1 /** 2 * 3 * File Name: omxVCM4P10_InterpolateHalfVer_Luma.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 * This function will calculate SAD for 4x4 blocks 13 * 14 */ 15 16 #include "omxtypes.h" 17 #include "armOMX.h" 18 #include "omxVC.h" 19 20 #include "armCOMM.h" 21 #include "armVC.h" 22 23 24 /** 25 * Function: omxVCM4P10_InterpolateHalfVer_Luma (6.3.5.5.2) 26 * 27 * Description: 28 * This function performs interpolation for two vertical 1/2-pel positions - 29 * (0, -1/2) and (0, 1/2) - around a full-pel position. 30 * 31 * Input Arguments: 32 * 33 * pSrc - Pointer to top-left corner of block used to interpolate in the 34 * reconstructed frame plane 35 * iSrcStep - Step of the source buffer. 36 * iDstStep - Step of the destination (interpolation) buffer; must be a 37 * multiple of iWidth. 38 * iWidth - Width of the current block; must be equal to either 4, 8, or 16 39 * iHeight - Height of the current block; must be equal to either 4, 8, or 16 40 * 41 * Output Arguments: 42 * 43 * pDstUp -Pointer to the interpolation buffer of the -pel position above 44 * the current full-pel position (0, -1/2) 45 * If iWidth==4, 4-byte alignment required. 46 * If iWidth==8, 8-byte alignment required. 47 * If iWidth==16, 16-byte alignment required. 48 * pDstDown -Pointer to the interpolation buffer of the -pel position below 49 * the current full-pel position (0, 1/2) 50 * If iWidth==4, 4-byte alignment required. 51 * If iWidth==8, 8-byte alignment required. 52 * If iWidth==16, 16-byte alignment required. 53 * 54 * Return Value: 55 * 56 * OMX_Sts_NoErr - no error 57 * OMX_Sts_BadArgErr - bad arguments; returned if any of the following 58 * conditions are true: 59 * - at least one of the following pointers is NULL: 60 * pSrc, pDstUp, or pDstDown 61 * - iWidth or iHeight have values other than 4, 8, or 16 62 * - iWidth==4 but pDstUp and/or pDstDown is/are not aligned on a 4-byte boundary 63 * - iWidth==8 but pDstUp and/or pDstDown is/are not aligned on a 8-byte boundary 64 * - iWidth==16 but pDstUp and/or pDstDown is/are not aligned on a 16-byte boundary 65 * 66 */ 67 OMXResult omxVCM4P10_InterpolateHalfVer_Luma( 68 const OMX_U8* pSrc, 69 OMX_U32 iSrcStep, 70 OMX_U8* pDstUp, 71 OMX_U8* pDstDown, 72 OMX_U32 iDstStep, 73 OMX_U32 iWidth, 74 OMX_U32 iHeight 75 ) 76 { 77 OMXResult RetValue; 78 79 /* check for argument error */ 80 armRetArgErrIf(pSrc == NULL, OMX_Sts_BadArgErr) 81 armRetArgErrIf(pDstUp == NULL, OMX_Sts_BadArgErr) 82 armRetArgErrIf(pDstDown == NULL, OMX_Sts_BadArgErr) 83 armRetArgErrIf((iWidth == 4) && 84 armNot4ByteAligned(pDstUp) && 85 armNot4ByteAligned(pDstDown), OMX_Sts_BadArgErr) 86 armRetArgErrIf((iWidth == 8) && 87 armNot8ByteAligned(pDstUp) && 88 armNot8ByteAligned(pDstDown), OMX_Sts_BadArgErr) 89 armRetArgErrIf((iWidth == 16) && 90 armNot16ByteAligned(pDstUp) && 91 armNot16ByteAligned(pDstDown), OMX_Sts_BadArgErr) 92 93 armRetArgErrIf((iHeight != 16) && (iHeight != 8)&& (iHeight != 4), OMX_Sts_BadArgErr) 94 armRetArgErrIf((iWidth != 16) && (iWidth != 8)&& (iWidth != 4), OMX_Sts_BadArgErr) 95 96 RetValue = armVCM4P10_InterpolateHalfVer_Luma( 97 pSrc - iSrcStep, 98 iSrcStep, 99 pDstUp, 100 iDstStep, 101 iWidth, 102 iHeight); 103 104 if (RetValue != OMX_Sts_NoErr) 105 { 106 return RetValue; 107 } 108 109 RetValue = armVCM4P10_InterpolateHalfVer_Luma( 110 pSrc, 111 iSrcStep, 112 pDstDown, 113 iDstStep, 114 iWidth, 115 iHeight); 116 117 return RetValue; 118 } 119 120 /***************************************************************************** 121 * END OF FILE 122 *****************************************************************************/ 123 124
