FlexBook / Mbed 2 deprecated FlexBook171204a

Added HangmanGame class, but does not work yet

Dependencies:   SDFileSystem app epson mbed msp430 pl tests

pnm-utils.c@0:fa7450a43b99, 2017-12-04 (annotated)

Committer:
group-FlexBook
Date:
Mon Dec 04 09:32:20 2017 +0000
Revision:
0:fa7450a43b99
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
group-FlexBook 0:fa7450a43b99 1 /*
group-FlexBook 0:fa7450a43b99 2 Plastic Logic EPD project on MSP430
group-FlexBook 0:fa7450a43b99 3
group-FlexBook 0:fa7450a43b99 4 Copyright (C) 2013, 2014 Plastic Logic Limited
group-FlexBook 0:fa7450a43b99 5
group-FlexBook 0:fa7450a43b99 6 This program is free software: you can redistribute it and/or modify
group-FlexBook 0:fa7450a43b99 7 it under the terms of the GNU General Public License as published by
group-FlexBook 0:fa7450a43b99 8 the Free Software Foundation, either version 3 of the License, or
group-FlexBook 0:fa7450a43b99 9 (at your option) any later version.
group-FlexBook 0:fa7450a43b99 10
group-FlexBook 0:fa7450a43b99 11 This program is distributed in the hope that it will be useful,
group-FlexBook 0:fa7450a43b99 12 but WITHOUT ANY WARRANTY; without even the implied warranty of
group-FlexBook 0:fa7450a43b99 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
group-FlexBook 0:fa7450a43b99 14 GNU General Public License for more details.
group-FlexBook 0:fa7450a43b99 15
group-FlexBook 0:fa7450a43b99 16 You should have received a copy of the GNU General Public License
group-FlexBook 0:fa7450a43b99 17 along with this program. If not, see <http://www.gnu.org/licenses/>.
group-FlexBook 0:fa7450a43b99 18 */
group-FlexBook 0:fa7450a43b99 19 /*
group-FlexBook 0:fa7450a43b99 20 * pnm-utils.c -- Utilities for dealing with PNM format graphics files
group-FlexBook 0:fa7450a43b99 21 *
group-FlexBook 0:fa7450a43b99 22 * Authors:
group-FlexBook 0:fa7450a43b99 23 * Nick Terry <nick.terry@plasticlogic.com>
group-FlexBook 0:fa7450a43b99 24 * Guillaume Tucker <guillaume.tucker@plasticlogic.com>
group-FlexBook 0:fa7450a43b99 25 *
group-FlexBook 0:fa7450a43b99 26 * Utilities for dealing with PNM format graphics files
group-FlexBook 0:fa7450a43b99 27 * We are only interested in PGM and PBM
group-FlexBook 0:fa7450a43b99 28 *
group-FlexBook 0:fa7450a43b99 29 * Details of the format can be found at:
group-FlexBook 0:fa7450a43b99 30 * http://en.wikipedia.org/wiki/Netpbm_format
group-FlexBook 0:fa7450a43b99 31 * However, this seems to indicate that the header format is more free format
group-FlexBook 0:fa7450a43b99 32 * http://paulbourke.net/dataformats/ppm/
group-FlexBook 0:fa7450a43b99 33 * Lines terminated with cr and/or lf or just white space
group-FlexBook 0:fa7450a43b99 34 * Header example 1
group-FlexBook 0:fa7450a43b99 35 * P6 1024 788 255
group-FlexBook 0:fa7450a43b99 36 * Header example 2
group-FlexBook 0:fa7450a43b99 37 * P6
group-FlexBook 0:fa7450a43b99 38 * 1024 788
group-FlexBook 0:fa7450a43b99 39 * # A comment
