content: /*
   * Copyright (C) 2016 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package com.google.android.exoplayer2.upstream;
  
  import com.google.android.exoplayer2.upstream.Loader.Loadable;
  import java.io.IOException;
  
  /**
   * Conditionally throws errors affecting a {@link Loader}.
   */
  public interface LoaderErrorThrower {
  
    /**
     * Throws a fatal error, or a non-fatal error if loading is currently backed off and the current
     * {@link Loadable} has incurred a number of errors greater than the {@link Loader}s default
     * minimum number of retries. Else does nothing.
     *
     * @throws IOException The error.
     */
    void maybeThrowError() throws IOException;
  
    /**
     * Throws a fatal error, or a non-fatal error if loading is currently backed off and the current
     * {@link Loadable} has incurred a number of errors greater than the specified minimum number
     * of retries. Else does nothing.
     *
     * @param minRetryCount A minimum retry count that must be exceeded for a non-fatal error to be
     *     thrown. Should be non-negative.
     * @throws IOException The error.
     */
    void maybeThrowError(int minRetryCount) throws IOException;
  
    /**
     * A {@link LoaderErrorThrower} that never throws.
     */
    final class Dummy implements LoaderErrorThrower {
  
      @Override
      public void maybeThrowError() throws IOException {
        // Do nothing.
      }
  
      @Override
      public void maybeThrowError(int minRetryCount) throws IOException {
        // Do nothing.
      }
  
    }
  
  }
  