C++ IParam::GetMax方法代码示例

VstIntPtr VSTCALLBACK IPlugVST::VSTDispatcher(AEffect *pEffect, VstInt32 opCode, VstInt32 idx, VstIntPtr value, void *ptr, float opt)
{
  // VSTDispatcher is an IPlugVST class member, we can access anything in IPlugVST from here.
  IPlugVST* _this = (IPlugVST*) pEffect->object;
  if (!_this)
  {
    return 0;
  }
  IPlugBase::IMutexLock lock(_this);

  // Handle a couple of opcodes here to make debugging easier.
  switch (opCode)
  {
    case effEditIdle:
    case __effIdleDeprecated:
    #ifdef USE_IDLE_CALLS
    _this->OnIdle();
    #endif
    return 0;
  }

  Trace(TRACELOC, "%d(%s):%d:%d", opCode, VSTOpcodeStr(opCode), idx, (int) value);

  switch (opCode)
  {
    case effOpen:
    {
      _this->HostSpecificInit();
      _this->OnParamReset();
      return 0;
    }
    case effClose:
    {
      lock.Destroy();
      DELETE_NULL(_this);
      return 0;
    }
    case effGetParamLabel:
    {
      if (idx >= 0 && idx < _this->NParams())
      {
        strcpy((char*) ptr, _this->GetParam(idx)->GetLabelForHost());
      }
      return 0;
    }
    case effGetParamDisplay:
    {
      if (idx >= 0 && idx < _this->NParams())
      {
        _this->GetParam(idx)->GetDisplayForHost((char*) ptr);
      }
      return 0;
    }
    case effGetParamName:
    {
      if (idx >= 0 && idx < _this->NParams())
      {
        strcpy((char*) ptr, _this->GetParam(idx)->GetNameForHost());
      }
      return 0;
    }
      //could implement effGetParameterProperties to group parameters, but can't find a host that supports it
//    case effGetParameterProperties:
//    {
//      if (idx >= 0 && idx < _this->NParams())
//      {
//        VstParameterProperties* props = (VstParameterProperties*) ptr;
//        
//        props->flags = kVstParameterSupportsDisplayCategory;
//        props->category = idx+1;
//        props->numParametersInCategory = 1;
//        strcpy(props->categoryLabel, "test");
//      }
//      return 1;
//    }
    case effGetParameterProperties:
    {
      if (idx >= 0 && idx < _this->NParams())
      {
        VstParameterProperties* props = (VstParameterProperties*) ptr;
        props->flags = 0;
        IParam* pParam = _this->GetParam(idx);
        if (pParam->Type() == IParam::kTypeBool) {
          props->flags |= kVstParameterIsSwitch;
        }
        if (pParam->Type() == IParam::kTypeEnum || pParam->Type() == IParam::kTypeInt) {
          props->flags |= kVstParameterUsesFloatStep;
          int possibleValuesCount = (int) (pParam->GetMax() - pParam->GetMin());
          props->stepFloat = 1.0 / possibleValuesCount;
          props->smallStepFloat = props->stepFloat;
          props->largeStepFloat = props->stepFloat;
        }
      }
      return 1;
    }
    case effString2Parameter:
    {
      if (idx >= 0 && idx < _this->NParams())
      {
        if (ptr)
//.........这里部分代码省略.........

void IPlugProcess::EffectInit()
{
  TRACE;

  if (mPlug)
  {
    AddControl(new CPluginControl_OnOff('bypa', "Master Bypass\nMastrByp\nMByp\nByp", false, true)); // Default to off
    DefineMasterBypassControlIndex(1);

    int paramCount = mPlug->NParams();

    for (int i=0; i<paramCount; i++)
    {
      IParam *p = mPlug->GetParam(i);

      switch (p->Type())
      {
        case IParam::kTypeDouble:
          AddControl(new CPluginControl_Linear(' ld '+i, p->GetNameForHost(), p->GetMin(), p->GetMax(), p->GetStep(), p->GetDefault(), p->GetCanAutomate()));
          break;
        case IParam::kTypeInt:
          AddControl(new CPluginControl_Discrete(' ld '+i, p->GetNameForHost(), (long) p->GetMin(), (long) p->GetMax(), (long) p->GetDefault(), p->GetCanAutomate()));
          break;
        case IParam::kTypeEnum:
        case IParam::kTypeBool:
        {
          std::vector<std::string> displayTexts;
          
          for (int j=0; j<p->GetNDisplayTexts(); j++)
          {
            displayTexts.push_back(p->GetDisplayTextAtIdx(j));
          }

          assert(displayTexts.size());
          AddControl(new CPluginControl_List(' ld '+i, p->GetNameForHost(), displayTexts, (long) p->GetDefault(), p->GetCanAutomate()));
          break;
        }
        default:
          break;
      }

