/// <summary>
/// Callback function for the outputstream.
/// </summary>
/// <param name="streamHandle">Bass stream handle that requests sample data.</param>
/// <param name="buffer">Buffer to write the sampledata in.</param>
/// <param name="requestedBytes">Requested number of bytes.</param>
/// <param name="userData"></param>
/// <returns>Number of bytes read.</returns>
private int OutputStreamWriteProc(int streamHandle, IntPtr buffer, int requestedBytes, IntPtr userData)
{
if (_deviceState == DeviceState.Stopped)
{
return((int)BASSStreamProc.BASS_STREAMPROC_END);
}
if (_outputStreamEnded)
{
return((int)BASSStreamProc.BASS_STREAMPROC_END);
}
int read = _inputStream.Read(buffer, requestedBytes);
if (read == -1)
{
// We're done!
// Play silence until playback has stopped to avoid any buffer underruns.
read = _silence.Write(buffer, requestedBytes);
// Set a flag so we call HandleOutputStreamEnded() only once.
_outputStreamEnded = true;
// Our input stream is finished, wait for device to end playback
HandleOutputStreamAboutToEnd();
}
return(read);
}
protected virtual int WriteOutputStream(IntPtr buffer, int requestedBytes)
{
if (_deviceState == DeviceState.Stopped || _outputStreamEnded)
{
return((int)BASSStreamProc.BASS_STREAMPROC_END);
}
int read = ReadStream.Read(buffer, requestedBytes);
if (read != -1)
{
return(read);
}
// We're done!
// Play silence until playback has stopped to avoid any buffer underruns.
read = _silence.Write(buffer, requestedBytes);
// Set a flag so we call HandleOutputStreamEnded() only once.
_outputStreamEnded = true;
// Our input stream is finished, wait for device to end playback
HandleOutputStreamAboutToEnd();
return(read);
}
/// <summary>
/// Callback function for the visualization stream.
/// </summary>
/// <param name="streamHandle">Bass stream handle that requests sample data.</param>
/// <param name="buffer">Buffer to write the sampledata to.</param>
/// <param name="requestedBytes">Requested number of bytes.</param>
/// <param name="userData">Not used.</param>
/// <returns>Number of bytes read.</returns>
private int VizRawStreamWriteProc(int streamHandle, IntPtr buffer, int requestedBytes, IntPtr userData)
{
if (buffer == IntPtr.Zero)
{
return(0);
}
if (_controller.Player.ExternalState == PlayerState.Active)
{
int read = _buffer.Peek(buffer, requestedBytes / BassConstants.FloatBytes, _vizReadOffsetBytes);
return((read == 0 && _streamEnded) ? (int)BASSStreamProc.BASS_STREAMPROC_END : read *BassConstants.FloatBytes);
}
return(_silence.Write(buffer, requestedBytes));
}
