LV2InstanceFeaturesList.h

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/**********************************************************************
 
  Audacity: A Digital Audio Editor
 
  @file LV2InstanceFeaturesList.h
 
  Paul Licameli split from LV2Effect.h
 
  Audacity(R) is copyright (c) 1999-2013 Audacity Team.
  License: GPL v2 or later.  See License.txt.
 
*********************************************************************/
 
#ifndef __AUDACITY_LV2_INSTANCE_FEATURES_LIST__
#define __AUDACITY_LV2_INSTANCE_FEATURES_LIST__
 
#if USE_LV2
 
#include "LV2FeaturesList.h"
#include "Callable.h"
#include "GlobalVariable.h"
#include "lv2/options/options.h"
#include "lv2/worker/worker.h"
 
struct LV2_API LV2InstanceFeaturesList final : ExtendedLV2FeaturesList {
   struct LV2_API ValidatePlugin : DefaultedGlobalHook<ValidatePlugin,
      Callable::Constantly<true, const LilvPlugin &, LV2InstanceFeaturesList &>
         ::Function
   >{};
 
   explicit LV2InstanceFeaturesList(
      const LV2FeaturesList &baseFeatures);
 
   const LV2FeaturesList &Base() const {
      return static_cast<const LV2FeaturesList&>(mBaseFeatures);
   }
 
   bool InitializeOptions();
 
   const LV2_Options_Option *NominalBlockLengthOption() const;
 
   size_t AddOption(LV2_URID, uint32_t size, LV2_URID, const void *value);
 
   bool ValidateOptions(const LilvNode *subject);
 
   bool CheckOptions(const LilvNode *subject, bool required);
 
   std::vector<LV2_Options_Option> mOptions;
   size_t mBlockSizeOption{};
 
   size_t mBlockSize{ LV2Preferences::DEFAULT_BLOCKSIZE };
   int mSeqSize{ DEFAULT_SEQSIZE };
 
   bool mSupportsNominalBlockLength{ false };
 
   size_t mMinBlockSize{ 1 };
   size_t mMaxBlockSize{ mBlockSize };
   float mSampleRate{ 44100.0f };
 
   const bool mOk;
};
 
struct LV2_API LV2WrapperFeaturesList final : ExtendedLV2FeaturesList {
   LV2WrapperFeaturesList(
      LV2InstanceFeaturesList &baseFeatures, float sampleRate = 44100.0f,
      const LV2_Worker_Schedule *pWorkerSchedule = nullptr);
 
   const LV2InstanceFeaturesList &Base() const {
      return static_cast<const LV2InstanceFeaturesList&>(mBaseFeatures);
   }
};
 
#endif
#endif