Enabling Screen Sharing

#import "SampleHandler.h"
@import TXLiteAVSDK_ReplayKitExt;

#define APPGROUP @"group.com.tencent.liteav.RPLiveStreamShare"

@interface SampleHandler() <TXReplayKitExtDelegate>

@end

@implementation SampleHandler
// Note: Replace `APPGROUP` with the ID of the App Group created earlier.
- (void)broadcastStartedWithSetupInfo:(NSDictionary<NSString *,NSObject *> *)setupInfo {
    [[TXReplayKitExt sharedInstance] setupWithAppGroup:APPGROUP delegate:self];
}

- (void)broadcastPaused {
    // User has requested to pause the broadcast. Samples will stop being delivered.
}

- (void)broadcastResumed {
    // User has requested to resume the broadcast. Samples delivery will resume.
}

- (void)broadcastFinished {
    [[TXReplayKitExt sharedInstance] finishBroadcast];
    // User has requested to finish the broadcast.
}

#pragma mark - TXReplayKitExtDelegate
- (void)broadcastFinished:(TXReplayKitExt *)broadcast reason:(TXReplayKitExtReason)reason
{
    NSString *tip = @"";
    switch (reason) {
        case TXReplayKitExtReasonRequestedByMain:
            tip = @"Screen sharing ended";
            break;
        case TXReplayKitExtReasonDisconnected:
            tip = @"Application disconnected";
            break;
        case TXReplayKitExtReasonVersionMismatch:
            tip = @"Integration error (SDK version mismatch)";
            break;
    }

    NSError *error = [NSError errorWithDomain:NSStringFromClass(self.class)
                                         code:0
                                     userInfo:@{
                                         NSLocalizedFailureReasonErrorKey:tip
                                     }];
    [self finishBroadcastWithError:error];
}

- (void)processSampleBuffer:(CMSampleBufferRef)sampleBuffer withType:(RPSampleBufferType)sampleBufferType {
    switch (sampleBufferType) {
        case RPSampleBufferTypeVideo:
            [[TXReplayKitExt sharedInstance] sendVideoSampleBuffer:sampleBuffer];
            break;
        case RPSampleBufferTypeAudioApp:
            // Handle audio sample buffer for app audio
            break;
        case RPSampleBufferTypeAudioMic:
            // Handle audio sample buffer for mic audio
            break;

        default:
            break;
    }
}
@end


// Start screen sharing. You need to replace `APPGROUP` with the ID of the App Group created earlier.
- (void)startScreenCapture {
    TRTCVideoEncParam *videoEncConfig = [[TRTCVideoEncParam alloc] init];
    videoEncConfig.videoResolution = TRTCVideoResolution_1280_720;
    videoEncConfig.videoFps = 10;
    videoEncConfig.videoBitrate = 2000;
    // You need to replace `APPGROUP` with the App Group Identifier created earlier.
    [[TRTCCloud sharedInstance] startScreenCaptureByReplaykit:videoEncConfig
                                                     appGroup:APPGROUP];
}

// Stop screen sharing
- (void)stopScreenCapture {
    [[TRTCCloud sharedInstance] stopScreenCapture];
}

// Event notification for the start of screen sharing, which can be received through `TRTCCloudDelegate`
- (void)onScreenCaptureStarted
    [self showTip:@"Screen sharing started"];
}


// Customize a response for button tapping
- (IBAction)onScreenButtonTapped:(id)sender {
    [TRTCBroadcastExtensionLauncher launch];
}