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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;
public class ImageFilterSharpen extends ImageFilterRS {
private static final String LOGTAG = "ImageFilterSharpen";
private ScriptC_convolve3x3 mScript;
float mScaleFactor;
private FilterBasicRepresentation mParameters;
public ImageFilterSharpen() {
mName = "Sharpen";
}
public FilterRepresentation getDefaultRepresentation() {
FilterRepresentation representation = new FilterBasicRepresentation("Sharpen", 0, 0, 100);
representation.setShowParameterValue(true);
representation.setFilterClass(ImageFilterSharpen.class);
return representation;
}
public void useRepresentation(FilterRepresentation representation) {
FilterBasicRepresentation parameters = (FilterBasicRepresentation) representation;
mParameters = parameters;
}
public boolean hasDefaultRepresentation() {
return true;
}
@Override
public int getButtonId() {
return R.id.sharpenButton;
}
@Override
public int getTextId() {
return R.string.sharpness;
}
@Override
public int getOverlayBitmaps() {
return R.drawable.filtershow_button_colors_sharpen;
}
@Override
public int getEditingViewId() {
return R.id.imageZoom;
}
@Override
public void createFilter(android.content.res.Resources res, float scaleFactor,
boolean highQuality) {
int w = mInPixelsAllocation.getType().getX();
int h = mInPixelsAllocation.getType().getY();
mScaleFactor = scaleFactor;
if (mScript == null) {
mScript = new ScriptC_convolve3x3(getRenderScriptContext(), res, R.raw.convolve3x3);
}
mScript.set_gWidth(w);
mScript.set_gHeight(h);
}
private void computeKernel(){
float p1 = mParameters.getValue() * mScaleFactor;
float value = p1 / 100.0f;
float f[] = new float[9];
float p = value;
f[0] = -p;
f[1] = -p;
f[2] = -p;
f[3] = -p;
f[4] = 8 * p + 1;
f[5] = -p;
f[6] = -p;
f[7] = -p;
f[8] = -p;
mScript.set_gCoeffs(f);
}
@Override
public void runFilter() {
if (mParameters == null) {
return;
}
computeKernel();
mScript.set_gIn(mInPixelsAllocation);
mScript.bind_gPixels(mInPixelsAllocation);
mScript.forEach_root(mInPixelsAllocation, mOutPixelsAllocation);
}
}
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