Implement H264 codec in Objective-C classes.

webrtc/modules/video_coding/codecs/test/objc_codec_h264_test.mm

+/*
+ *  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.
+ */
+
+#include "webrtc/modules/video_coding/codecs/test/objc_codec_h264_test.h"
+
+#import "WebRTC/RTCVideoCodecH264.h"
+#include "webrtc/sdk/objc/Framework/Classes/PeerConnection/objc_video_decoder_factory.h"
+#include "webrtc/sdk/objc/Framework/Classes/PeerConnection/objc_video_encoder_factory.h"
+
+namespace webrtc {
+
+/** Create a wrapped factory that uses the default RTCVideoEncoder used from Objective-C. */
+ObjCVideoEncoderFactoryWrapper::ObjCVideoEncoderFactoryWrapper()
+    : encoder_factory_(new ObjCVideoEncoderFactory([[RTCVideoEncoderFactoryH264 alloc] init])) {}
+
+ObjCVideoEncoderFactoryWrapper::~ObjCVideoEncoderFactoryWrapper() {}
+
+cricket::WebRtcVideoEncoderFactory* ObjCVideoEncoderFactoryWrapper::wrapped_encoder_factory()
+    const {
+  return encoder_factory_;
+}
+
+/** Create a wrapped factory that uses the default RTCVideoDecoder used from Objective-C. */
+ObjCVideoDecoderFactoryWrapper::ObjCVideoDecoderFactoryWrapper()
+    : decoder_factory_(new ObjCVideoDecoderFactory([[RTCVideoDecoderFactoryH264 alloc] init])) {}
+
+ObjCVideoDecoderFactoryWrapper::~ObjCVideoDecoderFactoryWrapper() {}
+
+cricket::WebRtcVideoDecoderFactory* ObjCVideoDecoderFactoryWrapper::wrapped_decoder_factory()
+    const {
+  return decoder_factory_;
+}
+
+}  // namespace webrtc