Save plugin options in projects, added ENGINE_CALLBACK_OPTION_CHANGED

source/backend/CarlaBackend.h

@@ -729,6 +729,15 @@ typedef enum {
      */
     ENGINE_CALLBACK_MIDI_PROGRAM_CHANGED = 10,
 
+    /*!
+     * A plugin option has changed.
+     * @param pluginId Plugin Id
+     * @param value1   Option
+     * @param value2   New on/off state (1 for on, 0 for off)
+     * @see PluginOptions
+     */
+    ENGINE_CALLBACK_OPTION_CHANGED = 11,
+
     /*!
      * A plugin's custom UI state has changed.
      * @param pluginId Plugin Id
@@ -737,7 +746,7 @@ typedef enum {
      *                  1: UI is now visible\n
      *                 -1: UI has crashed and should not be shown again
      */
-    ENGINE_CALLBACK_UI_STATE_CHANGED = 11,
+    ENGINE_CALLBACK_UI_STATE_CHANGED = 12,
 
     /*!
      * A note has been pressed.
@@ -746,7 +755,7 @@ typedef enum {
      * @param value2   Note
      * @param value3   Velocity
      */
-    ENGINE_CALLBACK_NOTE_ON = 12,
+    ENGINE_CALLBACK_NOTE_ON = 13,
 
     /*!
      * A note has been released.
@@ -754,37 +763,37 @@ typedef enum {
      * @param value1   Channel
      * @param value2   Note
      */
-    ENGINE_CALLBACK_NOTE_OFF = 13,
+    ENGINE_CALLBACK_NOTE_OFF = 14,
 
     /*!
      * A plugin needs update.
      * @param pluginId Plugin Id
      */
-    ENGINE_CALLBACK_UPDATE = 14,
+    ENGINE_CALLBACK_UPDATE = 15,
 
     /*!
      * A plugin's data/information has changed.
      * @param pluginId Plugin Id
      */
-    ENGINE_CALLBACK_RELOAD_INFO = 15,
+    ENGINE_CALLBACK_RELOAD_INFO = 16,
 
     /*!
      * A plugin's parameters have changed.
      * @param pluginId Plugin Id
      */
-    ENGINE_CALLBACK_RELOAD_PARAMETERS = 16,
+    ENGINE_CALLBACK_RELOAD_PARAMETERS = 17,
 
     /*!
      * A plugin's programs have changed.
      * @param pluginId Plugin Id
      */
-    ENGINE_CALLBACK_RELOAD_PROGRAMS = 17,
+    ENGINE_CALLBACK_RELOAD_PROGRAMS = 18,
 
     /*!
      * A plugin state has changed.
      * @param pluginId Plugin Id
      */
-    ENGINE_CALLBACK_RELOAD_ALL = 18,
+    ENGINE_CALLBACK_RELOAD_ALL = 19,
 
     /*!
      * A patchbay client has been added.
@@ -794,20 +803,20 @@ typedef enum {
      * @param valueStr Client name
      * @see PatchbayIcon
      */
-    ENGINE_CALLBACK_PATCHBAY_CLIENT_ADDED = 19,
+    ENGINE_CALLBACK_PATCHBAY_CLIENT_ADDED = 20,
 
     /*!
      * A patchbay client has been removed.
      * @param pluginId Client Id
      */
-    ENGINE_CALLBACK_PATCHBAY_CLIENT_REMOVED = 20,
+    ENGINE_CALLBACK_PATCHBAY_CLIENT_REMOVED = 21,
 
     /*!
      * A patchbay client has been renamed.
      * @param pluginId Client Id
      * @param valueStr New client name
      */
-    ENGINE_CALLBACK_PATCHBAY_CLIENT_RENAMED = 21,
+    ENGINE_CALLBACK_PATCHBAY_CLIENT_RENAMED = 22,
 
     /*!
      * A patchbay client data has changed.
@@ -816,7 +825,7 @@ typedef enum {
      * @param value2   New plugin Id (-1 if not a plugin)
      * @see PatchbayIcon
      */
-    ENGINE_CALLBACK_PATCHBAY_CLIENT_DATA_CHANGED = 22,
+    ENGINE_CALLBACK_PATCHBAY_CLIENT_DATA_CHANGED = 23,
 
     /*!
      * A patchbay port has been added.
@@ -826,14 +835,14 @@ typedef enum {
      * @param valueStr Port name
      * @see PatchbayPortHints
      */
-    ENGINE_CALLBACK_PATCHBAY_PORT_ADDED = 23,
+    ENGINE_CALLBACK_PATCHBAY_PORT_ADDED = 24,
 
     /*!
      * A patchbay port has been removed.
      * @param pluginId Client Id
      * @param value1   Port Id
      */
-    ENGINE_CALLBACK_PATCHBAY_PORT_REMOVED = 24,
+    ENGINE_CALLBACK_PATCHBAY_PORT_REMOVED = 25,
 
     /*!
      * A patchbay port has been renamed.
@@ -841,20 +850,20 @@ typedef enum {
      * @param value1   Port Id
      * @param valueStr New port name
      */
-    ENGINE_CALLBACK_PATCHBAY_PORT_RENAMED = 25,
+    ENGINE_CALLBACK_PATCHBAY_PORT_RENAMED = 26,
 
     /*!
      * A patchbay connection has been added.
      * @param pluginId Connection Id
      * @param valueStr Out group and port plus in group and port, in "og:op:ig:ip" syntax.
      */
-    ENGINE_CALLBACK_PATCHBAY_CONNECTION_ADDED = 26,
+    ENGINE_CALLBACK_PATCHBAY_CONNECTION_ADDED = 27,
 
     /*!
      * A patchbay connection has been removed.
      * @param pluginId Connection Id
      */
-    ENGINE_CALLBACK_PATCHBAY_CONNECTION_REMOVED = 27,
+    ENGINE_CALLBACK_PATCHBAY_CONNECTION_REMOVED = 28,
 
     /*!
      * Engine started.
@@ -864,62 +873,62 @@ typedef enum {
      * @see EngineProcessMode
      * @see EngineTransportMode
      */
-    ENGINE_CALLBACK_ENGINE_STARTED = 28,
+    ENGINE_CALLBACK_ENGINE_STARTED = 29,
 
     /*!
      * Engine stopped.
      */
-    ENGINE_CALLBACK_ENGINE_STOPPED = 29,
+    ENGINE_CALLBACK_ENGINE_STOPPED = 30,
 
     /*!
      * Engine process mode has changed.
      * @param value1 New process mode
      * @see EngineProcessMode
      */
-    ENGINE_CALLBACK_PROCESS_MODE_CHANGED = 30,
+    ENGINE_CALLBACK_PROCESS_MODE_CHANGED = 31,
 
     /*!
      * Engine transport mode has changed.
      * @param value1 New transport mode
      * @see EngineTransportMode
      */
-    ENGINE_CALLBACK_TRANSPORT_MODE_CHANGED = 31,
+    ENGINE_CALLBACK_TRANSPORT_MODE_CHANGED = 32,
 
