Vips.Image.shrinkh (original) (raw)
Method
VipsImageshrinkh
Declaration [src]
int
vips_shrinkh (
VipsImage* in,
VipsImage** out,
int hshrink,
...
)
Description [src]
Shrink in horizontally by an integer factor. Each pixel in the output is the average of the corresponding line of hshrink pixels in the input.
This is a very low-level operation: see vips_resize() for a more convenient way to resize images.
This operation does not change xres or yres. The image resolution needs to be updated by the application.
Optional arguments
ceil:gboolean, round-up output dimensions
This method is not directly available to language bindings.
Parameters
out
Type: VipsImage
Output image.
| The argument will be set by the function. |
|---|
| The caller of the method takes ownership of the returned data, and is responsible for freeing it. |
hshrink
Type: int
Horizontal shrink.
...
Type: ``
NULL-terminated list of optional named arguments.
Return value
Type: int
0 on success, -1 on error.