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/*
* Copyright (C) 2013 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.filtershow.filters;
import android.graphics.Bitmap;
import com.android.gallery3d.R;
public class ImageFilterHighlights extends SimpleImageFilter {
private static final String SERIALIZATION_NAME = "HIGHLIGHTS";
private static final String LOGTAG = "ImageFilterVignette";
public ImageFilterHighlights() {
mName = "Highlights";
}
SplineMath mSpline = new SplineMath(5);
double[] mHighlightCurve = { 0.0, 0.32, 0.418, 0.476, 0.642 };
public FilterRepresentation getDefaultRepresentation() {
FilterBasicRepresentation representation =
(FilterBasicRepresentation) super.getDefaultRepresentation();
representation.setName("Highlights");
representation.setSerializationName(SERIALIZATION_NAME);
representation.setFilterClass(ImageFilterHighlights.class);
representation.setTextId(R.string.highlight_recovery);
representation.setButtonId(R.id.highlightRecoveryButton);
representation.setMinimum(-100);
representation.setMaximum(100);
representation.setDefaultValue(0);
representation.setSupportsPartialRendering(true);
return representation;
}
native protected void nativeApplyFilter(Bitmap bitmap, int w, int h, float[] luminanceMap);
@Override
public Bitmap apply(Bitmap bitmap, float scaleFactor, int quality) {
if (getParameters() == null) {
return bitmap;
}
float p = getParameters().getValue();
double t = p/100.;
for (int i = 0; i < 5; i++) {
double x = i / 4.;
double y = mHighlightCurve[i] *t+x*(1-t);
mSpline.setPoint(i, x, y);
}
float[][] curve = mSpline.calculatetCurve(256);
float[] luminanceMap = new float[curve.length];
for (int i = 0; i < luminanceMap.length; i++) {
luminanceMap[i] = curve[i][1];
}
int w = bitmap.getWidth();
int h = bitmap.getHeight();
nativeApplyFilter(bitmap, w, h, luminanceMap);
return bitmap;
}
}
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