1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
/**
*
* File Name: omxVCM4P10_InterpolateChroma.c
* OpenMAX DL: v1.0.2
* Revision: 9641
* Date: Thursday, February 7, 2008
*
* (c) Copyright 2007-2008 ARM Limited. All Rights Reserved.
*
*
* Description:
* This function will calculate 1/8 Pixel interpolation for Chroma Block
*
*/
#include "omxtypes.h"
#include "armOMX.h"
#include "omxVC.h"
#include "armVC.h"
#include "armCOMM.h"
/**
* Function: omxVCM4P10_InterpolateChroma (6.3.3.2.2)
*
* Description:
* Performs 1/8-pixel interpolation for inter chroma MB.
*
* Input Arguments:
*
* pSrc -Pointer to the source reference frame buffer
* srcStep -Reference frame step in bytes
* dstStep -Destination frame step in bytes; must be a multiple of
* roi.width.
* dx -Fractional part of horizontal motion vector component in 1/8 pixel
* unit; valid in the range [0,7]
* dy -Fractional part of vertical motion vector component in 1/8 pixel
* unit; valid in the range [0,7]
* roi -Dimension of the interpolation region; the parameters roi.width and
* roi.height must be equal to either 2, 4, or 8.
*
* Output Arguments:
*
* pDst -Pointer to the destination frame buffer if roi.width==2, 2-byte
* alignment required if roi.width==4, 4-byte alignment required
* if roi.width==8, 8-byte alignment required
*
* Return Value:
* If the function runs without error, it returns OMX_Sts_NoErr.
* If one of the following cases occurs, the function returns
* OMX_Sts_BadArgErr:
* pSrc or pDst is NULL.
* srcStep or dstStep < 8.
* dx or dy is out of range [0-7].
* roi.width or roi.height is out of range {2,4,8}.
* roi.width is equal to 2, but pDst is not 2-byte aligned.
* roi.width is equal to 4, but pDst is not 4-byte aligned.
* roi.width is equal to 8, but pDst is not 8 byte aligned.
* srcStep or dstStep is not a multiple of 8.
*
*/
OMXResult omxVCM4P10_InterpolateChroma (
const OMX_U8* pSrc,
OMX_S32 srcStep,
OMX_U8* pDst,
OMX_S32 dstStep,
OMX_S32 dx,
OMX_S32 dy,
OMXSize roi
)
{
/* check for argument error */
armRetArgErrIf(pSrc == NULL, OMX_Sts_BadArgErr)
armRetArgErrIf(pDst == NULL, OMX_Sts_BadArgErr)
armRetArgErrIf(srcStep < 8, OMX_Sts_BadArgErr)
armRetArgErrIf(dstStep < 8, OMX_Sts_BadArgErr)
armRetArgErrIf(dx < 0, OMX_Sts_BadArgErr)
armRetArgErrIf(dx > 7, OMX_Sts_BadArgErr)
armRetArgErrIf(dy < 0, OMX_Sts_BadArgErr)
armRetArgErrIf(dy > 7, OMX_Sts_BadArgErr)
armRetArgErrIf((roi.width != 2) && (roi.width != 4) && (roi.width != 8), OMX_Sts_BadArgErr)
armRetArgErrIf((roi.height != 2) && (roi.height != 4) && (roi.height != 8), OMX_Sts_BadArgErr)
armRetArgErrIf((roi.width == 2) && armNot2ByteAligned(pDst), OMX_Sts_BadArgErr)
armRetArgErrIf((roi.width == 4) && armNot4ByteAligned(pDst), OMX_Sts_BadArgErr)
armRetArgErrIf((roi.width == 8) && armNot8ByteAligned(pDst), OMX_Sts_BadArgErr)
armRetArgErrIf(srcStep & 7, OMX_Sts_BadArgErr)
armRetArgErrIf(dstStep & 7, OMX_Sts_BadArgErr)
return armVCM4P10_Interpolate_Chroma
((OMX_U8*)pSrc, srcStep, pDst, dstStep, roi.width, roi.height, dx, dy);
}
/*****************************************************************************
* END OF FILE
*****************************************************************************/
|
