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;;; guile-sdl2 --- FFI bindings for SDL2
;;; Copyright © 2015 David Thompson <davet@gnu.org>
;;;
;;; This file is part of guile-sdl2.
;;;
;;; Guile-sdl2 is free software; you can redistribute it and/or modify
;;; it under the terms of the GNU Lesser General Public License as
;;; published by the Free Software Foundation; either version 3 of the
;;; License, or (at your option) any later version.
;;;
;;; Guile-sdl2 is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;;; General Public License for more details.
;;;
;;; You should have received a copy of the GNU Lesser General Public
;;; License along with guile-sdl2. If not, see
;;; <http://www.gnu.org/licenses/>.
;;; Commentary:
;;
;; Low-level FFI bindings for SDL2_image.
;;
;;; Code:
(define-module (sdl2 bindings image)
#:use-module (system foreign)
#:use-module (sdl2 config))
(define sdl-image-func
(let ((lib (dynamic-link %libsdl2-image)))
(lambda (return-type function-name arg-types)
"Return a procedure for the foreign function FUNCTION-NAME in
the SDL2_image shared library. That function must return a value of
RETURN-TYPE and accept arguments of ARG-TYPES."
(pointer->procedure return-type
(dynamic-func function-name lib)
arg-types))))
(define-syntax-rule (define-foreign name return-type func-name arg-types)
(define-public name
(sdl-image-func return-type func-name arg-types)))
(define-public IMG_INIT_JPG #x00000001)
(define-public IMG_INIT_PNG #x00000002)
(define-public IMG_INIT_TIF #x00000004)
(define-public IMG_INIT_WEBP #x00000008)
(define-foreign img-init
int "IMG_Init" (list int))
(define-foreign img-quit
void "IMG_Quit" '())
(define-foreign img-load
'* "IMG_Load" '(*))
(define-foreign img-save-png
int "IMG_SavePNG" '(* *))
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