1mlib_VideoDCT4x4_S16_S16(3MmLeIdBi)aLib Library Functmiloinbs_VideoDCT4x4_S16_S16(3MLIB)
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NAME

6       mlib_VideoDCT4x4_S16_S16 - forward Discrete Cosine Transform (DCT)
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SYNOPSIS

9       cc [ flag... ] file... -lmlib [ library... ]
10       #include <mlib.h>
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12       mlib_status mlib_VideoDCT4x4_S16_S16(mlib_s16 coeffs[16],
13            const mlib_s16 block[16]);
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DESCRIPTION

17       The  mlib_VideoDCT4x4_S16_S16()  function  computes the forward DCT for
18       the destination DCT coefficients of data type  mlib_s16  and  a  source
19       block  of  data type mlib_s16. The input to the DCT routine is the dif‐
20       ference between the current block and the reference block. The  differ‐
21       ence  pixel  can occupy nine bits and is represented as a 16-bit datum.
22       The source and destination buffer addresses must be 8-byte aligned.
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PARAMETERS

25       The function takes the following arguments:
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27       coeffs    Pointer to the destination DCT coefficients. coeffs  must  be
28                 8-byte aligned.
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31       block     Pointer  to  an 4x4 motion-compensated block that is the dif‐
32                 ference between the reference block and  the  current  block.
33                 block must be 8-byte aligned.
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RETURN VALUES

37       The  function  returns MLIB_SUCCESS if successful. Otherwise it returns
38       MLIB_FAILURE.
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ATTRIBUTES

41       See attributes(5) for descriptions of the following attributes:
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46       ┌─────────────────────────────┬─────────────────────────────┐
47       │      ATTRIBUTE TYPE         │      ATTRIBUTE VALUE        │
48       ├─────────────────────────────┼─────────────────────────────┤
49       │Interface Stability          │Committed                    │
50       ├─────────────────────────────┼─────────────────────────────┤
51       │MT-Level                     │MT-Safe                      │
52       └─────────────────────────────┴─────────────────────────────┘
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SEE ALSO

55       mlib_VideoDCT2x2_S16_S16(3MLIB),       mlib_VideoDCT4x4_S16_S16(3MLIB),
56       mlib_VideoDCT8x8_S16_S16(3MLIB),   mlib_VideoDCT8x8_S16_S16_B12(3MLIB),
57       mlib_VideoDCT8x8_S16_S16_NA(3MLIB),     mlib_VideoDCT8x8_S16_U8(3MLIB),
58       mlib_VideoDCT8x8_S16_U8_NA(3MLIB),   mlib_VideoDCT16x16_S16_S16(3MLIB),
59       mlib_VideoDCT16x16_S16_S16_B10(3MLIB), mlib_VideoDeQuantize_S16(3MLIB),
60       mlib_VideoDeQuantizeInit_S16(3MLIB),     mlib_VideoQuantize_S16(3MLIB),
61       mlib_VideoQuantizeInit_S16(3MLIB), attributes(5)
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65SunOS 5.11                        2 Mar 2007   mlib_VideoDCT4x4_S16_S16(3MLIB)
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