IPlugExamples/IPlugMonoSynth/IPlugMonoSynth.h

   1 #ifndef __IPLUGMONOSYNTH__
   2 #define __IPLUGMONOSYNTH__
   3
   4 #include "IPlug_include_in_plug_hdr.h"
   5 #include "IMidiQueue.h"
   6
   7 // http://www.musicdsp.org/archive.php?classid=3#257
   8
   9 class CParamSmooth
  10 {
  11 public:
  12   CParamSmooth() { a = 0.99; b = 1. - a; z = 0.; };
  13   ~CParamSmooth() {};
  14   inline double Process(double in) { z = (in * b) + (z * a); return z; }
  15 private:
  16   double a, b, z;
  17 };
  18
  19 class IPlugMonoSynth : public IPlug
  20 {
  21 public:
  22
  23   IPlugMonoSynth(IPlugInstanceInfo instanceInfo);
  24   ~IPlugMonoSynth();
  25
  26   void Reset();
  27   void OnParamChange(int paramIdx);
  28
  29   void ProcessDoubleReplacing(double** inputs, double** outputs, int nFrames);
  30   bool HostRequestingAboutBox();
  31
  32   int GetNumKeys();
  33   bool GetKeyStatus(int key);
  34   void ProcessMidiMsg(IMidiMsg* pMsg);
  35
  36 private:
  37   IBitmapOverlayControl* mAboutBox;
  38   IControl* mKeyboard;
  39   int mMeterIdx_L, mMeterIdx_R;
  40
  41   IMidiQueue mMidiQueue;
  42
  43   int mNumKeys; // how many keys are being played (via midi)
  44   bool mKeyStatus[128]; // array of on/off for each key
  45
  46   int mPhase;
  47   int mNote;
  48   int mKey;
  49
  50   double mGainL, mGainR;
  51   double mSampleRate;
  52   double mFreq;
  53   double mNoteGain;
  54   double mPrevL, mPrevR;
  55
  56   ITimeInfo mTimeInfo;
  57
  58   CParamSmooth mGainLSmoother, mGainRSmoother;
  59 };
  60
  61 enum ELayout
  62 {
  63   kWidth = GUI_WIDTH,  // width of plugin window
  64   kHeight = GUI_HEIGHT, // height of plugin window
  65
  66   kKeybX = 1,
  67   kKeybY = 233,
  68
  69   kGainX = 100,
  70   kGainY = 100,
  71   kKnobFrames = 60
  72 };
  73
  74 #endif //__IPLUGMONOSYNTH__