private static WaveStream CreateInputStream(string fileName)
{
WaveChannel32 inputStream;
WaveStream readerStream = null;
if (fileName.EndsWith(".wav"))
{
readerStream = new WaveFileReader(fileName);
}
else if (fileName.EndsWith(".wma"))
{
// readerStream = new WMAFileReader2(fileName);
MemoryStream memoryStream = new MemoryStream();
using (FileStream infile = new FileStream(fileName, FileMode.Open, FileAccess.Read))
{
while (infile.Position < infile.Length)
{
byte data = (byte)infile.ReadByte();
memoryStream.WriteByte(data);
}
}
memoryStream.Position = 0;
readerStream = new WMAFileReader2(memoryStream);
}
else
{
throw new InvalidOperationException("Unsupported extension");
}
// Provide PCM conversion if needed
if (readerStream.WaveFormat.Encoding != WaveFormatEncoding.Pcm)
{
readerStream = WaveFormatConversionStream.CreatePcmStream(readerStream);
readerStream = new BlockAlignReductionStream(readerStream);
}
// Provide conversion to 16 bits if needed
if (readerStream.WaveFormat.BitsPerSample != 16)
{
var format = new WaveFormat(readerStream.WaveFormat.SampleRate,
16, readerStream.WaveFormat.Channels);
readerStream = new WaveFormatConversionStream(format, readerStream);
}
inputStream = new WaveChannel32(readerStream);
return(inputStream);
}
private static WaveStream CreateInputStream(string fileName)
{
WaveChannel32 inputStream;
WaveStream readerStream = null;
if (fileName.EndsWith(".wav"))
{
readerStream = new WaveFileReader(fileName);
}
else if (fileName.EndsWith(".wma"))
{
// readerStream = new WMAFileReader2(fileName);
MemoryStream memoryStream = new MemoryStream();
using ( FileStream infile = new FileStream(fileName, FileMode.Open, FileAccess.Read) )
{
while (infile.Position < infile.Length)
{
byte data = (byte) infile.ReadByte();
memoryStream.WriteByte( data );
}
}
memoryStream.Position = 0;
readerStream = new WMAFileReader2(memoryStream);
}
else
{
throw new InvalidOperationException("Unsupported extension");
}
// Provide PCM conversion if needed
if (readerStream.WaveFormat.Encoding != WaveFormatEncoding.Pcm)
{
readerStream = WaveFormatConversionStream.CreatePcmStream(readerStream);
readerStream = new BlockAlignReductionStream(readerStream);
}
// Provide conversion to 16 bits if needed
if (readerStream.WaveFormat.BitsPerSample != 16)
{
var format = new WaveFormat(readerStream.WaveFormat.SampleRate,
16, readerStream.WaveFormat.Channels);
readerStream = new WaveFormatConversionStream(format, readerStream);
}
inputStream = new WaveChannel32(readerStream);
return inputStream;
}
