Run Rockbox as a service, which allows for music decoding&playback in the background,

the activity only attaches to the framebuffer for displaying it. An icon
in the notification area is displayed (it could be prettier I guess).

Note: Some HTC phones won't, includng mine, get enough CPU time to do background decoding
fluently, see: http://code.google.com/p/android/issues/detail?id=9663

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27686 a1c6a512-1295-4272-9138-f99709370657

android/AndroidManifest.xml

@@ -10,7 +10,8 @@
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
-        </activity>
+      	</activity>
+        <service android:name=".RockboxService"/>
 
     </application>
 <uses-sdk android:minSdkVersion="4" />

android/default.properties

@@ -8,4 +8,4 @@
 # project structure.
 
 # Project target.
-target=android-4
+target=android-7

android/gen/org/rockbox/R.java

@@ -12,11 +12,13 @@ public final class R {
     }
     public static final class drawable {
         public static final int icon=0x7f020000;
+        public static final int rb=0x7f020001;
     }
     public static final class layout {
         public static final int main=0x7f030000;
     }
     public static final class string {
         public static final int app_name=0x7f040000;
+        public static final int notification=0x7f040001;
     }
 }

android/res/values/strings.xml

@@ -2,4 +2,5 @@
 <resources>
     
     <string name="app_name">Rockbox</string>
+<string name="notification">Rockbox</string>
 </resources>

android/src/org/rockbox/RockboxActivity.java

@@ -21,128 +21,81 @@
 
 package org.rockbox;
 
-import java.io.BufferedInputStream;
-import java.io.BufferedOutputStream;
-import java.io.File;
-import java.io.FileOutputStream;
-import java.util.Enumeration;
-import java.util.zip.ZipEntry;
-import java.util.zip.ZipFile;
-
 import android.app.Activity;
-import android.graphics.Rect;
+import android.content.Intent;
 import android.os.Bundle;
 import android.util.Log;
+import android.view.ViewGroup;
 import android.view.Window;
 import android.view.WindowManager;
 