     /*!
      * Engine buffer-size changed.
      * @param value1 New buffer size
      */
-    ENGINE_CALLBACK_BUFFER_SIZE_CHANGED = 32,
+    ENGINE_CALLBACK_BUFFER_SIZE_CHANGED = 33,
 
     /*!
      * Engine sample-rate changed.
      * @param value3 New sample rate
      */
-    ENGINE_CALLBACK_SAMPLE_RATE_CHANGED = 33,
+    ENGINE_CALLBACK_SAMPLE_RATE_CHANGED = 34,
 
     /*!
      * Idle frontend.\n
      * This is used by the engine during long operations that might block the frontend,
      * giving it the possibility to idle while the operation is still in place.
      */
-    ENGINE_CALLBACK_IDLE = 34,
+    ENGINE_CALLBACK_IDLE = 35,
 
     /*!
      * Show a message as information.
      * @param valueStr The message
      */
-    ENGINE_CALLBACK_INFO = 35,
+    ENGINE_CALLBACK_INFO = 36,
 
     /*!
      * Show a message as an error.
      * @param valueStr The message
      */
-    ENGINE_CALLBACK_ERROR = 36,
+    ENGINE_CALLBACK_ERROR = 37,
 
     /*!
      * The engine has crashed or malfunctioned and will no longer work.
      */
-    ENGINE_CALLBACK_QUIT = 37
+    ENGINE_CALLBACK_QUIT = 38
 
 } EngineCallbackOpcode;
 

source/backend/CarlaPlugin.hpp

@@ -430,7 +430,7 @@ public:
      *
      * \see getOptions() and getAvailableOptions()
      */
-    void setOption(const uint option, const bool yesNo);
+    void setOption(const uint option, const bool yesNo, const bool sendCallback);
 
     /*!
      * Enable or disable the plugin according to \a yesNo. \n

source/backend/CarlaStandalone.cpp

@@ -2069,7 +2069,7 @@ void carla_set_option(uint pluginId, uint option, bool yesNo)
     carla_debug("carla_set_option(%i, %i, %s)", pluginId, option, bool2str(yesNo));
 
     if (CarlaPlugin* const plugin = gStandalone.engine->getPlugin(pluginId))
-        return plugin->setOption(option, yesNo);
+        return plugin->setOption(option, yesNo, false);
 
     carla_stderr2("carla_set_option(%i, %i, %s) - could not find plugin", pluginId, option, bool2str(yesNo));
 }

source/backend/engine/CarlaEngineNative.cpp

@@ -296,7 +296,7 @@ protected:
             CARLA_SAFE_ASSERT_RETURN(readNextLineAsBool(yesNo), true);
 
             if (CarlaPlugin* const plugin = fEngine->getPlugin(pluginId))
-                plugin->setOption(option, yesNo);
+                plugin->setOption(option, yesNo, false);
         }
         else if (std::strcmp(msg, "set_active") == 0)
         {

source/backend/plugin/CarlaPlugin.cpp

@@ -528,6 +528,8 @@ const StateSave& CarlaPlugin::getStateSave()
     pData->stateSave.name     = carla_strdup(pData->name);
     pData->stateSave.label    = carla_strdup(strBuf);
     pData->stateSave.uniqueId = getUniqueId();
+    pData->stateSave.options  = pData->options;
+    carla_stdout("Options: 0x%x | 0x%x", pData->options, pData->stateSave.options);
 
     if (pData->filename != nullptr)
         pData->stateSave.binary = carla_strdup(pData->filename);
@@ -844,6 +846,17 @@ void CarlaPlugin::loadStateSave(const StateSave& stateSave)
     // ---------------------------------------------------------------
     // Part 6 - set internal stuff
 
+    const uint availOptions(getOptionsAvailable());
+
+    for (int i=0; i<10; ++i) // FIXME - get this value somehow...
+    {
+        const uint option(1 << i);
+
+        if (availOptions & option)
+            setOption(option, (stateSave.options & option) != 0, true);
+
+    }
+
 #ifndef BUILD_BRIDGE
     setDryWet(stateSave.dryWet, true, true);
     setVolume(stateSave.volume, true, true);
@@ -918,7 +931,7 @@ void CarlaPlugin::setName(const char* const newName)
     pData->name = carla_strdup(newName);
 }
 
-void CarlaPlugin::setOption(const uint option, const bool yesNo)
+void CarlaPlugin::setOption(const uint option, const bool yesNo, const bool sendCallback)
 {
     CARLA_SAFE_ASSERT_RETURN(getOptionsAvailable() & option,);
 
@@ -927,9 +940,8 @@ void CarlaPlugin::setOption(const uint option, const bool yesNo)
     else
         pData->options &= ~option;
 
-#ifndef BUILD_BRIDGE
-    pData->saveSetting(option, yesNo);
-#endif
+    if (sendCallback)
+        pData->engine->callback(ENGINE_CALLBACK_OPTION_CHANGED, pData->id, option, yesNo ? 1 : 0, 0.0f, nullptr);
 }
 
 void CarlaPlugin::setEnabled(const bool yesNo) noexcept

source/backend/plugin/CarlaPluginInternal.cpp

@@ -21,17 +21,8 @@
 #include "CarlaLibCounter.hpp"
 #include "CarlaMathUtils.hpp"
 
-// FIXME
-#include <QtCore/QSettings>
-
-// -----------------------------------------------------------------------
-
 CARLA_BACKEND_START_NAMESPACE
 
-#if 0
-} // Fix editor indentation
-#endif
-
 // -------------------------------------------------------------------
 // Fallback data
 
@@ -465,9 +456,6 @@ CarlaPlugin::ProtectedData::ProtectedData(CarlaEngine* const eng, const uint idx
       name(nullptr),
       filename(nullptr),
       iconName(nullptr),
-#ifndef BUILD_BRIDGE
-      identifier(nullptr),
-#endif
       osc(eng, plug) {}
 
 CarlaPlugin::ProtectedData::~ProtectedData() noexcept
@@ -516,14 +504,6 @@ CarlaPlugin::ProtectedData::~ProtectedData() noexcept
         iconName = nullptr;
     }
 
-#ifndef BUILD_BRIDGE
-    if (identifier != nullptr)
-    {
-        delete[] identifier;
-        identifier = nullptr;
-    }
-#endif
-
     for (LinkedList<CustomData>::Itenerator it = custom.begin(); it.valid(); it.next())
     {
         CustomData& cData(it.getValue());
@@ -704,91 +684,6 @@ void* CarlaPlugin::ProtectedData::uiLibSymbol(const char* const symbol) const no
     return lib_symbol(uiLib, symbol);
 }
 
