iOS render: Handle frame rotation in OpenGL

webrtc/sdk/objc/Framework/Classes/RTCVideoFrame+Private.h

Index: webrtc/sdk/objc/Framework/Classes/RTCVideoFrame+Private.h
diff --git a/webrtc/sdk/objc/Framework/Classes/RTCVideoFrame+Private.h b/webrtc/sdk/objc/Framework/Classes/RTCVideoFrame+Private.h
index a4807127ca7a9646d477ceac0d64552ac8d9f799..c882f106ecd5f92df4c781f16ee91d22f55632d7 100644
--- a/webrtc/sdk/objc/Framework/Classes/RTCVideoFrame+Private.h
+++ b/webrtc/sdk/objc/Framework/Classes/RTCVideoFrame+Private.h
@@ -19,7 +19,10 @@ NS_ASSUME_NONNULL_BEGIN
 @property(nonatomic, readonly)
     rtc::scoped_refptr<webrtc::VideoFrameBuffer> i420Buffer;
 
-- (instancetype)initWithNativeFrame:(const cricket::VideoFrame *)nativeFrame
+- (instancetype)initWithVideoBuffer:
+                    (rtc::scoped_refptr<webrtc::VideoFrameBuffer>)videoBuffer
+                           rotation:(int)rotation

[tkchin_webrtc, 2016/08/08 22:58:45]

would be nice to use the enum type, or have the enum explicitly be of int type

[magjed_webrtc, 2016/08/09 13:54:27]

I initially tried to use webrtc::VideoRotation, but gave up when I hit this
compile error:
../../webrtc/sdk/objc/Framework/Classes/RTCEAGLVideoView.m -o
obj/webrtc/sdk/objc/Framework/Classes/rtc_sdk_peerconnection_objc.RTCEAGLVideoView.o
In file included from
../../webrtc/sdk/objc/Framework/Classes/RTCEAGLVideoView.m:16:
In file included from
../../webrtc/sdk/objc/Framework/Headers/WebRTC//RTCVideoFrame.h:16:
../../webrtc/common_video/rotation.h:14:1: error: unknown type name 'namespace'
namespace webrtc {

I tried a little harder this time, and it seems it's enough to rename
RTCEAGLVideoView.m to RTCEAGLVideoView.mm. Is that ok to do?

+                        timeStampNs:(int64_t)timeStampNs
     NS_DESIGNATED_INITIALIZER;
 
 @end