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1 115329f1 Diego Biurrun
/*
2 de6d9b64 Fabrice Bellard
 * WAV encoder and decoder
3 e095026a Fabrice Bellard
 * Copyright (c) 2001, 2002 Fabrice Bellard.
4 de6d9b64 Fabrice Bellard
 *
5 19720f15 Fabrice Bellard
 * This library is free software; you can redistribute it and/or
6
 * modify it under the terms of the GNU Lesser General Public
7
 * License as published by the Free Software Foundation; either
8
 * version 2 of the License, or (at your option) any later version.
9 de6d9b64 Fabrice Bellard
 *
10 19720f15 Fabrice Bellard
 * This library is distributed in the hope that it will be useful,
11 de6d9b64 Fabrice Bellard
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 19720f15 Fabrice Bellard
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13
 * Lesser General Public License for more details.
14 de6d9b64 Fabrice Bellard
 *
15 19720f15 Fabrice Bellard
 * You should have received a copy of the GNU Lesser General Public
16
 * License along with this library; if not, write to the Free Software
17 5509bffa Diego Biurrun
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 de6d9b64 Fabrice Bellard
 */
19
#include "avformat.h"
20
#include "avi.h"
21
22 e8c00089 Zdenek Kabelac
const CodecTag codec_wav_tags[] = {
23 46a3d068 Fabrice Bellard
    { CODEC_ID_MP2, 0x50 },
24 80783dc2 Fabrice Bellard
    { CODEC_ID_MP3, 0x55 },
25 46a3d068 Fabrice Bellard
    { CODEC_ID_AC3, 0x2000 },
26 1fd7ec44 Corey Hickey
    { CODEC_ID_DTS, 0x2001 },
27 46a3d068 Fabrice Bellard
    { CODEC_ID_PCM_S16LE, 0x01 },
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    { CODEC_ID_PCM_U8, 0x01 }, /* must come after s16le in this list */
29 b461b3bc Reimar Döffinger
    { CODEC_ID_PCM_S24LE, 0x01 },
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    { CODEC_ID_PCM_S32LE, 0x01 },
31 46a3d068 Fabrice Bellard
    { CODEC_ID_PCM_ALAW, 0x06 },
32
    { CODEC_ID_PCM_MULAW, 0x07 },
33 0147f198 François Revol
    { CODEC_ID_ADPCM_MS, 0x02 },
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    { CODEC_ID_ADPCM_IMA_WAV, 0x11 },
35 694eaead Vidar Madsen
    { CODEC_ID_ADPCM_YAMAHA, 0x20 },
36 e5966052 Roman Shaposhnik
    { CODEC_ID_ADPCM_G726, 0x45 },
37 048446bf Mike Melanson
    { CODEC_ID_ADPCM_IMA_DK4, 0x61 },  /* rogue format number */
38
    { CODEC_ID_ADPCM_IMA_DK3, 0x62 },  /* rogue format number */
39 e095026a Fabrice Bellard
    { CODEC_ID_WMAV1, 0x160 },
40
    { CODEC_ID_WMAV2, 0x161 },
41 ca377212 Måns Rullgård
    { CODEC_ID_AAC, 0x706d },
42 2926db54 Michael Niedermayer
    { CODEC_ID_VORBIS, ('V'<<8)+'o' }, //HACK/FIXME, does vorbis in WAV/AVI have an (in)official id?