-#ifndef BUILD_BRIDGE
-// -----------------------------------------------------------------------
-// Settings functions
-
-void CarlaPlugin::ProtectedData::saveSetting(const uint option, const bool yesNo) const
-{
-    CARLA_SAFE_ASSERT_RETURN(identifier != nullptr && identifier[0] != '\0',);
-
-    QSettings settings("falkTX", "CarlaPluginSettings");
-    settings.beginGroup(identifier);
-
-    switch (option)
-    {
-    case PLUGIN_OPTION_FIXED_BUFFERS:
-        settings.setValue("FixedBuffers", yesNo);
-        break;
-    case PLUGIN_OPTION_FORCE_STEREO:
-        settings.setValue("ForceStereo", yesNo);
-        break;
-    case PLUGIN_OPTION_MAP_PROGRAM_CHANGES:
-        settings.setValue("MapProgramChanges", yesNo);
-        break;
-    case PLUGIN_OPTION_USE_CHUNKS:
-        settings.setValue("UseChunks", yesNo);
-        break;
-    case PLUGIN_OPTION_SEND_CONTROL_CHANGES:
-        settings.setValue("SendControlChanges", yesNo);
-        break;
-    case PLUGIN_OPTION_SEND_CHANNEL_PRESSURE:
-        settings.setValue("SendChannelPressure", yesNo);
-        break;
-    case PLUGIN_OPTION_SEND_NOTE_AFTERTOUCH:
-        settings.setValue("SendNoteAftertouch", yesNo);
-        break;
-    case PLUGIN_OPTION_SEND_PITCHBEND:
-        settings.setValue("SendPitchbend", yesNo);
-        break;
-    case PLUGIN_OPTION_SEND_ALL_SOUND_OFF:
-        settings.setValue("SendAllSoundOff", yesNo);
-        break;
-    default:
-        break;
-    }
-
-    settings.endGroup();
-}
-
-uint CarlaPlugin::ProtectedData::loadSettings(const uint curOptions, const uint availOptions) const
-{
-    CARLA_SAFE_ASSERT_RETURN(identifier != nullptr && identifier[0] != '\0', 0x0);
-
-    QSettings settings("falkTX", "CarlaPluginSettings");
-    settings.beginGroup(identifier);
-
-    uint newOptions = 0x0;
-
-    #define CHECK_AND_SET_OPTION(STR, BIT)                                    \
-    if ((availOptions & BIT) != 0 || BIT == PLUGIN_OPTION_FORCE_STEREO)       \
-    {                                                                         \
-        if (settings.contains(STR))                                           \
-        {                                                                     \
-            if (settings.value(STR, bool((curOptions & BIT) != 0)).toBool())  \
-                newOptions |= BIT;                                            \
-        }                                                                     \
-        else if (curOptions & BIT)                                            \
-            newOptions |= BIT;                                                \
-    }
-
-    CHECK_AND_SET_OPTION("FixedBuffers", PLUGIN_OPTION_FIXED_BUFFERS);
-    CHECK_AND_SET_OPTION("ForceStereo", PLUGIN_OPTION_FORCE_STEREO);
-    CHECK_AND_SET_OPTION("MapProgramChanges", PLUGIN_OPTION_MAP_PROGRAM_CHANGES);
-    CHECK_AND_SET_OPTION("UseChunks", PLUGIN_OPTION_USE_CHUNKS);
-    CHECK_AND_SET_OPTION("SendControlChanges", PLUGIN_OPTION_SEND_CONTROL_CHANGES);
-    CHECK_AND_SET_OPTION("SendChannelPressure", PLUGIN_OPTION_SEND_CHANNEL_PRESSURE);
-    CHECK_AND_SET_OPTION("SendNoteAftertouch", PLUGIN_OPTION_SEND_NOTE_AFTERTOUCH);
-    CHECK_AND_SET_OPTION("SendPitchbend", PLUGIN_OPTION_SEND_PITCHBEND);
-    CHECK_AND_SET_OPTION("SendAllSoundOff", PLUGIN_OPTION_SEND_ALL_SOUND_OFF);
-
-    #undef CHECK_AND_SET_OPTION
-
-    settings.endGroup();
-
-    return newOptions;
-}
-
 // -----------------------------------------------------------------------
 
 void CarlaPlugin::ProtectedData::tryTransient() noexcept
@@ -796,7 +691,6 @@ void CarlaPlugin::ProtectedData::tryTransient() noexcept
     if (engine->getOptions().frontendWinId != 0)
         transientTryCounter = 1;
 }
-#endif
 
 void CarlaPlugin::ProtectedData::updateParameterValues(CarlaPlugin* const plugin, const bool sendOsc, const bool sendCallback, const bool useDefault) noexcept
 {

source/backend/plugin/CarlaPluginInternal.hpp

@@ -240,9 +240,6 @@ struct CarlaPlugin::ProtectedData {
     const char* name;
     const char* filename;
     const char* iconName;
-#ifndef BUILD_BRIDGE
-    const char* identifier; // used for save/restore settings per plugin
-#endif
 
     // data 2
     PluginAudioData audioIn;
@@ -345,19 +342,10 @@ struct CarlaPlugin::ProtectedData {
     bool  uiLibClose() noexcept;
     void* uiLibSymbol(const char* const symbol) const noexcept;
 
-#ifndef BUILD_BRIDGE
-    // -------------------------------------------------------------------
-    // Settings functions
-
-    void saveSetting(const uint option, const bool yesNo) const;
-    uint loadSettings(const uint options, const uint availOptions) const;
-
     // -------------------------------------------------------------------
     // Misc
 
     void tryTransient() noexcept;
-#endif
-
     void updateParameterValues(CarlaPlugin* const plugin, const bool sendOsc, const bool sendCallback, const bool useDefault) noexcept;
 
     // -------------------------------------------------------------------

source/backend/plugin/DssiPlugin.cpp

@@ -2103,60 +2103,35 @@ public:
         }
 
         // ---------------------------------------------------------------
-        // load plugin settings
+        // set default options
 
-        {
 #ifdef __USE_GNU
-            const bool isDssiVst(strcasestr(pData->filename, "dssi-vst") != nullptr);
+        const bool isDssiVst(strcasestr(pData->filename, "dssi-vst") != nullptr);
 #else
-            const bool isDssiVst(std::strstr(pData->filename, "dssi-vst") != nullptr);
+        const bool isDssiVst(std::strstr(pData->filename, "dssi-vst") != nullptr);
 #endif
 
-            // set default options
-            pData->options = 0x0;
-
-            pData->options |= PLUGIN_OPTION_MAP_PROGRAM_CHANGES;
-
-            if (fLatencyIndex >= 0 || isDssiVst)
-                pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;
+        pData->options  = 0x0;
+        pData->options |= PLUGIN_OPTION_MAP_PROGRAM_CHANGES;
 
-            if (pData->engine->getOptions().forceStereo)
-                pData->options |= PLUGIN_OPTION_FORCE_STEREO;
-
-            if (fUsesCustomData)
-                pData->options |= PLUGIN_OPTION_USE_CHUNKS;
-
-            if (fDssiDescriptor->run_synth != nullptr || fDssiDescriptor->run_multiple_synths != nullptr)
-            {
-                pData->options |= PLUGIN_OPTION_SEND_CHANNEL_PRESSURE;
-                pData->options |= PLUGIN_OPTION_SEND_NOTE_AFTERTOUCH;
-                pData->options |= PLUGIN_OPTION_SEND_PITCHBEND;
-                pData->options |= PLUGIN_OPTION_SEND_ALL_SOUND_OFF;
-
-                if (fDssiDescriptor->run_synth == nullptr)
-                    carla_stderr("WARNING: Plugin can ONLY use run_multiple_synths!");
-            }
+        if (fLatencyIndex >= 0 || isDssiVst)
+            pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;
 
