1mlib_ImageConstDivShift_Inpm(e3dMiLaILBi)b Library Fumnlcitbi_oInmsageConstDivShift_Inp(3MLIB)
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6 mlib_ImageConstDivShift_Inp - division into a constant, with shifting
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9 cc [ flag... ] file... -lmlib [ library... ]
10 #include <mlib.h>
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12 mlib_status mlib_ImageConstDivShift_Inp(mlib_image *srcdst,
13 const mlib_s32 *c, mlib_s32 shift);
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17 The mlib_ImageConstDivShift_Inp() function divides each pixel in an
18 image into a constant value on a pixel-by-pixel basis, in place. It
19 scales the result by a left shift and writes the result to the image on
20 a pixel-by-pixel basis.
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23 It uses the following equation:
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25 srcdst[x][y][i] = c[i] / srcdst[x][y][i] * 2**shift
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29 In the case of srcdst[x][y][i] = 0,
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31 srcdst[x][y][i] = 0 if c[i] = 0
32 srcdst[x][y][i] = DATA_TYPE_MAX if c[i] > 0
33 srcdst[x][y][i] = DATA_TYPE_MIN if c[i] < 0
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37 where DATA_TYPE is MLIB_U8, MLIB_S16, MLIB_U16, or MLIB_S32 for an
38 image of type MLIB_BYTE, MLIB_SHORT, MLIB_USHORT, or MLIB_INT, respec‐
39 tively.
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42 The function takes the following arguments:
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44 srcdst Pointer to source and destination image.
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47 c Constant into which each pixel is divided. c[i] contains the
48 constant for channel i.
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51 shift Left shifting factor. 0 ≤ shift ≤ 31.
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55 The function returns MLIB_SUCCESS if successful. Otherwise it returns
56 MLIB_FAILURE.
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59 See attributes(5) for descriptions of the following attributes:
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64 ┌─────────────────────────────┬─────────────────────────────┐
65 │ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
66 ├─────────────────────────────┼─────────────────────────────┤
67 │Interface Stability │Committed │
68 ├─────────────────────────────┼─────────────────────────────┤
69 │MT-Level │MT-Safe │
70 └─────────────────────────────┴─────────────────────────────┘
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73 mlib_ImageConstDiv(3MLIB), mlib_ImageConstDiv_Fp(3MLIB), mlib_ImageCon‐
74 stDiv_Fp_Inp(3MLIB), mlib_ImageConstDiv_Inp(3MLIB), mlib_ImageConstDi‐
75 vShift(3MLIB), attributes(5)
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79SunOS 5.11 2 Mar 2007mlib_ImageConstDivShift_Inp(3MLIB)