1 /* ---------------------------------------------------------------- 2 * 3 * 4 * File Name: omxVCM4P10_FilterDeblockingLuma_HorEdge_I.c 5 * OpenMAX DL: v1.0.2 6 * Revision: 9641 7 * Date: Thursday, February 7, 2008 8 * 9 * (c) Copyright 2007-2008 ARM Limited. All Rights Reserved. 10 * 11 * 12 * 13 * H.264 luma deblock module 14 * 15 */ 16 17 #include "omxtypes.h" 18 #include "armOMX.h" 19 #include "omxVC.h" 20 21 #include "armCOMM.h" 22 #include "armVC.h" 23 24 /** 25 * Function: omxVCM4P10_FilterDeblockingLuma_HorEdge_I (6.3.3.3.2) 26 * 27 * Description: 28 * Performs in-place deblock filtering on four horizontal edges of the luma 29 * macroblock (16x16). 30 * 31 * Input Arguments: 32 * 33 * pSrcDst - pointer to the input macroblock; must be 16-byte aligned. 34 * srcdstStep -s tep of the arrays; must be a multiple of 16. 35 * pAlpha - array of size 2 of alpha thresholds (the first item is the alpha 36 * threshold for the external vertical edge, and the second item is 37 * for the internal horizontal edge); per [ISO14496-10] alpha 38 * values must be in the range [0,255]. 39 * pBeta - array of size 2 of beta thresholds (the first item is the beta 40 * threshold for the external horizontal edge, and the second item 41 * is for the internal horizontal edge). Per [ISO14496-10] beta 42 * values must be in the range [0,18]. 43 * pThresholds - array of size 16 containing thresholds, TC0, for the top 44 * horizontal edge of each 4x4 block, arranged in horizontal block 45 * order; must be aligned on a 4-byte boundary. Per [ISO14496 10] 46 * values must be in the range [0,25]. 47 * pBS - array of size 16 of BS parameters (arranged in horizontal block 48 * order); valid in the range [0,4] with the following 49 * restrictions: i) pBS[i]== 4 may occur only for 0<=i<=3, ii) 50 * pBS[i]== 4 if and only if pBS[i^3]== 4. Must be 4-byte aligned. 51 * 52 * Output Arguments: 53 * 54 * pSrcDst -Pointer to filtered output macroblock. 55 * 56 * Return Value: 57 * 58 * OMX_Sts_NoErr, if the function runs without error. 59 * 60 * OMX_Sts_BadArgErr, if one of the following cases occurs: 61 * - one or more of the following pointers is NULL: pSrcDst, pAlpha, 62 * pBeta, pThresholds, or pBS. 63 * - either pThresholds or pBS is not aligned on a 4-byte boundary. 64 * - pSrcDst is not 16-byte aligned. 65 * - srcdstStep is not a multiple of 16. 66 * - pAlpha[0] and/or pAlpha[1] is outside the range [0,255]. 67 * - pBeta[0] and/or pBeta[1] is outside the range [0,18]. 68 * - One or more entries in the table pThresholds[0..15] is 69 * outside of the range [0,25]. 70 * - pBS is out of range, i.e., one of the following conditions is true: 71 * pBS[i]<0, pBS[i]>4, pBS[i]==4 for i>=4, or 72 * (pBS[i]==4 && pBS[i^3]!=4) for 0<=i<=3. 73 * 74 */ 75 76 OMXResult omxVCM4P10_FilterDeblockingLuma_HorEdge_I( 77 OMX_U8* pSrcDst, 78 OMX_S32 srcdstStep, 79 const OMX_U8* pAlpha, 80 const OMX_U8* pBeta, 81 const OMX_U8* pThresholds, 82 const OMX_U8 *pBS 83 ) 84 { 85 int I, X, Y, Internal=0; 86 87 armRetArgErrIf(pSrcDst == NULL, OMX_Sts_BadArgErr); 88 armRetArgErrIf(armNot8ByteAligned(pSrcDst), OMX_Sts_BadArgErr); 89 armRetArgErrIf(srcdstStep & 7, OMX_Sts_BadArgErr); 90 armRetArgErrIf(pAlpha == NULL, OMX_Sts_BadArgErr); 91 armRetArgErrIf(pBeta == NULL, OMX_Sts_BadArgErr); 92 armRetArgErrIf(pThresholds == NULL, OMX_Sts_BadArgErr); 93 armRetArgErrIf(armNot4ByteAligned(pThresholds), OMX_Sts_BadArgErr); 94 armRetArgErrIf(pBS == NULL, OMX_Sts_BadArgErr); 95 armRetArgErrIf(armNot4ByteAligned(pBS), OMX_Sts_BadArgErr); 96 97 for (Y=0; Y<16; Y+=4, Internal=1) 98 { 99 for (X=0; X<16; X++) 100 { 101 I = (X>>2)+4*(Y>>2); 102 103 armRetArgErrIf(pBS[I] > 4, OMX_Sts_BadArgErr) 104 105 armRetArgErrIf( (I > 3) && (pBS[I] == 4), 106 OMX_Sts_BadArgErr) 107 108 armRetArgErrIf( (I < 4) && 109 ( (pBS[I] == 4) && (pBS[I^1] != 4) ), 110 OMX_Sts_BadArgErr) 111 112 /* Filter horizontal edge with q0 at (X,Y) */ 113 armVCM4P10_DeBlockPixel( 114 pSrcDst + Y*srcdstStep + X, 115 srcdstStep, 116 pThresholds[I], 117 pAlpha[Internal], 118 pBeta[Internal], 119 pBS[I], 120 0); 121 } 122 } 123 124 return OMX_Sts_NoErr; 125 } 126
