Modify the Ogg/Speex demuxer and the libspeex decoder so that they always treat
[libav.git] / libavformat / oggparsespeex.c
CommitLineData
cb4ddf77
RD
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>
245976da
DB
26#include "libavutil/bswap.h"
27#include "libavutil/avstring.h"
9106a698 28#include "libavcodec/get_bits.h"
245976da 29#include "libavcodec/bytestream.h"
cb4ddf77 30#include "avformat.h"
cb4ddf77 31#include "oggdec.h"
cb4ddf77
RD
32
33static int speex_header(AVFormatContext *s, int idx) {
77be08ee
MR
34 struct ogg *ogg = s->priv_data;
35 struct ogg_stream *os = ogg->streams + idx;
cb4ddf77
RD
36 AVStream *st = s->streams[idx];
37 uint8_t *p = os->buf + os->pstart;
38
6e6abd02
DC
39 if (os->seq > 1)
40 return 0;
cb4ddf77 41
6e6abd02 42 if (os->seq == 0) {
eb5f3c54 43 int frames_per_packet;
1a4ab332
DC
44 st->codec->codec_type = CODEC_TYPE_AUDIO;
45 st->codec->codec_id = CODEC_ID_SPEEX;
cb4ddf77 46
1a4ab332
DC
47 st->codec->sample_rate = AV_RL32(p + 36);
48 st->codec->channels = AV_RL32(p + 48);
eb5f3c54
JR
49
50 /* We treat the whole Speex packet as a single frame everywhere Speex
51 is handled in FFmpeg. This avoids the complexities of splitting
52 and joining individual Speex frames, which are not always
53 byte-aligned. */
533c3c84 54 st->codec->frame_size = AV_RL32(p + 56);
eb5f3c54
JR
55 frames_per_packet = AV_RL32(p + 64);
56 if (frames_per_packet)
57 st->codec->frame_size *= frames_per_packet;
58
1a4ab332 59 st->codec->extradata_size = os->psize;
12d7c079
DC
60 st->codec->extradata = av_malloc(st->codec->extradata_size
61 + FF_INPUT_BUFFER_PADDING_SIZE);
1a4ab332 62 memcpy(st->codec->extradata, p, st->codec->extradata_size);
cb4ddf77 63
1a4ab332
DC
64 st->time_base.num = 1;
65 st->time_base.den = st->codec->sample_rate;
6e6abd02
DC
66 } else
67 vorbis_comment(s, p, os->psize);
cb4ddf77 68
6e6abd02 69 return 1;
cb4ddf77
RD
70}
71
77be08ee 72const struct ogg_codec ff_speex_codec = {
cb4ddf77
RD
73 .magic = "Speex ",
74 .magicsize = 8,
75 .header = speex_header
76};