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ffmpeg / libavformat / oggparsespeex.c @ 470bce2b

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/*
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      Copyright (C) 2008  Reimar Döffinger
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      Permission is hereby granted, free of charge, to any person
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      obtaining a copy of this software and associated documentation
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      files (the "Software"), to deal in the Software without
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      restriction, including without limitation the rights to use, copy,
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      modify, merge, publish, distribute, sublicense, and/or sell copies
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      of the Software, and to permit persons to whom the Software is
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      furnished to do so, subject to the following conditions:
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      The above copyright notice and this permission notice shall be
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      included in all copies or substantial portions of the Software.
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      THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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      EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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      MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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      NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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      HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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      WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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      OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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      DEALINGS IN THE SOFTWARE.
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**/
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#include <stdlib.h>
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#include "libavutil/bswap.h"
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#include "libavutil/avstring.h"
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#include "libavcodec/bitstream.h"
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#include "libavcodec/bytestream.h"
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#include "avformat.h"
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#include "oggdec.h"
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static int speex_header(AVFormatContext *s, int idx) {
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    struct ogg *ogg = s->priv_data;
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    struct ogg_stream *os = ogg->streams + idx;
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    AVStream *st = s->streams[idx];
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    uint8_t *p = os->buf + os->pstart;
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    if (os->psize < 80)
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        return 1;
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    st->codec->codec_type = CODEC_TYPE_AUDIO;
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    st->codec->codec_id = CODEC_ID_SPEEX;
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    st->codec->sample_rate = AV_RL32(p + 36);
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    st->codec->channels = AV_RL32(p + 48);
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    st->codec->extradata_size = os->psize;
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    st->codec->extradata = av_malloc(st->codec->extradata_size);
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    memcpy(st->codec->extradata, p, st->codec->extradata_size);
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    st->time_base.num = 1;
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    st->time_base.den = st->codec->sample_rate;
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    return 0;
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}
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const struct ogg_codec ff_speex_codec = {
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    .magic = "Speex   ",
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    .magicsize = 8,
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    .header = speex_header
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};