//------------------------------------------------------------------------
tresult PLUGIN_API AGainSimple::process (ProcessData& data)
{
	// finally the process function
	// In this example there are 4 steps:
	// 1) Read inputs parameters coming from host (in order to adapt our model values)
	// 2) Read inputs events coming from host (we apply a gain reduction depending of the velocity of pressed key)
	// 3) Process the gain of the input buffer to the output buffer
	// 4) Write the new VUmeter value to the output Parameters queue


	//---1) Read inputs parameter changes-----------
	IParameterChanges* paramChanges = data.inputParameterChanges;
	if (paramChanges)
	{
		int32 numParamsChanged = paramChanges->getParameterCount ();
		// for each parameter which are some changes in this audio block:
		for (int32 i = 0; i < numParamsChanged; i++)
		{
			IParamValueQueue* paramQueue = paramChanges->getParameterData (i);
			if (paramQueue)
			{
				int32 offsetSamples;
				double value;
				int32 numPoints = paramQueue->getPointCount ();				
				switch (paramQueue->getParameterId ())
				{
					case kGainId:
						// we use in this example only the last point of the queue.
						// in some wanted case for specific kind of parameter it makes sense to retrieve all points
						// and process the whole audio block in small blocks.
						if (paramQueue->getPoint (numPoints - 1,  offsetSamples, value) == kResultTrue)
							fGain = (float)value;
						break;

					case kBypassId:
						if (paramQueue->getPoint (numPoints - 1,  offsetSamples, value) == kResultTrue)
							bBypass = (value > 0.5f);
						break;
				}
			}
		}
	}
	
	//---2) Read input events-------------
	IEventList* eventList = data.inputEvents;
	if (eventList) 
	{
		int32 numEvent = eventList->getEventCount ();
		for (int32 i = 0; i < numEvent; i++)
		{
			Event event;
			if (eventList->getEvent (i, event) == kResultOk)
			{
				switch (event.type)
				{
					//----------------------
					case Event::kNoteOnEvent:
						// use the velocity as gain modifier
						fGainReduction = event.noteOn.velocity;
						break;
					
					//----------------------
					case Event::kNoteOffEvent:
						// noteOff reset the reduction
						fGainReduction = 0.f;
						break;
				}
			}
		}
	}
		
	//-------------------------------------
	//---3) Process Audio---------------------
	//-------------------------------------
	if (data.numInputs == 0 || data.numOutputs == 0)
	{
		// nothing to do
		return kResultOk;
	}

	// (simplification) we suppose in this example that we have the same input channel count than the output
	int32 numChannels = data.inputs[0].numChannels;
	//---get audio buffers----------------
	float** in  = data.inputs[0].channelBuffers32;
	float** out = data.outputs[0].channelBuffers32;

	//---check if silence---------------
	// normally we have to check each channel (simplification)
	if (data.inputs[0].silenceFlags != 0)
	{
		// mark output silence too
		data.outputs[0].silenceFlags = data.inputs[0].silenceFlags;
		
		// the Plug-in has to be sure that if it sets the flags silence that the output buffer are clear
		int32 sampleFrames = data.numSamples;
		for (int32 i = 0; i < numChannels; i++)
		{
			// dont need to be cleared if the buffers are the same (in this case input buffer are already cleared by the host)
			if (in[i] != out[i])
			{
				memset (out[i], 0, sampleFrames * sizeof (float));
			}
		}

		// nothing to do at this point
		return kResultOk;
	}

	// mark our outputs has not silent
	data.outputs[0].silenceFlags = 0;

	//---in bypass mode outputs should be like inputs-----
	if (bBypass)
	{
		int32 sampleFrames = data.numSamples;
		for (int32 i = 0; i < numChannels; i++)
		{
			// dont need to be copied if the buffers are the same
			if (in[i] != out[i])
				memcpy (out[i], in[i], sampleFrames * sizeof (float));
		}
		// in this example we dont update the VuMeter in Bypass
	}
	else
	{
		float fVuPPM = 0.f;

		//---apply gain factor----------
		float gain = (fGain - fGainReduction);
		if (bHalfGain)
		{
			gain = gain * 0.5f;
		}

		if (gain < 0.0000001)
		{
			int32 sampleFrames = data.numSamples;
			for (int32 i = 0; i < numChannels; i++)
			{
				memset (out[i], 0, sampleFrames * sizeof (float));
			}
			data.outputs[0].silenceFlags = (1 << numChannels) - 1;  // this will set to 1 all channels
			fVuPPM = 0.f;
		}
		else
		{
			// in real Plug-in it would be better to do dezippering to avoid jump (click) in gain value
			for (int32 i = 0; i < numChannels; i++)
			{
				int32 sampleFrames = data.numSamples;
				float* ptrIn  = in[i];
				float* ptrOut = out[i];
				float tmp;
				while (--sampleFrames >= 0)
				{
					// apply gain
					tmp = (*ptrIn++) * gain;
					(*ptrOut++) = tmp;

