Added channel property to allow audio panning

Video.js

@@ -277,6 +277,7 @@ Video.propTypes = {
   paused: PropTypes.bool,
   muted: PropTypes.bool,
   volume: PropTypes.number,
+  channel: PropTypes.string,
   rate: PropTypes.number,
   playInBackground: PropTypes.bool,
   playWhenInactive: PropTypes.bool,

android-exoplayer/src/main/java/com/brentvatne/exoplayer/ReactExoplayerView.java

@@ -650,6 +650,12 @@ class ReactExoplayerView extends FrameLayout implements
         }
     }
 
+    public void setChannel(String channel) {
+        if (player != null) {
+            player.setChannel(channel);
+        }
+    }
+
     public void seekTo(long positionMs) {
         if (player != null) {
             eventEmitter.seek(player.getCurrentPosition(), positionMs);

android-exoplayer/src/main/java/com/brentvatne/exoplayer/ReactExoplayerViewManager.java

@@ -27,6 +27,7 @@ public class ReactExoplayerViewManager extends ViewGroupManager<ReactExoplayerVi
     private static final String PROP_PAUSED = "paused";
     private static final String PROP_MUTED = "muted";
     private static final String PROP_VOLUME = "volume";
+    private static final String PROP_CHANNEL = "channel";
     private static final String PROP_PROGRESS_UPDATE_INTERVAL = "progressUpdateInterval";
     private static final String PROP_SEEK = "seek";
     private static final String PROP_RATE = "rate";
@@ -131,6 +132,11 @@ public class ReactExoplayerViewManager extends ViewGroupManager<ReactExoplayerVi
         videoView.setVolumeModifier(volume);
     }
 
+    @ReactProp(name = PROP_CHANNEL)
+    public void setChannel(final ReactExoplayerView videoView, final String channel) {
+        videoView.setChannel(channel);
+    }
+
     @ReactProp(name = PROP_PROGRESS_UPDATE_INTERVAL, defaultFloat = 250.0f)
     public void setProgressUpdateInterval(final ReactExoplayerView videoView, final float progressUpdateInterval) {
         videoView.setProgressUpdateInterval(progressUpdateInterval);

android/src/main/java/com/brentvatne/react/ReactVideoView.java

@@ -77,6 +77,10 @@ public class ReactVideoView extends ScalableVideoView implements MediaPlayer.OnP
     public static final String EVENT_PROP_WHAT = "what";
     public static final String EVENT_PROP_EXTRA = "extra";
 
+    public static final String CHANNEL_LEFT = "left";
+    public static final String CHANNEL_BOTH = "both";
+    public static final String CHANNEL_RIGHT = "right";
+
     private ThemedReactContext mThemedReactContext;
     private RCTEventEmitter mEventEmitter;
 
@@ -95,6 +99,7 @@ public class ReactVideoView extends ScalableVideoView implements MediaPlayer.OnP
     private boolean mPaused = false;
     private boolean mMuted = false;
     private float mVolume = 1.0f;
+    private String mChannel = CHANNEL_BOTH;
     private float mProgressUpdateInterval = 250.0f;
     private float mRate = 1.0f;
     private float mActiveRate = 1.0f;
@@ -368,6 +373,10 @@ public class ReactVideoView extends ScalableVideoView implements MediaPlayer.OnP
 
         if (mMuted) {
             setVolume(0, 0);
+        } else if (CHANNEL_LEFT.equals(mChannel)){
+            setVolume(mVolume, 0);
+        } else if (CHANNEL_RIGHT.equals(mChannel)){
+            setVolume(0, mVolume);
         } else {
             setVolume(mVolume, mVolume);
         }
@@ -378,6 +387,11 @@ public class ReactVideoView extends ScalableVideoView implements MediaPlayer.OnP
         setMutedModifier(mMuted);
     }
 
+    public void setChannel(final String channel) {
+        mChannel = channel;
+        setMutedModifier(mMuted);
+    }
+
     public void setProgressUpdateInterval(final float progressUpdateInterval) {
         mProgressUpdateInterval = progressUpdateInterval;
     }

android/src/main/java/com/brentvatne/react/ReactVideoViewManager.java

@@ -30,6 +30,7 @@ public class ReactVideoViewManager extends SimpleViewManager<ReactVideoView> {
     public static final String PROP_PAUSED = "paused";
     public static final String PROP_MUTED = "muted";
     public static final String PROP_VOLUME = "volume";
+    public static final String PROP_CHANNEL = "channel";
     public static final String PROP_PROGRESS_UPDATE_INTERVAL = "progressUpdateInterval";
     public static final String PROP_SEEK = "seek";
     public static final String PROP_RATE = "rate";
@@ -124,6 +125,11 @@ public class ReactVideoViewManager extends SimpleViewManager<ReactVideoView> {
         videoView.setVolumeModifier(volume);
     }
 
+    @ReactProp(name = PROP_CHANNEL)
+    public void setChannel(final ReactVideoView videoView, final String channel) {
+        videoView.setChannel(channel);
+    }
+
     @ReactProp(name = PROP_PROGRESS_UPDATE_INTERVAL, defaultFloat = 250.0f)
     public void setProgressUpdateInterval(final ReactVideoView videoView, final float progressUpdateInterval) {
         videoView.setProgressUpdateInterval(progressUpdateInterval);