1mlib_VideoIDCT8x8_U8_S16_DCm(e3dMiLaILBi)b Library Fumnlcitbi_oVnisdeoIDCT8x8_U8_S16_DC(3MLIB)
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6 mlib_VideoIDCT8x8_U8_S16_DC - inverse Discrete Cosine Transform
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9 cc [ flag... ] file... -lmlib [ library... ]
10 #include <mlib.h>
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12 mlib_status mlib_VideoIDCT8x8_U8_S16_DC(mlib_u8 *block,
13 const mlib_s16 *coeffs, mlib_s32 stride);
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17 The mlib_VideoIDCT8x8_U8_S16_DC() function can be used only when F(0,0)
18 is nonzero. It computes the inverse DCT (called IDCT) for the destina‐
19 tion IDCT block of data type mlib_u8 and source DCT coefficients of
20 data type mlib_s16. This function is not guaranteed to be
21 IEEE-1180-compliant. The output of the IDCT routine is the difference
22 between the current block and the reference block. The difference pixel
23 can occupy nine bits and is represented as a 16-bit datum. The output
24 must be added to the motion-compensated reference block in order to
25 reconstruct the current block.
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28 The function takes the following arguments:
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30 block Pointer to the current block. block must be 8-byte aligned.
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33 coeffs Pointer to the source DCT coefficients. coeffs must be 8-byte
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37 stride Stride, in bytes, between adjacent rows in a block. stride
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42 The function returns MLIB_SUCCESS if successful. Otherwise it returns
43 MLIB_FAILURE.
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46 See attributes(5) for descriptions of the following attributes:
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51 ┌─────────────────────────────┬─────────────────────────────┐
52 │ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
53 ├─────────────────────────────┼─────────────────────────────┤
54 │Interface Stability │Committed │
55 ├─────────────────────────────┼─────────────────────────────┤
56 │MT-Level │MT-Safe │
57 └─────────────────────────────┴─────────────────────────────┘
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60 mlib_VideoIDCT_IEEE_S16_S16(3MLIB), mlib_VideoIDCT8x8_S16_S16(3MLIB),
61 mlib_VideoIDCT8x8_S16_S16_DC(3MLIB),
62 mlib_VideoIDCT8x8_S16_S16_NA(3MLIB),
63 mlib_VideoIDCT8x8_S16_S16_Q1(3MLIB), mlib_VideoIDCT8x8_U8_S16(3MLIB),
64 mlib_VideoIDCT8x8_U8_S16_NA(3MLIB), mlib_VideoIDCT8x8_U8_S16_Q1(3MLIB),
65 attributes(5)
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69SunOS 5.11 2 Mar 2007mlib_VideoIDCT8x8_U8_S16_DC(3MLIB)