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);
}
}
public static int Main(string [] args)
{
string in_device_id = null, out_device_id = null;
string backend_name = null;
bool in_raw = false, out_raw = false;
double microphone_latency = 0.2; // seconds
foreach (var arg in args)
{
switch (arg)
{
case "--in_raw":
in_raw = true;
continue;
case "--out_raw":
out_raw = true;
continue;
default:
if (arg.StartsWith("--backend:"))
{
backend_name = arg.Substring(arg.IndexOf(':') + 1);
}
else if (arg.StartsWith("--in-device:"))
{
in_device_id = arg.Substring(arg.IndexOf(':') + 1);
}
else if (arg.StartsWith("--out-device:"))
{
out_device_id = arg.Substring(arg.IndexOf(':') + 1);
}
else if (arg.StartsWith("--latency:"))
{
microphone_latency = double.Parse(arg.Substring(arg.IndexOf(':') + 1));
}
continue;
}
}
var api = new SoundIO();
var backend = backend_name == null ? SoundIOBackend.None : (SoundIOBackend)Enum.Parse(typeof(SoundIOBackend), backend_name);
if (backend == SoundIOBackend.None)
{
api.Connect();
}
else
{
api.ConnectBackend(backend);
}
Console.WriteLine("backend: " + api.CurrentBackend);
api.FlushEvents();
var in_device = in_device_id == null?api.GetInputDevice(api.DefaultInputDeviceIndex) :
Enumerable.Range(0, api.InputDeviceCount)
.Select(i => api.GetInputDevice(i))
.FirstOrDefault(d => d.Id == in_device_id && d.IsRaw == in_raw);
if (in_device == null)
{
Console.Error.WriteLine("Input device " + in_device_id + " not found.");
return(1);
}
Console.WriteLine("input device: " + in_device.Name);
if (in_device.ProbeError != 0)
{
Console.Error.WriteLine("Cannot probe input device " + in_device_id + ".");
return(1);
}
var out_device = out_device_id == null?api.GetOutputDevice(api.DefaultOutputDeviceIndex) :
Enumerable.Range(0, api.OutputDeviceCount)
.Select(i => api.GetOutputDevice(i))
.FirstOrDefault(d => d.Id == out_device_id && d.IsRaw == out_raw);
if (out_device == null)
{
Console.Error.WriteLine("Output device " + out_device_id + " not found.");
return(1);
}
Console.WriteLine("output device: " + out_device.Name);
if (out_device.ProbeError != 0)
{
Console.Error.WriteLine("Cannot probe output device " + out_device_id + ".");
return(1);
}
out_device.SortDeviceChannelLayouts();
var layout = SoundIODevice.BestMatchingChannelLayout(out_device, in_device);
if (layout.IsNull)
{
throw new InvalidOperationException("channel layouts not compatible"); // panic()
}
var sample_rate = prioritized_sample_rates.FirstOrDefault(sr => in_device.SupportsSampleRate(sr) && out_device.SupportsSampleRate(sr));
if (sample_rate == default(int))
{
throw new InvalidOperationException("incompatible sample rates"); // panic()
}
var fmt = prioritized_formats.FirstOrDefault(f => in_device.SupportsFormat(f) && out_device.SupportsFormat(f));
if (fmt == default(SoundIOFormat))
{
throw new InvalidOperationException("incompatible sample formats"); // panic()
}
var instream = in_device.CreateInStream();
instream.Format = fmt;
instream.SampleRate = sample_rate;
instream.Layout = layout;
instream.SoftwareLatency = microphone_latency;
instream.ReadCallback = (fmin, fmax) => read_callback(instream, fmin, fmax);
instream.Open();
var outstream = out_device.CreateOutStream();
outstream.Format = fmt;
outstream.SampleRate = sample_rate;
outstream.Layout = layout;
outstream.SoftwareLatency = microphone_latency;
outstream.WriteCallback = (fmin, fmax) => write_callback(outstream, fmin, fmax);
outstream.UnderflowCallback = () => underflow_callback(outstream);
outstream.Open();
int capacity = (int)(microphone_latency * 2 * instream.SampleRate * instream.BytesPerFrame);
ring_buffer = api.CreateRingBuffer(capacity);
var buf = ring_buffer.WritePointer;
int fill_count = (int)(microphone_latency * outstream.SampleRate * outstream.BytesPerFrame);
// FIXME: there should be more efficient way for memset()
for (int i = 0; i < fill_count; i++)
{
Marshal.WriteByte(buf, i, 0);
}
ring_buffer.AdvanceWritePointer(fill_count);
instream.Start();
outstream.Start();
for (;;)
{
api.WaitEvents();
}
outstream.Dispose();
instream.Dispose();
in_device.RemoveReference();
out_device.RemoveReference();
api.Dispose();
return(0);
}
