| /* | 
 |  * Copyright (C) 2013 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; | 
 |  | 
 | import android.compat.annotation.UnsupportedAppUsage; | 
 |  | 
 | /** | 
 |  * <p>An Element represents one item within an {@link | 
 |  * android.renderscript.Allocation}.  An Element is roughly equivalent to a C | 
 |  * type in a RenderScript kernel. Elements may be basic or complex. Some basic | 
 |  * elements are</p> <ul> <li>A single float value (equivalent to a float in a | 
 |  * kernel)</li> <li>A four-element float vector (equivalent to a float4 in a | 
 |  * kernel)</li> <li>An unsigned 32-bit integer (equivalent to an unsigned int in | 
 |  * a kernel)</li> <li>A single signed 8-bit integer (equivalent to a char in a | 
 |  * kernel)</li> </ul> <p>A complex element is roughly equivalent to a C struct | 
 |  * and contains a number of basic or complex Elements. From Java code, a complex | 
 |  * element contains a list of sub-elements and names that represents a | 
 |  * particular data structure. Structs used in RS scripts are available to Java | 
 |  * code by using the {@code ScriptField_structname} class that is reflected from | 
 |  * a particular script.</p> | 
 |  * | 
 |  * <p>Basic Elements are comprised of a {@link | 
 |  * android.renderscript.Element.DataType} and a {@link | 
 |  * android.renderscript.Element.DataKind}. The DataType encodes C type | 
 |  * information of an Element, while the DataKind encodes how that Element should | 
 |  * be interpreted by a {@link android.renderscript.Sampler}. Note that {@link | 
 |  * android.renderscript.Allocation} objects with DataKind {@link | 
 |  * android.renderscript.Element.DataKind#USER} cannot be used as input for a | 
 |  * {@link android.renderscript.Sampler}. In general, {@link | 
 |  * android.renderscript.Allocation} objects that are intended for use with a | 
 |  * {@link android.renderscript.Sampler} should use bitmap-derived Elements such | 
 |  * as {@link android.renderscript.Element#RGBA_8888} or {@link | 
 |  * android.renderscript#Element.A_8}.</p> | 
 |  * | 
 |  * <div class="special reference"> | 
 |  * <h3>Developer Guides</h3> | 
 |  * <p>For more information about creating an application that uses RenderScript, read the | 
 |  * <a href="{@docRoot}guide/topics/renderscript/index.html">RenderScript</a> developer guide.</p> | 
 |  * </div> | 
 |  * | 
 |  * @deprecated Renderscript has been deprecated in API level 31. Please refer to the <a | 
 |  * href="https://developer.android.com/guide/topics/renderscript/migration-guide">migration | 
 |  * guide</a> for the proposed alternatives. | 
 |  **/ | 
 | @Deprecated | 
 | public class Element extends BaseObj { | 
 |     int mSize; | 
 |     Element[] mElements; | 
 |     String[] mElementNames; | 
 |     int[] mArraySizes; | 
 |     int[] mOffsetInBytes; | 
 |  | 
 |     int[] mVisibleElementMap; | 
 |  | 
 |     DataType mType; | 
 |     DataKind mKind; | 
 |     boolean mNormalized; | 
 |     int mVectorSize; | 
 |  | 
 |     private void updateVisibleSubElements() { | 
 |         if (mElements == null) { | 
 |             return; | 
 |         } | 
 |  | 
 |         int noPaddingFieldCount = 0; | 
 |         int fieldCount = mElementNames.length; | 
 |         // Find out how many elements are not padding | 
 |         for (int ct = 0; ct < fieldCount; ct ++) { | 
 |             if (mElementNames[ct].charAt(0) != '#') { | 
 |                 noPaddingFieldCount ++; | 
 |             } | 
 |         } | 
 |         mVisibleElementMap = new int[noPaddingFieldCount]; | 
 |  | 
 |         // Make a map that points us at non-padding elements | 
 |         for (int ct = 0, ctNoPadding = 0; ct < fieldCount; ct ++) { | 
 |             if (mElementNames[ct].charAt(0) != '#') { | 
 |                 mVisibleElementMap[ctNoPadding ++] = ct; | 
 |             } | 
 |         } | 
 |     } | 
 |  | 
 |     /** | 
 |     * @return element size in bytes | 
 |     */ | 
 |     public int getBytesSize() {return mSize;} | 
 |  | 
 |     /** | 
 |     * Returns the number of vector components. 2 for float2, 4 for | 
 |     * float4, etc. | 
 |     * @return element vector size | 
 |     */ | 
 |     public int getVectorSize() {return mVectorSize;} | 
 |  | 
 |  | 
 |     /** | 
 |      * DataType represents the basic type information for a basic element.  The | 
 |      * naming convention follows.  For numeric types it is FLOAT, | 
 |      * SIGNED, or UNSIGNED followed by the _BITS where BITS is the | 
 |      * size of the data.  BOOLEAN is a true / false (1,0) | 
 |      * represented in an 8 bit container.  The UNSIGNED variants | 
 |      * with multiple bit definitions are for packed graphical data | 
 |      * formats and represent vectors with per vector member sizes | 
 |      * which are treated as a single unit for packing and alignment | 
 |      * purposes. | 
 |      * | 
 |      * MATRIX the three matrix types contain FLOAT_32 elements and are treated | 
 |      * as 32 bits for alignment purposes. | 
 |      * | 
 |      * RS_* objects:  opaque handles with implementation dependent | 
 |      * sizes. | 
 |      */ | 
 |     public enum DataType { | 
 |         NONE (0, 0), | 
 |         FLOAT_16 (1, 2), | 
 |         FLOAT_32 (2, 4), | 
 |         FLOAT_64 (3, 8), | 
 |         SIGNED_8 (4, 1), | 
 |         SIGNED_16 (5, 2), | 
 |         SIGNED_32 (6, 4), | 
 |         SIGNED_64 (7, 8), | 
 |         UNSIGNED_8 (8, 1), | 
 |         UNSIGNED_16 (9, 2), | 
 |         UNSIGNED_32 (10, 4), | 
 |         UNSIGNED_64 (11, 8), | 
 |  | 
 |         BOOLEAN(12, 1), | 
 |  | 
 |         UNSIGNED_5_6_5 (13, 2), | 
 |         UNSIGNED_5_5_5_1 (14, 2), | 
 |         UNSIGNED_4_4_4_4 (15, 2), | 
 |  | 
 |         MATRIX_4X4 (16, 64), | 
 |         MATRIX_3X3 (17, 36), | 
 |         MATRIX_2X2 (18, 16), | 
 |  | 
 |         RS_ELEMENT (1000), | 
 |         RS_TYPE (1001), | 
 |         RS_ALLOCATION (1002), | 
 |         RS_SAMPLER (1003), | 
 |         RS_SCRIPT (1004), | 
 |         RS_MESH (1005), | 
 |         RS_PROGRAM_FRAGMENT (1006), | 
