internal static extern IntPtr SoundIoBackendName(
[In] SoundIoBackend backend
);
internal static extern bool SoundIoHaveBackend(
[In] SoundIoBackend backend
);
internal static extern bool soundio_have_backend(SoundIoBackend @backend);
internal static extern SoundIoError SoundIoConnectBackend(
[In] IntPtr soundIo,
[In] SoundIoBackend backend
);
internal static extern int soundio_connect_backend([CTypeDetails("Pointer<SoundIo>")] System.IntPtr @soundio, SoundIoBackend @backend);
internal static extern System.IntPtr soundio_backend_name(SoundIoBackend @backend);
/// <summary>
/// Attempts to connect to the specified backend.
/// </summary>
/// <param name="backend">Sound interface to connect to.</param>
/// <returns>Value indicating operation success.</returns>
public SoundIoError ConnectBackend(SoundIoBackend backend)
{
return(NativeMethods.SoundIoConnectBackend(handle, backend));
}
/// <summary>
/// Whether specified sound interface is available in the system.
/// </summary>
/// <param name="backend">Backend to validate availability for.</param>
/// <returns>Value indicating if sound interface is present in the system.</returns>
public static bool HaveBackend(SoundIoBackend backend)
{
return(NativeMethods.SoundIoHaveBackend(backend));
}
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);
}
public static int Main(string[] args)
{
int sampleRate;
string filename = null;
SoundIoBackend backend = SoundIoBackend.None;
string deviceId = null;
bool isRaw = false;
SoundIoError err;
try
{
if (args.Length < 1)
{
Usage();
return(1);
}
for (int i = 0; i < args.Length; i++)
{
string arg = args[i];
if (arg.StartsWith("--"))
{
if (++i > args.Length)
{
return(Usage());
}
else if (arg.CompareTo("--backend") == 0)
{
backend = (SoundIoBackend)Enum.Parse(typeof(SoundIoBackend), args[i]);
}
else if (arg.CompareTo("--device") == 0)
{
deviceId = args[i];
}
else
{
return(Usage());
}
}
else
{
if (File.Exists(args[i]))
{
filename = args[i];
}
else
{
Usage();
return(1);
}
}
}
if (string.IsNullOrEmpty(filename))
{
throw new Exception("Input file name can not null.");
}
}
catch (IndexOutOfRangeException)
{
Usage();
return(1);
}
using (_soundIO = new SoundIO())
{
using (_waveFile = new WaveFileReader(filename))
{
_channels = _waveFile.WaveFormat.Channels;
sampleRate = _waveFile.WaveFormat.SampleRate;
_soundIO.Connect();
_soundIO.FlushEvents();
SoundIODevice device = null;
if (deviceId != null)
{
foreach (var dev in _soundIO)
{
if (dev.Aim == SoundIoDeviceAim.Output && dev.Id.Equals(deviceId) && dev.IsRaw == isRaw)
{
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("Device: {0}.", device.Name);
if (device.ProbeError != SoundIoError.None)
{
Console.WriteLine("Cannot probe device: {0}", device.ProbeError);
return(1);
}
Console.WriteLine("Output device: {0}", device.Name);
if (device.ProbeError != SoundIoError.None)
{
Console.WriteLine("Cannot probe device: {0}", device.ProbeError);
return(1);
}
var outstream = new SoundIOOutStream(device)
{
OnWriteCallback = WriteCallback,
OnUnderflowCallback = UnderflowCallback,
Name = "sio_play",
SampleRate = sampleRate
};
// look for maching layout for wav file...
var foundLayout = false;
foreach (var layout in device.Layouts)
{
if (layout.ChannelCount == _channels)
{
outstream.Layout = layout;
foundLayout = true;
break;
}
}
// TODO: may need to look at endian issues and other formats...
