ToonFilterPostprocessor.java

package jp.wasabeef.fresco.processors.gpu;

/**
 * Copyright (C) 2017 Wasabeef
 *
 * 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.
 */

import android.content.Context;
import com.facebook.cache.common.CacheKey;
import com.facebook.cache.common.SimpleCacheKey;
import jp.co.cyberagent.android.gpuimage.GPUImageToonFilter;

/**
 * The threshold at which to apply the edges, default of 0.2.
 * The levels of quantization for the posterization of colors within the scene,
 * with a default of 10.0.
 */
public class ToonFilterPostprocessor extends GPUFilterPostprocessor {

  private float threshold;
  private float quantizationLevels;

  public ToonFilterPostprocessor(Context context) {
    this(context, .2f, 10.0f);
  }

  public ToonFilterPostprocessor(Context context, float threshold, float quantizationLevels) {
    super(context, new GPUImageToonFilter());

    this.threshold = threshold;
    this.quantizationLevels = quantizationLevels;

    GPUImageToonFilter filter = getFilter();
    filter.setThreshold(this.threshold);
    filter.setQuantizationLevels(this.quantizationLevels);
  }

  @Override public CacheKey getPostprocessorCacheKey() {
    return new SimpleCacheKey(
        "threshold=" + threshold + ",quantizationLevels=" + quantizationLevels);
  }
}