StMovieService - provide a dummy foreground Android service to keep audio playback on in background

Author: gkv311

Makefile

@@ -20,7 +20,7 @@ HAVE_MONGOOSE := -DST_HAVE_MONGOOSE
 # this, however, might lead to incomplete build on .java change without make clean.
 .SUFFIXES: .class .java
 .java.class:
-	$(JAVA_HOME)/bin/javac -source 1.7 -target 1.7 -d $(BUILD_ROOT)/java/classes -classpath $(ANDROID_PLATFORM) -sourcepath $(SRCDIR)/sview/src $<
+	$(JAVA_HOME)/bin/javac -source 1.7 -target 1.7 -d $(BUILD_ROOT)/java/classes -classpath $(ANDROID_PLATFORM) -sourcepath $(SRCDIR)/sview/src:$(BUILD_ROOT)/java/gen $<
 	cp -f $(BUILD_ROOT)/java/classes/com/sview/$(@F) $@
 
 TARGET_OS = linux
@@ -307,6 +307,7 @@ install_android:
 	cp -f -r $(BUILD_ROOT)/shaders/*       $(aDestAndroid)/assets/shaders/
 	cp -f -r $(BUILD_ROOT)/textures/*      $(aDestAndroid)/assets/textures/
 	cp -f    license-gpl-3.0.txt           $(aDestAndroid)/assets/info/license.txt
+	$(ANDROID_BUILD_TOOLS)/aapt package -v -f -m -S $(SRCDIR)/sview/res -J $(BUILD_ROOT)/java/gen -M $(SRCDIR)/sview/AndroidManifest.xml -I $(ANDROID_PLATFORM)
 
 install_android_libs: $(aStShared) $(aStGLWidgets) $(aStCore) $(aStOutAnaglyph) $(aStOutInterlace) $(aStOutDistorted) $(aStImageViewer) $(aStMoviePlayer) $(sViewAndroid)
 	cp -f $(BUILD_ROOT)/$(aStShared)       $(aDestAndroid)/lib/$(ANDROID_EABI)/

StCore/StAndroidGlue.cpp

@@ -823,16 +823,34 @@ void StAndroidGlue::setWindowFlags(const int theFlags) {
     ANativeActivity_setWindowFlags(myActivity, aFlagsToAdd, aFlagsToRemove);
 }
 
-void StAndroidGlue::setWakeLock(bool theToLock) {
-    if(myIsWakeLockSet == theToLock
+void StAndroidGlue::setWakeLock(const StString& theTitle, bool theToLock) {
+    if((myIsWakeLockSet == theToLock
+     && myWakeLockTitle == theTitle)
     || myThJniEnv == NULL) {
         return;
     }
 
     jclass    aJClassActivity = myThJniEnv->GetObjectClass(myActivity->clazz);
-    jmethodID aJMet           = myThJniEnv->GetMethodID(aJClassActivity, "setPartialWakeLockOn", "(Z)V");
-    myThJniEnv->CallVoidMethod(myActivity->clazz, aJMet, (jboolean )(theToLock ? JNI_TRUE : JNI_FALSE));
+    jmethodID aJMet           = myThJniEnv->GetMethodID(aJClassActivity, "setPartialWakeLockOn", "(Ljava/lang/String;Z)V");
+    jstring   aJStrTitle      = myThJniEnv->NewStringUTF(theTitle.toCString());
+    myThJniEnv->CallVoidMethod(myActivity->clazz, aJMet, aJStrTitle, (jboolean )(theToLock ? JNI_TRUE : JNI_FALSE));
     myIsWakeLockSet = theToLock;
+    myThJniEnv->DeleteLocalRef(aJStrTitle);
+    myWakeLockTitle = theTitle;
+}
+
+void StAndroidGlue::setWindowTitle(const StString& theTitle) {
+    if(myWindowTitle == theTitle
+    || myThJniEnv == NULL) {
+        return;
+    }
+
+    jclass    aJClassActivity = myThJniEnv->GetObjectClass(myActivity->clazz);
+    jmethodID aJMet           = myThJniEnv->GetMethodID(aJClassActivity, "setWindowTitle", "(Ljava/lang/String;)V");
+    jstring   aJStrTitle      = myThJniEnv->NewStringUTF(theTitle.toCString());
+    myThJniEnv->CallVoidMethod(myActivity->clazz, aJMet, aJStrTitle);
+    myThJniEnv->DeleteLocalRef(aJStrTitle);
+    myWindowTitle = theTitle;
 }
 
 void StAndroidGlue::setHardwareStereoOn(const bool theToEnable) {

StCore/StWindowImpl.cpp

@@ -622,7 +622,7 @@ void StWindowImpl::updateBlockSleep() {
     }
     if(myParentWin != NULL) {
         myParentWin->setWindowFlags(aFlags);
-        myParentWin->setWakeLock(toWakeLock);
+        myParentWin->setWakeLock(myWindowTitle, toWakeLock);
     }
 #elif defined(__linux__)
     if(attribs.ToBlockSleepDisplay) { // || attribs.ToBlockSleepSystem

