NuppelVideo/MythTVVideo support, including rtjpeg decoder
[libav.git] / libavformat / wav.c
CommitLineData
115329f1 1/*
de6d9b64 2 * WAV encoder and decoder
e095026a 3 * Copyright (c) 2001, 2002 Fabrice Bellard.
de6d9b64 4 *
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5 * 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.
de6d9b64 9 *
19720f15 10 * This library is distributed in the hope that it will be useful,
de6d9b64 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
de6d9b64 14 *
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15 * 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
5509bffa 17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
de6d9b64 18 */
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19#include "avformat.h"
20#include "avi.h"
21
e8c00089 22const CodecTag codec_wav_tags[] = {
46a3d068 23 { CODEC_ID_MP2, 0x50 },
80783dc2 24 { CODEC_ID_MP3, 0x55 },
46a3d068 25 { CODEC_ID_AC3, 0x2000 },
1fd7ec44 26 { CODEC_ID_DTS, 0x2001 },
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27 { CODEC_ID_PCM_S16LE, 0x01 },
28 { CODEC_ID_PCM_U8, 0x01 }, /* must come after s16le in this list */
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29 { CODEC_ID_PCM_S24LE, 0x01 },
30 { CODEC_ID_PCM_S32LE, 0x01 },
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31 { CODEC_ID_PCM_ALAW, 0x06 },
32 { CODEC_ID_PCM_MULAW, 0x07 },
0147f198
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33 { CODEC_ID_ADPCM_MS, 0x02 },
34 { CODEC_ID_ADPCM_IMA_WAV, 0x11 },
694eaead 35 { CODEC_ID_ADPCM_YAMAHA, 0x20 },
e5966052 36 { CODEC_ID_ADPCM_G726, 0x45 },
048446bf
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37 { CODEC_ID_ADPCM_IMA_DK4, 0x61 }, /* rogue format number */
38 { CODEC_ID_ADPCM_IMA_DK3, 0x62 }, /* rogue format number */
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39 { CODEC_ID_WMAV1, 0x160 },
40 { CODEC_ID_WMAV2, 0x161 },
ca377212 41 { CODEC_ID_AAC, 0x706d },
2926db54 42 { CODEC_ID_VORBIS, ('V'<<8)+'o' }, //HACK/FIXME, does vorbis in WAV/AVI have an (in)official id?
7251dfaf
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43 { CODEC_ID_SONIC, 0x2048 },
44 { CODEC_ID_SONIC_LS, 0x2048 },
b3bfb299 45 { CODEC_ID_ADPCM_CT, 0x200 },
a50ff23c 46 { CODEC_ID_ADPCM_SWF, ('S'<<8)+'F' },
bf3027c8 47 { CODEC_ID_TRUESPEECH, 0x22 },
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48
49 // for NuppelVideo (nuv.c)
50 { CODEC_ID_PCM_S16LE, MKTAG('R', 'A', 'W', 'A') },
51 { CODEC_ID_MP3, MKTAG('L', 'A', 'M', 'E') },
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52 { 0, 0 },
53};
54
a9e35095 55#ifdef CONFIG_MUXERS
46a3d068 56/* WAVEFORMATEX header */
afc25d93 57/* returns the size or -1 on error */
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58int put_wav_header(ByteIOContext *pb, AVCodecContext *enc)
59{
bd5a6020 60 int bps, blkalign, bytespersec;
afc25d93 61 int hdrsize = 18;
46a3d068 62
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63 if(!enc->codec_tag)
64 enc->codec_tag = codec_get_tag(codec_wav_tags, enc->codec_id);
65 if(!enc->codec_tag)
46a3d068 66 return -1;
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67
68 put_le16(pb, enc->codec_tag);
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69 put_le16(pb, enc->channels);
70 put_le32(pb, enc->sample_rate);
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71 if (enc->codec_id == CODEC_ID_PCM_U8 ||
72 enc->codec_id == CODEC_ID_PCM_ALAW ||
73 enc->codec_id == CODEC_ID_PCM_MULAW) {
74 bps = 8;
80783dc2 75 } else if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3) {
86bec9a1 76 bps = 0;
694eaead 77 } 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) { //
889c5224 78 bps = 4;