// when paired with NAudioLite, ISampleProvider the conversion to Float32 is automatic.
if (device.SupportsFormat(SoundIoFormats.Float32NE))
{
outstream.Format = SoundIoFormats.Float32NE;
}
else if (device.SupportsFormat(SoundIoFormats.Float64NE))
{
outstream.Format = SoundIoFormats.Float64NE;
}
else if (device.SupportsFormat(SoundIoFormats.S32NE))
{
outstream.Format = SoundIoFormats.S32NE;
}
else if (device.SupportsFormat(SoundIoFormats.S16NE))
{
outstream.Format = SoundIoFormats.S16NE;
}
else
{
Console.WriteLine("No suitable device format available.");
return(1);
}
Console.WriteLine();
Console.WriteLine("Playing file: {0}, Format: {1}", Path.GetFullPath(filename), _waveFile.WaveFormat);
err = outstream.Open();
if (err != SoundIoError.None)
{
Console.WriteLine($"Unable to open device: {err.GetErrorMessage()}, with sample rate: {outstream.LayoutError}");
return(1);
}
if (outstream.LayoutError != SoundIoError.None)
{
Console.WriteLine($"Unable to set channel layout: {err.GetErrorMessage()}");
}
// revisit layout...
// if no suitable layout found
if (!foundLayout)
{
Console.WriteLine("No native channel layout found, Device Channels: {0}, Wav File Channels: {1}, requires sampler...", outstream.Layout.ChannelCount, _channels);
}
// get sample provider that matches outstream.Layout
if (outstream.Layout.ChannelCount == 1)
{
// mono
if (_waveFile.WaveFormat.Channels == 1)
{
_sampleProvider = _waveFile.ToSampleProvider();
}
else
{
_sampleProvider = _waveFile.ToSampleProvider().ToMono();
}
}
else if (outstream.Layout.ChannelCount == 2)
{
//stereo
if (_waveFile.WaveFormat.Channels == 1)
{
_sampleProvider = _waveFile.ToSampleProvider().ToStereo();
}
else
{
_sampleProvider = _waveFile.ToSampleProvider();
}
}
outstream.Start();
_soundIO.OnBackendDisconnect += SoundIo_OnBackendDisconnected;
while (!_fileDone)
{
System.Threading.Thread.Sleep(100);
_soundIO.FlushEvents();
}
System.Threading.Thread.Sleep(500);
if (_fileDone && outstream != null)
{
outstream.Dispose();
outstream = null;
}
Console.WriteLine("End Program");
return(0);
}
}
}
public static int Main(string[] args)
{
string exe = "SoundIORecord";
SoundIoBackend backend = SoundIoBackend.None;
string deviceId = null;
bool isRaw = true;
string outfile = "1.pcm";
SoundIoError err;
for (int i = 0; i < args.Length; i++)
{
string arg = args[i];
if (arg.StartsWith("--"))
{
if (arg.CompareTo("--raw") == 0)
{
isRaw = true;
}
else 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
{
return(Usage(exe));
}
}
else if (outfile == null)
{
outfile = arg;
}
else
{
return(Usage(exe));
}
}
if (outfile == null)
{
return(Usage(exe));
}
using (SoundIO soundIo = new SoundIO())
{
err = (backend == SoundIoBackend.None) ? soundIo.Connect() : soundIo.ConnectBackend(backend);
if (err != SoundIoError.None)
{
Console.Error.WriteLine("Error connecting: {0}.", err.GetErrorMessage());
return(1);
}
soundIo.FlushEvents();
SoundIODevice selectedDevice = null;
if (deviceId != null)
{
foreach (var dev in soundIo)
{
if (dev.Aim == SoundIoDeviceAim.Input && dev.Id.Equals(deviceId) && dev.IsRaw == isRaw)
{
selectedDevice = dev;
break;
}
}
if (selectedDevice == null)
{
Console.Error.WriteLine("Invalid device id: {0}.", deviceId);
return(1);
}
selectedDevice.AddRef(); // Enumerator cleans up itself on dispose
}
else
{
selectedDevice = soundIo.GetDefaultInputDevice();
