Initial attempt at plugin state/restore

src/CardinalPlugin.cpp

@@ -32,7 +32,8 @@
 #include <osdialog.h>
 
 #include "PluginContext.hpp"
-#include "extra/Mutex.hpp"
+#include "WindowParameters.hpp"
+#include "extra/Base64.hpp"
 
 namespace rack {
 namespace plugin {
@@ -128,8 +129,13 @@ class CardinalPlugin : public CardinalBasePlugin
     rack::audio::Device* fCurrentDevice;
     Mutex fDeviceMutex;
 
+    float fParameters[kWindowParameterCount];
+
     struct ScopedContext {
-        ScopedContext(CardinalPlugin* const plugin)
+        const MutexLocker cml;
+
+        ScopedContext(const CardinalPlugin* const plugin)
+            : cml(plugin->contextMutex)
         {
             rack::contextSet(plugin->fContext);
         }
@@ -142,13 +148,18 @@ class CardinalPlugin : public CardinalBasePlugin
 
 public:
     CardinalPlugin()
-        : CardinalBasePlugin(0, 0, 0),
+        : CardinalBasePlugin(kWindowParameterCount, 0, 1),
           fContext(new CardinalPluginContext(this)),
           fAudioBufferIn(nullptr),
           fAudioBufferOut(nullptr),
           fIsActive(false),
           fCurrentDevice(nullptr)
     {
+        fParameters[kWindowParameterCableOpacity] = 50.0f;
+        fParameters[kWindowParameterCableTension] = 50.0f;
+        fParameters[kWindowParameterRackBrightness] = 100.0f;
+        fParameters[kWindowParameterHaloBrightness] = 25.0f;
+
         // create unique temporary path for this instance
         try {
             char uidBuf[24];
@@ -232,60 +243,38 @@ protected:
    /* --------------------------------------------------------------------------------------------------------
     * Information */
 
-   /**
-      Get the plugin label.
-      A plugin label follows the same rules as Parameter::symbol, with the exception that it can start with numbers.
-    */
     const char* getLabel() const override
     {
         return "Cardinal";
     }
 
-   /**
-      Get an extensive comment/description about the plugin.
-    */
     const char* getDescription() const override
     {
-        return "...";
+        return ""
+        "Cardinal is an open-source self-contained special plugin version of VCVRack, using DPF.\n"
+        "It is NOT an official VCV project, and it is not affiliated with it in any way.\n";
     }
 
-   /**
-      Get the plugin author/maker.
-    */
     const char* getMaker() const override
     {
         return "DISTRHO";
     }
 
-   /**
-      Get the plugin homepage.
-    */
     const char* getHomePage() const override
     {
         return "https://github.com/DISTRHO/Cardinal";
     }
 
-   /**
-      Get the plugin license name (a single line of text).
-      For commercial plugins this should return some short copyright information.
-    */
     const char* getLicense() const override
     {
-        return "ISC";
+        return "GPLv3+";
     }
 
-   /**
-      Get the plugin version, in hexadecimal.
-    */
     uint32_t getVersion() const override
     {
-        return d_version(1, 0, 0);
+        return d_version(2, 0, 0);
     }
 
-   /**
-      Get the plugin unique Id.
-      This value is used by LADSPA, DSSI and VST plugin formats.
-    */
     int64_t getUniqueId() const override
     {
         return d_cconst('d', 'C', 'd', 'n');
@@ -294,9 +283,110 @@ protected:
    /* --------------------------------------------------------------------------------------------------------
     * Init */
 
