Vips.Region.fetch (original) (raw)

Method

VipsRegionfetch

Declaration [src]

VipsPel*
vips_region_fetch (
  VipsRegion* region,
  int left,
  int top,
  int width,
  int height,
  size_t* len
)

Description [src]

Generate an area of pixels and return a copy. The result must be freed with g_free(). The requested area must be completely inside the image.

This is equivalent to vips_region_prepare(), followed by a memcpy. It is convenient for language bindings.

Parameters

left

Type: int

Area of pixels to fetch.

top

Type: int

Area of pixels to fetch.

width

Type: int

Area of pixels to fetch.

height

Type: int

Area of pixels to fetch.

len

Type: size_t*

No description available.

The data is owned by the caller of the method.

Return value

Type: VipsPel

A copy of the pixel data.

The returned data is owned by the instance.