How to cache audio in local mode when playing audio using avplayer

Question

I am playing audio on the Internet using AVPlayer and want to save the data / audio stream to local when avplayer finishes downloading the stream.

I implement it as the following:

    let fileUrl =  NSURL(string: strUrl)!
    let asset = AVURLAsset(URL: fileUrl)
    asset.resourceLoader.setDelegate(self, queue:dispatch_queue_create("AVARLDelegateDemo loader", nil))
    self.pendingRequests = [AVAssetResourceLoadingRequest]()

    asset.loadValuesAsynchronouslyForKeys(["playable"]){
        dispatch_async( dispatch_get_main_queue()){
            self.prepareToPlayAsset(asset, requestedKeys: ["playable"])
        }
    }


  func resourceLoader(resourceLoader: AVAssetResourceLoader, shouldWaitForLoadingOfRequestedResource loadingRequest: AVAssetResourceLoadingRequest) -> Bool {
    .......
    return false
}

When the URL is http / https , it does not call resourceLoader (resourceLoader: AVAssetResourceLoader, shouldWaitForLoadingOfRequestedResource .... - when the URL is configured (for example: test '), it calls resourceLoader (resourceLoader: AVAssetResourceLoader, shouldWaitForLoadingOfRequested

Who knows the reason, does resourceLoader not support http / https?

Answer 1

, , resourceLoader(resourceLoader: AVAssetResourceLoader, shouldWaitForLoadingOfRequestedResource.... , URL-, , URL-.

Answer 2

, , , .

URL- AVAssetResourceLoaderDelegate . :

NSURL *url = [NSURL URLWithString:@"customscheme://host/audio.mp3"];
AVURLAsset *asset = [AVURLAsset URLAssetWithURL:url options:nil];
[asset.resourceLoader setDelegate:self queue:dispatch_get_main_queue()];

AVPlayerItem *item = [AVPlayerItem playerItemWithAsset:asset];
[self addObserversForPlayerItem:item];

self.player = [AVPlayer playerWithPlayerItem:playerItem];
[self addObserversForPlayer];

:

- (BOOL)resourceLoader:(AVAssetResourceLoader *)resourceLoader shouldWaitForLoadingOfRequestedResource:(AVAssetResourceLoadingRequest*)loadingRequest{

    NSURL *resourceURL = [loadingRequest.request URL];

    if([resourceURL.scheme isEqualToString:@"customscheme"]){
        LSFilePlayerResourceLoader *loader = [self resourceLoaderForRequest:loadingRequest];

        if(loader==nil){
            loader = [[LSFilePlayerResourceLoader alloc] initWithResourceURL:resourceURL session:self.session];
            loader.delegate = self;
            [self.resourceLoaders setObject:loader forKey:[self keyForResourceLoaderWithURL:resourceURL]];
        }

        [loader addRequest:loadingRequest];

        return YES;
    }
    return NO;
}

- (void)resourceLoader:(AVAssetResourceLoader *)resourceLoader didCancelLoadingRequest:(AVAssetResourceLoadingRequest *)loadingRequest{

    LSFilePlayerResourceLoader *loader = [self resourceLoaderForRequest:loadingRequest];

    [loader removeRequest:loadingRequest];
}

LSFilePlayerResourceLoader LSFilePlayerResourceLoader ( ).

Answer 3

Swift AVPlayerItem .