Use enum typers instead of int.
[libav.git] / libavformat / aiff.c
CommitLineData
f11288da 1/*
7fbde343 2 * AIFF/AIFF-C muxer and demuxer
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3 * Copyright (c) 2006 Patrick Guimond
4 *
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5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
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8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
b78e7197 10 * version 2.1 of the License, or (at your option) any later version.
f11288da 11 *
b78e7197 12 * FFmpeg is distributed in the hope that it will be useful,
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
b78e7197 18 * License along with FFmpeg; if not, write to the Free Software
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19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
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21
22#include "libavutil/intfloat_readwrite.h"
f11288da 23#include "avformat.h"
7241a6bb 24#include "raw.h"
9d9f4119 25#include "riff.h"
f11288da 26
7caf0cc6 27static const AVCodecTag codec_aiff_tags[] = {
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28 { CODEC_ID_PCM_S16BE, MKTAG('N','O','N','E') },
29 { CODEC_ID_PCM_S8, MKTAG('N','O','N','E') },
30 { CODEC_ID_PCM_S24BE, MKTAG('N','O','N','E') },
31 { CODEC_ID_PCM_S32BE, MKTAG('N','O','N','E') },
b1c00341
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32 { CODEC_ID_PCM_F32BE, MKTAG('f','l','3','2') },
33 { CODEC_ID_PCM_F64BE, MKTAG('f','l','6','4') },
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34 { CODEC_ID_PCM_ALAW, MKTAG('a','l','a','w') },
35 { CODEC_ID_PCM_MULAW, MKTAG('u','l','a','w') },
36 { CODEC_ID_MACE3, MKTAG('M','A','C','3') },
37 { CODEC_ID_MACE6, MKTAG('M','A','C','6') },
38 { CODEC_ID_GSM, MKTAG('G','S','M',' ') },
39 { CODEC_ID_ADPCM_G726, MKTAG('G','7','2','6') },
40 { CODEC_ID_PCM_S16LE, MKTAG('s','o','w','t') },
3a957df4 41 { CODEC_ID_ADPCM_IMA_QT, MKTAG('i','m','a','4') },
c7adbedb 42 { CODEC_ID_QDM2, MKTAG('Q','D','M','2') },
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43 { 0, 0 },
44};
45
46#define AIFF 0
47#define AIFF_C_VERSION1 0xA2805140
48
fb65d2ca 49static enum CodecID aiff_codec_get_id(int bps)
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50{
51 if (bps <= 8)
52 return CODEC_ID_PCM_S8;
53 if (bps <= 16)
54 return CODEC_ID_PCM_S16BE;
55 if (bps <= 24)
56 return CODEC_ID_PCM_S24BE;
57 if (bps <= 32)
58 return CODEC_ID_PCM_S32BE;
59
60 /* bigger than 32 isn't allowed */
fb65d2ca 61 return CODEC_ID_NONE;
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62}
63
64/* returns the size of the found tag */
65static int get_tag(ByteIOContext *pb, uint32_t * tag)
66{
67 int size;
68
69 if (url_feof(pb))
6f3e0b21 70 return AVERROR(EIO);
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71
72 *tag = get_le32(pb);
73 size = get_be32(pb);
74
75 if (size < 0)
76 size = 0x7fffffff;
77
78 return size;
79}
80
81/* Metadata string read */
82static void get_meta(ByteIOContext *pb, char * str, int strsize, int size)
83{
84 int res;
85
86 if (size > strsize-1)
87 res = get_buffer(pb, (uint8_t*)str, strsize-1);
88 else
89 res = get_buffer(pb, (uint8_t*)str, size);
90
91 if (res < 0)
92 return;
93
94 str[res] = 0;
95 if (size & 1)
96 size++;
97 size -= res;
a492ad9f 98 if (size)
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99 url_fskip(pb, size);
100}
101
f11288da 102/* Returns the number of sound data frames or negative on error */
7b49ce2e 103static unsigned int get_aiff_header(ByteIOContext *pb, AVCodecContext *codec,
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104 int size, unsigned version)
105{
106 AVExtFloat ext;
107 double sample_rate;
108 unsigned int num_frames;
109
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110 if (size & 1)
111 size++;
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112 codec->codec_type = CODEC_TYPE_AUDIO;
113 codec->channels = get_be16(pb);
114 num_frames = get_be32(pb);
dd1c8f3e 115 codec->bits_per_coded_sample = get_be16(pb);
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116
117 get_buffer(pb, (uint8_t*)&ext, sizeof(ext));/* Sample rate is in */
118 sample_rate = av_ext2dbl(ext); /* 80 bits BE IEEE extended float */
119 codec->sample_rate = sample_rate;
120 size -= 18;
121
122 /* Got an AIFF-C? */
123 if (version == AIFF_C_VERSION1) {
