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write exact values for audio stsd v1

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Originally committed as revision 5606 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Baptiste Coudurier 2006-07-04 14:03:59 +00:00
parent 693caa725d
commit 5cb49ca11b
1 changed files with 41 additions and 41 deletions
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82
libavformat/movenc.c
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@ -52,6 +52,7 @@ typedef struct MOVIndex {
int64_t trackDuration;
long sampleCount;
long sampleDuration;
long sampleSize;
int hasKeyframes;
int hasBframes;
int language;
@ -385,15 +386,15 @@ static int mov_write_audio_tag(ByteIOContext *pb, MOVTrack* track)
put_be16(pb, track->timescale); /* Time scale */
put_be16(pb, 0); /* Reserved */
if(version == 1) {
/* SoundDescription V1 extended info */
put_be32(pb, track->enc->frame_size); /* Samples per packet */
if(version == 1) { /* SoundDescription V1 extended info */
/* Parameters tested on quicktime 6.5, 7 */
put_be32(pb, 1); /* Bytes per packet */
/* FIXME not correct */
/* 8 is the min value needed for in32 to work with quicktime 6.5 */
/* Value ignored by other codecs currently supported (others might need it) */
put_be32(pb, 8); /* Bytes per frame */
if (track->enc->codec_id == CODEC_ID_MP3)
track->sampleSize = 666;
if (track->enc->codec_id == CODEC_ID_AAC)
track->sampleSize = 2;
put_be32(pb, track->enc->frame_size); /* Samples per packet */
put_be32(pb, track->sampleSize / 2); /* Bytes per packet */
put_be32(pb, track->sampleSize); /* Bytes per frame */
put_be32(pb, 2); /* Bytes per sample */
}
@ -1477,6 +1478,27 @@ static int mov_write_header(AVFormatContext *s)
}else if(st->codec->codec_type == CODEC_TYPE_AUDIO){
track->tag = mov_find_audio_codec_tag(s, track);
av_set_pts_info(st, 64, 1, st->codec->sample_rate);
switch (st->codec->codec_id) {
case CODEC_ID_PCM_MULAW:
case CODEC_ID_PCM_ALAW:
track->sampleSize = 1 * st->codec->channels;
break;
case CODEC_ID_PCM_S16BE:
case CODEC_ID_PCM_S16LE:
track->sampleSize = 2 * st->codec->channels;
break;
case CODEC_ID_PCM_S24BE:
case CODEC_ID_PCM_S24LE:
track->sampleSize = 3 * st->codec->channels;
break;
case CODEC_ID_PCM_S32BE:
case CODEC_ID_PCM_S32LE:
track->sampleSize = 4 * st->codec->channels;
break;
default:
track->sampleSize = 0;
}
}
track->language = ff_mov_iso639_to_lang(st->language, mov->mode != MODE_MOV);
track->mode = mov->mode;
@ -1503,42 +1525,20 @@ static int mov_write_packet(AVFormatContext *s, AVPacket *pkt)
if (url_is_streamed(&s->pb)) return 0; /* Can't handle that */
if (!size) return 0; /* Discard 0 sized packets */
if (enc->codec_type == CODEC_TYPE_AUDIO) {
switch (enc->codec_id) {
case CODEC_ID_AMR_NB:
{ /* We must find out how many AMR blocks there are in one packet */
static uint16_t packed_size[16] =
{13, 14, 16, 18, 20, 21, 27, 32, 6, 0, 0, 0, 0, 0, 0, 0};
int len = 0;
if (enc->codec_type == CODEC_ID_AMR_NB) {
/* We must find out how many AMR blocks there are in one packet */
static uint16_t packed_size[16] =
{13, 14, 16, 18, 20, 21, 27, 32, 6, 0, 0, 0, 0, 0, 0, 0};
int len = 0;
while (len < size && samplesInChunk < 100) {
len += packed_size[(pkt->data[len] >> 3) & 0x0F];
samplesInChunk++;
}
}
break;
case CODEC_ID_PCM_MULAW:
case CODEC_ID_PCM_ALAW:
samplesInChunk = size/enc->channels;
break;
case CODEC_ID_PCM_S16BE:
case CODEC_ID_PCM_S16LE:
samplesInChunk = size/(2*enc->channels);
break;
case CODEC_ID_PCM_S24BE:
case CODEC_ID_PCM_S24LE:
samplesInChunk = size/(3*enc->channels);
break;
case CODEC_ID_PCM_S32BE:
case CODEC_ID_PCM_S32LE:
samplesInChunk = size/(4*enc->channels);
break;
default:
samplesInChunk = 1;
while (len < size && samplesInChunk < 100) {
len += packed_size[(pkt->data[len] >> 3) & 0x0F];
samplesInChunk++;
}
} else {
} else if (trk->sampleSize)
samplesInChunk = size/trk->sampleSize;
else
samplesInChunk = 1;
}
/* copy extradata if it exists */
if (trk->vosLen == 0 && enc->extradata_size > 0) {