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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 android.renderscript;
/**
*
* Intrinsic for converting RGB to RGBA by using a 3D lookup table. The
* incoming r,g,b values are use as normalized x,y,z coordinates into a 3D
* allocation. The 8 nearest values are sampled and linearly interpolated. The
* result is placed in the output.
*
**/
public final class ScriptIntrinsic3DLUT extends ScriptIntrinsic {
private Allocation mLUT;
private Element mElement;
private ScriptIntrinsic3DLUT(long id, RenderScript rs, Element e) {
super(id, rs);
mElement = e;
}
/**
* Supported elements types are {@link Element#U8_4}
*
* The defaults tables are identity.
*
* @param rs The RenderScript context
* @param e Element type for intputs and outputs
*
* @return ScriptIntrinsic3DLUT
*/
public static ScriptIntrinsic3DLUT create(RenderScript rs, Element e) {
long id = rs.nScriptIntrinsicCreate(8, e.getID(rs));
if (!e.isCompatible(Element.U8_4(rs))) {
throw new RSIllegalArgumentException("Element must be compatible with uchar4.");
}
return new ScriptIntrinsic3DLUT(id, rs, e);
}
/**
* Sets the {@link android.renderscript.Allocation} to be used as the lookup table.
*
* The lookup table must use the same {@link android.renderscript.Element} as the intrinsic.
*
*/
public void setLUT(Allocation lut) {
final Type t = lut.getType();
if (t.getZ() == 0) {
throw new RSIllegalArgumentException("LUT must be 3d.");
}
if (!t.getElement().isCompatible(mElement)) {
throw new RSIllegalArgumentException("LUT element type must match.");
}
mLUT = lut;
setVar(0, mLUT);
}
/**
* Invoke the kernel and apply the lookup to each cell of ain
* and copy to aout.
*
* @param ain Input allocation
* @param aout Output allocation
*/
public void forEach(Allocation ain, Allocation aout) {
forEach(ain, aout, null);
}
/**
* Invoke the kernel and apply the lookup to each cell of ain
* and copy to aout.
*
* @param ain Input allocation
* @param aout Output allocation
* @param opt Launch options for kernel
*/
public void forEach(Allocation ain, Allocation aout, Script.LaunchOptions opt) {
forEach(0, ain, aout, null, opt);
}
/**
* Get a KernelID for this intrinsic kernel.
*
* @return Script.KernelID The KernelID object.
*/
public Script.KernelID getKernelID() {
return createKernelID(0, 3, null, null);
}
}
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