Support for HLS maximum bit rate adaptive streaming

ios/Video/RCTVideo.m

@@ -51,6 +51,8 @@ static int const RCTVideoUnset = -1;
   /* Keep track of any modifiers, need to be applied after each play */
   float _volume;
   float _rate;
+  float _maximumBitRate;
+
   BOOL _muted;
   BOOL _paused;
   BOOL _repeat;
@@ -338,6 +340,8 @@ static int const RCTVideoUnset = -1;
       [self addPlayerItemObservers];
       [self setFilter:_filterName];
 
+      _playerItem.preferredPeakBitRate = _maximumBitRate;
+      
       [_player pause];
       [_playerViewController.view removeFromSuperview];
       _playerViewController = nil;
@@ -378,6 +382,11 @@ static int const RCTVideoUnset = -1;
   _videoLoadStarted = YES;
 }
 
+- (void)setMaximumBitRate:(float) maximumBitRate {
+  _maximumBitRate = maximumBitRate;
+  [self applyModifiers];
+}
+
 - (NSURL*) urlFilePath:(NSString*) filepath {
   if ([filepath containsString:@"file://"]) {
     return [NSURL URLWithString:filepath];

ios/Video/RCTVideoManager.m

@@ -19,6 +19,7 @@ RCT_EXPORT_MODULE();
 }
 
 RCT_EXPORT_VIEW_PROPERTY(src, NSDictionary);
+RCT_EXPORT_VIEW_PROPERTY(maximumBitRate, float);
 RCT_EXPORT_VIEW_PROPERTY(resizeMode, NSString);
 RCT_EXPORT_VIEW_PROPERTY(repeat, BOOL);
 RCT_EXPORT_VIEW_PROPERTY(allowsExternalPlayback, BOOL);