From 9d052c650ba59ddc8132bce881bd487df31c5348 Mon Sep 17 00:00:00 2001 From: Masaya Tojo Date: Sat, 10 Aug 2024 23:08:10 +0900 Subject: Add `image-format` prefix to library name --- pnm/pgm.scm | 91 ------------------------------------------------------------- 1 file changed, 91 deletions(-) delete mode 100644 pnm/pgm.scm (limited to 'pnm/pgm.scm') diff --git a/pnm/pgm.scm b/pnm/pgm.scm deleted file mode 100644 index 5a4f027..0000000 --- a/pnm/pgm.scm +++ /dev/null @@ -1,91 +0,0 @@ -;;; R7RS-PNM --- Library for reading and writing PNM (Portable Any Map) files for R7RS -;;; Copyright © 2024 Masaya Tojo -;;; -;;; This file is part of R7RS-PNM. -;;; -;;; R7RS-PNM 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. -;;; -;;; R7RS-PNM 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 R7RS-PNM. If not, see . - -(define-library (pnm pgm) - (export make-pgm-image - %make-pgm-image) - (import (scheme base) - (scheme case-lambda) - (pnm image) - (pnm private checker) - (pnm private double-byte)) - (begin - (define make-pgm-image - (case-lambda - ((width height) - (make-pgm-image width height 255 #f)) - ((width height maxval) - (make-pgm-image width height maxval #f)) - ((width height maxval unsafe?) - (when (or (< maxval 0) - (< 65536 maxval)) - (error "(pnm pgm) make-pgm: maxval is out of range")) - (let* ((byte-count (* width height - (if (< maxval 256) - 1 - 2))) - (data (make-bytevector byte-count 0))) - (%make-pgm-image width height maxval data unsafe?))))) - - (define (%make-pgm-image width height maxval data unsafe?) - (define (make-safe-pixel-getter pixel-getter) - (let ((check-xy (make-xy-checker width height))) - (lambda (x y) - (check-xy x y) - (pixel-getter x y)))) - (define (make-safe-pixel-setter pixel-setter) - (let ((check-xy (make-xy-checker width height)) - (check-value (make-value-checker maxval 'v))) - (lambda (x y v) - (check-xy x y) - (check-value v) - (pixel-setter x y v)))) - (when (or (< maxval 0) - (< 65536 maxval)) - (error "(pnm pgm) make-pgm: maxval is out of range")) - (if (< maxval 256) - (let ((byte-count (* width height))) - (define (xy->idx x y) - (+ x (* y width))) - (define (pixel-getter x y) - (let ((idx (xy->idx x y))) - (bytevector-u8-ref data idx))) - (define (pixel-setter x y v) - (let ((idx (xy->idx x y))) - (bytevector-u8-set! data idx v))) - (unless (= byte-count (bytevector-length data)) - (error (string-append "(pnm pbm) make-pbm-image: Invalid bytevector length" byte-count))) - (make-pnm-image 'pgm width height maxval data - (if unsafe? pixel-getter (make-safe-pixel-getter pixel-getter)) - (if unsafe? pixel-setter (make-safe-pixel-setter pixel-setter)))) - (let ((byte-count (* width height 2))) - (define (xy->idx x y) (+ x (* y width))) - (define (pixel-getter x y) - (let ((idx (xy->idx x y))) - (combine-bytes (bytevector-u8-ref data idx) - (bytevector-u8-ref data (+ idx 1))))) - (define (pixel-setter x y v) - (let ((idx (xy->idx x y))) - (let-values (((v1 v2) (split-double-byte v))) - (bytevector-u8-set! data idx v1) - (bytevector-u8-set! data (+ idx 1) v2)))) - (unless (= byte-count (bytevector-length data)) - (error (string-append "(pnm pbm) make-pbm-image: Invalid bytevector length" byte-count))) - (make-pnm-image 'pgm width height maxval data - (if unsafe? pixel-getter (make-safe-pixel-getter pixel-getter)) - (if unsafe? pixel-setter (make-safe-pixel-setter pixel-setter)))))))) -- cgit v1.2.3