iOS render: Handle frame rotation in OpenGL

webrtc/sdk/objc/Framework/Classes/RTCEAGLVideoView.mm

 /*
  *  Copyright 2015 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 "WebRTC/RTCEAGLVideoView.h"
 
 #import <GLKit/GLKit.h>
 
 #import "RTCOpenGLVideoRenderer.h"
 #import "WebRTC//RTCVideoFrame.h"

[tkchin_webrtc, 2016/08/09 17:42:20]

Mind fixing this typo? //

[magjed_webrtc, 2016/08/10 10:26:06]

Done.

 
 // RTCDisplayLinkTimer wraps a CADisplayLink and is set to fire every two screen
 // refreshes, which should be 30fps. We wrap the display link in order to avoid
 // a retain cycle since CADisplayLink takes a strong reference onto its target.
 // The timer is paused by default.
 @interface RTCDisplayLinkTimer : NSObject
 
 @property(nonatomic) BOOL isPaused;
 
 - (instancetype)initWithTimerHandler:(void (^)(void))timerHandler;
@@ skipping 229 matching lines @@
 
 - (void)didBecomeActive {
   [self setupGL];
 }
 
 - (void)willResignActive {
   [self teardownGL];
 }
 
 @end