Tweak/optimize VST callback:
The audioMasterAutomate callback from plugin to host does include the parameter-value. Previously there was a redundant call Plugin::parameter_changed_externally() -> get_parameter -> VSTPlugin::get_parameter() back into the plugin to query the value. calling back into the plugin from the callback, may explain oddities and/or crashes with some VSTs.
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@ -333,7 +333,7 @@ protected:
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/* Called when a parameter of the plugin is changed outside of this
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* host's control (typical via a plugin's own GUI/editor)
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*/
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void parameter_changed_externally (uint32_t which, float val);
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virtual void parameter_changed_externally (uint32_t which, float val);
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/* should be overridden by plugin API specific derived types to
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* actually implement changing the parameter. The derived type should
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@ -40,6 +40,7 @@ class PluginInsert;
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class LIBARDOUR_API VSTPlugin : public Plugin
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{
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public:
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friend class Session;
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VSTPlugin (AudioEngine &, Session &, VSTHandle *);
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VSTPlugin (const VSTPlugin& other);
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virtual ~VSTPlugin ();
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@ -99,6 +100,7 @@ public:
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protected:
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void parameter_changed_externally (uint32_t which, float val);
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void set_plugin (AEffect *);
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gchar* get_chunk (bool) const;
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int set_chunk (gchar const *, bool);
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@ -137,6 +137,14 @@ VSTPlugin::set_parameter (uint32_t which, float newval)
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}
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}
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void
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VSTPlugin::parameter_changed_externally (uint32_t which, float value )
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{
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ParameterChangedExternally (which, value); /* EMIT SIGNAL */
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Plugin::set_parameter (which, value);
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}
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uint32_t
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VSTPlugin::nth_parameter (uint32_t n, bool& ok) const
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{
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