Function

VipsGenerateFn

Declaration 

int
(* VipsGenerateFn) (
  VipsRegion* out,
  void* seq,
  void* a,
  void* b,
  gboolean* stop
)

Description [src]

Fill out->valid with pixels. seq contains per-thread state, such as the input regions. Set stop to TRUE to stop processing.

See also

vips_image_generate(), vips_stop_many().

Parameters

out

Type: VipsRegion

VipsRegion to fill.

The data is owned by the caller of the function.
seq

Type: void*

Sequence value.

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

Type: void*

User data.

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

Type: void*

User data.

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

Type: gboolean*

Set this to stop processing.

The data is owned by the caller of the function.

Return value

Type: int

0 on success, -1 on error.