iOS：直播拉流播放：基于IJKPlayer

使用ijkplayer播放rtmp源视频，封装好的framework地址：https://pan.baidu.com/s/1P4xIK3aGYIwK0CKVMw1u3g
提取码：urx9

demo地址：https://github.com/qw9685/IJKPlayerDemo.git

源码：

//
//  ViewController.m
//  IjkPlayerDemo
//
//  Created by mac on 2019/8/11.
//  Copyright © 2019 cc. All rights reserved.
//

#import "ViewController.h"
#import <IJKMediaFramework/IJKMediaFramework.h>

#define playUrl @"rtmp://192.168.0.14:1935/rtmplive/room"

@interface ViewController ()

@property (nonatomic, strong) id <IJKMediaPlayback> player;
@property (nonatomic, strong) IJKFFOptions* options;
@property (nonatomic, strong) UIView *playerView;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    
    [self.view addSubview:self.playerView];
    
    NSURL* url = [NSURL URLWithString:playUrl];
    self.player = [[IJKFFMoviePlayerController alloc] initWithContentURL:url withOptions:self.options];

    dispatch_async(dispatch_get_main_queue(), ^{
        UIView *playerView = [_player view];
        playerView.backgroundColor = [UIColor redColor];
        [self.playerView insertSubview:playerView atIndex:1];
        [_player setScalingMode:IJKMPMovieScalingModeAspectFill];
    });

    [self.player prepareToPlay];
    [self loadVideoNoti];
}

-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
    [self.player play];
}

-(void)viewDidLayoutSubviews{
    [_player view].bounds = self.playerView.frame;
}

#pragma mark - 加载完成的方法
-(void)seekCompletedEvent:(NSNotification*)notification{
    NSLog(@"视频加载完成....");
}

#pragma mark - 视频播放器状态改变
- (void)moviePlayBackStateDidChange:(NSNotification*)notification
{
    int playbackState = _player.playbackState;
    
    switch (playbackState) {
        case IJKMPMoviePlaybackStateStopped:
            NSLog(@"播放器的播放状态变了，现在是停止状态:%d",playbackState);
            break;
        case IJKMPMoviePlaybackStatePlaying:
            NSLog(@"播放器的播放状态变了，现在是播放状态:%d",playbackState);
            break;
        case IJKMPMoviePlaybackStatePaused:
            NSLog(@"播放器的播放状态变了，现在是暂停状态:%d",playbackState);
            break;
        case IJKMPMoviePlaybackStateInterrupted:
            NSLog(@"播放器的播放状态变了，现在是中断状态:%d",playbackState);
            break;
        case IJKMPMoviePlaybackStateSeekingForward:
            NSLog(@"播放器的播放状态变了，现在是向前拖动状态:%d",playbackState);
            break;
        case IJKMPMoviePlaybackStateSeekingBackward:
            NSLog(@"播放器的播放状态变了，现在是向后拖动状态：%d",playbackState);
            break;
        default:
            NSLog(@"播放器的播放状态变了，现在是未知状态：%d",playbackState);
            break;
    }
}


#pragma mark - 播放状态改变
- (void)moviePlayBackFinish:(NSNotification*)notification
{
    int reason = [[[notification userInfo]valueForKey:IJKMPMoviePlayerPlaybackDidFinishReasonUserInfoKey] intValue];
    
    switch (reason) {
        case IJKMPMovieFinishReasonPlaybackEnded:
            NSLog(@"播放状态改变了:播放完毕的状态：%d",reason);
            break;
        case IJKMPMovieFinishReasonUserExited:
            NSLog(@"播放状态改变了:退出状态：%d",reason);
            break;
        case IJKMPMovieFinishReasonPlaybackError:
            NSLog(@"播放状态改变了:播放错误状态：%d",reason);
            break;
        default:
            break;
    }
}


#pragma mark - 更新加载状态
- (void)loadStateDidChange:(NSNotification*)notification
{
    IJKMPMovieLoadState loadState = _player.loadState;
    switch (loadState) {
        case IJKMPMovieLoadStatePlayable:
            NSLog(@"==========加载状态:缓存数据足够开始播放，但是视频并没有缓存完全");
            break;
        case IJKMPMovieLoadStateUnknown:
            NSLog(@"==========加载状态:状态");
            break;
        case IJKMPMovieLoadStatePlaythroughOK:
            NSLog(@"==========加载状态:缓存完成，可播放");
            break;
        case IJKMPMovieLoadStateStalled:
            NSLog(@"==========加载状态:缓存停止，播放停止");
            break;
            
        default:
            break;
    }
}

#pragma mark - IJKFFMoviePlayerController播放器通知
- (void)loadVideoNoti{
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(loadStateDidChange:) name:IJKMPMoviePlayerLoadStateDidChangeNotification object:_player];
    
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayBackFinish:) name:IJKMPMoviePlayerPlaybackDidFinishNotification object:_player];
    
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayBackStateDidChange:) name:IJKMPMoviePlayerPlaybackStateDidChangeNotification object:_player];
    
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(seekCompletedEvent:) name:IJKMPMoviePlayerDidSeekCompleteNotification object:_player];
}

-(UIView *)playerView{
    if (!_playerView) {
        _playerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, 300)];
    }
    return _playerView;
}

-(IJKFFOptions *)options{
    if (!_options) {
        _options = [IJKFFOptions optionsByDefault];
        //ijkplayer 播放rtmp等 实时性要求很高的 流媒体时候，会出现10S左右的延迟，原因是因为加了缓冲区处理，可以把其缓存设置变小
        [_options setOptionIntValue:1 forKey:@"infbuf" ofCategory:kIJKFFOptionCategoryPlayer];
        //最大缓存区大小
        [_options setOptionIntValue:1024 forKey:@"maxx-buffer-size" ofCategory:kIJKFFOptionCategoryPlayer];
        //ijkplayer和ffplay在打开rtmp串流视频时，大多数都会遇到5~10秒的延迟，在ffplay播放时，如果加上-fflags nobuffer可以缩短播放的rtmp视频延迟在1s内，而在IjkMediaPlayer中加入
        [_options setOptionIntValue:100L forKey:@"analyzemaxduration" ofCategory:1];
        [_options setOptionIntValue:10240L forKey:@"probesize" ofCategory:1];
        [_options setOptionIntValue:1L forKey:@"flush_packets" ofCategory:1];
        [_options setOptionIntValue:0L forKey:@"packet-buffering" ofCategory:4];
        [_options setOptionIntValue:1L forKey:@"framedrop" ofCategory:4];
    }
    return _options;
}

@end