 |         RS_PROGRAM_VERTEX (1007), | 
 |         RS_PROGRAM_RASTER (1008), | 
 |         RS_PROGRAM_STORE (1009), | 
 |         RS_FONT (1010); | 
 |  | 
 |         int mID; | 
 |         int mSize; | 
 |         DataType(int id, int size) { | 
 |             mID = id; | 
 |             mSize = size; | 
 |         } | 
 |  | 
 |         DataType(int id) { | 
 |             mID = id; | 
 |             mSize = 4; | 
 |             if (RenderScript.sPointerSize == 8) { | 
 |                 mSize = 32; | 
 |             } | 
 |         } | 
 |     } | 
 |  | 
 |     /** | 
 |      * The special interpretation of the data if required.  This is primarly | 
 |      * useful for graphical data.  USER indicates no special interpretation is | 
 |      * expected.  PIXEL is used in conjunction with the standard data types for | 
 |      * representing texture formats. | 
 |      */ | 
 |     public enum DataKind { | 
 |         USER (0), | 
 |  | 
 |         PIXEL_L (7), | 
 |         PIXEL_A (8), | 
 |         PIXEL_LA (9), | 
 |         PIXEL_RGB (10), | 
 |         PIXEL_RGBA (11), | 
 |         PIXEL_DEPTH (12), | 
 |         PIXEL_YUV(13); | 
 |  | 
 |         int mID; | 
 |         DataKind(int id) { | 
 |             mID = id; | 
 |         } | 
 |     } | 
 |  | 
 |     /** | 
 |      * Return if a element is too complex for use as a data source for a Mesh or | 
 |      * a Program. | 
 |      * | 
 |      * @return boolean | 
 |      */ | 
 |     public boolean isComplex() { | 
 |         if (mElements == null) { | 
 |             return false; | 
 |         } | 
 |         for (int ct=0; ct < mElements.length; ct++) { | 
 |             if (mElements[ct].mElements != null) { | 
 |                 return true; | 
 |             } | 
 |         } | 
 |         return false; | 
 |     } | 
 |  | 
 |     /** | 
 |     * Elements could be simple, such as an int or a float, or a | 
 |     * structure with multiple sub elements, such as a collection of | 
 |     * floats, float2, float4. This function returns zero for simple | 
 |     * elements or the number of sub-elements otherwise. | 
 |     * @return number of sub-elements in this element | 
 |     */ | 
 |     public int getSubElementCount() { | 
 |         if (mVisibleElementMap == null) { | 
 |             return 0; | 
 |         } | 
 |         return mVisibleElementMap.length; | 
 |     } | 
 |  | 
 |     /** | 
 |     * For complex elements, this function will return the | 
 |     * sub-element at index | 
 |     * @param index index of the sub-element to return | 
 |     * @return sub-element in this element at given index | 
 |     */ | 
 |     public Element getSubElement(int index) { | 
 |         if (mVisibleElementMap == null) { | 
 |             throw new RSIllegalArgumentException("Element contains no sub-elements"); | 
 |         } | 
 |         if (index < 0 || index >= mVisibleElementMap.length) { | 
 |             throw new RSIllegalArgumentException("Illegal sub-element index"); | 
 |         } | 
 |         return mElements[mVisibleElementMap[index]]; | 
 |     } | 
 |  | 
 |     /** | 
 |     * For complex elements, this function will return the | 
 |     * sub-element name at index | 
 |     * @param index index of the sub-element | 
 |     * @return sub-element in this element at given index | 
 |     */ | 
 |     public String getSubElementName(int index) { | 
 |         if (mVisibleElementMap == null) { | 
 |             throw new RSIllegalArgumentException("Element contains no sub-elements"); | 
 |         } | 
 |         if (index < 0 || index >= mVisibleElementMap.length) { | 
 |             throw new RSIllegalArgumentException("Illegal sub-element index"); | 
 |         } | 
 |         return mElementNames[mVisibleElementMap[index]]; | 
 |     } | 
 |  | 
 |     /** | 
 |     * For complex elements, some sub-elements could be statically | 
 |     * sized arrays. This function will return the array size for | 
 |     * sub-element at index | 
 |     * @param index index of the sub-element | 
 |     * @return array size of sub-element in this element at given index | 
 |     */ | 
 |     public int getSubElementArraySize(int index) { | 
 |         if (mVisibleElementMap == null) { | 
 |             throw new RSIllegalArgumentException("Element contains no sub-elements"); | 
 |         } | 
 |         if (index < 0 || index >= mVisibleElementMap.length) { | 
 |             throw new RSIllegalArgumentException("Illegal sub-element index"); | 
 |         } | 
 |         return mArraySizes[mVisibleElementMap[index]]; | 
 |     } | 
 |  | 
 |     /** | 
 |     * This function specifies the location of a sub-element within | 
 |     * the element | 
 |     * @param index index of the sub-element | 
 |     * @return offset in bytes of sub-element in this element at given index | 
 |     */ | 
 |     public int getSubElementOffsetBytes(int index) { | 
 |         if (mVisibleElementMap == null) { | 
 |             throw new RSIllegalArgumentException("Element contains no sub-elements"); | 
 |         } | 
 |         if (index < 0 || index >= mVisibleElementMap.length) { | 
 |             throw new RSIllegalArgumentException("Illegal sub-element index"); | 
 |         } | 
 |         return mOffsetInBytes[mVisibleElementMap[index]]; | 
 |     } | 
 |  | 
 |     /** | 
 |     * @return element data type | 
 |     */ | 
 |     public DataType getDataType() { | 
 |         return mType; | 
 |     } | 
 |  | 
 |     /** | 
 |     * @return element data kind | 
 |     */ | 
 |     public DataKind getDataKind() { | 
 |         return mKind; | 
 |     } | 
 |  | 
 |     /** | 
 |      * Utility function for returning an Element containing a single Boolean. | 
 |      * | 
 |      * @param rs Context to which the element will belong. | 
 |      * | 
 |      * @return Element | 
 |      */ | 
 |     public static Element BOOLEAN(RenderScript rs) { | 
 |         if (rs.mElement_BOOLEAN == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_BOOLEAN == null) { | 
