iOS HW H264 support.

talk/app/webrtc/objc/h264decoderfactory.cc

 /*
  * libjingle
  * Copyright 2015 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
  *     this list of conditions and the following disclaimer in the documentation
  *     and/or other materials provided with the distribution.
  *  3. The name of the author may not be used to endorse or promote products
  *     derived from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
  * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#import <UIKit/UIKit.h>
+#include "talk/app/webrtc/objc/h264decoderfactory.h"
 
-@class ARDMainView;
+#include "webrtc/modules/video_coding/codecs/h264/include/h264.h"
 
-@protocol ARDMainViewDelegate <NSObject>
+namespace webrtc {
 
-- (void)mainView:(ARDMainView *)mainView didInputRoom:(NSString *)room;
+VideoDecoder* H264DecoderFactory::CreateVideoDecoder(VideoCodecType type) {
+  if (type == kVideoCodecH264) {
+    return H264Decoder::Create();
+  }
+  return nullptr;
+}
 
-@end
+void H264DecoderFactory::DestroyVideoDecoder(VideoDecoder* decoder) {
+  delete decoder;
+}
 
-// The main view of AppRTCDemo. It contains an input field for entering a room
-// name on apprtc to connect to.
-@interface ARDMainView : UIView
-
-@property(nonatomic, weak) id<ARDMainViewDelegate> delegate;
-
-@end
+}  // namespace webrtc