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 * 20 * File Name: omxVCM4P10_FilterDeblockingChroma_HorEdge_I.c 21 * OpenMAX DL: v1.0.2 22 * Revision: 9641 23 * Date: Thursday, February 7, 2008 24 * 25 * 26 * 27 * 28 * H.264 chroma deblock module 29 * 30 */ 31 32 #include "omxtypes.h" 33 #include "armOMX.h" 34 #include "omxVC.h" 35 36 #include "armCOMM.h" 37 #include "armVC.h" 38 39 /** 40 * Function: omxVCM4P10_FilterDeblockingChroma_HorEdge_I (6.3.3.3.4) 41 * 42 * Description: 43 * Performs in-place deblock filtering on the horizontal edges of the chroma 44 * macroblock (8x8). 45 * 46 * Input Arguments: 47 * 48 * pSrcDst - pointer to the input macroblock; must be 8-byte aligned. 49 * srcdstStep - array step; must be a multiple of 8. 50 * pAlpha - array of size 2 containing alpha thresholds; the first element 51 * contains the threshold for the external horizontal edge, and the 52 * second element contains the threshold for internal horizontal 53 * edge. Per [ISO14496-10] alpha values must be in the range 54 * [0,255]. 55 * pBeta - array of size 2 containing beta thresholds; the first element 56 * contains the threshold for the external horizontal edge, and the 57 * second element contains the threshold for the internal 58 * horizontal edge. Per [ISO14496-10] beta values must be in the 59 * range [0,18]. 60 * pThresholds - array of size 8 containing thresholds, TC0, for the top 61 * horizontal edge of each 2x4 chroma block, arranged in horizontal 62 * block order; must be aligned on a 4-byte boundary. Per 63 * [ISO14496-10] values must be in the range [0,25]. 64 * pBS - array of size 16 containing BS parameters for each 2x2 chroma 65 * block, arranged in horizontal block order; valid in the range 66 * [0,4] with the following restrictions: i) pBS[i]== 4 may occur 67 * only for 0<=i<=3, ii) pBS[i]== 4 if and only if pBS[i^3]== 4. 68 * Must be 4-byte aligned. 69 * 70 * Output Arguments: 71 * 72 * pSrcDst -Pointer to filtered output macroblock. 73 * 74 * Return Value: 75 * 76 * OMX_Sts_NoErr, if the function runs without error. 77 * 78 * OMX_Sts_BadArgErr, if one of the following cases occurs: 79 * - any of the following pointers is NULL: 80 * pSrcDst, pAlpha, pBeta, pThresholds, or pBS. 81 * - pSrcDst is not 8-byte aligned. 82 * - srcdstStep is not a multiple of 8. 83 * - pThresholds is not 4-byte aligned. 84 * - pAlpha[0] and/or pAlpha[1] is outside the range [0,255]. 85 * - pBeta[0] and/or pBeta[1] is outside the range [0,18]. 86 * - One or more entries in the table pThresholds[0..7] is outside 87 * of the range [0,25]. 88 * - pBS is out of range, i.e., one of the following conditions is true: 89 * pBS[i]<0, pBS[i]>4, pBS[i]==4 for i>=4, or 90 * (pBS[i]==4 && pBS[i^3]!=4) for 0<=i<=3. 91 * - pBS is not 4-byte aligned. 92 * 93 */ 94 95 OMXResult omxVCM4P10_FilterDeblockingChroma_HorEdge_I( 96 OMX_U8* pSrcDst, 97 OMX_S32 srcdstStep, 98 const OMX_U8* pAlpha, 99 const OMX_U8* pBeta, 100 const OMX_U8* pThresholds, 101 const OMX_U8 *pBS 102 ) 103 { 104 int I, X, Y, Internal=0; 105 106 armRetArgErrIf(pSrcDst == NULL, OMX_Sts_BadArgErr); 107 armRetArgErrIf(armNot8ByteAligned(pSrcDst), OMX_Sts_BadArgErr); 108 armRetArgErrIf(srcdstStep & 7, OMX_Sts_BadArgErr); 109 armRetArgErrIf(pAlpha == NULL, OMX_Sts_BadArgErr); 110 armRetArgErrIf(pBeta == NULL, OMX_Sts_BadArgErr); 111 armRetArgErrIf(pThresholds == NULL, OMX_Sts_BadArgErr); 112 armRetArgErrIf(armNot4ByteAligned(pThresholds), OMX_Sts_BadArgErr); 113 armRetArgErrIf(pBS == NULL, OMX_Sts_BadArgErr); 114 armRetArgErrIf(armNot4ByteAligned(pBS), OMX_Sts_BadArgErr); 115 116 for (Y=0; Y<8; Y+=4, Internal=1) 117 { 118 for (X=0; X<8; X++) 119 { 120 I = (X>>1)+4*(Y>>1); 121 122 armRetArgErrIf(pBS[I] > 4, OMX_Sts_BadArgErr) 123 124 armRetArgErrIf( (I > 3) && (pBS[I] == 4), 125 OMX_Sts_BadArgErr) 126 127 armRetArgErrIf( (I < 4) && 128 ( (pBS[I] == 4) && (pBS[I^1] != 4) ), 129 OMX_Sts_BadArgErr) 130 131 132 /* Filter horizontal edge with q0 at (X,Y) */ 133 armVCM4P10_DeBlockPixel( 134 pSrcDst + Y*srcdstStep + X, 135 srcdstStep, 136 pThresholds[(X>>1)+4*(Y>>2)], 137 pAlpha[Internal], 138 pBeta[Internal], 139 pBS[I], 140 1); 141 } 142 } 143 144 return OMX_Sts_NoErr; 145 } 146
