过去学习过如何扒代码，但是不明白为什么要去扒代码，后来工作之后也是慢慢的理解了；
还有就是学习别人写好的第三方框架，过去也不知道如何使用，慢慢的发现原来是看别人的源码;
不得不说，畅不在我身边之后，所有的事都要我自己扛，看英文文档，学习第三方使用，替换pod等等~
话说，看别人的demo，通读源码让人成长的真快~
也很感谢我离开了他的帮助，这让我一直再去独立成长，但也要非常感谢他曾经给我的帮助~
闲话少说，我们看看IJKPlayer的基本用法
首先还是要去看人家的demo，ijkplayer下载连接,然后运行脚本，看看demo中的内容,比较重要的是IJKFFMoviePlayerController这个控制器，就是直接给他一个url，就可以播放了，真心非常优秀的播放框架！
白色和红色的是两个播放器
只是将小的播放器开启，大的关闭
大的和小圆都是播放器
看看源码
先要知道，白色的view叫做
MLLivePlayerCell,红色的叫做MLCatEarView
首先要知道，MLLivePlayerCell的播放器，是有声音的，并且我们做直播，最好要自己去控制他的播放时间，这要的效果比较好
#define EXPECTED_IJKPLAYER_VERSION (1 << 16) & 0xFF) |
- (void)viewDidLoad
{
[super viewDidLoad];
//先去设置一下是否打印log，有利于我们去查看信息，但是正式情况下，最好关闭打印
#ifdef DEBUG
[IJKFFMoviePlayerController setLogReport:YES];
[IJKFFMoviePlayerController setLogLevel:k_IJK_LOG_DEBUG];
#else
[IJKFFMoviePlayerController setLogReport:NO];
[IJKFFMoviePlayerController setLogLevel:k_IJK_LOG_INFO];
#endif
[IJKFFMoviePlayerController checkIfFFmpegVersionMatch:YES];
// [IJKFFMoviePlayerController checkIfPlayerVersionMatch:YES major:1 minor:0 micro:0];
//这个一定要有，options 是对数据的处理，videotoolbox解码，设置音频视频等属性，都要有这个数据
IJKFFOptions *options = [IJKFFOptions optionsByDefault];
//设置解码的方式
[options setPlayerOptionIntValue:1 forKey:@"videotoolbox"];
// 帧速率(fps) （可以改，确认非标准桢率会导致音画不同步，所以只能设定为15或者29.97）
[options setPlayerOptionIntValue:29.97 forKey:@"r"];
// -vol——设置音量大小，256为标准音量。（要设置成两倍音量时则输入512，依此类推
[options setPlayerOptionIntValue:512 forKey:@"vol"];
self.player = [[IJKFFMoviePlayerController alloc] initWithContentURL:self.url withOptions:options];
self.player.view.autoresizingMask = UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight;
self.player.view.frame = self.view.bounds;
self.player.scalingMode = IJKMPMovieScalingModeAspectFit;
//如果是直播，最好不让他自动播放，如果YES，那么就会自动播放电影，不需要通过[self.player play];就可以播放了，
//但是如果NO，我们需要注册通知，然后到响应比较合适的地方去检测通知，然后必须通过[self.player play];手动播放
self.player.shouldAutoplay = NO;
self.view.autoresizesSubviews = YES;
//player是个控制器，所以要吧他的view加载到self.view上
[self.view addSubview:self.player.view];
[self.view addSubview:self.mediaControl];
self.mediaControl.delegatePlayer = self.player;
}
注册通知，准备播放，移除通知
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
[self installMovieNotificationObservers];
[self.player prepareToPlay];
}
- (void)viewDidDisappear:(BOOL)animated {
[super viewDidDisappear:animated];
[self.player shutdown];
[self removeMovieNotificationObservers];
}
#pragma mark Install Movie Notifications
/* Register observers for the various movie object notifications. */
-(void)installMovieNotificationObservers
{
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(loadStateDidChange:)
name:IJKMPMoviePlayerLoadStateDidChangeNotification
object:_player];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(moviePlayBackDidFinish:)
name:IJKMPMoviePlayerPlaybackDidFinishNotification
object:_player];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(mediaIsPreparedToPlayDidChange:)
name:IJKMPMediaPlaybackIsPreparedToPlayDidChangeNotification
object:_player];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(moviePlayBackStateDidChange:)
name:IJKMPMoviePlayerPlaybackStateDidChangeNotification
object:_player];
}
#pragma mark Remove Movie Notification Handlers
/* Remove the movie notification observers from the movie object. */
-(void)removeMovieNotificationObservers
{
[[NSNotificationCenter defaultCenter]removeObserver:self name:IJKMPMoviePlayerLoadStateDidChangeNotification object:_player];
