修复退出后台，后置摄像头会自动切成前置摄像头的问题

DevelopmentPods/FUSFoundation/FUSFoundation/Classes/FUSFoundation/Views/StreamView/FUSByteStreamCaptureHelper.m

@@ -46,6 +46,8 @@
 
 @property (nonatomic, strong) NSLock *lock;
 
+@property (nonatomic, assign) AVCaptureDevicePosition currentCameraPosition;
+
 @end
 
 @implementation FUSByteStreamCaptureHelper
@@ -60,6 +62,7 @@
         // 初始化参数值
         _isFirstFrame = YES;
         _mySwitch = YES;
+        _currentCameraPosition = AVCaptureDevicePositionFront;
         
         [self initBeautyEngine];
         [self initStreamingSession];
@@ -75,15 +78,18 @@
 
 - (void)fus_becomeActiveNotification:(NSNotification *)notification {
     
+    AVCaptureDevicePosition position = _capture.cameraPosition;
     if (!self.engine.camera.isRunning) {
         [self.engine.camera startCameraCapture];
     }
     
     [self.capture startVideoCapture];
+    self.capture.cameraPosition = self.currentCameraPosition;
 }
 
 - (void)fus_resignActiveNotification:(NSNotification *)notification {
     
+    AVCaptureDevicePosition position = _capture.cameraPosition;
     if (!self.engine.camera.isRunning) {
         [self.engine.camera stopCameraCapture];
     }
@@ -131,7 +137,7 @@
         }
     }];
     
-    _capture.cameraPosition = AVCaptureDevicePositionFront ;
+    _capture.cameraPosition = AVCaptureDevicePositionFront;
     _capture.inPixelFmt = kCVPixelFormatType_32BGRA;
     [_capture setEnableEffect:YES];
     [_capture resetPreviewView:self.previewContainer];
@@ -162,6 +168,7 @@
     [self.engine.camera setWhiteBalanceMode:AVCaptureWhiteBalanceModeContinuousAutoWhiteBalance];
     [self.engine.camera setExposureMode:AVCaptureExposureModeContinuousAutoExposure];
     [self.engine.camera setCaptureFocusMode:AVCaptureFocusModeContinuousAutoFocus];
+    self.capture.cameraPosition = self.currentCameraPosition;
 
 }
 
@@ -308,6 +315,7 @@
     
     /// 开启推流
     [self.engine startStreaming];
+    self.capture.cameraPosition = self.currentCameraPosition;
 }
 
 /**
@@ -319,6 +327,16 @@
     if (_engine.isStreaming) {
         [_engine stopStreaming];
     }
+    
+    // 背景模式
+    [_engine setEnableAudioCaptureInBackground:NO];
+    
+    _engine.liveSession.echoCancellationEnabled = NO;
+    [_engine setEchoCancellationEnabled:NO];
+    [_engine setupAudioCaptureWithConfig:nil];
+    if (_engine.liveSession.configuration) {
+        [_engine setupLiveSessionWithConfig:nil];
+    }
 }
 
 /**
@@ -330,21 +348,26 @@
         return;
     }
     
+    // 视讯的时候只需要采集。不需要推流操作
+    if (self.config.captureType == FUSStreamCaptureTypeVideoChat) {
+        return;
+    }
+    
     BOOL muted = self.mute;
     // 在后台期间不做重载操作，容易导致闪退
     if ([UIApplication sharedApplication].applicationState == UIApplicationStateBackground) {
         return;
     }
     
-    if (self.engine.liveSession.liveSessionState == LiveStreamSessionStateError ||
-        self.engine.liveSession.liveSessionState == LiveStreamSessionStateReconnecting) {
+    if (self.engine.liveSession.liveSessionState == LiveStreamSessionStateReconnecting ||
+        self.engine.liveSession.liveSessionState == LiveStreamSessionStateStarted ||
+        self.engine.liveSession.liveSessionState == LiveStreamSessionStateStarting) {
         [self.engine startStreaming];
         self.mute = muted;
         return;
     }
     
-    // 视讯的时候只需要采集。不需要推流操作
-    if (self.config.captureType != FUSStreamCaptureTypeVideoChat) {
+    if (self.engine.liveSession.liveSessionState == LiveStreamSessionStateError) {
         
         // 重新推流。先把原本的推流对象释放掉。生成新的推流对象，否则会发送推不上流的情况
         [self fus_stopStreamPush];
@@ -356,6 +379,9 @@
             [self fus_startStreamPushWithUrl:self.pushUrl completionHandler:self.completionHandler];
             self.mute = muted;
         });
+    } else {
+        [self fus_setupLiveSessionConfigs];
+        [self fus_startStreamPushWithUrl:self.pushUrl completionHandler:self.completionHandler];
     }
 }
 
@@ -393,6 +419,12 @@
  */
 - (void)fus_switchCamera
 {
+    
+    if (self.currentCameraPosition == AVCaptureDevicePositionBack) {
+        self.currentCameraPosition = AVCaptureDevicePositionFront;
+    } else if (self.currentCameraPosition == AVCaptureDevicePositionFront) {
+        self.currentCameraPosition = AVCaptureDevicePositionBack;
+    }
     [self.engine.camera switchCamera];
     [self fus_offTorch];
 }
@@ -418,8 +450,10 @@
 {
     if (position == AVCaptureDevicePositionBack && [self.engine.camera isFrontFacingCameraPresent]) {
         self.engine.camera.bMirrorRearCamera = position;
+        self.currentCameraPosition = position;
     } else if (position == AVCaptureDevicePositionFront && [self.engine.camera isBackFacingCameraPresent]) {
         self.engine.camera.bMirrorRearCamera = position;
+        self.currentCameraPosition = position;
     }
 }
 
@@ -461,6 +495,7 @@
 {
     if (enable) {
         [self.engine.camera startCameraCapture];
+        self.capture.cameraPosition = self.currentCameraPosition;
     } else {
         [self.engine.camera stopCameraCapture];
     }

Modules/FUSShowRoomModule/FUSShowRoomModule/Features/NewLive/Main/View/Push/LiveStartView/FUSLiveStartSetPrivacyView.swift

@@ -103,7 +103,7 @@ import FUSCommon
         //这里特殊用户有不一样的逻辑
         let iconImagesList = ["live_start_openScope_cell","live_start_passwordScope_cell"/*,"live_start_intimacyScope_cell"*/]
         let titlesList = [String.fus_versionLocalString("公开屋"), .fus_versionLocalString("私享屋")/*, .fus_localString("亲密圈")*/]
-        let subTitlesList = [String.fus_localString("所有人可进入房间"), .fus_versionLocalString("玩家正确输入密码后可进入屋内")/*, .fus_localString("仅亲密好友可进入房间")*/]
+        let subTitlesList = [String.fus_localString("所有人可进入房间"), .fus_versionLocalString("已关闭窗帘，玩家输入密码打开")/*, .fus_localString("仅亲密好友可进入房间")*/]
         
         let itemHeight = 56.0
         privacyContentView.snp.makeConstraints { make in