[Android] [PATCH 3/5] Video: add volume control from keyboard

[Alexandre Perraud]

    and directly handle device volume buttons
---
 .../vlc/gui/video/VideoPlayerActivity.java         | 30 +++++++++++++++++++---
 1 file changed, 26 insertions(+), 4 deletions(-)

diff --git a/vlc-android/src/org/videolan/vlc/gui/video/VideoPlayerActivity.java b/vlc-android/src/org/videolan/vlc/gui/video/VideoPlayerActivity.java
index 4ff2fa2..fced15d 100644
--- a/vlc-android/src/org/videolan/vlc/gui/video/VideoPlayerActivity.java
+++ b/vlc-android/src/org/videolan/vlc/gui/video/VideoPlayerActivity.java
@@ -208,6 +208,9 @@ public class VideoPlayerActivity extends Activity implements IVideoPlayer {
     private OnAudioFocusChangeListener mAudioFocusListener;
     private boolean mMute = false;
     private int mVol, mVolSave;
+    private int mVolDelta = 0;
+    private static final int VOLUME_UP = 1;
+    private static final int VOLUME_DOWN = -1;
 
     //Touch Events
     private static final int TOUCH_NONE = 0;
@@ -405,6 +408,7 @@ public class VideoPlayerActivity extends Activity implements IVideoPlayer {
         em.addHandler(eventHandler);
 
         this.setVolumeControlStream(AudioManager.STREAM_MUSIC);
+        mVol = mAudioManager.getStreamVolume(AudioManager.STREAM_MUSIC);
 
         // Extra initialization when no secondary display is detected
         if (mPresentation == null) {
@@ -703,6 +707,12 @@ public class VideoPlayerActivity extends Activity implements IVideoPlayer {
         case KeyEvent.KEYCODE_VOLUME_MUTE:
             updateMute();
             return true;
+        case KeyEvent.KEYCODE_VOLUME_DOWN:
+            updateVolume(VOLUME_DOWN);
+            return true;
+        case KeyEvent.KEYCODE_VOLUME_UP:
+            updateVolume(VOLUME_UP);
+            return true;
         case KeyEvent.KEYCODE_S:
         case KeyEvent.KEYCODE_MEDIA_STOP:
             finish();
@@ -1337,14 +1347,26 @@ public class VideoPlayerActivity extends Activity implements IVideoPlayer {
         if (mTouchAction != TOUCH_NONE && mTouchAction != TOUCH_VOLUME)
             return;
         int delta = -(int) ((y_changed / mSurfaceYDisplayRange) * mAudioMax);
-        int vol = (int) Math.min(Math.max(mVol + delta, 0), mAudioMax);
-        if (delta != 0) {
-            mAudioManager.setStreamVolume(AudioManager.STREAM_MUSIC, vol, 0);
+        if (delta != 0 && mVolDelta != delta) {
+            if (delta > mVolDelta)
+                updateVolume(VOLUME_UP);
+            else
+                updateVolume(VOLUME_DOWN);
+            mVolDelta = delta;
             mTouchAction = TOUCH_VOLUME;
-            showInfo(getString(R.string.volume) + '\u00A0' + Integer.toString(vol),1000);
         }
     }
 
+    private void updateVolume (int delta) {
+        if (mMute) {
+            showInfo("Mute",1000);
+            return;
+        };
+        mVol = (int) Math.min(Math.max(mVol + delta, 0), mAudioMax);
+        mAudioManager.setStreamVolume(AudioManager.STREAM_MUSIC, mVol, 0);
+        showInfo(getString(R.string.volume) + '\u00A0' + Integer.toString(mVol),1000);
+    }
+
     private void updateMute () {
         if (!mMute) {
             mVolSave = mVol;
-- 
1.9.1