cc [ flag... ] file... –lmlib [ library... ]
#include <mlib.h>
mlib_status mlib_ImageZoom(mlib_image *dst, const mlib_image *src,
mlib_d64 zoomx, mlib_d64 zoomy, mlib_filter filter, mlib_edge edge);
The mlib_ImageZoom() function will enlarge or minify the source image by the X and Y zoom factors. It uses the interpolation method as described by the resampling filter.
The data type of the images can be MLIB_BIT, MLIB_BYTE, MLIB_SHORT, MLIB_USHORT, or MLIB_INT.
The center of the upper-left corner pixel of an image is located at (0.5, 0.5).
The width and height of the destination image can be different from those of the source image.
The center of the source image is mapped onto the center of the destination image.
The function takes the following arguments:
Pointer to destination image.
Pointer to source image.
X zoom factor. zoomx > 0.0.
Y zoom factor. zoomy > 0.0.
Type of resampling filter. It can be one of the following:
MLIB_NEAREST MLIB_BILINEAR MLIB_BICUBIC MLIB_BICUBIC2
Type of edge condition. It can be one of the following:
MLIB_EDGE_DST_NO_WRITE MLIB_EDGE_DST_FILL_ZERO MLIB_EDGE_OP_NEAREST MLIB_EDGE_SRC_EXTEND MLIB_EDGE_SRC_EXTEND_INDEF MLIB_EDGE_SRC_PADDED
The function returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.
See attributes(5) for descriptions of the following attributes:
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mlib_ImageZoom_Fp(3MLIB), mlib_ImageZoomIn2X(3MLIB), mlib_ImageZoomIn2X_Fp(3MLIB), mlib_ImageZoomIn2XIndex(3MLIB), mlib_ImageZoomIndex(3MLIB), mlib_ImageZoomOut2X(3MLIB), mlib_ImageZoomOut2X_Fp(3MLIB), mlib_ImageZoomOut2XIndex(3MLIB), attributes(5)