 |                     rs.mElement_BOOLEAN = createUser(rs, DataType.BOOLEAN); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_BOOLEAN; | 
 |     } | 
 |  | 
 |     /** | 
 |      * Utility function for returning an Element containing a single UNSIGNED_8. | 
 |      * | 
 |      * @param rs Context to which the element will belong. | 
 |      * | 
 |      * @return Element | 
 |      */ | 
 |     public static Element U8(RenderScript rs) { | 
 |         if (rs.mElement_U8 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_U8 == null) { | 
 |                     rs.mElement_U8 = createUser(rs, DataType.UNSIGNED_8); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_U8; | 
 |     } | 
 |  | 
 |     /** | 
 |      * Utility function for returning an Element containing a single SIGNED_8. | 
 |      * | 
 |      * @param rs Context to which the element will belong. | 
 |      * | 
 |      * @return Element | 
 |      */ | 
 |     public static Element I8(RenderScript rs) { | 
 |         if (rs.mElement_I8 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_I8 == null) { | 
 |                     rs.mElement_I8 = createUser(rs, DataType.SIGNED_8); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_I8; | 
 |     } | 
 |  | 
 |     public static Element U16(RenderScript rs) { | 
 |         if (rs.mElement_U16 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_U16 == null) { | 
 |                     rs.mElement_U16 = createUser(rs, DataType.UNSIGNED_16); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_U16; | 
 |     } | 
 |  | 
 |     public static Element I16(RenderScript rs) { | 
 |         if (rs.mElement_I16 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_I16 == null) { | 
 |                     rs.mElement_I16 = createUser(rs, DataType.SIGNED_16); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_I16; | 
 |     } | 
 |  | 
 |     public static Element U32(RenderScript rs) { | 
 |         if (rs.mElement_U32 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_U32 == null) { | 
 |                     rs.mElement_U32 = createUser(rs, DataType.UNSIGNED_32); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_U32; | 
 |     } | 
 |  | 
 |     public static Element I32(RenderScript rs) { | 
 |         if (rs.mElement_I32 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_I32 == null) { | 
 |                     rs.mElement_I32 = createUser(rs, DataType.SIGNED_32); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_I32; | 
 |     } | 
 |  | 
 |     public static Element U64(RenderScript rs) { | 
 |         if (rs.mElement_U64 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_U64 == null) { | 
 |                     rs.mElement_U64 = createUser(rs, DataType.UNSIGNED_64); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_U64; | 
 |     } | 
 |  | 
 |     public static Element I64(RenderScript rs) { | 
 |         if (rs.mElement_I64 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_I64 == null) { | 
 |                     rs.mElement_I64 = createUser(rs, DataType.SIGNED_64); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_I64; | 
 |     } | 
 |  | 
 |     public static Element F16(RenderScript rs) { | 
 |         if (rs.mElement_F16 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_F16 == null) { | 
 |                     rs.mElement_F16 = createUser(rs, DataType.FLOAT_16); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_F16; | 
 |     } | 
 |  | 
 |     public static Element F32(RenderScript rs) { | 
 |         if (rs.mElement_F32 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_F32 == null) { | 
 |                     rs.mElement_F32 = createUser(rs, DataType.FLOAT_32); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_F32; | 
 |     } | 
 |  | 
 |     public static Element F64(RenderScript rs) { | 
 |         if (rs.mElement_F64 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_F64 == null) { | 
 |                     rs.mElement_F64 = createUser(rs, DataType.FLOAT_64); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_F64; | 
 |     } | 
 |  | 
 |     public static Element ELEMENT(RenderScript rs) { | 
 |         if (rs.mElement_ELEMENT == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_ELEMENT == null) { | 
 |                     rs.mElement_ELEMENT = createUser(rs, DataType.RS_ELEMENT); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_ELEMENT; | 
 |     } | 
 |  | 
 |     public static Element TYPE(RenderScript rs) { | 
 |         if (rs.mElement_TYPE == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_TYPE == null) { | 
 |                     rs.mElement_TYPE = createUser(rs, DataType.RS_TYPE); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_TYPE; | 
 |     } | 
 |  | 
 |     public static Element ALLOCATION(RenderScript rs) { | 
 |         if (rs.mElement_ALLOCATION == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_ALLOCATION == null) { | 
 |                     rs.mElement_ALLOCATION = createUser(rs, DataType.RS_ALLOCATION); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_ALLOCATION; | 
 |     } | 
 |  | 
 |     public static Element SAMPLER(RenderScript rs) { | 
 |         if (rs.mElement_SAMPLER == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_SAMPLER == null) { | 
 |                     rs.mElement_SAMPLER = createUser(rs, DataType.RS_SAMPLER); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_SAMPLER; | 
 |     } | 
 |  | 
 |     public static Element SCRIPT(RenderScript rs) { | 
 |         if (rs.mElement_SCRIPT == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_SCRIPT == null) { | 
 |                     rs.mElement_SCRIPT = createUser(rs, DataType.RS_SCRIPT); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_SCRIPT; | 
 |     } | 
 |  | 
 |     public static Element MESH(RenderScript rs) { | 
 |         if (rs.mElement_MESH == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_MESH == null) { | 
 |                     rs.mElement_MESH = createUser(rs, DataType.RS_MESH); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_MESH; | 
 |     } | 
 |  | 
 |     public static Element PROGRAM_FRAGMENT(RenderScript rs) { | 
