omxVCM4P10_DeblockChroma_I.c revision 0c1bc742181ded4930842b46e9507372f0b1b963 
1/* ----------------------------------------------------------------
2 *
3 *
4 * File Name:  omxVCM4P10_DeblockChroma_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 intra chroma deblock
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_DeblockChroma_I   (6.3.3.3.6)
26 *
27 * Description:
28 * Performs in-place deblocking filtering on all edges of the chroma
29 * macroblock (16x16).
30 *
31 * Input Arguments:
32 *
33 *   pSrcDst - pointer to the input macroblock; must be 8-byte aligned.
34 *   srcdstStep - step of the arrays; must be a multiple of 8.
35 *   pAlpha - pointer to a 2x2 array of alpha thresholds, organized as
36 *            follows: {external vertical edge, internal vertical edge,
37 *            external horizontal edge, internal horizontal edge }.  Per
38 *            [ISO14496-10] alpha values must be in the range [0,255].
39 *   pBeta - pointer to a 2x2 array of Beta Thresholds, organized as follows:
40 *            { external vertical edge, internal vertical edge, external
41 *            horizontal edge, internal horizontal edge }.  Per [ISO14496-10]
42 *            beta values must be in the range [0,18].
43 *   pThresholds - array of size 8x2 of Thresholds (TC0) (values for the left
44 *            or above edge of each 4x2 or 2x4 block, arranged in vertical
45 *            block order and then in horizontal block order); must be aligned
46 *            on a 4-byte boundary. Per [ISO14496-10] values must be in the
47 *            range [0,25].
48 *   pBS - array of size 16x2 of BS parameters (arranged in scan block order
49 *            for vertical edges and then horizontal edges); valid in the
50 *            range [0,4] with the following restrictions: i) pBS[i]== 4 may
51 *            occur only for 0<=i<=3, ii) pBS[i]== 4 if and only if pBS[i^3]==
52 *            4.  Must be 4-byte aligned.
53 *
54 * Output Arguments:
55 *
56 *   pSrcDst - pointer to filtered output macroblock.
57 *
58 * Return Value:
59 *
60 *    OMX_Sts_NoErr - no error
61 *    OMX_Sts_BadArgErr - bad arguments
62 *    -    one or more of the following pointers is NULL: pSrcDst, pAlpha,
63 *              pBeta, pThresholds, or pBS. pSrcDst is not 8-byte aligned.
64 *              either pThresholds or pBS is not 4-byte aligned.
65 *    -   one or more entries in the table pAlpha[0..3] is outside the range
66 *              [0,255].
67 *    -   one or more entries in the table pBeta[0..3] is outside the range
68 *              [0,18].
69 *    -   one or more entries in the table pThresholds[0..15]is outside of
70 *              the range [0,25].
71 *    -   pBS is out of range, i.e., one of the following conditions is true:
72 *            pBS[i]<0, pBS[i]>4, pBS[i]==4  for i>=4, or
73 *            (pBS[i]==4 && pBS[i^3]!=4) for 0<=i<=3.
74 *    -   srcdstStep is not a multiple of 8.
75 *
76 */
77OMXResult omxVCM4P10_DeblockChroma_I(
78	OMX_U8* pSrcDst,
79	OMX_S32 srcdstStep,
80	const OMX_U8* pAlpha,
81	const OMX_U8* pBeta,
82	const OMX_U8* pThresholds,
83    const OMX_U8 *pBS
84)
85{
86    OMXResult errorCode;
87
88    armRetArgErrIf(pSrcDst == NULL,                 OMX_Sts_BadArgErr);
89    armRetArgErrIf(armNot8ByteAligned(pSrcDst),     OMX_Sts_BadArgErr);
90    armRetArgErrIf(srcdstStep & 7,                  OMX_Sts_BadArgErr);
91    armRetArgErrIf(pAlpha == NULL,                  OMX_Sts_BadArgErr);
92    armRetArgErrIf(pBeta == NULL,                   OMX_Sts_BadArgErr);
93    armRetArgErrIf(pThresholds == NULL,             OMX_Sts_BadArgErr);
94    armRetArgErrIf(armNot4ByteAligned(pThresholds), OMX_Sts_BadArgErr);
95    armRetArgErrIf(pBS == NULL,                     OMX_Sts_BadArgErr);
96    armRetArgErrIf(armNot4ByteAligned(pBS),         OMX_Sts_BadArgErr);
97
98    errorCode = omxVCM4P10_FilterDeblockingChroma_VerEdge_I(
99        pSrcDst, srcdstStep, pAlpha, pBeta, pThresholds, pBS);
100
101    armRetArgErrIf(errorCode != OMX_Sts_NoErr, errorCode)
102
103    errorCode = omxVCM4P10_FilterDeblockingChroma_HorEdge_I(
104        pSrcDst, srcdstStep, pAlpha+2, pBeta+2, pThresholds+8, pBS+16);
105
106    return errorCode;
107}
108