+    void initParameter(const uint32_t index, Parameter& parameter) override
+    {
+        switch (index)
+        {
+        case kWindowParameterCableOpacity:
+            parameter.name = "Cable Opacity";
+            parameter.symbol = "cableOpacity";
+            parameter.unit = "%";
+            parameter.hints = kParameterIsAutomable;
+            parameter.ranges.def = 50.0f;
+            parameter.ranges.min = 0.0f;
+            parameter.ranges.max = 100.0f;
+            break;
+        case kWindowParameterCableTension:
+            parameter.name = "Cable Tension";
+            parameter.symbol = "cableTension";
+            parameter.unit = "%";
+            parameter.hints = kParameterIsAutomable;
+            parameter.ranges.def = 50.0f;
+            parameter.ranges.min = 0.0f;
+            parameter.ranges.max = 100.0f;
+            break;
+        case kWindowParameterRackBrightness:
+            parameter.name = "Rack Brightness";
+            parameter.symbol = "rackBrightness";
+            parameter.unit = "%";
+            parameter.hints = kParameterIsAutomable;
+            parameter.ranges.def = 100.0f;
+            parameter.ranges.min = 0.0f;
+            parameter.ranges.max = 100.0f;
+            break;
+        case kWindowParameterHaloBrightness:
+            parameter.name = "Halo Brightness";
+            parameter.symbol = "haloBrightness";
+            parameter.unit = "%";
+            parameter.hints = kParameterIsAutomable;
+            parameter.ranges.def = 25.0f;
+            parameter.ranges.min = 0.0f;
+            parameter.ranges.max = 100.0f;
+            break;
+        }
+    }
+
+    void initState(const uint32_t index, String& stateKey, String& defaultStateValue) override
+    {
+        DISTRHO_SAFE_ASSERT_RETURN(index == 0,);
+
+        stateKey = "patch";
+        defaultStateValue = "";
+    }
+
    /* --------------------------------------------------------------------------------------------------------
     * Internal data */
 
+    float getParameterValue(const uint32_t index) const override
+    {
+        return fParameters[index];
+    }
+
+    void setParameterValue(const uint32_t index, float value) override
+    {
+        fParameters[index] = value;
+    }
+
+    String getState(const char* const key) const override
+    {
+        if (std::strcmp(key, "patch") != 0)
+            return String();
+        if (fAutosavePath.empty())
+            return String();
+
+        std::vector<uint8_t> data;
+
+        {
+            const ScopedContext sc(this);
+
+            fContext->engine->prepareSave();
+            fContext->patch->saveAutosave();
+            fContext->patch->cleanAutosave();
+
+            data = rack::system::archiveDirectory(fAutosavePath, 1);
+        }
+
+        return String::asBase64(data.data(), data.size());
+    }
+
+    void setState(const char* const key, const char* const value) override
+    {
+        if (std::strcmp(key, "patch") != 0)
+            return;
+        if (fAutosavePath.empty())
+            return;
+
+        const std::vector<uint8_t> data(d_getChunkFromBase64String(value));
+
+        const ScopedContext sc(this);
+
+        rack::system::removeRecursively(fAutosavePath);
+        rack::system::createDirectories(fAutosavePath);
+        rack::system::unarchiveToDirectory(data, fAutosavePath);
+
+        fContext->patch->loadAutosave();
+    }
+
    /* --------------------------------------------------------------------------------------------------------
     * Process */
 
@@ -329,9 +419,6 @@ protected:
         fAudioBufferIn = fAudioBufferOut = nullptr;
     }
 
-   /**
-      Run/process function for plugins without MIDI input.
-    */
     void run(const float** const inputs, float** const outputs, const uint32_t frames) override
     {
         /*
@@ -340,8 +427,9 @@ protected:
         */
 
         const MutexLocker cml(fDeviceMutex);
+        // const MutexTryLocker cmtl(fPatchMutex);
 
-        if (fCurrentDevice == nullptr)
+        if (fCurrentDevice == nullptr /*|| cmtl.wasNotLocked()*/)
         {
             std::memset(outputs[0], 0, sizeof(float)*frames);
             std::memset(outputs[1], 0, sizeof(float)*frames);

src/CardinalUI.cpp

@@ -22,9 +22,13 @@
 #include <ui/MenuItem.hpp>
 #include <window/Window.hpp>
 
-#include "PluginContext.hpp"
+#ifdef NDEBUG
+# undef DEBUG
+#endif
 
 #include "DistrhoUI.hpp"
+#include "PluginContext.hpp"
+#include "WindowParameters.hpp"
 #include "ResizeHandle.hpp"
 
 GLFWAPI const char* glfwGetClipboardString(GLFWwindow* window) { return nullptr; }
@@ -45,20 +49,29 @@ START_NAMESPACE_DISTRHO
 
 CardinalPluginContext* getRackContextFromPlugin(void* ptr);
 
-class CardinalUI : public UI
+class CardinalUI : public UI,
+                   public WindowParametersCallback
 {
     CardinalPluginContext* const fContext;
     rack::math::Vec fLastMousePos;
     ResizeHandle fResizeHandle;
+    WindowParameters fWindowParameters;
 
     struct ScopedContext {
+        CardinalPluginContext* const context;
+        const MutexLocker cml;
+
         ScopedContext(CardinalUI* const ui)
+            : context(ui->fContext),
+              cml(context->plugin->contextMutex)
         {
-            rack::contextSet(ui->fContext);
+            rack::contextSet(context);
+            WindowParametersRestore(context->window);
         }
 
