/// <summary>
/// Init PortAudio and list record devices
/// </summary>
/// <returns>true if success</returns>
public override bool Init()
{
if (!base.Init())
{
return(false);
}
try
{
_PaHandle = new CPortAudioHandle();
int hostAPI = _PaHandle.GetHostApi();
int numDevices = PortAudioSharp.PortAudio.Pa_GetDeviceCount();
for (int i = 0; i < numDevices; i++)
{
PortAudioSharp.PortAudio.PaDeviceInfo info = PortAudioSharp.PortAudio.Pa_GetDeviceInfo(i);
if (info.hostApi == hostAPI && info.maxInputChannels > 0)
{
var dev = new CRecordDevice(i, info.name, info.name + i, info.maxInputChannels);
_Devices.Add(dev);
}
}
_RecHandle = new IntPtr[_Devices.Count];
_MyRecProc = _MyPaStreamCallback;
_Initialized = true;
}
catch (Exception e)
{
_Initialized = false;
CLog.LogError("Error initializing PortAudio: " + e.Message);
Close();
return(false);
}
return(true);
}
public override bool Open(bool prescan)
{
Debug.Assert(!_FileOpened);
if (_FileOpened)
{
return(false);
}
if (!File.Exists(_Medium))
{
Dispose();
return(false);
}
try
{
_PaHandle = new CPortAudioHandle();
int hostApi = _PaHandle.GetHostApi();
_ApiInfo = PortAudioSharp.PortAudio.Pa_GetHostApiInfo(hostApi);
_OutputDeviceInfo = PortAudioSharp.PortAudio.Pa_GetDeviceInfo(_ApiInfo.defaultOutputDevice);
if (_OutputDeviceInfo.defaultLowOutputLatency < 0.1)
{
_OutputDeviceInfo.defaultLowOutputLatency = 0.1;
}
_PaStreamCallback = _ProcessNewData;
}
catch (Exception)
{
Dispose();
CLog.Error("Error Init PortAudio Playback");
return(false);
}
_Decoder = new CAudioDecoderFFmpeg();
if (!_Decoder.Open(_Medium))
{
Dispose();
CLog.Error("Error opening audio file: " + _Medium);
return(false);
}
SFormatInfo format = _Decoder.GetFormatInfo();
if (format.SamplesPerSecond == 0)
{
Dispose();
CLog.Error("Error Init PortAudio Playback (samples=0)");
return(false);
}
Length = _Decoder.GetLength();
_ByteCount = 2 * format.ChannelCount;
_BytesPerSecond = format.SamplesPerSecond * _ByteCount;
_SyncTimer.Pause();
_SyncTimer.Time = 0f;
PortAudioSharp.PortAudio.PaStreamParameters?outputParams = new PortAudioSharp.PortAudio.PaStreamParameters
{
channelCount = format.ChannelCount,
device = _ApiInfo.defaultOutputDevice,
sampleFormat = PortAudioSharp.PortAudio.PaSampleFormat.paInt16,
suggestedLatency = _OutputDeviceInfo.defaultLowOutputLatency,
hostApiSpecificStreamInfo = IntPtr.Zero
};
if (!_PaHandle.OpenOutputStream(
out _Stream,
ref outputParams,
format.SamplesPerSecond,
(uint)CConfig.Config.Sound.AudioBufferSize / 2,
PortAudioSharp.PortAudio.PaStreamFlags.paNoFlag,
_PaStreamCallback,
IntPtr.Zero) || _Stream == IntPtr.Zero)
{
Dispose();
return(false);
}
_Latency = CConfig.Config.Sound.AudioLatency / 1000f + (float)PortAudioSharp.PortAudio.Pa_GetStreamInfo(_Stream).outputLatency;
//From now on closing the driver and the decoder is handled by the thread ONLY!
_Paused = true;
_FileOpened = true;
_Data = new CRingBuffer(_Bufsize);
_NoMoreData = false;
_DecoderThread = new Thread(_Execute)
{
Priority = ThreadPriority.Normal, Name = Path.GetFileName(_Medium)
};
_DecoderThread.Start();
return(true);
}