Merge pull request #2934 from dreampiggy/bugfix_max_buffer_size

Fix the issue that `maxBufferSize` property does not correctlly works for `SDAnimatedImageView`

SDWebImage/Core/SDAnimatedImageView.m

@@ -19,6 +19,7 @@
 @interface SDAnimatedImageView () <CALayerDelegate> {
     BOOL _initFinished; // Extra flag to mark the `commonInit` is called
     NSRunLoopMode _runLoopMode;
+    NSUInteger _maxBufferSize;
     double _playbackRate;
 }
 
@@ -153,6 +154,9 @@
         // RunLoop Mode
         self.player.runLoopMode = self.runLoopMode;
         
+        // Max Buffer Size
+        self.player.maxBufferSize = self.maxBufferSize;
+        
         // Play Rate
         self.player.playbackRate = self.playbackRate;
         
@@ -207,6 +211,16 @@
     return [NSProcessInfo processInfo].activeProcessorCount > 1 ? NSRunLoopCommonModes : NSDefaultRunLoopMode;
 }
 
+- (void)setMaxBufferSize:(NSUInteger)maxBufferSize
+{
+    _maxBufferSize = maxBufferSize;
+    self.player.maxBufferSize = maxBufferSize;
+}
+
+- (NSUInteger)maxBufferSize {
+    return _maxBufferSize; // Defaults to 0
+}
+
 - (void)setPlaybackRate:(double)playbackRate
 {
     _playbackRate = playbackRate;