43 7251dfaf Alex Beregszaszi
    { CODEC_ID_SONIC, 0x2048 },
44
    { CODEC_ID_SONIC_LS, 0x2048 },
45 b3bfb299 Mike Melanson
    { CODEC_ID_ADPCM_CT, 0x200 },
46 a50ff23c Alex Beregszaszi
    { CODEC_ID_ADPCM_SWF, ('S'<<8)+'F' },
47 bf3027c8 Diego Biurrun
    { CODEC_ID_TRUESPEECH, 0x22 },
48 46a3d068 Fabrice Bellard
    { 0, 0 },
49
};
50
51 a9e35095 Diego Biurrun
#ifdef CONFIG_MUXERS
52 46a3d068 Fabrice Bellard
/* WAVEFORMATEX header */
53 afc25d93 Philip Gladstone
/* returns the size or -1 on error */
54 46a3d068 Fabrice Bellard
int put_wav_header(ByteIOContext *pb, AVCodecContext *enc)
55
{
56 bd5a6020 Michael Niedermayer
    int bps, blkalign, bytespersec;
57 afc25d93 Philip Gladstone
    int hdrsize = 18;
58 46a3d068 Fabrice Bellard
59 bd5a6020 Michael Niedermayer
    if(!enc->codec_tag)
60
       enc->codec_tag = codec_get_tag(codec_wav_tags, enc->codec_id);
61
    if(!enc->codec_tag)
62 46a3d068 Fabrice Bellard
        return -1;
63 bd5a6020 Michael Niedermayer
64
    put_le16(pb, enc->codec_tag);
65 46a3d068 Fabrice Bellard
    put_le16(pb, enc->channels);
66
    put_le32(pb, enc->sample_rate);
67
    if (enc->codec_id == CODEC_ID_PCM_U8 ||
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        enc->codec_id == CODEC_ID_PCM_ALAW ||
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        enc->codec_id == CODEC_ID_PCM_MULAW) {
70
        bps = 8;
71 80783dc2 Fabrice Bellard
    } else if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3) {
72 86bec9a1 Juanjo
        bps = 0;
73 694eaead Vidar Madsen
    } else if (enc->codec_id == CODEC_ID_ADPCM_IMA_WAV || enc->codec_id == CODEC_ID_ADPCM_MS || enc->codec_id == CODEC_ID_ADPCM_G726 || enc->codec_id == CODEC_ID_ADPCM_YAMAHA) { //
74 889c5224 François Revol
        bps = 4;
75 b461b3bc Reimar Döffinger
    } else if (enc->codec_id == CODEC_ID_PCM_S24LE) {
76
        bps = 24;
77
    } else if (enc->codec_id == CODEC_ID_PCM_S32LE) {
78
        bps = 32;
79 46a3d068 Fabrice Bellard
    } else {
80
        bps = 16;
81
    }
82 115329f1 Diego Biurrun
83 80783dc2 Fabrice Bellard
    if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3) {
84 359fa0fe Michael Niedermayer
        blkalign = enc->frame_size; //this is wrong, but seems many demuxers dont work if this is set correctly
85 4b1f4f23 Juanjo
        //blkalign = 144 * enc->bit_rate/enc->sample_rate;
86 58d2a150 Calcium
    } else if (enc->codec_id == CODEC_ID_ADPCM_G726) { //
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        blkalign = 1;
88 0147f198 François Revol
    } else if (enc->block_align != 0) { /* specified by the codec */
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        blkalign = enc->block_align;
90 4b1f4f23 Juanjo
    } else
91 86bec9a1 Juanjo
        blkalign = enc->channels*bps >> 3;
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    if (enc->codec_id == CODEC_ID_PCM_U8 ||
93 b461b3bc Reimar Döffinger
        enc->codec_id == CODEC_ID_PCM_S24LE ||
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        enc->codec_id == CODEC_ID_PCM_S32LE ||
95 86bec9a1 Juanjo
        enc->codec_id == CODEC_ID_PCM_S16LE) {
96
        bytespersec = enc->sample_rate * blkalign;
97
    } else {
98
        bytespersec = enc->bit_rate / 8;
99
    }
100
    put_le32(pb, bytespersec); /* bytes per second */
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    put_le16(pb, blkalign); /* block align */
