/usr/share/gnudatalanguage/lib/read_bmp.pro is in libgnudatalanguage0 0.9.7-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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;
; NAME: READ_BMP
;
; PURPOSE: Reads a bitmap file into memory
;
; CATEGORY: Images (IO)
;
; CALLING SEQUENCE: data=read_bmp(filename,red,green,blue,[RGB=RGB])
;
; KEYWORD PARAMETERS:
; RGB : Set to reverse the color ordering from BGR
;
; OUTPUTS: For true color images, data is a three dimensional array
; with pixel interleaving (i.e [3,columns,rows])
;
; OPTIONAL OUTPUTS: For pseudocolor only
; red : the Red colormap vector (for PseudoColor images)
; green: the Green colormap vector (for PseudoColor images)
; blue : the Blue colormap vector (for PseudoColor images)
;
; SIDE EFFECTS:
;
; RESTRICTIONS:
; Requires ImageMagick
;
; PROCEDURE:
; Use ImageMagick to read the data as requested
;
; EXAMPLE:
;
; MODIFICATION HISTORY:
; Written by: Christopher Lee 2004-05-17
; Flip image: Marc Schellens 2004-09-01
;
;
;-
; LICENCE:
; Copyright (C) 2004,
; This program is free software; you can redistribute it and/or modify
; it under the terms of the GNU General Public License as published by
; the Free Software Foundation; either version 2 of the License, or
; (at your option) any later version.
;
;
;-
;
function READ_BMP, filename, red, green, blue, rgb=rgb, $
help=help, test=test, verbose=verbose
;
ON_ERROR, 2
;
; this line allows to compile also in IDL ...
FORWARD_FUNCTION MAGICK_EXISTS, MAGICK_PING, MAGICK_READ
;
if KEYWORD_SET(help) then begin
print, 'function READ_BMP, filename, red, green, blue, rgb=rgb, $'
print, ' help=help, test=test, verbose=verbose'
return, -1
endif
;
; Do we have access to ImageMagick functionnalities ??
;
if (MAGICK_EXISTS() EQ 0) then begin
MESSAGE, /continue, "GDL was compiled without ImageMagick support."
MESSAGE, "You must have ImageMagick support to use this functionaly."
endif
;
if (N_ELEMENTS(filename) GT 1) then MESSAGE, "Only one file at once !"
;
mid=MAGICK_OPEN(filename)
;
if (MAGICK_INDEXEDCOLOR(mid)) then begin
;;
data=MAGICK_READINDEXES(mid)
MAGICK_READCOLORMAPRGB, mid, red, green, blue
;;
;; flip image
sz = SIZE( data, /DIM)
rev = sz[1] - 1L - LINDGEN( sz[1])
data = data[ *, rev]
;;
endif else begin
;;
data=MAGICK_READ(mid,rgb=rgb)
;;
;; flip image
sz = SIZE( data, /DIM)
rev = sz[2] - 1L - LINDGEN( sz[2])
data = data[ *, rev, *]
;;
endelse
;
MAGICK_CLOSE, mid
;
if KEYWORD_SET(test) then stop
;
return, data
;
end
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