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 |
int |
Area of pixels to fetch. |
|
top |
int |
Area of pixels to fetch. |
|
width |
int |
Area of pixels to fetch. |
|
height |
int |
Area of pixels to fetch. |
|
len |
size_t* |
| No description available. | |
| The data is owned by the caller of the function. |
Return value
| Returns: | VipsPel |
A copy of the pixel data. |
|
| The data is owned by the instance. |