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    put_le16(pb, bps); /* bits per sample */
103 80783dc2 Fabrice Bellard
    if (enc->codec_id == CODEC_ID_MP3) {
104 86bec9a1 Juanjo
        put_le16(pb, 12); /* wav_extra_size */
105 afc25d93 Philip Gladstone
        hdrsize += 12;
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        put_le16(pb, 1); /* wID */
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        put_le32(pb, 2); /* fdwFlags */
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        put_le16(pb, 1152); /* nBlockSize */
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        put_le16(pb, 1); /* nFramesPerBlock */
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        put_le16(pb, 1393); /* nCodecDelay */
111 4b1f4f23 Juanjo
    } else if (enc->codec_id == CODEC_ID_MP2) {
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        put_le16(pb, 22); /* wav_extra_size */
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        hdrsize += 22;
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        put_le16(pb, 2);  /* fwHeadLayer */
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        put_le32(pb, enc->bit_rate); /* dwHeadBitrate */
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        put_le16(pb, enc->channels == 2 ? 1 : 8); /* fwHeadMode */
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        put_le16(pb, 0);  /* fwHeadModeExt */
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        put_le16(pb, 1);  /* wHeadEmphasis */
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        put_le16(pb, 16); /* fwHeadFlags */
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        put_le32(pb, 0);  /* dwPTSLow */
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        put_le32(pb, 0);  /* dwPTSHigh */
122 889c5224 François Revol
    } else if (enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
123
        put_le16(pb, 2); /* wav_extra_size */
124 361b1b86 Brian Becker
        hdrsize += 2;
125 889c5224 François Revol
        put_le16(pb, ((enc->block_align - 4 * enc->channels) / (4 * enc->channels)) * 8 + 1); /* wSamplesPerBlock */
126 c4f8d5d9 Michael Niedermayer
    } else if(enc->extradata_size){
127 6748046e Michael Niedermayer
        put_le16(pb, enc->extradata_size);
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        put_buffer(pb, enc->extradata, enc->extradata_size);
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        hdrsize += enc->extradata_size;
130 5062c202 Michael Niedermayer
        if(hdrsize&1){
131
            hdrsize++;
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            put_byte(pb, 0);
133
        }
134 c4f8d5d9 Michael Niedermayer
    } else {
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        hdrsize -= 2;
136 6748046e Michael Niedermayer
    }
137 86bec9a1 Juanjo
138 afc25d93 Philip Gladstone
    return hdrsize;
139 46a3d068 Fabrice Bellard
}
140 a9e35095 Diego Biurrun
#endif //CONFIG_MUXERS
141 46a3d068 Fabrice Bellard
142 2e7973bb Roman Shaposhnik
/* We could be given one of the three possible structures here:
143
 * WAVEFORMAT, PCMWAVEFORMAT or WAVEFORMATEX. Each structure
144
 * is an expansion of the previous one with the fields added
145
 * at the bottom. PCMWAVEFORMAT adds 'WORD wBitsPerSample' and
146
 * WAVEFORMATEX adds 'WORD  cbSize' and basically makes itself
147
 * an openended structure.
