iOS開發-基於LFLiveKit作一個簡單的推流demo

時間  2019-11-29
標籤 ios 開發 基於 lflivekit 一個 簡單 demo 欄目 iOS 简体版
原文   原文鏈接

首先先從github上pod下來LFLiveKitgit

新建OnlyLiveSession類：主要用於管理直播的類 .hgithub

#import <UIKit/UIKit.h>

@protocol OnlyLiveSessionDelegate <NSObject>
// 返回的message
- (void)OnlyLiveCallBackMessage:(NSString *)callBackMessage;

@end

@interface OnlyLiveSession : NSObject
// 是否正在直播
@property (assign, nonatomic,readonly)  BOOL isPlaying;
//  傳入代理和須要展現的父視圖
- (instancetype)initWithDefaultSessionWithdelegate:(id<OnlyLiveSessionDelegate>)delegate preView:(UIView *)preView;
// 根據須要推流的地址(rtmp地址)
- (void)startLiveWithStreamString:(NSString *)streamString;
// 中止直播
- (void)stopLive;
// 攝像頭翻轉
- (void)resetCamera;

@end
複製代碼

.mbash

#import "OnlyLiveSession.h"
#import <LFLiveKit.h>

inline static NSString *formatedSpeed(float bytes, float elapsed_milli) {
    if (elapsed_milli <= 0) {
        return @"N/A";
    }
    
    if (bytes <= 0) {
        return @"0 KB/s";
    }
    
    float bytes_per_sec = ((float)bytes) * 1000.f /  elapsed_milli;
    if (bytes_per_sec >= 1000 * 1000) {
        return [NSString stringWithFormat:@"%.2f MB/s", ((float)bytes_per_sec) / 1000 / 1000];
    } else if (bytes_per_sec >= 1000) {
        return [NSString stringWithFormat:@"%.1f KB/s", ((float)bytes_per_sec) / 1000];
    } else {
        return [NSString stringWithFormat:@"%ld B/s", (long)bytes_per_sec];
    }
}


@interface OnlyLiveSession()<LFLiveSessionDelegate>

@property (assign, nonatomic)  BOOL isPlaying;
@property (strong, nonatomic)  LFLiveSession *session;
@property (weak, nonatomic)  id delegate;


@end

@implementation OnlyLiveSession

- (instancetype)initWithDefaultSessionWithdelegate:(id<OnlyLiveSessionDelegate>)delegate preView:(UIView*)preView{
    self = [super init];
    if (self) {
        [self setDefaultSessionWithdelegate:(id<OnlyLiveSessionDelegate>)delegate preView:(UIView*)preView];
    }
    return self;
    
}


#pragma mark - 開始播放 streamString:推流地址
- (void)startLiveWithStreamString:(NSString *)streamString{
    
    if (!self.session && streamString.length > 0) {
        @throw @"須要建立一個默認的session or 須要一個播放streamString";
        return;
    }
    NSLog(@"當前的streamString:%@",streamString);
    LFLiveStreamInfo *info = [LFLiveStreamInfo new];
    info.url = streamString;
    [self.session startLive:info];
    
}
#pragma mark - 中止播放
- (void)stopLive
{
    [_session stopLive];
}
#pragma mark - 攝像頭翻轉

- (void)resetCamera{
    AVCaptureDevicePosition devicePositon = self.session.captureDevicePosition;
    self.session.captureDevicePosition = (devicePositon == AVCaptureDevicePositionBack) ? AVCaptureDevicePositionFront : AVCaptureDevicePositionBack;
    
}
#pragma mark - 設置默認的Session
- (void)setDefaultSessionWithdelegate:(id<OnlyLiveSessionDelegate>)delegate preView:(UIView*)preView{
    if (!_session) {
        self.delegate = delegate;
        /***   默認分辨率368 ＊ 640  音頻：44.1 iphone6以上48  雙聲道  方向豎屏 ***/
        LFLiveVideoConfiguration *videoConfiguration = [LFLiveVideoConfiguration new];
        videoConfiguration.videoSize = CGSizeMake(preView.bounds.size.width, preView.bounds.size.height);
        videoConfiguration.videoBitRate = 800*1024;
        videoConfiguration.videoMaxBitRate = 1000*1024;
        videoConfiguration.videoMinBitRate = 500*1024;
        videoConfiguration.videoFrameRate = 24;
        videoConfiguration.videoMaxKeyframeInterval = 48;
        videoConfiguration.outputImageOrientation = UIInterfaceOrientationPortrait;
        videoConfiguration.autorotate = NO;
        videoConfiguration.sessionPreset = LFCaptureSessionPreset720x1280;
        _session = [[LFLiveSession alloc] initWithAudioConfiguration:[LFLiveAudioConfiguration defaultConfiguration] videoConfiguration:videoConfiguration captureType:LFLiveCaptureDefaultMask];
        _session.delegate = self;
        _session.preView = preView;
    }
    [self requestAccessForAudio];
    [self requestAccessForVideo];
}

