public void Play()
{
if (firstPlay)
{
outstream.Start();
firstPlay = false;
}
else
{
outstream.ClearBuffer();
}
isPaused = false;
}
public static int Main(string[] args)
{
string exe = "SoundIOSine";
SoundIoBackend backend = SoundIoBackend.None;
string deviceId = null;
bool raw = false;
string streamName = null;
double latency = 0.0;
int sampleRate = 0;
SoundIoError err;
SoundIODevice device = null;
for (int i = 0; i < args.Length; i++)
{
string arg = args[i];
if (arg.StartsWith("--"))
{
if (arg.CompareTo("--raw") == 0)
{
raw = true;
}
else
{
i++;
if (i >= args.Length)
{
return(Usage(exe));
}
else if (arg.CompareTo("--backend") == 0)
{
backend = (SoundIoBackend)Enum.Parse(typeof(SoundIoBackend), args[i]);
}
else if (arg.CompareTo("--device") == 0)
{
deviceId = args[i];
}
else if (arg.CompareTo("--name") == 0)
{
streamName = args[i];
}
else if (arg.CompareTo("--latency") == 0)
{
latency = double.Parse(args[i]);
}
else if (arg.CompareTo("--sample-rate") == 0)
{
sampleRate = int.Parse(args[i]);
}
else
{
return(Usage(exe));
}
}
}
else
{
return(Usage(exe));
}
}
SoundIO soundIo = new SoundIO();
err = (backend == SoundIoBackend.None) ?
soundIo.Connect() : soundIo.ConnectBackend(backend);
if (err != SoundIoError.None)
{
Console.Error.WriteLine("Unable to connect to backend: {0}.", err.GetErrorMessage());
return(1);
}
Console.WriteLine("Backend: {0}.", soundIo.CurrentBackend);
soundIo.FlushEvents();
if (deviceId != null)
{
foreach (var dev in soundIo)
{
if (dev.Aim == SoundIoDeviceAim.Output && dev.Id.Equals(deviceId) && dev.IsRaw == raw)
{
device = dev;
break;
}
}
if (device == null)
{
Console.Error.WriteLine("Output device not found.");
return(1);
}
device.AddRef(); // Enumerator cleans up itself on dispose
}
else
{
device = soundIo.GetDefaultOutputDevice();
}
Console.WriteLine("Output device: {0}.", device.Name);
if (device.ProbeError != SoundIoError.None)
{
Console.Error.WriteLine("Cannot probe device: {0}.", device.ProbeError.GetErrorMessage());
return(1);
}
SoundIOOutStream outstream = new SoundIOOutStream(device);
outstream.OnWriteCallback = WriteCallback;
outstream.OnUnderflowCallback = UnderflowCallback;
if (streamName != null)
{
outstream.Name = streamName;
}
outstream.SoftwareLatency = latency;
if (sampleRate != 0)
{
outstream.SampleRate = sampleRate;
}
if (device.SupportsFormat(SoundIoFormats.Float32NE))
{
outstream.Format = SoundIoFormats.Float32NE;
writeSample = WriteSampleFloat32NE;
}
else if (device.SupportsFormat(SoundIoFormats.Float64NE))
{
outstream.Format = SoundIoFormats.Float64NE;
writeSample = WriteSampleFloat64NE;
}
else if (device.SupportsFormat(SoundIoFormats.S32NE))
{
outstream.Format = SoundIoFormats.S32NE;
writeSample = WriteSampleS32NE;
}
else if (device.SupportsFormat(SoundIoFormats.S16NE))
{
outstream.Format = SoundIoFormats.S16NE;
writeSample = WriteSampleS16NE;
}
else
{
Console.Error.WriteLine("No suitable format available.");
return(1);
}
err = outstream.Open();
if (err != SoundIoError.None)
{
Console.Error.WriteLine("Unable to open device: {0}.", err.GetErrorMessage());
return(1);
}
Console.WriteLine("Software latency: {0:N6}.", outstream.SoftwareLatency);
Console.WriteLine(
"\t'p' - pause\n" +
"\t'u' - unpause\n" +
"\t'P' - pause from within callback\n" +
"\t'c' - clear buffer\n" +
"\t'q' - quit\n");
if (outstream.LayoutError != SoundIoError.None)
{
Console.Error.WriteLine("Unable to set channel layout: {0}.", outstream.LayoutError.GetErrorMessage());
}
err = outstream.Start();
if (err != SoundIoError.None)
{
Console.Error.WriteLine("Unable to start device {0}.", err.GetErrorMessage());
return(1);
}
while (true)
{
soundIo.FlushEvents();
int c = Console.Read();
if (c == 'p')
{
err = outstream.Pause(true);
Console.Error.WriteLine("Pausing result: {0}.", err.GetErrorMessage());
}
else if (c == 'P')
{
wantPause = true;
}
else if (c == 'u')
{
wantPause = false;
err = outstream.Pause(false);
Console.Error.WriteLine("Unpausing result: {0}.", err.GetErrorMessage());
}
else if (c == 'c')
{
err = outstream.ClearBuffer();
Console.Error.WriteLine("Clear buffer result: {0}.", err.GetErrorMessage());
}
else if (c == 'q')
{
break;
}
else if (c == '\r' || c == '\n')
{
// ignore
}
else
{
Console.Error.WriteLine("Unrecognized command: {0}.", (char)c);
}
}
outstream.Dispose();
device.Release();
soundIo.Dispose();
return(0);
}