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fix sample size for uncompressed sound

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Originally committed as revision 5165 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Baptiste Coudurier 2006-03-14 00:25:46 +00:00
parent fc8c49926c
commit f4c7b001ab
1 changed files with 27 additions and 8 deletions
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35
libavformat/mov.c
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@ -1196,8 +1196,33 @@ static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
#ifdef DEBUG
av_log(NULL, AV_LOG_DEBUG, "sample_size = %ld sample_count = %ld\n", sc->sample_size, sc->sample_count);
#endif
if(sc->sample_size)
if(sc->sample_size) {
/* override sample size for uncompressed sound */
switch (st->codec->codec_id) {
case CODEC_ID_PCM_S32BE:
case CODEC_ID_PCM_S32LE:
sc->sample_size = 4 * st->codec->channels;
break;
case CODEC_ID_PCM_S24BE:
case CODEC_ID_PCM_S24LE:
sc->sample_size = 3 * st->codec->channels;
break;
case CODEC_ID_PCM_S16BE:
case CODEC_ID_PCM_S16LE:
sc->sample_size = 2 * st->codec->channels;
break;
case CODEC_ID_PCM_MULAW:
case CODEC_ID_PCM_ALAW:
case CODEC_ID_PCM_S8:
case CODEC_ID_PCM_U8:
sc->sample_size = 1 * st->codec->channels;
break;
default:
break;
}
assert(sc->sample_size);
return 0; /* there isn't any table following */
}
sc->sample_sizes = (long*) av_malloc(entries * sizeof(long));
if (!sc->sample_sizes)
return -1;
@ -1768,13 +1793,7 @@ again:
for(i=0; i<(sc->sample_to_chunk_sz); i++) {
if( (sc->sample_to_chunk[i].first)<=(sc->next_chunk) )
{
// I can't figure out why for PCM audio sample_size is always 1
// (it should actually be channels*bits_per_second/8) but it is.
AVCodecContext* cod = s->streams[sc->ffindex]->codec;
if (sc->sample_size == 1 && (cod->codec_id == CODEC_ID_PCM_S16BE || cod->codec_id == CODEC_ID_PCM_S16LE))
foundsize=(sc->sample_to_chunk[i].count*cod->channels*cod->bits_per_sample)/8;
else
foundsize=sc->sample_to_chunk[i].count*sc->sample_size;
foundsize=sc->sample_to_chunk[i].count*sc->sample_size;
}
dprintf("sample_to_chunk first=%ld count=%ld, id=%ld\n", sc->sample_to_chunk[i].first, sc->sample_to_chunk[i].count, sc->sample_to_chunk[i].id);
}