1mlib_VideoIDCT8x8_U8_S16_DCm(e3dMiLaILBi)b Library Fumnlcitbi_oVnisdeoIDCT8x8_U8_S16_DC(3MLIB)
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NAME

6       mlib_VideoIDCT8x8_U8_S16_DC - inverse Discrete Cosine Transform
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SYNOPSIS

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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DESCRIPTION

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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PARAMETERS

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
34                 aligned.
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37       stride    Stride, in bytes, between adjacent rows in  a  block.  stride
38                 must be a multiple of eight..
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RETURN VALUES

42       The  function  returns MLIB_SUCCESS if successful. Otherwise it returns
43       MLIB_FAILURE.
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ATTRIBUTES

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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SEE ALSO

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)
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