 |         if (rs.mElement_PROGRAM_FRAGMENT == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_PROGRAM_FRAGMENT == null) { | 
 |                     rs.mElement_PROGRAM_FRAGMENT = createUser(rs, DataType.RS_PROGRAM_FRAGMENT); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_PROGRAM_FRAGMENT; | 
 |     } | 
 |  | 
 |     public static Element PROGRAM_VERTEX(RenderScript rs) { | 
 |         if (rs.mElement_PROGRAM_VERTEX == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_PROGRAM_VERTEX == null) { | 
 |                     rs.mElement_PROGRAM_VERTEX = createUser(rs, DataType.RS_PROGRAM_VERTEX); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_PROGRAM_VERTEX; | 
 |     } | 
 |  | 
 |     public static Element PROGRAM_RASTER(RenderScript rs) { | 
 |         if (rs.mElement_PROGRAM_RASTER == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_PROGRAM_RASTER == null) { | 
 |                     rs.mElement_PROGRAM_RASTER = createUser(rs, DataType.RS_PROGRAM_RASTER); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_PROGRAM_RASTER; | 
 |     } | 
 |  | 
 |     public static Element PROGRAM_STORE(RenderScript rs) { | 
 |         if (rs.mElement_PROGRAM_STORE == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_PROGRAM_STORE == null) { | 
 |                     rs.mElement_PROGRAM_STORE = createUser(rs, DataType.RS_PROGRAM_STORE); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_PROGRAM_STORE; | 
 |     } | 
 |  | 
 |     public static Element FONT(RenderScript rs) { | 
 |         if (rs.mElement_FONT == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_FONT == null) { | 
 |                     rs.mElement_FONT = createUser(rs, DataType.RS_FONT); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_FONT; | 
 |     } | 
 |  | 
 |     public static Element A_8(RenderScript rs) { | 
 |         if (rs.mElement_A_8 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_A_8 == null) { | 
 |                     rs.mElement_A_8 = createPixel(rs, DataType.UNSIGNED_8, DataKind.PIXEL_A); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_A_8; | 
 |     } | 
 |  | 
 |     public static Element RGB_565(RenderScript rs) { | 
 |         if (rs.mElement_RGB_565 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_RGB_565 == null) { | 
 |                     rs.mElement_RGB_565 = createPixel(rs, DataType.UNSIGNED_5_6_5, DataKind.PIXEL_RGB); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_RGB_565; | 
 |     } | 
 |  | 
 |     public static Element RGB_888(RenderScript rs) { | 
 |         if (rs.mElement_RGB_888 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_RGB_888 == null) { | 
 |                     rs.mElement_RGB_888 = createPixel(rs, DataType.UNSIGNED_8, DataKind.PIXEL_RGB); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_RGB_888; | 
 |     } | 
 |  | 
 |     public static Element RGBA_5551(RenderScript rs) { | 
 |         if (rs.mElement_RGBA_5551 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_RGBA_5551 == null) { | 
 |                     rs.mElement_RGBA_5551 = createPixel(rs, DataType.UNSIGNED_5_5_5_1, DataKind.PIXEL_RGBA); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_RGBA_5551; | 
 |     } | 
 |  | 
 |     public static Element RGBA_4444(RenderScript rs) { | 
 |         if (rs.mElement_RGBA_4444 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_RGBA_4444 == null) { | 
 |                     rs.mElement_RGBA_4444 = createPixel(rs, DataType.UNSIGNED_4_4_4_4, DataKind.PIXEL_RGBA); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_RGBA_4444; | 
 |     } | 
 |  | 
 |     public static Element RGBA_8888(RenderScript rs) { | 
 |         if (rs.mElement_RGBA_8888 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_RGBA_8888 == null) { | 
 |                     rs.mElement_RGBA_8888 = createPixel(rs, DataType.UNSIGNED_8, DataKind.PIXEL_RGBA); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_RGBA_8888; | 
 |     } | 
 |  | 
 |     public static Element F16_2(RenderScript rs) { | 
 |         if (rs.mElement_HALF_2 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_HALF_2 == null) { | 
 |                     rs.mElement_HALF_2 = createVector(rs, DataType.FLOAT_16, 2); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_HALF_2; | 
 |     } | 
 |  | 
 |     public static Element F16_3(RenderScript rs) { | 
 |         if (rs.mElement_HALF_3 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_HALF_3 == null) { | 
 |                     rs.mElement_HALF_3 = createVector(rs, DataType.FLOAT_16, 3); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_HALF_3; | 
 |     } | 
 |  | 
 |     public static Element F16_4(RenderScript rs) { | 
 |         if (rs.mElement_HALF_4 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_HALF_4 == null) { | 
 |                     rs.mElement_HALF_4 = createVector(rs, DataType.FLOAT_16, 4); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_HALF_4; | 
 |     } | 
 |  | 
 |     public static Element F32_2(RenderScript rs) { | 
 |         if (rs.mElement_FLOAT_2 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_FLOAT_2 == null) { | 
 |                     rs.mElement_FLOAT_2 = createVector(rs, DataType.FLOAT_32, 2); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_FLOAT_2; | 
 |     } | 
 |  | 
 |     public static Element F32_3(RenderScript rs) { | 
 |         if (rs.mElement_FLOAT_3 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_FLOAT_3 == null) { | 
 |                     rs.mElement_FLOAT_3 = createVector(rs, DataType.FLOAT_32, 3); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_FLOAT_3; | 
 |     } | 
 |  | 
 |     public static Element F32_4(RenderScript rs) { | 
 |         if (rs.mElement_FLOAT_4 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_FLOAT_4 == null) { | 
 |                     rs.mElement_FLOAT_4 = createVector(rs, DataType.FLOAT_32, 4); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_FLOAT_4; | 
 |     } | 
 |  | 
 |     public static Element F64_2(RenderScript rs) { | 
