播放器轮子制造回顾｜项目复盘（二）

/* 单双击手势反馈 */
- (void)kj_basePlayerView:(KJBasePlayerView*)view isSingleTap:(BOOL)tap;
/* 长按手势反馈 */
- (void)kj_basePlayerView:(KJBasePlayerView*)view longPress:(UILongPressGestureRecognizer*)longPress;
/* 进度手势反馈，不替换UI请返回当前时间和总时间，范围-1 ～ 1 */
- (NSArray*)kj_basePlayerView:(KJBasePlayerView*)view progress:(float)progress end:(BOOL)end;
/* 音量手势反馈，是否替换自带UI，范围0 ～ 1 */
- (BOOL)kj_basePlayerView:(KJBasePlayerView*)view volumeValue:(float)value;
/* 亮度手势反馈，是否替换自带UI，范围0 ～ 1 */
- (BOOL)kj_basePlayerView:(KJBasePlayerView*)view brightnessValue:(float)value;
/* 是否锁屏，根据KJPlayerButton的type来确定当前按钮类型 */
- (void)kj_basePlayerView:(KJBasePlayerView*)view PlayerButton:(KJPlayerButton*)button;

dbid：唯一id，视频链接去除scheme然后md5
videoUrl：视频链接  
saveTime：存储时间戳
sandboxPath：沙盒地址
videoFormat：视频格式
videoTime：视频时间
videoData：视频数据

/// 根据链接获取Asset类型
NS_INLINE KJPlayerAssetType kPlayerVideoAesstType(NSURL *url){
    if (url == nil) return KJPlayerAssetTypeNONE;
    if (url.pathExtension.length) {
        if ([url.pathExtension containsString:@"m3u8"] || [url.pathExtension containsString:@"ts"]) {
            return KJPlayerAssetTypeHLS;
        }
    }
    NSArray * array = [url.path componentsSeparatedByString:@"."];
    if (array.count == 0) {
        return KJPlayerAssetTypeNONE;
    }else{
        if ([array.lastObject containsString:@"m3u8"] || [array.lastObject containsString:@"ts"]) {
            return KJPlayerAssetTypeHLS;
        }
    }
    return KJPlayerAssetTypeFILE;
}

dispatch_group_async(group, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
    if ([weakself kj_dealVideoURL:&tempURL]) {
        if (![tempURL.absoluteString isEqualToString:self->_videoURL.absoluteString]) {
            self->_videoURL = tempURL;
            [weakself kj_initPreparePlayer];
        }else{
            [weakself kj_playerReplay];
        }
    }
});

/* 判断当前资源文件是否有缓存，修改为指定链接地址 */
- (void)kj_judgeHaveCacheWithVideoURL:(NSURL * _Nonnull __strong * _Nonnull)videoURL{
    self.locality = NO;
    KJCacheManager.kJudgeHaveCacheURL(^(BOOL locality) {
        self.locality = locality;
        if (locality) {
            self.playError = [DBPlayerDataInfo kj_errorSummarizing:KJPlayerCustomCodeCachedComplete];
        }
    }, videoURL);
}

/* 判断是否有缓存，返回缓存链接 */
+ (void(^)(void(^)(BOOL),NSURL * _Nonnull __strong * _Nonnull))kJudgeHaveCacheURL{
    return ^(void(^locality)(BOOL),NSURL * _Nonnull __strong * _Nonnull videoURL){
        NSArray<DBPlayerData*>*temps = [DBPlayerDataInfo kj_checkData:kPlayerIntactName(*videoURL)];
        BOOL boo = NO;
        if (temps.count) {
            DBPlayerData *data = temps.firstObject;
            NSString *path = data.sandboxPath;
            if (data.videoIntact && [KJCacheManager kj_haveFileSandboxPath:&path]) {
                //移出之前的临时文件
                NSString *tempPath = [path stringByAppendingPathExtension:kTempReadName];
                [[NSFileManager defaultManager] removeItemAtPath:tempPath error:NULL];
                *videoURL = [NSURL fileURLWithPath:path];
                boo = YES;
            }
        }
        kGCD_player_main(^{
            if (locality) locality(boo);
        });
    };
}

PLAYER_WEAKSELF;
if (!kPlayerHaveTracks(*videoURL, ^(AVURLAsset * asset) {
    if (weakself.useCacheFunction && !weakself.localityData) {
        weakself.state = KJPlayerStateBuffering;
        weakself.loadState = KJPlayerLoadStateNone;
        NSURL * tempURL = weakself.connection.kj_createSchemeURL(*videoURL);
        weakself.asset = [AVURLAsset URLAssetWithURL:tempURL options:weakself.requestHeader];
        [weakself.asset.resourceLoader setDelegate:weakself.connection queue:dispatch_get_main_queue()];
    }else{
        weakself.asset = asset;
    }
}, self.requestHeader)) {
    self.ecode = KJPlayerCustomCodeVideoURLFault;
    self.state = KJPlayerStateFailed;
    [self kj_destroyPlayer];
    return NO;
}

self.timeObserver = [self.player addPeriodicTimeObserverForInterval:CMTimeMakeWithSeconds(_timeSpace, NSEC_PER_SEC) queue:dispatch_queue_create("kj.player.time.queue", NULL) usingBlock:^(CMTime time) {
    NSTimeInterval sec = CMTimeGetSeconds(time);
    if (isnan(sec) || sec < 0) sec = 0;
    if (weakself.totalTime <= 0) return;
    if ((NSInteger)sec >= (NSInteger)weakself.totalTime) {
        [weakself.player pause];
        weakself.state = KJPlayerStatePlayFinished;
        weakself.currentTime = 0;
    }else if (weakself.userPause == NO && weakself.buffered) {
        weakself.state = KJPlayerStatePlaying;
        weakself.currentTime = sec;
    }
    if (sec > weakself.tryTime && weakself.tryTime) {
        [weakself kj_pause];
        if (!weakself.tryLooked) {
            weakself.tryLooked = YES;
            kGCD_player_main(^{
                if (weakself.tryTimeBlock) weakself.tryTimeBlock();
            });
        }
    }else{
        weakself.tryLooked = NO;
    }
}];