Add metal view, shaders and renderer.

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 49 matching lines @@
       sources += [
         "objc/Framework/Classes/RTCCameraPreviewView.m",
         "objc/Framework/Classes/RTCUIApplication.h",
         "objc/Framework/Classes/RTCUIApplication.mm",
         "objc/Framework/Classes/UIDevice+RTCDevice.mm",
         "objc/Framework/Classes/helpers.h",
         "objc/Framework/Classes/helpers.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",
+        ]
+      }
     }
     if (!build_with_chromium) {
       sources += [
         "objc/Framework/Classes/RTCFileLogger.mm",
         "objc/Framework/Headers/WebRTC/RTCFileLogger.h",
       ]
     }
   }
 
   rtc_static_library("rtc_sdk_peerconnection_objc") {
@@ skipping 203 matching lines @@
         "objc/Framework/Headers/WebRTC/RTCIceServer.h",
         "objc/Framework/Headers/WebRTC/RTCLegacyStatsReport.h",
         "objc/Framework/Headers/WebRTC/RTCLogging.h",
         "objc/Framework/Headers/WebRTC/RTCMacros.h",
         "objc/Framework/Headers/WebRTC/RTCMediaConstraints.h",
         "objc/Framework/Headers/WebRTC/RTCMediaSource.h",
         "objc/Framework/Headers/WebRTC/RTCMediaStream.h",
         "objc/Framework/Headers/WebRTC/RTCMediaStreamTrack.h",
         "objc/Framework/Headers/WebRTC/RTCMetrics.h",
         "objc/Framework/Headers/WebRTC/RTCMetricsSampleInfo.h",
+        "objc/Framework/Headers/WebRTC/RTCMTLVideoView.h",
         "objc/Framework/Headers/WebRTC/RTCPeerConnection.h",
         "objc/Framework/Headers/WebRTC/RTCPeerConnectionFactory.h",
         "objc/Framework/Headers/WebRTC/RTCRtpCodecParameters.h",
         "objc/Framework/Headers/WebRTC/RTCRtpEncodingParameters.h",
         "objc/Framework/Headers/WebRTC/RTCRtpParameters.h",
         "objc/Framework/Headers/WebRTC/RTCRtpReceiver.h",
         "objc/Framework/Headers/WebRTC/RTCRtpSender.h",
         "objc/Framework/Headers/WebRTC/RTCSSLAdapter.h",
         "objc/Framework/Headers/WebRTC/RTCSessionDescription.h",
         "objc/Framework/Headers/WebRTC/RTCTracing.h",
@@ skipping 92 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" ]
     }
   }
 }