         ~ScopedContext()
         {
+            WindowParametersSave(context->window);
             rack::contextSet(nullptr);
         }
     };
@@ -72,58 +85,63 @@ public:
         if (isResizable())
             fResizeHandle.hide();
 
-        const ScopedContext sc(this);
+        fContext->window = new rack::window::Window;
 
-        fContext->event = new rack::widget::EventState;
-        fContext->scene = new rack::app::Scene;
-        fContext->event->rootWidget = fContext->scene;
+        {
+            const ScopedContext sc(this);
 
-        fContext->window = new rack::window::Window;
-        rack::window::WindowInit(fContext->window, this);
+            fContext->event = new rack::widget::EventState;
+            fContext->scene = new rack::app::Scene;
+            fContext->event->rootWidget = fContext->scene;
 
-        // Hide non-wanted menu entries
-        typedef rack::ui::Button rButton;
-        // typedef rack::ui::MenuItem rMenuItem;
-        typedef rack::widget::Widget rWidget;
-        typedef std::list<rWidget*>::iterator rWidgetIterator;
+            rack::window::WindowInit(fContext->window, this);
 
-        rWidget* const layout = fContext->scene->menuBar->children.front();
+            // Hide non-wanted menu entries
+            typedef rack::ui::Button rButton;
+            // typedef rack::ui::MenuItem rMenuItem;
+            typedef rack::widget::Widget rWidget;
+            typedef std::list<rWidget*>::iterator rWidgetIterator;
 
-        for (rWidgetIterator it = layout->children.begin(); it != layout->children.end(); ++it)
-        {
-            if (rButton* const button = reinterpret_cast<rButton*>(*it))
+            rWidget* const layout = fContext->scene->menuBar->children.front();
+
+            for (rWidgetIterator it = layout->children.begin(); it != layout->children.end(); ++it)
             {
-                /* FIXME this doesnt work
-                if (button->text == "Engine")
+                if (rButton* const button = reinterpret_cast<rButton*>(*it))
                 {
-                    for (rWidgetIterator it2 = button->children.begin(); it2 != button->children.end(); ++it2)
+                    /* FIXME this doesnt work
+                    if (button->text == "Engine")
                     {
-                        if (rMenuItem* const item = reinterpret_cast<rMenuItem*>(*it2))
+                        for (rWidgetIterator it2 = button->children.begin(); it2 != button->children.end(); ++it2)
                         {
-                            if (item->text == "Sample rate")
+                            if (rMenuItem* const item = reinterpret_cast<rMenuItem*>(*it2))
                             {
-                                button->children.erase(it2);
-                                delete button;
-                                break;
+                                if (item->text == "Sample rate")
+                                {
+                                    button->children.erase(it2);
+                                    delete button;
+                                    break;
+                                }
                             }
                         }
                     }
-                }
-                */
-                if (button->text == "Library")
-                {
-                    layout->children.erase(it);
-                    delete button;
-                    break;
+                    */
+                    if (button->text == "Library")
+                    {
+                        layout->children.erase(it);
+                        delete button;
+                        break;
+                    }
                 }
             }
+
+            // we need to reload current patch for things to show on screen :(
+            // FIXME always save
+            if (! fContext->patch->hasAutosave())
+                fContext->patch->saveAutosave();
+            fContext->patch->loadAutosave();
         }
 
-        // we need to reload current patch for things to show on screen :(
-        // FIXME always save
-        if (! fContext->patch->hasAutosave())
-            fContext->patch->saveAutosave();
-        fContext->patch->loadAutosave();
+        WindowParametersSetCallback(fContext->window, this);
     }
 
     ~CardinalUI() override
@@ -143,7 +161,6 @@ public:
     void onNanoDisplay() override
     {
         const ScopedContext sc(this);
-
         fContext->window->step();
     }
 
