omxVCM4P10_DeblockChroma_I.c revision 78e52bfac041d71ce53b5b13c2abf78af742b09d 
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_DeblockChroma_I.c
21 * OpenMAX DL: v1.0.2
22 * Revision:   9641
23 * Date:       Thursday, February 7, 2008
24 *
25 *
26 *
27 *
28 * H.264 intra chroma deblock
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_DeblockChroma_I   (6.3.3.3.6)
41 *
42 * Description:
43 * Performs in-place deblocking filtering on all edges of the chroma
44 * macroblock (16x16).
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 - pointer to a 2x2 array of alpha thresholds, organized as
51 *            follows: {external vertical edge, internal vertical edge,
52 *            external horizontal edge, internal horizontal edge }.  Per
53 *            [ISO14496-10] alpha values must be in the range [0,255].
54 *   pBeta - pointer to a 2x2 array of Beta Thresholds, organized as follows:
55 *            { external vertical edge, internal vertical edge, external
56 *            horizontal edge, internal horizontal edge }.  Per [ISO14496-10]
57 *            beta values must be in the range [0,18].
58 *   pThresholds - array of size 8x2 of Thresholds (TC0) (values for the left
59 *            or above edge of each 4x2 or 2x4 block, arranged in vertical
60 *            block order and then in horizontal block order); must be aligned
61 *            on a 4-byte boundary. Per [ISO14496-10] values must be in the
62 *            range [0,25].
63 *   pBS - array of size 16x2 of BS parameters (arranged in scan block order
64 *            for vertical edges and then horizontal edges); valid in the
65 *            range [0,4] with the following restrictions: i) pBS[i]== 4 may
66 *            occur only for 0<=i<=3, ii) pBS[i]== 4 if and only if pBS[i^3]==
67 *            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 - no error
76 *    OMX_Sts_BadArgErr - bad arguments
77 *    -    one or more of the following pointers is NULL: pSrcDst, pAlpha,
78 *              pBeta, pThresholds, or pBS. pSrcDst is not 8-byte aligned.
79 *              either pThresholds or pBS is not 4-byte aligned.
80 *    -   one or more entries in the table pAlpha[0..3] is outside the range
81 *              [0,255].
82 *    -   one or more entries in the table pBeta[0..3] is outside the range
83 *              [0,18].
84 *    -   one or more entries in the table pThresholds[0..15]is outside of
85 *              the range [0,25].
86 *    -   pBS is out of range, i.e., one of the following conditions is true:
87 *            pBS[i]<0, pBS[i]>4, pBS[i]==4  for i>=4, or
88 *            (pBS[i]==4 && pBS[i^3]!=4) for 0<=i<=3.
89 *    -   srcdstStep is not a multiple of 8.
90 *
91 */
92OMXResult omxVCM4P10_DeblockChroma_I(
93	OMX_U8* pSrcDst,
94	OMX_S32 srcdstStep,
95	const OMX_U8* pAlpha,
96	const OMX_U8* pBeta,
97	const OMX_U8* pThresholds,
98    const OMX_U8 *pBS
99)
100{
101    OMXResult errorCode;
102
103    armRetArgErrIf(pSrcDst == NULL,                 OMX_Sts_BadArgErr);
104    armRetArgErrIf(armNot8ByteAligned(pSrcDst),     OMX_Sts_BadArgErr);
105    armRetArgErrIf(srcdstStep & 7,                  OMX_Sts_BadArgErr);
106    armRetArgErrIf(pAlpha == NULL,                  OMX_Sts_BadArgErr);
107    armRetArgErrIf(pBeta == NULL,                   OMX_Sts_BadArgErr);
108    armRetArgErrIf(pThresholds == NULL,             OMX_Sts_BadArgErr);
109    armRetArgErrIf(armNot4ByteAligned(pThresholds), OMX_Sts_BadArgErr);
110    armRetArgErrIf(pBS == NULL,                     OMX_Sts_BadArgErr);
111    armRetArgErrIf(armNot4ByteAligned(pBS),         OMX_Sts_BadArgErr);
112
113    errorCode = omxVCM4P10_FilterDeblockingChroma_VerEdge_I(
114        pSrcDst, srcdstStep, pAlpha, pBeta, pThresholds, pBS);
115
116    armRetArgErrIf(errorCode != OMX_Sts_NoErr, errorCode)
117
118    errorCode = omxVCM4P10_FilterDeblockingChroma_HorEdge_I(
119        pSrcDst, srcdstStep, pAlpha+2, pBeta+2, pThresholds+8, pBS+16);
120
121    return errorCode;
122}
123