BitmapFramePreparationStrategy.java

/*
 * Copyright (c) 2017-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */
package com.facebook.fresco.animation.bitmap.preparation;

import com.facebook.fresco.animation.backend.AnimationBackend;
import com.facebook.fresco.animation.bitmap.BitmapFrameCache;

/**
 * Frame preparation strategy to prepare next animation frames.
 */
public interface BitmapFramePreparationStrategy {

  /**
   * Decide whether frames should be prepared ahead of time when a frame is drawn.
   *
   * @param bitmapFramePreparer the preparer to be used to create frames
   * @param bitmapFrameCache the cache to pass to the preparer
   * @param animationBackend the animation backend to prepare frames for
   * @param lastDrawnFrameNumber the last drawn frame number
   */
  void prepareFrames(
      BitmapFramePreparer bitmapFramePreparer,
      BitmapFrameCache bitmapFrameCache,
      AnimationBackend animationBackend,
      int lastDrawnFrameNumber);
}