#pragma mark -- LFStreamingSessionDelegate
/** live status changed will callback */
- (void)liveSession:(nullable LFLiveSession *)session liveStateDidChange:(LFLiveState)state {
    NSLog(@"liveStateDidChange: %ld", state);
    NSString *needCallBackMessage;
    switch (state) {
        case LFLiveReady:
            needCallBackMessage = @"未鏈接";
            self.isPlaying = NO;
            break;
        case LFLivePending:
            needCallBackMessage = @"鏈接中";
            break;
        case LFLiveStart:
            self.isPlaying = YES;
            needCallBackMessage = @"已鏈接";
            break;
        case LFLiveError:
            needCallBackMessage = @"鏈接錯誤";
            self.isPlaying = NO;
            break;
        case LFLiveStop:
            needCallBackMessage = @"未鏈接";
            self.isPlaying = NO;
            break;
        default:
            needCallBackMessage = @"未知";
            break;
    }
    if ([self.delegate respondsToSelector:@selector(OnlyLiveCallBackMessage:)]) {
        [self.delegate OnlyLiveCallBackMessage:needCallBackMessage];
    }
}

/** live debug info callback */
- (void)liveSession:(nullable LFLiveSession *)session debugInfo:(nullable LFLiveDebug *)debugInfo {
    NSLog(@"debugInfo uploadSpeed: %@", formatedSpeed(debugInfo.currentBandwidth, debugInfo.elapsedMilli));
}

/** callback socket errorcode */
- (void)liveSession:(nullable LFLiveSession *)session errorCode:(LFLiveSocketErrorCode)errorCode {
    self.isPlaying = NO;
    NSLog(@"errorCode: %ld", errorCode);
}

#pragma mark -- Public Method
// 請求video權限
- (void)requestAccessForVideo {
    __weak typeof(self) _self = self;
    AVAuthorizationStatus status = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
    switch (status) {
        case AVAuthorizationStatusNotDetermined: {
            // 許可對話沒有出現，發起受權許可
            [AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo completionHandler:^(BOOL granted) {
                if (granted) {
                    dispatch_async(dispatch_get_main_queue(), ^{
                        [_self.session setRunning:YES];
                    });
                }
            }];
            break;
        }
        case AVAuthorizationStatusAuthorized: {
            // 已經開啓受權，可繼續
            dispatch_async(dispatch_get_main_queue(), ^{
                [_self.session setRunning:YES];
            });
            break;
        }
        case AVAuthorizationStatusDenied:
        case AVAuthorizationStatusRestricted:
            // 用戶明確地拒絕受權，或者相機設備沒法訪問
            
            break;
        default:
            break;
    }
}
// 請求Audio權限
- (void)requestAccessForAudio {
    AVAuthorizationStatus status = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeAudio];
    switch (status) {
        case AVAuthorizationStatusNotDetermined: {
            [AVCaptureDevice requestAccessForMediaType:AVMediaTypeAudio completionHandler:^(BOOL granted) {
            }];
            break;
        }
        case AVAuthorizationStatusAuthorized: {
            break;
        }
        case AVAuthorizationStatusDenied:
        case AVAuthorizationStatusRestricted:
            break;
        default:
            break;
    }
}

#pragma mark - delloc
- (void)dealloc
{
    _session ? _session = nil :nil;
}

@end
複製代碼

須要承載直播視圖的preview(主要封裝UI視圖)session

.h
#import <UIKit/UIKit.h>

typedef NS_ENUM(NSInteger, OnlyLiveViewClick) {
    OnlyLiveViewClickStart = 101, //
    OnlyLiveViewClickStop = 102, //
    OnlyLiveViewClickResetCamera = 103,
    OnlyLiveViewClickBeauty = 104,
    OnlyLiveViewClickClose = 105,
};

// view不一樣點擊的回調
typedef void (^OnlyLiveViewClickCompletion)(OnlyLiveViewClick Click);

@interface OnlyLiveView : UIView

-(instancetype)initWithFrame:(CGRect)frame completion:(OnlyLiveViewClickCompletion)completion;
// 更新OnlyLiveView的UI信息
- (void)updateOnlyLiveVieWithMessage:(NSString *)message;

