public static WaveStream LoadMP3(string fileName)
{
WaveStream ret = null;
try
{
if (fileName.EndsWithEx("ogg"))
{
ret = new OggFileReader(fileName);
}
else
{
ret = new Mp3FileReader(fileName);
}
}
catch { }
return(ret);
}
/// <summary>
/// Creates an input WaveChannel
/// (Audio file reader for MP3/WAV/OGG/FLAC/WMA/AIFF/Other formats in the future)
/// </summary>
/// <param name="filename"></param>
public static WaveStream CreateInputWaveChannel(string filename)
{
WaveStream m_blockAlignedStream = null;
WaveStream m_waveReader = null;
WaveChannel32 m_waveChannel = null;
string fileExt = Path.GetExtension(filename.ToLower());
if (fileExt == MP3Extension)
{
m_waveReader = new Mp3FileReader(filename);
m_blockAlignedStream = new BlockAlignReductionStream(m_waveReader);
// Wave channel - reads from file and returns raw wave blocks
m_waveChannel = new WaveChannel32(m_blockAlignedStream);
}
else if (fileExt == WAVExtension)
{
m_waveReader = new WaveFileReader(filename);
if (m_waveReader.WaveFormat.Encoding != WaveFormatEncoding.Pcm)
{
m_waveReader = WaveFormatConversionStream.CreatePcmStream(m_waveReader);
m_waveReader = new BlockAlignReductionStream(m_waveReader);
}
if (m_waveReader.WaveFormat.BitsPerSample != 16)
{
var format = new WaveFormat(m_waveReader.WaveFormat.SampleRate,
16, m_waveReader.WaveFormat.Channels);
m_waveReader = new WaveFormatConversionStream(format, m_waveReader);
}
m_waveChannel = new WaveChannel32(m_waveReader);
}
else if (fileExt == OGGVExtension)
{
m_waveReader = new OggFileReader(filename);
if (m_waveReader.WaveFormat.Encoding != WaveFormatEncoding.Pcm)
{
m_waveReader = WaveFormatConversionStream.CreatePcmStream(m_waveReader);
m_waveReader = new BlockAlignReductionStream(m_waveReader);
}
if (m_waveReader.WaveFormat.BitsPerSample != 16)
{
var format = new WaveFormat(m_waveReader.WaveFormat.SampleRate,
16, m_waveReader.WaveFormat.Channels);
m_waveReader = new WaveFormatConversionStream(format, m_waveReader);
}
m_waveChannel = new WaveChannel32(m_waveReader);
}
else if (fileExt == FLACExtension)
{
m_waveReader = new FLACFileReader(filename);
if (m_waveReader.WaveFormat.Encoding != WaveFormatEncoding.Pcm)
{
m_waveReader = WaveFormatConversionStream.CreatePcmStream(m_waveReader);
m_waveReader = new BlockAlignReductionStream(m_waveReader);
}
if (m_waveReader.WaveFormat.BitsPerSample != 16)
{
var format = new WaveFormat(m_waveReader.WaveFormat.SampleRate,
16, m_waveReader.WaveFormat.Channels);
m_waveReader = new WaveFormatConversionStream(format, m_waveReader);
}
m_waveChannel = new WaveChannel32(m_waveReader);
}
else if (fileExt == WMAExtension)
{
m_waveReader = new WMAFileReader(filename);
if (m_waveReader.WaveFormat.Encoding != WaveFormatEncoding.Pcm)
{
m_waveReader = WaveFormatConversionStream.CreatePcmStream(m_waveReader);
m_waveReader = new BlockAlignReductionStream(m_waveReader);
}
if (m_waveReader.WaveFormat.BitsPerSample != 16)
{
var format = new WaveFormat(m_waveReader.WaveFormat.SampleRate,
16, m_waveReader.WaveFormat.Channels);
m_waveReader = new WaveFormatConversionStream(format, m_waveReader);
}
m_waveChannel = new WaveChannel32(m_waveReader);
}
else if (fileExt == AIFFExtension)
{
m_waveReader = new AiffFileReader(filename);
m_waveChannel = new WaveChannel32(m_waveReader);
}
else
{
throw new ApplicationException("Cannot create Input WaveChannel - Unknown file type: " + fileExt);
}
//return m_waveReader;
return(m_waveChannel);
}