    }

#if PLUG_DOES_MIDI
    if (!IsAS())
    {
      ComponentResult result = noErr;

      Cmn_Int32 requestedVersion = 7;

      std::string midiNodeName(PLUG_NAME" Midi");

      while (requestedVersion)
      {
        result = DirectMidi_RegisterClient(requestedVersion, this, reinterpret_cast<Cmn_UInt32>(this), (void **)&mDirectMidiInterface);

        if (result == noErr && mDirectMidiInterface != NULL)
        {
          mDirectMidiInterface->CreateRTASBufferedMidiNode(0, const_cast<char *>(midiNodeName.c_str()), 1);

          break;
        }

        requestedVersion--;
      }
    }
#endif

    mPlug->SetIO(GetNumInputs(), GetNumOutputs());
    mPlug->SetSampleRate(GetSampleRate());
    mPlug->Reset();
  }
}

tresult PLUGIN_API IPlugVST3::initialize (FUnknown* context)
{
  TRACE;
  
  tresult result = SingleComponentEffect::initialize (context);
  
  if (result == kResultOk)
  {
    addAudioInput (STR16("Audio Input"), getSpeakerArrForChans(NInChannels()) );
    addAudioOutput (STR16("Audio Output"), getSpeakerArrForChans(NOutChannels()) );
    
    if (mScChans == 1)
      addAudioInput(STR16("Sidechain Input"), SpeakerArr::kMono, kAux, 0);
    else if (mScChans >= 2)
    {
      mScChans = 2;
      addAudioInput(STR16("Sidechain Input"), SpeakerArr::kStereo, kAux, 0);
    }
        
    if(mDoesMidi) {
      addEventInput (STR16("MIDI In"), 1);
      addEventOutput(STR16("MIDI Out"), 1);
    }
    
    for (int i=0;i<NParams();i++)
    {
      IParam *p = GetParam(i);
      
      int32 flags = 0;
      
      if (p->GetCanAutomate()) {
        flags |= ParameterInfo::kCanAutomate;
      }
            
      switch (p->Type()) {
        case IParam::kTypeDouble:
        case IParam::kTypeInt:
        {
          Parameter* param = new RangeParameter ( STR16(p->GetNameForHost()), 
                                                  i, 
                                                  STR16(p->GetLabelForHost()), 
                                                  p->GetMin(), 
                                                  p->GetMax(), 
                                                  p->GetDefault(),
                                                  p->GetStep(),
                                                  flags);
          
          param->setPrecision (p->GetPrecision());
          parameters.addParameter (param);

          break;
        }
        case IParam::kTypeEnum:
        case IParam::kTypeBool: 
        {
          StringListParameter* param = new StringListParameter (STR16(p->GetNameForHost()), 
                                                                i,
                                                                STR16(p->GetLabelForHost()),
                                                                flags | ParameterInfo::kIsList);
          
          int nDisplayTexts = p->GetNDisplayTexts();
          
          assert(nDisplayTexts);

          for (int j=0; j<nDisplayTexts; j++) 
          {
            param->appendString(STR16(p->GetDisplayText(j)));
          }
          
          parameters.addParameter (param);
          break; 
        }
        default:
          break;
      }
      
    }
  }
  
  return result;
}

//.........这里部分代码省略.........
                                            STR16(""),
                                            0,
                                            NPresets(),
                                            ParameterInfo::kIsProgramChange));
    }

    if(!mIsInst)
    {
      StringListParameter * bypass = new StringListParameter(STR16("Bypass"),
                                                            kBypassParam,
                                                            0,
                                                            ParameterInfo::kCanAutomate | ParameterInfo::kIsBypass | ParameterInfo::kIsList);
      bypass->appendString(STR16("off"));
      bypass->appendString(STR16("on"));
      parameters.addParameter(bypass);
    }

    for (int i=0; i<NParams(); i++)
    {
      IParam *p = GetParam(i);

      int32 flags = 0;
      UnitID unitID = kRootUnitId;
      
      const char* paramGroupName = p->GetParamGroupForHost();

      if (CSTR_NOT_EMPTY(paramGroupName))
      {        
        for(int j = 0; j < mParamGroups.GetSize(); j++)
        {
          if(strcmp(paramGroupName, mParamGroups.Get(j)) == 0)
          {
            unitID = j+1;
          }
        }
        
        if (unitID == kRootUnitId) // new unit, nothing found, so add it
        {
          mParamGroups.Add(paramGroupName);
          unitID = mParamGroups.GetSize();
        }
      }

      if (p->GetCanAutomate())
      {
        flags |= ParameterInfo::kCanAutomate;
      }