StCore/StWindowImplAnd.cpp

@@ -493,18 +493,34 @@ void StWindowImpl::processEvents() {
 
     // check onNewIntent event
     StString aDndFile;
+    myParentWin->setWindowTitle(myWindowTitle);
     myParentWin->setHardwareStereoOn(myToEnableStereoHW);
     myParentWin->setTrackOrientation(myToTrackOrient);
     myParentWin->setHideSystemBars(myToHideStatusBar, myToHideNavBar);
     myParentWin->fetchState(aDndFile, myQuaternion, myToSwapEyesHW, myKeysState);
     if(!aDndFile.isEmpty()) {
-        std::vector<const char*> aDndList;
-        aDndList.push_back(aDndFile.toCString());
-        myStEvent.Type = stEvent_FileDrop;
-        myStEvent.DNDrop.Time = getEventTime();
-        myStEvent.DNDrop.NbFiles = aDndList.size();
-        myStEvent.DNDrop.Files   = &aDndList[0];
-        myEventsBuffer.append(myStEvent);
+        // notice - unpress event will NOT be generated!
+        myStEvent.Type      = stEvent_KeyDown;
+        myStEvent.Key.Time  = getEventTime();
+        myStEvent.Key.Flags = ST_VF_NONE;
+        if(aDndFile == "ACTION_PLAY_PREV") {
+            myStEvent.Key.VKey  = ST_VK_MEDIA_PREV_TRACK;
+            myEventsBuffer.append(myStEvent);
+        } else if(aDndFile == "ACTION_PLAY_NEXT") {
+            myStEvent.Key.VKey  = ST_VK_MEDIA_NEXT_TRACK;
+            myEventsBuffer.append(myStEvent);
+        } else if(aDndFile == "ACTION_PLAY_PAUSE") {
+            myStEvent.Key.VKey  = ST_VK_MEDIA_PLAY_PAUSE;
+            myEventsBuffer.append(myStEvent);
+        } else {
+            std::vector<const char*> aDndList;
+            aDndList.push_back(aDndFile.toCString());
+            myStEvent.Type = stEvent_FileDrop;
+            myStEvent.DNDrop.Time = getEventTime();
+            myStEvent.DNDrop.NbFiles = aDndList.size();
+            myStEvent.DNDrop.Files   = &aDndList[0];
+            myEventsBuffer.append(myStEvent);
+        }
     }
 
     updateActiveState();

include/StCore/StAndroidGlue.h

@@ -159,10 +159,15 @@ class StAndroidGlue {
      */
     ST_CPPEXPORT void setWindowFlags(const int theFlags);
 
+    /**
+     * Setup window title.
+     */
+    ST_CPPEXPORT void setWindowTitle(const StString& theTitle);
+
     /**
      * Set/release WAKE_LOCK.
      */
-    ST_CPPEXPORT void setWakeLock(bool theToLock);
+    ST_CPPEXPORT void setWakeLock(const StString& theTitle, bool theToLock);
 
     /**
      * Turn stereo output on using device-specific API.
@@ -424,6 +429,8 @@ class StAndroidGlue {
     AInputQueue*            myInputQueuePending;
     ANativeWindow*          myWindow;            //!< native window to draw into
     ANativeWindow*          myWindowPending;
+    StString                myWindowTitle;       //!< window title
+    StString                myWakeLockTitle;     //!< wake lock title
     bool                    myIsChangingSurface; //!< flag indicating surface changing state
     bool                    myIsWakeLockSet;     //!< flag indicating WAKE_LOCK enabled state
     int                     myWindowFlags;       //!< active window flags

sview/AndroidManifest.xml

@@ -8,6 +8,12 @@
                  android:hasCode="true"
                  android:icon="@drawable/ic_launcher">
         <uses-library android:name="com.s3dv.s3dvsurface" android:required="false" />
+
+        <!-- Movie Player foreground service for background audio playback  -->
+        <service android:name="com.sview.StMovieService"
+                 android:exported="false"
+                 android:description="@string/app_movie_service_desc" />
+
         <!-- Movie Player -->
         <activity android:name="com.sview.StMovieActivity"
                   android:label="@string/app_movie_name"