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zint/backend/bmp.c
gitlost 3f33ed3eb9 CMakeLists.txt: cmake min required 3.13 -> 3.5 using CMAKE_REQUIRED_LIBRARIES; add ZINT_COVERAGE option 
bmp/emf/ps.c: allow for foreground colour in ULTRA
bmp/gif/pcx.c: allow for BARCODE_STDOUT (fflush/fclose)
emf.c: hexagon rotation field not used; dont't use float index in font loop; Windows stdout binary mode
png.c: remove unused 8-bit; simplify libpng error handling and fclose outfile on error
ps.c: fix buffer overflow on colour_to_pscolor() CMYK
tif.c: fix BLACKISZERO indexes
CODE39: simplify check digit setting
reedsol.c: rs_uint_init_gf() log/alog tables must be zeroed
ZBarcode_Encode: debug: fix access out-of-bounds on non-NUL-terminated source if length < 10
manual.txt/zint.h: document NUL-terminated strings
tests: cover further cases for output (bmp/emf/etc), eci/gb18030/gb2312/sjis, reedsol, AZTEC, CODE39
2021-07-26 15:29:05 +01:00

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/* bmp.c - Handles output to Windows Bitmap file */
/*
libzint - the open source barcode library
Copyright (C) 2009 - 2021 Robin Stuart <rstuart114@gmail.com>
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. Neither the name of the project nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
*/
/* vim: set ts=4 sw=4 et : */
#include <errno.h>
#include <stdio.h>
#include "common.h"
#include "bmp.h" /* Bitmap header structure */
#ifdef _MSC_VER
#include <io.h>
#include <fcntl.h>
#endif
INTERNAL int bmp_pixel_plot(struct zint_symbol *symbol, unsigned char *pixelbuf) {
int i, row, column;
int row_size;
int bits_per_pixel;
int colour_count;
unsigned int data_offset, data_size, file_size;
unsigned char *bitmap_file_start, *bmp_posn;
unsigned char *bitmap;
FILE *bmp_file;
bitmap_file_header_t file_header;
bitmap_info_header_t info_header;
color_ref_t bg_color_ref;
color_ref_t fg_color_ref;
color_ref_t ultra_color_ref[8];
int ultra_fg_index = 9;
const int output_to_stdout = symbol->output_options & BARCODE_STDOUT; /* Suppress gcc -fanalyzer warning */
fg_color_ref.red = (16 * ctoi(symbol->fgcolour[0])) + ctoi(symbol->fgcolour[1]);
fg_color_ref.green = (16 * ctoi(symbol->fgcolour[2])) + ctoi(symbol->fgcolour[3]);
fg_color_ref.blue = (16 * ctoi(symbol->fgcolour[4])) + ctoi(symbol->fgcolour[5]);
fg_color_ref.reserved = 0x00;
bg_color_ref.red = (16 * ctoi(symbol->bgcolour[0])) + ctoi(symbol->bgcolour[1]);
bg_color_ref.green = (16 * ctoi(symbol->bgcolour[2])) + ctoi(symbol->bgcolour[3]);
bg_color_ref.blue = (16 * ctoi(symbol->bgcolour[4])) + ctoi(symbol->bgcolour[5]);
bg_color_ref.reserved = 0x00;
if (symbol->symbology == BARCODE_ULTRA) {
for (i = 0; i < 8; i++) {
ultra_color_ref[i].red = colour_to_red(i + 1);
ultra_color_ref[i].green = colour_to_green(i + 1);
ultra_color_ref[i].blue = colour_to_blue(i + 1);
ultra_color_ref[i].reserved = 0x00;
if (memcmp(&ultra_color_ref[i], &fg_color_ref, sizeof(fg_color_ref)) == 0) {
ultra_fg_index = i + 1;
}
}
bits_per_pixel = 4;
colour_count = ultra_fg_index == 9 ? 10 : 9;
} else {
bits_per_pixel = 1;
colour_count = 2;
}
row_size = 4 * ((bits_per_pixel * symbol->bitmap_width + 31) / 32);
data_size = symbol->bitmap_height * row_size;
data_offset = sizeof(bitmap_file_header_t) + sizeof(bitmap_info_header_t);
data_offset += colour_count * sizeof(color_ref_t);
file_size = data_offset + data_size;
bitmap_file_start = (unsigned char *) malloc(file_size);
if (bitmap_file_start == NULL) {
strcpy(symbol->errtxt, "602: Insufficient memory for BMP file buffer");
