public static unsafe float[,] GetMatrixMixMap(AudioChannelLayout inputLayout, AudioChannelLayout outputLayout)
{
if (inputLayout == null)
throw new ArgumentNullException ("inputLayout");
if (outputLayout == null)
throw new ArgumentNullException ("outputLayout");
var channels_count_output = GetNumberOfChannels (outputLayout);
if (channels_count_output == null)
throw new ArgumentException ("outputLayout");
var channels_count_input = GetNumberOfChannels (inputLayout);
if (channels_count_input == null)
throw new ArgumentException ("inputLayout");
int ptr_size;
var input_ptr = inputLayout.ToBlock (out ptr_size);
var output_ptr = outputLayout.ToBlock (out ptr_size);
var array = new IntPtr[] { input_ptr, output_ptr };
ptr_size = sizeof (IntPtr) * array.Length;
float[,] value;
AudioFormatError res;
fixed (IntPtr* ptr = &array[0]) {
value = new float[channels_count_input.Value, channels_count_output.Value];
var size = sizeof (float) * channels_count_input.Value * channels_count_output.Value;
fixed (float* value_ptr = &value[0, 0]) {
res = AudioFormatPropertyNative.AudioFormatGetProperty (AudioFormatProperty.MatrixMixMap, ptr_size, ptr, ref size, value_ptr);
}
}
Marshal.FreeHGlobal (input_ptr);
Marshal.FreeHGlobal (output_ptr);
return res == 0 ? value : null;
}