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149 lines
5.6 KiB
C
149 lines
5.6 KiB
C
/* bmp.c - Handles output to Windows Bitmap file */
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/*
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libzint - the open source barcode library
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Copyright (C) 2009-2017 Robin Stuart <rstuart114@gmail.com>
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the project nor the names of its contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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SUCH DAMAGE.
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*/
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/* vim: set ts=4 sw=4 et : */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "common.h"
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#include "bmp.h" /* Bitmap header structure */
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#include <math.h>
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#ifdef _MSC_VER
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#include <io.h>
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#include <fcntl.h>
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#endif
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#define SSET "0123456789ABCDEF"
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INTERNAL int bmp_pixel_plot(struct zint_symbol *symbol, char *pixelbuf) {
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int i, row, column;
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int fgred, fggrn, fgblu, bgred, bggrn, bgblu;
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int row_size;
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unsigned int data_size;
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unsigned char *bitmap_file_start, *bmp_posn;
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char *bitmap;
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FILE *bmp_file;
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bitmap_file_header_t file_header;
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bitmap_info_header_t info_header;
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if (symbol->bitmap != NULL)
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free(symbol->bitmap);
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row_size = 4 * floor((24.0 * symbol->bitmap_width + 31) / 32);
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bitmap = (char *) malloc(row_size * symbol->bitmap_height);
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fgred = (16 * ctoi(symbol->fgcolour[0])) + ctoi(symbol->fgcolour[1]);
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fggrn = (16 * ctoi(symbol->fgcolour[2])) + ctoi(symbol->fgcolour[3]);
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fgblu = (16 * ctoi(symbol->fgcolour[4])) + ctoi(symbol->fgcolour[5]);
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bgred = (16 * ctoi(symbol->bgcolour[0])) + ctoi(symbol->bgcolour[1]);
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bggrn = (16 * ctoi(symbol->bgcolour[2])) + ctoi(symbol->bgcolour[3]);
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bgblu = (16 * ctoi(symbol->bgcolour[4])) + ctoi(symbol->bgcolour[5]);
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/* Pixel Plotting */
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i = 0;
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for (row = 0; row < symbol->bitmap_height; row++) {
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for (column = 0; column < symbol->bitmap_width; column++) {
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i = (3 * column) + (row * row_size);
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switch (*(pixelbuf + (symbol->bitmap_width * (symbol->bitmap_height - row - 1)) + column)) {
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case '1':
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bitmap[i] = fgblu;
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bitmap[i + 1] = fggrn;
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bitmap[i + 2] = fgred;
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break;
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default:
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bitmap[i] = bgblu;
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bitmap[i + 1] = bggrn;
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bitmap[i + 2] = bgred;
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break;
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}
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}
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}
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data_size = symbol->bitmap_height * row_size;
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symbol->bitmap_byte_length = data_size;
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file_header.header_field = 0x4d42; // "BM"
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file_header.file_size = sizeof (bitmap_file_header_t) + sizeof (bitmap_info_header_t) + data_size;
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file_header.reserved = 0;
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file_header.data_offset = sizeof (bitmap_file_header_t) + sizeof (bitmap_info_header_t);
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info_header.header_size = sizeof (bitmap_info_header_t);
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info_header.width = symbol->bitmap_width;
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info_header.height = symbol->bitmap_height;
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info_header.colour_planes = 1;
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info_header.bits_per_pixel = 24;
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info_header.compression_method = 0; // BI_RGB
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info_header.image_size = 0;
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info_header.horiz_res = 0;
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info_header.vert_res = 0;
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info_header.colours = 0;
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info_header.important_colours = 0;
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bitmap_file_start = (unsigned char*) malloc(file_header.file_size);
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memset(bitmap_file_start, 0xff, file_header.file_size);
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bmp_posn = bitmap_file_start;
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memcpy(bitmap_file_start, &file_header, sizeof (bitmap_file_header_t));
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bmp_posn += sizeof (bitmap_file_header_t);
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memcpy(bmp_posn, &info_header, sizeof (bitmap_info_header_t));
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bmp_posn += sizeof (bitmap_info_header_t);
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memcpy(bmp_posn, bitmap, data_size);
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/* Open output file in binary mode */
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if ((symbol->output_options & BARCODE_STDOUT) != 0) {
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#ifdef _MSC_VER
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if (-1 == _setmode(_fileno(stdout), _O_BINARY)) {
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strcpy(symbol->errtxt, "600: Can't open output file");
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free(bitmap_file_start);
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free(bitmap);
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return ZINT_ERROR_FILE_ACCESS;
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}
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#endif
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bmp_file = stdout;
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} else {
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if (!(bmp_file = fopen(symbol->outfile, "wb"))) {
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free(bitmap_file_start);
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free(bitmap);
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strcpy(symbol->errtxt, "601: Can't open output file");
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return ZINT_ERROR_FILE_ACCESS;
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}
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}
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fwrite(bitmap_file_start, file_header.file_size, 1, bmp_file);
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fclose(bmp_file);
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free(bitmap_file_start);
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free(bitmap);
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return 0;
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}
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