-#ifndef BUILD_BRIDGE
-            // set identifier string
-            CarlaString identifier("DSSI/");
-
-            if (const char* const shortname = std::strrchr(filename, OS_SEP))
-            {
-                identifier += shortname+1;
-                identifier += ",";
-            }
+        if (pData->engine->getOptions().forceStereo)
+            pData->options |= PLUGIN_OPTION_FORCE_STEREO;
 
-            identifier += label;
-            pData->identifier = identifier.dup();
+        if (fUsesCustomData)
+            pData->options |= PLUGIN_OPTION_USE_CHUNKS;
 
-            // load settings
-            pData->options = pData->loadSettings(pData->options, getOptionsAvailable());
+        if (fDssiDescriptor->run_synth != nullptr || fDssiDescriptor->run_multiple_synths != nullptr)
+        {
+            pData->options |= PLUGIN_OPTION_SEND_CHANNEL_PRESSURE;
+            pData->options |= PLUGIN_OPTION_SEND_NOTE_AFTERTOUCH;
+            pData->options |= PLUGIN_OPTION_SEND_PITCHBEND;
+            pData->options |= PLUGIN_OPTION_SEND_ALL_SOUND_OFF;
 
-            // ignore settings, we need this anyway
-            if (fLatencyIndex >= 0 || isDssiVst)
-                pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;
-#endif
+            if (fDssiDescriptor->run_synth == nullptr)
+                carla_stderr("WARNING: Plugin can ONLY use run_multiple_synths!");
         }
 
         return true;

source/backend/plugin/FluidSynthPlugin.cpp

@@ -1621,32 +1621,13 @@ public:
         }
 
         // ---------------------------------------------------------------
-        // load plugin settings
+        // set default options
 
-        {
-            // set default options
-            pData->options = 0x0;
-
-            pData->options |= PLUGIN_OPTION_MAP_PROGRAM_CHANGES;
-            pData->options |= PLUGIN_OPTION_SEND_CHANNEL_PRESSURE;
-            pData->options |= PLUGIN_OPTION_SEND_PITCHBEND;
-            pData->options |= PLUGIN_OPTION_SEND_ALL_SOUND_OFF;
-
-#ifndef BUILD_BRIDGE
-            // set identifier string
-            CarlaString identifier("SF2/");
-
-            if (const char* const shortname = std::strrchr(filename, OS_SEP))
-                identifier += shortname+1;
-            else
-                identifier += label;
-
-            pData->identifier = identifier.dup();
-
-            // load settings
-            pData->options = pData->loadSettings(pData->options, getOptionsAvailable());
-#endif
-        }
+        pData->options  = 0x0;
+        pData->options |= PLUGIN_OPTION_MAP_PROGRAM_CHANGES;
+        pData->options |= PLUGIN_OPTION_SEND_CHANNEL_PRESSURE;
+        pData->options |= PLUGIN_OPTION_SEND_PITCHBEND;
+        pData->options |= PLUGIN_OPTION_SEND_ALL_SOUND_OFF;
 
         return true;
     }

source/backend/plugin/JucePlugin.cpp

@@ -1101,38 +1101,19 @@ public:
         }
 
         // ---------------------------------------------------------------
-        // load plugin settings
+        // set default options
 
-        {
-            // set default options
-            pData->options = 0x0;
-
-            pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;
-            pData->options |= PLUGIN_OPTION_MAP_PROGRAM_CHANGES;
-            //pData->options |= PLUGIN_OPTION_USE_CHUNKS;
-
-            if (fInstance->acceptsMidi())
-            {
-                pData->options |= PLUGIN_OPTION_SEND_CHANNEL_PRESSURE;
-                pData->options |= PLUGIN_OPTION_SEND_NOTE_AFTERTOUCH;
-                pData->options |= PLUGIN_OPTION_SEND_PITCHBEND;
-                pData->options |= PLUGIN_OPTION_SEND_ALL_SOUND_OFF;
-            }
-
-#ifndef BUILD_BRIDGE
-            // set identifier string
-            String juceId(fDesc.createIdentifierString());
-
-            CarlaString identifier("Juce/");
-            identifier += juceId.toRawUTF8();
-            pData->identifier = identifier.dup();
-
-            // load settings
-            pData->options = pData->loadSettings(pData->options, getOptionsAvailable());
+        pData->options  = 0x0;
+        pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;
+        pData->options |= PLUGIN_OPTION_MAP_PROGRAM_CHANGES;
+        //pData->options |= PLUGIN_OPTION_USE_CHUNKS;
 
-            // ignore settings, we need this anyway
-            pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;
-#endif
+        if (fInstance->acceptsMidi())
+        {
+            pData->options |= PLUGIN_OPTION_SEND_CHANNEL_PRESSURE;
+            pData->options |= PLUGIN_OPTION_SEND_NOTE_AFTERTOUCH;
+            pData->options |= PLUGIN_OPTION_SEND_PITCHBEND;
+            pData->options |= PLUGIN_OPTION_SEND_ALL_SOUND_OFF;
         }
 
         return true;

source/backend/plugin/LadspaPlugin.cpp

@@ -1604,40 +1604,21 @@ public:
         }
 
         // ---------------------------------------------------------------
-        // load plugin settings
+        // set default options
 
-        {
 #ifdef __USE_GNU
-            const bool isDssiVst(strcasestr(pData->filename, "dssi-vst") != nullptr);
+        const bool isDssiVst(strcasestr(pData->filename, "dssi-vst") != nullptr);
 #else
-            const bool isDssiVst(std::strstr(pData->filename, "dssi-vst") != nullptr);
+        const bool isDssiVst(std::strstr(pData->filename, "dssi-vst") != nullptr);
 #endif
 
-            // set default options
-            pData->options = 0x0;
-
-            if (fLatencyIndex >= 0 || isDssiVst)
-                pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;
+        pData->options = 0x0;
 
-            if (pData->engine->getOptions().forceStereo)
-                pData->options |= PLUGIN_OPTION_FORCE_STEREO;
+        if (fLatencyIndex >= 0 || isDssiVst)
+            pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;
 
-#ifndef BUILD_BRIDGE
-            // set identifier string
-            CarlaString identifier("LADSPA/");
-            identifier += CarlaString(getUniqueId());
-            identifier += ",";
-            identifier += label;
-            pData->identifier = identifier.dup();
-
-            // load settings
-            pData->options = pData->loadSettings(pData->options, getOptionsAvailable());
-
-            // ignore settings, we need this anyway
-            if (fLatencyIndex >= 0 || isDssiVst)
-                pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;
-#endif
-        }
+        if (pData->engine->getOptions().forceStereo)
+            pData->options |= PLUGIN_OPTION_FORCE_STEREO;
 
         return true;
     }

source/backend/plugin/LinuxSamplerPlugin.cpp

@@ -1304,33 +1304,13 @@ public:
         }
 
         // ---------------------------------------------------------------
-        // load plugin settings
+        // set default options
 
