Add freeimage wrapper.

1 files changed, 250 insertions, 0 deletions

diff --git a/2d/wrappers/freeimage.scm b/2d/wrappers/freeimage.scm
new file mode 100644
index 0000000..17334f4
--- /dev/null
+++ b/2d/wrappers/freeimage.scm
@@ -0,0 +1,250 @@
+;;; guile-2d
+;;; Copyright (C) 2013 David Thompson <dthompson2@worcester.edu>
+;;;
+;;; Guile-2d 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-2d 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
+;;; Lesser General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU Lesser General Public
+;;; License along with this program.  If not, see
+;;; <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+;;
+;; Quick and dirty wrapper for some freeimage functions.
+;;
+;;; Code:
+
+(define-module (2d wrappers freeimage)
+  #:use-module (system foreign))
+
+(define libfreeimage (dynamic-link "libfreeimage"))
+
+(define-syntax-rule (define-foreign name ret string-name args)
+  (define name
+    (pointer->procedure ret (dynamic-func string-name libfreeimage) args)))
+
+;; Borrowed from guile-figl
+(define-syntax-rule (define-enumeration enumerator (name value) ...)
+  (define-syntax enumerator
+    (lambda (x)
+      (syntax-case x ()
+        ((_)
+         #''(name ...))
+        ((_ enum) (number? (syntax->datum #'enum))
+         #'enum)
+        ((_ enum)
+         (or (assq-ref '((name . value) ...)
+                       (syntax->datum #'enum))
+             (syntax-violation 'enumerator "invalid enumerated value"
+                               #'enum)))))))
+
+(define (number->boolean n)
+  (not (zero? n)))
+
+;;;
+;;; FreeImage file formats
+;;;
+
+(define-enumeration freeimage-format
+  (unknown -1)
+  (bmp      0)
+  (ico      1)
+  (jpeg     2)
+  (jng      3)
+  (koala    4)
+  (lbm      5)
+  (iff      5)
+  (mng      6)
+  (pbm      7)
+  (pbmraw   8)
+  (pcd      9)
+  (pcx      10)
+  (pgm      11)
+  (pgmraw   12)
+  (png      13)
+  (ppm      14)
+  (ppmraw   15)
+  (ras      16)
+  (targa    17)
+  (tiff     18)
+  (wbmp     19)
+  (psd      20)
+  (cut      21)
+  (xbm      22)
+  (xpm      23)
+  (dds      24)
+  (gif      25)
+  (hdr      26)
+  (faxg3    27)
+  (sgi      28)
+  (exr      29)
+  (j2k      30)
+  (jp2      31)
+  (pfm      32)
+  (pict     33)
+  (raw      34))
+
+(export freeimage-format)
+
+;;;
+;;; General functions
+;;;
+
+(define-foreign %freeimage-get-version '* "FreeImage_GetVersion" '())
+(define-foreign %freeimage-set-output-message
+  void "FreeImage_SetOutputMessage" '(*))
+
+(define (freeimage-get-version)
+  (pointer->string (%freeimage-get-version)))
+
+(define (freeimage-set-output-message callback)
+  (%freeimage-set-output-message
+   (procedure->pointer void
+                       (lambda (image-format message)
+                         (callback image-format (pointer->string message)))
+                       (list unsigned-int '*))))
+
+;; Set a default output message callback to writes to stdout.
+(freeimage-set-output-message
+ (lambda (image-format message)
+   (display "freeimage error: ")
+   (display message)
+   (newline)))
+
+(export freeimage-get-version
+        freeimage-set-output-message)
+
+
+;;;
+;;; Bitmap management functions
+;;;
+
+(define-wrapped-pointer-type <freeimage-bitmap>
+  freeimage-bitmap?
