Method

VipsRegionimage

Declaration [src]

int
vips_region_image (
  VipsRegion* reg,
  const VipsRect* r
)

Description [src]

The region is transformed so that at least r pixels are available to be read from the image. The image needs to be a memory buffer or represent a file on disc that has been mapped or can be mapped.

Parameters

`r`	`VipsRect`
	`VipsRect` of pixels you need to be able to address.
	The data is owned by the caller of the function.

Return value

Returns:	`int`
	0 on success, or -1 for error.