Allow loading arbitrary files/binaries as plugins

Signed-off-by: falkTX <falktx@falktx.com>

carla

@@ -1 +1 @@
-Subproject commit 699515158062a95d2bbee246e5a19e06d4e3c2bd
+Subproject commit df1338860e0b6fae36b974618ecfeb005051158b

dpf

@@ -1 +1 @@
-Subproject commit 1bdbb7d9e13fc6e1f25506c127efa3cd48ec91ef
+Subproject commit 55a1e21ebbb42a4778f26188a9f75aecb0c1210c

plugins/Common/IldaeilUI.cpp

@@ -167,7 +167,7 @@ class IldaeilUI : public UI,
     bool fPluginSearchFirstShow;
     char fPluginSearchString[0xff];
 
-    String fPopupError;
+    String fPopupError, fPluginFilename;
     Size<uint> fNextSize;
 
     struct RunnerData {
@@ -533,6 +533,7 @@ public:
         {
             fPluginRunning = true;
             fPluginGenericUI = nullptr;
+            fPluginFilename.clear();
             showPluginUI(handle, false);
 
 #ifdef WASM_TESTING
@@ -557,6 +558,36 @@ public:
         repaint();
     }
 
+    void loadFileAsPlugin(const CarlaHostHandle handle, const char* const filename)
+    {
+        if (fPluginRunning || fPluginId != 0)
+        {
+            hidePluginUI(handle);
+            carla_replace_plugin(handle, fPluginId);
+        }
+
+        carla_set_engine_option(handle, ENGINE_OPTION_PREFER_PLUGIN_BRIDGES, fPluginWillRunInBridgeMode, nullptr);
+
+        const MutexLocker cml(fPlugin->sPluginInfoLoadMutex);
+
+        if (carla_load_file(handle, filename))
+        {
+            fPluginRunning = true;
+            fPluginGenericUI = nullptr;
+            fPluginFilename = filename;
+            showPluginUI(handle, false);
+        }
+        else
+        {
+            fPopupError = carla_get_last_error(handle);
+            d_stdout("got error: %s", fPopupError.buffer());
+            fDrawingState = kDrawingPluginError;
+            fPluginFilename.clear();
+        }
+
+        repaint();
+    }
+
 protected:
     void pluginWindowResized(const uint width, const uint height) override
     {
@@ -609,7 +640,10 @@ protected:
 
         case kIdleResetPlugin:
             fIdleState = kIdleNothing;
-            loadPlugin(handle, carla_get_plugin_info(handle, fPluginId)->label);
+            if (fPluginFilename.isNotEmpty())
+                loadFileAsPlugin(handle, fPluginFilename.buffer());
+            else
+                loadPlugin(handle, carla_get_plugin_info(handle, fPluginId)->label);
             break;
 
         case kIdleOpenFileUI:
@@ -643,10 +677,19 @@ protected:
             fIdleState = kIdleNothing;
             if (fPluginRunning)
                 hidePluginUI(handle);
-            fPluginSelected = -1;
-            stopRunner();
-            fPluginType = fNextPluginType;
-            initAndStartRunner();
+            if (fNextPluginType == PLUGIN_TYPE_COUNT)
+            {
+                FileBrowserOptions opts;
+                opts.title = "Load from file";
+                openFileBrowser(opts);
+            }
+            else
+            {
+                fPluginSelected = -1;
+                stopRunner();
+                fPluginType = fNextPluginType;
+                initAndStartRunner();
+            }
             break;
 
         case kIdleNothing:
@@ -689,7 +732,12 @@ protected:
     void uiFileBrowserSelected(const char* const filename) override
     {
         if (fPlugin != nullptr && fPlugin->fCarlaHostHandle != nullptr && filename != nullptr)
-            carla_set_custom_data(fPlugin->fCarlaHostHandle, fPluginId, CUSTOM_DATA_TYPE_STRING, "file", filename);
+        {
+            if (fNextPluginType == PLUGIN_TYPE_COUNT)
+                loadFileAsPlugin(fPlugin->fCarlaHostHandle, filename);
+            else
+                carla_set_custom_data(fPlugin->fCarlaHostHandle, fPluginId, CUSTOM_DATA_TYPE_STRING, "file", filename);
+        }
     }
 
     bool initAndStartRunner()
@@ -1087,6 +1135,7 @@ protected:
             getPluginTypeAsString(PLUGIN_INTERNAL),
             getPluginTypeAsString(PLUGIN_LV2),
             getPluginTypeAsString(PLUGIN_JSFX),
+            "Load from file..."
         };
 
         setupMainWindowPos();
@@ -1157,6 +1206,9 @@ protected:
                 case 2:
                     fNextPluginType = PLUGIN_JSFX;
                     break;
+                case 3:
+                    fNextPluginType = PLUGIN_TYPE_COUNT;
+                    break;
                 }
             }