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79 } else if (enc->codec_id == CODEC_ID_PCM_S24LE) {
80 bps = 24;
81 } else if (enc->codec_id == CODEC_ID_PCM_S32LE) {
82 bps = 32;
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83 } else {
84 bps = 16;
85 }
115329f1 86
80783dc2 87 if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3) {
359fa0fe 88 blkalign = enc->frame_size; //this is wrong, but seems many demuxers dont work if this is set correctly
4b1f4f23 89 //blkalign = 144 * enc->bit_rate/enc->sample_rate;
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90 } else if (enc->codec_id == CODEC_ID_ADPCM_G726) { //
91 blkalign = 1;
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92 } else if (enc->block_align != 0) { /* specified by the codec */
93 blkalign = enc->block_align;
4b1f4f23 94 } else
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95 blkalign = enc->channels*bps >> 3;
96 if (enc->codec_id == CODEC_ID_PCM_U8 ||
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97 enc->codec_id == CODEC_ID_PCM_S24LE ||
98 enc->codec_id == CODEC_ID_PCM_S32LE ||
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99 enc->codec_id == CODEC_ID_PCM_S16LE) {
100 bytespersec = enc->sample_rate * blkalign;
101 } else {
102 bytespersec = enc->bit_rate / 8;
103 }
104 put_le32(pb, bytespersec); /* bytes per second */
105 put_le16(pb, blkalign); /* block align */
106 put_le16(pb, bps); /* bits per sample */
80783dc2 107 if (enc->codec_id == CODEC_ID_MP3) {
86bec9a1 108 put_le16(pb, 12); /* wav_extra_size */
afc25d93 109 hdrsize += 12;
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110 put_le16(pb, 1); /* wID */
111 put_le32(pb, 2); /* fdwFlags */
112 put_le16(pb, 1152); /* nBlockSize */
113 put_le16(pb, 1); /* nFramesPerBlock */
114 put_le16(pb, 1393); /* nCodecDelay */
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115 } else if (enc->codec_id == CODEC_ID_MP2) {
116 put_le16(pb, 22); /* wav_extra_size */
afc25d93 117 hdrsize += 22;
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118 put_le16(pb, 2); /* fwHeadLayer */
119 put_le32(pb, enc->bit_rate); /* dwHeadBitrate */
120 put_le16(pb, enc->channels == 2 ? 1 : 8); /* fwHeadMode */
121 put_le16(pb, 0); /* fwHeadModeExt */
122 put_le16(pb, 1); /* wHeadEmphasis */
123 put_le16(pb, 16); /* fwHeadFlags */
124 put_le32(pb, 0); /* dwPTSLow */
125 put_le32(pb, 0); /* dwPTSHigh */
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126 } else if (enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
127 put_le16(pb, 2); /* wav_extra_size */
361b1b86 128 hdrsize += 2;
889c5224 129 put_le16(pb, ((enc->block_align - 4 * enc->channels) / (4 * enc->channels)) * 8 + 1); /* wSamplesPerBlock */
c4f8d5d9 130 } else if(enc->extradata_size){
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131 put_le16(pb, enc->extradata_size);
132 put_buffer(pb, enc->extradata, enc->extradata_size);
133 hdrsize += enc->extradata_size;
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134 if(hdrsize&1){
135 hdrsize++;
136 put_byte(pb, 0);
137 }
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138 } else {
139 hdrsize -= 2;
6748046e 140 }
86bec9a1 141
afc25d93 142 return hdrsize;
46a3d068 143}
a9e35095 144#endif //CONFIG_MUXERS
46a3d068 145
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146/* We could be given one of the three possible structures here:
147 * WAVEFORMAT, PCMWAVEFORMAT or WAVEFORMATEX. Each structure
148 * is an expansion of the previous one with the fields added
149 * at the bottom. PCMWAVEFORMAT adds 'WORD wBitsPerSample' and
150 * WAVEFORMATEX adds 'WORD cbSize' and basically makes itself
151 * an openended structure.
