LFLiveKit(https://github.com/LaiFengiOS/LFLiveKit)

LFLiveKit IOS mobile phone push code，Default format support RTMP and FLV，At the same time, the structure is very easy to extend.

Podfile To integrate LFLiveKit into your Xcode project using CocoaPods, specify it in your Podfile:

source 'https://github.com/CocoaPods/Specs.git'
platform :ios, '8.0'
pod 'LFLiveKit'

Then, run the following command:
$ pod install

Functional

Background recording
Support horizontal vertical recording
GPUImage Beauty
H264 Hard coding
AAC Hard coding
Weak network lost frame
Dynamic switching rate
Audio configuration
Video configuration
RTMP Transport
Switch camera
Audio Mute
Support Send Buffer
FLV package and send

Architecture

capture: LFAudioCapture and  LFVideoCapture
encode:  LFHardwareAudioEncoder and LFHardwareVideoEncoder
publish: LFStreamRtmpSocket LFStreamTcpSocket

Usage

- (LFLiveSession*)session{
    if(!_session){
        _session = [[LFLiveSession alloc] initWithAudioConfiguration:[LFLiveAudioConfiguration defaultConfiguration] videoConfiguration:[LFLiveVideoConfiguration defaultConfiguration] liveType:LFLiveRTMP];
        _session.running = YES;
        _session.preView = self;
        }
    return _session;
}

- (LFLiveSession*)session{
    if(!_session){
        LFLiveAudioConfiguration *audioConfiguration = [LFLiveAudioConfiguration new];
        audioConfiguration.numberOfChannels = 2;
        audioConfiguration.audioBitrate = LFLiveAudioBitRate_128Kbps;
        audioConfiguration.audioSampleRate = LFLiveAudioSampleRate_44100Hz;

        LFLiveVideoConfiguration *videoConfiguration = [LFLiveVideoConfiguration new];
        videoConfiguration.videoSize = CGSizeMake(1280, 720);
        videoConfiguration.videoBitRate = 800*1024;
        videoConfiguration.videoMaxBitRate = 1000*1024;
        videoConfiguration.videoMinBitRate = 500*1024;
        videoConfiguration.videoFrameRate = 15;
        videoConfiguration.videoMaxKeyframeInterval = 30;
        videoConfiguration.orientation = UIInterfaceOrientationLandscapeLeft;
        videoConfiguration.sessionPreset = LFCaptureSessionPreset720x1280;

        _session = [[LFLiveSession alloc] initWithAudioConfiguration:audioConfiguration 				videoConfiguration:videoConfiguration liveType:LFLiveRTMP];
        _session.running = YES;
        _session.preView = self;
    }
    return _session;
}

LFLiveStreamInfo *streamInfo = [LFLiveStreamInfo new];
streamInfo.url = @"your server rtmp url";
[self.session startLive:streamInfo];
[self.session stopLive];

CallBack:

- (void)liveSession:(nullable LFLiveSession *)session liveStateDidChange: (LFLiveState)state;
- (void)liveSession:(nullable LFLiveSession *)session debugInfo:(nullable LFLiveDebug*)debugInfo;
- (void)liveSession:(nullable LFLiveSession*)session errorCode:(LFLiveSocketErrorCode)errorCode;

License

LFLiveKit is released under the MIT license. See LICENSE for details.

################ 前引：目前直播包含采集端与播放端，播放端目前开源比较好用的是bilibili播放器，网址为https://github.com/Bilibili/ijkplayer，支持了很多的格式，其中包含了RTMP格式，非常的👍

起因：我这里处理的是音视频采集端，目前开源社区比较火的是LiveVideoCoreSDK（https://github.com/search?utf8=✓&q=LiveVideoCore&type=Repositories&ref=searchresults），其中借鉴了videoCore（https://github.com/jgh-/VideoCore），这个外国人写的，但无奈都是C++，ios采集这边目前一般都是SDK，当前我也是借鉴了很多的SDK与VideoCore，写了目前这个LMLiveStreaming。

架构：分为采集－－－>编码--->打包上传 我这边为了更好的扩展，在编码打包以及上传这几个模块通过协议抽象了相关的方法，在滤镜方面用的GPUImage，美颜大家可以参考BeautifyFaceDemo（https://github.com/Guikunzhi/BeautifyFaceDemo）

服务器搭建： 对于初学直播的同学没有RTMP服务器还真。。。，这里简单介绍一下RTMP＋nginx服务器。 首先下载nginx源码，去nginx.org下载，其次下载nginx-rtmp-module-master（https://github.com/arut/nginx-rtmp-module）代码，再去下载openssl（openssl.org），然后修改openssl makefile，将PLATFORM=dist改为PLATFORM=darwin64-x86_64-cc，然后cd到nginx源码目录，执行export KERNEL_BITS=64 然后再执行./configure --add-module= nginx-rtmp-module-masterde的路径 --with-openssl= oepnssl源码路径，然后make install.最后查找nginx.conf默认只支持http，添加下面代码再次启动就好了。

rtmp {
    server {
            listen 1935;

        #点播配置
                application vod {
                    play /opt/media/nginxrtmp/flv;
                }
        
        #直播流配置
            application live {
                    live on;
            #为 rtmp 引擎设置最大连接数。默认为 off
            max_connections 1024;

                    # default recorder
                    record all;
                    record_path /var/rec;
 
                    recorder audio {
                         record audio;
                         record_suffix -%d-%b-%y-%T.flv;
                    } 

                    recorder chunked {
                        record all;
                         record_interval 15s;
                         record_path /var/rec/chunked;
                    }

            #on_publish http://localhost:8080/publish;  
            #on_play http://localhost:8080/play;  
            #on_record_done http://localhost:8080/record_done;
            
            #rtmp日志设置
             #access_log logs/rtmp_access.log new;
             #access_log logs/rtmp_access.log;
             #access_log off;

             }
        
        #HLS协议支持
        #application hls {  
            #live on;  
            #hls on;  
            #hls_path /tmp/app;  
            #hls_fragment 5s;  
        #} 

            application hls{
        
                    live on;
                    hls on;
                    hls_path /usr/local/nginx/html/app;
                    hls_fragment 1s;
            }
 

    }
}