anonymous_namespace{VST3Wrapper.cpp}::ComponentHandler Class Reference

Inheritance diagram for anonymous_namespace{VST3Wrapper.cpp}::ComponentHandler:

Collaboration diagram for anonymous_namespace{VST3Wrapper.cpp}::ComponentHandler:

Public Member Functions
	ComponentHandler (VST3Wrapper &wrapper)
virtual	~ComponentHandler ()
void	LoadCurrentParamValues ()
void	SetAccess (EffectSettingsAccess *access)
EffectSettingsAccess *	GetAccess ()
void	BeginStateChange (EffectSettings &settings)
void	EndStateChange ()
void	FlushCache (EffectSettings &settings)
void	ResetCache ()
void	NotifyParamChange (Steinberg::Vst::ParamID id, Steinberg::Vst::ParamValue valueNormalized)
Steinberg::tresult PLUGIN_API	beginEdit (Steinberg::Vst::ParamID id) override
Steinberg::tresult PLUGIN_API	performEdit (Steinberg::Vst::ParamID id, Steinberg::Vst::ParamValue valueNormalized) override
Steinberg::tresult PLUGIN_API	endEdit (Steinberg::Vst::ParamID id) override
Steinberg::tresult PLUGIN_API	restartComponent (Steinberg::int32 flags) override

Private Attributes
VST3Wrapper &	mWrapper
EffectSettingsAccess *	mAccess {nullptr}
const std::thread::id	mThreadId
EffectSettings *	mStateChangeSettings {nullptr}
std::map< Steinberg::Vst::ParamID, Steinberg::Vst::ParamValue >	mParametersCache
std::map< Steinberg::Vst::ParamID, Steinberg::Vst::ParamValue >	mCurrentParamValues

Detailed Description

Definition at line 244 of file VST3Wrapper.cpp.

Constructor & Destructor Documentation

ComponentHandler()

anonymous_namespace{VST3Wrapper.cpp}::ComponentHandler::ComponentHandler ( VST3Wrapper &  wrapper )

inline

Definition at line 257 of file VST3Wrapper.cpp.

      : mThreadId(std::this_thread::get_id()), mWrapper(wrapper)
   {
      FUNKNOWN_CTOR;
   }

~ComponentHandler()

virtual anonymous_namespace{VST3Wrapper.cpp}::ComponentHandler::~ComponentHandler ( )

inlinevirtual

Definition at line 262 of file VST3Wrapper.cpp.

{ FUNKNOWN_DTOR; }

Member Function Documentation

beginEdit()

Steinberg::tresult PLUGIN_API anonymous_namespace{VST3Wrapper.cpp}::ComponentHandler::beginEdit ( Steinberg::Vst::ParamID  id )

inlineoverride

Definition at line 337 of file VST3Wrapper.cpp.

{ return Steinberg::kResultOk; }

BeginStateChange()

void anonymous_namespace{VST3Wrapper.cpp}::ComponentHandler::BeginStateChange ( EffectSettings &  settings )

inline

Definition at line 286 of file VST3Wrapper.cpp.

   {
      mStateChangeSettings = &settings;
   }

References settings().

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endEdit()

Steinberg::tresult PLUGIN_API anonymous_namespace{VST3Wrapper.cpp}::ComponentHandler::endEdit ( Steinberg::Vst::ParamID  id )

inlineoverride

Definition at line 363 of file VST3Wrapper.cpp.

{ return Steinberg::kResultOk; }

EndStateChange()

void anonymous_namespace{VST3Wrapper.cpp}::ComponentHandler::EndStateChange ( )

inline

Definition at line 291 of file VST3Wrapper.cpp.

   {
      assert(mStateChangeSettings != nullptr);
      FlushCache(*mStateChangeSettings);
      mStateChangeSettings = nullptr;
   }

FlushCache()

void anonymous_namespace{VST3Wrapper.cpp}::ComponentHandler::FlushCache ( EffectSettings &  settings )

inline

Definition at line 298 of file VST3Wrapper.cpp.

   {
      if(mParametersCache.empty())
         return;
      
      auto& vst3settings = GetSettings(settings);
      for(auto& p : mParametersCache)
         vst3settings.parameterChanges[p.first] = p.second;
      mParametersCache.clear();
   }

References anonymous_namespace{VST3Wrapper.cpp}::GetSettings(), and settings().

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GetAccess()

EffectSettingsAccess * anonymous_namespace{VST3Wrapper.cpp}::ComponentHandler::GetAccess ( )

inline

Definition at line 284 of file VST3Wrapper.cpp.

{ return mAccess; }

LoadCurrentParamValues()

void anonymous_namespace{VST3Wrapper.cpp}::ComponentHandler::LoadCurrentParamValues ( )

inline

Definition at line 264 of file VST3Wrapper.cpp.

