void
STSDAtom::ReadDecoderConfig(uint8 **pDecoderConfig, size_t *pDecoderConfigSize,
AudioDescription *pAudioDescription, VideoDescription *pVideoDescription)
{
// Check for a Decoder Config and if it exists copy it back to the caller
// MPEG-4 video/audio use the various decoder config structures to pass
// additional decoder information to the decoder. The extractor sometimes
// needs to decode the data to work out how to properly construct the
// decoder
// First make sure we have a something
if (GetBytesRemaining() > 0) {
// Well something is there so read it as an atom
AtomBase *aAtomBase = GetAtom(theStream);
aAtomBase->ProcessMetaData();
printf("%s [%Ld]\n",aAtomBase->GetAtomName(),aAtomBase->GetAtomSize());
if (dynamic_cast<DecoderConfigAtom *>(aAtomBase)) {
// DecoderConfig atom good
DecoderConfigAtom *aDecoderConfigAtom =
dynamic_cast<DecoderConfigAtom *>(aAtomBase);
aDecoderConfigAtom->OverrideAudioDescription(pAudioDescription);
aDecoderConfigAtom->OverrideVideoDescription(pVideoDescription);
delete aAtomBase;
} else {
// Unknown atom bad
printf("Unknown atom %s\n",aAtomBase->GetAtomName());
delete aAtomBase;
}
}
}
