increase the bluetooth task priority when start a2dp.

change the BT task priority based on audio play state.
increase the BT task priority to ANDROID_PRIORITY_URGENT_AUDIO
,when start ad2p audio playing.
to better prevent CPU premption by other process/task(UI).
restore the BT task priority when stop a2dp audio playing.

bug:12082841
Change-Id: I34e8344cffea87f68987149c820cd3e84a4196d1

Conflicts:
	utils/include/bt_utils.h

diff --git a/utils/include/bt_utils.h b/utils/include/bt_utils.h
index ee21861..512e1b5 100644 (file)
--- a/utils/include/bt_utils.h
+++ b/utils/include/bt_utils.h
@@ -40,7 +40,5 @@ void bt_utils_init();
 void bt_utils_cleanup();
 void raise_priority_a2dp(tHIGH_PRIORITY_TASK high_task);
 void adjust_priority_a2dp(int start);
-
 #define UNUSED(x) (void)(x)
-
 #endif /* BT_UTILS_H */