group-FlexBook 0:fa7450a43b99 40 * 255
group-FlexBook 0:fa7450a43b99 41 * Header example 3
group-FlexBook 0:fa7450a43b99 42 * P3
group-FlexBook 0:fa7450a43b99 43 * 1024 # the image width
group-FlexBook 0:fa7450a43b99 44 * 788 # the image height
group-FlexBook 0:fa7450a43b99 45 * # A comment
group-FlexBook 0:fa7450a43b99 46 * 1023
group-FlexBook 0:fa7450a43b99 47 *
group-FlexBook 0:fa7450a43b99 48 *
group-FlexBook 0:fa7450a43b99 49 * P4
group-FlexBook 0:fa7450a43b99 50 * # Comment string
group-FlexBook 0:fa7450a43b99 51 * 24 7
group-FlexBook 0:fa7450a43b99 52 *
group-FlexBook 0:fa7450a43b99 53 * P5
group-FlexBook 0:fa7450a43b99 54 * # Comment string
group-FlexBook 0:fa7450a43b99 55 * 24 7
group-FlexBook 0:fa7450a43b99 56 * 15
group-FlexBook 0:fa7450a43b99 57 *
group-FlexBook 0:fa7450a43b99 58 */
group-FlexBook 0:fa7450a43b99 59
group-FlexBook 0:fa7450a43b99 60 #include <stdlib.h>
group-FlexBook 0:fa7450a43b99 61 #include "assert.h"
group-FlexBook 0:fa7450a43b99 62 #include "ChaN/ff.h"
group-FlexBook 0:fa7450a43b99 63 #include "pnm-utils.h"
group-FlexBook 0:fa7450a43b99 64
group-FlexBook 0:fa7450a43b99 65 int pnm_read_int32(FIL *pnm_file, int32_t *value)
group-FlexBook 0:fa7450a43b99 66 {
group-FlexBook 0:fa7450a43b99 67 UINT count;
group-FlexBook 0:fa7450a43b99 68 char ch;
group-FlexBook 0:fa7450a43b99 69 int digits = 0;
group-FlexBook 0:fa7450a43b99 70 int in_comment = 0;
group-FlexBook 0:fa7450a43b99 71 int found = 0;
group-FlexBook 0:fa7450a43b99 72 int32_t val = 0;
group-FlexBook 0:fa7450a43b99 73
group-FlexBook 0:fa7450a43b99 74 assert(pnm_file != NULL);
group-FlexBook 0:fa7450a43b99 75 assert(value != NULL);
group-FlexBook 0:fa7450a43b99 76
group-FlexBook 0:fa7450a43b99 77 while (!found &&
group-FlexBook 0:fa7450a43b99 78 (f_read(pnm_file,&ch,1,&count) == FR_OK) && count == 1)
group-FlexBook 0:fa7450a43b99 79 {
group-FlexBook 0:fa7450a43b99 80 switch (ch)
group-FlexBook 0:fa7450a43b99 81 {
group-FlexBook 0:fa7450a43b99 82 case '#':
group-FlexBook 0:fa7450a43b99 83 in_comment = 1;
group-FlexBook 0:fa7450a43b99 84 break;
group-FlexBook 0:fa7450a43b99 85 case ' ':
group-FlexBook 0:fa7450a43b99 86 case '\t':
group-FlexBook 0:fa7450a43b99 87 case '\r':
group-FlexBook 0:fa7450a43b99 88 case '\n':
group-FlexBook 0:fa7450a43b99 89 if (!in_comment)
group-FlexBook 0:fa7450a43b99 90 {
group-FlexBook 0:fa7450a43b99 91 if (digits) {
group-FlexBook 0:fa7450a43b99 92 found = 1;
group-FlexBook 0:fa7450a43b99 93 }
group-FlexBook 0:fa7450a43b99 94 }
group-FlexBook 0:fa7450a43b99 95 if (ch == '\r' || ch == '\n')
group-FlexBook 0:fa7450a43b99 96 in_comment = 0;
group-FlexBook 0:fa7450a43b99 97 break;
group-FlexBook 0:fa7450a43b99 98 case '0': case '1': case '2': case '3': case '4':
group-FlexBook 0:fa7450a43b99 99 case '5': case '6': case '7': case '8': case '9':
group-FlexBook 0:fa7450a43b99 100 if (!in_comment) {
group-FlexBook 0:fa7450a43b99 101 val = val * 10 + (ch - '0');
group-FlexBook 0:fa7450a43b99 102 digits++;
