Returns a Buffer that's either backed by the pixbuf's pixels, or a
copy of them.
This function tries to not copy the pixbuf's pixels. If the pixbuf's rowstride is a multiple of its bpp, a simple reference
to the pixbuf's pixels is made and pixbuf will be kept around for as long as the buffer exists; otherwise the
pixels are copied.
| pixbuf |
a Pixbuf |
|
a new Buffer. |