return ZINT_ERROR_MEMORY;
}
memset(bitmap_file_start, 0, file_size); /* Not required but keeps padding bytes consistent */
bitmap = bitmap_file_start + data_offset;
/* Pixel Plotting */
if (symbol->symbology == BARCODE_ULTRA) {
for (row = 0; row < symbol->bitmap_height; row++) {
for (column = 0; column < symbol->bitmap_width; column++) {
i = (column / 2) + (row * row_size);
switch (*(pixelbuf + (symbol->bitmap_width * (symbol->bitmap_height - row - 1)) + column)) {
case 'C': // Cyan
bitmap[i] += 1 << (4 * (1 - (column % 2)));
break;
case 'B': // Blue
bitmap[i] += 2 << (4 * (1 - (column % 2)));
break;
case 'M': // Magenta
bitmap[i] += 3 << (4 * (1 - (column % 2)));
break;
case 'R': // Red
bitmap[i] += 4 << (4 * (1 - (column % 2)));
break;
case 'Y': // Yellow
bitmap[i] += 5 << (4 * (1 - (column % 2)));
break;
case 'G': // Green
bitmap[i] += 6 << (4 * (1 - (column % 2)));
break;
case 'K': // Black
bitmap[i] += 7 << (4 * (1 - (column % 2)));
break;
case 'W': // White
bitmap[i] += 8 << (4 * (1 - (column % 2)));
break;
case '1': // Foreground
bitmap[i] += ultra_fg_index << (4 * (1 - (column % 2)));
break;
}
}
}
} else {
for (row = 0; row < symbol->bitmap_height; row++) {
for (column = 0; column < symbol->bitmap_width; column++) {
i = (column / 8) + (row * row_size);
if ((*(pixelbuf + (symbol->bitmap_width * (symbol->bitmap_height - row - 1)) + column)) == '1') {
bitmap[i] += (0x01 << (7 - (column % 8)));
}
}
}
}
symbol->bitmap_byte_length = data_size;
file_header.header_field = 0x4d42; // "BM"
file_header.file_size = file_size;
file_header.reserved = 0;
file_header.data_offset = data_offset;
info_header.header_size = sizeof(bitmap_info_header_t);
info_header.width = symbol->bitmap_width;
info_header.height = symbol->bitmap_height;
info_header.colour_planes = 1;
info_header.bits_per_pixel = bits_per_pixel;
info_header.compression_method = 0; // BI_RGB
info_header.image_size = 0;
info_header.horiz_res = 0;
info_header.vert_res = 0;
info_header.colours = colour_count;
info_header.important_colours = colour_count;
bmp_posn = bitmap_file_start;
memcpy(bitmap_file_start, &file_header, sizeof(bitmap_file_header_t));
bmp_posn += sizeof(bitmap_file_header_t);
memcpy(bmp_posn, &info_header, sizeof(bitmap_info_header_t));
bmp_posn += sizeof(bitmap_info_header_t);
memcpy(bmp_posn, &bg_color_ref, sizeof(color_ref_t));
if (symbol->symbology == BARCODE_ULTRA) {
for (i = 0; i < 8; i++) {
bmp_posn += sizeof(color_ref_t);
memcpy(bmp_posn, &ultra_color_ref[i], sizeof(color_ref_t));
}
if (ultra_fg_index == 9) {
bmp_posn += sizeof(color_ref_t);
memcpy(bmp_posn, &fg_color_ref, sizeof(color_ref_t));
}
} else {
bmp_posn += sizeof(color_ref_t);
memcpy(bmp_posn, &fg_color_ref, sizeof(color_ref_t));
}
/* Open output file in binary mode */
if (output_to_stdout) {
#ifdef _MSC_VER
if (-1 == _setmode(_fileno(stdout), _O_BINARY)) {
sprintf(symbol->errtxt, "600: Could not set stdout to binary (%d: %.30s)", errno, strerror(errno));
free(bitmap_file_start);
return ZINT_ERROR_FILE_ACCESS;
}
#endif
bmp_file = stdout;
} else {
if (!(bmp_file = fopen(symbol->outfile, "wb"))) {
free(bitmap_file_start);
sprintf(symbol->errtxt, "601: Could not open output file (%d: %.30s)", errno, strerror(errno));
return ZINT_ERROR_FILE_ACCESS;
}
}
fwrite(bitmap_file_start, file_header.file_size, 1, bmp_file);
if (output_to_stdout) {
fflush(bmp_file);
} else {
fclose(bmp_file);
}
free(bitmap_file_start);
return 0;
}
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