124 codec->codec_tag = get_le32(pb);
9df21f24 125 codec->codec_id = codec_get_id(codec_aiff_tags, codec->codec_tag);
f11288da 126
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127 switch (codec->codec_id) {
128 case CODEC_ID_PCM_S16BE:
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129 codec->codec_id = aiff_codec_get_id(codec->bits_per_coded_sample);
130 codec->bits_per_coded_sample = av_get_bits_per_sample(codec->codec_id);
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131 break;
132 case CODEC_ID_ADPCM_IMA_QT:
133 codec->block_align = 34*codec->channels;
e0130159 134 codec->frame_size = 64;
3a957df4 135 break;
4649fa90 136 case CODEC_ID_MACE3:
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137 codec->block_align = 2*codec->channels;
138 codec->frame_size = 6;
139 break;
4649fa90 140 case CODEC_ID_MACE6:
112249de 141 codec->block_align = 1*codec->channels;
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142 codec->frame_size = 6;
143 break;
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144 case CODEC_ID_GSM:
145 codec->block_align = 33;
146 codec->frame_size = 160;
147 break;
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148 default:
149 break;
f11288da 150 }
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151 size -= 4;
152 } else {
153 /* Need the codec type */
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154 codec->codec_id = aiff_codec_get_id(codec->bits_per_coded_sample);
155 codec->bits_per_coded_sample = av_get_bits_per_sample(codec->codec_id);
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156 }
157
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158 /* Block align needs to be computed in all cases, as the definition
159 * is specific to applications -> here we use the WAVE format definition */
3a957df4 160 if (!codec->block_align)
dd1c8f3e 161 codec->block_align = (codec->bits_per_coded_sample * codec->channels) >> 3;
f11288da 162
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163 codec->bit_rate = (codec->frame_size ? codec->sample_rate/codec->frame_size :
164 codec->sample_rate) * (codec->block_align << 3);
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165
166 /* Chunk is over */
167 if (size)
168 url_fseek(pb, size, SEEK_CUR);
169
170 return num_frames;
171}
172
8212568a 173#ifdef CONFIG_AIFF_MUXER
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174typedef struct {
175 offset_t form;
176 offset_t frames;
177 offset_t ssnd;
178} AIFFOutputContext;
179
180static int aiff_write_header(AVFormatContext *s)
181{
182 AIFFOutputContext *aiff = s->priv_data;
899681cd 183 ByteIOContext *pb = s->pb;
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184 AVCodecContext *enc = s->streams[0]->codec;
185 AVExtFloat sample_rate;
400615b6 186 int aifc = 0;
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187
188 /* First verify if format is ok */
9df21f24 189 if (!enc->codec_tag)
f11288da 190 return -1;
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191 if (enc->codec_tag != MKTAG('N','O','N','E'))
192 aifc = 1;
193
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194 /* FORM AIFF header */
195 put_tag(pb, "FORM");
196 aiff->form = url_ftell(pb);
197 put_be32(pb, 0); /* file length */
400615b6 198 put_tag(pb, aifc ? "AIFC" : "AIFF");
f11288da 199
e13c0783 200 if (aifc) { // compressed audio
dd1c8f3e 201 enc->bits_per_coded_sample = 16;
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202 if (!enc->block_align) {
203 av_log(s, AV_LOG_ERROR, "block align not set\n");
204 return -1;
205 }
8d97aedb
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206 /* Version chunk */
207 put_tag(pb, "FVER");
208 put_be32(pb, 4);
209 put_be32(pb, 0xA2805140);
400615b6 210 }
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211
212 /* Common chunk */
213 put_tag(pb, "COMM");
400615b6 214 put_be32(pb, aifc ? 24 : 18); /* size */
9df21f24 215 put_be16(pb, enc->channels); /* Number of channels */
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216
217 aiff->frames = url_ftell(pb);
9df21f24 218 put_be32(pb, 0); /* Number of frames */
f11288da 219
dd1c8f3e
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220 if (!enc->bits_per_coded_sample)
221 enc->bits_per_coded_sample = av_get_bits_per_sample(enc->codec_id);
222 if (!enc->bits_per_coded_sample) {
e27d9277
BC
223 av_log(s, AV_LOG_ERROR, "could not compute bits per sample\n");
