get rid of the last svn mentions
[libav.git] / libavformat / oggparseflac.c
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1/*
2 * Copyright (C) 2005 Matthieu CASTET
115329f1 3 *
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4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
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7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
b78e7197 9 * version 2.1 of the License, or (at your option) any later version.
bcfc40ae 10 *
b78e7197 11 * FFmpeg is distributed in the hope that it will be useful,
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
b78e7197 17 * License along with FFmpeg; if not, write to the Free Software
5509bffa 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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19 */
20
21#include <stdlib.h>
9106a698 22#include "libavcodec/get_bits.h"
7fa9a0a2 23#include "libavcodec/flac.h"
bcfc40ae 24#include "avformat.h"
a0ddef24 25#include "oggdec.h"
bcfc40ae 26
7fa9a0a2 27#define OGG_FLAC_METADATA_TYPE_STREAMINFO 0x7F
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28
29static int
30flac_header (AVFormatContext * s, int idx)
31{
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32 struct ogg *ogg = s->priv_data;
33 struct ogg_stream *os = ogg->streams + idx;
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34 AVStream *st = s->streams[idx];
35 GetBitContext gb;
7fa9a0a2 36 FLACStreaminfo si;
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37 int mdt;
38
39 if (os->buf[os->pstart] == 0xff)
40 return 0;
41
42 init_get_bits(&gb, os->buf + os->pstart, os->psize*8);
eedfe222 43 skip_bits1(&gb); /* metadata_last */
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44 mdt = get_bits(&gb, 7);
45
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46 if (mdt == OGG_FLAC_METADATA_TYPE_STREAMINFO) {
47 uint8_t *streaminfo_start = os->buf + os->pstart + 5 + 4 + 4 + 4;
eedfe222 48 skip_bits_long(&gb, 4*8); /* "FLAC" */
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49 if(get_bits(&gb, 8) != 1) /* unsupported major version */
50 return -1;
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51 skip_bits_long(&gb, 8 + 16); /* minor version + header count */
52 skip_bits_long(&gb, 4*8); /* "fLaC" */
115329f1 53
bcfc40ae 54 /* METADATA_BLOCK_HEADER */
b997b67c 55 if (get_bits_long(&gb, 32) != FLAC_STREAMINFO_SIZE)
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56 return -1;
57
7fa9a0a2 58 ff_flac_parse_streaminfo(st->codec, &si, streaminfo_start);
115329f1 59
72415b2a 60 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
01f4895c 61 st->codec->codec_id = CODEC_ID_FLAC;
bcfc40ae 62
01f4895c 63 st->codec->extradata =
bcfc40ae 64 av_malloc(FLAC_STREAMINFO_SIZE + FF_INPUT_BUFFER_PADDING_SIZE);
7fa9a0a2 65 memcpy(st->codec->extradata, streaminfo_start, FLAC_STREAMINFO_SIZE);
01f4895c 66 st->codec->extradata_size = FLAC_STREAMINFO_SIZE;
3644cb8f 67
a351110e 68 av_set_pts_info(st, 64, 1, st->codec->sample_rate);
7fa9a0a2 69 } else if (mdt == FLAC_METADATA_TYPE_VORBIS_COMMENT) {
b53cde48 70 ff_vorbis_comment (s, &st->metadata, os->buf + os->pstart + 4, os->psize - 4);
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71 }
72
73 return 1;
74}
75
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76static int
77old_flac_header (AVFormatContext * s, int idx)
78{
79 AVStream *st = s->streams[idx];
72415b2a 80 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
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81 st->codec->codec_id = CODEC_ID_FLAC;
82
83 return 0;
84}
85
77be08ee 86const struct ogg_codec ff_flac_codec = {
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87 .magic = "\177FLAC",
88 .magicsize = 5,
89 .header = flac_header
90};
880e3ef4 91
77be08ee 92const struct ogg_codec ff_old_flac_codec = {
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93 .magic = "fLaC",
94 .magicsize = 4,
95 .header = old_flac_header
96};