152 */
115329f1 153void get_wav_header(ByteIOContext *pb, AVCodecContext *codec, int size)
e095026a 154{
e8c00089 155 int id;
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156
157 id = get_le16(pb);
158 codec->codec_type = CODEC_TYPE_AUDIO;
159 codec->codec_tag = id;
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160 codec->channels = get_le16(pb);
161 codec->sample_rate = get_le32(pb);
162 codec->bit_rate = get_le32(pb) * 8;
163 codec->block_align = get_le16(pb);
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164 if (size == 14) { /* We're dealing with plain vanilla WAVEFORMAT */
165 codec->bits_per_sample = 8;
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166 }else
167 codec->bits_per_sample = get_le16(pb);
168 codec->codec_id = wav_codec_get_id(id, codec->bits_per_sample);
115329f1 169
2e7973bb 170 if (size > 16) { /* We're obviously dealing with WAVEFORMATEX */
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DB
171 codec->extradata_size = get_le16(pb);
172 if (codec->extradata_size > 0) {
173 if (codec->extradata_size > size - 18)
174 codec->extradata_size = size - 18;
3129cd01 175 codec->extradata = av_mallocz(codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
cb146faf 176 get_buffer(pb, codec->extradata, codec->extradata_size);
2e7973bb 177 } else
bb270c08 178 codec->extradata_size = 0;
115329f1 179
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180 /* It is possible for the chunk to contain garbage at the end */
181 if (size - codec->extradata_size - 18 > 0)
182 url_fskip(pb, size - codec->extradata_size - 18);
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183 }
184}
185
186
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187int wav_codec_get_id(unsigned int tag, int bps)
188{
189 int id;
190 id = codec_get_id(codec_wav_tags, tag);
191 if (id <= 0)
192 return id;
193 /* handle specific u8 codec */
194 if (id == CODEC_ID_PCM_S16LE && bps == 8)
195 id = CODEC_ID_PCM_U8;
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196 if (id == CODEC_ID_PCM_S16LE && bps == 24)
197 id = CODEC_ID_PCM_S24LE;
198 if (id == CODEC_ID_PCM_S16LE && bps == 32)
199 id = CODEC_ID_PCM_S32LE;
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200 return id;
201}
202
a9e35095 203#ifdef CONFIG_MUXERS
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204typedef struct {
205 offset_t data;
206} WAVContext;
207
208static int wav_write_header(AVFormatContext *s)
209{
c9a65ca8 210 WAVContext *wav = s->priv_data;
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211 ByteIOContext *pb = &s->pb;
212 offset_t fmt;
213
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214 put_tag(pb, "RIFF");
215 put_le32(pb, 0); /* file length */
216 put_tag(pb, "WAVE");
217
218 /* format header */
219 fmt = start_tag(pb, "fmt ");
01f4895c 220 if (put_wav_header(pb, s->streams[0]->codec) < 0) {
1ea4f593 221 av_free(wav);
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222 return -1;
223 }
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224 end_tag(pb, fmt);
225
01f4895c 226 av_set_pts_info(s->streams[0], 64, 1, s->streams[0]->codec->sample_rate);
a1e568bd 227
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228 /* data header */
229 wav->data = start_tag(pb, "data");
115329f1 230
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231 put_flush_packet(pb);
232
233 return 0;
234}
235
e928649b 236static int wav_write_packet(AVFormatContext *s, AVPacket *pkt)
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237{
238 ByteIOContext *pb = &s->pb;
e928649b 239 put_buffer(pb, pkt->data, pkt->size);
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240 return 0;
241}
242
243static int wav_write_trailer(AVFormatContext *s)
244{
245 ByteIOContext *pb = &s->pb;
246 WAVContext *wav = s->priv_data;
247 offset_t file_size;
248
249 if (!url_is_streamed(&s->pb)) {
250 end_tag(pb, wav->data);
251
252 /* update file size */
253 file_size = url_ftell(pb);
254 url_fseek(pb, 4, SEEK_SET);
0c1a9eda 255 put_le32(pb, (uint32_t)(file_size - 8));
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256 url_fseek(pb, file_size, SEEK_SET);
257
258 put_flush_packet(pb);
259 }
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260 return 0;
261}
a9e35095 262#endif //CONFIG_MUXERS
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263
264/* return the size of the found tag */
265/* XXX: > 2GB ? */
0c1a9eda 266static int find_tag(ByteIOContext *pb, uint32_t tag1)
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267{
268 unsigned int tag;
269 int size;
270
271 for(;;) {
272 if (url_feof(pb))
273 return -1;
274 tag = get_le32(pb);
275 size = get_le32(pb);
276 if (tag == tag1)
277 break;
278 url_fseek(pb, size, SEEK_CUR);
279 }
