| Methods Summary |
|---|
| public void | fieldPortValueUpdated(java.lang.String name, android.filterfw.core.FilterContext context)
if (mProgram != null) {
updateProgramParams();
}
|
| public android.filterfw.core.FrameFormat | getOutputFormat(java.lang.String portName, android.filterfw.core.FrameFormat inputFormat)
return inputFormat;
|
| public void | initProgram(android.filterfw.core.FilterContext context, int target)
switch (target) {
case FrameFormat.TARGET_GPU:
ShaderProgram shaderProgram = new ShaderProgram(context, mFisheyeShader);
shaderProgram.setMaximumTileSize(mTileSize);
mProgram = shaderProgram;
break;
default:
throw new RuntimeException("Filter FisheyeFilter does not support frames of " +
"target " + target + "!");
}
mTarget = target;
|
| public void | process(android.filterfw.core.FilterContext context)
// Get input frame
Frame input = pullInput("image");
FrameFormat inputFormat = input.getFormat();
// Create output frame
Frame output = context.getFrameManager().newFrame(inputFormat);
// Create program if not created already
if (mProgram == null || inputFormat.getTarget() != mTarget) {
initProgram(context, inputFormat.getTarget());
}
// Check if the frame size has changed
if (inputFormat.getWidth() != mWidth || inputFormat.getHeight() != mHeight) {
updateFrameSize(inputFormat.getWidth(), inputFormat.getHeight());
}
// Process
mProgram.process(input, output);
// Push output
pushOutput("image", output);
// Release pushed frame
output.release();
|
| public void | setupPorts()
addMaskedInputPort("image", ImageFormat.create(ImageFormat.COLORSPACE_RGBA));
addOutputBasedOnInput("image", "image");
|
| private void | updateFrameSize(int width, int height)
mWidth = width;
mHeight = height;
updateProgramParams();
|
| private void | updateProgramParams()
final float pi = 3.14159265f;
float scale[] = new float[2];
if (mWidth > mHeight) {
scale[0] = 1f;
scale[1] = ((float) mHeight) / mWidth;
} else {
scale[0] = ((float) mWidth) / mHeight;
scale[1] = 1f;
}
float alpha = mScale * 2.0f + 0.75f;
float bound2 = 0.25f * (scale[0] * scale[0] + scale[1] * scale[1]);
float bound = (float) Math.sqrt(bound2);
float radius = 1.15f * bound;
float radius2 = radius * radius;
float max_radian = 0.5f * pi -
(float) Math.atan(alpha / bound * (float) Math.sqrt(radius2 - bound2));
float factor = bound / max_radian;
mProgram.setHostValue("scale", scale);
mProgram.setHostValue("radius2",radius2);
mProgram.setHostValue("factor", factor);
mProgram.setHostValue("alpha", alpha);
|
