CropFilterpublic class CropFilter extends android.filterfw.core.Filter
| Fields Summary |
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| private android.filterfw.core.Program | mProgram | | private android.filterfw.core.FrameFormat | mLastFormat | | private int | mOutputWidth | | private int | mOutputHeight | | private boolean | mFillBlack | | private final String | mFragShader |
| Constructors Summary |
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public CropFilter(String name)
super(name);
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| Methods Summary |
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| protected void | createProgram(android.filterfw.core.FilterContext context, android.filterfw.core.FrameFormat format)
// TODO: Add CPU version
if (mLastFormat != null && mLastFormat.getTarget() == format.getTarget()) return;
mLastFormat = format;
mProgram = null;
switch (format.getTarget()) {
case FrameFormat.TARGET_GPU:
if(mFillBlack)
mProgram = new ShaderProgram(context, mFragShader);
else
mProgram = ShaderProgram.createIdentity(context);
break;
}
if (mProgram == null) {
throw new RuntimeException("Could not create a program for crop filter " + this + "!");
}
| | public android.filterfw.core.FrameFormat | getOutputFormat(java.lang.String portName, android.filterfw.core.FrameFormat inputFormat)
// Make sure output size is set to unspecified, as we do not know what we will be resizing
// to.
MutableFrameFormat outputFormat = inputFormat.mutableCopy();
outputFormat.setDimensions(FrameFormat.SIZE_UNSPECIFIED, FrameFormat.SIZE_UNSPECIFIED);
return outputFormat;
| | public void | process(android.filterfw.core.FilterContext env)
// Get input frame
Frame imageFrame = pullInput("image");
Frame boxFrame = pullInput("box");
createProgram(env, imageFrame.getFormat());
// Get the box
Quad box = (Quad)boxFrame.getObjectValue();
// Create output format
MutableFrameFormat outputFormat = imageFrame.getFormat().mutableCopy();
outputFormat.setDimensions(mOutputWidth == -1 ? outputFormat.getWidth() : mOutputWidth,
mOutputHeight == -1 ? outputFormat.getHeight() : mOutputHeight);
// Create output frame
Frame output = env.getFrameManager().newFrame(outputFormat);
// Set the program parameters
if (mProgram instanceof ShaderProgram) {
ShaderProgram shaderProgram = (ShaderProgram)mProgram;
shaderProgram.setSourceRegion(box);
}
mProgram.process(imageFrame, output);
// Push output
pushOutput("image", output);
// Release pushed frame
output.release();
| | public void | setupPorts()
addMaskedInputPort("image", ImageFormat.create(ImageFormat.COLORSPACE_RGBA));
addMaskedInputPort("box", ObjectFormat.fromClass(Quad.class, FrameFormat.TARGET_SIMPLE));
addOutputBasedOnInput("image", "image");
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