;;;;
;;;; source file of the GNU LilyPond music typesetter
;;;;
-;;;; (c) 2005 Jan Nieuwenhuizen <janneke@gnu.org>
+;;;; (c) 2005--2008 Jan Nieuwenhuizen <janneke@gnu.org>
(define-module (scm ps-to-png))
(srfi srfi-1)
(srfi srfi-13)
(srfi srfi-14)
+ (lily)
)
;; gettext wrapper for guile < 1.7.2
(define (gulp-port port max-length)
(let ((str (make-string max-length)))
(read-string!/partial str port 0 max-length)
- str))
-
-(define (gulp-file nm len)
- (gulp-port (open-file nm "r") len))
-
-;;; ARGH - cuases memory usage to explode with GUILE cvs.
-
-(define BOUNDING-BOX-RE
- "^%%BoundingBox: (-?[0-9]+) (-?[0-9]+) (-?[0-9]+) (-?[0-9]+)")
-
-(define (get-bbox file-name)
- (let* ((bbox (string-append file-name ".bbox"))
- ;; -sOutputFile does not work with bbox?
- (cmd (format #t "gs\
- -sDEVICE=bbox\
- -q\
- -dNOPAUSE\
- ~S\
- -c showpage\
- -c quit 2>~S"
- file-name bbox))
- (status (system cmd))
- (s (gulp-file d bbox 10240))
- (m (string-match BOUNDING_BOX_RE s)))
-
- (if m
- (list->vector
- (map (lambda (x) (string->number (car x))) (vector->list m)))
- #f)))
+ str))
+(define-public (gulp-file file-name . max-size)
+ (ly:gulp-file file-name (if (pair? max-size) (car max-size))))
;; copy of ly:system. ly:* not available via lilypond-ps2png.scm
(define (my-system be-verbose exit-on-error cmd)
(begin
(format (current-error-port) (_ "Invoking `~a'...") cmd)
(newline (current-error-port))))
-
-
(set! status (system cmd))
-
(if (not (= status 0))
(begin
(format (current-error-port)
(format #f (_ "~a exited with status: ~S") "GS" status))
- (if exit-on-error
- (exit 1))))
-
+ (if exit-on-error (exit 1))))
status)
(define (scale-down-image be-verbose factor file)
- (let* ((status 0)
- (percentage (* 100 (/ 1.0 factor)))
- (old (string-append file ".old")))
-
- (rename-file file old)
- (my-system be-verbose
- #t
- (format #f "convert -scale \"~a%\" ~a ~a" percentage old file))
- (delete-file old)
- ))
-
+ (define (with-pbm)
+ (let* ((status 0)
+ (old (string-append file ".old")))
+
+ (rename-file file old)
+ (my-system
+ be-verbose #t
+ (format #f
+ "pngtopnm ~a | pnmscale -reduce ~a 2>/dev/null | pnmtopng -compression 9 2>/dev/null > ~a"
+ old factor file))
+ (delete-file old)))
+
+ (with-pbm))
(define-public (ps-page-count ps-name)
- (let*
- ((header (gulp-file ps-name 10240))
- (match (string-match "%%Pages: ([0-9]+)" header))
- (count (if match
- (string->number (match:substring match 1))
- 0)))
- count))
+ (let* ((byte-count 10240)
+ (header (gulp-file ps-name byte-count))
+ (first-null (string-index header #\nul))
+ (match (string-match "%%Pages: ([0-9]+)"
+ (if (number? first-null)
+ (substring header 0 first-null)
+ header))))
+ (if match (string->number (match:substring match 1)) 0)))
(define-public (make-ps-images ps-name . rest)
- (let-optional
- rest ((resolution 90)
- (paper-size "a4")
- (rename-page-1? #f)
- (verbose? #f)
- (aa-factor 1)
- )
-
- (let* ((base (basename (re-sub "[.]e?ps" "" ps-name)))
- (header (gulp-file ps-name 10240))
- (png1 (string-append base ".png"))
- (pngn (string-append base "-page%d.png"))
+ (let-keywords*
+ rest #f
+ ((resolution 90)
+ (page-width 100)
+ (page-height 100)
+ (rename-page-1 #f)
+ (be-verbose (ly:get-option 'verbose))
+ (pixmap-format 'png16m)
+ (anti-alias-factor 1))
+
+ (let* ((format-str (format "~a" pixmap-format))
+ (extension (cond
+ ((string-contains format-str "png") "png")
+ ((string-contains format-str "jpg") "jpeg")
+ ((string-contains format-str "jpeg") "jpeg")
+ (else
+ (ly:error "Unknown pixmap format ~a" pixmap-format))))
+ (base (dir-basename ps-name ".ps" ".eps"))
+ (png1 (format "~a.~a" base extension))
+ (pngn (format "~a-page%d.~a" base extension))
(page-count (ps-page-count ps-name))
-
(multi-page? (> page-count 1))
(output-file (if multi-page? pngn png1))
- ;;png16m is because Lily produces color nowadays.
(gs-variable-options
- (if multi-page?
- (format #f "-sPAPERSIZE=~a" paper-size)
- "-dEPSCrop"))
+ (if multi-page?
+ (format #f "-dDEVICEWIDTHPOINTS=~,2f -dDEVICEHEIGHTPOINTS=~,2f"
+ page-width page-height)
+ "-dEPSCrop"))
(cmd (format #f "~a\
~a\
~a\
-dGraphicsAlphaBits=4\
-dTextAlphaBits=4\
-dNOPAUSE\
- -sDEVICE=png16m\
+ -sDEVICE=~a\
-sOutputFile=~S\
-r~S\
~S\
-c quit"
- (search-gs)
- (if verbose? "" "-q")
- gs-variable-options
- output-file
- (* aa-factor resolution) ps-name))
+ (search-gs)
+ (if be-verbose "" "-q")
+ gs-variable-options
+ pixmap-format
+ output-file
+ (* anti-alias-factor resolution) ps-name))
(status 0)
(files '()))
(set! cmd (re-sub "=" "#" cmd))
(set! cmd (re-sub "-dSAFER " "" cmd))))
- (set! status (my-system verbose? #f cmd))
+ (set! status (my-system be-verbose #f cmd))
(set! files
(if multi-page?
(map delete-file files)
(exit 1)))
- (if (and rename-page-1? multi-page?)
+ (if (and rename-page-1 multi-page?)
(begin
(rename-file (re-sub "%d" "1" pngn) png1)
(set! files
(cdr files)))
))
- (if (not (= 1 aa-factor))
- (for-each (lambda (f) (scale-down-image verbose? aa-factor f))
- files))
-
+ (if (not (= 1 anti-alias-factor))
+ (for-each
+ (lambda (f) (scale-down-image be-verbose anti-alias-factor f)) files))
files)))
projects / lilypond.git / blobdiff