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Showing content from http://libvips.github.io/libvips/API/current/method.Image.sink_tile.html below:

Vips.Image.sink_tile

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
)

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.

tile_width

Type: int

Tile width.

tile_height

Type: int

Tile height.

start_fn

Type: VipsStartFn

Start sequences with this function.

generate_fn

Type: VipsGenerateFn

Generate pixels with this function.

stop_fn

Type: VipsStopFn

Stop sequences with this function.

a

Type: void*

User data.

The argument can be NULL. The data is owned by the caller of the method.

b

Type: void*

User data.

The argument can be NULL. The data is owned by the caller of the method.

Type: int

0 on success, or -1 on error.

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