From 0d9609f198f3d2b1b42d766fd527d890f64dfaa7 Mon Sep 17 00:00:00 2001
From: sonora <hm.gglmail@gmail.com>
Date: Sat, 2 Jul 2016 19:09:16 +0200
Subject: [PATCH] Activate BT SCO only for STREAM_VOICE_CALL as per Android
 documentation

---
 OsmAnd/res/values/strings.xml                 |  4 ++--
 .../voice/AbstractPrologCommandPlayer.java    | 22 +++++++++----------
 2 files changed, 12 insertions(+), 14 deletions(-)

diff --git a/OsmAnd/res/values/strings.xml b/OsmAnd/res/values/strings.xml
index 10e5292ed7..92ca64a938 100644
--- a/OsmAnd/res/values/strings.xml
+++ b/OsmAnd/res/values/strings.xml
@@ -1226,7 +1226,7 @@
     <string name="auto_zoom_map">Auto zoom map</string>
     <string name="snap_to_road_descr">Snap position to roads during navigation</string>
     <string name="snap_to_road">Snap to road</string>
-    <string name="interrupt_music_descr">Interrupt music when making announcement (also as simulated phone calls to car BT stereos)</string>
+    <string name="interrupt_music_descr">Interrupt music when making announcement</string>
     <string name="interrupt_music">Interrupt music</string>
     <string name="osmand_play_title_30_chars">OsmAnd Maps &amp; Navigation</string>
     <string name="osmand_short_description_80_chars">Global Mobile Map Viewing &amp; Navigation for Offline and Online OSM Maps</string>
@@ -1817,7 +1817,7 @@ If you need help with OsmAnd application, please contact our support team: suppo
     <string name="switch_to_vector_map_to_see">Offline vector map present for this location. \n\t\n\tTo use activate \'Menu\' → \'Configure map\' → \'Map Source…\' → \'Offline vector maps\'.</string>
     <string name="choose_audio_stream">Voice guidance output</string>
     <string name="choose_audio_stream_descr">Choose speaker to play voice guidance (system-dependent)</string>
-    <string name="voice_stream_voice_call">Phone call audio</string>
+    <string name="voice_stream_voice_call">Phone call audio (also tries to interrupt car BT stereos)</string>
     <string name="voice_stream_notification">Notification audio</string>
     <string name="voice_stream_music">Media/music audio</string>
     <string name="warning_tile_layer_not_downloadable">Application cannot download map layer %1$s, please try to reinstall it.</string>
diff --git a/OsmAnd/src/net/osmand/plus/voice/AbstractPrologCommandPlayer.java b/OsmAnd/src/net/osmand/plus/voice/AbstractPrologCommandPlayer.java
index ecdf676a68..1ca00a5096 100644
--- a/OsmAnd/src/net/osmand/plus/voice/AbstractPrologCommandPlayer.java
+++ b/OsmAnd/src/net/osmand/plus/voice/AbstractPrologCommandPlayer.java
@@ -281,12 +281,10 @@ public abstract class AbstractPrologCommandPlayer implements CommandPlayer, Stat
 		if (mAudioFocusHelper != null) {
 			mAudioFocusHelper.requestFocus(ctx, streamType);
 		}
-		if (ctx.getSettings().INTERRUPT_MUSIC.get()) {
+		// If AudioManager.STREAM_VOICE_CALL try using BT SCO:
+		if (ctx.getSettings().AUDIO_STREAM_GUIDANCE.get() == 0) {
 			// TODO: Delay the prompts a bit until connection is established
-				startBtSco(ctx);
-			//if (btScoStatus == false) {
-			//	Toast.makeText(this, R.string."BT connection error: ", Toast.LENGTH_SHORT).show();
-			//}
+			startBtSco();
 		}
 	}
 
@@ -301,8 +299,8 @@ public abstract class AbstractPrologCommandPlayer implements CommandPlayer, Stat
 	
 	protected void abandonAudioFocus() {
 		log.debug("abandonAudioFocus");
-		if (ctx.getSettings().INTERRUPT_MUSIC.get() || (btScoStatus == true)) {
-			stopBtSco(ctx);
+		if ((ctx.getSettings().AUDIO_STREAM_GUIDANCE.get() == 0) || (btScoStatus == true)) {
+			stopBtSco();
 		}
 		if (mAudioFocusHelper != null) {
 			mAudioFocusHelper.abandonFocus(ctx, streamType);
@@ -312,12 +310,12 @@ public abstract class AbstractPrologCommandPlayer implements CommandPlayer, Stat
 
 	private static boolean btScoStatus = false;
 
-	private boolean startBtSco(Context context) {
+	private boolean startBtSco() {
 	// Establish a low quality Synchronous Connection-Oriented link to BT to e.g. interrupt a car stereo
 	// http://stackoverflow.com/questions/2144694/routing-audio-to-bluetooth-headset-non-a2dp-on-android
 		try {
-			AudioManager mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
-			if (mAudioManager == null) {
+			AudioManager mAudioManager = (AudioManager) ctx.getSystemService(Context.AUDIO_SERVICE);
+			if (mAudioManager == null || !mAudioManager.isBluetoothScoAvailableOffCall()) {
 				return false;
 			}
 			mAudioManager.setMode(0);
@@ -333,9 +331,9 @@ public abstract class AbstractPrologCommandPlayer implements CommandPlayer, Stat
 		return btScoStatus;
 	}
 
-	private boolean stopBtSco(Context context) {
+	private boolean stopBtSco() {
 		btScoStatus = false;
-		AudioManager mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
+		AudioManager mAudioManager = (AudioManager) ctx.getSystemService(Context.AUDIO_SERVICE);
 		if (mAudioManager == null) {
 			return false;
 		}