/// <summary>
/// Initialises the WaveOut device
/// </summary>
/// <param name="waveProvider">WaveProvider to play</param>
public void Init(IWaveProvider waveProvider)
{
if (playbackState != PlaybackState.Stopped)
{
throw new InvalidOperationException("Can't re-initialize during playback");
}
if (_connectionHandle != IntPtr.Zero)
{
// normally we don't allow calling Init twice, but as experiment, see if we can clean up and go again
// try to allow reuse of this waveOut device
// n.b. risky if Playback thread has not exited
DisposeBuffers();
CloseWaveOut();
}
_waveStream = waveProvider;
_bufferSize =
waveProvider.WaveFormat.ConvertLatencyToByteSize(
(DesiredLatency + NumberOfBuffers - 1) / NumberOfBuffers);
_buffer = new byte[_bufferSize];
lock (waveOutLock)
{
var sampleSpec = FormatConverter.Convert(_waveStream.WaveFormat);
ChannelMap?channelMap = null;
BufferAttr?bufferAttr = null;
_connectionHandle = _api.pa_simple_new(
_connection.ServerName,
_connection.ApplicationName,
StreamDirection.Playback,
_connection.Device,
_connection.StreamName,
ref sampleSpec,
ref channelMap,
ref bufferAttr,
out var error
);
if (_connectionHandle == IntPtr.Zero)
{
throw new Exception("pa_simple_new error");
}
}
playbackState = PlaybackState.Stopped;
}
private void OpenWaveInDevice()
{
CloseWaveInDevice();
var sampleSpec = FormatConverter.Convert(WaveFormat);
ChannelMap?channelMap = null;
BufferAttr?bufferAttributes = null;
_connectionHandle = _api.pa_simple_new(
_connection.ServerName,
_connection.ApplicationName,
StreamDirection.Record,
_connection.Device,
_connection.StreamName,
ref sampleSpec,
ref channelMap,
ref bufferAttributes,
out var error
);
if (_connectionHandle == IntPtr.Zero)
{
throw new Exception("Not able to create recording pulseAudio connection");
}
}