+  wrap-freeimage-bitmap unwrap-freeimage-bitmap
+  (lambda (r port)
+    (let ((bitmap (unwrap-freeimage-bitmap r)))
+      (format port
+              "<freeimage-bitmap ~x width: ~d height: ~d bpp: ~d>"
+              (pointer-address bitmap)
+              (%freeimage-get-width bitmap)
+              (%freeimage-get-height bitmap)
+              (%freeimage-get-bpp bitmap)))))
+
+(define-foreign %freeimage-load '* "FreeImage_Load" (list unsigned-int '*))
+
+(define (freeimage-load image-format filename)
+  (wrap-freeimage-bitmap
+   (%freeimage-load image-format (string->pointer filename))))
+
+(define-foreign %freeimage-unload void "FreeImage_Unload" '(*))
+
+(define (freeimage-unload bitmap)
+  (%freeimage-unload (unwrap-freeimage-bitmap bitmap)))
+
+(export freeimage-load
+        freeimage-unload)
+
+;;;
+;;; Bitmap information functions
+;;;
+
+(define-foreign %freeimage-get-image-type unsigned-int "FreeImage_GetImageType" '(*))
+(define-foreign %freeimage-get-bpp unsigned-int "FreeImage_GetBPP" '(*))
+(define-foreign %freeimage-get-width unsigned-int "FreeImage_GetWidth" '(*))
+(define-foreign %freeimage-get-height unsigned-int "FreeImage_GetHeight" '(*))
+(define-foreign %freeimage-get-pitch unsigned-int "FreeImage_GetPitch" '(*))
+(define-foreign %freeimage-get-red-mask unsigned-int "FreeImage_GetRedMask" '(*))
+(define-foreign %freeimage-get-green-mask unsigned-int "FreeImage_GetGreenMask" '(*))
+(define-foreign %freeimage-get-blue-mask unsigned-int "FreeImage_GetBlueMask" '(*))
+(define-foreign %freeimage-has-pixels unsigned-int "FreeImage_HasPixels" '(*))
+
+(define (freeimage-get-image-type bitmap)
+  (%freeimage-get-image-type (unwrap-freeimage-bitmap bitmap)))
+
+(define (freeimage-get-bpp bitmap)
+  (%freeimage-get-bpp (unwrap-freeimage-bitmap bitmap)))
+
+(define (freeimage-get-width bitmap)
+  (%freeimage-get-width (unwrap-freeimage-bitmap bitmap)))
+
+(define (freeimage-get-height bitmap)
+  (%freeimage-get-height (unwrap-freeimage-bitmap bitmap)))
+
+(define (freeimage-get-pitch bitmap)
+  (%freeimage-get-pitch (unwrap-freeimage-bitmap bitmap)))
+
+(define (freeimage-get-red-mask bitmap)
+  (%freeimage-get-red-mask (unwrap-freeimage-bitmap bitmap)))
+
+(define (freeimage-get-green-mask bitmap)
+  (%freeimage-get-green-mask (unwrap-freeimage-bitmap bitmap)))
+
+(define (freeimage-get-blue-mask bitmap)
+  (%freeimage-get-blue-mask (unwrap-freeimage-bitmap bitmap)))
+
+(define (freeimage-has-pixels? bitmap)
+  (number->boolean
+   (%freeimage-has-pixels (unwrap-freeimage-bitmap bitmap))))
+
+(export freeimage-get-image-type
+        freeimage-get-bpp
+        freeimage-get-width
+        freeimage-get-height
+        freeimage-get-red-mask
+        freeimage-get-green-mask
+        freeimage-get-blue-mask
+        freeimage-has-pixels?)
+
+;;;
+;;; Filetype functions
+;;;
+
+(define-foreign %freeimage-get-file-type unsigned-int "FreeImage_GetFileType" '(*))
+
+(define (freeimage-get-file-type filename)
+  (%freeimage-get-file-type (string->pointer filename)))
+
+(export freeimage-get-file-type)
+
+;;;
+;;; Pixel access functions
+;;;
+
+(define-foreign %freeimage-get-bits '* "FreeImage_GetBits" '(*))
+
+(define (freeimage-get-bits bitmap)
+  (pointer->bytevector
+     (%freeimage-get-bits (unwrap-freeimage-bitmap bitmap))
+     (* (freeimage-get-height bitmap)
+        (freeimage-get-pitch bitmap))))
+
+(export freeimage-get-bits)
+
+;;;
+;;; Conversion functions
+;;;
+
+(define-foreign %freeimage-convert-to-24-bits '* "FreeImage_ConvertTo24Bits" '(*))
+(define-foreign %freeimage-convert-to-32-bits '* "FreeImage_ConvertTo32Bits" '(*))
+(define-foreign %freeimage-convert-to-raw-bits
+  void "FreeImage_ConvertToRawBits"
+  (list '* '* int unsigned-int unsigned-int unsigned-int unsigned-int uint8))
+
+(define (freeimage-convert-to-24-bits bitmap)
+  (wrap-freeimage-bitmap
+   (%freeimage-convert-to-24-bits (unwrap-freeimage-bitmap bitmap))))
+
+(define (freeimage-convert-to-32-bits bitmap)
+  (wrap-freeimage-bitmap
+   (%freeimage-convert-to-32-bits (unwrap-freeimage-bitmap bitmap))))
+
+(export freeimage-convert-to-24-bits
+        freeimage-convert-to-32-bits)