1 /* bmp.c - Handles output to Windows Bitmap file */
2
3 /*
4 libzint - the open source barcode library
5 Copyright (C) 2009-2017 Robin Stuart <rstuart114@gmail.com>
6
7 Redistribution and use in source and binary forms, with or without
8 modification, are permitted provided that the following conditions
9 are met:
10
11 1. Redistributions of source code must retain the above copyright
12 notice, this list of conditions and the following disclaimer.
13 2. Redistributions in binary form must reproduce the above copyright
14 notice, this list of conditions and the following disclaimer in the
15 documentation and/or other materials provided with the distribution.
16 3. Neither the name of the project nor the names of its contributors
17 may be used to endorse or promote products derived from this software
18 without specific prior written permission.
19
20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
21 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
24 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 SUCH DAMAGE.
31 */
32
33 #include <stdio.h>
34 #include <stdlib.h>
35 #include <string.h>
36 #include "common.h"
37 #include "bmp.h" /* Bitmap header structure */
38 #include <math.h>
39 #ifdef _MSC_VER
40 #include <io.h>
41 #include <fcntl.h>
42 #endif
43
44 #define SSET "0123456789ABCDEF"
45
bmp_pixel_plot(struct zint_symbol * symbol,char * pixelbuf)46 int bmp_pixel_plot(struct zint_symbol *symbol, char *pixelbuf) {
47 int i, row, column;
48 int fgred, fggrn, fgblu, bgred, bggrn, bgblu;
49 int row_size;
50 unsigned int data_size;
51 unsigned char *bitmap_file_start, *bmp_posn;
52 char *bitmap;
53 FILE *bmp_file;
54 bitmap_file_header_t file_header;
55 bitmap_info_header_t info_header;
56
57 if (symbol->bitmap != NULL)
58 free(symbol->bitmap);
59
60 row_size = 4 * floor((24.0 * symbol->bitmap_width + 31) / 32);
61 bitmap = (char *) malloc(row_size * symbol->bitmap_height);
62
63 fgred = (16 * ctoi(symbol->fgcolour[0])) + ctoi(symbol->fgcolour[1]);
64 fggrn = (16 * ctoi(symbol->fgcolour[2])) + ctoi(symbol->fgcolour[3]);
65 fgblu = (16 * ctoi(symbol->fgcolour[4])) + ctoi(symbol->fgcolour[5]);
66 bgred = (16 * ctoi(symbol->bgcolour[0])) + ctoi(symbol->bgcolour[1]);
67 bggrn = (16 * ctoi(symbol->bgcolour[2])) + ctoi(symbol->bgcolour[3]);
68 bgblu = (16 * ctoi(symbol->bgcolour[4])) + ctoi(symbol->bgcolour[5]);
69
70 /* Pixel Plotting */
71 i = 0;
72 for (row = 0; row < symbol->bitmap_height; row++) {
73 for (column = 0; column < symbol->bitmap_width; column++) {
74 i = (3 * column) + (row * row_size);
75 switch (*(pixelbuf + (symbol->bitmap_width * (symbol->bitmap_height - row - 1)) + column)) {
76 case '1':
77 bitmap[i] = fgblu;
78 bitmap[i + 1] = fggrn;
79 bitmap[i + 2] = fgred;
80 break;
81 default:
82 bitmap[i] = bgblu;
83 bitmap[i + 1] = bggrn;
84 bitmap[i + 2] = bgred;
85 break;
86
87 }
88 }
89 }
90
91 data_size = symbol->bitmap_height * row_size;
92 symbol->bitmap_byte_length = data_size;
93
94 file_header.header_field = 0x4d42; // "BM"
95 file_header.file_size = sizeof (bitmap_file_header_t) + sizeof (bitmap_info_header_t) + data_size;
96 file_header.reserved = 0;
97 file_header.data_offset = sizeof (bitmap_file_header_t) + sizeof (bitmap_info_header_t);
98
99 info_header.header_size = sizeof (bitmap_info_header_t);
100 info_header.width = symbol->bitmap_width;
101 info_header.height = symbol->bitmap_height;
102 info_header.colour_planes = 1;
103 info_header.bits_per_pixel = 24;
104 info_header.compression_method = 0; // BI_RGB
105 info_header.image_size = 0;
106 info_header.horiz_res = 0;
107 info_header.vert_res = 0;
108 info_header.colours = 0;
109 info_header.important_colours = 0;
110
111 bitmap_file_start = (unsigned char*) malloc(file_header.file_size);
112 memset(bitmap_file_start, 0xff, file_header.file_size);
113
114 bmp_posn = bitmap_file_start;
115 memcpy(bitmap_file_start, &file_header, sizeof (bitmap_file_header_t));
116 bmp_posn += sizeof (bitmap_file_header_t);
117 memcpy(bmp_posn, &info_header, sizeof (bitmap_info_header_t));
118 bmp_posn += sizeof (bitmap_info_header_t);
119 memcpy(bmp_posn, bitmap, data_size);
120
121 /* Open output file in binary mode */
122 if ((symbol->output_options & BARCODE_STDOUT) != 0) {
123 #ifdef _MSC_VER
124 if (-1 == _setmode(_fileno(stdout), _O_BINARY)) {
125 strcpy(symbol->errtxt, "600: Can't open output file");
126 free(bitmap_file_start);
127 free(bitmap);
128 return ZINT_ERROR_FILE_ACCESS;
129 }
130 #endif
131 bmp_file = stdout;
132 } else {
133 if (!(bmp_file = fopen(symbol->outfile, "wb"))) {
134 free(bitmap_file_start);
135 free(bitmap);
136 strcpy(symbol->errtxt, "601: Can't open output file");
137 return ZINT_ERROR_FILE_ACCESS;
138 }
139 }
140
141 fwrite(bitmap_file_start, file_header.file_size, 1, bmp_file);
142 fclose(bmp_file);
143
144 free(bitmap_file_start);
145 free(bitmap);
146 return 0;
147 }
148