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provisions for raw PCM audio 

Originally committed as revision 2291 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Mike Melanson 2003-09-18 04:25:41 +00:00
parent d86e8568e6
commit b59ebf6220
1 changed files with 9 additions and 2 deletions
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11
libavformat/ipmovie.c
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@ -133,6 +133,12 @@ static int load_ipmovie_packet(IPMVEContext *s, ByteIOContext *pb,
if (s->audio_chunk_offset) { if (s->audio_chunk_offset) {
/* adjust for PCM audio by skipping chunk header */
if (s->audio_type != CODEC_ID_INTERPLAY_DPCM) {
s->audio_chunk_offset += 6;
s->audio_chunk_size -= 6;
}
url_fseek(pb, s->audio_chunk_offset, SEEK_SET); url_fseek(pb, s->audio_chunk_offset, SEEK_SET);
s->audio_chunk_offset = 0; s->audio_chunk_offset = 0;
@ -568,8 +574,9 @@ static int ipmovie_read_header(AVFormatContext *s,
st->codec.sample_rate = ipmovie->audio_sample_rate; st->codec.sample_rate = ipmovie->audio_sample_rate;
st->codec.bits_per_sample = ipmovie->audio_bits; st->codec.bits_per_sample = ipmovie->audio_bits;
st->codec.bit_rate = st->codec.channels * st->codec.sample_rate * st->codec.bit_rate = st->codec.channels * st->codec.sample_rate *
st->codec.bits_per_sample / st->codec.bits_per_sample;
(st->codec.codec_id == CODEC_ID_INTERPLAY_DPCM) ? 2 : 1; if (st->codec.codec_id == CODEC_ID_INTERPLAY_DPCM)
st->codec.bit_rate /= 2;
st->codec.block_align = st->codec.channels * st->codec.bits_per_sample; st->codec.block_align = st->codec.channels * st->codec.bits_per_sample;
return 0; return 0;