content: /*
   * Copyright (C) 2012 CyberAgent
   *
   * 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.seu.magicfilter.filter.base.gpuimage;
  
  import android.opengl.GLES20;
  
  import com.seu.magicfilter.R;
  
  /**
   * Sharpens the picture. <br>
   * <br>
   * sharpness: from -4.0 to 4.0, with 0.0 as the normal level
   */
  public class GPUImageSharpenFilter extends GPUImageFilter {
  
  
      private int mSharpnessLocation;
      private float mSharpness;
      private int mImageWidthFactorLocation;
      private int mImageHeightFactorLocation;
  
      public GPUImageSharpenFilter() {
          this(0.0f);
      }
  
      public GPUImageSharpenFilter(final float sharpness) {
          super(R.raw.sharpen_vertex, R.raw.sharpen_fragment);
          mSharpness = sharpness;
      }
  
      @Override
      public void onInit() {
          super.onInit();
          mSharpnessLocation = GLES20.glGetUniformLocation(getProgram(), "sharpness");
          mImageWidthFactorLocation = GLES20.glGetUniformLocation(getProgram(), "imageWidthFactor");
          mImageHeightFactorLocation = GLES20.glGetUniformLocation(getProgram(), "imageHeightFactor");
          setSharpness(mSharpness);
      }
  
      @Override
      public void onInputSizeChanged(final int width, final int height) {
          super.onInputSizeChanged(width, height);
          setFloat(mImageWidthFactorLocation, 1.0f / width);
          setFloat(mImageHeightFactorLocation, 1.0f / height);
      }
  
      public void setSharpness(final float sharpness) {
          mSharpness = sharpness;
          setFloat(mSharpnessLocation, mSharpness);
      }
  }
  