void ASIODeviceControlLoad(object sender, EventArgs e)
{
int deviceCount = PortAudio.Pa_GetDeviceCount();
Console.WriteLine("Device count: " + paHostApiInfo.deviceCount + " default input device: " + paHostApiInfo.defaultInputDevice);
deviceComboBox.Items.Clear();
for (int i = 0; i < deviceCount; i++)
{
PortAudio.PaDeviceInfo paDeviceInfo = PortAudio.Pa_GetDeviceInfo(i);
PortAudio.PaHostApiInfo paHostApi = PortAudio.Pa_GetHostApiInfo(paDeviceInfo.hostApi);
if (paHostApi.type == PortAudio.PaHostApiTypeId.paASIO)
{
Console.WriteLine("\n#" + i + "\n" + paDeviceInfo);
if (paDeviceInfo.maxOutputChannels > 0)
{
deviceComboBox.Items.Add(new DeviceItem(i, paDeviceInfo));
if (i == paHostApiInfo.defaultOutputDevice)
{
deviceComboBox.SelectedIndex = deviceComboBox.Items.Count - 1;
}
}
}
}
bufferSizeComboBox.Items.Clear();
int bufferSize = 256;
while (bufferSize < 44100 / 2)
{
bufferSizeComboBox.Items.Add(bufferSize);
bufferSize *= 2;
}
bufferSizeComboBox.SelectedIndex = 2;
}
public PortAudioPlayer(int channels, int frequency, uint framesPerBuffer,
PortAudio.PaStreamCallbackDelegate paStreamCallback)
{
log("Initializing...");
this.channels = channels;
this.frequency = frequency;
this.framesPerBuffer = framesPerBuffer;
this.paStreamCallback = paStreamCallback;
if (errorCheck("Initialize", PortAudio.Pa_Initialize()))
{
this.disposed = true;
// if Pa_Initialize() returns an error code,
// Pa_Terminate() should NOT be called.
throw new Exception("Can't initialize audio");
}
int apiCount = PortAudio.Pa_GetHostApiCount();
for (int i = 0; i < apiCount; i++)
{
PortAudio.PaHostApiInfo availableApiInfo = PortAudio.Pa_GetHostApiInfo(i);
log("available API index: " + i + "\n" + availableApiInfo.ToString());
}
this.hostApi = apiSelect();
log("selected Host API: " + this.hostApi);
this.apiInfo = PortAudio.Pa_GetHostApiInfo(this.hostApi);
this.inputDeviceInfo = PortAudio.Pa_GetDeviceInfo(apiInfo.defaultInputDevice);
this.outputDeviceInfo = PortAudio.Pa_GetDeviceInfo(apiInfo.defaultOutputDevice);
log("input device:\n" + inputDeviceInfo.ToString());
log("output device:\n" + outputDeviceInfo.ToString());
}
private int apiSelect()
{
int selectedHostApi = PortAudio.Pa_GetDefaultHostApi();
int apiCount = PortAudio.Pa_GetHostApiCount();
for (int i = 0; i < apiCount; i++)
{
PortAudio.PaHostApiInfo apiInfo = PortAudio.Pa_GetHostApiInfo(i);
if ((apiInfo.type == PortAudio.PaHostApiTypeId.paDirectSound) ||
(apiInfo.type == PortAudio.PaHostApiTypeId.paOSS))
{
selectedHostApi = i;
}
}
return(selectedHostApi);
}
/// <summary>
/// Selects the most appropriate host api
/// </summary>
/// <returns>The most appropriate host api</returns>
public int GetHostApi()
{
if (_Disposed)
{
throw new ObjectDisposedException("PortAudioHandle already disposed");
}
int selectedHostApi = PortAudio.Pa_GetDefaultHostApi();
int apiCount = PortAudio.Pa_GetHostApiCount();
for (int i = 0; i < apiCount; i++)
{
PortAudio.PaHostApiInfo apiInfo = PortAudio.Pa_GetHostApiInfo(i);
if ((apiInfo.type == PortAudio.PaHostApiTypeId.paDirectSound) ||
(apiInfo.type == PortAudio.PaHostApiTypeId.paALSA))
{
selectedHostApi = i;
}
}
return(selectedHostApi);
}
