Added Torch support in android

Author: marqroldan

android/src/main/java/com/twiliorn/library/CustomTwilioVideoView.java

@@ -16,6 +16,7 @@
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
+import android.hardware.Camera;
 import android.media.AudioAttributes;
 import android.media.AudioFocusRequest;
 import android.media.AudioManager;
@@ -37,6 +38,7 @@
 import com.twilio.video.AudioTrackPublication;
 import com.twilio.video.BaseTrackStats;
 import com.twilio.video.CameraCapturer;
+import com.twilio.video.CameraParameterUpdater;
 import com.twilio.video.ConnectOptions;
 import com.twilio.video.LocalAudioTrack;
 import com.twilio.video.LocalAudioTrackPublication;
@@ -81,6 +83,7 @@
 
 import static com.twiliorn.library.CustomTwilioVideoView.Events.ON_AUDIO_CHANGED;
 import static com.twiliorn.library.CustomTwilioVideoView.Events.ON_CAMERA_SWITCHED;
+import static com.twiliorn.library.CustomTwilioVideoView.Events.ON_CAMERA_FLASH_TOGGLED;
 import static com.twiliorn.library.CustomTwilioVideoView.Events.ON_CONNECTED;
 import static com.twiliorn.library.CustomTwilioVideoView.Events.ON_CONNECT_FAILURE;
 import static com.twiliorn.library.CustomTwilioVideoView.Events.ON_DISCONNECTED;
@@ -132,7 +135,8 @@ public class CustomTwilioVideoView extends View implements LifecycleEventListene
             Events.ON_PARTICIPANT_DISABLED_AUDIO_TRACK,
             Events.ON_STATS_RECEIVED,
             Events.ON_NETWORK_QUALITY_LEVELS_CHANGED,
-            Events.ON_DOMINANT_SPEAKER_CHANGED
+            Events.ON_DOMINANT_SPEAKER_CHANGED,
+            Events.ON_CAMERA_FLASH_TOGGLED
     })
     public @interface Events {
         String ON_CAMERA_SWITCHED = "onCameraSwitched";
@@ -157,6 +161,7 @@ public class CustomTwilioVideoView extends View implements LifecycleEventListene
         String ON_STATS_RECEIVED = "onStatsReceived";
         String ON_NETWORK_QUALITY_LEVELS_CHANGED = "onNetworkQualityLevelsChanged";
         String ON_DOMINANT_SPEAKER_CHANGED = "onDominantSpeakerDidChange";
+        String ON_CAMERA_FLASH_TOGGLED = "onCameraFlashToggled";
     }
 
     private final ThemedReactContext themedReactContext;
@@ -565,6 +570,32 @@ public void switchCamera() {
         }
     }
 
+    private final CameraParameterUpdater flashToggler = parameters -> {
+        if (parameters.getFlashMode() != null) {
+            String flashMode = Camera.Parameters.FLASH_MODE_OFF.equals(parameters.getFlashMode()) ?
+                    Camera.Parameters.FLASH_MODE_TORCH :
+                    Camera.Parameters.FLASH_MODE_OFF;
+            parameters.setFlashMode(flashMode);
+            WritableMap event = new WritableNativeMap();
+            event.putBoolean("isFlashOn", flashMode == Camera.Parameters.FLASH_MODE_TORCH);
+            pushEvent(CustomTwilioVideoView.this, ON_CAMERA_FLASH_TOGGLED, event);
+        } else {
+            WritableMap event = new WritableNativeMap();
+            event.putString("error", "Flash is not supported in current camera mode");
+            pushEvent(CustomTwilioVideoView.this, ON_CAMERA_FLASH_TOGGLED, event);
+        }
+    };
+
+    public void toggleFlash() {
+        if (cameraCapturer != null) {
+            cameraCapturer.updateCameraParameters(flashToggler);
+        } else {
+            WritableMap event = new WritableNativeMap();
+            event.putString("error", "There's no camera available");
+            pushEvent(CustomTwilioVideoView.this, ON_CAMERA_FLASH_TOGGLED, event);
+        }
+    }
+
     public void toggleVideo(boolean enabled) {
       isVideoEnabled = enabled;
         if (localVideoTrack != null) {

