/// <summary>
/// Starts sampling audio from a specific device.
/// </summary>
public void Start(AsioSamplingServiceArgs args)
{
if (Thread.CurrentThread.GetApartmentState() != ApartmentState.STA)
throw new Exception("Thread must run in STA for ASIO sampling to work");
_currentDriver = args.Driver;
if (!args.Driver.InputChannels.Contains(args.Channel))
throw new Exception("Input channel must be in driver.InputChannels");
// The order here is key
// Create buffers before selecting the channel
_currentDriver.CreateBuffers(false);
_currentInputChannel = args.Driver.InputChannels.Where(x => x.Name == args.Channel.Name).Single();
args.Driver.BufferUpdate += new EventHandler(driver_BufferUpdate);
_currentDriver.Start();
}
// Talking directly to the ViewModel like this is not the best.
// Usually we want to use bindings and such, but this is simplest for something like this.
private void channelComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (e.AddedItems.Count > 1) return;
Channel channel = e.AddedItems[0] as Channel;
AsioSamplingServiceArgs args = new AsioSamplingServiceArgs()
{
Channel = channel,
Driver = ViewModel.LoadedDriver,
SamplingRate = 44100
};
ViewModel.RestartSamplingServiceCommand.Execute(args);
}