					// check only positiv values
					if (tmp > fVuPPM)
						fVuPPM = tmp;
				}
			}
		}

		//---3) Write outputs parameter changes-----------
		IParameterChanges* paramChanges = data.outputParameterChanges;
		// a new value of VuMeter will be send to the host 
		// (the host will send it back in sync to our controller for updating our editor)
		if (paramChanges && fVuPPMOld != fVuPPM)
		{
			int32 index = 0;
			IParamValueQueue* paramQueue = paramChanges->addParameterData (kVuPPMId, index);
			if (paramQueue)
			{
				int32 index2 = 0;
				paramQueue->addPoint (0, fVuPPM, index2); 
			}
		}
		fVuPPMOld = fVuPPM;
	}

	return kResultOk;
}
Beispiel #2
0
//------------------------------------------------------------------------
tresult PLUGIN_API Plug::process (ProcessData& data)
{
	//---1) Read inputs parameter changes-----------
	IParameterChanges* paramChanges = data.inputParameterChanges;
	if (paramChanges)
	{
		int32 numParamsChanged = paramChanges->getParameterCount ();
		// for each parameter which are some changes in this audio block:
		for (int32 i = 0; i < numParamsChanged; i++)
		{
			IParamValueQueue* paramQueue = paramChanges->getParameterData (i);
			if (paramQueue)
			{
				int32 offsetSamples;
				double value;
				int32 numPoints = paramQueue->getPointCount ();				
				switch (paramQueue->getParameterId ())
				{
					case kBypassId:
						if (paramQueue->getPoint (numPoints - 1,  offsetSamples, value) == kResultTrue)
						{
							bBypass = (value > 0.5f);
						}
						break;
				}
			}
		}
	}
	
	//---2) Read input events-------------
	IEventList* eventList = data.inputEvents;
	if (eventList) 
	{
		int32 numEvent = eventList->getEventCount ();
		for (int32 i = 0; i < numEvent; i++)
		{
			Event event;
			if (eventList->getEvent (i, event) == kResultOk)
			{
				switch (event.type)
				{
					//----------------------
					case Event::kNoteOnEvent:
						{
 							mLastNoteOnPitch = event.noteOn.pitch;
							mLastNoteOnId = event.noteOn.noteId;
							/*String str;
							str.printf (STR("noteON %d"), event.noteOff.noteId);
							sendTextMessage (str);*/
						}
						break;

					//----------------------
					case Event::kNoteOffEvent:
						{
						/*	String str;
							str.printf (STR("noteOff %d"), event.noteOff.noteId);
							sendTextMessage (str);
						*/}
						break;

						//----------------------
					case Event::kNoteExpressionTextEvent:
						// noteOff reset the reduction
						if (event.noteExpressionText.typeId == kTextTypeID)
						{
							//if (mLastNoteOnId == event.noteExpressionText.noteId)
							{
								String str (STR("Text: "));
								str += event.noteExpressionText.text;
								String tmp1;
								tmp1.printInt64 (mLastNoteOnId);
								String tmp2;
								tmp2.printInt64 (event.noteExpressionText.noteId);
								str += STR(" - id:");
								str += tmp2;
								str += STR(" - noteOn id:");
								str += tmp1;
								sendTextMessage (str);
							}
						}
						else if (event.noteExpressionText.typeId == kPhonemeTypeID)
						{
							//if (mLastNoteOnId == event.noteExpressionText.noteId)
							{
								String str (STR("Phoneme: "));
								str += event.noteExpressionText.text;
								String tmp1;
								tmp1.printInt64 (mLastNoteOnId);
								String tmp2;
								tmp2.printInt64 (event.noteExpressionText.noteId);
								str += STR(" - id:");
								str += tmp2;
								str += STR(" - noteOn id:");
								str += tmp1;
							}
						}
						break;
				}
			}
		}
	}
	//-------------------------------------
	//---3) Process Audio---------------------
	//-------------------------------------
	
	if (data.numOutputs == 0)
	{
		// nothing to do
		return kResultOk;
	}

	// no output
	float** out = data.outputs[0].channelBuffers32;
	for (int32 i = 0; i < data.outputs[0].numChannels; i++)
	{
		memset (out[i], 0, data.numSamples * sizeof (float));
	}
	data.outputs[0].silenceFlags = 0x7fff;

	return kResultOk;
}
Beispiel #3
0
tresult PLUGIN_API IPlugVST3::process(ProcessData& data)
{ 
  TRACE_PROCESS;
  
