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_VerEdge_I.c 21 * OpenMAX DL: v1.0.2 22 * Revision: 9641 23 * Date: Thursday, February 7, 2008 24 * 25 * 26 * 27 * 28 * H.264 deblocking 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_VerEdge_I (6.3.3.3.3) 41 * 42 * Description: 43 * Performs in-place deblock filtering on four vertical 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 - Step of the arrays; must be a multiple of 8. 50 * pAlpha - Array of size 2 of alpha thresholds (the first item is alpha 51 * threshold for external vertical edge, and the second item is for 52 * internal vertical edge); per [ISO14496-10] alpha values must be 53 * in the range [0,255]. 54 * pBeta - Array of size 2 of beta thresholds (the first item is the beta 55 * threshold for the external vertical edge, and the second item is 56 * for the internal vertical edge); per [ISO14496-10] beta values 57 * must be in the range [0,18]. 58 * pThresholds - Array of size 8 containing thresholds, TC0, for the left 59 * vertical edge of each 4x2 chroma block, arranged in vertical 60 * block order; must be aligned on a 4-byte boundary. Per 61 * [ISO14496-10] values must be in the range [0,25]. 62 * pBS - Array of size 16 of BS parameters (values for each 2x2 chroma 63 * block, arranged in vertical block order). This parameter is the 64 * same as the pBSparameter passed into FilterDeblockLuma_VerEdge; 65 * valid in the range [0,4] with the following restrictions: i) 66 * pBS[i]== 4 may occur only for 0<=i<=3, ii) pBS[i]== 4 if and 67 * only if pBS[i^3]== 4. Must be 4 byte aligned. 68 * 69 * Output Arguments: 70 * 71 * pSrcDst -Pointer to filtered output macroblock. 72 * 73 * Return Value: 74 * 75 * OMX_Sts_NoErr, if the function runs without error. 76 * 77 * OMX_Sts_BadArgErr - bad arguments: if one of the following cases occurs: 78 * - one or more of the following pointers is NULL: pSrcDst, pAlpha, 79 * pBeta, pThresholds, or pBS. 80 * - pSrcDst is not 8-byte aligned. 81 * - srcdstStep is not a multiple of 8. 82 * - pThresholds is not 4-byte aligned. 83 * - pAlpha[0] and/or pAlpha[1] is outside the range [0,255]. 84 * - pBeta[0] and/or pBeta[1] is outside the range [0,18]. 85 * - One or more entries in the table pThresholds[0..7] is outside 86 * of the range [0,25]. 87 * - pBS is out of range, i.e., one of the following conditions is true: 88 * pBS[i]<0, pBS[i]>4, pBS[i]==4 for i>=4, or 89 * (pBS[i]==4 && pBS[i^3]!=4) for 0<=i<=3. 90 * - pBS is not 4-byte aligned. 91 * 92 */ 93 94 OMXResult omxVCM4P10_FilterDeblockingChroma_VerEdge_I( 95 OMX_U8* pSrcDst, 96 OMX_S32 srcdstStep, 97 const OMX_U8* pAlpha, 98 const OMX_U8* pBeta, 99 const OMX_U8* pThresholds, 100 const OMX_U8 *pBS 101 ) 102 { 103 int I, X, Y, Internal=0; 104 105 armRetArgErrIf(pSrcDst == NULL, OMX_Sts_BadArgErr); 106 armRetArgErrIf(armNot8ByteAligned(pSrcDst), OMX_Sts_BadArgErr); 107 armRetArgErrIf(srcdstStep & 7, OMX_Sts_BadArgErr); 108 armRetArgErrIf(pAlpha == NULL, OMX_Sts_BadArgErr); 109 armRetArgErrIf(pBeta == NULL, OMX_Sts_BadArgErr); 110 armRetArgErrIf(pThresholds == NULL, OMX_Sts_BadArgErr); 111 armRetArgErrIf(armNot4ByteAligned(pThresholds), OMX_Sts_BadArgErr); 112 armRetArgErrIf(pBS == NULL, OMX_Sts_BadArgErr); 113 armRetArgErrIf(armNot4ByteAligned(pBS), OMX_Sts_BadArgErr); 114 armRetArgErrIf(pBeta[0] > 18, OMX_Sts_BadArgErr); 115 armRetArgErrIf(pBeta[1] > 18, OMX_Sts_BadArgErr); 116 117 for (X=0; X<8; X+=4, Internal=1) 118 { 119 for (Y=0; Y<8; Y++) 120 { 121 I = (Y>>1)+4*(X>>1); 122 123 armRetArgErrIf(pBS[I] > 4, OMX_Sts_BadArgErr); 124 125 armRetArgErrIf( (I > 3) && (pBS[I] == 4), 126 OMX_Sts_BadArgErr); 127 128 armRetArgErrIf( ( (pBS[I] == 4) && (pBS[I^3] != 4) ), 129 OMX_Sts_BadArgErr); 130 armRetArgErrIf(pThresholds[Y] > 25, OMX_Sts_BadArgErr); 131 132 133 /* Filter vertical edge with q0 at (X,Y) */ 134 armVCM4P10_DeBlockPixel( 135 pSrcDst + Y*srcdstStep + X, 136 1, 137 pThresholds[(Y>>1)+4*(X>>2)], 138 pAlpha[Internal], 139 pBeta[Internal], 140 pBS[I], 141 1); 142 } 143 } 144 145 return OMX_Sts_NoErr; 146 } 147
