public static Fin <Unit> WriteTotalSamples(FileStream stream, ulong sampleCount)
{
stream.Seek(FlacSamplesOffset, SeekOrigin.Begin);
// we're writing over the top of other bits, so read first
Span <byte> buffer = stackalloc byte[5];
int bytesRead = stream.Read(buffer);
if (bytesRead != buffer.Length)
{
return(FileTooShort);
}
// flac files have an unsigned 36-bit integer for total sample duration!
BinaryHelpers.Write36BitUnsignedBigEndianIgnoringFirstNibble(buffer, sampleCount);
stream.Seek(FlacSamplesOffset, SeekOrigin.Begin);
stream.Write(buffer);
return(Unit.Default);
}