1mlib_VideoColorRGB2JFIFYCC4m4e4d_iSa1L6i(b3MLLiIbBrm)alriyb_FVuindcetoiCoonlsorRGB2JFIFYCC444_S16(3MLIB)
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6 mlib_VideoColorRGB2JFIFYCC444_S16 - RGB to JFIF YCbCr color conversion
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9 cc [ flag... ] file... -lmlib [ library... ]
10 #include <mlib.h>
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12 mlib_status mlib_VideoColorRGB2JFIFYCC444_S16(mlib_s16 *y, mlib_s16 *cb,
13 mlib_s16 *cr, const mlib_s16 *rgb, mlib_s32 n);
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17 The mlib_VideoColorRGB2JFIFYCC444_S16() function performs color space
18 conversion from RGB to YCbCr when used in the JPEG File Interchange
19 Format (JFIF).
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22 Both the input RGB components and the output YCbCr components are sup‐
23 posed to be in the range of [0, 4095].
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26 The following equation is used:
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28 Y = 0.29900 * R + 0.58700 * G + 0.11400 * B
29 Cb = -0.16874 * R - 0.33126 * G + 0.50000 * B + 2048
30 Cr = 0.50000 * R - 0.41869 * G - 0.08131 * B + 2048
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34 The function takes the following arguments:
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36 y Pointer to destination Y component row. y must be 8-byte
37 aligned.
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40 cb Pointer to destination Cb component row. cb must be 8-byte
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44 cr Pointer to destination Cr component row. cr must be 8-byte
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48 rgb Pointer to source RGB multi-component row. rgb must be 8-byte
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52 n Length of Y component row. The length of Cb and Cr component
53 rows must be n. The length of the RGB multi-component row must
54 be 3*n.
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58 The function returns MLIB_SUCCESS if successful. Otherwise it returns
59 MLIB_FAILURE.
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62 See attributes(5) for descriptions of the following attributes:
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67 ┌─────────────────────────────┬─────────────────────────────┐
68 │ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
69 ├─────────────────────────────┼─────────────────────────────┤
70 │Interface Stability │Committed │
71 ├─────────────────────────────┼─────────────────────────────┤
72 │MT-Level │MT-Safe │
73 └─────────────────────────────┴─────────────────────────────┘
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76 mlib_VideoColorABGR2JFIFYCC444(3MLIB), mlib_VideoColorARGB2JFI‐
77 FYCC444(3MLIB), mlib_VideoColorRGB2JFIFYCC444(3MLIB), attributes(5)
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81SunOS 5.11 23 Mamyli2b0_0V7ideoColorRGB2JFIFYCC444_S16(3MLIB)