224 return -1;
225 }
226 if (!enc->block_align)
dd1c8f3e 227 enc->block_align = (enc->bits_per_coded_sample * enc->channels) >> 3;
e27d9277 228
dd1c8f3e 229 put_be16(pb, enc->bits_per_coded_sample); /* Sample size */
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230
231 sample_rate = av_dbl2ext((double)enc->sample_rate);
232 put_buffer(pb, (uint8_t*)&sample_rate, sizeof(sample_rate));
233
400615b6 234 if (aifc) {
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235 put_le32(pb, enc->codec_tag);
236 put_be16(pb, 0);
400615b6 237 }
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238
239 /* Sound data chunk */
240 put_tag(pb, "SSND");
241 aiff->ssnd = url_ftell(pb); /* Sound chunk size */
242 put_be32(pb, 0); /* Sound samples data size */
243 put_be32(pb, 0); /* Data offset */
244 put_be32(pb, 0); /* Block-size (block align) */
245
246 av_set_pts_info(s->streams[0], 64, 1, s->streams[0]->codec->sample_rate);
247
248 /* Data is starting here */
249 put_flush_packet(pb);
250
251 return 0;
252}
253
254static int aiff_write_packet(AVFormatContext *s, AVPacket *pkt)
255{
899681cd 256 ByteIOContext *pb = s->pb;
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257 put_buffer(pb, pkt->data, pkt->size);
258 return 0;
259}
260
261static int aiff_write_trailer(AVFormatContext *s)
262{
899681cd 263 ByteIOContext *pb = s->pb;
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264 AIFFOutputContext *aiff = s->priv_data;
265 AVCodecContext *enc = s->streams[0]->codec;
266
267 /* Chunks sizes must be even */
268 offset_t file_size, end_size;
269 end_size = file_size = url_ftell(pb);
270 if (file_size & 1) {
271 put_byte(pb, 0);
272 end_size++;
273 }
274
899681cd 275 if (!url_is_streamed(s->pb)) {
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276 /* File length */
277 url_fseek(pb, aiff->form, SEEK_SET);
c6f53812 278 put_be32(pb, file_size - aiff->form - 4);
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279
280 /* Number of sample frames */
281 url_fseek(pb, aiff->frames, SEEK_SET);
c6f53812 282 put_be32(pb, (file_size-aiff->ssnd-12)/enc->block_align);
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283
284 /* Sound Data chunk size */
285 url_fseek(pb, aiff->ssnd, SEEK_SET);
c6f53812 286 put_be32(pb, file_size - aiff->ssnd - 4);
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287
288 /* return to the end */
289 url_fseek(pb, end_size, SEEK_SET);
290
291 put_flush_packet(pb);
292 }
293
294 return 0;
295}
8212568a 296#endif /* CONFIG_AIFF_MUXER */
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297
298static int aiff_probe(AVProbeData *p)
299{
300 /* check file header */
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301 if (p->buf[0] == 'F' && p->buf[1] == 'O' &&
302 p->buf[2] == 'R' && p->buf[3] == 'M' &&
303 p->buf[8] == 'A' && p->buf[9] == 'I' &&
304 p->buf[10] == 'F' && (p->buf[11] == 'F' || p->buf[11] == 'C'))
305 return AVPROBE_SCORE_MAX;
306 else
307 return 0;
308}
309
310/* aiff input */
311static int aiff_read_header(AVFormatContext *s,
312 AVFormatParameters *ap)
313{
620d1d78
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314 int size, filesize;
315 offset_t offset = 0;
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316 uint32_t tag;
317 unsigned version = AIFF_C_VERSION1;
899681cd 318 ByteIOContext *pb = s->pb;
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319 AVStream * st = s->streams[0];
320
321 /* check FORM header */
322 filesize = get_tag(pb, &tag);
323 if (filesize < 0 || tag != MKTAG('F', 'O', 'R', 'M'))
324 return AVERROR_INVALIDDATA;
325
326 /* AIFF data type */
327 tag = get_le32(pb);
328 if (tag == MKTAG('A', 'I', 'F', 'F')) /* Got an AIFF file */
329 version = AIFF;
330 else if (tag != MKTAG('A', 'I', 'F', 'C')) /* An AIFF-C file then */
331 return AVERROR_INVALIDDATA;
332
333 filesize -= 4;
334
335 st = av_new_stream(s, 0);
336 if (!st)
769e10f0 337 return AVERROR(ENOMEM);
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338
339 while (filesize > 0) {
340 /* parse different chunks */
341 size = get_tag(pb, &tag);
342 if (size < 0)
343 return size;
344
345 filesize -= size + 8;
346
347 switch (tag) {
54d8fd20
BC
348 case MKTAG('C', 'O', 'M', 'M'): /* Common chunk */
349 /* Then for the complete header info */
24c1d3b5 350 st->nb_frames = get_aiff_header(pb, st->codec, size, version);
54d8fd20
BC
