content: /*
   * 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 androidx.renderscript;
  
  import android.util.Log;
  
  /**
   *
   * 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 class ScriptIntrinsic3DLUT extends ScriptIntrinsic {
      private Allocation mLUT;
      private Element mElement;
      // API level for the intrinsic
      private static final int INTRINSIC_API_LEVEL = 19;
  
      protected 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) {
          if (!e.isCompatible(Element.U8_4(rs))) {
              throw new RSIllegalArgumentException("Element must be compatible with uchar4.");
          }
          long id;
          boolean mUseIncSupp = rs.isUseNative() &&
                                android.os.Build.VERSION.SDK_INT < INTRINSIC_API_LEVEL;
  
          id = rs.nScriptIntrinsicCreate(8, e.getID(rs), mUseIncSupp);
  
          ScriptIntrinsic3DLUT si = new ScriptIntrinsic3DLUT(id, rs, e);
          si.setIncSupp(mUseIncSupp);
          return si;
      }
  
      /**
       * Sets the {@link androidx.renderscript.Allocation} to be used as
       * the lookup table.
       *
       * The lookup table must use the same
       * {@link androidx.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(0, ain, aout, null);
      }
  
      /**
       * Get a KernelID for this intrinsic kernel.
       *
       * @return Script.KernelID The KernelID object.
       */
      public Script.KernelID getKernelID() {
          return createKernelID(0, 3, null, null);
      }
  }
  
  