ObjC: Implement HW codecs in ObjC instead of C++

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.
  */
 
-#import <Foundation/Foundation.h>
+#include "webrtc/modules/video_coding/codecs/test/objc_codec_h264_test.h"
 
-#import <WebRTC/RTCMacros.h>
-#import <WebRTC/RTCVideoCodecFactory.h>
+#import "WebRTC/RTCVideoCodecH264.h"
+#include "webrtc/sdk/objc/Framework/Classes/VideoToolbox/objc_video_decoder_factory.h"
+#include "webrtc/sdk/objc/Framework/Classes/VideoToolbox/objc_video_encoder_factory.h"
 
-/** Class for H264 specific config. */
-typedef NS_ENUM(NSUInteger, RTCH264PacketizationMode) {
-  NonInterleaved = 0,  // Mode 1 - STAP-A, FU-A is allowed
-  SingleNalUnit        // Mode 0 - only single NALU allowed
-};
+namespace webrtc {
 
-RTC_EXPORT
-@interface RTCCodecSpecificInfoH264 : NSObject<RTCCodecSpecificInfo>
+std::unique_ptr<cricket::WebRtcVideoEncoderFactory> CreateObjCEncoderFactory() {
+  return std::unique_ptr<cricket::WebRtcVideoEncoderFactory>(
+      new ObjCVideoEncoderFactory([[RTCVideoEncoderFactoryH264 alloc] init]));
+}
 
-@property(nonatomic, assign) RTCH264PacketizationMode packetizationMode;
+std::unique_ptr<cricket::WebRtcVideoDecoderFactory> CreateObjCDecoderFactory() {
+  return std::unique_ptr<cricket::WebRtcVideoDecoderFactory>(
+      new ObjCVideoDecoderFactory([[RTCVideoDecoderFactoryH264 alloc] init]));
+}
 
-@end
-
-/** Encoder. */
-RTC_EXPORT
-@interface RTCVideoEncoderH264 : NSObject<RTCVideoEncoder>
-@end
-
-/** Decoder. */
-RTC_EXPORT
-@interface RTCVideoDecoderH264 : NSObject<RTCVideoDecoder>
-@end
-
-/** Encoder factory. */
-RTC_EXPORT
-@interface RTCVideoEncoderFactoryH264 : NSObject<RTCVideoEncoderFactory>
-@end
-
-/** Decoder factory. */
-RTC_EXPORT
-@interface RTCVideoDecoderFactoryH264 : NSObject<RTCVideoDecoderFactory>
-@end
+}  // namespace webrtc