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/*
* Copyright (C) 2011 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 android.media.effect;
import android.filterfw.core.Filter;
import android.filterfw.core.FilterFactory;
import android.filterfw.core.FilterFunction;
import android.filterfw.core.Frame;
import android.media.effect.EffectContext;
/**
* Effect subclass for effects based on a single Filter. Subclasses need only invoke the
* constructor with the correct arguments to obtain an Effect implementation.
*
* @hide
*/
public class SingleFilterEffect extends FilterEffect {
protected FilterFunction mFunction;
protected String mInputName;
protected String mOutputName;
/**
* Constructs a new FilterFunctionEffect.
*
* @param name The name of this effect (used to create it in the EffectFactory).
* @param filterClass The class of the filter to wrap.
* @param inputName The name of the input image port.
* @param outputName The name of the output image port.
* @param finalParameters Key-value pairs of final input port assignments.
*/
public SingleFilterEffect(EffectContext context,
String name,
Class filterClass,
String inputName,
String outputName,
Object... finalParameters) {
super(context, name);
mInputName = inputName;
mOutputName = outputName;
String filterName = filterClass.getSimpleName();
FilterFactory factory = FilterFactory.sharedFactory();
Filter filter = factory.createFilterByClass(filterClass, filterName);
filter.initWithAssignmentList(finalParameters);
mFunction = new FilterFunction(getFilterContext(), filter);
}
@Override
public void apply(int inputTexId, int width, int height, int outputTexId) {
beginGLEffect();
Frame inputFrame = frameFromTexture(inputTexId, width, height);
Frame outputFrame = frameFromTexture(outputTexId, width, height);
Frame resultFrame = mFunction.executeWithArgList(mInputName, inputFrame);
outputFrame.setDataFromFrame(resultFrame);
inputFrame.release();
outputFrame.release();
resultFrame.release();
endGLEffect();
}
@Override
public void setParameter(String parameterKey, Object value) {
mFunction.setInputValue(parameterKey, value);
}
@Override
public void release() {
mFunction.tearDown();
mFunction = null;
}
}
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