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zint-barcode-generator/backend/pcx.c
Harald Oehlmann 3939a1ae54 Make compile with MSVC6 (no C99 compatibility)
2016-07-28 10:32:46 +02:00

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/* pcx.c - Handles output to ZSoft PCX file */
/*
libzint - the open source barcode library
Copyright (C) 2009-2016 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.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "common.h"
#include "pcx.h" /* PCX header structure */
#include <math.h>
#ifdef _MSC_VER
#include <io.h>
#include <fcntl.h>
#endif
#define SSET "0123456789ABCDEF"
int pcx_pixel_plot(struct zint_symbol *symbol, int image_height, int image_width, char *pixelbuf, int rotate_angle) {
int fgred, fggrn, fgblu, bgred, bggrn, bgblu;
int errno;
int row, column, i, colour;
int run_count;
FILE *pcx_file;
pcx_header_t header;
#ifdef _MSC_VER
char* rotated_bitmap;
unsigned char* rle_row;
#endif
#ifndef _MSC_VER
char rotated_bitmap[image_height * image_width];
#else
rotated_bitmap = (char *) _alloca((image_height * image_width) * sizeof(char));
#endif /* _MSC_VER */
switch (rotate_angle) {
case 0:
case 180:
symbol->bitmap_width = image_width;
symbol->bitmap_height = image_height;
break;
case 90:
case 270:
symbol->bitmap_width = image_height;
symbol->bitmap_height = image_width;
break;
}
#ifndef _MSC_VER
unsigned char rle_row[symbol->bitmap_width];
#else
rle_row = (unsigned char *) _alloca((symbol->bitmap_width * 6) * sizeof(unsigned char));
#endif /* _MSC_VER */
/* sort out colour options */
to_upper((unsigned char*) symbol->fgcolour);
to_upper((unsigned char*) symbol->bgcolour);
if (strlen(symbol->fgcolour) != 6) {
strcpy(symbol->errtxt, "Malformed foreground colour target");
return ZINT_ERROR_INVALID_OPTION;
}
if (strlen(symbol->bgcolour) != 6) {
strcpy(symbol->errtxt, "Malformed background colour target");
return ZINT_ERROR_INVALID_OPTION;
}
errno = is_sane(SSET, (unsigned char*) symbol->fgcolour, strlen(symbol->fgcolour));
if (errno == ZINT_ERROR_INVALID_DATA) {
strcpy(symbol->errtxt, "Malformed foreground colour target");
return ZINT_ERROR_INVALID_OPTION;
}
errno = is_sane(SSET, (unsigned char*) symbol->bgcolour, strlen(symbol->fgcolour));
if (errno == ZINT_ERROR_INVALID_DATA) {
strcpy(symbol->errtxt, "Malformed background colour target");
return ZINT_ERROR_INVALID_OPTION;
}
fgred = (16 * ctoi(symbol->fgcolour[0])) + ctoi(symbol->fgcolour[1]);
fggrn = (16 * ctoi(symbol->fgcolour[2])) + ctoi(symbol->fgcolour[3]);
fgblu = (16 * ctoi(symbol->fgcolour[4])) + ctoi(symbol->fgcolour[5]);
bgred = (16 * ctoi(symbol->bgcolour[0])) + ctoi(symbol->bgcolour[1]);
bggrn = (16 * ctoi(symbol->bgcolour[2])) + ctoi(symbol->bgcolour[3]);
bgblu = (16 * ctoi(symbol->bgcolour[4])) + ctoi(symbol->bgcolour[5]);
/* Rotate image before plotting */
switch (rotate_angle) {
case 0: /* Plot the right way up */
for (row = 0; row < image_height; row++) {
for (column = 0; column < image_width; column++) {
rotated_bitmap[(row * image_width) + column] =
*(pixelbuf + (image_width * row) + column);
}
}
break;
case 90: /* Plot 90 degrees clockwise */
for (row = 0; row < image_width; row++) {
for (column = 0; column < image_height; column++) {
rotated_bitmap[(row * image_height) + column] =
*(pixelbuf + (image_width * (image_height - column - 1)) + row);
}
}
break;
case 180: /* Plot upside down */
for (row = 0; row < image_height; row++) {
for (column = 0; column < image_width; column++) {
rotated_bitmap[(row * image_width) + column] =
*(pixelbuf + (image_width * (image_height - row - 1)) + (image_width - column - 1));
}
}
break;
case 270: /* Plot 90 degrees anti-clockwise */
for (row = 0; row < image_width; row++) {
for (column = 0; column < image_height; column++) {
rotated_bitmap[(row * image_height) + column] =
*(pixelbuf + (image_width * column) + (image_width - row - 1));
}
}
break;
}
header.manufacturer = 10; // ZSoft
header.version = 5; // Version 3.0
header.encoding = 1; // Run length encoding
header.bits_per_pixel = 8;
header.window_xmin = 0;
header.window_ymin = 0;
header.window_xmax = symbol->bitmap_width - 1;
header.window_ymax = symbol->bitmap_height - 1;
header.horiz_dpi = 300;
header.vert_dpi = 300;
for(i = 0; i < 48; i++) {
header.colourmap[i] = 0x00;
}
header.reserved = 0;
header.number_of_planes = 3;
if (symbol->bitmap_width % 2) {
header.bytes_per_line = symbol->bitmap_width + 1;
} else {
header.bytes_per_line = symbol->bitmap_width;
}
header.palette_info = 1; // Colour
header.horiz_screen_size = 0;
header.vert_screen_size = 0;
for(i = 0; i < 54; i++) {
header.filler[i] = 0x00;
}
/* Open output file in binary mode */
if ((symbol->output_options & BARCODE_STDOUT) != 0) {
#ifdef _MSC_VER
if (-1 == _setmode(_fileno(stdout), _O_BINARY)) {
strcpy(symbol->errtxt, "Can't open output file");
return ZINT_ERROR_FILE_ACCESS;
}
#endif
pcx_file = stdout;
} else {
if (!(pcx_file = fopen(symbol->outfile, "wb"))) {
strcpy(symbol->errtxt, "Can't open output file");
return ZINT_ERROR_FILE_ACCESS;
}
}
fwrite(&header, sizeof(pcx_header_t), 1, pcx_file);
for(row = 0; row < symbol->bitmap_height; row++) {
for (colour = 0; colour < 3; colour++) {
for (column = 0; column < symbol->bitmap_width; column++) {
switch(colour) {
case 0:
if (rotated_bitmap[(row * symbol->bitmap_width) + column] == '1') {
rle_row[column] = fgred;
} else {
rle_row[column] = bgred;
}
break;
case 1:
if (rotated_bitmap[(row * symbol->bitmap_width) + column] == '1') {
rle_row[column] = fggrn;
} else {
rle_row[column] = bggrn;
}
break;
case 2:
if (rotated_bitmap[(row * symbol->bitmap_width) + column] == '1') {
rle_row[column] = fgblu;
} else {
rle_row[column] = bgblu;
}
break;
}
}
run_count = 1;
for (column = 1; column < symbol->bitmap_width; column++) {
if ((rle_row[column - 1] == rle_row[column]) && (run_count < 63)) {
run_count++;
} else {
run_count += 0xc0;
fputc(run_count, pcx_file);
fputc(rle_row[column - 1], pcx_file);
run_count = 1;
}
}
if (run_count > 1) {
run_count += 0xc0;
fputc(run_count, pcx_file);
fputc(rle_row[column - 1], pcx_file);
}
}
}
fclose(pcx_file);
return 0;
}
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