1 /** 2 * 3 * File Name: omxVCM4P10_InterpolateChroma.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 1/8 Pixel interpolation for Chroma Block 13 * 14 */ 15 16 #include "omxtypes.h" 17 #include "armOMX.h" 18 #include "omxVC.h" 19 20 #include "armVC.h" 21 #include "armCOMM.h" 22 23 24 /** 25 * Function: omxVCM4P10_InterpolateChroma (6.3.3.2.2) 26 * 27 * Description: 28 * Performs 1/8-pixel interpolation for inter chroma MB. 29 * 30 * Input Arguments: 31 * 32 * pSrc -Pointer to the source reference frame buffer 33 * srcStep -Reference frame step in bytes 34 * dstStep -Destination frame step in bytes; must be a multiple of 35 * roi.width. 36 * dx -Fractional part of horizontal motion vector component in 1/8 pixel 37 * unit; valid in the range [0,7] 38 * dy -Fractional part of vertical motion vector component in 1/8 pixel 39 * unit; valid in the range [0,7] 40 * roi -Dimension of the interpolation region; the parameters roi.width and 41 * roi.height must be equal to either 2, 4, or 8. 42 * 43 * Output Arguments: 44 * 45 * pDst -Pointer to the destination frame buffer if roi.width==2, 2-byte 46 * alignment required if roi.width==4, 4-byte alignment required 47 * if roi.width==8, 8-byte alignment required 48 * 49 * Return Value: 50 * If the function runs without error, it returns OMX_Sts_NoErr. 51 * If one of the following cases occurs, the function returns 52 * OMX_Sts_BadArgErr: 53 * pSrc or pDst is NULL. 54 * srcStep or dstStep < 8. 55 * dx or dy is out of range [0-7]. 56 * roi.width or roi.height is out of range {2,4,8}. 57 * roi.width is equal to 2, but pDst is not 2-byte aligned. 58 * roi.width is equal to 4, but pDst is not 4-byte aligned. 59 * roi.width is equal to 8, but pDst is not 8 byte aligned. 60 * srcStep or dstStep is not a multiple of 8. 61 * 62 */ 63 64 OMXResult omxVCM4P10_InterpolateChroma ( 65 const OMX_U8* pSrc, 66 OMX_S32 srcStep, 67 OMX_U8* pDst, 68 OMX_S32 dstStep, 69 OMX_S32 dx, 70 OMX_S32 dy, 71 OMXSize roi 72 ) 73 { 74 /* check for argument error */ 75 armRetArgErrIf(pSrc == NULL, OMX_Sts_BadArgErr) 76 armRetArgErrIf(pDst == NULL, OMX_Sts_BadArgErr) 77 armRetArgErrIf(srcStep < 8, OMX_Sts_BadArgErr) 78 armRetArgErrIf(dstStep < 8, OMX_Sts_BadArgErr) 79 armRetArgErrIf(dx < 0, OMX_Sts_BadArgErr) 80 armRetArgErrIf(dx > 7, OMX_Sts_BadArgErr) 81 armRetArgErrIf(dy < 0, OMX_Sts_BadArgErr) 82 armRetArgErrIf(dy > 7, OMX_Sts_BadArgErr) 83 armRetArgErrIf((roi.width != 2) && (roi.width != 4) && (roi.width != 8), OMX_Sts_BadArgErr) 84 armRetArgErrIf((roi.height != 2) && (roi.height != 4) && (roi.height != 8), OMX_Sts_BadArgErr) 85 armRetArgErrIf((roi.width == 2) && armNot2ByteAligned(pDst), OMX_Sts_BadArgErr) 86 armRetArgErrIf((roi.width == 4) && armNot4ByteAligned(pDst), OMX_Sts_BadArgErr) 87 armRetArgErrIf((roi.width == 8) && armNot8ByteAligned(pDst), OMX_Sts_BadArgErr) 88 armRetArgErrIf(srcStep & 7, OMX_Sts_BadArgErr) 89 armRetArgErrIf(dstStep & 7, OMX_Sts_BadArgErr) 90 91 return armVCM4P10_Interpolate_Chroma 92 ((OMX_U8*)pSrc, srcStep, pDst, dstStep, roi.width, roi.height, dx, dy); 93 } 94 95 96 /***************************************************************************** 97 * END OF FILE 98 *****************************************************************************/ 99 100