if (selectedDevice == null)
{
Console.Error.WriteLine("No input devices available.");
return(1);
}
}
Console.WriteLine("Device: {0}.", selectedDevice.Name);
if (selectedDevice.ProbeError != 0)
{
Console.Error.WriteLine("Unable to probe device: {0}.", selectedDevice.ProbeError.GetErrorMessage());
return(1);
}
selectedDevice.SortChannelLayouts();
int sampleRate = prioritizedSampleRates.FirstOrDefault(sr => selectedDevice.SupportsSampleRate(sr));
if (sampleRate == 0)
{
sampleRate = selectedDevice.SampleRates[0].Max;
}
SoundIoFormat fmt = prioritizedFormats.FirstOrDefault(f => selectedDevice.SupportsFormat(f));
if (fmt == SoundIoFormat.Invalid)
{
fmt = selectedDevice.Formats[0];
}
using (SoundIOInStream instream = new SoundIOInStream(selectedDevice))
{
instream.Format = fmt;
instream.SampleRate = sampleRate;
instream.OnReadCallback = ReadCallback;
instream.OnOverflowCallback = OverflowCallback;
err = instream.Open();
if (err != SoundIoError.None)
{
Console.Error.WriteLine("Unable to open input stream: {0}.", err.GetErrorMessage());
return(1);
}
Console.WriteLine("{0} {1}Hz {2} interleaved", instream.Layout.Name, sampleRate, fmt.GetFormatString());
const int ringBufferDurationSeconds = 30;
int capacity = ringBufferDurationSeconds * instream.SampleRate * instream.BytesPerFrame;
SoundIORingBuffer ringBuffer = new SoundIORingBuffer(soundIo, capacity);
instream.UserData = ringBuffer.Handle;
ringBuffers.Add(ringBuffer.Handle, ringBuffer);
err = instream.Start();
if (err != SoundIoError.None)
{
Console.Error.WriteLine("Unable to start input device: {0}.", err.GetErrorMessage());
return(1);
}
Console.WriteLine("Recording data for 10 seconds.");
int timeout = 100;
using (var fs = File.OpenWrite(outfile))
{
byte[] buffer = new byte[capacity];
while (true) // No memory allocations allowed
{
soundIo.FlushEvents();
Thread.Sleep(100);
int fillBytes = ringBuffer.FillCount;
IntPtr readBuf = ringBuffer.ReadPointer;
Marshal.Copy(readBuf, buffer, 0, fillBytes);
fs.Write(buffer, 0, fillBytes);
ringBuffer.AdvanceReadPointer(fillBytes);
if (--timeout <= 0)
{
break;
}
}
}
}
selectedDevice.Release();
return(0);
}
}
static int Main(string[] args)
{
string exe = "SoundIOListDevices";
bool watch = false;
SoundIoBackend backend = SoundIoBackend.None;
SoundIoError err;
for (int i = 0; i < args.Length; i++)
{
string arg = args[i];
if (arg.CompareTo("--watch") == 0)
{
watch = true;
}
else if (arg.CompareTo("--short") == 0)
{
shortOutput = true;
}
else if (arg.StartsWith("--"))
{
i++;
if (i >= args.Length)
{
return(Usage(exe));
}
else if (arg.CompareTo("--backend") == 0)
{
backend = (SoundIoBackend)Enum.Parse(typeof(SoundIoBackend), 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("{0}.", err.GetErrorMessage());
return(1);
}
if (watch)
{
soundIo.OnDevicesChange = OnDevicesChange;
while (true)
{
soundIo.WaitEvents();
}
}
else
{
soundIo.FlushEvents();
err = (SoundIoError)ListDevices(soundIo);
soundIo.Dispose();
Console.ReadKey();
return((int)err);
}
}
/// <summary>
/// Retrieves name string for specified backend.
/// </summary>
/// <param name="backend">Backend for which to retrieve value.</param>
/// <returns>Name of specified backend.</returns>
public static string GetBackendName(this SoundIoBackend backend)
{
return(Marshal.PtrToStringAnsi(NativeMethods.SoundIoBackendName(backend)));
}
