/// <summary>
/// Creates a new ACM frame decompressor
/// </summary>
/// <param name="sourceFormat">The MP3 source format</param>
public AcmMp3FrameDecompressor(WaveFormat sourceFormat)
{
this.pcmFormat = AcmStream.SuggestPcmFormat(sourceFormat);
try
{
conversionStream = new AcmStream(sourceFormat, pcmFormat);
}
catch (Exception)
{
disposed = true;
GC.SuppressFinalize(this);
throw;
}
}
/// <summary>
/// Create a new WaveFormat conversion stream
/// </summary>
/// <param name="targetFormat">Desired output format</param>
/// <param name="sourceStream">Source stream</param>
public WaveFormatConversionStream(WaveFormat targetFormat, WaveStream sourceStream)
{
this.sourceStream = sourceStream;
this.targetFormat = targetFormat;
conversionStream = new AcmStream(sourceStream.WaveFormat, targetFormat);
/*try
{
// work out how many bytes the entire input stream will convert to
length = conversionStream.SourceToDest((int)sourceStream.Length);
}
catch
{
Dispose();
throw;
}*/
length = EstimateSourceToDest((int)sourceStream.Length);
position = 0;
preferredSourceReadSize = Math.Min(sourceStream.WaveFormat.AverageBytesPerSecond, conversionStream.SourceBuffer.Length);
preferredSourceReadSize -= (preferredSourceReadSize%sourceStream.WaveFormat.BlockAlign);
}
/// <summary>
/// Disposes this stream
/// </summary>
/// <param name="disposing">true if the user called this</param>
protected override void Dispose(bool disposing)
{
if (disposing)
{
// Release managed resources.
if (conversionStream != null)
{
conversionStream.Dispose();
conversionStream = null;
}
if (sourceStream != null)
{
sourceStream.Dispose();
sourceStream = null;
}
}
else
{
System.Diagnostics.Debug.Assert(false, "WaveFormatConversionStream was not disposed");
}
// Release unmanaged resources.
// Set large fields to null.
// Call Dispose on your base class.
base.Dispose(disposing);
}