/**
* <summary>audioFileStream must be initialized prior to passing
* dataFileStream must be open prior to passing</summary>
*/
public NLSBSteganographerEncoder(FileInDecodingStream audioFileStream, Stream dataFileStream, byte[] key, int dataFileSize)
{
if ((audioFileStream.GetTotalSamples() * audioFileStream.GetChannels()) < ((uint)dataFileSize * 8))
{
throw new InsufficientAudioException();
}
AudioFileStream = audioFileStream;
AudioFileStream.MetadataCallback = MetadataCallback;
DataFileStream = dataFileStream;
for (int i = 0; i < dataFileSize * 8; i++)
{
BitPermutationIndices.Add(i);
}
Rng = new KeyedRng(key);
}
private void WriteCallback(int[] toWrite)
{
AudioFileOutStream.ProcessInterleaved(toWrite, (uint)toWrite.Length / AudioFileInStream.GetChannels());
}