Update plugin classification

* dedicated API for classes (effect, instrument, util)
* prepare for tags (rather than categories)
* prepare removal of per-plugin in_category() API

libs/ardour/ardour/audio_unit.h

@@ -251,10 +251,13 @@ class LIBARDOUR_API AUPluginInfo : public PluginInfo {
 	std::vector<Plugin::PresetRecord> get_presets (bool user_only) const;
 
 	bool needs_midi_input () const;
-	bool is_effect () const;
 	bool is_effect_without_midi_input () const;
 	bool is_effect_with_midi_input () const;
+
+	/* note: AU's have an explicit way to prompt for instrument/fx category */
+	bool is_effect () const;
 	bool is_instrument () const;
+	bool is_utility () const;
 
 	AUPluginCachedInfo cache;
 

libs/ardour/ardour/ladspa_plugin.h

@@ -151,6 +151,13 @@ class LIBARDOUR_API LadspaPluginInfo : public PluginInfo {
 	LadspaPluginInfo ();
 	~LadspaPluginInfo () { };
 
+	bool is_instrument () const { return false; } /* ladspa's are never instruments */
+#ifdef MIXBUS
+	/* for mixbus, relegate ladspa's to the Utils folder. */
+	bool is_effect () const { return false; }
+	bool is_utility () const { return true; }
+#endif
+
 	PluginPtr load (Session& session);
 	std::vector<Plugin::PresetRecord> get_presets (bool user_only) const;
 };

libs/ardour/ardour/luaproc.h

@@ -208,13 +208,7 @@ class LIBARDOUR_API LuaPluginInfo : public PluginInfo
 	PluginPtr load (Session& session);
 	std::vector<Plugin::PresetRecord> get_presets (bool user_only) const;
 
-	bool in_category (const std::string &c) const {
-		return (category == c);
-	}
-	bool is_instrument () const { return _is_instrument; }
 	bool reconfigurable_io() const { return true; }
-
-	bool _is_instrument;
 };
 
 typedef boost::shared_ptr<LuaPluginInfo> LuaPluginInfoPtr;

libs/ardour/ardour/lv2_plugin.h

@@ -364,8 +364,6 @@ public:
 
 	PluginPtr load (Session& session);
 	std::vector<Plugin::PresetRecord> get_presets (bool user_only) const;
-	virtual bool in_category (const std::string &c) const;
-	virtual bool is_instrument() const;
 
 	char * _plugin_uri;
 };

libs/ardour/ardour/plugin.h

@@ -425,9 +425,17 @@ class LIBARDOUR_API PluginInfo {
 	std::string unique_id;
 
 	virtual PluginPtr load (Session& session) = 0;
-	virtual bool is_instrument() const;
+
+	/* NOTE: it is possible for a plugin to be an effect AND an instrument.
+	 * override these funcs as necessary to support that.
+	 */
+	virtual bool is_effect () const;
+	virtual bool is_instrument () const;
+	virtual bool is_utility () const;  //this includes things like "generators" and "midi filters"
+	virtual bool is_analyzer () const;
+
 	virtual bool needs_midi_input() const;
-	virtual bool in_category (const std::string &) const { return false; }
+	virtual bool in_category (const std::string &) const { return false; } // deprecated
 
 	virtual std::vector<Plugin::PresetRecord> get_presets (bool user_only) const = 0;
 

libs/ardour/ardour/plugin_insert.h

@@ -176,7 +176,9 @@ public:
 
 	bool has_no_inputs() const;
 	bool has_no_audio_inputs() const;
+
 	bool is_instrument () const;
+
 	bool has_output_presets (
 			ChanCount in = ChanCount (DataType::MIDI, 1),
 			ChanCount out = ChanCount (DataType::AUDIO, 2)

libs/ardour/audio_unit.cc

@@ -38,13 +38,13 @@
 #include <glibmm/miscutils.h>
 
 #include "ardour/ardour.h"
+#include "ardour/audio_unit.h"
 #include "ardour/audioengine.h"
 #include "ardour/audio_buffer.h"
 #include "ardour/debug.h"
-#include "ardour/midi_buffer.h"
 #include "ardour/filesystem_paths.h"
 #include "ardour/io.h"
-#include "ardour/audio_unit.h"
+#include "ardour/midi_buffer.h"
 #include "ardour/route.h"
 #include "ardour/session.h"
 #include "ardour/tempo.h"
@@ -2916,14 +2916,14 @@ AUPluginInfo::discover_by_description (PluginInfoList& plugs, CAComponentDescrip
 			continue;
 
 		case kAudioUnitType_Output:
-			info->category = _("AudioUnit Output");
+			info->category = _("Output");
 			break;
 		case kAudioUnitType_MusicDevice:
 			info->category = _("Instrument");
 			has_midi_in = true;
 			break;
 		case kAudioUnitType_MusicEffect:
-			info->category = _("Music Effect");
+			info->category = _("Effect");
 			has_midi_in = true;
 			break;
 		case kAudioUnitType_Effect:
@@ -2936,7 +2936,7 @@ AUPluginInfo::discover_by_description (PluginInfoList& plugs, CAComponentDescrip
 			info->category = _("Generator");
 			break;
 		default:
-			info->category = _("AudioUnit (Unknown)");
+			info->category = _("(Unknown)");
 			break;
 		}
 
@@ -3310,6 +3310,13 @@ AUPluginInfo::is_instrument () const
 	return descriptor->IsMusicDevice();
 }
 