 |         if (rs.mElement_DOUBLE_2 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_DOUBLE_2 == null) { | 
 |                     rs.mElement_DOUBLE_2 = createVector(rs, DataType.FLOAT_64, 2); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_DOUBLE_2; | 
 |     } | 
 |  | 
 |     public static Element F64_3(RenderScript rs) { | 
 |         if (rs.mElement_DOUBLE_3 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_DOUBLE_3 == null) { | 
 |                     rs.mElement_DOUBLE_3 = createVector(rs, DataType.FLOAT_64, 3); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_DOUBLE_3; | 
 |     } | 
 |  | 
 |     public static Element F64_4(RenderScript rs) { | 
 |         if (rs.mElement_DOUBLE_4 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_DOUBLE_4 == null) { | 
 |                     rs.mElement_DOUBLE_4 = createVector(rs, DataType.FLOAT_64, 4); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_DOUBLE_4; | 
 |     } | 
 |  | 
 |     public static Element U8_2(RenderScript rs) { | 
 |         if (rs.mElement_UCHAR_2 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_UCHAR_2 == null) { | 
 |                     rs.mElement_UCHAR_2 = createVector(rs, DataType.UNSIGNED_8, 2); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_UCHAR_2; | 
 |     } | 
 |  | 
 |     public static Element U8_3(RenderScript rs) { | 
 |         if (rs.mElement_UCHAR_3 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_UCHAR_3 == null) { | 
 |                     rs.mElement_UCHAR_3 = createVector(rs, DataType.UNSIGNED_8, 3); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_UCHAR_3; | 
 |     } | 
 |  | 
 |     public static Element U8_4(RenderScript rs) { | 
 |         if (rs.mElement_UCHAR_4 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_UCHAR_4 == null) { | 
 |                     rs.mElement_UCHAR_4 = createVector(rs, DataType.UNSIGNED_8, 4); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_UCHAR_4; | 
 |     } | 
 |  | 
 |     public static Element I8_2(RenderScript rs) { | 
 |         if (rs.mElement_CHAR_2 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_CHAR_2 == null) { | 
 |                     rs.mElement_CHAR_2 = createVector(rs, DataType.SIGNED_8, 2); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_CHAR_2; | 
 |     } | 
 |  | 
 |     public static Element I8_3(RenderScript rs) { | 
 |         if (rs.mElement_CHAR_3 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_CHAR_3 == null) { | 
 |                     rs.mElement_CHAR_3 = createVector(rs, DataType.SIGNED_8, 3); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_CHAR_3; | 
 |     } | 
 |  | 
 |     public static Element I8_4(RenderScript rs) { | 
 |         if (rs.mElement_CHAR_4 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_CHAR_4 == null) { | 
 |                     rs.mElement_CHAR_4 = createVector(rs, DataType.SIGNED_8, 4); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_CHAR_4; | 
 |     } | 
 |  | 
 |     public static Element U16_2(RenderScript rs) { | 
 |         if (rs.mElement_USHORT_2 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_USHORT_2 == null) { | 
 |                     rs.mElement_USHORT_2 = createVector(rs, DataType.UNSIGNED_16, 2); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_USHORT_2; | 
 |     } | 
 |  | 
 |     public static Element U16_3(RenderScript rs) { | 
 |         if (rs.mElement_USHORT_3 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_USHORT_3 == null) { | 
 |                     rs.mElement_USHORT_3 = createVector(rs, DataType.UNSIGNED_16, 3); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_USHORT_3; | 
 |     } | 
 |  | 
 |     public static Element U16_4(RenderScript rs) { | 
 |         if (rs.mElement_USHORT_4 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_USHORT_4 == null) { | 
 |                     rs.mElement_USHORT_4 = createVector(rs, DataType.UNSIGNED_16, 4); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_USHORT_4; | 
 |     } | 
 |  | 
 |     public static Element I16_2(RenderScript rs) { | 
 |         if (rs.mElement_SHORT_2 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_SHORT_2 == null) { | 
 |                     rs.mElement_SHORT_2 = createVector(rs, DataType.SIGNED_16, 2); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_SHORT_2; | 
 |     } | 
 |  | 
 |     public static Element I16_3(RenderScript rs) { | 
 |         if (rs.mElement_SHORT_3 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_SHORT_3 == null) { | 
 |                     rs.mElement_SHORT_3 = createVector(rs, DataType.SIGNED_16, 3); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_SHORT_3; | 
 |     } | 
 |  | 
 |     public static Element I16_4(RenderScript rs) { | 
 |         if (rs.mElement_SHORT_4 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_SHORT_4 == null) { | 
 |                     rs.mElement_SHORT_4 = createVector(rs, DataType.SIGNED_16, 4); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_SHORT_4; | 
 |     } | 
 |  | 
 |     public static Element U32_2(RenderScript rs) { | 
 |         if (rs.mElement_UINT_2 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_UINT_2 == null) { | 
 |                     rs.mElement_UINT_2 = createVector(rs, DataType.UNSIGNED_32, 2); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_UINT_2; | 
 |     } | 
 |  | 
 |     public static Element U32_3(RenderScript rs) { | 
 |         if (rs.mElement_UINT_3 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_UINT_3 == null) { | 
 |                     rs.mElement_UINT_3 = createVector(rs, DataType.UNSIGNED_32, 3); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_UINT_3; | 
 |     } | 
 |  | 
 |     public static Element U32_4(RenderScript rs) { | 
 |         if (rs.mElement_UINT_4 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_UINT_4 == null) { | 
 |                     rs.mElement_UINT_4 = createVector(rs, DataType.UNSIGNED_32, 4); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_UINT_4; | 
 |     } | 
 |  | 
 |     public static Element I32_2(RenderScript rs) { | 
