IPlugExamples/IPlugEffect/IPlugEffect.cpp

   1 #include "IPlugEffect.h"
   2 #include "IPlug_include_in_plug_src.h"
   3 #include "IControl.h"
   4 #include "resource.h"
   5
   6 const int kNumPrograms = 1;
   7
   8 enum EParams
   9 {
  10   kGain = 0,
  11   kNumParams
  12 };
  13
  14 enum ELayout
  15 {
  16   kWidth = GUI_WIDTH,
  17   kHeight = GUI_HEIGHT,
  18
  19   kGainX = 100,
  20   kGainY = 100,
  21   kKnobFrames = 60
  22 };
  23
  24 IPlugEffect::IPlugEffect(IPlugInstanceInfo instanceInfo)
  25   :     IPLUG_CTOR(kNumParams, kNumPrograms, instanceInfo), mGain(1.)
  26 {
  27   TRACE;
  28
  29   //arguments are: name, defaultVal, minVal, maxVal, step, label
  30   GetParam(kGain)->InitDouble("Gain", 50., 0., 100.0, 0.01, "%");
  31   GetParam(kGain)->SetShape(2.);
  32
  33   IGraphics* pGraphics = MakeGraphics(this, kWidth, kHeight);
  34   pGraphics->AttachPanelBackground(&COLOR_RED);
  35
  36   IBitmap knob = pGraphics->LoadIBitmap(KNOB_ID, KNOB_FN, kKnobFrames);
  37
  38   pGraphics->AttachControl(new IKnobMultiControl(this, kGainX, kGainY, kGain, &knob));
  39
  40   AttachGraphics(pGraphics);
  41
  42   //MakePreset("preset 1", ... );
  43   MakeDefaultPreset((char *) "-", kNumPrograms);
  44 }
  45
  46 IPlugEffect::~IPlugEffect() {}
  47
  48 void IPlugEffect::ProcessDoubleReplacing(double** inputs, double** outputs, int nFrames)
  49 {
  50   // Mutex is already locked for us.
  51
  52   double* in1 = inputs[0];
  53   double* in2 = inputs[1];
  54   double* out1 = outputs[0];
  55   double* out2 = outputs[1];
  56
  57   for (int s = 0; s < nFrames; ++s, ++in1, ++in2, ++out1, ++out2)
  58   {
  59     *out1 = *in1 * mGain;
  60     *out2 = *in2 * mGain;
  61   }
  62 }
  63
  64 void IPlugEffect::Reset()
  65 {
  66   TRACE;
  67   IMutexLock lock(this);
  68 }
  69
  70 void IPlugEffect::OnParamChange(int paramIdx)
  71 {
  72   IMutexLock lock(this);
  73
  74   switch (paramIdx)
  75   {
  76     case kGain:
  77       mGain = GetParam(kGain)->Value() / 100.;
  78       break;
  79
  80     default:
  81       break;
  82   }
  83 }