IPlugVST2.h

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/*
 ==============================================================================
 
 This file is part of the iPlug 2 library. Copyright (C) the iPlug 2 developers. 
 
 See LICENSE.txt for  more info.
 
 ==============================================================================
*/

#ifndef _IPLUGAPI_
#define _IPLUGAPI_
// Only load one API class!

#include "aeffectx.h"
#include "IPlugAPIBase.h"
#include "IPlugProcessor.h"

BEGIN_IPLUG_NAMESPACE

struct InstanceInfo
{
  audioMasterCallback mVSTHostCallback;
};

class IPlugVST2 : public IPlugAPIBase
                , public IPlugProcessor
{
public:
  IPlugVST2(const InstanceInfo& info, const Config& config);

  //IPlugAPIBase
  void BeginInformHostOfParamChange(int idx) override;
  void InformHostOfParamChange(int idx, double normalizedValue) override;
  void EndInformHostOfParamChange(int idx) override;
  void InformHostOfPresetChange() override;
  void HostSpecificInit() override;
  bool EditorResize(int viewWidth, int viewHeight) override;

  //IPlugProcessor
  void SetLatency(int samples) override;
  bool SendMidiMsg(const IMidiMsg& msg) override;
  bool SendSysEx(const ISysEx& msg) override;

  //IPlugVST
  audioMasterCallback& GetHostCallback() { return mHostCallback; }
  AEffect& GetAEffect() { return mAEffect; }
  void OutputSysexFromEditor();

private:
  virtual VstIntPtr VSTVendorSpecific(VstInt32 idx, VstIntPtr value, void* ptr, float opt) { return 0; }
  virtual VstIntPtr VSTCanDo(const char* hostString) { return 0; }
    
  template <class SAMPLETYPE>
  void VSTPreProcess(SAMPLETYPE** inputs, SAMPLETYPE** outputs, VstInt32 nFrames);
  
  static VstIntPtr VSTCALLBACK VSTDispatcher(AEffect *pEffect, VstInt32 opCode, VstInt32 idx, VstIntPtr value, void *ptr, float opt);
  static void VSTCALLBACK VSTProcess(AEffect *pEffect, float **inputs, float **outputs, VstInt32 nFrames);  // Deprecated.
  static void VSTCALLBACK VSTProcessReplacing(AEffect *pEffect, float **inputs, float **outputs, VstInt32 nFrames);
  static void VSTCALLBACK VSTProcessDoubleReplacing(AEffect *pEffect, double **inputs, double **outputs, VstInt32 nFrames);
  static float VSTCALLBACK VSTGetParameter(AEffect *pEffect, VstInt32 idx);
  static void VSTCALLBACK VSTSetParameter(AEffect *pEffect, VstInt32 idx, float value);
  
  bool SendVSTEvent(VstEvent& event);
  bool SendVSTEvents(WDL_TypedBuf<VstEvent>* pEvents);
  
  void UpdateEditRect();
    
  ERect mEditRect;
  VstSpeakerArrangement mInputSpkrArr, mOutputSpkrArr;

  enum { VSTEXT_NONE=0, VSTEXT_COCKOS, VSTEXT_COCOA }; // list of VST extensions supported by host
  int mHasVSTExtensions;

  IByteChunk mState;     // Persistent storage if the host asks for plugin state.
  IByteChunk mBankState; // Persistent storage if the host asks for bank state.
protected:
  AEffect mAEffect;
  audioMasterCallback mHostCallback;
};

#ifndef REAPER_PLUGIN
IPlugVST2* MakePlug(const InstanceInfo& info);
#endif

END_IPLUG_NAMESPACE

#endif