@end
複製代碼

.miphone

#import "OnlyLiveView.h"
#import "UIControl+YYAdd.h"
#import "UIView+YYAdd.h"

@interface OnlyLiveView()

@property (nonatomic, strong) UIButton *beautyButton;
@property (nonatomic, strong) UIButton *cameraButton;
@property (nonatomic, strong) UIButton *closeButton;
@property (nonatomic, strong) UIButton *startLiveButton;
@property (nonatomic, strong) UIView *containerView;
@property (nonatomic, strong) UILabel *stateLabel;
@property (nonatomic, strong) OnlyLiveViewClickCompletion liveCompletion;


@end

@implementation OnlyLiveView


- (void)updateOnlyLiveVieWithMessage:(NSString *)message
{
    self.stateLabel.text = message;
}



- (void)OnlyLiveViewClick:(UIButton *)sender{
    self.liveCompletion(sender.tag);
}
- (void)startLiveButtonClick:(UIButton*)sender{
    
    self.startLiveButton.selected = !self.startLiveButton.selected;
    if (!self.startLiveButton.selected) {
        [self.startLiveButton setTitle:@"開始直播" forState:UIControlStateNormal];
        self.liveCompletion(OnlyLiveViewClickStop);
    } else {
        [self.startLiveButton setTitle:@"結束直播" forState:UIControlStateNormal];
        self.liveCompletion(OnlyLiveViewClickStart);
    }
}

-(instancetype)initWithFrame:(CGRect)frame completion:(OnlyLiveViewClickCompletion)completion
{
    if (self = [super initWithFrame:frame]) {
        self.liveCompletion = completion;
        self.backgroundColor = [UIColor clearColor];
        [self addSubview:self.containerView];
        [self.containerView addSubview:self.stateLabel];
        [self.containerView addSubview:self.closeButton];
        [self.containerView addSubview:self.cameraButton];
        [self.containerView addSubview:self.beautyButton];
        [self.containerView addSubview:self.startLiveButton];
    }
    return self;
    
}

- (instancetype)initWithFrame:(CGRect)frame {
    if (self = [super initWithFrame:frame]) {
        self.backgroundColor = [UIColor clearColor];
        [self addSubview:self.containerView];
        [self.containerView addSubview:self.stateLabel];
        [self.containerView addSubview:self.closeButton];
        [self.containerView addSubview:self.cameraButton];
        [self.containerView addSubview:self.beautyButton];
        [self.containerView addSubview:self.startLiveButton];
    }
    return self;
}

- (UIView *)containerView {
    if (!_containerView) {
        _containerView = [UIView new];
        _containerView.frame = self.bounds;
        _containerView.backgroundColor = [UIColor clearColor];
        _containerView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
    }
    return _containerView;
}

- (UILabel *)stateLabel {
    if (!_stateLabel) {
        _stateLabel = [[UILabel alloc] initWithFrame:CGRectMake(20, 20, 80, 40)];
        _stateLabel.text = @"未鏈接";
        _stateLabel.textColor = [UIColor whiteColor];
        _stateLabel.font = [UIFont boldSystemFontOfSize:14.f];
    }
    return _stateLabel;
}

- (UIButton *)closeButton {
    if (!_closeButton) {
        _closeButton = [UIButton new];
        _closeButton.tag = OnlyLiveViewClickClose;
        _closeButton.size = CGSizeMake(44, 44);
        _closeButton.left = self.width - 10 - _closeButton.width;
        _closeButton.top = 20;
        [_closeButton setImage:[UIImage imageNamed:@"close_preview"] forState:UIControlStateNormal];
        _closeButton.exclusiveTouch = YES;
        [_closeButton addTarget:self action:@selector(OnlyLiveViewClick:) forControlEvents:UIControlEventTouchUpInside];
    }
    return _closeButton;
}

- (UIButton *)cameraButton {
    if (!_cameraButton) {
        _cameraButton = [UIButton new];
        _cameraButton.tag = OnlyLiveViewClickResetCamera;
        _cameraButton.size = CGSizeMake(44, 44);
        _cameraButton.origin = CGPointMake(_closeButton.left - 10 - _cameraButton.width, 20);
        [_cameraButton setImage:[UIImage imageNamed:@"camra_preview"] forState:UIControlStateNormal];
        _cameraButton.exclusiveTouch = YES;
        [_cameraButton addTarget:self action:@selector(OnlyLiveViewClick:) forControlEvents:UIControlEventTouchUpInside];
        
