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

webrtc/sdk/BUILD.gn

 # Copyright 2016 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("../webrtc.gni")
 if (is_ios) {
@@ skipping 679 matching lines @@
         # Suppress warnings from the Chromium Clang plugin
         # (bugs.webrtc.org/163).
         suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
       }
 
       libs = [ "CoreVideo.framework" ]
     }
 
     rtc_static_library("objc_videotoolbox") {
       sources = [
-        "objc/Framework/Classes/VideoToolbox/decoder.h",
-        "objc/Framework/Classes/VideoToolbox/decoder.mm",
-        "objc/Framework/Classes/VideoToolbox/encoder.h",
-        "objc/Framework/Classes/VideoToolbox/encoder.mm",
+        "objc/Framework/Classes/VideoToolbox/RTCVideoDecoderH264.mm",
+        "objc/Framework/Classes/VideoToolbox/RTCVideoEncoderH264.mm",
+        "objc/Framework/Classes/VideoToolbox/helpers.cc",
+        "objc/Framework/Classes/VideoToolbox/helpers.h",
         "objc/Framework/Classes/VideoToolbox/nalu_rewriter.cc",
         "objc/Framework/Classes/VideoToolbox/nalu_rewriter.h",
         "objc/Framework/Classes/VideoToolbox/objc_video_decoder_factory.h",
         "objc/Framework/Classes/VideoToolbox/objc_video_decoder_factory.mm",
         "objc/Framework/Classes/VideoToolbox/objc_video_encoder_factory.h",
         "objc/Framework/Classes/VideoToolbox/objc_video_encoder_factory.mm",
         "objc/Framework/Headers/WebRTC/RTCVideoFrameBuffer.h",
       ]
 
       configs += [ "..:common_objc" ]
@@ skipping 31 matching lines @@
         public_deps = [
           "$rtc_libyuv_dir",
         ]
       } else {
         # Need to add a directory normally exported by libyuv.
         include_dirs = [ "$rtc_libyuv_dir/include" ]
       }
     }
   }
 }