-        {
-            // set default options
-            pData->options = 0x0;
-
-            pData->options |= PLUGIN_OPTION_MAP_PROGRAM_CHANGES;
-            pData->options |= PLUGIN_OPTION_SEND_CHANNEL_PRESSURE;
-            pData->options |= PLUGIN_OPTION_SEND_PITCHBEND;
-            pData->options |= PLUGIN_OPTION_SEND_ALL_SOUND_OFF;
-
-#ifndef BUILD_BRIDGE
-            // set identifier string
-            CarlaString identifier(fFormat);
-            identifier += "/";
-
-            if (const char* const shortname = std::strrchr(filename, OS_SEP))
-                identifier += shortname+1;
-            else
-                identifier += label;
-
-            pData->identifier = identifier.dup();
-
-            // load settings
-            pData->options = pData->loadSettings(pData->options, getOptionsAvailable());
-#endif
-        }
+        pData->options  = 0x0;
+        pData->options |= PLUGIN_OPTION_MAP_PROGRAM_CHANGES;
+        pData->options |= PLUGIN_OPTION_SEND_CHANNEL_PRESSURE;
+        pData->options |= PLUGIN_OPTION_SEND_PITCHBEND;
+        pData->options |= PLUGIN_OPTION_SEND_ALL_SOUND_OFF;
 
         return true;
     }

source/backend/plugin/Lv2Plugin.cpp

@@ -4758,41 +4758,23 @@ public:
         }
 
         // ---------------------------------------------------------------
-        // load plugin settings
+        // set default options
 
-        {
-            // set default options
-            pData->options = 0x0;
-
-            pData->options |= PLUGIN_OPTION_MAP_PROGRAM_CHANGES;
-
-            if (fLatencyIndex >= 0 || getMidiInCount() > 0 || needsFixedBuffer())
-                pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;
+        pData->options  = 0x0;
+        pData->options |= PLUGIN_OPTION_MAP_PROGRAM_CHANGES;
 
-            if (pData->engine->getOptions().forceStereo)
-                pData->options |= PLUGIN_OPTION_FORCE_STEREO;
-
-            if (getMidiInCount() > 0)
-            {
-                pData->options |= PLUGIN_OPTION_SEND_CHANNEL_PRESSURE;
-                pData->options |= PLUGIN_OPTION_SEND_NOTE_AFTERTOUCH;
-                pData->options |= PLUGIN_OPTION_SEND_PITCHBEND;
-                pData->options |= PLUGIN_OPTION_SEND_ALL_SOUND_OFF;
-            }
+        if (fLatencyIndex >= 0 || getMidiInCount() > 0 || needsFixedBuffer())
+            pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;
 
-#ifndef BUILD_BRIDGE
-            // set identifier string
-            CarlaString identifier("LV2/");
-            identifier += uri;
-            pData->identifier = identifier.dup();
-
-            // load settings
-            pData->options = pData->loadSettings(pData->options, getOptionsAvailable());
+        if (pData->engine->getOptions().forceStereo)
+            pData->options |= PLUGIN_OPTION_FORCE_STEREO;
 
-            // ignore settings, we need this anyway
-            if (fLatencyIndex >= 0 || getMidiInCount() > 0 || needsFixedBuffer())
-                pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;
-#endif
+        if (getMidiInCount() > 0)
+        {
+            pData->options |= PLUGIN_OPTION_SEND_CHANNEL_PRESSURE;
+            pData->options |= PLUGIN_OPTION_SEND_NOTE_AFTERTOUCH;
+            pData->options |= PLUGIN_OPTION_SEND_PITCHBEND;
+            pData->options |= PLUGIN_OPTION_SEND_ALL_SOUND_OFF;
         }
 
         // ---------------------------------------------------------------

source/backend/plugin/Makefile

@@ -53,7 +53,7 @@ CarlaPlugin.cpp.o: CarlaPlugin.cpp $(CARLA_PLUGIN_CPP_DEPS)
 	$(CXX) $< $(BUILD_CXX_FLAGS) -c -o $@
 
 CarlaPluginInternal.cpp.o: CarlaPluginInternal.cpp $(CARLA_PLUGIN_INTERNAL_CPP_DEPS)
-	$(CXX) $< $(BUILD_CXX_FLAGS) $(QTCORE_FLAGS) -c -o $@
+	$(CXX) $< $(BUILD_CXX_FLAGS) -c -o $@
 
 CarlaPluginThread.cpp.o: CarlaPluginThread.cpp $(CARLA_PLUGIN_THREAD_CPP_DEPS)
 	$(CXX) $< $(BUILD_CXX_FLAGS) $(QTCORE_FLAGS) -c -o $@

source/backend/plugin/NativePlugin.cpp

@@ -2326,46 +2326,29 @@ public:
         }
 
         // ---------------------------------------------------------------
-        // load plugin settings
+        // set default options
 
-        {
-            const bool hasMidiProgs(fDescriptor->get_midi_program_count != nullptr && fDescriptor->get_midi_program_count(fHandle) > 0);
-
-            // set default options
-            pData->options = 0x0;
-
-            if (hasMidiProgs && (fDescriptor->supports & ::PLUGIN_SUPPORTS_PROGRAM_CHANGES) == 0)
-                pData->options |= PLUGIN_OPTION_MAP_PROGRAM_CHANGES;
-
-            if (getMidiInCount() > 0 || (fDescriptor->hints & ::PLUGIN_NEEDS_FIXED_BUFFERS) != 0)
-                pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;
+        const bool hasMidiProgs(fDescriptor->get_midi_program_count != nullptr && fDescriptor->get_midi_program_count(fHandle) > 0);
 
-            if (pData->engine->getOptions().forceStereo)
-                pData->options |= PLUGIN_OPTION_FORCE_STEREO;
+        pData->options = 0x0;
 
-            if (fDescriptor->supports & ::PLUGIN_SUPPORTS_CHANNEL_PRESSURE)
-                pData->options |= PLUGIN_OPTION_SEND_CHANNEL_PRESSURE;
-            if (fDescriptor->supports & ::PLUGIN_SUPPORTS_NOTE_AFTERTOUCH)
-                pData->options |= PLUGIN_OPTION_SEND_NOTE_AFTERTOUCH;
-            if (fDescriptor->supports & ::PLUGIN_SUPPORTS_PITCHBEND)
-                pData->options |= PLUGIN_OPTION_SEND_PITCHBEND;
-            if (fDescriptor->supports & ::PLUGIN_SUPPORTS_ALL_SOUND_OFF)
-                pData->options |= PLUGIN_OPTION_SEND_ALL_SOUND_OFF;
+        if (hasMidiProgs && (fDescriptor->supports & ::PLUGIN_SUPPORTS_PROGRAM_CHANGES) == 0)
+            pData->options |= PLUGIN_OPTION_MAP_PROGRAM_CHANGES;
 
-#ifndef BUILD_BRIDGE
-            // set identifier string
-            CarlaString identifier("Native/");
-            identifier += label;
-            pData->identifier = identifier.dup();
+        if (getMidiInCount() > 0 || (fDescriptor->hints & ::PLUGIN_NEEDS_FIXED_BUFFERS) != 0)
+            pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;
 
-            // load settings
-            pData->options = pData->loadSettings(pData->options, getOptionsAvailable());
+        if (pData->engine->getOptions().forceStereo)
+            pData->options |= PLUGIN_OPTION_FORCE_STEREO;
 
