Don't play notifications during speech recognition

Add support for querying AudioManager to know whether speech
 recognition is currently underway.

Don't play a notification if speech recognition is underway.

Bug 7314859

Change-Id: I1bd013a3168cfe1a6b6dcfd28565e1c3c512eb6a

2 files changed, 17 insertions, 0 deletions

diff --git a/media/java/android/media/AudioManager.java b/media/java/android/media/AudioManager.java
index ee17bd3..035b282 100644
--- a/media/java/android/media/AudioManager.java
+++ b/media/java/android/media/AudioManager.java
@@ -1526,6 +1526,16 @@ public class AudioManager {
 
     /**
      * @hide
+     * Checks whether speech recognition is active
+     * @return true if a recording with source {@link MediaRecorder.AudioSource#VOICE_RECOGNITION}
+     *    is underway.
+     */
+    public boolean isSpeechRecognitionActive() {
+        return AudioSystem.isSourceActive(MediaRecorder.AudioSource.VOICE_RECOGNITION);
+    }
+
+    /**
+     * @hide
      * If the stream is active locally or remotely, adjust its volume according to the enforced
      * priority rules.
      * Note: only AudioManager.STREAM_MUSIC is supported at the moment
diff --git a/media/java/android/media/AudioSystem.java b/media/java/android/media/AudioSystem.java
index 103e817..260ddc7 100644
--- a/media/java/android/media/AudioSystem.java
+++ b/media/java/android/media/AudioSystem.java
@@ -111,6 +111,13 @@ public class AudioSystem
     public static native boolean isStreamActive(int stream, int inPastMs);
 
     /*
+     * Checks whether the specified audio source is active.
+     *
+     * return true if any recorder using this source is currently recording
+     */
+    public static native boolean isSourceActive(int source);
+
+    /*
      * Sets a group generic audio configuration parameters. The use of these parameters
      * are platform dependent, see libaudio
      *