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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.filterpacks.imageproc;
import android.filterfw.core.Filter;
import android.filterfw.core.FilterContext;
import android.filterfw.core.Frame;
import android.filterfw.core.FrameFormat;
import android.filterfw.core.KeyValueMap;
import android.filterfw.core.MutableFrameFormat;
import android.filterfw.core.NativeProgram;
import android.filterfw.core.NativeFrame;
import android.filterfw.core.Program;
import android.filterfw.core.ShaderProgram;
import android.filterfw.format.ImageFormat;
import android.util.Log;
/**
* @hide
*/
public class ToRGBAFilter extends Filter {
private int mInputBPP;
private Program mProgram;
private FrameFormat mLastFormat = null;
public ToRGBAFilter(String name) {
super(name);
}
@Override
public void setupPorts() {
MutableFrameFormat mask = new MutableFrameFormat(FrameFormat.TYPE_BYTE,
FrameFormat.TARGET_NATIVE);
mask.setDimensionCount(2);
addMaskedInputPort("image", mask);
addOutputBasedOnInput("image", "image");
}
@Override
public FrameFormat getOutputFormat(String portName, FrameFormat inputFormat) {
return getConvertedFormat(inputFormat);
}
public FrameFormat getConvertedFormat(FrameFormat format) {
MutableFrameFormat result = format.mutableCopy();
result.setMetaValue(ImageFormat.COLORSPACE_KEY, ImageFormat.COLORSPACE_RGBA);
result.setBytesPerSample(4);
return result;
}
public void createProgram(FilterContext context, FrameFormat format) {
mInputBPP = format.getBytesPerSample();
if (mLastFormat != null && mLastFormat.getBytesPerSample() == mInputBPP) return;
mLastFormat = format;
switch (mInputBPP) {
case 1:
mProgram = new NativeProgram("filterpack_imageproc", "gray_to_rgba");
break;
case 3:
mProgram = new NativeProgram("filterpack_imageproc", "rgb_to_rgba");
break;
default:
throw new RuntimeException("Unsupported BytesPerPixel: " + mInputBPP + "!");
}
}
@Override
public void process(FilterContext context) {
// Get input frame
Frame input = pullInput("image");
createProgram(context, input.getFormat());
// Create output frame
Frame output = context.getFrameManager().newFrame(getConvertedFormat(input.getFormat()));
// Process
mProgram.process(input, output);
// Push output
pushOutput("image", output);
// Release pushed frame
output.release();
}
}
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