@@ -152,6 +169,35 @@ public:
         repaint();
     }
 
+    void WindowParametersChanged(const WindowParameterList param, const float value) override
+    {
+        float mult;
+
+        switch (param)
+        {
+        case kWindowParameterCableOpacity:
+            mult = 100.0f;
+            fWindowParameters.cableOpacity = value;
+            break;
+        case kWindowParameterCableTension:
+            mult = 100.0f;
+            fWindowParameters.cableTension = value;
+            break;
+        case kWindowParameterRackBrightness:
+            mult = 100.0f;
+            fWindowParameters.rackBrightness = value;
+            break;
+        case kWindowParameterHaloBrightness:
+            mult = 100.0f;
+            fWindowParameters.haloBrightness = value;
+            break;
+        default:
+            return;
+        }
+
+        setParameterValue((uint)param, value * mult);
+    }
+
 protected:
    /* --------------------------------------------------------------------------------------------------------
     * DSP/Plugin Callbacks */
@@ -160,7 +206,30 @@ protected:
       A parameter has changed on the plugin side.
       This is called by the host to inform the UI about parameter changes.
     */
-    void parameterChanged(uint32_t index, float value) override
+    void parameterChanged(const uint32_t index, const float value) override
+    {
+        switch (index)
+        {
+        case kWindowParameterCableOpacity:
+            fWindowParameters.cableOpacity = value / 100.0f;
+            break;
+        case kWindowParameterCableTension:
+            fWindowParameters.cableTension = value / 100.0f;
+            break;
+        case kWindowParameterRackBrightness:
+            fWindowParameters.rackBrightness = value / 100.0f;
+            break;
+        case kWindowParameterHaloBrightness:
+            fWindowParameters.haloBrightness = value / 100.0f;
+            break;
+        default:
+            return;
+        }
+
+        WindowParametersSetValues(fContext->window, fWindowParameters);
+    }
+
+    void stateChanged(const char* key, const char* value) override
     {
     }
 

src/DistrhoPluginInfo.h

@@ -25,6 +25,8 @@
 #define DISTRHO_PLUGIN_HAS_UI             1
 #define DISTRHO_PLUGIN_NUM_INPUTS         2
 #define DISTRHO_PLUGIN_NUM_OUTPUTS        2
+#define DISTRHO_PLUGIN_WANT_FULL_STATE    1
+#define DISTRHO_PLUGIN_WANT_STATE         1
 #define DISTRHO_PLUGIN_WANT_TIMEPOS       1
 #define DISTRHO_PLUGIN_WANT_DIRECT_ACCESS 1
 // #define DISTRHO_PLUGIN_LV2_CATEGORY       "lv2:AnalyserPlugin"

src/PluginContext.hpp

@@ -25,6 +25,7 @@
 #endif
 
 #include "DistrhoPlugin.hpp"
+#include "extra/Mutex.hpp"
 
 START_NAMESPACE_DISTRHO
 
@@ -39,6 +40,9 @@ public:
     virtual bool canAssignDevice() const noexcept = 0;
     virtual void assignDevice(rack::audio::Device* dev) noexcept = 0;
     virtual bool clearDevice(rack::audio::Device* dev) noexcept = 0;
+
+    // ensure context validity through UI and setState
+    Mutex contextMutex;
 };
 
 // -----------------------------------------------------------------------------------------------------------
@@ -110,7 +114,7 @@ struct CardinalAudioDriver : rack::audio::Driver {
 
     std::vector<int> getDeviceIds() override
     {
-        return std::vector<int>({ 0 });
+        return std::vector<int>({ 1 });
     }
 
     std::string getDeviceName(int) override

src/Window.cpp

@@ -19,6 +19,7 @@
 #endif
 
 #include "DistrhoUI.hpp"
+#include "WindowParameters.hpp"
 
 namespace rack {
 namespace window {
@@ -67,13 +68,19 @@ std::shared_ptr<Image> Image::load(const std::string& filename) {
 }
 
 
+struct WindowParams {
+	float rackBrightness = 1.0f;
+};
+
 struct Window::Internal {
-	int mods = 0;
 	DISTRHO_NAMESPACE::UI* ui = nullptr;
-	math::Vec size = minWindowSize;
+	DISTRHO_NAMESPACE::WindowParameters params;
+	DISTRHO_NAMESPACE::WindowParametersCallback* callback = nullptr;
 
+	math::Vec size = minWindowSize;
 	std::string lastWindowTitle;
 
+	int mods = 0;
 	int frame = 0;
 	int frameSwapInterval = 1;
 	double monitorRefreshRate = 60.0; // FIXME
@@ -107,6 +114,9 @@ void WindowInit(Window* const window, DISTRHO_NAMESPACE::UI* const ui)
 	window->uiFont = window->loadFont(asset::system("res/fonts/DejaVuSans.ttf"));
 	bndSetFont(window->uiFont->handle);
 
