are we to use the packet?

Check if a preview image with given params exists in the image

* vips_clone_stamp: * @in: input image * @out: output image * @...: %NULL-terminated list of optional named arguments * * Returns: 0 on success,

* vips_gmic: * @in: (array length=n) (transfer none): array of input images * @out: output image * @n: number of input images * @padding: overlap

* vips_layer: * @in: input image * @out: output image * @...: %NULL-terminated list of optional named arguments * * Returns: 0 on success, -1 on

* vips_layer: * @in: input image * @out: output image * @...: %NULL-terminated list of optional named arguments * * Returns: 0 on success, -1 on

* vips_sink_screen: * @in: input image * @out: output image * @mask: mask image indicating valid pixels * @tile_width: tile width * @tile_height:

Acquire/lock this mutex exclusively. Only one thread can have exclusive access at any one time. Write operations to guarded data require an exclusiv

class static */

BasicError constructor