mlib_VideoQuantize_S16(3MLIB)

Name

mlib_VideoQuantize_S16 - quantization of forward Discrete Cosine Transform (DCT) coefficients

Synopsis

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

mlib_status mlib_VideoQuantize_S16(mlib_s16 icoeffs[64],
     const mlib_d64 dqtable[64]);

Description

The mlib_VideoQuantize_S16() function performs quantization on DCT coefficients.

The following equation is used:

icoeffs[i] = icoeffs[i] * dqtable[i];  0 ≤ i < 64

Parameters

The function takes the following arguments:

icoeffs

Pointer to the output DCT coefficients:

-2048 < icoeffs[i] < 2048

Note that icoeffs must be 8-byte aligned.

dqtable

Pointer to quantizer table coefficients.

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_VideoQuantizeInit_S16(3MLIB), attributes(5)