From 4311632dd5975eb9003f1d1c8d2bddce674e21dd Mon Sep 17 00:00:00 2001
From: Christopher Eby <kreed@kreed.org>
Date: Fri, 16 Sep 2011 18:05:25 -0500
Subject: [PATCH] Add back headset only feature

---
 AndroidManifest.xml                        |  2 ++
 res/values/strings.xml                     |  6 ++++--
 res/xml/preferences.xml                    |  5 +++++
 src/org/kreed/vanilla/PlaybackService.java | 21 ++++++++++++++++++++-
 4 files changed, 31 insertions(+), 3 deletions(-)

diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 03f41017..1a61f50c 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -92,5 +92,7 @@ THE SOFTWARE.
 	<uses-permission android:name="android.permission.WAKE_LOCK" />
 	<uses-permission android:name="android.permission.READ_PHONE_STATE" />
 	<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+	<!-- This is needed for isWiredHeadsetOn() to work in some cases. (bug?) -->
+	<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
 	<supports-screens android:smallScreens="true" />
 </manifest>
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 58fff5cd..f21b119e 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -109,8 +109,10 @@ THE SOFTWARE.
 	<string name="volume_summary">Music volume</string>
 	<string name="media_button_title">Use Headset Controls</string>
 	<string name="media_button_summary">Single click for play/pause. Double click for next.</string>
-	<string name="headset_pause_title">Pause When Headset Disconnected</string>
-	<string name="headset_pause_summary">Pause when the headphones or Bluetooth device are disconnected.</string>
+	<string name="headset_only_title">External Output Only</string>
+	<string name="headset_only_summary">Only play music through an external output (e.g. headphones, Bluetooth)</string>
+	<string name="headset_pause_title">Pause When Unplugged</string>
+	<string name="headset_pause_summary">Pause when the headphones are unplugged.</string>
 
 	<string name="pref_notifications">Notifications</string>
 	<string name="notification_mode_title">Notification Mode</string>
diff --git a/res/xml/preferences.xml b/res/xml/preferences.xml
index 19bef649..06c96d18 100644
--- a/res/xml/preferences.xml
+++ b/res/xml/preferences.xml
@@ -33,6 +33,11 @@ THE SOFTWARE.
 			android:title="@string/media_button_title"
 			android:summary="@string/media_button_summary"
 			android:defaultValue="true" />
+		<CheckBoxPreference
+			android:key="headset_only"
+			android:title="@string/headset_only_title"
+			android:defaultValue="false"
+			android:summary="@string/headset_only_summary" />
 		<CheckBoxPreference
 			android:key="headset_pause"
 			android:title="@string/headset_pause_title"
diff --git a/src/org/kreed/vanilla/PlaybackService.java b/src/org/kreed/vanilla/PlaybackService.java
index b002a86a..67333a3a 100644
--- a/src/org/kreed/vanilla/PlaybackService.java
+++ b/src/org/kreed/vanilla/PlaybackService.java
@@ -114,6 +114,10 @@ public final class PlaybackService extends Service implements Handler.Callback,
 	boolean mHeadsetPause;
 	private boolean mScrobble;
 	private int mNotificationMode;
+	/**
+	 * If true, audio will not be played through the speaker.
+	 */
+	private boolean mHeadsetOnly;
 	/**
 	 * The time to wait before considering the player idle.
 	 */
@@ -126,6 +130,7 @@ public final class PlaybackService extends Service implements Handler.Callback,
 	private PowerManager.WakeLock mWakeLock;
 	private SharedPreferences mSettings;
 	private NotificationManager mNotificationManager;
+	private AudioManager mAudioManager;
 
 	SongTimeline mTimeline;
 	int mState;
@@ -163,6 +168,7 @@ public final class PlaybackService extends Service implements Handler.Callback,
 		mMediaPlayer.setOnErrorListener(this);
 
 		mNotificationManager = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
+		mAudioManager = (AudioManager)getSystemService(AUDIO_SERVICE);
 
 		SharedPreferences settings = getSettings();
 		settings.registerOnSharedPreferenceChangeListener(this);
@@ -175,6 +181,7 @@ public final class PlaybackService extends Service implements Handler.Callback,
 		}
 		mIdleTimeout = settings.getBoolean("use_idle_timeout", false) ? settings.getInt("idle_timeout", 3600) : 0;
 		Song.mDisableCoverArt = settings.getBoolean("disable_cover_art", false);
+		mHeadsetOnly = settings.getBoolean("headset_only", false);
 
 		PowerManager powerManager = (PowerManager)getSystemService(POWER_SERVICE);
 		mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "VanillaMusicLock");
@@ -321,6 +328,10 @@ public final class PlaybackService extends Service implements Handler.Callback,
 			PlaybackActivity.mUpAction = Integer.parseInt(settings.getString(key, "0"));
 		} else if ("swipe_down_action".equals(key)) {
 			PlaybackActivity.mDownAction = Integer.parseInt(settings.getString(key, "0"));
+		} else if ("headset_only".equals(key)) {
+			mHeadsetOnly = settings.getBoolean(key, false);
+			if (mHeadsetOnly && isSpeakerOn())
+				unsetFlag(FLAG_PLAYING);
 		}
 	}
 
@@ -346,6 +357,14 @@ public final class PlaybackService extends Service implements Handler.Callback,
 		}
 	}
 
+	/**
+	 * Return true if audio would play through the speaker.
+	 */
+	private boolean isSpeakerOn()
+	{
+		return !mAudioManager.isWiredHeadsetOn() && !mAudioManager.isBluetoothA2dpOn() && !mAudioManager.isBluetoothScoOn();
+	}
+
 	/**
 	 * Modify the service state.
 	 *
@@ -354,7 +373,7 @@ public final class PlaybackService extends Service implements Handler.Callback,
 	 */
 	private int updateState(int state)
 	{
-		if ((state & FLAG_NO_MEDIA) != 0 || (state & FLAG_ERROR) != 0)
+		if ((state & FLAG_NO_MEDIA) != 0 || (state & FLAG_ERROR) != 0 || (mHeadsetOnly && isSpeakerOn()))
 			state &= ~FLAG_PLAYING;
 
 		int oldState = mState;