unsafe void TapProcess(MTAudioProcessingTap tap, nint numberFrames, MTAudioProcessingTapFlags flags,
AudioBuffers bufferList,
out nint numberFramesOut,
out MTAudioProcessingTapFlags flagsOut)
{
numberFramesOut = 0;
flagsOut = (MTAudioProcessingTapFlags)0;
// Skip processing when format not supported.
if (!context.SupportedTapProcessingFormat)
{
Console.WriteLine("Unsupported tap processing format.");
return;
}
if (IsBandpassFilterEnabled)
{
// Apply bandpass filter Audio Unit.
if (context.AudioUnit != null)
{
var audioTimeStamp = new AudioTimeStamp
{
SampleTime = context.SampleCount,
Flags = AudioTimeStamp.AtsFlags.SampleTimeValid
};
var f = (AudioUnitRenderActionFlags)0;
var status = context.AudioUnit.Render(ref f, audioTimeStamp, 0, (uint)numberFrames, bufferList);
if (status != AudioUnitStatus.NoError)
{
Console.WriteLine("AudioUnitRender(): {0}", status);
return;
}
// Increment sample count for audio unit.
context.SampleCount += numberFrames;
// Set number of frames out.
numberFramesOut = numberFrames;
}
}
else
{
// Get actual audio buffers from MTAudioProcessingTap (AudioUnitRender() will fill bufferListInOut otherwise).
CMTimeRange tr;
var status = tap.GetSourceAudio(numberFrames, bufferList, out flagsOut, out tr, out numberFramesOut);
if (status != MTAudioProcessingTapError.None)
{
Console.WriteLine("MTAudioProcessingTapGetSourceAudio: {0}", status);
return;
}
}
try
{
UpdateVolumes(bufferList, numberFrames);
}
catch (Exception ex)
{
}
}
AudioUnitStatus Render(AudioUnitRenderActionFlags actionFlags, AudioTimeStamp timeStamp, uint busNumber, uint numberFrames, AudioBuffers data)
{
// Just return audio buffers from MTAudioProcessingTap.
MTAudioProcessingTapFlags flags;
CMTimeRange range;
nint n;
var error = (AudioUnitStatus)(int)audioProcessingTap.GetSourceAudio((nint)numberFrames, data, out flags, out range, out n);
if (error != AudioUnitStatus.NoError)
{
Console.WriteLine("{0} audioProcessingTap.GetSourceAudio failed", error);
}
return(error);
}
unsafe void TapProcess (MTAudioProcessingTap tap, nint numberFrames, MTAudioProcessingTapFlags flags,
AudioBuffers bufferList,
out nint numberFramesOut,
out MTAudioProcessingTapFlags flagsOut)
{
numberFramesOut = 0;
flagsOut = (MTAudioProcessingTapFlags)0;
// Skip processing when format not supported.
if (!context.SupportedTapProcessingFormat) {
Console.WriteLine ("Unsupported tap processing format.");
return;
}
if (IsBandpassFilterEnabled) {
// Apply bandpass filter Audio Unit.
if (context.AudioUnit != null) {
var audioTimeStamp = new AudioTimeStamp {
SampleTime = context.SampleCount,
Flags = AudioTimeStamp.AtsFlags.SampleTimeValid
};
var f = (AudioUnitRenderActionFlags)0;
var status = context.AudioUnit.Render (ref f, audioTimeStamp, 0, (uint)numberFrames, bufferList);
if (status != AudioUnitStatus.NoError) {
Console.WriteLine ("AudioUnitRender(): {0}", status);
return;
}
// Increment sample count for audio unit.
context.SampleCount += numberFrames;
// Set number of frames out.
numberFramesOut = numberFrames;
}
} else {
// Get actual audio buffers from MTAudioProcessingTap (AudioUnitRender() will fill bufferListInOut otherwise).
CMTimeRange tr;
MTAudioProcessingTapError status = tap.GetSourceAudio (numberFrames, bufferList, out flagsOut, out tr, out numberFramesOut);
if (status != MTAudioProcessingTapError.None) {
Console.WriteLine ("MTAudioProcessingTapGetSourceAudio: {0}", status);
return;
}
}
UpdateVolumes (bufferList, numberFrames);
}