 |         if (rs.mElement_INT_2 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_INT_2 == null) { | 
 |                     rs.mElement_INT_2 = createVector(rs, DataType.SIGNED_32, 2); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_INT_2; | 
 |     } | 
 |  | 
 |     public static Element I32_3(RenderScript rs) { | 
 |         if (rs.mElement_INT_3 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_INT_3 == null) { | 
 |                     rs.mElement_INT_3 = createVector(rs, DataType.SIGNED_32, 3); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_INT_3; | 
 |     } | 
 |  | 
 |     public static Element I32_4(RenderScript rs) { | 
 |         if (rs.mElement_INT_4 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_INT_4 == null) { | 
 |                     rs.mElement_INT_4 = createVector(rs, DataType.SIGNED_32, 4); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_INT_4; | 
 |     } | 
 |  | 
 |     public static Element U64_2(RenderScript rs) { | 
 |         if (rs.mElement_ULONG_2 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_ULONG_2 == null) { | 
 |                     rs.mElement_ULONG_2 = createVector(rs, DataType.UNSIGNED_64, 2); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_ULONG_2; | 
 |     } | 
 |  | 
 |     public static Element U64_3(RenderScript rs) { | 
 |         if (rs.mElement_ULONG_3 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_ULONG_3 == null) { | 
 |                     rs.mElement_ULONG_3 = createVector(rs, DataType.UNSIGNED_64, 3); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_ULONG_3; | 
 |     } | 
 |  | 
 |     public static Element U64_4(RenderScript rs) { | 
 |         if (rs.mElement_ULONG_4 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_ULONG_4 == null) { | 
 |                     rs.mElement_ULONG_4 = createVector(rs, DataType.UNSIGNED_64, 4); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_ULONG_4; | 
 |     } | 
 |  | 
 |     public static Element I64_2(RenderScript rs) { | 
 |         if (rs.mElement_LONG_2 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_LONG_2 == null) { | 
 |                     rs.mElement_LONG_2 = createVector(rs, DataType.SIGNED_64, 2); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_LONG_2; | 
 |     } | 
 |  | 
 |     public static Element I64_3(RenderScript rs) { | 
 |         if (rs.mElement_LONG_3 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_LONG_3 == null) { | 
 |                     rs.mElement_LONG_3 = createVector(rs, DataType.SIGNED_64, 3); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_LONG_3; | 
 |     } | 
 |  | 
 |     public static Element I64_4(RenderScript rs) { | 
 |         if (rs.mElement_LONG_4 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_LONG_4 == null) { | 
 |                     rs.mElement_LONG_4 = createVector(rs, DataType.SIGNED_64, 4); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_LONG_4; | 
 |     } | 
 |  | 
 |     public static Element YUV(RenderScript rs) { | 
 |         if (rs.mElement_YUV == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_YUV == null) { | 
 |                     rs.mElement_YUV = createPixel(rs, DataType.UNSIGNED_8, DataKind.PIXEL_YUV); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_YUV; | 
 |     } | 
 |  | 
 |     public static Element MATRIX_4X4(RenderScript rs) { | 
 |         if (rs.mElement_MATRIX_4X4 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_MATRIX_4X4 == null) { | 
 |                     rs.mElement_MATRIX_4X4 = createUser(rs, DataType.MATRIX_4X4); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_MATRIX_4X4; | 
 |     } | 
 |  | 
 |     /** @deprecated use MATRIX_4X4 | 
 |     */ | 
 |     public static Element MATRIX4X4(RenderScript rs) { | 
 |         return MATRIX_4X4(rs); | 
 |     } | 
 |  | 
 |     public static Element MATRIX_3X3(RenderScript rs) { | 
 |         if (rs.mElement_MATRIX_3X3 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_MATRIX_3X3 == null) { | 
 |                     rs.mElement_MATRIX_3X3 = createUser(rs, DataType.MATRIX_3X3); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_MATRIX_3X3; | 
 |     } | 
 |  | 
 |     public static Element MATRIX_2X2(RenderScript rs) { | 
 |         if (rs.mElement_MATRIX_2X2 == null) { | 
 |             synchronized (rs) { | 
 |                 if (rs.mElement_MATRIX_2X2 == null) { | 
 |                     rs.mElement_MATRIX_2X2 = createUser(rs, DataType.MATRIX_2X2); | 
 |                 } | 
 |             } | 
 |         } | 
 |         return rs.mElement_MATRIX_2X2; | 
 |     } | 
 |  | 
 |     Element(long id, RenderScript rs, Element[] e, String[] n, int[] as) { | 
 |         super(id, rs); | 
 |         mSize = 0; | 
 |         mVectorSize = 1; | 
 |         mElements = e; | 
 |         mElementNames = n; | 
 |         mArraySizes = as; | 
 |         mType = DataType.NONE; | 
 |         mKind = DataKind.USER; | 
 |         mOffsetInBytes = new int[mElements.length]; | 
 |         for (int ct = 0; ct < mElements.length; ct++ ) { | 
 |             mOffsetInBytes[ct] = mSize; | 
 |             mSize += mElements[ct].mSize * mArraySizes[ct]; | 
 |         } | 
 |         updateVisibleSubElements(); | 
 |     } | 
 |  | 
 |     Element(long id, RenderScript rs, DataType dt, DataKind dk, boolean norm, int size) { | 
 |         super(id, rs); | 
 |         if ((dt != DataType.UNSIGNED_5_6_5) && | 
 |             (dt != DataType.UNSIGNED_4_4_4_4) && | 
 |             (dt != DataType.UNSIGNED_5_5_5_1)) { | 
 |             if (size == 3) { | 
 |                 mSize = dt.mSize * 4; | 
 |             } else { | 
 |                 mSize = dt.mSize * size; | 
 |             } | 
 |         } else { | 
 |             mSize = dt.mSize; | 
 |         } | 
 |         mType = dt; | 
 |         mKind = dk; | 
 |         mNormalized = norm; | 
 |         mVectorSize = size; | 
 |     } | 
 |  | 
 |     Element(long id, RenderScript rs) { | 
 |         super(id, rs); | 
 |     } | 
 |  | 
 |     @Override | 
 |     void updateFromNative() { | 
 |         super.updateFromNative(); | 
 |  | 