-            // ignore settings, we need this anyway
-            if (getMidiInCount() > 0 || (fDescriptor->hints & ::PLUGIN_NEEDS_FIXED_BUFFERS) != 0)
-                pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;
-#endif
-        }
+        if (fDescriptor->supports & ::PLUGIN_SUPPORTS_CHANNEL_PRESSURE)
+            pData->options |= PLUGIN_OPTION_SEND_CHANNEL_PRESSURE;
+        if (fDescriptor->supports & ::PLUGIN_SUPPORTS_NOTE_AFTERTOUCH)
+            pData->options |= PLUGIN_OPTION_SEND_NOTE_AFTERTOUCH;
+        if (fDescriptor->supports & ::PLUGIN_SUPPORTS_PITCHBEND)
+            pData->options |= PLUGIN_OPTION_SEND_PITCHBEND;
+        if (fDescriptor->supports & ::PLUGIN_SUPPORTS_ALL_SOUND_OFF)
+            pData->options |= PLUGIN_OPTION_SEND_ALL_SOUND_OFF;
 
         return true;
     }

source/backend/plugin/VstPlugin.cpp

@@ -2306,48 +2306,21 @@ public:
         }
 
         // ---------------------------------------------------------------
-        // load plugin settings
+        // set default options
 
-        {
-            const bool hasMidiIn(hasMidiInput());
-
-            // set default options
-            pData->options = 0x0;
-
-            pData->options |= PLUGIN_OPTION_MAP_PROGRAM_CHANGES;
-
-            if (fEffect->flags & effFlagsProgramChunks)
-                pData->options |= PLUGIN_OPTION_USE_CHUNKS;
-
-            if (hasMidiIn)
-            {
-                pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;
-                pData->options |= PLUGIN_OPTION_SEND_CHANNEL_PRESSURE;
-                pData->options |= PLUGIN_OPTION_SEND_NOTE_AFTERTOUCH;
-                pData->options |= PLUGIN_OPTION_SEND_PITCHBEND;
-                pData->options |= PLUGIN_OPTION_SEND_ALL_SOUND_OFF;
-            }
-
-#ifndef BUILD_BRIDGE
-            // set identifier string
-            CarlaString identifier("VST/");
+        pData->options  = 0x0;
+        pData->options |= PLUGIN_OPTION_MAP_PROGRAM_CHANGES;
 
-            if (const char* const shortname = std::strrchr(filename, OS_SEP))
-            {
-                identifier += shortname+1;
-                identifier += ",";
-            }
-
-            identifier += CarlaString(static_cast<long>(fEffect->uniqueID));
-            pData->identifier = identifier.dup();
-
-            // load settings
-            pData->options = pData->loadSettings(pData->options, getOptionsAvailable());
+        if (fEffect->flags & effFlagsProgramChunks)
+            pData->options |= PLUGIN_OPTION_USE_CHUNKS;
 
-            // ignore settings, we need this anyway
-            if (hasMidiIn)
-                pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;
-#endif
+        if (hasMidiInput())
+        {
+            pData->options |= PLUGIN_OPTION_FIXED_BUFFERS;
+            pData->options |= PLUGIN_OPTION_SEND_CHANNEL_PRESSURE;
+            pData->options |= PLUGIN_OPTION_SEND_NOTE_AFTERTOUCH;
+            pData->options |= PLUGIN_OPTION_SEND_PITCHBEND;
+            pData->options |= PLUGIN_OPTION_SEND_ALL_SOUND_OFF;
         }
 
         return true;

source/carla

@@ -87,6 +87,7 @@ class CarlaMultiW(QTabWidget):
         parent.ParameterMidiCcChangedCallback.connect(self.fRack.slot_handleParameterMidiCcChangedCallback)
         parent.ProgramChangedCallback.connect(self.fRack.slot_handleProgramChangedCallback)
         parent.MidiProgramChangedCallback.connect(self.fRack.slot_handleMidiProgramChangedCallback)
+        parent.OptionChangedCallback.connect(self.fRack.slot_handleOptionChangedCallback)
         parent.UiStateChangedCallback.connect(self.fRack.slot_handleUiStateChangedCallback)
         parent.NoteOnCallback.connect(self.fRack.slot_handleNoteOnCallback)
         parent.NoteOnCallback.connect(self.fPatchbay.slot_handleNoteOnCallback)

source/carla_backend.py

@@ -540,46 +540,53 @@ ENGINE_CALLBACK_PROGRAM_CHANGED = 9
 # @param value1   New MIDI program index
 ENGINE_CALLBACK_MIDI_PROGRAM_CHANGED = 10
 
+# A plugin option has changed.
+# @param pluginId Plugin Id
+# @param value1   Option
+# @param value2   New on/off state (1 for on, 0 for off)
+# @see PluginOptions
+ENGINE_CALLBACK_OPTION_CHANGED = 11
+
 # A plugin's custom UI state has changed.
 # @param pluginId Plugin Id
 # @param value1   New state, as follows:
 #                  0: UI is now hidden
 #                  1: UI is now visible
 #                 -1: UI has crashed and should not be shown again
-ENGINE_CALLBACK_UI_STATE_CHANGED = 11
+ENGINE_CALLBACK_UI_STATE_CHANGED = 12
 
 # A note has been pressed.
 # @param pluginId Plugin Id
 # @param value1   Channel
 # @param value2   Note
 # @param value3   Velocity
-ENGINE_CALLBACK_NOTE_ON = 12
+ENGINE_CALLBACK_NOTE_ON = 13
 
 # A note has been released.
 # @param pluginId Plugin Id
 # @param value1   Channel
 # @param value2   Note
-ENGINE_CALLBACK_NOTE_OFF = 13
+ENGINE_CALLBACK_NOTE_OFF = 14
 
 # A plugin needs update.
 # @param pluginId Plugin Id
-ENGINE_CALLBACK_UPDATE = 14
+ENGINE_CALLBACK_UPDATE = 15
 
 # A plugin's data/information has changed.
 # @param pluginId Plugin Id
-ENGINE_CALLBACK_RELOAD_INFO = 15
+ENGINE_CALLBACK_RELOAD_INFO = 16
 
 # A plugin's parameters have changed.
 # @param pluginId Plugin Id
-ENGINE_CALLBACK_RELOAD_PARAMETERS = 16
+ENGINE_CALLBACK_RELOAD_PARAMETERS = 17
 
 # A plugin's programs have changed.
 # @param pluginId Plugin Id
-ENGINE_CALLBACK_RELOAD_PROGRAMS = 17
+ENGINE_CALLBACK_RELOAD_PROGRAMS = 18
 
 # A plugin state has changed.
 # @param pluginId Plugin Id
-ENGINE_CALLBACK_RELOAD_ALL = 18
+ENGINE_CALLBACK_RELOAD_ALL = 19
 
 # A patchbay client has been added.
 # @param pluginId Client Id
@@ -587,23 +594,23 @@ ENGINE_CALLBACK_RELOAD_ALL = 18
 # @param value2   Plugin Id (-1 if not a plugin)
 # @param valueStr Client name
 # @see PatchbayIcon
-ENGINE_CALLBACK_PATCHBAY_CLIENT_ADDED = 19
+ENGINE_CALLBACK_PATCHBAY_CLIENT_ADDED = 20
 
