/// <summary>
/// Handles the exception. Throws an exception based on the error.
/// </summary>
/// <param name="error">The error to check.</param>
/// <param name="methodName">Method name</param>
private void HandleException(AsioError error, string methodName)
{
if (error != AsioError.ASE_OK && error != AsioError.ASE_SUCCESS)
{
var asioException = new AsioException(
$"Error code [{AsioException.getErrorName(error)}] while calling ASIO method <{methodName}>, {this.GetErrorMessage()}");
asioException.Error = error;
throw asioException;
}
}
/// <summary>
/// Builds the capabilities internally.
/// </summary>
private void BuildCapabilities()
{
capability = new AsioDriverCapability();
capability.DriverName = driver.GetDriverName();
// Get nb Input/Output channels
driver.GetChannels(out capability.NbInputChannels, out capability.NbOutputChannels);
capability.InputChannelInfos = new AsioChannelInfo[capability.NbInputChannels];
capability.OutputChannelInfos = new AsioChannelInfo[capability.NbOutputChannels];
// Get ChannelInfo for Inputs
for (int i = 0; i < capability.NbInputChannels; i++)
{
capability.InputChannelInfos[i] = driver.GetChannelInfo(i, true);
}
// Get ChannelInfo for Output
for (int i = 0; i < capability.NbOutputChannels; i++)
{
capability.OutputChannelInfos[i] = driver.GetChannelInfo(i, false);
}
// Get the current SampleRate
capability.SampleRate = driver.GetSampleRate();
var error = driver.GetLatencies(out capability.InputLatency, out capability.OutputLatency);
// focusrite scarlett 2i4 returns ASE_NotPresent here
if (error != AsioError.ASE_OK && error != AsioError.ASE_NotPresent)
{
var ex = new AsioException("ASIOgetLatencies");
ex.Error = error;
throw ex;
}
// Get BufferSize
driver.GetBufferSize(out capability.BufferMinSize, out capability.BufferMaxSize,
out capability.BufferPreferredSize, out capability.BufferGranularity);
}