Merge "Add BiCubic resize instrinsic"

/*

 * Copyright (C) 2014 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 performing a resize of a 2D allocation.

 * @hide

 */

public final class ScriptIntrinsicResize extends ScriptIntrinsic {

    private Allocation mInput;

    private ScriptIntrinsicResize(long id, RenderScript rs) {

        super(id, rs);

    }

    /**

     * Supported elements types are {@link Element#U8}, {@link

     * Element#U8_2}, {@link Element#U8_3}, {@link Element#U8_4}

     *

     * @param rs The RenderScript context

     *

     * @return ScriptIntrinsicResize

     */

    public static ScriptIntrinsicResize create(RenderScript rs) {

        long id = rs.nScriptIntrinsicCreate(12, 0);

        ScriptIntrinsicResize si = new ScriptIntrinsicResize(id, rs);

        return si;

    }

    /**

     * Set the input of the resize.

     * Must match the element type supplied during create.

     *

     * @param ain The input allocation.

     */

    public void setInput(Allocation ain) {

        Element e = ain.getElement();

        if (!e.isCompatible(Element.U8(mRS)) &&

            !e.isCompatible(Element.U8_2(mRS)) &&

            !e.isCompatible(Element.U8_3(mRS)) &&

            !e.isCompatible(Element.U8_4(mRS))) {

            throw new RSIllegalArgumentException("Unsuported element type.");

        }

        mInput = ain;

        setVar(0, ain);

    }

    /**

     * Get a FieldID for the input field of this intrinsic.

     *

     * @return Script.FieldID The FieldID object.

     */

    public Script.FieldID getFieldID_Input() {

        return createFieldID(0, null);

    }

    /**

     * Resize copy the input allocation to the output specified. The

     * Allocation is rescaled if necessary using bi-cubic

     * interpolation.

     *

     * @param aout Output allocation. Element type must match

     *             current input.  Must not be same as input.

     */

    public void forEach_bicubic(Allocation aout) {

        if (aout == mInput) {

            throw new RSIllegalArgumentException("Output cannot be same as Input.");

        }

        forEach_bicubic(aout, null);

    }

    /**

     * Resize copy the input allocation to the output specified. The

     * Allocation is rescaled if necessary using bi-cubic

     * interpolation.

     *

     * @param aout Output allocation. Element type must match

     *             current input.

     * @param opt LaunchOptions for clipping

     */

    public void forEach_bicubic(Allocation aout, Script.LaunchOptions opt) {

        forEach(0, null, aout, null, opt);

    }

    /**

     * Get a KernelID for this intrinsic kernel.

     *

     * @return Script.KernelID The KernelID object.

     */

    public Script.KernelID getKernelID_bicubic() {

        return createKernelID(0, 2, null, null);

    }

}