Java 类com.google.android.exoplayer.upstream.UriLoadable 实例源码

/**
 * @param manifestUri The manifest location.
 * @param uriDataSource The {@link UriDataSource} to use when loading the manifest.
 * @param parser A parser to parse the loaded manifest data.
 * @param eventHandler A handler to use when delivering events to {@code eventListener}. May be
 *     null if delivery of events is not required.
 * @param eventListener A listener of events. May be null if delivery of events is not required.
 */
public ManifestFetcher(String manifestUri, UriDataSource uriDataSource,
    UriLoadable.Parser<T> parser, Handler eventHandler, EventListener eventListener) {
  this.parser = parser;
  this.manifestUri = manifestUri;
  this.uriDataSource = uriDataSource;
  this.eventHandler = eventHandler;
  this.eventListener = eventListener;
}

public SingleFetchHelper(UriLoadable<T> singleUseLoadable, Looper callbackLooper,
    ManifestCallback<T> wrappedCallback) {
  this.singleUseLoadable = singleUseLoadable;
  this.callbackLooper = callbackLooper;
  this.wrappedCallback = wrappedCallback;
  singleUseLoader = new Loader("manifestLoader:single");
}

/**
 * Loads a manifest.
 *
 * @param context A context.
 * @param tag A tag to use for logging.
 * @param url The manifest url.
 * @param parser A suitable parser for the manifest.
 * @return The parser manifest.
 * @throws IOException If an error occurs loading the manifest.
 */
public static <T> T loadManifest(Context context, String tag, String url,
    UriLoadable.Parser<T> parser) throws IOException {
  String userAgent = getUserAgent(context);
  int retryCount = 0;
  while (true) {
    try {
      DefaultUriDataSource manifestDataSource = new DefaultUriDataSource(context, userAgent);
      ManifestFetcher<T> manifestFetcher = new ManifestFetcher<>(url, manifestDataSource, parser);
      SyncManifestCallback<T> callback = new SyncManifestCallback<>();
      manifestFetcher.singleLoad(context.getMainLooper(), callback);
      return callback.getResult();
    } catch (IOException e) {
      if (retryCount++ < MANIFEST_LOAD_MAX_RETRY_COUNT) {
        // Sleep, then try again.
        Log.e(tag, "Failed to load manifest", e);
        try {
          Thread.sleep(5000);
        } catch (InterruptedException e2) {
          // Never happens.
          throw new InterruptedIOException();
        }
      } else {
        // Give up.
        throw e;
      }
    }
  }
}

/**
 * @param manifestUri The manifest location.
 * @param uriDataSource The {@link UriDataSource} to use when loading the manifest.
 * @param parser A parser to parse the loaded manifest data.
 * @param eventHandler A handler to use when delivering events to {@code eventListener}. May be
 *     null if delivery of events is not required.
 * @param eventListener A listener of events. May be null if delivery of events is not required.
 */
public ManifestFetcher(String manifestUri, UriDataSource uriDataSource,
    UriLoadable.Parser<T> parser, Handler eventHandler, EventListener eventListener) {
  this.parser = parser;
  this.manifestUri = manifestUri;
  this.uriDataSource = uriDataSource;
  this.eventHandler = eventHandler;
  this.eventListener = eventListener;
}

public SingleFetchHelper(UriLoadable<T> singleUseLoadable, Looper callbackLooper,
    ManifestCallback<T> wrappedCallback) {
  this.singleUseLoadable = singleUseLoadable;
  this.callbackLooper = callbackLooper;
  this.wrappedCallback = wrappedCallback;
  singleUseLoader = new Loader("manifestLoader:single");
}