group-FlexBook 0:fa7450a43b99 103
group-FlexBook 0:fa7450a43b99 104 if (f_eof(pnm_file)) {
group-FlexBook 0:fa7450a43b99 105 found = 1;
group-FlexBook 0:fa7450a43b99 106 }
group-FlexBook 0:fa7450a43b99 107 }
group-FlexBook 0:fa7450a43b99 108 break;
group-FlexBook 0:fa7450a43b99 109 default:
group-FlexBook 0:fa7450a43b99 110 break;
group-FlexBook 0:fa7450a43b99 111 }
group-FlexBook 0:fa7450a43b99 112 }
group-FlexBook 0:fa7450a43b99 113
group-FlexBook 0:fa7450a43b99 114 if (!found)
group-FlexBook 0:fa7450a43b99 115 return -1;
group-FlexBook 0:fa7450a43b99 116
group-FlexBook 0:fa7450a43b99 117 *value = val;
group-FlexBook 0:fa7450a43b99 118
group-FlexBook 0:fa7450a43b99 119 return 0;
group-FlexBook 0:fa7450a43b99 120 }
group-FlexBook 0:fa7450a43b99 121
group-FlexBook 0:fa7450a43b99 122 int pnm_read_header(FIL *pnm_file, struct pnm_header *hdr)
group-FlexBook 0:fa7450a43b99 123 {
group-FlexBook 0:fa7450a43b99 124 char buffer[2];
group-FlexBook 0:fa7450a43b99 125 UINT count;
group-FlexBook 0:fa7450a43b99 126
group-FlexBook 0:fa7450a43b99 127 assert(pnm_file);
group-FlexBook 0:fa7450a43b99 128 assert(hdr);
group-FlexBook 0:fa7450a43b99 129
group-FlexBook 0:fa7450a43b99 130 hdr->type = PNM_UNKNOWN;
group-FlexBook 0:fa7450a43b99 131
group-FlexBook 0:fa7450a43b99 132 if (f_read(pnm_file,buffer,2,&count) != FR_OK)
group-FlexBook 0:fa7450a43b99 133 goto read_error;
group-FlexBook 0:fa7450a43b99 134
group-FlexBook 0:fa7450a43b99 135 if (buffer[0] != 'P')
group-FlexBook 0:fa7450a43b99 136 goto format_error;
group-FlexBook 0:fa7450a43b99 137
group-FlexBook 0:fa7450a43b99 138 if (buffer[1] == '4')
group-FlexBook 0:fa7450a43b99 139 hdr->type = PNM_BITMAP;
group-FlexBook 0:fa7450a43b99 140 else if (buffer[1] == '5')
group-FlexBook 0:fa7450a43b99 141 hdr->type = PNM_GREYSCALE;
group-FlexBook 0:fa7450a43b99 142 else
group-FlexBook 0:fa7450a43b99 143 goto format_error;
group-FlexBook 0:fa7450a43b99 144
group-FlexBook 0:fa7450a43b99 145 hdr->max_gray = 1;
group-FlexBook 0:fa7450a43b99 146 hdr->width = pnm_read_int(pnm_file);
group-FlexBook 0:fa7450a43b99 147 hdr->height = pnm_read_int(pnm_file);
group-FlexBook 0:fa7450a43b99 148
group-FlexBook 0:fa7450a43b99 149 if (hdr->type == PNM_GREYSCALE) {
group-FlexBook 0:fa7450a43b99 150 hdr->max_gray = pnm_read_int(pnm_file);
group-FlexBook 0:fa7450a43b99 151 }
group-FlexBook 0:fa7450a43b99 152 // check to see if any of the data items were not read correctly
group-FlexBook 0:fa7450a43b99 153 if (hdr->width <= 0 || hdr->height <= 0 || hdr->max_gray <= 0)
group-FlexBook 0:fa7450a43b99 154 goto format_error;
group-FlexBook 0:fa7450a43b99 155
group-FlexBook 0:fa7450a43b99 156 // read pointer is now positioned at start of image data
group-FlexBook 0:fa7450a43b99 157 return 0;
group-FlexBook 0:fa7450a43b99 158
group-FlexBook 0:fa7450a43b99 159 format_error:
group-FlexBook 0:fa7450a43b99 160 read_error:
group-FlexBook 0:fa7450a43b99 161 return -1;
group-FlexBook 0:fa7450a43b99 162 }