mlib_VideoP64Decimate_U8_U8

- averages the source raster image over 2x2 blocks and writes the results to the destination raster image

Synopsis

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

mlib_status mlib_VideoP64Decimate_U8_U8(mlib_u8 *dst,
     const mlib_u8 *src, mlib_s32 width, mlib_s32 height,
     mlib_s32 dst_stride, mlib_s32 src_stride);

Description

The mlib_VideoP64Decimate_U8_U8() function averages the source raster image over 2x2 blocks and writes the results to the destination raster image. This function is used when the remote side is only capable of QCIF and our scanned image is source to the encoder in CIF format.

Parameters

The function takes the following arguments:

dst

Pointer to the destination raster image.

src

Pointer to the source raster image.

width

Width of the image.

height

Height of the image.

dst_stride

Stride, in bytes, between adjacent rows in the destination image.

src_stride

Stride, in bytes, between adjacent rows in the source image.

Return Values

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

Attributes

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

See Also

mlib_VideoAddBlock_U8_S16(3MLIB), mlib_VideoCopyRef_S16_U8(3MLIB), mlib_VideoCopyRef_S16_U8_16x16(3MLIB), mlib_VideoCopyRef_U8_U8_16x16(3MLIB), mlib_VideoCopyRefAve_U8_U8_16x16(3MLIB), mlib_VideoH263OverlappedMC_S16_U8(3MLIB), mlib_VideoH263OverlappedMC_U8_U8(3MLIB), mlib_VideoInterpAveX_U8_U8(3MLIB), mlib_VideoInterpAveX_U8_U8_16x16(3MLIB), mlib_VideoInterpAveXY_U8_U8(3MLIB), mlib_VideoInterpAveXY_U8_U8_16x16(3MLIB), mlib_VideoInterpAveY_U8_U8(3MLIB), mlib_VideoInterpAveY_U8_U8_16x16(3MLIB), mlib_VideoInterpX_S16_U8(3MLIB), mlib_VideoInterpX_S16_U8_16x16(3MLIB), mlib_VideoInterpX_U8_U8(3MLIB), mlib_VideoInterpXY_S16_U8(3MLIB), mlib_VideoInterpXY_S16_U8_16x16(3MLIB), mlib_VideoInterpXY_U8_U8(3MLIB), mlib_VideoInterpXY_U8_U8_16x16(3MLIB), mlib_VideoInterpY_S16_U8(3MLIB), mlib_VideoInterpY_S16_U8_16x16(3MLIB), mlib_VideoInterpY_U8_U8(3MLIB), mlib_VideoInterpY_U8_U8_16x16(3MLIB), mlib_VideoP64Decimate_U8_U8(3MLIB), mlib_VideoP64Loop_S16_U8(3MLIB), mlib_VideoP64Loop_U8_U8(3MLIB), mlib_VideoP64Loop_S16_U8(3MLIB), mlib_VideoP64Loop_U8_U8(3MLIB), attributes(5)