 |         // we will pack mType; mKind; mNormalized; mVectorSize; NumSubElements | 
 |         int[] dataBuffer = new int[5]; | 
 |         mRS.nElementGetNativeData(getID(mRS), dataBuffer); | 
 |  | 
 |         mNormalized = dataBuffer[2] == 1 ? true : false; | 
 |         mVectorSize = dataBuffer[3]; | 
 |         mSize = 0; | 
 |         for (DataType dt: DataType.values()) { | 
 |             if(dt.mID == dataBuffer[0]){ | 
 |                 mType = dt; | 
 |                 mSize = mType.mSize * mVectorSize; | 
 |             } | 
 |         } | 
 |         for (DataKind dk: DataKind.values()) { | 
 |             if(dk.mID == dataBuffer[1]){ | 
 |                 mKind = dk; | 
 |             } | 
 |         } | 
 |  | 
 |         int numSubElements = dataBuffer[4]; | 
 |         if(numSubElements > 0) { | 
 |             mElements = new Element[numSubElements]; | 
 |             mElementNames = new String[numSubElements]; | 
 |             mArraySizes = new int[numSubElements]; | 
 |             mOffsetInBytes = new int[numSubElements]; | 
 |  | 
 |             long[] subElementIds = new long[numSubElements]; | 
 |             mRS.nElementGetSubElements(getID(mRS), subElementIds, mElementNames, mArraySizes); | 
 |             for(int i = 0; i < numSubElements; i ++) { | 
 |                 mElements[i] = new Element(subElementIds[i], mRS); | 
 |                 mElements[i].updateFromNative(); | 
 |                 mOffsetInBytes[i] = mSize; | 
 |                 mSize += mElements[i].mSize * mArraySizes[i]; | 
 |             } | 
 |         } | 
 |         updateVisibleSubElements(); | 
 |     } | 
 |  | 
 |     /** | 
 |      * Create a custom Element of the specified DataType.  The DataKind will be | 
 |      * set to USER and the vector size to 1 indicating non-vector. | 
 |      * | 
 |      * @param rs The context associated with the new Element. | 
 |      * @param dt The DataType for the new element. | 
 |      * @return Element | 
 |      */ | 
 |     @UnsupportedAppUsage | 
 |     static Element createUser(RenderScript rs, DataType dt) { | 
 |         DataKind dk = DataKind.USER; | 
 |         boolean norm = false; | 
 |         int vecSize = 1; | 
 |         long id = rs.nElementCreate(dt.mID, dk.mID, norm, vecSize); | 
 |         return new Element(id, rs, dt, dk, norm, vecSize); | 
 |     } | 
 |  | 
 |     /** | 
 |      * Create a custom vector element of the specified DataType and vector size. | 
 |      * DataKind will be set to USER. Only primitive types (FLOAT_32, FLOAT_64, | 
 |      * SIGNED_8, SIGNED_16, SIGNED_32, SIGNED_64, UNSIGNED_8, UNSIGNED_16, | 
 |      * UNSIGNED_32, UNSIGNED_64, BOOLEAN) are supported. | 
 |      * | 
 |      * @param rs The context associated with the new Element. | 
 |      * @param dt The DataType for the new Element. | 
 |      * @param size Vector size for the new Element.  Range 2-4 inclusive | 
 |      *             supported. | 
 |      * | 
 |      * @return Element | 
 |      */ | 
 |     public static Element createVector(RenderScript rs, DataType dt, int size) { | 
 |         if (size < 2 || size > 4) { | 
 |             throw new RSIllegalArgumentException("Vector size out of range 2-4."); | 
 |         } | 
 |  | 
 |         switch (dt) { | 
 |         // Support only primitive integer/float/boolean types as vectors. | 
 |         case FLOAT_16: | 
 |         case FLOAT_32: | 
 |         case FLOAT_64: | 
 |         case SIGNED_8: | 
 |         case SIGNED_16: | 
 |         case SIGNED_32: | 
 |         case SIGNED_64: | 
 |         case UNSIGNED_8: | 
 |         case UNSIGNED_16: | 
 |         case UNSIGNED_32: | 
 |         case UNSIGNED_64: | 
 |         case BOOLEAN: { | 
 |             DataKind dk = DataKind.USER; | 
 |             boolean norm = false; | 
 |             long id = rs.nElementCreate(dt.mID, dk.mID, norm, size); | 
 |             return new Element(id, rs, dt, dk, norm, size); | 
 |         } | 
 |  | 
 |         default: { | 
 |             throw new RSIllegalArgumentException("Cannot create vector of " + | 
 |                 "non-primitive type."); | 
 |         } | 
 |         } | 
 |     } | 
 |  | 
 |     /** | 
 |      * Create a new pixel Element type.  A matching DataType and DataKind must | 
 |      * be provided.  The DataType and DataKind must contain the same number of | 
 |      * components.  Vector size will be set to 1. | 
 |      * | 
 |      * @param rs The context associated with the new Element. | 
 |      * @param dt The DataType for the new element. | 
 |      * @param dk The DataKind to specify the mapping of each component in the | 
 |      *           DataType. | 
 |      * | 
 |      * @return Element | 
 |      */ | 
 |     public static Element createPixel(RenderScript rs, DataType dt, DataKind dk) { | 
 |         if (!(dk == DataKind.PIXEL_L || | 
 |               dk == DataKind.PIXEL_A || | 
 |               dk == DataKind.PIXEL_LA || | 
 |               dk == DataKind.PIXEL_RGB || | 
 |               dk == DataKind.PIXEL_RGBA || | 
 |               dk == DataKind.PIXEL_DEPTH || | 
 |               dk == DataKind.PIXEL_YUV)) { | 
 |             throw new RSIllegalArgumentException("Unsupported DataKind"); | 
 |         } | 
 |         if (!(dt == DataType.UNSIGNED_8 || | 
 |               dt == DataType.UNSIGNED_16 || | 
 |               dt == DataType.UNSIGNED_5_6_5 || | 
 |               dt == DataType.UNSIGNED_4_4_4_4 || | 
 |               dt == DataType.UNSIGNED_5_5_5_1)) { | 
 |             throw new RSIllegalArgumentException("Unsupported DataType"); | 
 |         } | 
 |         if (dt == DataType.UNSIGNED_5_6_5 && dk != DataKind.PIXEL_RGB) { | 
 |             throw new RSIllegalArgumentException("Bad kind and type combo"); | 
 |         } | 
 |         if (dt == DataType.UNSIGNED_5_5_5_1 && dk != DataKind.PIXEL_RGBA) { | 
 |             throw new RSIllegalArgumentException("Bad kind and type combo"); | 
 |         } | 
 |         if (dt == DataType.UNSIGNED_4_4_4_4 && dk != DataKind.PIXEL_RGBA) { | 
 |             throw new RSIllegalArgumentException("Bad kind and type combo"); | 
