iOS: Add interface for injecting custom shaders

webrtc/sdk/objc/Framework/Classes/RTCDefaultShaderDelegate.h

 /*
  *  Copyright 2017 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#import <GLKit/GLKit.h>
-
-@class RTCVideoFrame;
+#import "WebRTC/RTCVideoViewShaderDelegate.h"
 
 NS_ASSUME_NONNULL_BEGIN
 
-@interface RTCNV12TextureCache : NSObject
-
-@property(nonatomic, readonly) GLuint yTexture;
-@property(nonatomic, readonly) GLuint uvTexture;
-
-- (nullable instancetype)initWithContext:(EAGLContext *)context;
-
-- (BOOL)uploadFrameToTextures:(RTCVideoFrame *)frame;
-
-- (void)releaseTextures;
+@interface RTCDefaultShaderDelegate : NSObject <RTCVideoViewShaderDelegate>

[daniela-webrtc, 2017/05/11 17:31:20]

Do you mind adding short doc comment about this class? The name is quite generic
so something along the lines
'Default shader for i420 and nv12 frames' should be sufficient.

[magjed_webrtc, 2017/05/25 14:26:45]

Done.

 
 @end
 
 NS_ASSUME_NONNULL_END