 public class RockboxActivity extends Activity {
-    /** Called when the activity is first created. */
-    public RockboxFramebuffer fb;
-    private Thread rb;
-    static final int BUFFER = 2048;
     /** Called when the activity is first created. */
     @Override
-    public void onCreate(Bundle savedInstanceState) {
+    public void onCreate(Bundle savedInstanceState) 
+    {
         super.onCreate(savedInstanceState);
-    	LOG("start rb");
         requestWindowFeature(Window.FEATURE_NO_TITLE);
         getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN
-                       ,WindowManager.LayoutParams.FLAG_FULLSCREEN); 
+                       ,WindowManager.LayoutParams.FLAG_FULLSCREEN);
-        fb = new RockboxFramebuffer(this);
+        final Intent intent = new Intent(this, 
-        if (true) {
+                RockboxService.class);
-        try 
+        startService(intent);
+        /* Now it gets a bit tricky:
+         * The service is started in the same thread as we are now,
+         * but the service also initializes the framebuffer
+         * Unforunately, this happens *after* any of the default 
+         * startup methods of an activity, so we need to poll for it 
+         * 
+         * In order to get the fb, we need to let the Service start up
+         * run, we can wait in a separate thread for fb to get ready
+		 * This thread waits for the fb to become ready */
+        new Thread(new Runnable()
         {
-           BufferedOutputStream dest = null;
+        	public void run() {
-           BufferedInputStream is = null;
+        		while (RockboxService.fb == null)
-           ZipEntry entry;
+        		{
-           File file = new File("/data/data/org.rockbox/lib/libmisc.so");
+					try {
-           /* use arbitary file to determine whether extracting is needed */
+						Thread.sleep(250);
-           File file2 = new File("/data/data/org.rockbox/app_rockbox/rockbox/codecs/mpa.codec");
+					} catch (InterruptedException e) {
-           if (!file2.exists() || (file.lastModified() > file2.lastModified()))
+					} catch (Exception e) {
-           {
+						LOG(e.toString());
-	           ZipFile zipfile = new ZipFile(file);
+					}
-	           Enumeration<? extends ZipEntry> e = zipfile.entries();
+					/* drawing needs to happen in ui thread */
-	           File folder;
+					runOnUiThread(new Runnable() 
-	           while(e.hasMoreElements()) {
+					{	@Override
-	              entry = (ZipEntry) e.nextElement();
+						public void run() {
-	              LOG("Extracting: " +entry);
+							setContentView(RockboxService.fb);
-	              if (entry.isDirectory())
+							RockboxService.fb.invalidate();
-	              {
+						}
-	            	  folder = new File(entry.getName());
+					});
-	            	  LOG("mkdir "+ entry);
+        		} 
-	            	  try {
+        		
-	            		  folder.mkdirs();
+        	}
-	            	  } catch (SecurityException ex){
+        }).start();
-	            		  LOG(ex.getMessage());
-	            	  }
-	            	  continue;
-	              }
-	              is = new BufferedInputStream(zipfile.getInputStream(entry));
-	              int count;
-	              byte data[] = new byte[BUFFER];
-	              folder = new File(new File(entry.getName()).getParent());
-	              LOG("" + folder.getAbsolutePath());
-	              if (!folder.exists())
-	            	  folder.mkdirs();
-	              FileOutputStream fos = new FileOutputStream(entry.getName());
-	              dest = new BufferedOutputStream(fos, BUFFER);
-	              while ((count = is.read(data, 0, BUFFER)) != -1) {
-	                 dest.write(data, 0, count);
-	              }
-	              dest.flush();
-	              dest.close();
-	              is.close();
-	           }
-           }
-        } catch(Exception e) {
-           e.printStackTrace();
-        }}
-        Rect r = new Rect();
-        fb.getDrawingRect(r);
-        LOG(r.left + " " + r.top + " " + r.right + " " + r.bottom);
-    	rb = new Thread(new Runnable()
-    	{
-    		public void run()
-    		{
-    			main();
-    		}
-    	},"Rockbox thread");
-        System.loadLibrary("rockbox");
-        rb.setDaemon(false);
-        setContentView(fb);
-    }
-
-	private void LOG(CharSequence text)
-	{
-		Log.d("RockboxBootloader", (String) text);
-	}
-
-    public synchronized void onStart()
-    {
-    	super.onStart();
-    	if (!rb.isAlive())
-    		rb.start();
-    }
-    
-    public void onPause()
-    {
-    	super.onPause();
     }
     
     public void onResume()
     {
     	super.onResume();
-    	switch (rb.getState()) {
+    	if (RockboxService.fb != null)
-    	case BLOCKED: LOG("BLOCKED"); break;
+    	{
-    	case RUNNABLE: LOG("RUNNABLE"); break;
+    		try {
-    	case NEW: LOG("NEW"); break;
+    			setContentView(RockboxService.fb);
-    	case TERMINATED: LOG("TERMINATED"); break;
+    		} catch (IllegalStateException e) {
-    	case TIMED_WAITING: LOG("TIMED_WAITING"); break;
+    			/* we are already using the View,
-    	case WAITING: LOG("WAITING"); break;
+    			 * need to remove it and re-attach it */
+    			ViewGroup g = (ViewGroup)RockboxService.fb.getParent();
+    			g.removeView(RockboxService.fb);
+    			setContentView(RockboxService.fb);
+    		} catch (Exception e) {
+    			LOG(e.toString());
+    		}
     	}
     }
 
