public static void Main(string[] args)
{
XtMix mix = new XtMix(48000, XtSample.Int16);
XtFormat inputFormat = new XtFormat(mix, 2, 0, 0, 0);
XtChannels inputChannels = new XtChannels(2, 0, 0, 0);
XtFormat outputFormat = new XtFormat(mix, 0, 0, 2, 0);
XtChannels outputChannels = new XtChannels(0, 0, 2, 0);
using (XtAudio audio = new XtAudio(null, IntPtr.Zero, null, null)) {
XtService service = XtAudio.GetServiceBySetup(XtSetup.SystemAudio);
using (XtDevice input = service.OpenDefaultDevice(false))
using (XtDevice output = service.OpenDefaultDevice(true)) {
if (input != null && input.SupportsFormat(inputFormat) &&
output != null && output.SupportsFormat(outputFormat))
{
using (XtStream stream = service.AggregateStream(
new XtDevice[] { input, output },
new XtChannels[] { inputChannels, outputChannels },
new double[] { 30.0, 30.0 },
2, mix, true, false, output, OnAggregate, XRun, "user-data")) {
stream.Start();
Console.WriteLine("Streaming aggregate, press any key to continue...");
Console.ReadLine();
stream.Stop();
}
}
}
}
}
internal static extern IntPtr XtPrintChannelsToString(XtChannels channels);
private void OnStart(object sender, EventArgs ea)
{
try {
StreamType type = (StreamType)streamType.SelectedItem;
bool input = type == StreamType.Capture || type == StreamType.Duplex || type == StreamType.Latency;
bool output = type == StreamType.Render || type == StreamType.Duplex || type == StreamType.Latency;
XtDevice inputDevice = ((DeviceView)this.inputDevice.SelectedItem).device;
XtDevice outputDevice = ((DeviceView)this.outputDevice.SelectedItem).device;
XtDevice secondaryInputDevice = ((DeviceView)this.secondaryInput.SelectedItem).device;
XtDevice secondaryOutputDevice = ((DeviceView)this.secondaryOutput.SelectedItem).device;
if (input && inputDevice == null)
{
MessageBox.Show(this,
"Select an input device.",
"Invalid input device.");
return;
}
if (output && outputDevice == null)
{
MessageBox.Show(this,
"Select an output device.",
"Invalid output device.");
return;
}
if (type == StreamType.Duplex && outputDevice != inputDevice)
{
MessageBox.Show(this,
"For duplex operation, input and output device must be the same.",
"Invalid duplex device.");
return;
}
if (type == StreamType.Aggregate &&
(inputDevice == null && secondaryInputDevice == null ||
outputDevice == null && secondaryOutputDevice == null))
{
MessageBox.Show(this,
"For aggregate operation, select at least 1 input and 1 output device.",
"Invalid aggregate device.");
return;
}
XRunCallback xRunCallback = new XRunCallback(AddMessage);
XtFormat inputFormat = GetFormat(false);
inputFormat.inputs = (int)channelCount.SelectedItem;
if (input && inputChannels.SelectedItems.Count > 0 && inputChannels.SelectedItems.Count != inputFormat.inputs)
{
MessageBox.Show(this,
"Selected either 0 input channels or a number equal to the selected format's channels.",
"Invalid input channel mask.");
return;
}
for (int c = 0; c < inputChannels.SelectedItems.Count; c++)
{
inputFormat.inMask |= (1UL << ((ChannelView)inputChannels.SelectedItems[c]).index);
}
XtFormat outputFormat = GetFormat(true);
if (output && outputChannels.SelectedItems.Count > 0 && outputChannels.SelectedItems.Count != outputFormat.outputs)
{
MessageBox.Show(this,
"Selected either 0 output channels or a number equal to the selected format's channels.",
"Invalid output channel mask.");
return;
}
for (int c = 0; c < outputChannels.SelectedItems.Count; c++)
{
outputFormat.outMask |= (1UL << ((ChannelView)outputChannels.SelectedItems[c]).index);
}
if (type == StreamType.Capture)
{
captureFile = new FileStream("xt-audio.raw", FileMode.Create, FileAccess.Write);
CaptureCallback callback = new CaptureCallback(OnStreamError, AddMessage, captureFile);
inputStream = inputDevice.OpenStream(inputFormat, streamInterleaved.Checked, streamRaw.Checked,
bufferSize.Value, callback.OnCallback, xRunCallback.OnCallback, "capture-user-data");
callback.Init(inputStream.GetFormat(), inputStream.GetFrames());
inputStream.Start();
}
else if (type == StreamType.Render)
{
RenderCallback callback = new RenderCallback(OnStreamError, AddMessage);