148
 */
149 115329f1 Diego Biurrun
void get_wav_header(ByteIOContext *pb, AVCodecContext *codec, int size)
150 e095026a Fabrice Bellard
{
151 e8c00089 Zdenek Kabelac
    int id;
152 e095026a Fabrice Bellard
153
    id = get_le16(pb);
154
    codec->codec_type = CODEC_TYPE_AUDIO;
155
    codec->codec_tag = id;
156
    codec->channels = get_le16(pb);
157
    codec->sample_rate = get_le32(pb);
158
    codec->bit_rate = get_le32(pb) * 8;
159
    codec->block_align = get_le16(pb);
160 2e7973bb Roman Shaposhnik
    if (size == 14) {  /* We're dealing with plain vanilla WAVEFORMAT */
161
        codec->bits_per_sample = 8;
162 e0ece99a Michael Niedermayer
    }else
163
        codec->bits_per_sample = get_le16(pb);
164
    codec->codec_id = wav_codec_get_id(id, codec->bits_per_sample);
165 115329f1 Diego Biurrun
166 2e7973bb Roman Shaposhnik
    if (size > 16) {  /* We're obviously dealing with WAVEFORMATEX */
167 bb270c08 Diego Biurrun
        codec->extradata_size = get_le16(pb);
168
        if (codec->extradata_size > 0) {
169
            if (codec->extradata_size > size - 18)
170
                codec->extradata_size = size - 18;
171 3129cd01 Michael Niedermayer
            codec->extradata = av_mallocz(codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
172 cb146faf Zdenek Kabelac
            get_buffer(pb, codec->extradata, codec->extradata_size);
173 2e7973bb Roman Shaposhnik
        } else
174 bb270c08 Diego Biurrun
            codec->extradata_size = 0;
175 115329f1 Diego Biurrun
176 bb270c08 Diego Biurrun
        /* It is possible for the chunk to contain garbage at the end */
177
        if (size - codec->extradata_size - 18 > 0)
178
            url_fskip(pb, size - codec->extradata_size - 18);
179 e095026a Fabrice Bellard
    }
180
}
181
182
183 46a3d068 Fabrice Bellard
int wav_codec_get_id(unsigned int tag, int bps)
184
{
185
    int id;
186
    id = codec_get_id(codec_wav_tags, tag);
187
    if (id <= 0)
188
        return id;
189
    /* handle specific u8 codec */
190
    if (id == CODEC_ID_PCM_S16LE && bps == 8)
191
        id = CODEC_ID_PCM_U8;
192 b461b3bc Reimar Döffinger
    if (id == CODEC_ID_PCM_S16LE && bps == 24)
193
        id = CODEC_ID_PCM_S24LE;
194
    if (id == CODEC_ID_PCM_S16LE && bps == 32)
195
        id = CODEC_ID_PCM_S32LE;
196 46a3d068 Fabrice Bellard
    return id;
197
}
198
199 a9e35095 Diego Biurrun
#ifdef CONFIG_MUXERS
200 de6d9b64 Fabrice Bellard
typedef struct {
201
    offset_t data;
202
} WAVContext;
203
204
static int wav_write_header(AVFormatContext *s)
205
{
206 c9a65ca8 Fabrice Bellard
    WAVContext *wav = s->priv_data;
207 de6d9b64 Fabrice Bellard
    ByteIOContext *pb = &s->pb;
208
    offset_t fmt;
209
210
    put_tag(pb, "RIFF");
211
    put_le32(pb, 0); /* file length */
212
    put_tag(pb, "WAVE");
213
214
    /* format header */
215
    fmt = start_tag(pb, "fmt ");
216 01f4895c Michael Niedermayer
    if (put_wav_header(pb, s->streams[0]->codec) < 0) {
217 1ea4f593 Fabrice Bellard
        av_free(wav);
218 46a3d068 Fabrice Bellard
        return -1;
219
    }
220 de6d9b64 Fabrice Bellard
    end_tag(pb, fmt);
221
222 01f4895c Michael Niedermayer
    av_set_pts_info(s->streams[0], 64, 1, s->streams[0]->codec->sample_rate);
223 a1e568bd Michael Niedermayer
224 de6d9b64 Fabrice Bellard
    /* data header */
225
