Configuration for lock and UI sound levels

Define two integers in the platform configuration to
 define the sound level for lock/unlock sounds, and
 UI sound effects.
Use the corresponding value in KeyguardViewMediator for the lock sounds.
Use the corresponding value in AudioService when playing sound effects.

Bug 6448481

Change-Id: Ie238f5eb1645e395412864d93447ac4049f7e54b

Author: jmtrivi

core/res/res/values/config.xml

@@ -76,6 +76,13 @@
         <item>0</item>  <item>5</item>  <!-- default: always increase volume by 5% -->
     </integer-array>
 
+    <!-- The attenuation in dB applied to the sound effects played
+         through AudioManager.playSoundEffect() when no volume is specified. -->
+    <integer name="config_soundEffectVolumeDb">-6</integer>
+
+    <!-- The attenuation in dB applied to the lock/unlock sounds. -->
+    <integer name="config_lockSoundVolumeDb">-6</integer>
+
     <!-- Flag indicating whether the AUDIO_BECOMING_NOISY notification should
          be sent during a change to the audio output device. -->
     <bool name="config_sendAudioBecomingNoisy">true</bool>

core/res/res/values/public.xml

@@ -276,6 +276,8 @@
   <java-symbol type="integer" name="db_wal_autocheckpoint" />
   <java-symbol type="integer" name="max_action_buttons" />
   <java-symbol type="integer" name="config_wifi_driver_stop_delay" />
+  <java-symbol type="integer" name="config_soundEffectVolumeDb" />
+  <java-symbol type="integer" name="config_lockSoundVolumeDb" />
 
   <java-symbol type="color" name="tab_indicator_text_v4" />
 

media/java/android/media/AudioService.java

@@ -165,7 +165,6 @@ public class AudioService extends IAudioService.Stub implements OnFinished {
     private SoundPool mSoundPool;
     private final Object mSoundEffectsLock = new Object();
     private static final int NUM_SOUNDPOOL_CHANNELS = 4;
-    private static final int SOUND_EFFECT_VOLUME = 1000;
 
     // Internally master volume is a float in the 0.0 - 1.0 range,
     // but to support integer based AudioManager API we translate it to 0 - 100
@@ -370,10 +369,8 @@ public void onError(int error) {
     private SoundPoolListenerThread mSoundPoolListenerThread;
     // message looper for SoundPool listener
     private Looper mSoundPoolLooper = null;
-    // default volume applied to sound played with playSoundEffect()
-    private static final int SOUND_EFFECT_DEFAULT_VOLUME_DB = 0;
-    // volume applied to sound played with playSoundEffect() read from ro.config.sound_fx_volume
-    private int SOUND_EFFECT_VOLUME_DB;
+    // volume applied to sound played with playSoundEffect()
+    private static int SOUND_EFFECT_VOLUME_DB;
     // getActiveStreamType() will return STREAM_NOTIFICATION during this period after a notification
     // stopped
     private static final int NOTIFICATION_VOLUME_DELAY_MS = 5000;
@@ -420,9 +417,8 @@ public AudioService(Context context) {
             "ro.config.vc_call_vol_steps",
            MAX_STREAM_VOLUME[AudioSystem.STREAM_VOICE_CALL]);
 
-        SOUND_EFFECT_VOLUME_DB = SystemProperties.getInt(
-                "ro.config.sound_fx_volume",
-                SOUND_EFFECT_DEFAULT_VOLUME_DB);
+        SOUND_EFFECT_VOLUME_DB = context.getResources().getInteger(
+                com.android.internal.R.integer.config_soundEffectVolumeDb);
 
         mVolumePanel = new VolumePanel(context, this);
         mMode = AudioSystem.MODE_NORMAL;

policy/src/com/android/internal/policy/impl/KeyguardViewMediator.java

@@ -251,7 +251,11 @@ public class KeyguardViewMediator implements KeyguardViewCallback,
     private int mLockSoundId;
     private int mUnlockSoundId;
     private int mLockSoundStreamId;
-    private int mMasterStreamMaxVolume;
+
+    /**
+     * The volume applied to the lock/unlock sounds.
+     */
+    private final float mLockSoundVolume;
 
     InfoCallbackImpl mInfoCallback = new InfoCallbackImpl() {
 
@@ -329,6 +333,9 @@ public KeyguardViewMediator(Context context, PhoneWindowManager callback,
         if (soundPath == null || mUnlockSoundId == 0) {
             if (DEBUG) Log.d(TAG, "failed to load sound from " + soundPath);
         }
+        int lockSoundDefaultAttenuation = context.getResources().getInteger(
+                com.android.internal.R.integer.config_lockSoundVolumeDb);
+        mLockSoundVolume = (float)Math.pow(10, lockSoundDefaultAttenuation/20);
         IntentFilter userFilter = new IntentFilter();
         userFilter.addAction(Intent.ACTION_USER_SWITCHED);
         userFilter.addAction(Intent.ACTION_USER_REMOVED);
@@ -1117,7 +1124,8 @@ private void playSounds(boolean locked) {
             // If the stream is muted, don't play the sound
             if (mAudioManager.isStreamMute(mMasterStreamType)) return;
 
-            mLockSoundStreamId = mLockSounds.play(whichSound, 1.0f, 1.0f, 1, 0, 1.0f);
+            mLockSoundStreamId = mLockSounds.play(whichSound,
+                    mLockSoundVolume, mLockSoundVolume, 1/*priortiy*/, 0/*loop*/, 1.0f/*rate*/);
         }
     }