// Sets the packet table containing information about the number of valid frames in a file and where they begin and end
// for the file types that support this information.
// Calling this function makes sure we write out the priming and remainder details to the destination file
static void WritePacketTableInfo(AudioConverter converter, AudioFile destinationFile)
{
if (!destinationFile.IsPropertyWritable(AudioFileProperty.PacketTableInfo))
{
return;
}
// retrieve the leadingFrames and trailingFrames information from the converter,
AudioConverterPrimeInfo primeInfo = converter.PrimeInfo;
// we have some priming information to write out to the destination file
// The total number of packets in the file times the frames per packet (or counting each packet's
// frames individually for a variable frames per packet format) minus mPrimingFrames, minus
// mRemainderFrames, should equal mNumberValidFrames.
AudioFilePacketTableInfo?pti_n = destinationFile.PacketTableInfo;
if (pti_n == null)
{
return;
}
AudioFilePacketTableInfo pti = pti_n.Value;
// there's priming to write out to the file
// get the total number of frames from the output file
long totalFrames = pti.ValidFrames + pti.PrimingFrames + pti.RemainderFrames;
pti.PrimingFrames = primeInfo.LeadingFrames;
pti.RemainderFrames = primeInfo.TrailingFrames;
pti.ValidFrames = totalFrames - pti.PrimingFrames - pti.RemainderFrames;
destinationFile.PacketTableInfo = pti;
}
// Sets the packet table containing information about the number of valid frames in a file and where they begin and end
// for the file types that support this information.
// Calling this function makes sure we write out the priming and remainder details to the destination file
static void WritePacketTableInfo (AudioConverter converter, AudioFile destinationFile)
{
if (!destinationFile.IsPropertyWritable (AudioFileProperty.PacketTableInfo))
return;
// retrieve the leadingFrames and trailingFrames information from the converter,
AudioConverterPrimeInfo primeInfo = converter.PrimeInfo;
// we have some priming information to write out to the destination file
// The total number of packets in the file times the frames per packet (or counting each packet's
// frames individually for a variable frames per packet format) minus mPrimingFrames, minus
// mRemainderFrames, should equal mNumberValidFrames.
AudioFilePacketTableInfo? pti_n = destinationFile.PacketTableInfo;
if (pti_n == null)
return;
AudioFilePacketTableInfo pti = pti_n.Value;
// there's priming to write out to the file
// get the total number of frames from the output file
long totalFrames = pti.ValidFrames + pti.PrimingFrames + pti.RemainderFrames;
Debug.WriteLine ("Total number of frames from output file: {0}", totalFrames);
pti.PrimingFrames = primeInfo.LeadingFrames;
pti.RemainderFrames = primeInfo.TrailingFrames;
pti.ValidFrames = totalFrames - pti.PrimingFrames - pti.RemainderFrames;
destinationFile.PacketTableInfo = pti;
}
