Content-type: text/html Man page of mlib_VideoDCT8x8_S16_S16_B12

mlib_VideoDCT8x8_S16_S16_B12

Section: mediaLib Library Functions (3MLIB)
Updated: 2 Mar 2007
Index Return to Main Contents
 

NAME

mlib_VideoDCT8x8_S16_S16_B12 - forward Discrete Cosine Transform (DCT)  

SYNOPSIS

cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>

mlib_status mlib_VideoDCT8x8_S16_S16_B12(
    mlib_s16 coeffs[64], const mlib_s16 block[64]);

 

DESCRIPTION

This function computes the forward DCT for the destination DCT coefficients of data type mlib_s16 and source block of data type mlib_s16. The source to the DCT routine can occupy up to 12 bits for each of its elements.

The source and destination buffer addresses must be 8-byte aligned.

This function can be used in JPEG with 12-bit precision.  

PARAMETERS

The function takes the following arguments:

coeffs

Pointer to the output DCT coefficients. Note that coeffs must be 8-byte aligned.

block

Pointer to an 8x8 block. Note that block must be 8-byte aligned.

 

RETURN VALUES

The function returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.  

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPEATTRIBUTE VALUE

Interface StabilityCommitted

MT-Level

 

SEE ALSO

mlib_VideoDCT2x2_S16_S16(3MLIB), mlib_VideoDCT4x4_S16_S16(3MLIB), mlib_VideoDCT8x8_S16_S16_B10(3MLIB), mlib_VideoDCT8x8_S16_S16_B10_NA(3MLIB), mlib_VideoDCT8x8_S16_U8(3MLIB), mlib_VideoDCT8x8_S16_U8_NA(3MLIB), mlib_VideoDCT16x16_S16_S16(3MLIB), mlib_VideoDCT16x16_S16_S16_B10(3MLIB), attributes(5)


 

Index

NAME
SYNOPSIS
DESCRIPTION
PARAMETERS
RETURN VALUES
ATTRIBUTES
SEE ALSO

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Time: 02:38:16 GMT, October 02, 2010