Method

VipsImagesink_tile

Declaration [src]

int
vips_sink_tile (
  VipsImage* im,
  int tile_width,
  int tile_height,
  VipsStartFn start_fn,
  VipsGenerateFn generate_fn,
  VipsStopFn stop_fn,
  void* a,
  void* b
)

Description [src]

Loops over an image. generate_fn is called for every pixel in the image, with the reg argument being a region of calculated pixels.

Each set of pixels is tile_width by tile_height pixels (less at the image edges). This is handy for things like writing a tiled TIFF image, where tiles have to be generated with a certain size.

::: seealso vips_sink(), vips_get_tile_size().

Parameters

`tile_width`	`int`
	Tile width.
`tile_height`	`int`
	Tile height.
`start_fn`	`VipsStartFn`
	Start sequences with this function.
`generate_fn`	`VipsGenerateFn`
	Generate pixels with this function.
`stop_fn`	`VipsStopFn`
	Stop sequences with this function.
`a`	`void*`
	User data.
	The argument can be `NULL`.
	The data is owned by the caller of the function.
`b`	`void*`
	User data.
	The argument can be `NULL`.
	The data is owned by the caller of the function.

Return value

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