280 if (size < 0)
281 size = 0x7fffffff;
282 return size;
283}
284
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285static int wav_probe(AVProbeData *p)
286{
287 /* check file header */
288 if (p->buf_size <= 32)
289 return 0;
290 if (p->buf[0] == 'R' && p->buf[1] == 'I' &&
291 p->buf[2] == 'F' && p->buf[3] == 'F' &&
292 p->buf[8] == 'W' && p->buf[9] == 'A' &&
293 p->buf[10] == 'V' && p->buf[11] == 'E')
294 return AVPROBE_SCORE_MAX;
295 else
296 return 0;
297}
298
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299/* wav input */
300static int wav_read_header(AVFormatContext *s,
301 AVFormatParameters *ap)
302{
303 int size;
304 unsigned int tag;
305 ByteIOContext *pb = &s->pb;
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306 AVStream *st;
307
308 /* check RIFF header */
309 tag = get_le32(pb);
310
311 if (tag != MKTAG('R', 'I', 'F', 'F'))
312 return -1;
313 get_le32(pb); /* file size */
314 tag = get_le32(pb);
315 if (tag != MKTAG('W', 'A', 'V', 'E'))
316 return -1;
115329f1 317
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318 /* parse fmt header */
319 size = find_tag(pb, MKTAG('f', 'm', 't', ' '));
320 if (size < 0)
321 return -1;
c9a65ca8 322 st = av_new_stream(s, 0);
de6d9b64 323 if (!st)
c9a65ca8 324 return AVERROR_NOMEM;
de6d9b64 325
01f4895c 326 get_wav_header(pb, st->codec, size);
f9b5459e 327 st->need_parsing = 1;
595bf4ef 328
01f4895c 329 av_set_pts_info(st, 64, 1, st->codec->sample_rate);
595bf4ef 330
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331 size = find_tag(pb, MKTAG('d', 'a', 't', 'a'));
332 if (size < 0)
333 return -1;
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334 return 0;
335}
336
337#define MAX_SIZE 4096
338
339static int wav_read_packet(AVFormatContext *s,
340 AVPacket *pkt)
341{
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342 int ret, size;
343 AVStream *st;
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344
345 if (url_feof(&s->pb))
0bd586c5 346 return AVERROR_IO;
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347 st = s->streams[0];
348
349 size = MAX_SIZE;
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350 if (st->codec->block_align > 1) {
351 if (size < st->codec->block_align)
352 size = st->codec->block_align;
353 size = (size / st->codec->block_align) * st->codec->block_align;
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354 }
355 if (av_new_packet(pkt, size))
0bd586c5 356 return AVERROR_IO;
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357 pkt->stream_index = 0;
358
359 ret = get_buffer(&s->pb, pkt->data, pkt->size);
360 if (ret < 0)
361 av_free_packet(pkt);
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362 /* note: we need to modify the packet size here to handle the last
363 packet */
364 pkt->size = ret;
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365 return ret;
366}
367
368static int wav_read_close(AVFormatContext *s)
369{
370 return 0;
371}
372
115329f1 373static int wav_read_seek(AVFormatContext *s,
7b3c1382 374 int stream_index, int64_t timestamp, int flags)
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375{
376 AVStream *st;
377
378 st = s->streams[0];
01f4895c 379 switch(st->codec->codec_id) {
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380 case CODEC_ID_MP2:
381 case CODEC_ID_MP3:
382 case CODEC_ID_AC3:
23c99253 383 case CODEC_ID_DTS:
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384 /* use generic seeking with dynamically generated indexes */
385 return -1;
386 default:
387 break;
388 }
7b3c1382 389 return pcm_read_seek(s, stream_index, timestamp, flags);
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390}
391
392
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393static AVInputFormat wav_iformat = {
394 "wav",
395 "wav format",
396 0,
397 wav_probe,
398 wav_read_header,
399 wav_read_packet,
400 wav_read_close,
f9b5459e 401 wav_read_seek,
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402};
403
a9e35095 404#ifdef CONFIG_MUXERS
c9a65ca8 405static AVOutputFormat wav_oformat = {
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406 "wav",
407 "wav format",
408 "audio/x-wav",
409 "wav",
c9a65ca8 410 sizeof(WAVContext),
5ed8fafc 411 CODEC_ID_PCM_S16LE,
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412 CODEC_ID_NONE,
413 wav_write_header,
414 wav_write_packet,
415 wav_write_trailer,
de6d9b64 416};
a9e35095 417#endif //CONFIG_MUXERS
c9a65ca8 418
c3775e54 419int ff_wav_init(void)
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420{
421 av_register_input_format(&wav_iformat);
a9e35095 422#ifdef CONFIG_MUXERS
c9a65ca8 423 av_register_output_format(&wav_oformat);
a9e35095 424#endif //CONFIG_MUXERS
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425 return 0;
426}