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.util;
  
  import java.io.BufferedOutputStream;
  import java.io.IOException;
  import java.io.OutputStream;
  
  /**
   * This is a subclass of {@link BufferedOutputStream} with a {@link #reset(OutputStream)} method
   * that allows an instance to be re-used with another underlying output stream.
   */
  public final class ReusableBufferedOutputStream extends BufferedOutputStream {
  
    private boolean closed;
  
    public ReusableBufferedOutputStream(OutputStream out) {
      super(out);
    }
  
    public ReusableBufferedOutputStream(OutputStream out, int size) {
      super(out, size);
    }
  
    @Override
    public void close() throws IOException {
      closed = true;
  
      Throwable thrown = null;
      try {
        flush();
      } catch (Throwable e) {
        thrown = e;
      }
      try {
        out.close();
      } catch (Throwable e) {
        if (thrown == null) {
          thrown = e;
        }
      }
      if (thrown != null) {
        Util.sneakyThrow(thrown);
      }
    }
  
    /**
     * Resets this stream and uses the given output stream for writing. This stream must be closed
     * before resetting.
     *
     * @param out New output stream to be used for writing.
     * @throws IllegalStateException If the stream isn't closed.
     */
    public void reset(OutputStream out) {
      Assertions.checkState(closed);
      this.out = out;
      count = 0;
      closed = false;
    }
  }
  