Projucer: Add manifest option to allow virtual MIDI on Android

extras/Projucer/Source/ProjectSaving/jucer_ProjectExport_Android.h

@@ -34,7 +34,6 @@
 
 #pragma once
 
-
 //==============================================================================
 class AndroidProjectExporter final : public ProjectExporter
 {
@@ -113,7 +112,8 @@ public:
                                  androidReadMediaVideoPermission, androidExternalWritePermission,
                                  androidInAppBillingPermission, androidVibratePermission, androidOtherPermissions, androidPushNotifications,
                                  androidEnableRemoteNotifications, androidRemoteNotificationsConfigFile, androidEnableContentSharing, androidKeyStore,
-                                 androidKeyStorePass, androidKeyAlias, androidKeyAliasPass, gradleVersion, gradleToolchain, gradleClangTidy, androidPluginVersion;
+                                 androidKeyStorePass, androidKeyAlias, androidKeyAliasPass, gradleVersion, gradleToolchain, gradleClangTidy, androidPluginVersion,
+                                 androidEnableVirtualMidi;
 
     //==============================================================================
     AndroidProjectExporter (Project& p, const ValueTree& t)
@@ -161,6 +161,7 @@ public:
           gradleToolchain                      (settings, Ids::gradleToolchain,                      getUndoManager(), "clang"),
           gradleClangTidy                      (settings, Ids::gradleClangTidy,                      getUndoManager(), false),
           androidPluginVersion                 (settings, Ids::androidPluginVersion,                 getUndoManager(), "8.10.0"),
+          androidEnableVirtualMidi             (settings, Ids::androidEnableVirtualMidi,             getUndoManager(), false),
           AndroidExecutable                    (getAppSettings().getStoredPath (Ids::androidStudioExePath, TargetOS::getThisOS()).get().toString())
     {
         name = getDisplayName();
@@ -235,6 +236,7 @@ public:
         {
             copyAdditionalJavaLibs (appFolder);
             writeStringsXML        (targetFolder);
+            writeDeviceInfoXML     (targetFolder);
             writeAppIcons          (targetFolder);
         }
 
@@ -999,6 +1001,9 @@ private:
         if (isInAppBillingEnabled())
             addOptJavaFolderToSourceSetsForModule (javaSourceSets, modules, "juce_product_unlocking");
 
+        if (isVirtualMidiEnabled())
+            addOptJavaFolderToSourceSetsForModule (javaSourceSets, modules, "juce_audio_devices");
+
         MemoryOutputStream mo;
         mo.setNewLineString (getNewLineString());
 
@@ -1215,6 +1220,11 @@ private:
         props.add (new TextPropertyComponent (androidRemoteNotificationsConfigFile.getPropertyAsValue(), "Remote Notifications Config File", 2048, false),
                    "Path to google-services.json file. This will be the file provided by Firebase when creating a new app in Firebase console.");
 
+        props.add (new ChoicePropertyComponent (androidEnableVirtualMidi, "Enable Virtual MIDI"),
+                   "When enabled, this will add entries to your application manifest declaring that your program "
+                   "can provide the MidiDeviceService and/or MidiUmpDeviceService."
+                   "This has no effect unless the juce_audio_devices module is included in the project.");
+
         props.add (new TextPropertyComponent (androidManifestCustomXmlElements, "Custom Manifest XML Content", 8192, true),
                    "You can specify custom AndroidManifest.xml content overriding the default one generated by Projucer. "
                    "Projucer will automatically create any missing and required XML elements and attributes "
@@ -1341,6 +1351,12 @@ private:
               && androidEnableRemoteNotifications.get();
     }
 
+    bool isVirtualMidiEnabled() const
+    {
+        return project.getEnabledModules().isModuleEnabled ("juce_audio_devices")
+              && androidEnableVirtualMidi.get();
+    }
+
     bool isInAppBillingEnabled() const
     {
         return project.getEnabledModules().isModuleEnabled ("juce_product_unlocking")
@@ -1395,6 +1411,58 @@ private:
         }
     }
 
