From 5ad4639271cc739f19b755c4d554c2ad6fa6f71e Mon Sep 17 00:00:00 2001
From: Jonathan Chang <slycoder@gmail.com>
Date: Wed, 11 Nov 2020 18:03:21 -0800
Subject: [PATCH] Rework local video initialization (#403)

* Rework local video initialization

* fix typo
---
 Example/ios/Podfile.lock | 10 +++----
 ios/RCTTWVideoModule.m   | 64 ++++++++++++++++------------------------
 src/TwilioVideo.ios.js   |  1 +
 3 files changed, 32 insertions(+), 43 deletions(-)

diff --git a/Example/ios/Podfile.lock b/Example/ios/Podfile.lock
index e2aa60ef..e52b0348 100644
--- a/Example/ios/Podfile.lock
+++ b/Example/ios/Podfile.lock
@@ -10,7 +10,7 @@ PODS:
     - React/Core (= 0.59.9)
   - react-native-twilio-video-webrtc (1.0.2-1):
     - React
-    - TwilioVideo (~> 3.2.3)
+    - TwilioVideo (~> 3.7)
   - React/Core (0.59.9):
     - yoga (= 0.59.9.React)
   - React/CxxBridge (0.59.9):
@@ -35,7 +35,7 @@ PODS:
     - React/cxxreact
     - React/jsi
   - React/jsinspector (0.59.9)
-  - TwilioVideo (3.2.5)
+  - TwilioVideo (3.7.1)
   - yoga (0.59.9.React)
 
 DEPENDENCIES:
@@ -68,10 +68,10 @@ SPEC CHECKSUMS:
   Folly: de497beb10f102453a1afa9edbf8cf8a251890de
   glog: 1de0bb937dccdc981596d3b5825ebfb765017ded
   React: a86b92f00edbe1873a63e4a212c29b7a7ad5224f
-  react-native-twilio-video-webrtc: 5a1dc979bfe98c0f8dba110e9b5655d52278f862
-  TwilioVideo: dec31712aab578a783703c8f699c838bea4adf06
+  react-native-twilio-video-webrtc: c33953a98c71b8600ba321e01f52c62e0c20ab6e
+  TwilioVideo: 807526f68043a11f0e17e5c26ef0f0f73d5678e4
   yoga: 03ff42a6f223fb88deeaed60249020d80c3091ee
 
 PODFILE CHECKSUM: a22eec28b45c6a20b9c752a17cdef0f608e13c10
 
-COCOAPODS: 1.9.2
+COCOAPODS: 1.10.0
diff --git a/ios/RCTTWVideoModule.m b/ios/RCTTWVideoModule.m
index d5791c5d..88bf97d7 100644
--- a/ios/RCTTWVideoModule.m
+++ b/ios/RCTTWVideoModule.m
@@ -114,7 +114,9 @@ - (dispatch_queue_t)methodQueue {
 }
 
 - (void)addLocalView:(TVIVideoView *)view {
-  [self.localVideoTrack addRenderer:view];
+  if (self.localVideoTrack != nil) {
+    [self.localVideoTrack addRenderer:view];
+  }
   [self updateLocalViewMirroring:view];
 }
 
@@ -125,7 +127,9 @@ - (void)updateLocalViewMirroring:(TVIVideoView *)view {
 }
 
 - (void)removeLocalView:(TVIVideoView *)view {
-  [self.localVideoTrack removeRenderer:view];
+  if (self.localVideoTrack != nil) {
+    [self.localVideoTrack removeRenderer:view];
+  }
 }
 
 - (void)removeParticipantView:(TVIVideoView *)view sid:(NSString *)sid trackSid:(NSString *)trackSid {
@@ -167,6 +171,12 @@ - (void)addParticipantView:(TVIVideoView *)view sid:(NSString *)sid trackSid:(NS
       return;
   }
   self.localVideoTrack = [TVILocalVideoTrack trackWithSource:self.camera enabled:YES name:@"camera"];
+}
+
+- (void)startCameraCapture {
+  if (self.camera == nil) {
+    return;
+  }
   AVCaptureDevice *camera = [TVICameraSource captureDeviceForPosition:AVCaptureDevicePositionFront];
   [self.camera startCaptureWithDevice:camera completion:^(AVCaptureDevice *device,
           TVIVideoFormat *startFormat,
@@ -185,8 +195,7 @@ - (void)addParticipantView:(TVIVideoView *)view sid:(NSString *)sid trackSid:(NS
 }
 