351 if (st->nb_frames < 0)
352 return st->nb_frames;
353 if (offset > 0) // COMM is after SSND
354 goto got_sound;
355 break;
356 case MKTAG('F', 'V', 'E', 'R'): /* Version chunk */
357 version = get_be32(pb);
358 break;
359 case MKTAG('N', 'A', 'M', 'E'): /* Sample name chunk */
24c1d3b5 360 get_meta(pb, s->title, sizeof(s->title), size);
54d8fd20
BC
361 break;
362 case MKTAG('A', 'U', 'T', 'H'): /* Author chunk */
24c1d3b5 363 get_meta(pb, s->author, sizeof(s->author), size);
54d8fd20
BC
364 break;
365 case MKTAG('(', 'c', ')', ' '): /* Copyright chunk */
24c1d3b5 366 get_meta(pb, s->copyright, sizeof(s->copyright), size);
54d8fd20
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367 break;
368 case MKTAG('A', 'N', 'N', 'O'): /* Annotation chunk */
24c1d3b5 369 get_meta(pb, s->comment, sizeof(s->comment), size);
54d8fd20
BC
370 break;
371 case MKTAG('S', 'S', 'N', 'D'): /* Sampled sound chunk */
372 offset = get_be32(pb); /* Offset of sound data */
373 get_be32(pb); /* BlockSize... don't care */
374 offset += url_ftell(pb); /* Compute absolute data offset */
3f60afad 375 if (st->codec->block_align) /* Assume COMM already parsed */
54d8fd20
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376 goto got_sound;
377 if (url_is_streamed(pb)) {
378 av_log(s, AV_LOG_ERROR, "file is not seekable\n");
379 return -1;
380 }
381 url_fskip(pb, size - 8);
382 break;
b8d3daca 383 case MKTAG('w', 'a', 'v', 'e'):
9c7fd997
BC
384 if ((uint64_t)size > (1<<30))
385 return -1;
b8d3daca
BC
386 st->codec->extradata = av_mallocz(size + FF_INPUT_BUFFER_PADDING_SIZE);
387 if (!st->codec->extradata)
388 return AVERROR(ENOMEM);
389 st->codec->extradata_size = size;
390 get_buffer(pb, st->codec->extradata, size);
391 break;
54d8fd20
BC
392 default: /* Jump */
393 if (size & 1) /* Always even aligned */
394 size++;
395 url_fskip (pb, size);
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396 }
397 }
398
3f60afad
BC
399 if (!st->codec->block_align) {
400 av_log(s, AV_LOG_ERROR, "could not find COMM tag\n");
401 return -1;
402 }
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403
404got_sound:
405 /* Now positioned, get the sound data start and end */
406 if (st->nb_frames)
407 s->file_size = st->nb_frames * st->codec->block_align;
408
409 av_set_pts_info(st, 64, 1, st->codec->sample_rate);
410 st->start_time = 0;
e0130159
BC
411 st->duration = st->codec->frame_size ?
412 st->nb_frames * st->codec->frame_size : st->nb_frames;
f11288da
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413
414 /* Position the stream at the first block */
620d1d78 415 url_fseek(pb, offset, SEEK_SET);
f11288da
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416
417 return 0;
418}
419
420#define MAX_SIZE 4096
421
422static int aiff_read_packet(AVFormatContext *s,
423 AVPacket *pkt)
424{
a959f0ea
BC
425 AVStream *st = s->streams[0];
426 int res;
f11288da
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427
428 /* End of stream may be reached */
899681cd 429 if (url_feof(s->pb))
6f3e0b21 430 return AVERROR(EIO);
f11288da 431
f11288da 432 /* Now for that packet */
899681cd 433 res = av_get_packet(s->pb, pkt, (MAX_SIZE / st->codec->block_align) * st->codec->block_align);
f11288da
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434 if (res < 0)
435 return res;
436
437 /* Only one stream in an AIFF file */
438 pkt->stream_index = 0;
f11288da
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439 return 0;
440}
441
ff70e601
MR
442#ifdef CONFIG_AIFF_DEMUXER
443AVInputFormat aiff_demuxer = {
f11288da 444 "aiff",
bde15e74 445 NULL_IF_CONFIG_SMALL("Audio IFF"),
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446 0,
447 aiff_probe,
448 aiff_read_header,
449 aiff_read_packet,
4c638f0c 450 NULL,
5256e42c 451 pcm_read_seek,
c1854592 452 .codec_tag= (const AVCodecTag* const []){codec_aiff_tags, 0},
f11288da 453};
ff70e601 454#endif
f11288da 455
8a85f46d 456#ifdef CONFIG_AIFF_MUXER
ff70e601 457AVOutputFormat aiff_muxer = {
f11288da 458 "aiff",
bde15e74 459 NULL_IF_CONFIG_SMALL("Audio IFF"),
f11288da
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460 "audio/aiff",
461 "aif,aiff,afc,aifc",
462 sizeof(AIFFOutputContext),
463 CODEC_ID_PCM_S16BE,
464 CODEC_ID_NONE,
465 aiff_write_header,
466 aiff_write_packet,
467 aiff_write_trailer,
c1854592 468 .codec_tag= (const AVCodecTag* const []){codec_aiff_tags, 0},
f11288da 469};
ff70e601 470#endif