Telephony.patch

commit e493cd583069652483ad63e7c86234dedfc9d6f7
Author: h3llrais3r <pooh_beer_1@hotmail.com>
Date:   Wed Mar 19 21:53:08 2014 +0100

    Ported my low-incall volume fix from CM-10.2 to CM-11.0

diff --git a/src/com/android/phone/AudioRouter.java b/src/com/android/phone/AudioRouter.java
index 3c8e9d3..de13889 100644
--- a/src/com/android/phone/AudioRouter.java
+++ b/src/com/android/phone/AudioRouter.java
@@ -179,7 +179,12 @@ import java.util.List;
 
     public void onMuteChange(boolean muted) {
         logD("onMuteChange: " + muted);
+
         notifyListeners();
+
+        // Fix for low in-call volume bug
+        // Reset the audio volume stream after mute change
+        PhoneUtils.resetAudioStreamVolume();
     }
 
     /**
@@ -350,6 +355,10 @@ import java.util.List;
         if (doNotify) {
             notifyListeners();
         }
+
+        // Fix for low in-call volume bug
+        // Reset the audio volume stream after switching audio mode
+        PhoneUtils.resetAudioStreamVolume();
     }
 
     /**
diff --git a/src/com/android/phone/PhoneUtils.java b/src/com/android/phone/PhoneUtils.java
index 2d44977..7df15e9 100644
--- a/src/com/android/phone/PhoneUtils.java
+++ b/src/com/android/phone/PhoneUtils.java
@@ -2027,6 +2027,38 @@ public class PhoneUtils {
             }
         }
     }
+
+    /**
+     * Reset the audio stream volume to fix the low in-call volume bug.
+     *
+     * Due to a bug in the OMX system, the audio stream volume is set to 0 after it was set to it's default volume.
+     * Calling PhoneUtils.resetAudioStreamVolume() triggers the system to reset the volume.
+     *
+     * This should be called on every place where is switched between audio modes.
+     *
+     * REMARK: I think it only appears on the voice call stream, but to be sure I also do it on the bluetooth stream.
+     */
+    static void resetAudioStreamVolume() {
+        PhoneGlobals app = PhoneGlobals.getInstance();
+        BluetoothManager btManager = app.getBluetoothManager();
+        AudioManager audioManager = (AudioManager) app.getSystemService(Context.AUDIO_SERVICE);
+        // determine actual streamType
+        int streamType = AudioManager.STREAM_VOICE_CALL;
+        if (btManager.isBluetoothHeadsetAudioOn()) {
+            streamType = AudioManager.STREAM_BLUETOOTH_SCO;
+        }
+        // determine volume and 1 level lower volume (lowest level can be 0)
+        int volume = audioManager.getStreamVolume(streamType);
+        int lowerVolume = volume - 1;
+        if (lowerVolume < 0) {
+            lowerVolume = 0;
+        }
+        log("resetAudioStreamVolume (streamType=" + streamType + ", streamVolume=" + volume + ")...");
+        // It's important to change it to another volume before restoring the original volume,
+        // otherwise the volume change will NOT be triggered!!
+        audioManager.setStreamVolume(streamType, lowerVolume, 0);
+        audioManager.setStreamVolume(streamType, volume, 0);
+    }
 
     static boolean isInEmergencyCall(CallManager cm) {
         for (Connection cn : cm.getActiveFgCall().getConnections()) {