/*
 * 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.text;

import com.google.android.exoplayer2.decoder.Decoder;

/**
 * Decodes {@link Subtitle}s from {@link SubtitleInputBuffer}s.
 */
public interface SubtitleDecoder extends
    Decoder<SubtitleInputBuffer, SubtitleOutputBuffer, SubtitleDecoderException> {

  /**
   * Informs the decoder of the current playback position.
   * <p>
   * Must be called prior to each attempt to dequeue output buffers from the decoder.
   *
   * @param positionUs The current playback position in microseconds.
   */
  void setPositionUs(long positionUs);

}
