111 lines
3.0 KiB
Java
111 lines
3.0 KiB
Java
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/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.renderscript;
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import android.content.Context;
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import android.content.res.Resources;
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import android.util.Log;
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/**
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* @hide
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**/
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public class ScriptIntrinsicLUT extends ScriptIntrinsic {
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private Matrix4f mMatrix = new Matrix4f();
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private Allocation mTables;
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private byte mCache[] = new byte[1024];
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private boolean mDirty = true;
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ScriptIntrinsicLUT(int id, RenderScript rs) {
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super(id, rs);
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mTables = Allocation.createSized(rs, Element.U8(rs), 1024);
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for (int ct=0; ct < 256; ct++) {
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mCache[ct] = (byte)ct;
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mCache[ct + 256] = (byte)ct;
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mCache[ct + 512] = (byte)ct;
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mCache[ct + 768] = (byte)ct;
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}
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bindAllocation(mTables, 0);
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}
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/**
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* Supported elements types are uchar4
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*
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* @param rs
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* @param e
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*
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* @return ScriptIntrinsicColorMatrix
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*/
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public static ScriptIntrinsicLUT create(RenderScript rs, Element e) {
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int id = rs.nScriptIntrinsicCreate(3, e.getID(rs));
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return new ScriptIntrinsicLUT(id, rs);
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}
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private void validate(int index, int value) {
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if (index < 0 || index > 255) {
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throw new RSIllegalArgumentException("Index out of range (0-255).");
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}
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if (value < 0 || value > 255) {
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throw new RSIllegalArgumentException("Value out of range (0-255).");
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}
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}
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public void setRed(int index, int value) {
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validate(index, value);
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mCache[index] = (byte)value;
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mDirty = true;
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}
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public void setGreen(int index, int value) {
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validate(index, value);
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mCache[index+256] = (byte)value;
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mDirty = true;
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}
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public void setBlue(int index, int value) {
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validate(index, value);
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mCache[index+512] = (byte)value;
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mDirty = true;
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}
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public void setAlpha(int index, int value) {
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validate(index, value);
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mCache[index+768] = (byte)value;
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mDirty = true;
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}
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/**
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* Invoke the kernel and apply the matrix to each cell of ain and copy to
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* aout.
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*
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* @param ain Input allocation
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* @param aout Output allocation
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*/
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public void forEach(Allocation ain, Allocation aout) {
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if (mDirty) {
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mDirty = false;
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mTables.copyFromUnchecked(mCache);
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}
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forEach(0, ain, aout, null);
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}
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}
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