+bool
+AUPluginInfo::is_utility () const
+{
+	return (descriptor->IsGenerator() || descriptor->componentType == 'aumi');
+	// kAudioUnitType_MidiProcessor  ..looks like we aren't even scanning for these yet?
+}
+
 void
 AUPlugin::set_info (PluginInfoPtr info)
 {

libs/ardour/luaproc.cc

@@ -1228,7 +1228,6 @@ LuaPluginInfo::LuaPluginInfo (LuaScriptInfoPtr lsi) {
 	n_outputs.set (DataType::AUDIO, 1);
 	type = Lua;
 
-	_is_instrument = category == "Instrument";
 }
 
 PluginPtr

libs/ardour/lv2_plugin.cc

@@ -3411,31 +3411,6 @@ LV2PluginInfo::get_presets (bool /*user_only*/) const
 	return p;
 }
 
-bool
-LV2PluginInfo::in_category (const std::string &c) const
-{
-	// TODO use untranslated lilv_plugin_get_class()
-	// match gtk2_ardour/plugin_selector.cc
-	return category == c;
-}
-
-bool
-LV2PluginInfo::is_instrument () const
-{
-	if (category == "Instrument") {
-		return true;
-	}
-#if 1
-	/* until we make sure that category remains untranslated in the lv2.ttl spec
-	 * and until most instruments also classify themselves as such, there's a 2nd check:
-	 */
-	if (n_inputs.n_midi() > 0 && n_inputs.n_audio() == 0 && n_outputs.n_audio() > 0) {
-		return true;
-	}
-#endif
-	return false;
-}
-
 PluginInfoList*
 LV2PluginInfo::discover()
 {

libs/ardour/plugin.cc

@@ -87,12 +87,6 @@ PluginInfo::needs_midi_input () const
 	return (n_inputs.n_midi() != 0);
 }
 
-bool
-PluginInfo::is_instrument () const
-{
-	return (n_inputs.n_midi() != 0) && (n_outputs.n_audio() > 0) && (n_inputs.n_audio() == 0);
-}
-
 Plugin::Plugin (AudioEngine& e, Session& s)
 	: _engine (e)
 	, _session (s)
@@ -526,3 +520,33 @@ Plugin::parameter_label (uint32_t which) const
 	get_parameter_descriptor (which, pd);
 	return pd.label;
 }
+
+bool
+PluginInfo::is_effect () const
+{
+	return (!is_instrument () && !is_utility ()  && !is_analyzer ());
+}
+
+bool
+PluginInfo::is_instrument () const
+{
+	if (category == "Instrument") {
+		return true;
+	}
+
+	// second check: if we have  midi input and audio output, we're likely an instrument
+	return (n_inputs.n_midi() != 0) && (n_outputs.n_audio() > 0) && (n_inputs.n_audio() == 0);
+}
+
+bool
+PluginInfo::is_utility () const
+{
+	/* XXX beware of translations, e.g. LV2 categories */
+	return (category == "Utility" || category == "MIDI" || category == "Generator");
+}
+
+bool
+PluginInfo::is_analyzer () const
+{
+	return (category == "Analyser" || category == "Anaylsis" || category == "Analyzer");
+}

libs/ardour/plugin_insert.cc

@@ -386,10 +386,7 @@ bool
 PluginInsert::is_instrument() const
 {
 	PluginInfoPtr pip = _plugins[0]->get_info();
-	if (pip->is_instrument ()) {
-		return true;
-	}
-	return pip->n_inputs.n_midi () != 0 && pip->n_outputs.n_audio () > 0 && pip->n_inputs.n_audio () == 0;
+	return (pip->is_instrument ());
 }
 
 bool

libs/ardour/plugin_manager.cc

@@ -984,7 +984,7 @@ PluginManager::windows_vst_discover (string path, bool cache_only)
 
 		snprintf (buf, sizeof (buf), "%d", finfo->UniqueID);
 		info->unique_id = buf;
-		info->category = "VST";
+		info->category = finfo->category;
 		info->path = path;
 		info->creator = finfo->creator;
 		info->index = 0;
@@ -1121,7 +1121,7 @@ PluginManager::mac_vst_discover (string path, bool cache_only)
 
 		snprintf (buf, sizeof (buf), "%d", finfo->UniqueID);
 		info->unique_id = buf;
-		info->category = "MacVST";
+		info->category = finfo->Category;
 		info->path = path;
 		info->creator = finfo->creator;
 		info->index = 0;
@@ -1240,7 +1240,7 @@ PluginManager::lxvst_discover (string path, bool cache_only)
 
 		snprintf (buf, sizeof (buf), "%d", finfo->UniqueID);
 		info->unique_id = buf;
-		info->category = "linuxVSTs";
+		info->category = finfo->Category;
 		info->path = path;
 		info->creator = finfo->creator;
 		info->index = 0;

libs/ardour/vst_info_file.cc

@@ -314,7 +314,7 @@ vstfx_load_info_block (FILE* fp, VSTInfo *info)
 
 	// TODO read isInstrument -- effFlagsIsSynth
 	info->isInstrument = info->numInputs == 0 && info->numOutputs > 0 && 1 == (info->wantMidi & 1);
-	if (!strcmp (info->Category, "Synth")) {
+	if (!strcmp (info->Category, "Instrument")) {
 		info->isInstrument = true;
 	}