Android: Refactor some of the glue code.

* Cleanup RockboxService.java by moving the battery and
  headphone monitors to separate classes and detaching their instances
* Move those monitors and RockboxTelephony.java into a new
  monitors subdirectory
* Call those monitors all the same from native code by creating
  the objects there

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30160 a1c6a512-1295-4272-9138-f99709370657

3 files changed, 231 insertions, 0 deletions

diff --git a/android/src/org/rockbox/monitors/BatteryMonitor.java b/android/src/org/rockbox/monitors/BatteryMonitor.java
new file mode 100644
index 0000000000..0896a58242
--- /dev/null
+++ b/android/src/org/rockbox/monitors/BatteryMonitor.java
@@ -0,0 +1,74 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2011 Thomas Martitz
+ *
+ * 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+package org.rockbox.monitors;
+
+import java.util.Timer;
+import java.util.TimerTask;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+
+public class BatteryMonitor extends BroadcastReceiver
+{
+    private final IntentFilter mBattFilter;
+    private final Context mContext;
+    @SuppressWarnings("unused")
+    private int mBattLevel; /* read by native code */
+    
+    /*
+     * We get literally spammed with battery status updates
+     * Therefore we actually unregister after each onReceive() and
+     * setup a timer to re-register in 30s */
+    public BatteryMonitor(Context c)
+    {
+        mBattFilter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);
+        mContext = c;
+        Timer t = new Timer();
+        TimerTask task = new TimerTask()
+        {
+            public void run()
+            {
+                attach();
+            }
+        };
+        t.schedule(task, 5000, 30000);
+        attach();
+    }
+
+    @Override
+    public void onReceive(Context arg0, Intent intent)
+    {
+       int rawlevel = intent.getIntExtra("level", -1);
+       int scale = intent.getIntExtra("scale", -1);
+       if (rawlevel >= 0 && scale > 0)
+           mBattLevel = (rawlevel * 100) / scale;
+       else
+           mBattLevel = -1;
+       mContext.unregisterReceiver(this);
+    }
+    
+    void attach()
+    {
+        mContext.registerReceiver(this, mBattFilter);
+    }
+}
diff --git a/android/src/org/rockbox/monitors/HeadphoneMonitor.java b/android/src/org/rockbox/monitors/HeadphoneMonitor.java
new file mode 100644
index 0000000000..99d2f7ab8a
--- /dev/null
+++ b/android/src/org/rockbox/monitors/HeadphoneMonitor.java
@@ -0,0 +1,60 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2011 Thomas Martitz
+ *
+ * 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+package org.rockbox.monitors;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+
+public class HeadphoneMonitor extends BroadcastReceiver
+{
+    @SuppressWarnings("unused")
+    private int mHpState; /* read by native code */
+
+    public HeadphoneMonitor(Context c)
+    {
+        IntentFilter hpFilter = new IntentFilter(Intent.ACTION_HEADSET_PLUG);
+        /* caution: hidden API; might break */
+        IntentFilter noisyFilter = new IntentFilter("android.media.AUDIO_BECOMING_NOISY");
+        
+        c.registerReceiver(this, hpFilter);
+        c.registerReceiver(new NoisyMonitor(), noisyFilter);
+    }
+
+    @Override
+    public void onReceive(Context arg0, Intent intent)
+    {
+        int state = intent.getIntExtra("state", -1);
+        mHpState = state;   
+    }
+
+    /* audio becoming noise acts as headphones extracted */
+    private class NoisyMonitor extends BroadcastReceiver
+    {
+        @Override
+        public void onReceive(Context arg0, Intent arg1)
+        {
+            mHpState = 0;   
+        }
+    }
+}
diff --git a/android/src/org/rockbox/monitors/TelephonyMonitor.java b/android/src/org/rockbox/monitors/TelephonyMonitor.java
new file mode 100644
index 0000000000..6881f243af
--- /dev/null
+++ b/android/src/org/rockbox/monitors/TelephonyMonitor.java
@@ -0,0 +1,97 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2010 Thomas Martitz
+ *
+ * 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+package org.rockbox.monitors;
+
+import android.content.Context;
+import android.os.Handler;
+import android.telephony.PhoneStateListener;
+import android.telephony.TelephonyManager;
+
+public class TelephonyMonitor 
+{
+    public TelephonyMonitor(Context c)
+    {
+        final Handler handler = new Handler(c.getMainLooper());        
+        final TelephonyManager tm = (TelephonyManager)
+            c.getSystemService(Context.TELEPHONY_SERVICE);
+        handler.post(new Runnable()
+        {
+            @Override
+            public void run()
+            {   /* need to instantiate from a thread that has a Looper */
+                tm.listen(new RockboxCallStateListener(), PhoneStateListener.LISTEN_CALL_STATE);
+            }
+        });
+    }
+
+    private class RockboxCallStateListener extends PhoneStateListener
+    {
+        private int last_state;
+
+        public RockboxCallStateListener()
+        {
+            super();
+            /* set artificial initial state, 
+             * we will get an initial event shortly after this,
+             * so to handle it correctly we need an invalid state set */
+            last_state = TelephonyManager.CALL_STATE_IDLE - 10;
+        }
+
+        private void handleState(int state)
+        {
+            if (state == last_state)
+                return;
+            switch (state) 
+            {
+                case TelephonyManager.CALL_STATE_IDLE:
+                    postCallHungUp();
+                    break;
+                case TelephonyManager.CALL_STATE_RINGING:
+                    postCallIncoming();
+                    break;
+                case TelephonyManager.CALL_STATE_OFFHOOK:
+                    /* for incoming calls we handled at RINGING already,
+                     * if the previous state was IDLE then 
+                     * this is an outgoing call
+                     */
+                    if (last_state == TelephonyManager.CALL_STATE_IDLE)
+                    {   /* currently handled the same as incoming calls */
+                        postCallIncoming();
+                    }
+                    break;
+                default:
+                    return;
+            }
+            last_state = state;
+            
+        }
+        
+        @Override
+        public void onCallStateChanged(int state, String number)
+        {
+            super.onCallStateChanged(state, number);
+            handleState(state);
+        }
+    }
+    private native void postCallIncoming();
+    private native void postCallHungUp();
+}