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

Type: VipsRect

VipsRect of pixels you need to be able to address.

The data is owned by the caller of the method.

Return value

Type: int

0 on success, or -1 for error.