Loading .vstpresets in VST3 plugins do not load correctly

reuk · July 29, 2021, 5:07pm

There are now dedicated methods for reading/writing VST3 preset files:

juce-framework/JUCE/blob/develop/modules/juce_audio_processors/utilities/juce_ExtensionsVisitor.h#L52

    
      
          struct ExtensionsVisitor

          {

              struct Unknown {};

          

              /** Can be used to retrieve information about a VST3 that is wrapped by an AudioProcessor. */

              struct VST3Client

              {

                  virtual ~VST3Client() = default;

                  virtual void* getIComponentPtr() const noexcept = 0;

          

                  virtual MemoryBlock getPreset() const = 0;

                  virtual bool setPreset (const MemoryBlock&) const = 0;

              };

          

              /** Can be used to retrieve information about an AudioUnit that is wrapped by an AudioProcessor. */

              struct AudioUnitClient

              {

                  virtual ~AudioUnitClient() = default;

                  virtual void* getAudioUnitHandle() const noexcept = 0;

              };

To use this, create a derived implementation of ExtensionsVisitor and pass it to AudioPluginInstance::getExtensions. The plugin instance will call visitVST3Client on your extensions instance, and you can then call setPreset on the provided VST3Client argument.

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Loading .vstpresets in VST3 plugins do not load correctly

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