Fix Speex header parsing in ogg demuxer
[libav.git] / libavformat / oggparsespeex.c
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1/*
2 Copyright (C) 2008 Reimar Döffinger
3
4 Permission is hereby granted, free of charge, to any person
5 obtaining a copy of this software and associated documentation
6 files (the "Software"), to deal in the Software without
7 restriction, including without limitation the rights to use, copy,
8 modify, merge, publish, distribute, sublicense, and/or sell copies
9 of the Software, and to permit persons to whom the Software is
10 furnished to do so, subject to the following conditions:
11
12 The above copyright notice and this permission notice shall be
13 included in all copies or substantial portions of the Software.
14
15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
19 HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
20 WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 DEALINGS IN THE SOFTWARE.
23**/
24
25#include <stdlib.h>
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26#include "libavutil/bswap.h"
27#include "libavutil/avstring.h"
28#include "libavcodec/bitstream.h"
29#include "libavcodec/bytestream.h"
cb4ddf77 30#include "avformat.h"
cb4ddf77 31#include "oggdec.h"
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32
33static int speex_header(AVFormatContext *s, int idx) {
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34 struct ogg *ogg = s->priv_data;
35 struct ogg_stream *os = ogg->streams + idx;
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36 AVStream *st = s->streams[idx];
37 uint8_t *p = os->buf + os->pstart;
38
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39 if (os->seq > 1)
40 return 0;
cb4ddf77 41
6e6abd02 42 if (os->seq == 0) {
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43 st->codec->codec_type = CODEC_TYPE_AUDIO;
44 st->codec->codec_id = CODEC_ID_SPEEX;
45
46 st->codec->sample_rate = AV_RL32(p + 36);
47 st->codec->channels = AV_RL32(p + 48);
48 st->codec->extradata_size = os->psize;
49 st->codec->extradata = av_malloc(st->codec->extradata_size);
50 memcpy(st->codec->extradata, p, st->codec->extradata_size);
51
52 st->time_base.num = 1;
53 st->time_base.den = st->codec->sample_rate;
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54 } else
55 vorbis_comment(s, p, os->psize);
cb4ddf77 56
6e6abd02 57 return 1;
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58}
59
77be08ee 60const struct ogg_codec ff_speex_codec = {
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61 .magic = "Speex ",
62 .magicsize = 8,
63 .header = speex_header
64};