1 /** 2 * 3 * File Name: omxVCCOMM_Copy16x16.c 4 * OpenMAX DL: v1.0.2 5 * Revision: 9641 6 * Date: Thursday, February 7, 2008 7 * 8 * (c) Copyright 2007-2008 ARM Limited. All Rights Reserved. 9 * 10 * 11 * Description: 12 * MPEG4 16x16 Copy module 13 * 14 */ 15 16 #include "omxtypes.h" 17 #include "armOMX.h" 18 #include "omxVC.h" 19 20 #include "armCOMM.h" 21 22 /** 23 * Function: omxVCCOMM_Copy16x16 (6.1.3.3.2) 24 * 25 * Description: 26 * Copies the reference 16x16 macroblock to the current macroblock. 27 * 28 * Input Arguments: 29 * 30 * pSrc - pointer to the reference macroblock in the source frame; must be 31 * aligned on a 16-byte boundary. 32 * step - distance between the starts of consecutive lines in the reference 33 * frame, in bytes; must be a multiple of 16 and must be larger 34 * than or equal to 16. 35 * 36 * Output Arguments: 37 * 38 * pDst - pointer to the destination macroblock; must be aligned on a 39 * 16-byte boundary. 40 * 41 * Return Value: 42 * 43 * OMX_Sts_NoErr - no error 44 * OMX_Sts_BadArgErr - bad arguments; returned under any of the following 45 * conditions: 46 * - one or more of the following pointers is NULL: pSrc, pDst 47 * - one or more of the following pointers is not aligned on a 16-byte 48 * boundary: pSrc, pDst 49 * - step <16 or step is not a multiple of 16. 50 * 51 */ 52 53 OMXResult omxVCCOMM_Copy16x16( 54 const OMX_U8 *pSrc, 55 OMX_U8 *pDst, 56 OMX_INT step) 57 { 58 /* Definitions and Initializations*/ 59 60 OMX_INT count,index, x, y; 61 62 /* Argument error checks */ 63 armRetArgErrIf(pSrc == NULL, OMX_Sts_BadArgErr); 64 armRetArgErrIf(pDst == NULL, OMX_Sts_BadArgErr); 65 armRetArgErrIf(!armIs16ByteAligned(pSrc), OMX_Sts_BadArgErr); 66 armRetArgErrIf(!armIs16ByteAligned(pDst), OMX_Sts_BadArgErr); 67 armRetArgErrIf(((step < 16) || (step % 16)), OMX_Sts_BadArgErr); 68 69 70 /* Copying the ref 16x16 blk to the curr blk */ 71 for (y = 0, count = 0, index = 0; y < 16; y++, count = count + step - 16) 72 { 73 for (x = 0; x < 16; x++, count++, index++) 74 { 75 pDst[index] = pSrc[count]; 76 } 77 } 78 return OMX_Sts_NoErr; 79 } 80