    wav->data = start_tag(pb, "data");
226 115329f1 Diego Biurrun
227 de6d9b64 Fabrice Bellard
    put_flush_packet(pb);
228
229
    return 0;
230
}
231
232 e928649b Michael Niedermayer
static int wav_write_packet(AVFormatContext *s, AVPacket *pkt)
233 de6d9b64 Fabrice Bellard
{
234
    ByteIOContext *pb = &s->pb;
235 e928649b Michael Niedermayer
    put_buffer(pb, pkt->data, pkt->size);
236 de6d9b64 Fabrice Bellard
    return 0;
237
}
238
239
static int wav_write_trailer(AVFormatContext *s)
240
{
241
    ByteIOContext *pb = &s->pb;
242
    WAVContext *wav = s->priv_data;
243
    offset_t file_size;
244
245
    if (!url_is_streamed(&s->pb)) {
246
        end_tag(pb, wav->data);
247
248
        /* update file size */
249
        file_size = url_ftell(pb);
250
        url_fseek(pb, 4, SEEK_SET);
251 0c1a9eda Zdenek Kabelac
        put_le32(pb, (uint32_t)(file_size - 8));
252 de6d9b64 Fabrice Bellard
        url_fseek(pb, file_size, SEEK_SET);
253
254
        put_flush_packet(pb);
255
    }
256
    return 0;
257
}
258 a9e35095 Diego Biurrun
#endif //CONFIG_MUXERS
259 de6d9b64 Fabrice Bellard
260
/* return the size of the found tag */
261
/* XXX: > 2GB ? */
262 0c1a9eda Zdenek Kabelac
static int find_tag(ByteIOContext *pb, uint32_t tag1)
263 de6d9b64 Fabrice Bellard
{
264
    unsigned int tag;
265
    int size;
266
267
    for(;;) {
268
        if (url_feof(pb))
269
            return -1;
270
        tag = get_le32(pb);
271
        size = get_le32(pb);
272
        if (tag == tag1)
273
            break;
274
        url_fseek(pb, size, SEEK_CUR);
275
    }
276
    if (size < 0)
277
        size = 0x7fffffff;
278
    return size;
279
}
280
281 c9a65ca8 Fabrice Bellard
static int wav_probe(AVProbeData *p)
282
{
283
    /* check file header */
284
    if (p->buf_size <= 32)
285
        return 0;
286
    if (p->buf[0] == 'R' && p->buf[1] == 'I' &&
287
        p->buf[2] == 'F' && p->buf[3] == 'F' &&
288
        p->buf[8] == 'W' && p->buf[9] == 'A' &&
289
        p->buf[10] == 'V' && p->buf[11] == 'E')
290
        return AVPROBE_SCORE_MAX;
291
    else
292
        return 0;
293
}
294
295 de6d9b64 Fabrice Bellard
/* wav input */
296
static int wav_read_header(AVFormatContext *s,
297
                           AVFormatParameters *ap)
298
{
299
    int size;
300
    unsigned int tag;
301
    ByteIOContext *pb = &s->pb;
302
    AVStream *st;
303
304
    /* check RIFF header */
305
    tag = get_le32(pb);
306
307
    if (tag != MKTAG('R', 'I', 'F', 'F'))
308
        return -1;
309
    get_le32(pb); /* file size */
310
    tag = get_le32(pb);
311
    if (tag != MKTAG('W', 'A', 'V', 'E'))
312
        return -1;
313 115329f1 Diego Biurrun
314 de6d9b64 Fabrice Bellard
    /* parse fmt header */
315
    size = find_tag(pb, MKTAG('f', 'm', 't', ' '));
316
    if (size < 0)
317
        return -1;
318 c9a65ca8 Fabrice Bellard
    st = av_new_stream(s, 0);
319 de6d9b64 Fabrice Bellard
    if (!st)
320 c9a65ca8 Fabrice Bellard
        return AVERROR_NOMEM;
321 de6d9b64 Fabrice Bellard
322 01f4895c Michael Niedermayer
    get_wav_header(pb, st->codec, size);
323 f9b5459e Fabrice Bellard
    st->need_parsing = 1;
324 595bf4ef Michael Niedermayer
325 01f4895c Michael Niedermayer
    av_set_pts_info(st, 64, 1, st->codec->sample_rate);
326 595bf4ef Michael Niedermayer
327 e095026a Fabrice Bellard
