Merge pull request #1325 from Khan/pip

Implement picture in picture for iOS

ios/Video/RCTVideo.m

@@ -27,6 +27,8 @@ static int const RCTVideoUnset = -1;
   AVPlayer *_player;
   AVPlayerItem *_playerItem;
   NSDictionary *_source;
+  AVPictureInPictureController *_pipController;
+  void (^__strong _Nonnull _restoreUserInterfaceForPIPStopCompletionHandler)(BOOL);
   BOOL _playerItemObserversSet;
   BOOL _playerBufferEmpty;
   AVPlayerLayer *_playerLayer;
@@ -64,6 +66,7 @@ static int const RCTVideoUnset = -1;
   BOOL _playbackStalled;
   BOOL _playInBackground;
   BOOL _playWhenInactive;
+  BOOL _pictureInPicture;
   NSString * _ignoreSilentSwitch;
   NSString * _resizeMode;
   BOOL _fullscreen;
@@ -100,7 +103,9 @@ static int const RCTVideoUnset = -1;
     _playInBackground = false;
     _allowsExternalPlayback = YES;
     _playWhenInactive = false;
+	_pictureInPicture = false;
     _ignoreSilentSwitch = @"inherit"; // inherit, ignore, obey
+	_restoreUserInterfaceForPIPStopCompletionHandler = NULL;
 #if __has_include(<react-native-video/RCTVideoCache.h>)
     _videoCache = [RCTVideoCache sharedInstance];
 #endif
@@ -786,6 +791,40 @@ static int const RCTVideoUnset = -1;
   _playWhenInactive = playWhenInactive;
 }
 
+- (void)setPictureInPicture:(BOOL)pictureInPicture
+{
+  if (_pictureInPicture == pictureInPicture) {
+    return;
+  }
+
+  _pictureInPicture = pictureInPicture;
+  if (_pipController && _pictureInPicture && ![_pipController isPictureInPictureActive]) {
+    dispatch_async(dispatch_get_main_queue(), ^{
+      [_pipController startPictureInPicture];
+    });
+  } else if (_pipController && !_pictureInPicture && [_pipController isPictureInPictureActive]) {
+    dispatch_async(dispatch_get_main_queue(), ^{
+      [_pipController stopPictureInPicture];
+	});
+  }
+}
+
+- (void)setRestoreUserInterfaceForPIPStopCompletionHandler:(BOOL)restore
+{
+  if (_restoreUserInterfaceForPIPStopCompletionHandler != NULL) {
+    _restoreUserInterfaceForPIPStopCompletionHandler(restore);
+    _restoreUserInterfaceForPIPStopCompletionHandler = NULL;
+  }
+}
+
+- (void)setupPipController {
+  if (!_pipController && _playerLayer && [AVPictureInPictureController isPictureInPictureSupported]) {
+    // Create new controller passing reference to the AVPlayerLayer
+    _pipController = [[AVPictureInPictureController alloc] initWithPlayerLayer:_playerLayer];
+    _pipController.delegate = self;
+  }
+}
+
 - (void)setIgnoreSilentSwitch:(NSString *)ignoreSilentSwitch
 {
   _ignoreSilentSwitch = ignoreSilentSwitch;
@@ -1240,6 +1279,8 @@ static int const RCTVideoUnset = -1;
     
     [self.layer addSublayer:_playerLayer];
     self.layer.needsDisplayOnBoundsChange = YES;
+
+    [self setupPipController];
   }
 }
 
@@ -1496,4 +1537,42 @@ static int const RCTVideoUnset = -1;
     return array[0];
 }
 
+#pragma mark - Picture in Picture
+
+- (void)pictureInPictureControllerDidStopPictureInPicture:(AVPictureInPictureController *)pictureInPictureController {
+  if (self.onPictureInPictureStatusChanged) {
+    self.onPictureInPictureStatusChanged(@{
+										   @"isActive": [NSNumber numberWithBool:false]
+										   });
+  }
+}
+
+- (void)pictureInPictureControllerDidStartPictureInPicture:(AVPictureInPictureController *)pictureInPictureController {
+  if (self.onPictureInPictureStatusChanged) {
+    self.onPictureInPictureStatusChanged(@{
+										   @"isActive": [NSNumber numberWithBool:true]
+										   });
+  }
+}
+
+- (void)pictureInPictureControllerWillStopPictureInPicture:(AVPictureInPictureController *)pictureInPictureController {
+
+}
+
+- (void)pictureInPictureControllerWillStartPictureInPicture:(AVPictureInPictureController *)pictureInPictureController {
+
+}
+
+- (void)pictureInPictureController:(AVPictureInPictureController *)pictureInPictureController failedToStartPictureInPictureWithError:(NSError *)error {
+
+}
+
+- (void)pictureInPictureController:(AVPictureInPictureController *)pictureInPictureController restoreUserInterfaceForPictureInPictureStopWithCompletionHandler:(void (^)(BOOL))completionHandler {
+  NSAssert(_restoreUserInterfaceForPIPStopCompletionHandler == NULL, @"restoreUserInterfaceForPIPStopCompletionHandler was not called after picture in picture was exited.");
+  if (self.onRestoreUserInterfaceForPictureInPictureStop) {
+    self.onRestoreUserInterfaceForPictureInPictureStop(@{});
+  }
+  _restoreUserInterfaceForPIPStopCompletionHandler = completionHandler;
+}
+
 @end