1/* 2 * Copyright (C) 2007-2008 ARM Limited 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 */ 17/** 18 * 19 * File Name: omxVCCOMM_Copy16x16.c 20 * OpenMAX DL: v1.0.2 21 * Revision: 9641 22 * Date: Thursday, February 7, 2008 23 * 24 * 25 * 26 * Description: 27 * MPEG4 16x16 Copy module 28 * 29 */ 30 31#include "omxtypes.h" 32#include "armOMX.h" 33#include "omxVC.h" 34 35#include "armCOMM.h" 36 37/** 38 * Function: omxVCCOMM_Copy16x16 (6.1.3.3.2) 39 * 40 * Description: 41 * Copies the reference 16x16 macroblock to the current macroblock. 42 * 43 * Input Arguments: 44 * 45 * pSrc - pointer to the reference macroblock in the source frame; must be 46 * aligned on a 16-byte boundary. 47 * step - distance between the starts of consecutive lines in the reference 48 * frame, in bytes; must be a multiple of 16 and must be larger 49 * than or equal to 16. 50 * 51 * Output Arguments: 52 * 53 * pDst - pointer to the destination macroblock; must be aligned on a 54 * 16-byte boundary. 55 * 56 * Return Value: 57 * 58 * OMX_Sts_NoErr - no error 59 * OMX_Sts_BadArgErr - bad arguments; returned under any of the following 60 * conditions: 61 * - one or more of the following pointers is NULL: pSrc, pDst 62 * - one or more of the following pointers is not aligned on a 16-byte 63 * boundary: pSrc, pDst 64 * - step <16 or step is not a multiple of 16. 65 * 66 */ 67 68OMXResult omxVCCOMM_Copy16x16( 69 const OMX_U8 *pSrc, 70 OMX_U8 *pDst, 71 OMX_INT step) 72 { 73 /* Definitions and Initializations*/ 74 75 OMX_INT count,index, x, y; 76 77 /* Argument error checks */ 78 armRetArgErrIf(pSrc == NULL, OMX_Sts_BadArgErr); 79 armRetArgErrIf(pDst == NULL, OMX_Sts_BadArgErr); 80 armRetArgErrIf(!armIs16ByteAligned(pSrc), OMX_Sts_BadArgErr); 81 armRetArgErrIf(!armIs16ByteAligned(pDst), OMX_Sts_BadArgErr); 82 armRetArgErrIf(((step < 16) || (step % 16)), OMX_Sts_BadArgErr); 83 84 85 /* Copying the ref 16x16 blk to the curr blk */ 86 for (y = 0, count = 0, index = 0; y < 16; y++, count = count + step - 16) 87 { 88 for (x = 0; x < 16; x++, count++, index++) 89 { 90 pDst[index] = pSrc[count]; 91 } 92 } 93 return OMX_Sts_NoErr; 94 } 95