private static int GetDataLength(ChannelDataFlags flags)
{
switch (flags)
{
case ChannelDataFlags.FFT512:
return 256;
case ChannelDataFlags.FFT1024:
return 512;
case ChannelDataFlags.FFT2048:
return 1024;
case ChannelDataFlags.SFFT512:
return 512;
case ChannelDataFlags.SFFT1024:
return 1024;
case ChannelDataFlags.SFFT2048:
return 2048;
default:
return 1024;
}
}
//// Remove a sync from a channel
//// handle : channel handle(HMUSIC/HSTREAM)
//// sync : Handle of sync to remove
//[DllImport("bass.dll", EntryPoint = "BASS_ChannelRemoveSync")]
//private static extern int _RemoveSync(IntPtr handle, IntPtr sync); // OK retrun bool
//// Retrieves upto "length" bytes of the channel//s current sample data. This is
//// useful if you wish to "visualize" the sound.
//// handle: Channel handle(HMUSIC / HSTREAM, or RECORDCHAN)
//// buffer : Location to write the data
//// length : Number of bytes wanted, or a BASS_DATA_xxx flag
//// RETURN : Number of bytes actually written to the buffer (-1=error)
//[DllImport("bass.dll", EntryPoint = "BASS_ChannelGetData")]
//private static extern int _GetData(IntPtr handle, float[] buffer, int Length); // OK return dword
/// <summary>
/// Retrieves upto "length" bytes of the channel//s current sample data. This is
/// useful if you wish to "visualize" the sound.
/// </summary>
/// <param name="buffer">A buffer to place retrieved data</param>
/// <param name="flags">ChannelDataFlags</param>
public int GetData([NotNull] float[] buffer, ChannelDataFlags flags)
{
if (_disposed)
throw new ObjectDisposedException(ToString());
int output = Bass.BASS_ChannelGetData(Handle, buffer, (int) flags);
if (output < 0) throw new BASSException();
return output;
}
