1 /* $NetBSD: ppmtochrpicon.c,v 1.6 2008/04/28 20:23:33 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Lonhyn T. Jasinskyj. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Usage: 34 * 35 * ppmtochrpicon [ppmfile] 36 * 37 * This programs reads from either a single file given as an argument 38 * or from stdin if no args are given. It tries to find a <ICON...> 39 * tag in the file and read a CHRP style ASCII boot icon. It is not 40 * overly intelligent at dealing with other confusing stuff in the 41 * file or weird formatting due to the specialized nature of the input 42 * files. 43 * 44 * It then produces a PPM file on stdout containing the boot icon's image. 45 */ 46 47 #include <sys/cdefs.h> 48 __RCSID("$NetBSD: ppmtochrpicon.c,v 1.6 2008/04/28 20:23:33 martin Exp $"); 49 50 #include <stdlib.h> 51 52 #include <pbm.h> 53 #include <ppm.h> 54 55 #include "chrpicon.h" 56 57 static char *hex_digits = "0123456789ABCDEF"; 58 59 int 60 main(int argc, char *argv[]) 61 { 62 FILE *ifp; 63 CHRPI_spec_rec img_rec; 64 CHRPI_spec img = &img_rec; 65 pixval maxval; 66 pixel **pixels; 67 68 ppm_init(&argc, argv); 69 70 if (argc > 2) 71 pm_usage("[ppmfile]"); 72 73 /* either use stdin or open a file */ 74 if (argc > 1) 75 ifp = pm_openr(argv[1]); 76 else 77 ifp = stdin; 78 79 /* use the img struct to conveniently store some parameters */ 80 pixels = ppm_readppm(ifp, &img->width, &img->height, &maxval); 81 82 if (maxval != 255) 83 pm_error("can only use 8-bit per channel true-color " 84 "PPM files (maxval = 255)"); 85 86 if (img->width != 64 || img->height != 64) 87 pm_message("CHRP only supports boot icons of " 88 "size 64x64, will truncate to fit"); 89 90 img->width = img->height = 64; 91 92 /* the only supported color space is RGB = 3:3:2 */ 93 img->rbits = img->gbits = 3; 94 img->bbits = 2; 95 96 pm_close(ifp); 97 98 CHRPI_writeicon(stdout, pixels, img); 99 100 return 0; 101 } 102 103 void 104 CHRPI_writeicon(FILE *fp, pixel **pixels, CHRPI_spec img) 105 { 106 CHRPI_putheader(stdout, img); 107 CHRPI_putbitmap(stdout, pixels, img); 108 CHRPI_putfooter(stdout, img); 109 } 110 111 void 112 CHRPI_putheader(FILE *fp, CHRPI_spec img) 113 { 114 fprintf(fp, "<icon size=%d,%d color-space=%d,%d,%d>\n<bitmap>\n", 115 img->height, img->width, 116 img->rbits, img->gbits, img->bbits); 117 } 118 119 void 120 CHRPI_putfooter(FILE *fp, CHRPI_spec img) 121 { 122 fprintf(fp, "</bitmap>\n</icon>\n"); 123 } 124 125 126 void 127 CHRPI_putbitmap(FILE *fp, pixel** pixels, CHRPI_spec img) 128 { 129 int row, col; 130 pixel *pP; 131 132 for (row = 0; row < img->height; row++) { 133 134 pixval r, g, b; 135 char pixbyte; 136 137 pP = pixels[row]; 138 139 for (col = 0; col < img->width; col++) { 140 141 r = PPM_GETR(*pP); 142 g = PPM_GETG(*pP); 143 b = PPM_GETB(*pP); 144 145 pixbyte = (r & 0xe0) | ((g >> 3) & 0x1c) | ((b >> 6) & 0x03); 146 147 /* write the byte in hex */ 148 fputc(hex_digits[(pixbyte>>4) & 0x0f], fp); 149 fputc(hex_digits[(pixbyte & 0x0f)], fp); 150 fputc(' ', fp); 151 pP++; 152 if ((col+1)%16 == 0) 153 fputc('\n', fp); 154 } 155 156 } 157 } 158