 RCT_EXPORT_METHOD(stopLocalVideo) {
-  self.localVideoTrack = nil;
-  self.camera = nil;
+    [self clearCameraInstance];
 }
 
 RCT_EXPORT_METHOD(stopLocalAudio) {
@@ -226,27 +235,19 @@ - (void)addParticipantView:(TVIVideoView *)view sid:(NSString *)sid trackSid:(NS
 
 RCT_REMAP_METHOD(setLocalVideoEnabled, enabled:(BOOL)enabled setLocalVideoEnabledWithResolver:(RCTPromiseResolveBlock)resolve
                  rejecter:(RCTPromiseRejectBlock)reject) {
-  if(self.localVideoTrack != nil){
+  if (self.localVideoTrack != nil) {
       [self.localVideoTrack setEnabled:enabled];
+      if (self.camera && self.camera.device) {
+          if (enabled) {
+            [self startCameraCapture];
+          } else {
+            [self clearCameraInstance];
+          }
+      }
       resolve(@(enabled));
-  } else if(enabled) {
-      [self createLocalVideoTrack];
-      resolve(@true);
-  } else {
-      resolve(@false);
-  }
-}
-
--(void)createLocalVideoTrack {
-  [self startLocalVideo];
-  // Publish video so other Room Participants can subscribe
-  // This check is required when TVICameraSource return nil Eg: simulator
-  if(self.localVideoTrack != nil){
-    [self.localParticipant publishVideoTrack:self.localVideoTrack];
   }
 }
 
-
 RCT_EXPORT_METHOD(flipCamera) {
     if (self.camera) {
         AVCaptureDevicePosition position = self.camera.device.position;
@@ -376,22 +377,10 @@ -(NSMutableDictionary*)convertLocalVideoTrackStats:(TVILocalVideoTrackStats *)st
   }
 }
 
--(void)enableLocalVideoAtCreationTime:(BOOL *)enableVideo {
-    if(enableVideo){
-      if (self.localVideoTrack == nil) {
-          // We disabled video in a previous call, attempt to re-enable
-          [self startLocalVideo];
-      } else {
-          [self.localVideoTrack setEnabled:true];
-      }
-    } else {
-        [self stopLocalVideo];
-    }
-}
-
 RCT_EXPORT_METHOD(connect:(NSString *)accessToken roomName:(NSString *)roomName enableVideo:(BOOL *)enableVideo encodingParameters:(NSDictionary *)encodingParameters enableNetworkQualityReporting:(BOOL *)enableNetworkQualityReporting) {
-
-  [self enableLocalVideoAtCreationTime: enableVideo];
+  if (enableVideo) {
+    [self startCameraCapture];
+  }
 
   TVIConnectOptions *connectOptions = [TVIConnectOptions optionsWithToken:accessToken block:^(TVIConnectOptionsBuilder * _Nonnull builder) {
     if (self.localVideoTrack) {
@@ -410,11 +399,11 @@ -(void)enableLocalVideoAtCreationTime:(BOOL *)enableVideo {
     }
 
     builder.roomName = roomName;
-    
+
     if(encodingParameters[@"enableH264Codec"]){
       builder.preferredVideoCodecs = @[ [TVIH264Codec new] ];
     }
-      
+
     if(encodingParameters[@"audioBitrate"] || encodingParameters[@"videoBitrate"]){
       NSInteger audioBitrate = [encodingParameters[@"audioBitrate"] integerValue];
       NSInteger videoBitrate = [encodingParameters[@"videoBitrate"] integerValue];
@@ -446,7 +435,6 @@ - (void)clearCameraInstance {
     // We are done with camera
     if (self.camera) {
         [self.camera stopCapture];
-        self.camera = nil;
     }
 }
 
diff --git a/src/TwilioVideo.ios.js b/src/TwilioVideo.ios.js
index 590094c5..efd1a102 100644
--- a/src/TwilioVideo.ios.js
+++ b/src/TwilioVideo.ios.js
@@ -157,6 +157,7 @@ export default class extends Component {
 
   componentWillMount () {
     this._registerEvents()
+    this._startLocalVideo()
     this._startLocalAudio()
   }