added video filter

Video.js

@@ -274,7 +274,10 @@ export default class Video extends Component {
   }
 }
 
+Video.filterTypes = ['Normal', 'Country', 'Winter', 'Black N White', 'Sunrise', 'Artistic'];
+
 Video.propTypes = {
+  filter: PropTypes.oneOf(Video.filterTypes),
   /* Native only */
   src: PropTypes.object,
   seek: PropTypes.oneOfType([

ios/Video/RCTVideo.m

@@ -13,6 +13,7 @@ static NSString *const readyForDisplayKeyPath = @"readyForDisplay";
 static NSString *const playbackRate = @"rate";
 static NSString *const timedMetadata = @"timedMetadata";
 static NSString *const externalPlaybackActive = @"externalPlaybackActive";
+static NSDictionary* filters = nil;
 
 static int const RCTVideoUnset = -1;
 
@@ -63,6 +64,7 @@ static int const RCTVideoUnset = -1;
   BOOL _playWhenInactive;
   NSString * _ignoreSilentSwitch;
   NSString * _resizeMode;
+  NSString * _filter;
   BOOL _fullscreen;
   NSString * _fullscreenOrientation;
   BOOL _fullscreenPlayerPresented;
@@ -75,6 +77,16 @@ static int const RCTVideoUnset = -1;
 - (instancetype)initWithEventDispatcher:(RCTEventDispatcher *)eventDispatcher
 {
   if ((self = [super init])) {
+
+    filters = @{
+            @"Normal": @"",
+            @"Country": @"CISepiaTone",
+            @"Winter": @"CIPhotoEffectProcess",
+            @"Black N White": @"CIPhotoEffectNoir",
+            @"Sunrise": @"CIPhotoEffectTransfer",
+            @"Artistic": @"CIColorPosterize",
+    };
+
     _eventDispatcher = eventDispatcher;
 
     _playbackRateObserverRegistered = NO;
@@ -861,6 +873,7 @@ static int const RCTVideoUnset = -1;
   [self setResizeMode:_resizeMode];
   [self setRepeat:_repeat];
   [self setPaused:_paused];
+  [self setFilter:_filter];
   [self setControls:_controls];
   [self setAllowsExternalPlayback:_allowsExternalPlayback];
 }
@@ -1151,6 +1164,43 @@ static int const RCTVideoUnset = -1;
   }
 }
 
+- (void)setFilter:(NSString *)filter {
+
+    _filter = filter;
+
+    AVAsset *asset = _playerItem.asset;
+
+    if (asset != nil) {
+
+        NSString *filterName = filters[filter];
+        CIFilter *filter = [CIFilter filterWithName:filterName];
+
+        _playerItem.videoComposition = [AVVideoComposition
+                videoCompositionWithAsset:asset
+             applyingCIFiltersWithHandler:^(AVAsynchronousCIImageFilteringRequest *_Nonnull request) {
+
+                 if (filter == nil) {
+
+                     [request finishWithImage:request.sourceImage context:nil];
+
+                 } else {
+
+                     CIImage *image = request.sourceImage.imageByClampingToExtent;
+
+                     [filter setValue:image forKey:kCIInputImageKey];
+
+                     CIImage *output = [filter.outputImage imageByCroppingToRect:request.sourceImage.extent];
+
+                     [request finishWithImage:output context:nil];
+
+                 }
+
+             }];
+
+    }
+
+}
+
 - (void)setFullscreenOrientation:(NSString *)orientation {
   _fullscreenOrientation = orientation;
   if (_fullscreenPlayerPresented) {

ios/Video/RCTVideoManager.m

@@ -38,6 +38,7 @@ RCT_EXPORT_VIEW_PROPERTY(seek, NSDictionary);
 RCT_EXPORT_VIEW_PROPERTY(currentTime, float);
 RCT_EXPORT_VIEW_PROPERTY(fullscreen, BOOL);
 RCT_EXPORT_VIEW_PROPERTY(fullscreenOrientation, NSString);
+RCT_EXPORT_VIEW_PROPERTY(filter, NSString);
 RCT_EXPORT_VIEW_PROPERTY(progressUpdateInterval, float);
 /* Should support: onLoadStart, onLoad, and onError to stay consistent with Image */
 RCT_EXPORT_VIEW_PROPERTY(onVideoLoadStart, RCTBubblingEventBlock);