outputStream = outputDevice.OpenStream(outputFormat, streamInterleaved.Checked, streamRaw.Checked,
bufferSize.Value, callback.OnCallback, xRunCallback.OnCallback, "render-user-data");
outputStream.Start();
}
else if (type == StreamType.Duplex)
{
XtFormat duplexFormat = inputFormat;
duplexFormat.outputs = outputFormat.outputs;
duplexFormat.outMask = outputFormat.outMask;
FullDuplexCallback callback = new FullDuplexCallback(OnStreamError, AddMessage);
outputStream = outputDevice.OpenStream(duplexFormat, streamInterleaved.Checked, streamRaw.Checked,
bufferSize.Value, callback.OnCallback, xRunCallback.OnCallback, "duplex-user-data");
outputStream.Start();
}
else if (type == StreamType.Aggregate)
{
List <XtDevice> devices = new List <XtDevice>();
List <double> bufferSizes = new List <double>();
List <XtChannels> channels = new List <XtChannels>();
if (inputDevice != null)
{
devices.Add(inputDevice);
bufferSizes.Add(bufferSize.Value);
channels.Add(new XtChannels(inputFormat.inputs, inputFormat.inMask, 0, 0));
}
if (outputDevice != null)
{
devices.Add(outputDevice);
bufferSizes.Add(bufferSize.Value);
channels.Add(new XtChannels(0, 0, outputFormat.outputs, outputFormat.outMask));
}
if (secondaryInputDevice != null)
{
devices.Add(secondaryInputDevice);
bufferSizes.Add(bufferSize.Value);
channels.Add(new XtChannels(inputFormat.inputs, inputFormat.inMask, 0, 0));
}
if (secondaryOutputDevice != null)
{
devices.Add(secondaryOutputDevice);
bufferSizes.Add(bufferSize.Value);
channels.Add(new XtChannels(0, 0, outputFormat.outputs, outputFormat.outMask));
}
XtDevice[] devicesArray = devices.ToArray();
double[] bufferSizesArray = bufferSizes.ToArray();
XtChannels[] channelsArray = channels.ToArray();
XtDevice master = outputMaster.Checked ?
(outputDevice != null ? outputDevice :
secondaryOutputDevice != null ? secondaryOutputDevice :
inputDevice != null ? inputDevice : secondaryInputDevice) :
(inputDevice != null ? inputDevice :
secondaryInputDevice != null ? secondaryInputDevice :
outputDevice != null ? outputDevice : secondaryOutputDevice);
AggregateCallback streamCallback = new AggregateCallback(OnStreamError, AddMessage);
outputStream = ((XtService)service.SelectedItem).AggregateStream(devicesArray, channelsArray,
bufferSizesArray, devicesArray.Length, outputFormat.mix, streamInterleaved.Checked, streamRaw.Checked,
master, streamCallback.OnCallback, xRunCallback.OnCallback, "aggregate-user-data");
streamCallback.Init(outputStream.GetFrames());
outputStream.Start();
}
else if (inputDevice == outputDevice)
{
XtFormat duplexFormat = inputFormat;
duplexFormat.outputs = outputFormat.outputs;
duplexFormat.outMask = outputFormat.outMask;
LatencyCallback callback = new LatencyCallback(OnStreamError, AddMessage);
outputStream = outputDevice.OpenStream(duplexFormat, streamInterleaved.Checked, streamRaw.Checked,
bufferSize.Value, callback.OnCallback, xRunCallback.OnCallback, "latency-user-data");
outputStream.Start();
}
else
{
XtDevice[] devices = new XtDevice[] { inputDevice, outputDevice };
double[] bufferSizes = new double[] { bufferSize.Value, bufferSize.Value };
XtChannels[] channels = new XtChannels[] {
new XtChannels(inputFormat.inputs, inputFormat.inMask, 0, 0),
new XtChannels(0, 0, outputFormat.outputs, outputFormat.outMask)
};
XtDevice master = outputMaster.Checked ? outputDevice : inputDevice;
LatencyCallback callback = new LatencyCallback(OnStreamError, AddMessage);
outputStream = ((XtService)service.SelectedItem).AggregateStream(devices, channels,
bufferSizes, devices.Length, outputFormat.mix, streamInterleaved.Checked, streamRaw.Checked,
master, callback.OnCallback, xRunCallback.OnCallback, "latency-user-data");
outputStream.Start();
}
stop.Enabled = true;
panel.Enabled = false;
start.Enabled = false;
streamRaw.Enabled = false;
bufferSize.Enabled = false;
streamType.Enabled = false;
outputMaster.Enabled = false;
secondaryInput.Enabled = false;
secondaryOutput.Enabled = false;
streamInterleaved.Enabled = false;
} catch (XtException e) {
Stop();
MessageBox.Show(this, e.ToString(), "Failed to start stream.", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}