目录

在ReplayKit live未出来之前，iOS推流屏幕信息，必须使用实际或虚拟的AirPlay模式，使用起来非常不便，自iOS 10开始，苹果在 iOS 9 的 ReplayKit 保存录屏视频的基础上，增加了视频流实时直播功能，iOS 11新增的ReplayKit2，进一步提升了Replaykit的易用性，可以对整个手机实现屏幕录制，不再局限于特定App。ReplayKit的出现，让直播更稳定、对设备性能要求低、并可直接嵌入主 app。

宿主App:被录屏的应用(对应SmartiOSScreenPublisherV2)

容器App:本身与录屏直播没有直接关系, 仅仅提供录屏App扩展的发布渠道(对应DaniuliveExtSetupUI)

录屏App扩展:实现录屏和直播的主要功能(对应DaniuliveExt)

添加扩展：File->New Target:

填写Product Name：

配置好Product Name(记得勾选”Include UI Extension”)。点”Finish”后可以看到，工程多了两个目录，target也多了两个，对应直播扩展和UI扩展：

APP内需要处理的两个扩展：

Broadcast UI Extension: 提供类似用户登录、URL设置等配置选项的界面，本实例，由于我们在DaniuliveExtSetupUI中新创建了MainInterface.storyboard，将info.plist中的：

NSExtensionPrincipalClass

BroadcastSetupViewController

换成

NSExtensionMainStoryboard

MainInterface

Broadcast Upload Extension：接收图像和音频数据, 进行直播，集成daniulive推送SDK的工作主要在Upload扩展的代码中进行，info.plist中添加音频权限：

NSMicrophoneUsageDescription

请允许使用麦克风

如需生成后台可直接启用的录制程序，info.plist中NSExtensionPointIdentifier改为：

NSExtensionPointIdentifier

com.apple.broadcast-services-upload

如需APP内部debug，查看SampleHandler里面的log，请设置为

NSExtensionPointIdentifier

com.apple.broadcast-services

导入DaniuliveSDK，对应“DaniuliveExt\daniuliveSDK”下的include和libs。

添加依赖库：

编写UI扩展（对应DaniuliveExtSetupUI）：

//Called when the user has finished interacting with the view controller and a broadcast stream can start

- (void)userDidFinishSetup {

 // Broadcast url that will be returned to the application

 NSURL *broadcastURL = [NSURL URLWithString: _rtmpUrl.text];

 // Service specific broadcast data example which will be supplied to the process extension during broadcast

 NSString *endpointURL = _rtmpUrl.text;

 NSDictionary *setupInfo = @{@"endpointURL" : endpointURL};

 // Set broadcast settings

 RPBroadcastConfiguration *broadcastConfig = [[RPBroadcastConfiguration alloc] init];

 // Tell ReplayKit that the extension is finished setting up and can begin broadcasting

 [self.extensionContext completeRequestWithBroadcastURL:broadcastURL broadcastConfiguration:broadcastConfig setupInfo:setupInfo];

}

- (void)userDidCancelSetup {

 // Tell ReplayKit that the extension was

 // cancelled by the user

 NSError * err = [NSError errorWithDomain:@"com.daniulive.ios"

                                     code:-1

                                 userInfo:nil];

 [self.extensionContext cancelRequestWithError:err];

}

SampleHandler.m调用SDK即可：

[if !supportLists]1. [endif]初始化并推送：

[self InitPublisher];

[self StartPublisher];

[if !supportLists]2. [endif]实时数据回调处理：

- (void)processSampleBuffer:(CMSampleBufferRef)sampleBuffer

                   withType:(RPSampleBufferType)sampleBufferType {

    switch (sampleBufferType) {

        case RPSampleBufferTypeVideo:

        {

            NSLog(@"RPSampleBufferTypeVideo");

            if(_smart_publisher_sdk)

            {

                [_smart_publisher_sdk SmartPublisherPostVideoSampleBuffer:sampleBuffer];

            }

        }

            break;

        case RPSampleBufferTypeAudioApp:

            NSLog(@"RPSampleBufferTypeAudioApp");

            if (s_headPhoneIn || s_isMicEnable == Mic_Disable)

            {

                if (CMSampleBufferDataIsReady(sampleBuffer) != NO)

                {

                    if(_smart_publisher_sdk)

                    {

                        NSInteger type = 2;

                        [_smart_publisher_sdk SmartPublisherPostAudioSampleBuffer:sampleBuffer inputType:type];

                    }

                }

            }

            break;

        case RPSampleBufferTypeAudioMic:

            NSLog(@"RPSampleBufferTypeAudioMic");

            if(_smart_publisher_sdk)

            {

                NSInteger type = 1;

                [_smart_publisher_sdk SmartPublisherPostAudioSampleBuffer:sampleBuffer inputType:type];

            }

            break;

        default:

            break;

    }

}

[if !supportLists]3. [endif]退出：

    [self StopPublisher];

    [self UnInitPublisher];

NOTE：集成时DaniuliveExt请使用daniulive demo里面的app-name测试，如需授权，请联系大牛直播SDK工作人员。

1. 先运行SmartiOSScreenPublisherV2，在移动端生成宿主app；

2. 再运行DaniuliveExtSetupUI，加载到宿主app；

3. 最后运行DaniuliveExt，加载到宿主app。

前台启动，设置推送的url，点击“开始推屏”：

后台启动（推屏rtmp url可在前台推送url页面设置）：

 

测试Demo可以到Github或者QQ群共享下载

Github：

CSDN Demo下载链接： 

QQ群：

大牛直播精英群: 294891451

大牛直播技术交流群: 499687479