    }
    return _cameraButton;
}

- (UIButton *)beautyButton {
    if (!_beautyButton) {
        _beautyButton = [UIButton new];
        _beautyButton.tag = OnlyLiveViewClickBeauty;
        _beautyButton.size = CGSizeMake(44, 44);
        _beautyButton.origin = CGPointMake(_cameraButton.left - 10 - _beautyButton.width, 20);
        [_beautyButton setImage:[UIImage imageNamed:@"camra_beauty"] forState:UIControlStateNormal];
        [_beautyButton setImage:[UIImage imageNamed:@"camra_beauty_close"] forState:UIControlStateSelected];
        _beautyButton.exclusiveTouch = YES;
        [_beautyButton addTarget:self action:@selector(OnlyLiveViewClick:) forControlEvents:UIControlEventTouchUpInside];
    }
    return _beautyButton;
}

- (UIButton *)startLiveButton {
    if (!_startLiveButton) {
        _startLiveButton = [UIButton new];
        _startLiveButton.size = CGSizeMake(self.width - 60, 44);
        _startLiveButton.left = 30;
        _startLiveButton.bottom = self.height - 50;
        _startLiveButton.layer.cornerRadius = _startLiveButton.height/2;
        [_startLiveButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
        [_startLiveButton.titleLabel setFont:[UIFont systemFontOfSize:16]];
        [_startLiveButton setTitle:@"開始直播" forState:UIControlStateNormal];
        [_startLiveButton setBackgroundColor:[UIColor colorWithRed:50 green:32 blue:245 alpha:1]];
        _startLiveButton.exclusiveTouch = YES;
        [_startLiveButton addTarget:self action:@selector(startLiveButtonClick:) forControlEvents:UIControlEventTouchUpInside];
    }
    return _startLiveButton;
}


@end
複製代碼

上面已經建立好了直播的控制類，直播的展現view，而後構建你的直播控制器 直接上.msocket

#import "ViewController.h"
#import <LFLiveKit.h>
#import "OnlyLiveView.h"
#import "OnlyCommonDefine.h"
#import "OnlyLiveSession.h"
@interface ViewController ()<OnlyLiveSessionDelegate>

@property (strong, nonatomic)  LFLiveSession *session;
@property (strong, nonatomic)  OnlyLiveSession *onlyLiveSession;
@property (strong, nonatomic)  OnlyLiveView *liveView;




@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    
    OnlyLiveView *liveView = [[OnlyLiveView alloc]initWithFrame:CGRectMake(0, 0, kScreenWidth, kScreenHeight) completion:^(OnlyLiveViewClick Click) {
        [self doSomeThingWithOnlyLiveViewClick:(OnlyLiveViewClick)Click];
    }];
    self.liveView = liveView;
    [self.view addSubview:liveView];
    
    OnlyLiveSession *onlyLiveSession = [[OnlyLiveSession alloc]initWithDefaultSessionWithdelegate:self preView:liveView];
    self.onlyLiveSession = onlyLiveSession;
    
}

#pragma mark - OnlyLiveSessionDelegate

- (void)OnlyLiveCallBackMessage:(NSString *)callBackMessage
{
    [self.liveView updateOnlyLiveVieWithMessage:callBackMessage];
}

- (void)doSomeThingWithOnlyLiveViewClick:(OnlyLiveViewClick)Click{
    switch (Click) {
        case OnlyLiveViewClickStart:{
            [self onlyLiveSessionStartLive];
        }
            break;
        case OnlyLiveViewClickStop:{
            [self.onlyLiveSession stopLive];
        }
            break;
        case OnlyLiveViewClickResetCamera:
            [self.onlyLiveSession resetCamera];
            break;
        case OnlyLiveViewClickBeauty:
            break;
        case OnlyLiveViewClickClose:
            break;
        default:
            break;
    }
    
}

- (void)onlyLiveSessionStartLive{
    
    NSString * uuidStr =[[[UIDevice currentDevice] identifierForVendor] UUIDString];
    NSString *devCode  = [[uuidStr substringToIndex:3] lowercaseString];
    NSString *streamSrv = @"你的rtmp直播地址";
    NSString *streamString = [NSString stringWithFormat:@"%@/%@", streamSrv, devCode];
    [self.onlyLiveSession startLiveWithStreamString:streamString];
    
}
@end
複製代碼

下面運行demo你就能夠看到下邊的效果~ async

點擊開始直播就能夠開始你開心的直播之旅了~ 固然你須要一個能夠播放rtmp的播放器推薦使用VLC 看到的畫面 ide

demo地址~ 推流demoui

下一步會作貼圖的功能~atom

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