void AudioSettingsControlLoad(object sender, EventArgs e)
{
driverTypeComboBox.Items.Clear();
int hostApiCount = PortAudio.Pa_GetHostApiCount();
for (int i = 0; i < hostApiCount; i++)
{
PortAudio.PaHostApiInfo hostApiInfo = PortAudio.Pa_GetHostApiInfo(i);
if (hostApiInfo.type != PortAudio.PaHostApiTypeId.paInDevelopment)
{
driverTypeComboBox.Items.Add(new HostApiItem(hostApiInfo));
}
}
driverTypeComboBox.SelectedIndex = PortAudio.Pa_GetDefaultHostApi();
sampleRateComboBox.Items.Clear();
sampleRateComboBox.Items.Add(192000);
sampleRateComboBox.Items.Add(176400);
sampleRateComboBox.Items.Add(96000);
sampleRateComboBox.Items.Add(88200);
sampleRateComboBox.Items.Add(48000);
sampleRateComboBox.Items.Add(44100);
sampleRateComboBox.Items.Add(38400);
sampleRateComboBox.Items.Add(37800);
sampleRateComboBox.Items.Add(32000);
sampleRateComboBox.Items.Add(24000);
sampleRateComboBox.Items.Add(22050);
sampleRateComboBox.Items.Add(19200);
sampleRateComboBox.Items.Add(18900);
sampleRateComboBox.Items.Add(16000);
sampleRateComboBox.Items.Add(12000);
sampleRateComboBox.Items.Add(11025);
sampleRateComboBox.Items.Add(9600);
sampleRateComboBox.Items.Add(8000);
sampleRateComboBox.SelectedIndex = 5;
}
public int Open(string FileName)
{
if (_FileOpened)
{
return(-1);
}
if (!System.IO.File.Exists(FileName))
{
return(-1);
}
if (_FileOpened)
{
return(-1);
}
_Decoder = new CAudioDecoderFFmpeg();
_Decoder.Init();
try
{
if (errorCheck("Initialize", PortAudio.Pa_Initialize()))
{
return(-1);
}
_Initialized = true;
int hostApi = apiSelect();
_apiInfo = PortAudio.Pa_GetHostApiInfo(hostApi);
_outputDeviceInfo = PortAudio.Pa_GetDeviceInfo(_apiInfo.defaultOutputDevice);
_paStreamCallback = new PortAudio.PaStreamCallbackDelegate(_PaStreamCallback);
if (_outputDeviceInfo.defaultLowOutputLatency < 0.1)
{
_outputDeviceInfo.defaultLowOutputLatency = 0.1;
}
}
catch (Exception)
{
_Initialized = false;
CLog.LogError("Error Init PortAudio Playback");
return(-1);
}
_FileName = FileName;
_Decoder.Open(FileName);
_Duration = _Decoder.GetLength();
FormatInfo format = _Decoder.GetFormatInfo();
_ByteCount = 2 * format.ChannelCount;
_BytesPerSecond = format.SamplesPerSecond * _ByteCount;
_CurrentTime = 0f;
_SyncTimer.Time = _CurrentTime;
AudioStreams stream = new AudioStreams(0);
IntPtr data = new IntPtr(0);
PortAudio.PaStreamParameters outputParams = new PortAudio.PaStreamParameters();
outputParams.channelCount = format.ChannelCount;
outputParams.device = _apiInfo.defaultOutputDevice;
outputParams.sampleFormat = PortAudio.PaSampleFormat.paInt16;
outputParams.suggestedLatency = _outputDeviceInfo.defaultLowOutputLatency;
errorCheck("OpenDefaultStream", PortAudio.Pa_OpenStream(
out _Ptr,
IntPtr.Zero,
ref outputParams,
format.SamplesPerSecond,
(uint)CConfig.AudioBufferSize,
PortAudio.PaStreamFlags.paNoFlag,
_paStreamCallback,
data));
stream.handle = _Ptr.ToInt32();
if (stream.handle != 0)
{
_Paused = true;
_waiting = true;
_FileOpened = true;
_data = new RingBuffer(BUFSIZE);
_NoMoreData = false;
_DecoderThread.Priority = ThreadPriority.Normal;
_DecoderThread.Name = Path.GetFileName(FileName);
_DecoderThread.Start();
return(stream.handle);
}
return(-1);
}
