From f05cdc46f23bf28d31dfc4fc2ebe4d20e4d6f961 Mon Sep 17 00:00:00 2001
From: Thomas Martitz <kugel@rockbox.org>
Date: Wed, 1 Sep 2010 23:36:15 +0000
Subject: Android: don't compile powermgmt-sim.c

Instead implement a bit of battery monitoring. Currently it only fetches the battery level (in %) every 30s,
but it could do more like battery status, charger connected, voltage...
Theoretically, we could also exit/quit after some time of inactivity too
(perhaps not a bad idea since Rockbox puts a slight but still non-zero CPU load even if doing nothing).

Ironically, Rockbox is now the only way to get the exact battery level (at least I haven't found anything yet) on my phone :-)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27974 a1c6a512-1295-4272-9138-f99709370657
---
 android/src/org/rockbox/RockboxService.java | 45 +++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

(limited to 'android')

diff --git a/android/src/org/rockbox/RockboxService.java b/android/src/org/rockbox/RockboxService.java
index 8ef6b5a302..6dc69b3404 100644
--- a/android/src/org/rockbox/RockboxService.java
+++ b/android/src/org/rockbox/RockboxService.java
@@ -9,6 +9,8 @@ import java.io.IOException;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.util.Enumeration;
+import java.util.Timer;
+import java.util.TimerTask;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipFile;
 
@@ -16,7 +18,10 @@ import android.app.Notification;
 import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.app.Service;
+import android.content.BroadcastReceiver;
+import android.content.Context;
 import android.content.Intent;
+import android.content.IntentFilter;
 import android.os.IBinder;
 import android.util.Log;
 
@@ -36,6 +41,9 @@ public class RockboxService extends Service
 	private Method mStopForeground;
 	private Object[] mStartForegroundArgs = new Object[2];
 	private Object[] mStopForegroundArgs = new Object[1];
+	private IntentFilter itf;
+	private BroadcastReceiver batt_monitor;
+	private int battery_level;
 	@Override
 	public void onCreate()
 	{
@@ -161,6 +169,43 @@ public class RockboxService extends Service
 		return null;
 	}
 
+	
+	@SuppressWarnings("unused")
+	/*
+	 * Sets up the battery monitor which receives the battery level
+	 * about each 30 seconds
+	 */
+	private void initBatteryMonitor()
+	{
+		itf = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);
+		batt_monitor = new BroadcastReceiver() 
+		{			
+			@Override
+			public void onReceive(Context context, Intent intent) 
+			{
+				/* we get literally spammed with battery statuses 
+				 * if we don't delay the re-attaching
+				 */
+				TimerTask tk = new TimerTask() {
+					public void run() {
+						registerReceiver(batt_monitor, itf);
+					}
+				};
+				Timer t = new Timer();
+				context.unregisterReceiver(this);
+				int rawlevel = intent.getIntExtra("level", -1);
+				int scale = intent.getIntExtra("scale", -1);
+				if (rawlevel >= 0 && scale > 0)
+					battery_level = (rawlevel * 100) / scale;
+				else
+					battery_level = -1;
+				/* query every 30s should be sufficient */ 
+				t.schedule(tk, 30000);
+			}
+		};
+		registerReceiver(batt_monitor, itf);
+	}
+	
     /* all below is heavily based on the examples found on
      * http://developer.android.com/reference/android/app/Service.html
      */
-- 
cgit