   {
      const auto paramsCount = mWrapper.mEditController->getParameterCount();
 
      for (int i = 0; i < paramsCount; ++i)
      {
         using Steinberg::Vst::ParameterInfo;
         ParameterInfo info {};
         mWrapper.mEditController->getParameterInfo(i, info);
 
         if ((info.flags & ParameterInfo::kIsReadOnly) != 0)
            continue;
         
         mCurrentParamValues[info.id] =
            mWrapper.mEditController->getParamNormalized(info.id);
      }
   }

References VST3Wrapper::mEditController.

NotifyParamChange()

void anonymous_namespace{VST3Wrapper.cpp}::ComponentHandler::NotifyParamChange ( Steinberg::Vst::ParamID  id, Steinberg::Vst::ParamValue  valueNormalized  )

inline

Definition at line 314 of file VST3Wrapper.cpp.

   {
      auto it = mCurrentParamValues.find(id);
 
      if (it == mCurrentParamValues.end())
         return;
 
      // Tolerance to avoid unnecessary updates
      // Waves plugins constantly update several parameters
      // with very small changes in the values without any
      // user input
      constexpr auto epsilon = Steinberg::Vst::ParamValue(1e-5);
 
      if (std::abs(it->second - valueNormalized) < epsilon)
         return;
 
      it->second = valueNormalized;
 
      if (mStateChangeSettings == nullptr && mWrapper.ParamChangedHandler)
         mWrapper.ParamChangedHandler(id, valueNormalized);
   }

References VST3Wrapper::ParamChangedHandler.

performEdit()

Steinberg::tresult PLUGIN_API anonymous_namespace{VST3Wrapper.cpp}::ComponentHandler::performEdit ( Steinberg::Vst::ParamID  id, Steinberg::Vst::ParamValue  valueNormalized  )

inlineoverride

Definition at line 339 of file VST3Wrapper.cpp.

   {
      if(std::this_thread::get_id() != mThreadId)
         return Steinberg::kResultFalse;
 
      NotifyParamChange(id, valueNormalized);
 
      if(mStateChangeSettings != nullptr || !mWrapper.IsActive())
         // Collecting edit callbacks from the plug-in, in response to changes
         // of complete state, while doing FetchSettings() (which may be delayed...)
         mParametersCache[id] = valueNormalized;
      else if(mAccess)
      {
         mAccess->ModifySettings([&](EffectSettings& settings)
         {
            auto& vst3settings = GetSettings(settings);
            vst3settings.parameterChanges[id] = valueNormalized;
            return nullptr;
         });
      }
 
      return Steinberg::kResultOk;
   }

References anonymous_namespace{VST3Wrapper.cpp}::GetSettings(), id, VST3Wrapper::IsActive(), and settings().

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ResetCache()

void anonymous_namespace{VST3Wrapper.cpp}::ComponentHandler::ResetCache ( )

inline

Definition at line 309 of file VST3Wrapper.cpp.

   {
      mParametersCache.clear();
   }

restartComponent()

Steinberg::tresult PLUGIN_API anonymous_namespace{VST3Wrapper.cpp}::ComponentHandler::restartComponent ( Steinberg::int32  flags )

inlineoverride

Definition at line 365 of file VST3Wrapper.cpp.

{ return Steinberg::kNotImplemented; }

SetAccess()

void anonymous_namespace{VST3Wrapper.cpp}::ComponentHandler::SetAccess ( EffectSettingsAccess *  access )

inline

Definition at line 282 of file VST3Wrapper.cpp.

{ mAccess = access; }

Member Data Documentation

mAccess

EffectSettingsAccess* anonymous_namespace{VST3Wrapper.cpp}::ComponentHandler::mAccess {nullptr}

private

Definition at line 247 of file VST3Wrapper.cpp.

mCurrentParamValues

std::map<Steinberg::Vst::ParamID, Steinberg::Vst::ParamValue> anonymous_namespace{VST3Wrapper.cpp}::ComponentHandler::mCurrentParamValues

private

Definition at line 253 of file VST3Wrapper.cpp.

mParametersCache

std::map<Steinberg::Vst::ParamID, Steinberg::Vst::ParamValue> anonymous_namespace{VST3Wrapper.cpp}::ComponentHandler::mParametersCache

private

Definition at line 252 of file VST3Wrapper.cpp.

mStateChangeSettings

EffectSettings* anonymous_namespace{VST3Wrapper.cpp}::ComponentHandler::mStateChangeSettings {nullptr}

private

Definition at line 251 of file VST3Wrapper.cpp.

mThreadId

const std::thread::id anonymous_namespace{VST3Wrapper.cpp}::ComponentHandler::mThreadId

private

Definition at line 249 of file VST3Wrapper.cpp.

mWrapper

VST3Wrapper& anonymous_namespace{VST3Wrapper.cpp}::ComponentHandler::mWrapper

private

Definition at line 246 of file VST3Wrapper.cpp.

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The documentation for this class was generated from the following file:

• VST3Wrapper.cpp