From e7e0602a0da3acbf4b6a808a113f31ee89e1879b Mon Sep 17 00:00:00 2001
From: Piasy Xu <xz4215@gmail.com>
Date: Wed, 30 May 2018 23:31:07 +0800
Subject: [PATCH] ObjC: Notify local video track
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The macOS demo add camera preview in didReceiveLocalVideoTrack callback, but this callback is never called.

Bug: webrtc:9276
Change-Id: I60b9cc69672f3654d4e36de0e8140e0bbb957540
Reviewed-on: https://webrtc-review.googlesource.com/77950
Commit-Queue: Taylor Brandstetter <deadbeef@webrtc.org>
Reviewed-by: Kári Helgason <kthelgason@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23458}
---
 AUTHORS                                   | 1 +
 examples/objc/AppRTCMobile/ARDAppClient.m | 1 +
 2 files changed, 2 insertions(+)

diff --git a/AUTHORS b/AUTHORS
index 83a74af633..15f2589e05 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -62,6 +62,7 @@ Korniltsev Anatoly <korniltsev.anatoly@gmail.com>
 Todd Wong <todd.wong.ndq@gmail.com>
 Maxim Pavlov <pavllovmax@gmail.com>
 Yusuke Suzuki <utatane.tea@gmail.com>
+Piasy Xu <xz4215@gmail.com>
 
 &yet LLC <*@andyet.com>
 Agora IO <*@agora.io>
diff --git a/examples/objc/AppRTCMobile/ARDAppClient.m b/examples/objc/AppRTCMobile/ARDAppClient.m
index b3fb2495c8..11c6e34cbe 100644
--- a/examples/objc/AppRTCMobile/ARDAppClient.m
+++ b/examples/objc/AppRTCMobile/ARDAppClient.m
@@ -696,6 +696,7 @@ static int const kKbpsMultiplier = 1000;
   _localVideoTrack = [self createLocalVideoTrack];
   if (_localVideoTrack) {
     [_peerConnection addTrack:_localVideoTrack streamIds:@[ kARDMediaStreamId ]];
+    [_delegate appClient:self didReceiveLocalVideoTrack:_localVideoTrack];
     // We can set up rendering for the remote track right away since the transceiver already has an
     // RTCRtpReceiver with a track. The track will automatically get unmuted and produce frames
     // once RTP is received.