protected override int write(TagData tag, BinaryWriter w, string zone)
{
long counterPos;
uint counter = 0;
string vendor;
if (AdditionalFields.ContainsKey(VENDOR_METADATA_ID))
{
vendor = AdditionalFields[VENDOR_METADATA_ID];
}
else
{
// Even when no existing field, vendor field is mandatory in OGG structure
// => a file with no vendor is a FLAC file
vendor = VENDOR_DEFAULT_FLAC;
}
w.Write((uint)vendor.Length);
w.Write(Encoding.UTF8.GetBytes(vendor));
counterPos = w.BaseStream.Position;
w.Write((uint)0); // Tag counter placeholder to be rewritten in a few lines
counter = writeFrames(tag, w);
if (writeMetadataFramingBit)
{
w.Write((byte)1); // Framing bit (mandatory for OGG container)
}
// PADDING MANAGEMENT
// Write the remaining padding bytes, if any detected during initial reading
if (managePadding)
{
long paddingSizeToWrite;
if (tag.PaddingSize > -1)
{
paddingSizeToWrite = tag.PaddingSize;
}
else
{
paddingSizeToWrite = TrackUtils.ComputePaddingSize(initialPaddingOffset, initialPaddingSize, initialPaddingOffset, w.BaseStream.Position);
}
if (paddingSizeToWrite > 0)
{
for (int i = 0; i < paddingSizeToWrite; i++)
{
w.Write((byte)0);
}
}
}
long finalPos = w.BaseStream.Position;
w.BaseStream.Seek(counterPos, SeekOrigin.Begin);
w.Write(counter);
w.BaseStream.Seek(finalPos, SeekOrigin.Begin);
return((int)counter);
}
private WriteResult writePaddingBlock(BinaryWriter w, long cumulativeDelta)
{
long paddingSizeToWrite = TrackUtils.ComputePaddingSize(initialPaddingOffset, initialPaddingSize, -cumulativeDelta);
if (paddingSizeToWrite > 0)
{
w.Write(META_PADDING);
w.Write(StreamUtils.EncodeBEUInt24((uint)paddingSizeToWrite));
for (int i = 0; i < paddingSizeToWrite; i++)
{
w.Write((byte)0);
}
return(new WriteResult(WriteMode.REPLACE, 1));
}
else
{
return(new WriteResult(WriteMode.REPLACE, 0));
}
}
