1 files changed, 56 insertions, 0 deletions
diff --git a/sdl2/bindings/image.scm b/sdl2/bindings/image.scm
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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" '(*))