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eb5f3c5434
a packet of Speex frames as a single frame. Originally committed as revision 19734 to svn://svn.ffmpeg.org/ffmpeg/trunk
77 lines
2.8 KiB
C
77 lines
2.8 KiB
C
/*
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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/get_bits.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->seq > 1)
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return 0;
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if (os->seq == 0) {
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int frames_per_packet;
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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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/* We treat the whole Speex packet as a single frame everywhere Speex
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is handled in FFmpeg. This avoids the complexities of splitting
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and joining individual Speex frames, which are not always
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byte-aligned. */
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st->codec->frame_size = AV_RL32(p + 56);
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frames_per_packet = AV_RL32(p + 64);
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if (frames_per_packet)
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st->codec->frame_size *= frames_per_packet;
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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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+ FF_INPUT_BUFFER_PADDING_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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} else
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vorbis_comment(s, p, os->psize);
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return 1;
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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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};
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