 # A patchbay client has been removed.
 # @param pluginId Client Id
-ENGINE_CALLBACK_PATCHBAY_CLIENT_REMOVED = 20
+ENGINE_CALLBACK_PATCHBAY_CLIENT_REMOVED = 21
 
 # A patchbay client has been renamed.
 # @param pluginId Client Id
 # @param valueStr New client name
-ENGINE_CALLBACK_PATCHBAY_CLIENT_RENAMED = 21
+ENGINE_CALLBACK_PATCHBAY_CLIENT_RENAMED = 22
 
 # A patchbay client data has changed.
 # @param pluginId Client Id
 # @param value1   New icon
 # @param value2   New plugin Id (-1 if not a plugin)
 # @see PatchbayIcon
-ENGINE_CALLBACK_PATCHBAY_CLIENT_DATA_CHANGED = 22
+ENGINE_CALLBACK_PATCHBAY_CLIENT_DATA_CHANGED = 23
 
 # A patchbay port has been added.
 # @param pluginId Client Id
@@ -611,27 +618,27 @@ ENGINE_CALLBACK_PATCHBAY_CLIENT_DATA_CHANGED = 22
 # @param value2   Port hints
 # @param valueStr Port name
 # @see PatchbayPortHints
-ENGINE_CALLBACK_PATCHBAY_PORT_ADDED = 23
+ENGINE_CALLBACK_PATCHBAY_PORT_ADDED = 24
 
 # A patchbay port has been removed.
 # @param pluginId Client Id
 # @param value1   Port Id
-ENGINE_CALLBACK_PATCHBAY_PORT_REMOVED = 24
+ENGINE_CALLBACK_PATCHBAY_PORT_REMOVED = 25
 
 # A patchbay port has been renamed.
 # @param pluginId Client Id
 # @param value1   Port Id
 # @param valueStr New port name
-ENGINE_CALLBACK_PATCHBAY_PORT_RENAMED = 25
+ENGINE_CALLBACK_PATCHBAY_PORT_RENAMED = 26
 
 # A patchbay connection has been added.
 # @param pluginId Connection Id
 # @param valueStr Out group, port plus in group and port, in "og:op:ig:ip" syntax.
-ENGINE_CALLBACK_PATCHBAY_CONNECTION_ADDED = 26
+ENGINE_CALLBACK_PATCHBAY_CONNECTION_ADDED = 27
 
 # A patchbay connection has been removed.
 # @param pluginId Connection Id
-ENGINE_CALLBACK_PATCHBAY_CONNECTION_REMOVED = 27
+ENGINE_CALLBACK_PATCHBAY_CONNECTION_REMOVED = 28
 
 # Engine started.
 # @param value1   Process mode
@@ -639,44 +646,44 @@ ENGINE_CALLBACK_PATCHBAY_CONNECTION_REMOVED = 27
 # @param valuestr Engine driver
 # @see EngineProcessMode
 # @see EngineTransportMode
-ENGINE_CALLBACK_ENGINE_STARTED = 28
+ENGINE_CALLBACK_ENGINE_STARTED = 29
 
 # Engine stopped.
-ENGINE_CALLBACK_ENGINE_STOPPED = 29
+ENGINE_CALLBACK_ENGINE_STOPPED = 30
 
 # Engine process mode has changed.
 # @param value1 New process mode
 # @see EngineProcessMode
-ENGINE_CALLBACK_PROCESS_MODE_CHANGED = 30
+ENGINE_CALLBACK_PROCESS_MODE_CHANGED = 31
 
 # Engine transport mode has changed.
 # @param value1 New transport mode
 # @see EngineTransportMode
-ENGINE_CALLBACK_TRANSPORT_MODE_CHANGED = 31
+ENGINE_CALLBACK_TRANSPORT_MODE_CHANGED = 32
 
 # Engine buffer-size changed.
 # @param value1 New buffer size
-ENGINE_CALLBACK_BUFFER_SIZE_CHANGED = 32
+ENGINE_CALLBACK_BUFFER_SIZE_CHANGED = 33
 
 # Engine sample-rate changed.
 # @param value3 New sample rate
-ENGINE_CALLBACK_SAMPLE_RATE_CHANGED = 33
+ENGINE_CALLBACK_SAMPLE_RATE_CHANGED = 34
 
 # Idle frontend.
 # This is used by the engine during long operations that might block the frontend,
 # giving it the possibility to idle while the operation is still in place.
-ENGINE_CALLBACK_IDLE = 34
+ENGINE_CALLBACK_IDLE = 35
 
 # Show a message as information.
 # @param valueStr The message
-ENGINE_CALLBACK_INFO = 35
+ENGINE_CALLBACK_INFO = 36
 
 # Show a message as an error.
 # @param valueStr The message
-ENGINE_CALLBACK_ERROR = 36
+ENGINE_CALLBACK_ERROR = 37
 
 # The engine has crashed or malfunctioned and will no longer work.
-ENGINE_CALLBACK_QUIT = 37
+ENGINE_CALLBACK_QUIT = 38
 
 # ------------------------------------------------------------------------------------------------------------
 # Engine Option

source/carla_host.py

@@ -134,6 +134,7 @@ class HostWindow(QMainWindow):
     ParameterMidiChannelChangedCallback = pyqtSignal(int, int, int)
     ProgramChangedCallback = pyqtSignal(int, int)
     MidiProgramChangedCallback = pyqtSignal(int, int)
+    OptionChangedCallback = pyqtSignal(int, int, bool)
     UiStateChangedCallback = pyqtSignal(int, int)
     NoteOnCallback = pyqtSignal(int, int, int, int)
     NoteOffCallback = pyqtSignal(int, int, int)
@@ -1262,6 +1263,8 @@ def engineCallback(ptr, action, pluginId, value1, value2, value3, valueStr):
         gCarla.gui.ProgramChangedCallback.emit(pluginId, value1)
     elif action == ENGINE_CALLBACK_MIDI_PROGRAM_CHANGED:
         gCarla.gui.MidiProgramChangedCallback.emit(pluginId, value1)
+    elif action == ENGINE_CALLBACK_OPTION_CHANGED:
+        gCarla.gui.OptionChangedCallback.emit(pluginId, value1, bool(value2))
     elif action == ENGINE_CALLBACK_UI_STATE_CHANGED:
         gCarla.gui.UiStateChangedCallback.emit(pluginId, value1)
     elif action == ENGINE_CALLBACK_NOTE_ON:

source/carla_patchbay.py

@@ -225,6 +225,7 @@ class CarlaPatchbayW(QFrame):
         parent.ParameterMidiCcChangedCallback.connect(self.slot_handleParameterMidiCcChangedCallback)
         parent.ProgramChangedCallback.connect(self.slot_handleProgramChangedCallback)
         parent.MidiProgramChangedCallback.connect(self.slot_handleMidiProgramChangedCallback)
+        parent.OptionChangedCallback.connect(self.slot_handleOptionChangedCallback)
         parent.NoteOnCallback.connect(self.slot_handleNoteOnCallback)
         parent.NoteOffCallback.connect(self.slot_handleNoteOffCallback)
         parent.UpdateCallback.connect(self.slot_handleUpdateCallback)
@@ -728,6 +729,19 @@ class CarlaPatchbayW(QFrame):
 
