Create experimental Obj-C++ API.

This can be used to wrap Objective-C components in C++ classes, so users
can use the WebRTC C++ API directly together with the iOS specific
components provided by our SDK.

Bug: webrtc:8832
Change-Id: I6d34f7ec62d51df8d3a5340a2e17d30ae73e13e8
Reviewed-on: https://webrtc-review.googlesource.com/46162
Commit-Queue: Anders Carlsson <andersc@webrtc.org>
Reviewed-by: Rasmus Brandt <brandtr@webrtc.org>
Reviewed-by: Kári Helgason <kthelgason@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#21850}

sdk/objc/Framework/Native/api/video_decoder_factory.h

@@ -0,0 +1,27 @@
+/*
+ *  Copyright 2018 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.
+ */
+
+#ifndef SDK_OBJC_FRAMEWORK_NATIVE_API_VIDEO_DECODER_FACTORY_H_
+#define SDK_OBJC_FRAMEWORK_NATIVE_API_VIDEO_DECODER_FACTORY_H_
+
+#include <memory>
+
+#import "WebRTC/RTCVideoCodecFactory.h"
+
+#include "api/video_codecs/video_decoder_factory.h"
+
+namespace webrtc {
+
+std::unique_ptr<VideoDecoderFactory> ObjCToNativeVideoDecoderFactory(
+    id<RTCVideoDecoderFactory> objc_video_decoder_factory);
+
+}  // namespace webrtc
+
+#endif  // SDK_OBJC_FRAMEWORK_NATIVE_API_VIDEO_DECODER_FACTORY_H_

sdk/objc/Framework/Native/api/video_decoder_factory.mm

@@ -0,0 +1,23 @@
+/*
+ *  Copyright 2018 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 "sdk/objc/Framework/Native/api/video_decoder_factory.h"
+
+#include "rtc_base/ptr_util.h"
+#include "sdk/objc/Framework/Native/src/objc_video_decoder_factory.h"
+
+namespace webrtc {
+
+std::unique_ptr<VideoDecoderFactory> ObjCToNativeVideoDecoderFactory(
+    id<RTCVideoDecoderFactory> objc_video_decoder_factory) {
+  return rtc::MakeUnique<ObjCVideoDecoderFactory>(objc_video_decoder_factory);
+}
+
+}  // namespace webrtc

sdk/objc/Framework/Native/api/video_encoder_factory.h

@@ -0,0 +1,27 @@
+/*
+ *  Copyright 2018 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.
+ */
+
+#ifndef SDK_OBJC_FRAMEWORK_NATIVE_API_VIDEO_ENCODER_FACTORY_H_
+#define SDK_OBJC_FRAMEWORK_NATIVE_API_VIDEO_ENCODER_FACTORY_H_
+
+#include <memory>
+
+#import "WebRTC/RTCVideoCodecFactory.h"
+
+#include "api/video_codecs/video_encoder_factory.h"
+
+namespace webrtc {
+
+std::unique_ptr<VideoEncoderFactory> ObjCToNativeVideoEncoderFactory(
+    id<RTCVideoEncoderFactory> objc_video_encoder_factory);
+
+}  // namespace webrtc
+
+#endif  // SDK_OBJC_FRAMEWORK_NATIVE_API_VIDEO_ENCODER_FACTORY_H_

sdk/objc/Framework/Native/api/video_encoder_factory.mm

@@ -0,0 +1,23 @@
+/*
+ *  Copyright 2018 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 "sdk/objc/Framework/Native/api/video_encoder_factory.h"
+
+#include "rtc_base/ptr_util.h"
+#include "sdk/objc/Framework/Native/src/objc_video_encoder_factory.h"
+
+namespace webrtc {
+
+std::unique_ptr<VideoEncoderFactory> ObjCToNativeVideoEncoderFactory(
+    id<RTCVideoEncoderFactory> objc_video_encoder_factory) {
+  return rtc::MakeUnique<ObjCVideoEncoderFactory>(objc_video_encoder_factory);
+}
+
+}  // namespace webrtc

sdk/objc/Framework/Native/api/video_frame_buffer.h

@@ -0,0 +1,26 @@
+/*
+ *  Copyright 2018 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.
+ */
+
+#ifndef SDK_OBJC_FRAMEWORK_NATIVE_API_VIDEO_FRAME_BUFFER_H_
+#define SDK_OBJC_FRAMEWORK_NATIVE_API_VIDEO_FRAME_BUFFER_H_
+
+#import "WebRTC/RTCVideoFrameBuffer.h"
+
+#include "common_video/include/video_frame_buffer.h"
+#include "rtc_base/scoped_ref_ptr.h"
+
+namespace webrtc {
+
+rtc::scoped_refptr<webrtc::VideoFrameBuffer> ObjCToNativeVideoFrameBuffer(
+    id<RTCVideoFrameBuffer> objc_video_frame_buffer);
+
+}  // namespace webrtc
+
+#endif  // SDK_OBJC_FRAMEWORK_NATIVE_API_VIDEO_FRAME_BUFFER_H_

sdk/objc/Framework/Native/api/video_frame_buffer.mm

@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2018 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 "sdk/objc/Framework/Native/api/video_frame_buffer.h"
+
+#include "sdk/objc/Framework/Native/src/objc_frame_buffer.h"
+
+namespace webrtc {
+
+rtc::scoped_refptr<webrtc::VideoFrameBuffer> ObjCToNativeVideoFrameBuffer(
+    id<RTCVideoFrameBuffer> objc_video_frame_buffer) {
+  return new rtc::RefCountedObject<webrtc::ObjCFrameBuffer>(objc_video_frame_buffer);
+}
+
+}  // namespace webrtc