void HevcSampleEntry::parseBox(BitStream& bitstr)
{
VisualSampleEntryBox::parseBox(bitstr);
while (bitstr.numBytesLeft() > 0)
{
// Extract contained box bitstream and type
std::string boxType;
BitStream subBitStream = bitstr.readSubBoxBitStream(boxType);
// Handle this box based on the type
if (boxType == "hvcC")
{
mHevcConfigurationBox.parseBox(subBitStream);
}
else if (boxType == "ccst")
{
mCodingConstraintsBox.parseBox(subBitStream);
mIsCodingConstraintsPresent = true;
}
else
{
logWarning() << "Skipping unknown box of type '" << boxType << "' inside HevcSampleEntry" << std::endl;
}
}
}
void ItemPropertiesBox::parseBox(BitStream& input)
{
parseBoxHeader(input);
std::string subBoxType;
BitStream subBitStream = input.readSubBoxBitStream(subBoxType);
mContainer.parseBox(subBitStream);
subBitStream = input.readSubBoxBitStream(subBoxType);
if (subBoxType != "ipma")
{
throw std::runtime_error("ItemPropertiesBox includes a box which is not ipma");
}
// There could be several ItemPropertyAssociation boxes, but currently only one is supported.
mAssociations.parseBox(subBitStream);
if (input.numBytesLeft() > 0)
{
logWarning() << "ItemPropertiesBox::parseBox() supports currently only one ipma box, but there seems to be more." << std::endl;
}
}
void SampleTableBox::parseBox(BitStream& bitstr)
{
// First parse the box header
parseBoxHeader(bitstr);
// if there a data available in the file
while (bitstr.numBytesLeft() > 0)
{
// Extract contained box bitstream and type
std::string boxType;
BitStream subBitstr = bitstr.readSubBoxBitStream(boxType);
// Handle this box based on the type
if (boxType == "stsd")
{
mSampleDescriptionBox.parseBox(subBitstr);
}
else if (boxType == "stco" || boxType == "co64") // 'co64' is the 64-bit version
{
mChunkOffsetBox.parseBox(subBitstr);
}
else if (boxType == "stsz")
{
mSampleSizeBox.parseBox(subBitstr);
}
else if (boxType == "stts")
{
mTimeToSampleBox.parseBox(subBitstr);
}
else if (boxType == "stsc")
{
mSampleToChunkBox.parseBox(subBitstr);
}
else if (boxType == "stss")
{
mSyncSampleBox = std::make_shared<SyncSampleBox>();
mSyncSampleBox->parseBox(subBitstr);
}
else if (boxType == "sgpd")
{
auto sgdb = new SampleGroupDescriptionBox;
sgdb->parseBox(subBitstr);
mSampleGroupDescriptionBox.reset(sgdb);
}
else if (boxType == "sbgp")
{
SampleToGroupBox sampleToGroupBox;
sampleToGroupBox.parseBox(subBitstr);
mSampleToGroupBox.push_back(move(sampleToGroupBox));
}
else if (boxType == "cslg")
{
mCompositionToDecodeBox = std::make_shared<CompositionToDecodeBox>();
mCompositionToDecodeBox->parseBox(subBitstr);
}
else if (boxType == "ctts")
{
mCompositionOffsetBox = std::make_shared<CompositionOffsetBox>();
mCompositionOffsetBox->parseBox(subBitstr);
}
else
{
logWarning() << "Skipping unknown box of type '" << boxType << "' inside SampleTableBox" << endl;
}
}
// We need to update stsc decoded presentation of chunk entries.
mSampleToChunkBox.decodeEntries(mChunkOffsetBox.getChunkOffsets().size());
}