+	// Init settings
+	WindowParametersRestore(window);
+
 	if (APP->scene) {
 		widget::Widget::ContextCreateEvent e;
 		APP->scene->onContextCreate(e);
@@ -321,3 +331,59 @@ bool& Window::fbDirtyOnSubpixelChange() {
 
 } // namespace window
 } // namespace rack
+
+
+START_NAMESPACE_DISTRHO
+
+void WindowParametersSave(rack::window::Window* const window)
+{
+	if (d_isNotEqual(window->internal->params.cableOpacity, rack::settings::cableOpacity))
+	{
+		window->internal->params.cableOpacity = rack::settings::cableOpacity;
+		if (window->internal->callback != nullptr)
+			window->internal->callback->WindowParametersChanged(kWindowParameterCableOpacity,
+			                                                    rack::settings::cableOpacity);
+	}
+	if (d_isNotEqual(window->internal->params.cableTension, rack::settings::cableTension))
+	{
+		window->internal->params.cableTension = rack::settings::cableTension;
+		if (window->internal->callback != nullptr)
+			window->internal->callback->WindowParametersChanged(kWindowParameterCableTension,
+			                                                    rack::settings::cableTension);
+	}
+	if (d_isNotEqual(window->internal->params.rackBrightness, rack::settings::rackBrightness))
+	{
+		window->internal->params.rackBrightness = rack::settings::rackBrightness;
+		if (window->internal->callback != nullptr)
+			window->internal->callback->WindowParametersChanged(kWindowParameterRackBrightness,
+			                                                    rack::settings::rackBrightness);
+	}
+	if (d_isNotEqual(window->internal->params.haloBrightness, rack::settings::haloBrightness))
+	{
+		window->internal->params.haloBrightness = rack::settings::haloBrightness;
+		if (window->internal->callback != nullptr)
+			window->internal->callback->WindowParametersChanged(kWindowParameterHaloBrightness,
+			                                                    rack::settings::haloBrightness);
+	}
+}
+
+void WindowParametersRestore(rack::window::Window* const window)
+{
+	rack::settings::cableOpacity = window->internal->params.cableOpacity;
+	rack::settings::cableTension = window->internal->params.cableTension;
+	rack::settings::rackBrightness = window->internal->params.rackBrightness;
+	rack::settings::haloBrightness = window->internal->params.haloBrightness;
+}
+
+void WindowParametersSetCallback(rack::window::Window* const window, WindowParametersCallback* const callback)
+{
+	window->internal->callback = callback;
+}
+
+void WindowParametersSetValues(rack::window::Window* const window, const WindowParameters& params)
+{
+	window->internal->params = params;
+}
+
+END_NAMESPACE_DISTRHO
+

src/WindowParameters.hpp

@@ -0,0 +1,60 @@
+/*
+ * DISTRHO Cardinal Plugin
+ * Copyright (C) 2021 Filipe Coelho <falktx@falktx.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 3 of
+ * the License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * For a full copy of the GNU General Public License see the LICENSE file.
+ */
+
+#pragma once
+
+#include "DistrhoUtils.hpp"
+
+namespace rack {
+namespace window {
+struct Window;
+}
+}
+
+START_NAMESPACE_DISTRHO
+
+// -----------------------------------------------------------------------------------------------------------
+
+enum WindowParameterList {
+    kWindowParameterCableOpacity,
+    kWindowParameterCableTension,
+    kWindowParameterRackBrightness,
+    kWindowParameterHaloBrightness,
+    kWindowParameterCount,
+};
+
+struct WindowParameters {
+    float cableOpacity = 0.5f;
+    float cableTension = 0.5f;
+    float rackBrightness = 1.0f;
+    float haloBrightness = 0.25f;
+    // KnobMode knobMode = KNOB_MODE_LINEAR;
+};
+
+struct WindowParametersCallback {
+    virtual ~WindowParametersCallback() {}
+    virtual void WindowParametersChanged(WindowParameterList param, float value) = 0;
+};
+
+void WindowParametersSave(rack::window::Window* window);
+void WindowParametersRestore(rack::window::Window* window);
+void WindowParametersSetCallback(rack::window::Window* window, WindowParametersCallback* callback);
+void WindowParametersSetValues(rack::window::Window* window, const WindowParameters& params);
+
+// -----------------------------------------------------------------------------------------------------------
+
+END_NAMESPACE_DISTRHO