Introduce VST plugin information.

4 files changed, 109 insertions, 7 deletions

diff --git a/plugin.h b/plugin.h
index 7864bb9..6519827 100644
--- a/plugin.h
+++ b/plugin.h
@@ -33,6 +33,23 @@
 
 class MidiEvent;
 
+//! Contains the same plugin categories as the VST enum VstPlugCategory
+enum class PluginCategory
+{
+	Unknown = 0,    // Unknown, category not implemented
+	Effect,         // Simple Effect
+	Synth,          // VST Instrument (Synths, samplers,...)
+	Analysis,       // Scope, Tuner, ...
+	Mastering,      // Dynamics, ...
+	Spacializer,    // Panners, ...
+	RoomFx,         // Delays and Reverbs
+	SurroundFx,     // Dedicated surround processor
+	Restoration,    // Denoiser, ...
+	OfflineProcess, // Offline Process
+	Shell,          // Plug-in is container of other plug-ins
+	Generator       // ToneGenerator, ...
+};
+
 //! Abstract base-class for plugin implementations.
 class Plugin {
 public:
@@ -46,7 +63,7 @@ public:
 	virtual bool getFreeWheel() const = 0;
 
 	//! This method is called by the host when the free-wheel mode changes.
-	virtual void onFreeWheelChange(bool freewheel) = 0;
+	virtual void onFreeWheelChange(bool freewheel) {}
 
 
 	//! Call this to get current samplerate.
@@ -106,6 +123,12 @@ public:
 	//! Get unique plugin id.
 	virtual std::string getId() = 0;
 
+	// Functions used to set plugin information for VST 
+	virtual std::string effectName() = 0;
+	virtual std::string vendorString() = 0;
+	virtual std::string productString() = 0;
+	virtual PluginCategory pluginCategory() = 0;
+
 	//! Process callback.
 	virtual void process(std::size_t pos,
 	                     const std::vector<MidiEvent>& input_events,
diff --git a/pluginlv2.h b/pluginlv2.h
index a1408fa..2c91dcc 100644
--- a/pluginlv2.h
+++ b/pluginlv2.h
@@ -54,9 +54,6 @@ public:
 	//! Get current free-wheel mode.
 	bool getFreeWheel() const override;
 
-	//! This method is called by the host when the free-wheel mode changes.
-	virtual void onFreeWheelChange(bool freewheel) override = 0;
-
 
 	//! Call this to get current samplerate.
 	float getSamplerate() override;
@@ -115,6 +112,12 @@ public:
 	//! Get unique plugin id.
 	std::string getId() override = 0;
 
+	// Functions used to set plugin information for VST 
+	std::string effectName() override = 0;
+	std::string vendorString() override = 0;
+	std::string productString() override = 0;
+	PluginCategory pluginCategory() override = 0;
+
 	virtual void process(std::size_t pos,
 	                     const std::vector<MidiEvent>& input_events,
 	                     std::vector<MidiEvent>& output_events,
diff --git a/pluginvst.cc b/pluginvst.cc
index 7de518e..66dc9b7 100644
--- a/pluginvst.cc
+++ b/pluginvst.cc
@@ -133,6 +133,9 @@ void PluginVST::init()
 
 	AudioEffectX::isSynth(getNumberOfMidiInputs() > 0);
 
+	// We might produce output when there is no input.
+	AudioEffectX::noTail(false);
+
 	if(hasGUI())
 	{
 		editor = std::make_shared<UI>(*this);
@@ -217,6 +220,55 @@ void PluginVST::setBlockSize(VstInt32 blockSize)
 	onFramesizeChange(blockSize);
 }
 
+bool PluginVST::getEffectName(char* name)
+{
+	vst_strncpy (name, this->effectName().c_str(), kVstMaxEffectNameLen);
+	return true;
+}
+
+bool PluginVST::getVendorString(char* text)
+{
+	vst_strncpy (text, this->vendorString().c_str(), kVstMaxVendorStrLen);
+	return true;
+}
+
+bool PluginVST::getProductString(char* text)
+{
+	vst_strncpy (text, this->productString().c_str(), kVstMaxProductStrLen);
+	return true;
+}
+
+VstPlugCategory PluginVST::getPlugCategory()
+{
+	switch(this->pluginCategory())
+	{
+	case PluginCategory::Unknown:
+		return kPlugCategUnknown;
+	case PluginCategory::Effect:
+		return kPlugCategEffect;
+	case PluginCategory::Synth:
+		return kPlugCategSynth;
+	case PluginCategory::Analysis:
+		return kPlugCategAnalysis;
+	case PluginCategory::Mastering:
+		return kPlugCategMastering;
+	case PluginCategory::Spacializer:
+		return kPlugCategSpacializer;
+	case PluginCategory::RoomFx:
+		return kPlugCategRoomFx;
+	case PluginCategory::SurroundFx:
+		return kPlugSurroundFx;
+	case PluginCategory::Restoration:
+		return kPlugCategRestoration;
+	case PluginCategory::OfflineProcess:
+		return kPlugCategOfflineProcess;
+	case PluginCategory::Shell:
+		return kPlugCategShell;
+	case PluginCategory::Generator:
+		return kPlugCategGenerator;
+	}
+}
+
 VstInt32 PluginVST::processEvents(VstEvents* events)
 {
 	// For each process cycle, processEvents() is called once before a
diff --git a/pluginvst.h b/pluginvst.h
index 2ae746a..e65a2ef 100644
--- a/pluginvst.h
+++ b/pluginvst.h
@@ -50,9 +50,6 @@ public:
 	//! Get current free-wheel mode.
 	bool getFreeWheel() const override;
 
-	//! This method is called by the host when the free-wheel mode changes.
-	virtual void onFreeWheelChange(bool freewheel) override = 0;
-
 
 	//! Call this to get current samplerate.
 	float getSamplerate() override;
@@ -109,9 +106,36 @@ public:
 	virtual std::size_t getNumberOfMidiOutputs() override = 0;
 
 
+
+	// VST plugin information
+
 	//! Get unique plugin id.
 	std::string getId() override = 0;
 
+	// Functions used to set plugin information for VST 
+	
+	//! Returns value which is then used by getEffectName
+	std::string effectName() override = 0;
+	//! Returns value which is then used by getVendorString
+	std::string vendorString() override = 0;
+	//! Returns value which is then used by getProductString
+	std::string productString() override = 0;
+	//! Returns value which is then used by getPlugCategory
+	PluginCategory pluginCategory() override = 0;
+
+	//! Fill \e text with a string identifying the effect
+	bool getEffectName(char* name);
+	
+	//! Fill \e text with a string identifying the vendor
+	bool getVendorString(char* text);
+
+	//! Fill \e text with a string identifying the product name
+	bool getProductString(char* text);
+
+	//! Specify a category that fits the plug (#VstPlugCategory)
+	virtual VstPlugCategory getPlugCategory() override;
+
+
 	virtual void process(std::size_t pos,
 	                     const std::vector<MidiEvent>& input_events,
 	                     std::vector<MidiEvent>& output_events,