[[NSNotificationCenter defaultCenter]removeObserver:self name:IJKMPMoviePlayerPlaybackDidFinishNotification object:_player];
[[NSNotificationCenter defaultCenter]removeObserver:self name:IJKMPMediaPlaybackIsPreparedToPlayDidChangeNotification object:_player];
[[NSNotificationCenter defaultCenter]removeObserver:self name:IJKMPMoviePlayerPlaybackStateDidChangeNotification object:_player];
}
这个代码是
喵播的代码，这个是具体的项目中可能用到的东西,一般就注册2个通知就好了，可以监听到所需要的事情
- (void)stateDidChange
{
if ((self.moviePlayer.loadState & IJKMPMovieLoadStatePlaythroughOK) != 0) {
if (!self.moviePlayer.isPlaying) {
//监听到了改变，判断是不是没有播放，然后播放，因为之前设置的时候，『自动播放=NO』,所以要在这里去给手动播放
[self.moviePlayer play];
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
if (_placeHolderView) {
[_placeHolderView removeFromSuperview];
_placeHolderView = nil;
[self.moviePlayer.view addSubview:_renderer.view];
}
[self.parentVc hideGufLoding];
});
}else{
// 如果是网络状态不好, 断开后恢复, 也需要去掉加载
if (self.parentVc.gifView.isAnimating) {
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[self.parentVc hideGufLoding];
});
}
}
}else if (self.moviePlayer.loadState & IJKMPMovieLoadStateStalled){ // 网速不佳, 自动暂停状态
[self.parentVc showGifLoding:nil inView:self.moviePlayer.view];
}
}
- (void)didFinish
{
NSLog(@"加载状态...%ld %ld %s", self.moviePlayer.loadState, self.moviePlayer.playbackState, __func__);
// 因为网速或者其他原因导致直播stop了, 也要显示GIF
if (self.moviePlayer.loadState & IJKMPMovieLoadStateStalled && !self.parentVc.gifView) {
[self.parentVc showGifLoding:nil inView:self.moviePlayer.view];
return;
}
// 方法：
// 1、重新获取直播地址，服务端控制是否有地址返回。
// 2、用户http请求该地址，若请求成功表示直播未结束，否则结束
__weak typeof(self)weakSelf = self;
[[ALinNetworkTool shareTool] GET:self.live.flv parameters:nil progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) {
NSLog(@"请求成功%@, 等待继续播放", responseObject);
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
NSLog(@"请求失败, 加载失败界面, 关闭播放器%@", error);
[weakSelf.moviePlayer shutdown];
[weakSelf.moviePlayer.view removeFromSuperview];
weakSelf.moviePlayer = nil;
weakSelf.endView.hidden = NO;
}];
}
self.moviePlayer.loadState & IJKMPMovieLoadStatePlaythroughOK这个代码，是与，请参考这个文档，位运算和枚举,我就不赘述了~
切记，就是我们在结束的时候，
viewWillDisappear中，设置[self.player shutdown],停止播放和self.player = nil，移除播放器操作
看看MLCatEarView中的设置
这个view中要去静音（业务需求）,然后我们去设置代码
@interface MLCatEarView ()
@property(nonatomic,strong)IJKFFMoviePlayerController *moviePlayer;
@end
@implementation MLCatEarView
- (instancetype)initWithFrame:(CGRect)frame{
if (self = [super initWithFrame:frame]) {
self.backgroundColor = [UIColor redColor];
self.layer.cornerRadius = 100*0.5;
self.layer.masksToBounds = YES;
}
return self;
}
- (void)setLiveM:(MLLiveModel *)liveM{
_liveM = liveM;
IJKFFOptions *option = [IJKFFOptions optionsByDefault];
//静音设置
[option setPlayerOptionValue:@"1" forKey:@"an"];
// 开启硬解码
[option setPlayerOptionValue:@"1" forKey:@"videotoolbox"];
IJKFFMoviePlayerController *moviePlayer = [[IJKFFMoviePlayerController alloc] initWithContentURLString:liveM.flv withOptions:option];
self.moviePlayer = moviePlayer;
[self addSubview:self.moviePlayer.view];
self.moviePlayer.view.frame = self.bounds;
self.moviePlayer.scalingMode = IJKMPMovieScalingModeAspectFill;
//这里是自动播放，所以就没有[self.player play]这句话~
self.moviePlayer.shouldAutoplay = YES;
[self.moviePlayer prepareToPlay];
}
- (void)removeFromSuperview
{
if (_moviePlayer) {
[_moviePlayer shutdown];
[_moviePlayer.view removeFromSuperview];
_moviePlayer = nil;
}
[super removeFromSuperview];
}
就这样写完了，有机会还是要看看源码，这样对自己的提升还是很大的，过去我学习一个框架，就是别人的博客，但是相比看源码，理解的还是有些偏差~
