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mov: Refactor codec specific final steps in mov_finalize_stsd_codec

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This commit is contained in:
Luca Barbato 2013-08-22 15:05:27 +02:00
parent dc518a3ae2
commit 08504380dd
1 changed files with 65 additions and 58 deletions
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123
libavformat/mov.c
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@ -1306,6 +1306,70 @@ static void mov_parse_stsd_subtitle(MOVContext *c, AVIOContext *pb,
st->codec->height = sc->height;
}
static int mov_finalize_stsd_codec(MOVContext *c, AVIOContext *pb,
AVStream *st, MOVStreamContext *sc)
{
if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
!st->codec->sample_rate && sc->time_scale > 1)
st->codec->sample_rate = sc->time_scale;
/* special codec parameters handling */
switch (st->codec->codec_id) {
#if CONFIG_DV_DEMUXER
case AV_CODEC_ID_DVAUDIO:
c->dv_fctx = avformat_alloc_context();
c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
if (!c->dv_demux) {
av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
return AVERROR(ENOMEM);
}
sc->dv_audio_container = 1;
st->codec->codec_id = AV_CODEC_ID_PCM_S16LE;
break;
#endif
/* no ifdef since parameters are always those */
case AV_CODEC_ID_QCELP:
st->codec->channels = 1;
// force sample rate for qcelp when not stored in mov
if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
st->codec->sample_rate = 8000;
break;
case AV_CODEC_ID_AMR_NB:
st->codec->channels = 1;
/* force sample rate for amr, stsd in 3gp does not store sample rate */
st->codec->sample_rate = 8000;
break;
case AV_CODEC_ID_AMR_WB:
st->codec->channels = 1;
st->codec->sample_rate = 16000;
break;
case AV_CODEC_ID_MP2:
case AV_CODEC_ID_MP3:
/* force type after stsd for m1a hdlr */
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->need_parsing = AVSTREAM_PARSE_FULL;
break;
case AV_CODEC_ID_GSM:
case AV_CODEC_ID_ADPCM_MS:
case AV_CODEC_ID_ADPCM_IMA_WAV:
case AV_CODEC_ID_ILBC:
st->codec->block_align = sc->bytes_per_frame;
break;
case AV_CODEC_ID_ALAC:
if (st->codec->extradata_size == 36) {
st->codec->channels = AV_RB8 (st->codec->extradata + 21);
st->codec->sample_rate = AV_RB32(st->codec->extradata + 32);
}
break;
case AV_CODEC_ID_VC1:
st->need_parsing = AVSTREAM_PARSE_FULL;
break;
default:
break;
}
return 0;
}
int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
{
AVStream *st;
@ -1389,64 +1453,7 @@ int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
if (pb->eof_reached)
return AVERROR_EOF;
if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
st->codec->sample_rate= sc->time_scale;
/* special codec parameters handling */
switch (st->codec->codec_id) {
#if CONFIG_DV_DEMUXER
case AV_CODEC_ID_DVAUDIO:
c->dv_fctx = avformat_alloc_context();
c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
if (!c->dv_demux) {
av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
return AVERROR(ENOMEM);
}
sc->dv_audio_container = 1;
st->codec->codec_id = AV_CODEC_ID_PCM_S16LE;
break;
#endif
/* no ifdef since parameters are always those */
case AV_CODEC_ID_QCELP:
// force sample rate for qcelp when not stored in mov
if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
st->codec->sample_rate = 8000;
st->codec->channels= 1; /* really needed */
break;
case AV_CODEC_ID_AMR_NB:
st->codec->channels= 1; /* really needed */
/* force sample rate for amr, stsd in 3gp does not store sample rate */
st->codec->sample_rate = 8000;
break;
case AV_CODEC_ID_AMR_WB:
st->codec->channels = 1;
st->codec->sample_rate = 16000;
break;
case AV_CODEC_ID_MP2:
case AV_CODEC_ID_MP3:
st->codec->codec_type = AVMEDIA_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
st->need_parsing = AVSTREAM_PARSE_FULL;
break;
case AV_CODEC_ID_GSM:
case AV_CODEC_ID_ADPCM_MS:
case AV_CODEC_ID_ADPCM_IMA_WAV:
case AV_CODEC_ID_ILBC:
st->codec->block_align = sc->bytes_per_frame;
break;
case AV_CODEC_ID_ALAC:
if (st->codec->extradata_size == 36) {
st->codec->channels = AV_RB8 (st->codec->extradata+21);
st->codec->sample_rate = AV_RB32(st->codec->extradata+32);
}
break;
case AV_CODEC_ID_VC1:
st->need_parsing = AVSTREAM_PARSE_FULL;
break;
default:
break;
}
return 0;
return mov_finalize_stsd_codec(c, pb, st, sc);
}
static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)