iOS/MacOS:Refactor metal rendering by extracting common implementation

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 40 matching lines @@
       "objc/Framework/Classes/helpers.mm",
       "objc/Framework/Headers/WebRTC/RTCDispatcher.h",
       "objc/Framework/Headers/WebRTC/RTCFieldTrials.h",
       "objc/Framework/Headers/WebRTC/RTCLogging.h",
       "objc/Framework/Headers/WebRTC/RTCMacros.h",
       "objc/Framework/Headers/WebRTC/RTCMetrics.h",
       "objc/Framework/Headers/WebRTC/RTCMetricsSampleInfo.h",
       "objc/Framework/Headers/WebRTC/RTCSSLAdapter.h",
       "objc/Framework/Headers/WebRTC/RTCTracing.h",
     ]
+
+    if (is_mac || (is_ios && current_cpu == "arm64")) {
+      sources += [
+        "objc/Framework/Classes/Metal/RTCMTLI420Renderer.h",
+        "objc/Framework/Classes/Metal/RTCMTLI420Renderer.mm",
+        "objc/Framework/Classes/Metal/RTCMTLRenderer+Private.h",
+        "objc/Framework/Classes/Metal/RTCMTLRenderer.h",
+        "objc/Framework/Classes/Metal/RTCMTLRenderer.mm",
+      ]
+      if (is_ios) {
+        sources += [
+          "objc/Framework/Classes/Metal/RTCMTLNV12Renderer.h",
+          "objc/Framework/Classes/Metal/RTCMTLNV12Renderer.mm",
+          "objc/Framework/Classes/Metal/RTCMTLVideoView.m",
+        ]
+      }
+      if (is_mac) {
+        sources += [ "objc/Framework/Classes/Metal/RTCMTLNSVideoView.m" ]
+      }
+    }
+
     if (is_ios) {
       sources += [
         "objc/Framework/Classes/RTCCameraPreviewView.m",
         "objc/Framework/Classes/RTCUIApplication.h",
         "objc/Framework/Classes/RTCUIApplication.mm",
         "objc/Framework/Classes/UIDevice+RTCDevice.mm",
         "objc/Framework/Headers/WebRTC/RTCCameraPreviewView.h",
         "objc/Framework/Headers/WebRTC/UIDevice+RTCDevice.h",
       ]
-      if (current_cpu == "arm64") {
-        sources += [
-          "objc/Framework/Classes/Metal/RTCMTLNV12Renderer.h",
-          "objc/Framework/Classes/Metal/RTCMTLNV12Renderer.mm",
-          "objc/Framework/Classes/Metal/RTCMTLVideoView.m",
-        ]
-      }
 
       libs = [ "AVFoundation.framework" ]
       if (current_cpu == "arm64") {
         libs += [
           "CoreVideo.framework",
           "Metal.framework",
           "MetalKit.framework",
         ]
       }
     }
@@ skipping 116 matching lines @@
       libs = [
         "CoreGraphics.framework",
         "GLKit.framework",
         "OpenGLES.framework",
         "QuartzCore.framework",
       ]
     }
 
     if (is_mac) {
       sources += [
-        "objc/Framework/Classes/Metal/RTCMTLI420Renderer.h",
-        "objc/Framework/Classes/Metal/RTCMTLI420Renderer.mm",
-        "objc/Framework/Classes/Metal/RTCMTLNSVideoView.m",
         "objc/Framework/Classes/RTCNSGLVideoView.m",
         "objc/Framework/Headers/WebRTC/RTCMTLNSVideoView.h",
         "objc/Framework/Headers/WebRTC/RTCNSGLVideoView.h",
       ]
       libs = [
         "CoreVideo.framework",
         "CoreMedia.framework",
         "OpenGL.framework",
         "Metal.framework",
         "MetalKit.framework",
@@ skipping 200 matching lines @@
       deps += [ "$rtc_libyuv_dir" ]
       public_deps = [
         "$rtc_libyuv_dir",
       ]
     } else {
       # Need to add a directory normally exported by libyuv.
       include_dirs = [ "$rtc_libyuv_dir/include" ]
     }
   }
 }