 |         } | 
 |         if (dt == DataType.UNSIGNED_16 && | 
 |             dk != DataKind.PIXEL_DEPTH) { | 
 |             throw new RSIllegalArgumentException("Bad kind and type combo"); | 
 |         } | 
 |  | 
 |         int size = 1; | 
 |         switch (dk) { | 
 |         case PIXEL_LA: | 
 |             size = 2; | 
 |             break; | 
 |         case PIXEL_RGB: | 
 |             size = 3; | 
 |             break; | 
 |         case PIXEL_RGBA: | 
 |             size = 4; | 
 |             break; | 
 |         case PIXEL_DEPTH: | 
 |             size = 2; | 
 |             break; | 
 |         } | 
 |  | 
 |         boolean norm = true; | 
 |         long id = rs.nElementCreate(dt.mID, dk.mID, norm, size); | 
 |         return new Element(id, rs, dt, dk, norm, size); | 
 |     } | 
 |  | 
 |     /** | 
 |      * Check if the current Element is compatible with another Element. | 
 |      * Primitive Elements are compatible if they share the same underlying | 
 |      * size and type (i.e. U8 is compatible with A_8). User-defined Elements | 
 |      * must be equal in order to be compatible. This requires strict name | 
 |      * equivalence for all sub-Elements (in addition to structural equivalence). | 
 |      * | 
 |      * @param e The Element to check compatibility with. | 
 |      * | 
 |      * @return boolean true if the Elements are compatible, otherwise false. | 
 |      */ | 
 |     public boolean isCompatible(Element e) { | 
 |         // Try strict BaseObj equality to start with. | 
 |         if (this.equals(e)) { | 
 |             return true; | 
 |         } | 
 |  | 
 |         // Ignore mKind because it is allowed to be different (user vs. pixel). | 
 |         // We also ignore mNormalized because it can be different. The mType | 
 |         // field must not be NONE since we require name equivalence for | 
 |         // all user-created Elements. | 
 |         return ((mSize == e.mSize) && | 
 |                 (mType != DataType.NONE) && | 
 |                 (mType == e.mType) && | 
 |                 (mVectorSize == e.mVectorSize)); | 
 |     } | 
 |  | 
 |     /** | 
 |      * Builder class for producing complex elements with matching field and name | 
 |      * pairs.  The builder starts empty.  The order in which elements are added | 
 |      * is retained for the layout in memory. | 
 |      * | 
 |      */ | 
 |     public static class Builder { | 
 |         RenderScript mRS; | 
 |         Element[] mElements; | 
 |         String[] mElementNames; | 
 |         int[] mArraySizes; | 
 |         int mCount; | 
 |         int mSkipPadding; | 
 |  | 
 |         /** | 
 |          * Create a builder object. | 
 |          * | 
 |          * @param rs | 
 |          */ | 
 |         public Builder(RenderScript rs) { | 
 |             mRS = rs; | 
 |             mCount = 0; | 
 |             mElements = new Element[8]; | 
 |             mElementNames = new String[8]; | 
 |             mArraySizes = new int[8]; | 
 |         } | 
 |  | 
 |         /** | 
 |          * Add an array of elements to this element. | 
 |          * | 
 |          * @param element | 
 |          * @param name | 
 |          * @param arraySize | 
 |          */ | 
 |         public Builder add(Element element, String name, int arraySize) { | 
 |             if (arraySize < 1) { | 
 |                 throw new RSIllegalArgumentException("Array size cannot be less than 1."); | 
 |             } | 
 |  | 
 |             // Skip padding fields after a vector 3 type. | 
 |             if (mSkipPadding != 0) { | 
 |                 if (name.startsWith("#padding_")) { | 
 |                     mSkipPadding = 0; | 
 |                     return this; | 
 |                 } | 
 |             } | 
 |  | 
 |             if (element.mVectorSize == 3) { | 
 |                 mSkipPadding = 1; | 
 |             } else { | 
 |                 mSkipPadding = 0; | 
 |             } | 
 |  | 
 |             if(mCount == mElements.length) { | 
 |                 Element[] e = new Element[mCount + 8]; | 
 |                 String[] s = new String[mCount + 8]; | 
 |                 int[] as = new int[mCount + 8]; | 
 |                 System.arraycopy(mElements, 0, e, 0, mCount); | 
 |                 System.arraycopy(mElementNames, 0, s, 0, mCount); | 
 |                 System.arraycopy(mArraySizes, 0, as, 0, mCount); | 
 |                 mElements = e; | 
 |                 mElementNames = s; | 
 |                 mArraySizes = as; | 
 |             } | 
 |             mElements[mCount] = element; | 
 |             mElementNames[mCount] = name; | 
 |             mArraySizes[mCount] = arraySize; | 
 |             mCount++; | 
 |             return this; | 
 |         } | 
 |  | 
 |         /** | 
 |          * Add a single element to this Element. | 
 |          * | 
 |          * @param element | 
 |          * @param name | 
 |          */ | 
 |         public Builder add(Element element, String name) { | 
 |             return add(element, name, 1); | 
 |         } | 
 |  | 
 |         /** | 
 |          * Create the element from this builder. | 
 |          * | 
 |          * | 
 |          * @return Element | 
 |          */ | 
 |         public Element create() { | 
 |             mRS.validate(); | 
 |             Element[] ein = new Element[mCount]; | 
 |             String[] sin = new String[mCount]; | 
 |             int[] asin = new int[mCount]; | 
 |             java.lang.System.arraycopy(mElements, 0, ein, 0, mCount); | 
 |             java.lang.System.arraycopy(mElementNames, 0, sin, 0, mCount); | 
 |             java.lang.System.arraycopy(mArraySizes, 0, asin, 0, mCount); | 
 |  | 
 |             long[] ids = new long[ein.length]; | 
 |             for (int ct = 0; ct < ein.length; ct++ ) { | 
 |                 ids[ct] = ein[ct].getID(mRS); | 
 |             } | 
 |             long id = mRS.nElementCreate2(ids, sin, asin); | 
 |             return new Element(id, mRS, ein, sin, asin); | 
 |         } | 
 |     } | 
 | } | 
 |  |