF(s) NULL
1234
#else
1235
#define BE_DEF(s) NULL
1236
#define LE_DEF(s) s
1237
#endif
1238

    
1239
PCMDEF(f64be, "PCM 64 bit floating-point big-endian format",
1240
       NULL, CODEC_ID_PCM_F64BE)
1241

    
1242
PCMDEF(f64le, "PCM 64 bit floating-point little-endian format",
1243
       NULL, CODEC_ID_PCM_F64LE)
1244

    
1245
PCMDEF(f32be, "PCM 32 bit floating-point big-endian format",
1246
       NULL, CODEC_ID_PCM_F32BE)
1247

    
1248
PCMDEF(f32le, "PCM 32 bit floating-point little-endian format",
1249
       NULL, CODEC_ID_PCM_F32LE)
1250

    
1251
PCMDEF(s32be, "PCM signed 32 bit big-endian format",
1252
       NULL, CODEC_ID_PCM_S32BE)
1253

    
1254
PCMDEF(s32le, "PCM signed 32 bit little-endian format",
1255
       NULL, CODEC_ID_PCM_S32LE)
1256

    
1257
PCMDEF(s24be, "PCM signed 24 bit big-endian format",
1258
       NULL, CODEC_ID_PCM_S24BE)
1259

    
1260
PCMDEF(s24le, "PCM signed 24 bit little-endian format",
1261
       NULL, CODEC_ID_PCM_S24LE)
1262

    
1263
PCMDEF(s16be, "PCM signed 16 bit big-endian format",
1264
       BE_DEF("sw"), CODEC_ID_PCM_S16BE)
1265

    
1266
PCMDEF(s16le, "PCM signed 16 bit little-endian format",
1267
       LE_DEF("sw"), CODEC_ID_PCM_S16LE)
1268

    
1269
PCMDEF(s8, "PCM signed 8 bit format",
1270
       "sb", CODEC_ID_PCM_S8)
1271

    
1272
PCMDEF(u32be, "PCM unsigned 32 bit big-endian format",
1273
       NULL, CODEC_ID_PCM_U32BE)
1274

    
1275
PCMDEF(u32le, "PCM unsigned 32 bit little-endian format",
1276
       NULL, CODEC_ID_PCM_U32LE)
1277

    
1278
PCMDEF(u24be, "PCM unsigned 24 bit big-endian format",
1279
       NULL, CODEC_ID_PCM_U24BE)
1280

    
1281
PCMDEF(u24le, "PCM unsigned 24 bit little-endian format",
1282
       NULL, CODEC_ID_PCM_U24LE)
1283

    
1284
PCMDEF(u16be, "PCM unsigned 16 bit big-endian format",
1285
       BE_DEF("uw"), CODEC_ID_PCM_U16BE)
1286

    
1287
PCMDEF(u16le, "PCM unsigned 16 bit little-endian format",
1288
       LE_DEF("uw"), CODEC_ID_PCM_U16LE)
1289

    
1290
PCMDEF(u8, "PCM unsigned 8 bit format",
1291
       "ub", CODEC_ID_PCM_U8)
1292

    
1293
PCMDEF(alaw, "PCM A-law format",
1294
       "al", CODEC_ID_PCM_ALAW)
1295

    
1296
PCMDEF(mulaw, "PCM mu-law format",
1297
       "ul", CODEC_ID_PCM_MULAW)