  IMutexLock lock(this); // TODO: is this the best place to lock the mutex?
  
  memcpy(&mProcessContext, data.processContext, sizeof(ProcessContext));
  
  //process parameters
  IParameterChanges* paramChanges = data.inputParameterChanges;
  if (paramChanges)
  {
    int32 numParamsChanged = paramChanges->getParameterCount();
    
    //it is possible to get a finer resolution of control here by retrieving more values (points) from the queue
    //for now we just grab the last one
    
    for (int32 i = 0; i < numParamsChanged; i++)
    {
      IParamValueQueue* paramQueue = paramChanges->getParameterData(i);
      if (paramQueue)
      {
        int32 numPoints = paramQueue->getPointCount();
        int32 offsetSamples;
        double value;
        
        if (paramQueue->getPoint(numPoints - 1,  offsetSamples, value) == kResultTrue)
        {
          int idx = paramQueue->getParameterId();
          if (idx >= 0 && idx < NParams()) 
          {
            GetParam(idx)->SetNormalized((double)value);
            if (GetGUI()) GetGUI()->SetParameterFromPlug(idx, (double)value, true);
            OnParamChange(idx);
          }
        }
      }
    }
  }
  
  if(mDoesMidi) {
    //process events.. only midi note on and note off?
    IEventList* eventList = data.inputEvents;
    if (eventList) 
    {
      int32 numEvent = eventList->getEventCount();
      for (int32 i=0; i<numEvent; i++)
      {
        Event event;
        if (eventList->getEvent(i, event) == kResultOk)
        {
          IMidiMsg msg;
          switch (event.type)
          {
            case Event::kNoteOnEvent:
            {
              msg.MakeNoteOnMsg(event.noteOn.pitch, event.noteOn.velocity * 127, event.sampleOffset, event.noteOn.channel);
              ProcessMidiMsg(&msg);
              break;
            }
              
            case Event::kNoteOffEvent:
            {
              msg.MakeNoteOffMsg(event.noteOff.pitch, event.sampleOffset, event.noteOff.channel);
              ProcessMidiMsg(&msg);
              break;
            }
          }
        }
      }
    }
  }
  
  //process audio
  if (data.numInputs == 0 || data.numOutputs == 0)
  {
    // nothing to do
    return kResultOk;
  }
  
  if (processSetup.symbolicSampleSize == kSample32)
  {
    float** in  = data.inputs[0].channelBuffers32;
    float** out = data.outputs[0].channelBuffers32;
    
    if (mScChans) 
    {
      float** side = data.inputs[1].channelBuffers32;

      if (getAudioInput(1)->isActive()) 
      {
        int totalNInputs = data.inputs[0].numChannels + data.inputs[1].numChannels;
        
        float** allInputs = new float*[totalNInputs];

        for (int i = 0; i < data.inputs[0].numChannels; i ++) {
          allInputs[i] = in[i];
        }
        
        for (int i = 0; i < data.inputs[1].numChannels; i ++) {
          allInputs[i + data.inputs[0].numChannels] = side[i];
        }
        
        AttachInputBuffers(0, totalNInputs, allInputs, data.numSamples);
        mSideChainIsConnected = true;
        
        delete [] allInputs;
      }
      else 
      {
        AttachInputBuffers(0, data.inputs[0].numChannels, in, data.numSamples);
        mSideChainIsConnected = false;
      }
    }
    else 
    {
      AttachInputBuffers(0, data.inputs[0].numChannels, in, data.numSamples);
    }
    
    AttachOutputBuffers(0, data.outputs[0].numChannels, out);
    ProcessBuffers(0.0f, data.numSamples);
  }
  else if (processSetup.symbolicSampleSize == kSample64) // TODO: parity for double precision
  {
    double** in  = data.inputs[0].channelBuffers64;
    double** out = data.outputs[0].channelBuffers64;
    
    AttachInputBuffers(0, data.inputs[0].numChannels, in, data.numSamples);
    AttachOutputBuffers(0, data.outputs[0].numChannels, out);
    
    ProcessBuffers(0.0, data.numSamples);
  } 
  
  // Midi Out
//  if (mDoesMidi) {
//    IEventList eventList = data.outputEvents;
//    
//    if (eventList) 
//    {
//      Event event;
//      
//      while (!mMidiOutputQueue.Empty()) {
//        //TODO: parse events and add
//        eventList.addEvent(event);
//      }
//    }
//  }
  
  return kResultOk; 
}