1mlib_VideoDeQuantizeIDCT8x8m_eUd8i_aSL1i6b_mNLlAii(bb3r_MaVLriIydBe)FouDnecQtuiaonntsizeIDCT8x8_U8_S16_NA(3MLIB)
2
3
4

NAME

6       mlib_VideoDeQuantizeIDCT8x8_U8_S16_NA - dequantization and inverse Dis‐
7       crete Cosine Transform (IDCT)
8

SYNOPSIS

10       cc [ flag... ] file... -lmlib [ library... ]
11       #include <mlib.h>
12
13       mlib_status mlib_VideoDeQuantizeIDCT8x8_U8_S16_NA(
14            mlib_u8 *block, const mlib_s16 coeffs[64],
15            const mlib_d64 dqtable[64], mlib_s32 stride);
16
17

DESCRIPTION

19       The mlib_VideoDeQuantizeIDCT8x8_U8_S16_NA()  function  dequantizes  the
20       quantized  DCT  coefficients  and then computes the inverse DCT. It's a
21       combination         of          mlib_VideoDeQuantize_S16()          and
22       mlib_VideoIDCT8x8_U8_S16_NA() for better performance.
23
24
25       This function requires no special address alignment.
26
27
28       This  function can be used in JPEG with 8-bit precision, or in MPEG for
29       the intra mode.
30

PARAMETERS

32       The function takes the following arguments:
33
34       block      Pointer to an 8x8 block.
35
36
37       coeffs     Pointer to the input quantized DCT coefficients.
38
39
40       dqtable    Pointer   to   the   dequantization   table   generated   by
41                  mlib_VideoDeQuantizeInit_S16().
42
43
44       stride     Stride in bytes between adjacent rows in the block.
45
46

RETURN VALUES

48       The  function  returns MLIB_SUCCESS if successful. Otherwise it returns
49       MLIB_FAILURE.
50

ATTRIBUTES

52       See attributes(5) for descriptions of the following attributes:
53
54
55
56
57       ┌─────────────────────────────┬─────────────────────────────┐
58       │      ATTRIBUTE TYPE         │      ATTRIBUTE VALUE        │
59       ├─────────────────────────────┼─────────────────────────────┤
60       │Interface Stability          │Committed                    │
61       ├─────────────────────────────┼─────────────────────────────┤
62       │MT-Level                     │MT-Safe                      │
63       └─────────────────────────────┴─────────────────────────────┘
64

SEE ALSO

66       mlib_VideoDeQuantizeIDCT8x8_S16_S16_B12(3MLIB),  mlib_VideoDeQuantizeI‐
67       DCT8x8_S16_S16_B12_NA(3MLIB),                    mlib_VideoDeQuantizeI‐
68       DCT8x8_U8_S16(3MLIB),              mlib_VideoDeQuantizeInit_S16(3MLIB),
69       attributes(5)
70
71
72
73SunOS 5.11                        2mlMiabr_V2i0d0e7oDeQuantizeIDCT8x8_U8_S16_NA(3MLIB)
Impressum