tencent cloud

// Turn the mic on
[self.trtcCloud muteLocalAudio:NO];
// Turn the mic off
[self.trtcCloud muteLocalAudio:YES];

// Turn the speaker on
[self.trtcCloud muteAllRemoteAudio:NO];
// Turn the speaker off
[self.trtcCloud muteAllRemoteAudio:YES];

// Turn the camera on, specifying front or rear camera and the rendering widget
[self.trtcCloud startLocalPreview:self.isFrontCamera view:self.videoView];
// Turn the camera off
[self.trtcCloud stopLocalPreview];

// Switch to earpiece
[[self.trtcCloud getDeviceManager] setAudioRoute:TXAudioRouteEarpiece];
// Switch to speakerphone
[[self.trtcCloud getDeviceManager] setAudioRoute:TXAudioRouteSpeakerphone];

// Determine if the current camera is front-facing
BOOL isFrontCamera = [[self.trtcCloud getDeviceManager] isFrontCamera];
// Switch between front and rear cameras, true: switch to front-facing; false: switch to rear-facing
[[self.trtcCloud getDeviceManager] switchCamera:!isFrontCamera];

// Update local preview screen rendering control
[self.trtcCloud updateLocalView:self.previewView];
// Update remote user video rendering control
[self.trtcCloud updateRemoteView:self.previewView streamType:TRTCVideoStreamTypeBig forUser:self.userId];

#pragma mark - TRTCCloudDelegate

- (void)onNetworkQuality:(TRTCQualityInfo *)localQuality remoteQuality:(NSArray<TRTCQualityInfo *> *)remoteQuality {
    if (remoteQuality.count > 0) {
        switch(remoteQuality[0].quality) {
            case TRTCQuality_Unknown:
                NSLog(@"Undefined ");
                break;
            case TRTCQuality_Excellent:
                NSLog(@"The other party's network is very good");
                break;
            case TRTCQuality_Good:
                NSLog(@"The other party's network is quite good");
                break;
            case TRTCQuality_Poor:
                NSLog(@"The other party's network is average");
                break;
            case TRTCQuality_Bad:
                NSLog(@"The other party's network is relatively poor");
                break;
            case TRTCQuality_Vbad:
                NSLog(@"The other party's network is very poor");
                break;
            case TRTCQuality_Down:
                NSLog(@"The other party's network is extremely poor");
                break;
            default:
                break;
        }
    }
}

// Start call time
@property (nonatomic, assign) NSTimeInterval callStartTime;
// End Call Time
@property (nonatomic, assign) NSTimeInterval callFinishTime;
// Call Duration (seconds)
@property (nonatomic, assign) NSInteger callDuration;

// Remote User Join Callback
- (void)onRemoteUserEnterRoom:(NSString *)userId {
    self.callStartTime = [[NSDate date] timeIntervalSince1970];
}

// Local User Leave Callback
- (void)onExitRoom:(NSInteger)reason {
    self.callFinishTime = [[NSDate date] timeIntervalSince1970];
    self.callDuration = (NSInteger)(self.callFinishTime - self.callStartTime);
}