-
+	private void LOG(CharSequence text)
-    private native void main();
+	{
+		Log.d("Rockbox", (String) text);
+	}	
 }

android/src/org/rockbox/RockboxTimer.java

@@ -47,21 +47,6 @@ public class RockboxTimer extends Timer
 		}
 	}
 	
-	public void pause()
-	{
-		cancel();
-	}
-	public void resume()
-	{
-		try {
-			schedule(task, 0, interval);
-		} catch (IllegalStateException e) {
-			/* not an error */
-		} catch (Exception e) {
-			LOG(e.toString());
-		}
-	}
-	
 	public RockboxTimer(long period_inverval_in_ms)
 	{
 		super("tick timer", false);
@@ -72,7 +57,7 @@ public class RockboxTimer extends Timer
 
 	private void LOG(CharSequence text)
 	{
-		Log.d("RockboxBootloader", (String) text);	
+		Log.d("Rockbox", (String) text);	
 	}
 
 

firmware/target/hosted/android/kernel-android.c

@@ -25,8 +25,6 @@
 #include "system.h"
 
 extern JNIEnv *env_ptr;
-extern jclass  RockboxActivity_class;
-extern jobject RockboxActivity_instance;
 
 static jclass  RockboxTimer_class;
 static jobject RockboxTimer_instance;

firmware/target/hosted/android/lcd-android.c

@@ -26,8 +26,8 @@
 #include "lcd.h"
 
 extern JNIEnv *env_ptr;
-extern jclass  RockboxActivity_class;
+extern jclass  RockboxService_class;
-extern jobject RockboxActivity_instance;
+extern jobject RockboxService_instance;
 
 static jobject Framebuffer_instance;
 static jmethodID java_lcd_update;
@@ -35,13 +35,13 @@ static jmethodID java_lcd_update;
 void lcd_init_device(void)
 {
     /* get the RockboxFramebuffer instance allocated by the activity */
-    jfieldID id = (*env_ptr)->GetFieldID(env_ptr,
+    jfieldID id = (*env_ptr)->GetStaticFieldID(env_ptr,
-                                         RockboxActivity_class,
+                                         RockboxService_class,
                                          "fb",
                                          "Lorg/rockbox/RockboxFramebuffer;");
 
-    Framebuffer_instance = (*env_ptr)->GetObjectField(env_ptr,
+    Framebuffer_instance = (*env_ptr)->GetStaticObjectField(env_ptr,
-                                                      RockboxActivity_instance,
+                                                      RockboxService_class,
                                                       id);
 
     jclass Framebuffer_class = (*env_ptr)->GetObjectClass(env_ptr,

firmware/target/hosted/android/pcm-android.c

@@ -25,8 +25,6 @@
 #include "pcm.h"
 
 extern JNIEnv *env_ptr;
-extern jclass  RockboxActivity_class;
-extern jobject RockboxActivity_instance;
 
 /* infos about our pcm chunks */
 static size_t  pcm_data_size;

firmware/target/hosted/android/system-android.c

@@ -32,8 +32,8 @@ void system_init(void) { }
 
 /* global fields for use with various JNI calls */
 JNIEnv *env_ptr;
-jobject RockboxActivity_instance;
+jobject RockboxService_instance;
-jclass  RockboxActivity_class;
+jclass  RockboxService_class;
 
 uintptr_t *stackbegin;
 uintptr_t *stackend;
@@ -41,7 +41,7 @@ uintptr_t *stackend;
 extern int main(void);
 /* this is the entry point of the android app initially called by jni */
 JNIEXPORT void JNICALL
-Java_org_rockbox_RockboxActivity_main(JNIEnv *env, jobject this)
+Java_org_rockbox_RockboxService_main(JNIEnv *env, jobject this)
 {
     /* hack!!! we can't have a valid stack pointer otherwise.
      * but we don't really need it anyway, thread.c only needs it
@@ -53,7 +53,7 @@ Java_org_rockbox_RockboxActivity_main(JNIEnv *env, jobject this)
     volatile uintptr_t stack = 0;
     stackbegin = stackend = (uintptr_t*) &stack;
     env_ptr = env;
-    RockboxActivity_instance = this;
+    RockboxService_instance = this;
-    RockboxActivity_class = (*env)->GetObjectClass(env, this);
+    RockboxService_class = (*env)->GetObjectClass(env, this);
     main();
 }