/// <summary>
/// Initializes a new instance of the <see cref="AsioDriverExt"/> class based on an already
/// instantiated AsioDriver instance.
/// </summary>
/// <param name="driver">A AsioDriver already instantiated.</param>
public AsioDriverExt(AsioDriver driver)
{
this.driver = driver;
if (!driver.Init(IntPtr.Zero))
{
throw new InvalidOperationException(driver.GetErrorMessage());
}
callbacks = new AsioCallbacks();
callbacks.pasioMessage = AsioMessageCallBack;
callbacks.pbufferSwitch = BufferSwitchCallBack;
callbacks.pbufferSwitchTimeInfo = BufferSwitchTimeInfoCallBack;
callbacks.psampleRateDidChange = SampleRateDidChangeCallBack;
BuildCapabilities();
}
/// <summary>
/// Creates the buffers.
/// </summary>
/// <param name="bufferInfos">The buffer infos.</param>
/// <param name="numChannels">The num channels.</param>
/// <param name="bufferSize">Size of the buffer.</param>
/// <param name="callbacks">The callbacks.</param>
public void CreateBuffers(IntPtr bufferInfos, int numChannels, int bufferSize, ref AsioCallbacks callbacks)
{
// next two lines suggested by droidi on codeplex issue tracker
pinnedcallbacks = Marshal.AllocHGlobal(Marshal.SizeOf(callbacks));
Marshal.StructureToPtr(callbacks, pinnedcallbacks, false);
HandleException(
asioDriverVTable.createBuffers(pAsioComObject, bufferInfos, numChannels, bufferSize, pinnedcallbacks),
"createBuffers");
}