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/rs/java/android/renderscript/ScriptIntrinsic3DLUT.java

https://github.com/aizuzi/platform_frameworks_base
Java | 101 lines | 34 code | 16 blank | 51 comment | 4 complexity | bc13c8ae1692a2d1ad2b63d0b86ae44d MD5 | raw file
  1/*
  2 * Copyright (C) 2012 The Android Open Source Project
  3 *
  4 * Licensed under the Apache License, Version 2.0 (the "License");
  5 * you may not use this file except in compliance with the License.
  6 * You may obtain a copy of the License at
  7 *
  8 *      http://www.apache.org/licenses/LICENSE-2.0
  9 *
 10 * Unless required by applicable law or agreed to in writing, software
 11 * distributed under the License is distributed on an "AS IS" BASIS,
 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 13 * See the License for the specific language governing permissions and
 14 * limitations under the License.
 15 */
 16
 17package android.renderscript;
 18
 19import android.util.Log;
 20
 21/**
 22 *
 23 * Intrinsic for converting RGB to RGBA by using a 3D lookup table.  The
 24 * incoming r,g,b values are use as normalized x,y,z coordinates into a 3D
 25 * allocation.  The 8 nearest values are sampled and linearly interpolated.  The
 26 * result is placed in the output.
 27 *
 28 **/
 29public final class ScriptIntrinsic3DLUT extends ScriptIntrinsic {
 30    private Allocation mLUT;
 31    private Element mElement;
 32
 33    private ScriptIntrinsic3DLUT(long id, RenderScript rs, Element e) {
 34        super(id, rs);
 35        mElement = e;
 36    }
 37
 38    /**
 39     * Supported elements types are {@link Element#U8_4}
 40     *
 41     * The defaults tables are identity.
 42     *
 43     * @param rs The RenderScript context
 44     * @param e Element type for intputs and outputs
 45     *
 46     * @return ScriptIntrinsic3DLUT
 47     */
 48    public static ScriptIntrinsic3DLUT create(RenderScript rs, Element e) {
 49        long id = rs.nScriptIntrinsicCreate(8, e.getID(rs));
 50
 51        if (!e.isCompatible(Element.U8_4(rs))) {
 52            throw new RSIllegalArgumentException("Element must be compatible with uchar4.");
 53        }
 54
 55        return new ScriptIntrinsic3DLUT(id, rs, e);
 56    }
 57
 58    /**
 59     * Sets the {@link android.renderscript.Allocation} to be used as the lookup table.
 60     *
 61     * The lookup table must use the same {@link android.renderscript.Element} as the intrinsic.
 62     *
 63     */
 64
 65    public void setLUT(Allocation lut) {
 66        final Type t = lut.getType();
 67
 68        if (t.getZ() == 0) {
 69            throw new RSIllegalArgumentException("LUT must be 3d.");
 70        }
 71
 72        if (!t.getElement().isCompatible(mElement)) {
 73            throw new RSIllegalArgumentException("LUT element type must match.");
 74        }
 75
 76        mLUT = lut;
 77        setVar(0, mLUT);
 78    }
 79
 80
 81    /**
 82     * Invoke the kernel and apply the lookup to each cell of ain
 83     * and copy to aout.
 84     *
 85     * @param ain Input allocation
 86     * @param aout Output allocation
 87     */
 88    public void forEach(Allocation ain, Allocation aout) {
 89        forEach(0, ain, aout, null);
 90    }
 91
 92    /**
 93     * Get a KernelID for this intrinsic kernel.
 94     *
 95     * @return Script.KernelID The KernelID object.
 96     */
 97    public Script.KernelID getKernelID() {
 98        return createKernelID(0, 3, null, null);
 99    }
100}
101