Adding video play duration for camera roll

Reviewed By: zjj010104

Differential Revision: D5427454

fbshipit-source-id: 49b9fb2acf8f5093257780c927720776f3fae286

Libraries/CameraRoll/CameraRoll.js

@@ -88,6 +88,9 @@ const getPhotosReturnChecker = createStrictShapeTypeChecker({
           height: PropTypes.number.isRequired,
           width: PropTypes.number.isRequired,
           isStored: PropTypes.bool,
+          // TODO (nivethavadivelu) Need to add changes to Android before
+          // setting it as required
+          playableDuration: PropTypes.number,
         }).isRequired,
         timestamp: PropTypes.number.isRequired,
         location: createStrictShapeTypeChecker({

Libraries/CameraRoll/RCTCameraRollManager.m

@@ -187,6 +187,11 @@ static void RCTResolvePromise(RCTPromiseResolveBlock resolve,
           CLLocation *loc = [result valueForProperty:ALAssetPropertyLocation];
           NSDate *date = [result valueForProperty:ALAssetPropertyDate];
           NSString *filename = [result defaultRepresentation].filename;
+          int64_t duration = 0;
+          if ([[result valueForProperty:ALAssetPropertyType] isEqualToString:ALAssetTypeVideo]) {
+            duration = [[result valueForProperty:ALAssetPropertyDuration] intValue];
+          }
+
           [assets addObject:@{
             @"node": @{
               @"type": [result valueForProperty:ALAssetPropertyType],
@@ -197,6 +202,7 @@ static void RCTResolvePromise(RCTPromiseResolveBlock resolve,
                 @"height": @(dimensions.height),
                 @"width": @(dimensions.width),
                 @"isStored": @YES,
+                @"playableDuration": @(duration),
               },
               @"timestamp": @(date.timeIntervalSince1970),
               @"location": loc ? @{