GEGL.FFI.Buffer

FFI moule for managing and manipulating buffers

Documentation

data GeglBuffer

Outward representation of the buffer.

Constructors

GeglBuffer GeglBufferDummy

type GeglBufferDummy = ForeignPtr ()

Pointer holding a buffer. Never peek or poke it.

c_gegl_buffer_new

Arguments

:: Ptr GeglRectangle

Buffer geometry

-> BablFormatDummy

Color format

-> IO (Ptr ())

New buffer

Interface to the gegl_buffer_new function in C.

c_gegl_buffer_new_for_backend

Arguments

:: Ptr GeglRectangle

Buffer geometry

-> Ptr a

The backend

-> IO (Ptr ())

New buffer

Interface to the gegl_buffer_new_for_backend function in C.

c_gegl_buffer_open :: CString -> IO (Ptr ())

Interace to the gegl_buffer_open function in C.

c_gegl_buffer_save :: Ptr () -> CString -> Ptr GeglRectangle -> IO ()

Interface to the gegl_buffer_save function in C.

c_gegl_buffer_load :: CString -> IO (Ptr ())

Interface to the gegl_buffer_load function in C.

c_gegl_buffer_flush :: Ptr () -> IO ()

Interface to the gegl_buffer_flush function in C.

c_gegl_buffer_create_sub_buffer :: Ptr () -> Ptr GeglRectangle -> IO (Ptr ())

Interface to the gegl_buffer_create_sub_buffer function in C.

c_gegl_buffer_get_extent :: Ptr () -> IO (Ptr GeglRectangle)

Interface to the gegl_buffer_get_extent function in C.

c_gegl_buffer_set_extent

Arguments

:: Ptr ()

A buffer

-> Ptr GeglRectangle

Geometry

-> IO Bool

Returns True on success

Interface to the gegl_buffer_set_extent function in C.

c_gegl_buffer_set_color

Arguments

:: Ptr ()

The buffer

-> Ptr GeglRectangle

Rectangular region to fill

-> GeglColorDummy

The colour to fill with.

-> IO ()

Interface to the gegl_buffer_set_color funciton in C.

c_gegl_buffer_set_pattern

Arguments

:: Ptr ()

The target buffer

-> Ptr GeglRectangle

rectangular region to fill

-> Ptr ()

A buffer to be repeated as pattern

-> CDouble

X offset

-> CDouble

Y offset

-> IO ()

Interface to the gegl_bufer_set_pattern function in C.

c_gegl_buffer_clear

Arguments

:: Ptr ()

The target buffer

-> Ptr GeglRectangle

Region to clear

-> IO ()

Interface to the gegl_buffer_clear function in C.

c_gegl_buffer_get

Arguments

:: Ptr ()

Buffer to retrieve data from

-> Ptr GeglRectangle

Coordinates to retrieve from

-> CDouble

Sampling scale

-> BablFormatDummy

BablFormat to store the data in

-> Ptr a

Memory destination

-> CInt

Rowstride in bytes or 0 to compute it from format

-> CInt

Repeat mode

-> IO ()

Interface to the gegl_bufer_get function in C.