+    void writeDeviceInfoXML (const File& folder) const
+    {
+        const auto makeDeviceNode = [this] (XmlElement& devices)
+        {
+            auto* device = devices.createNewChildElement ("device");
+            device->setAttribute ("manufacturer", project.getCompanyNameString());
+            device->setAttribute ("product", projectName);
+
+            const auto deviceName = (project.getCompanyNameString().isNotEmpty() ? (project.getCompanyNameString() + " ") : "")
+                                  + projectName;
+            device->setAttribute ("name", deviceName);
+            return device;
+        };
+
+        if (isVirtualMidiEnabled())
+        {
+            {
+                auto path = folder.getChildFile ("app")
+                                  .getChildFile ("src")
+                                  .getChildFile ("main")
+                                  .getChildFile ("res")
+                                  .getChildFile ("xml")
+                                  .getChildFile ("juce_midi_virtual_ump.xml");
+
+                auto devices = std::make_unique<XmlElement> ("devices");
+                auto* device = makeDeviceNode (*devices);
+                auto* port = device->createNewChildElement ("port");
+                port->setAttribute ("name", "MIDI 2.0");
+
+                writeXmlOrThrow (*devices, path, "utf-8", 100, true);
+            }
+
+            {
+                auto path = folder.getChildFile ("app")
+                                  .getChildFile ("src")
+                                  .getChildFile ("main")
+                                  .getChildFile ("res")
+                                  .getChildFile ("xml")
+                                  .getChildFile ("juce_midi_virtual_bytestream.xml");
+
+                auto devices = std::make_unique<XmlElement> ("devices");
+                auto* device = makeDeviceNode (*devices);
+                auto* portIn = device->createNewChildElement ("input-port");
+                portIn->setAttribute ("name", "In");
+                auto* portOut = device->createNewChildElement ("output-port");
+                portOut->setAttribute ("name", "Out");
+
+                writeXmlOrThrow (*devices, path, "utf-8", 100, true);
+            }
+        }
+    }
+
     void writeAndroidManifest (const File& folder) const
     {
         std::unique_ptr<XmlElement> manifest (createManifestXML());
@@ -1898,6 +1966,39 @@ private:
             metaData->setAttribute ("android:name", "firebase_analytics_collection_deactivated");
             metaData->setAttribute ("android:value", "true");
         }
+
+        if (isVirtualMidiEnabled())
+        {
+            {
+                auto* service = application.createNewChildElement ("service");
+                service->setAttribute ("android:name", "com.rmsl.juce.VirtualMidiServices$VirtualUmpService");
+                service->setAttribute ("android:enabled", "false");
+                service->setAttribute ("android:exported", "true");
+                service->setAttribute ("android:permission", "android.permission.BIND_MIDI_DEVICE_SERVICE");
+
+                auto* intentFilter = service->createNewChildElement ("intent-filter");
+                intentFilter->createNewChildElement ("action")->setAttribute ("android:name", "android.media.midi.MidiUmpDeviceService");
+
+                auto* property = service->createNewChildElement ("property");
+                property->setAttribute ("android:name", "android.media.midi.MidiUmpDeviceService");
+                property->setAttribute ("android:resource", "@xml/juce_midi_virtual_ump");
+            }
+
+            {
+                auto* service = application.createNewChildElement ("service");
+                service->setAttribute ("android:name", "com.rmsl.juce.VirtualMidiServices$VirtualBytestreamService");
+                service->setAttribute ("android:enabled", "false");
+                service->setAttribute ("android:exported", "true");
+                service->setAttribute ("android:permission", "android.permission.BIND_MIDI_DEVICE_SERVICE");
+
+                auto* intentFilter = service->createNewChildElement ("intent-filter");
+                intentFilter->createNewChildElement ("action")->setAttribute ("android:name", "android.media.midi.MidiDeviceService");
+
+                auto* metadata = service->createNewChildElement ("meta-data");
+                metadata->setAttribute ("android:name", "android.media.midi.MidiDeviceService");
+                metadata->setAttribute ("android:resource", "@xml/juce_midi_virtual_bytestream");
+            }
+        }
     }
 
     void createProviderElement (XmlElement& application) const

extras/Projucer/Source/Utility/Helpers/jucer_PresetIDs.h

@@ -268,6 +268,7 @@ namespace Ids
     DECLARE_ID (androidScreenOrientation);
     DECLARE_ID (androidExtraAssetsFolder);
     DECLARE_ID (androidStudioExePath);
+    DECLARE_ID (androidEnableVirtualMidi);
     DECLARE_ID (iosDeviceFamily);
     const Identifier iPhoneScreenOrientation ("iosScreenOrientation"); // old name is confusing
     DECLARE_ID (iPadScreenOrientation);