man pages section 3: Multimedia Library Functions

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Updated: July 2014
 
 

mlib_VideoQuantizeInit_S16(3MLIB)

Name

mlib_VideoQuantizeInit_S16 - quantization of forward Discrete Cosine Transform (DCT) coefficients

Synopsis

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

mlib_status mlib_VideoQuantizeInit_S16(mlib_d64 dqtable[64],
     const mlib_s16 iqtable[64]);

Description

The mlib_VideoQuantizeInit_S16() function initializes the quantization table.

The following equation is used:

dqtable[i] = 1.0 / iqtable[i];  0 ≤ i < 64

Parameters

The function takes the following arguments:

dqtable

Pointer to quantizer table coefficients.

iqtable

Pointer to original quantizer table coefficients:

0 < iqtable[i] < 128

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 TYPE
ATTRIBUTE VALUE
Interface Stability
Committed
MT-Level
MT-Safe

See also

mlib_VideoDCT2x2_S16_S16(3MLIB), mlib_VideoDCT4x4_S16_S16(3MLIB), mlib_VideoDCT8x8_S16_S16(3MLIB), mlib_VideoDCT8x8_S16_S16_B12(3MLIB), mlib_VideoDCT8x8_S16_S16_NA(3MLIB), mlib_VideoDCT8x8_S16_U8(3MLIB), mlib_VideoDCT8x8_S16_U8_NA(3MLIB), mlib_VideoDCT16x16_S16_S16(3MLIB), mlib_VideoDCT16x16_S16_S16_B10(3MLIB), mlib_VideoDeQuantize_S16(3MLIB), mlib_VideoDeQuantizeInit_S16(3MLIB), mlib_VideoQuantize_S16(3MLIB), attributes(5)