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 java.io.IOException;
  
  /**
   * A component to which streams of data can be written.
   */
  public interface DataSink {
  
    /**
     * A factory for {@link DataSink} instances.
     */
    interface Factory {
  
      /**
       * Creates a {@link DataSink} instance.
       */
      DataSink createDataSink();
  
    }
  
    /**
     * Opens the sink to consume the specified data.
     *
     * @param dataSpec Defines the data to be consumed.
     * @throws IOException If an error occurs opening the sink.
     */
    void open(DataSpec dataSpec) throws IOException;
  
    /**
     * Consumes the provided data.
     *
     * @param buffer The buffer from which data should be consumed.
     * @param offset The offset of the data to consume in {@code buffer}.
     * @param length The length of the data to consume, in bytes.
     * @throws IOException If an error occurs writing to the sink.
     */
    void write(byte[] buffer, int offset, int length) throws IOException;
  
    /**
     * Closes the sink.
     *
     * @throws IOException If an error occurs closing the sink.
     */
    void close() throws IOException;
  
  }
  