    size = find_tag(pb, MKTAG('d', 'a', 't', 'a'));
328
    if (size < 0)
329
        return -1;
330 de6d9b64 Fabrice Bellard
    return 0;
331
}
332
333
#define MAX_SIZE 4096
334
335
static int wav_read_packet(AVFormatContext *s,
336
                           AVPacket *pkt)
337
{
338 f9b5459e Fabrice Bellard
    int ret, size;
339
    AVStream *st;
340 de6d9b64 Fabrice Bellard
341
    if (url_feof(&s->pb))
342 0bd586c5 Mike Melanson
        return AVERROR_IO;
343 f9b5459e Fabrice Bellard
    st = s->streams[0];
344
345
    size = MAX_SIZE;
346 01f4895c Michael Niedermayer
    if (st->codec->block_align > 1) {
347
        if (size < st->codec->block_align)
348
            size = st->codec->block_align;
349
        size = (size / st->codec->block_align) * st->codec->block_align;
350 f9b5459e Fabrice Bellard
    }
351
    if (av_new_packet(pkt, size))
352 0bd586c5 Mike Melanson
        return AVERROR_IO;
353 de6d9b64 Fabrice Bellard
    pkt->stream_index = 0;
354
355
    ret = get_buffer(&s->pb, pkt->data, pkt->size);
356
    if (ret < 0)
357
        av_free_packet(pkt);
358 5ed8fafc Fabrice Bellard
    /* note: we need to modify the packet size here to handle the last
359
       packet */
360
    pkt->size = ret;
361 de6d9b64 Fabrice Bellard
    return ret;
362
}
363
364
static int wav_read_close(AVFormatContext *s)
365
{
366
    return 0;
367
}
368
369 115329f1 Diego Biurrun
static int wav_read_seek(AVFormatContext *s,
370 7b3c1382 Michael Niedermayer
                         int stream_index, int64_t timestamp, int flags)
371 f9b5459e Fabrice Bellard
{
372
    AVStream *st;
373
374
    st = s->streams[0];
375 01f4895c Michael Niedermayer
    switch(st->codec->codec_id) {
376 f9b5459e Fabrice Bellard
    case CODEC_ID_MP2:
377
    case CODEC_ID_MP3:
378
    case CODEC_ID_AC3:
379 23c99253 Michael Niedermayer
    case CODEC_ID_DTS:
380 f9b5459e Fabrice Bellard
        /* use generic seeking with dynamically generated indexes */
381
        return -1;
382
    default:
383
        break;
384
    }
385 7b3c1382 Michael Niedermayer
    return pcm_read_seek(s, stream_index, timestamp, flags);
386 f9b5459e Fabrice Bellard
}
387
388
389 c9a65ca8 Fabrice Bellard
static AVInputFormat wav_iformat = {
390
    "wav",
391
    "wav format",
392
    0,
393
    wav_probe,
394
    wav_read_header,
395
    wav_read_packet,
396
    wav_read_close,
397 f9b5459e Fabrice Bellard
    wav_read_seek,
398 c9a65ca8 Fabrice Bellard
};
399
400 a9e35095 Diego Biurrun
#ifdef CONFIG_MUXERS
401 c9a65ca8 Fabrice Bellard
static AVOutputFormat wav_oformat = {
402 de6d9b64 Fabrice Bellard
    "wav",
403
    "wav format",
404
    "audio/x-wav",
405
    "wav",
406 c9a65ca8 Fabrice Bellard
    sizeof(WAVContext),
407 5ed8fafc Fabrice Bellard
    CODEC_ID_PCM_S16LE,
408 de6d9b64 Fabrice Bellard
    CODEC_ID_NONE,
409
    wav_write_header,
410
    wav_write_packet,
411
    wav_write_trailer,
412
};
413 a9e35095 Diego Biurrun
#endif //CONFIG_MUXERS
414 c9a65ca8 Fabrice Bellard
415 c3775e54 Ronald S. Bultje
int ff_wav_init(void)
416 c9a65ca8 Fabrice Bellard
{
417
    av_register_input_format(&wav_iformat);
418 a9e35095 Diego Biurrun
#ifdef CONFIG_MUXERS
419 c9a65ca8 Fabrice Bellard
    av_register_output_format(&wav_oformat);
420 a9e35095 Diego Biurrun
#endif //CONFIG_MUXERS
421 c9a65ca8 Fabrice Bellard
    return 0;
422
}