     # -----------------------------------------------------------------
 
+    @pyqtSlot(int, int, bool)
+    def slot_handleOptionChangedCallback(self, pluginId, option, yesNo):
+        if pluginId >= self.fPluginCount:
+            return
+
+        pitem = self.fPluginList[pluginId]
+        if pitem is None:
+            return
+
+        pitem.setOption(option, yesNo)
+
+    # -----------------------------------------------------------------
+
     @pyqtSlot(int, int, int, int)
     def slot_handleNoteOnCallback(self, pluginId, channel, note, velo):
         if pluginId in self.fSelectedPlugins:

source/carla_rack.py

@@ -297,6 +297,7 @@ class CarlaRackW(QFrame):
         parent.ParameterMidiCcChangedCallback.connect(self.slot_handleParameterMidiCcChangedCallback)
         parent.ProgramChangedCallback.connect(self.slot_handleProgramChangedCallback)
         parent.MidiProgramChangedCallback.connect(self.slot_handleMidiProgramChangedCallback)
+        parent.OptionChangedCallback.connect(self.slot_handleOptionChangedCallback)
         parent.UiStateChangedCallback.connect(self.slot_handleUiStateChangedCallback)
         parent.NoteOnCallback.connect(self.slot_handleNoteOnCallback)
         parent.NoteOffCallback.connect(self.slot_handleNoteOffCallback)
@@ -600,6 +601,19 @@ class CarlaRackW(QFrame):
 
     # -----------------------------------------------------------------
 
+    @pyqtSlot(int, int, bool)
+    def slot_handleOptionChangedCallback(self, pluginId, option, yesNo):
+        if pluginId >= self.fPluginCount:
+            return
+
+        pitem = self.fPluginList[pluginId]
+        if pitem is None:
+            return
+
+        pitem.widget.setOption(option, yesNo)
+
+    # -----------------------------------------------------------------
+
     @pyqtSlot(int, int)
     def slot_handleUiStateChangedCallback(self, pluginId, state):
         if pluginId >= self.fPluginCount:

source/carla_skin.py

@@ -297,6 +297,11 @@ class AbstractPluginSlot(QFrame):
 
     #------------------------------------------------------------------
 
+    def setOption(self, option, yesNo):
+        self.fEditDialog.setOption(option, yesNo)
+
+    #------------------------------------------------------------------
+
     def sendNoteOn(self, channel, note):
         if self.fEditDialog.sendNoteOn(channel, note):
             self.midiActivityChanged(True)
@@ -379,6 +384,9 @@ class AbstractPluginSlot(QFrame):
         self.cb_presets.setCurrentIndex(index)
         self.cb_presets.blockSignals(False)
 
+    def optionChanged(self, option, yesNo):
+        pass
+
     def notePressed(self, note):
         pass
 

source/carla_widgets.py

@@ -942,6 +942,32 @@ class PluginEdit(QDialog):
         self.ui.cb_midi_programs.setCurrentIndex(index)
         self.ui.cb_midi_programs.blockSignals(False)
 
+    def setOption(self, option, yesNo):
+        if option == PLUGIN_OPTION_FIXED_BUFFERS:
+            widget = self.ui.ch_fixed_buffer
+        elif option == PLUGIN_OPTION_FORCE_STEREO:
+            widget = self.ui.ch_force_stereo
+        elif option == PLUGIN_OPTION_MAP_PROGRAM_CHANGES:
+            widget = self.ui.ch_map_program_changes
+        elif option == PLUGIN_OPTION_USE_CHUNKS:
+            widget = self.ui.ch_use_chunks
+        elif option == PLUGIN_OPTION_SEND_CONTROL_CHANGES:
+            widget = self.ui.ch_send_control_changes
+        elif option == PLUGIN_OPTION_SEND_CHANNEL_PRESSURE:
+            widget = self.ui.ch_send_channel_pressure
+        elif option == PLUGIN_OPTION_SEND_NOTE_AFTERTOUCH:
+            widget = self.ui.ch_send_note_aftertouch
+        elif option == PLUGIN_OPTION_SEND_PITCHBEND:
+            widget = self.ui.ch_send_pitchbend
+        elif option == PLUGIN_OPTION_SEND_ALL_SOUND_OFF:
+            widget = self.ui.ch_send_all_sound_off
+        else:
+            return
+
+        widget.blockSignals(True)
+        widget.setChecked(yesNo)
+        widget.blockSignals(False)
+
     #------------------------------------------------------------------
 
     def sendNoteOn(self, channel, note):

source/utils/CarlaBackendUtils.hpp

@@ -217,6 +217,8 @@ const char* EngineCallbackOpcode2Str(const EngineCallbackOpcode opcode) noexcept
         return "ENGINE_CALLBACK_PROGRAM_CHANGED";
     case ENGINE_CALLBACK_MIDI_PROGRAM_CHANGED:
         return "ENGINE_CALLBACK_MIDI_PROGRAM_CHANGED";
+    case ENGINE_CALLBACK_OPTION_CHANGED:
+        return "ENGINE_CALLBACK_OPTION_CHANGED";
     case ENGINE_CALLBACK_UI_STATE_CHANGED:
         return "ENGINE_CALLBACK_UI_STATE_CHANGED";
     case ENGINE_CALLBACK_NOTE_ON:

source/utils/CarlaStateUtils.cpp

@@ -141,6 +141,7 @@ StateSave::StateSave() noexcept
       balanceRight(1.0f),
       panning(0.0f),
       ctrlChannel(-1),
+      options(0x0),
       currentProgramIndex(-1),
       currentProgramName(nullptr),
       currentMidiBank(-1),
@@ -193,6 +194,7 @@ void StateSave::clear() noexcept
     balanceRight = 1.0f;
     panning      = 0.0f;
     ctrlChannel  = -1;
+    options      = 0x0;
     currentProgramIndex = -1;
     currentMidiBank     = -1;
     currentMidiProgram  = -1;
@@ -295,6 +297,10 @@ bool StateSave::fillFromXmlElement(const XmlElement* const xmlElement)
                             ctrlChannel = static_cast<int8_t>(value-1);
                     }
                 }
+                else if (tag.equalsIgnoreCase("options"))
+                {
+                    options = text.getHexValue32();
+                }
 
                 // -------------------------------------------------------
                 // Program (current)
@@ -496,6 +502,8 @@ String StateSave::toString() const
         else
             dataXml << "   <ControlChannel>" << int(ctrlChannel+1) << "</ControlChannel>\n";
 
+        dataXml << "   <Options>0x" << String::toHexString(static_cast<int>(options)) << "</Options>\n";
+
         content << dataXml;
     }
 

source/utils/CarlaStateUtils.hpp

@@ -76,6 +76,7 @@ struct StateSave {
     float balanceRight;
     float panning;
     int8_t ctrlChannel;
+    uint   options;
 
     int32_t     currentProgramIndex;
     const char* currentProgramName;