content: /*
   * Copyright (C) 2012 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.android.gallery3d.exif;
  
  import java.io.InputStream;
  import java.nio.ByteBuffer;
  
  class ByteBufferInputStream extends InputStream {
  
      private ByteBuffer mBuf;
  
      public ByteBufferInputStream(ByteBuffer buf) {
          mBuf = buf;
      }
  
      @Override
      public int read() {
          if (!mBuf.hasRemaining()) {
              return -1;
          }
          return mBuf.get() & 0xFF;
      }
  
      @Override
      public int read(byte[] bytes, int off, int len) {
          if (!mBuf.hasRemaining()) {
              return -1;
          }
  
          len = Math.min(len, mBuf.remaining());
          mBuf.get(bytes, off, len);
          return len;
      }
  }
  