      switch (p->Type())
      {
        case IParam::kTypeDouble:
        case IParam::kTypeInt:
        {
          Parameter* param = new RangeParameter( STR16(p->GetNameForHost()),
                                                 i,
                                                 STR16(p->GetLabelForHost()),
                                                 p->GetMin(),
                                                 p->GetMax(),
                                                 p->GetDefault(),
                                                 0, // continuous
                                                 flags,
                                                 unitID);

          param->setPrecision (p->GetPrecision());
          parameters.addParameter(param);

          break;
        }
        case IParam::kTypeEnum:
        case IParam::kTypeBool:
        {
          StringListParameter* param = new StringListParameter (STR16(p->GetNameForHost()),
                                                                i,
                                                                STR16(p->GetLabelForHost()),
                                                                flags | ParameterInfo::kIsList,
                                                                unitID);

          int nDisplayTexts = p->GetNDisplayTexts();

          assert(nDisplayTexts);

          for (int j=0; j<nDisplayTexts; j++)
          {
            param->appendString(STR16(p->GetDisplayText(j)));
          }

          parameters.addParameter(param);
          break;
        }
        default:
          break;
      }
    }
  }

  OnHostIdentified();
  RestorePreset(0);
  
  return result;
}

AAX_Result IPlugAAX::EffectInit()
{ 
  TRACE;

  AAX_CString bypassID = NULL;
  this->GetMasterBypassParameter( &bypassID );
  mBypassParameter = new AAX_CParameter<bool>(bypassID.CString(), 
                                              AAX_CString("Master Bypass"), 
                                              false, 
                                              AAX_CBinaryTaperDelegate<bool>(),
                                              AAX_CBinaryDisplayDelegate<bool>("bypass", "on"), 
                                              true);
  mBypassParameter->SetNumberOfSteps( 2 );
  mBypassParameter->SetType( AAX_eParameterType_Discrete );
  mParameterManager.AddParameter(mBypassParameter);
      
  for (int i=0;i<NParams();i++)
  {
    IParam *p = GetParam(i);
    AAX_IParameter* param = 0;
    
    WDL_String* paramID = new WDL_String("_", 1);
    paramID->SetFormatted(32, "%i", i+kAAXParamIdxOffset);
    mParamIDs.Add(paramID);
    
    switch (p->Type()) 
    {
      case IParam::kTypeDouble:
      {
        param = new AAX_CParameter<double>(paramID->Get(), 
                                          AAX_CString(p->GetNameForHost()), 
                                          p->GetDefault(), 
                                          AAX_CIPlugTaperDelegate<double>(p->GetMin(), p->GetMax(), p->GetShape()),
                                          AAX_CUnitDisplayDelegateDecorator<double>( AAX_CNumberDisplayDelegate<double>(), AAX_CString(p->GetLabelForHost())), 
                                          p->GetCanAutomate());
        
        param->SetNumberOfSteps(128); // TODO: check this https://developer.digidesign.com/index.php?L1=5&L2=13&L3=56
        param->SetType(AAX_eParameterType_Continuous);

        break;
      }
      case IParam::kTypeInt:
      {
        param = new AAX_CParameter<int>(paramID->Get(), 
                                        AAX_CString(p->GetNameForHost()), 
                                        (int)p->GetDefault(), 
                                        AAX_CLinearTaperDelegate<int>((int)p->GetMin(), (int)p->GetMax()), 
                                        AAX_CUnitDisplayDelegateDecorator<int>( AAX_CNumberDisplayDelegate<int>(), AAX_CString(p->GetLabelForHost())), 
                                        p->GetCanAutomate());
        
        param->SetNumberOfSteps(128);
        param->SetType(AAX_eParameterType_Continuous);

        break;
      }
      case IParam::kTypeEnum:
      case IParam::kTypeBool: 
      {
        int nTexts = p->GetNDisplayTexts();
        
        std::map<int, AAX_CString> displayTexts;
        
        for (int j=0; j<p->GetNDisplayTexts(); j++) 
        {
          int value;
          const char* text = p->GetDisplayTextAtIdx(j, &value);
          
          displayTexts.insert(std::pair<int, AAX_CString>(value, AAX_CString(text)) );
        }
        
        param = new AAX_CParameter<int>(paramID->Get(), 
                                        AAX_CString(p->GetNameForHost()), 
                                        (int)p->GetDefault(), 
                                        AAX_CLinearTaperDelegate<int>((int)p->GetMin(), (int)p->GetMax()), 
                                        AAX_CStringDisplayDelegate<int>(displayTexts),
                                        p->GetCanAutomate());
        
        param->SetNumberOfSteps(nTexts);
        param->SetType(AAX_eParameterType_Discrete);
                
        break; 
      }
      default:
        break;
    }
    
    mParameterManager.AddParameter(param);    
  }
  
  AAX_CSampleRate sr;
  Controller()->GetSampleRate(&sr);
  SetSampleRate(sr);
  Reset();
  
  return AAX_SUCCESS;
}