android/src/main/java/com/twiliorn/library/CustomTwilioVideoViewManager.java

@@ -20,6 +20,7 @@
 
 import static com.twiliorn.library.CustomTwilioVideoView.Events.ON_AUDIO_CHANGED;
 import static com.twiliorn.library.CustomTwilioVideoView.Events.ON_CAMERA_SWITCHED;
+import static com.twiliorn.library.CustomTwilioVideoView.Events.ON_CAMERA_FLASH_TOGGLED;
 import static com.twiliorn.library.CustomTwilioVideoView.Events.ON_CONNECTED;
 import static com.twiliorn.library.CustomTwilioVideoView.Events.ON_CONNECT_FAILURE;
 import static com.twiliorn.library.CustomTwilioVideoView.Events.ON_DISCONNECTED;
@@ -59,6 +60,7 @@ public class CustomTwilioVideoViewManager extends SimpleViewManager<CustomTwilio
     private static final int SEND_STRING = 12;
     private static final int PUBLISH_VIDEO = 13;
     private static final int PUBLISH_AUDIO = 14;
+    private static final int TOGGLE_FLASH = 15;
 
     @Override
     public String getName() {
@@ -127,6 +129,9 @@ public void receiveCommand(CustomTwilioVideoView view, int commandId, @Nullable
             case PUBLISH_AUDIO:
                 view.publishLocalAudio(args.getBoolean(0));
                 break;
+            case TOGGLE_FLASH:
+                view.toggleFlash();
+                break;
         }
     }
 
@@ -143,6 +148,10 @@ public Map getExportedCustomDirectEventTypeConstants() {
                 ON_PARTICIPANT_CONNECTED, MapBuilder.of("registrationName", ON_PARTICIPANT_CONNECTED)
         );
 
+        map.putAll(MapBuilder.of(
+                ON_CAMERA_FLASH_TOGGLED, MapBuilder.of("registrationName", ON_CAMERA_FLASH_TOGGLED)
+        ));
+
         map.putAll(MapBuilder.of(
                 ON_PARTICIPANT_DISCONNECTED, MapBuilder.of("registrationName", ON_PARTICIPANT_DISCONNECTED),
                 ON_DATATRACK_MESSAGE_RECEIVED, MapBuilder.of("registrationName", ON_DATATRACK_MESSAGE_RECEIVED),
@@ -177,6 +186,7 @@ public Map<String, Integer> getCommandsMap() {
                 .put("connectToRoom", CONNECT_TO_ROOM)
                 .put("disconnect", DISCONNECT)
                 .put("switchCamera", SWITCH_CAMERA)
+                .put("toggleFlash", TOGGLE_FLASH)
                 .put("toggleVideo", TOGGLE_VIDEO)
                 .put("toggleSound", TOGGLE_SOUND)
                 .put("getStats", GET_STATS)

src/TwilioVideo.android.js

@@ -143,7 +143,12 @@ const propTypes = {
    * Called when dominant speaker changes
    * @param {{ participant, room }} dominant participant and room
    */
-  onDominantSpeakerDidChange: PropTypes.func
+  onDominantSpeakerDidChange: PropTypes.func,
+  /**
+   * Called when torch is done attempting to toggle
+   * @param {{ error, isFlashOn }}
+   */
+   onCameraFlashToggled: PropTypes.func,
 }
 
 const nativeEvents = {
@@ -160,7 +165,8 @@ const nativeEvents = {
   toggleBluetoothHeadset: 11,
   sendString: 12,
   publishVideo: 13,
-  publishAudio: 14
+  publishAudio: 14,
+  toggleFlash: 15
 }
 
 class CustomTwilioVideoView extends Component {
@@ -218,6 +224,10 @@ class CustomTwilioVideoView extends Component {
     this.runCommand(nativeEvents.switchCamera, [])
   }
 
+  toggleFlash() {
+    this.runCommand(nativeEvents.toggleFlash, []);
+  }
+
   setLocalVideoEnabled (enabled) {
     this.runCommand(nativeEvents.toggleVideo, [enabled])
     return Promise.resolve(enabled)
@@ -287,7 +297,8 @@ class CustomTwilioVideoView extends Component {
       'onParticipantDisabledAudioTrack',
       'onStatsReceived',
       'onNetworkQualityLevelsChanged',
-      'onDominantSpeakerDidChange'
+      'onDominantSpeakerDidChange',
+      'onCameraFlashToggled'
     ].reduce((wrappedEvents, eventName) => {
       if (this.props[eventName]) {
         return {