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/*
* Copyright (C) 2012 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 com.android.gallery3d.R;
import android.graphics.Bitmap;
import android.graphics.Color;
public class ImageFilterBwFilter extends SimpleImageFilter {
private static final String SERIALIZATION_NAME = "BWFILTER";
public ImageFilterBwFilter() {
mName = "BW Filter";
}
public FilterRepresentation getDefaultRepresentation() {
FilterBasicRepresentation representation = (FilterBasicRepresentation) super.getDefaultRepresentation();
representation.setName("BW Filter");
representation.setSerializationName(SERIALIZATION_NAME);
representation.setFilterClass(ImageFilterBwFilter.class);
representation.setMaximum(180);
representation.setMinimum(-180);
representation.setTextId(R.string.bwfilter);
representation.setSupportsPartialRendering(true);
return representation;
}
native protected void nativeApplyFilter(Bitmap bitmap, int w, int h, int r, int g, int b);
@Override
public Bitmap apply(Bitmap bitmap, float scaleFactor, int quality) {
if (getParameters() == null) {
return bitmap;
}
int w = bitmap.getWidth();
int h = bitmap.getHeight();
float[] hsv = new float[] {
180 + getParameters().getValue(), 1, 1
};
int rgb = Color.HSVToColor(hsv);
int r = 0xFF & (rgb >> 16);
int g = 0xFF & (rgb >> 8);
int b = 0xFF & (rgb >> 0);
nativeApplyFilter(bitmap, w, h, r, g, b);
return bitmap;
}
}
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