/**
 * @param manifestUri The manifest location.
 * @param uriDataSource The {@link UriDataSource} to use when loading the manifest.
 * @param parser A parser to parse the loaded manifest data.
 * @param eventHandler A handler to use when delivering events to {@code eventListener}. May be
 *     null if delivery of events is not required.
 * @param eventListener A listener of events. May be null if delivery of events is not required.
 */
public ManifestFetcher(String manifestUri, UriDataSource uriDataSource,
    UriLoadable.Parser<T> parser, Handler eventHandler, EventListener eventListener) {
  this.parser = parser;
  this.manifestUri = manifestUri;
  this.uriDataSource = uriDataSource;
  this.eventHandler = eventHandler;
  this.eventListener = eventListener;
}

public SingleFetchHelper(UriLoadable<T> singleUseLoadable, Looper callbackLooper,
    ManifestCallback<T> wrappedCallback) {
  this.singleUseLoadable = singleUseLoadable;
  this.callbackLooper = callbackLooper;
  this.wrappedCallback = wrappedCallback;
  singleUseLoader = new Loader("manifestLoader:single");
}

private void resolveHttp(UriLoadable.Parser<Long> parser) {
  singleUseLoader = new Loader("utctiming");
  singleUseLoadable = new UriLoadable<>(timingElement.value, uriDataSource, parser);
  singleUseLoader.startLoading(singleUseLoadable, this);
}

private void resolveHttp(UriLoadable.Parser<Long> parser) {
  singleUseLoader = new Loader("utctiming");
  singleUseLoadable = new UriLoadable<>(timingElement.value, uriDataSource, parser);
  singleUseLoader.startLoading(singleUseLoadable, this);
}

private void resolveHttp(UriLoadable.Parser<Long> parser) {
  singleUseLoader = new Loader("utctiming");
  singleUseLoadable = new UriLoadable<>(timingElement.value, uriDataSource, parser);
  singleUseLoader.startLoading(singleUseLoadable, this);
}

/**
 * @param manifestUri The manifest location.
 * @param uriDataSource The {@link UriDataSource} to use when loading the manifest.
 * @param parser A parser to parse the loaded manifest data.
 */
public ManifestFetcher(String manifestUri, UriDataSource uriDataSource,
    UriLoadable.Parser<T> parser) {
  this(manifestUri, uriDataSource, parser, null, null);
}

/**
 * Performs a single manifest load.
 *
 * @param callbackLooper The looper associated with the thread on which the callback should be
 *     invoked.
 * @param callback The callback to receive the result.
 */
public void singleLoad(Looper callbackLooper, final ManifestCallback<T> callback) {
  SingleFetchHelper fetchHelper = new SingleFetchHelper(
      new UriLoadable<>(manifestUri, uriDataSource, parser), callbackLooper, callback);
  fetchHelper.startLoading();
}

/**
 * @param manifestUri The manifest location.
 * @param uriDataSource The {@link UriDataSource} to use when loading the manifest.
 * @param parser A parser to parse the loaded manifest data.
 */
public ManifestFetcher(String manifestUri, UriDataSource uriDataSource,
    UriLoadable.Parser<T> parser) {
  this(manifestUri, uriDataSource, parser, null, null);
}

/**
 * Performs a single manifest load.
 *
 * @param callbackLooper The looper associated with the thread on which the callback should be
 *     invoked.
 * @param callback The callback to receive the result.
 */
public void singleLoad(Looper callbackLooper, final ManifestCallback<T> callback) {
  SingleFetchHelper fetchHelper = new SingleFetchHelper(
      new UriLoadable<>(manifestUri, uriDataSource, parser), callbackLooper, callback);
  fetchHelper.startLoading();
}

/**
 * @param manifestUri The manifest location.
 * @param uriDataSource The {@link UriDataSource} to use when loading the manifest.
 * @param parser A parser to parse the loaded manifest data.
 */
public ManifestFetcher(String manifestUri, UriDataSource uriDataSource,
    UriLoadable.Parser<T> parser) {
  this(manifestUri, uriDataSource, parser, null, null);
}

/**
 * Performs a single manifest load.
 *
 * @param callbackLooper The looper associated with the thread on which the callback should be
 *     invoked.
 * @param callback The callback to receive the result.
 */
public void singleLoad(Looper callbackLooper, final ManifestCallback<T> callback) {
  SingleFetchHelper fetchHelper = new SingleFetchHelper(
      new UriLoadable<>(manifestUri, uriDataSource, parser), callbackLooper, callback);
  fetchHelper.startLoading();
}