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zint/backend/tif.c
Harald Oehlmann ee763cb135 Do not free _alloca data
2018-02-13 16:53:12 +01:00

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/* tif.c - Aldus Tagged Image File Format support */
/*
libzint - the open source barcode library
Copyright (C) 2016-2017 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 <math.h>
#include "common.h"
#include "tif.h"
#ifdef _MSC_VER
#include <io.h>
#include <fcntl.h>
#include <malloc.h>
#endif
int tbump_up(int input) {
/* Strings length must be a multiple of 4 bytes */
if ((input % 2) == 1) {
input++;
}
return input;
}
int tif_pixel_plot(struct zint_symbol *symbol, char *pixelbuf) {
int fgred, fggrn, fgblu, bgred, bggrn, bgblu;
int i;
int rows_per_strip, strip_count;
int free_memory;
int row, column, strip, bytes_put;
FILE *tif_file;
#ifdef _MSC_VER
uint32_t* strip_offset;
uint32_t* strip_bytes;
#endif
tiff_header_t header;
tiff_ifd_t ifd;
uint16_t temp;
uint32_t temp32;
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]);
rows_per_strip = 8192 / (symbol->bitmap_width * 3);
if (rows_per_strip == 0) {
rows_per_strip = 1;
}
strip_count = symbol->bitmap_height / rows_per_strip;
if ((symbol->bitmap_height % rows_per_strip) != 0) {
strip_count++;
}
if (rows_per_strip > symbol->bitmap_height) {
rows_per_strip = symbol->bitmap_height;
}
if (strip_count == 1) {
rows_per_strip = (rows_per_strip / 2) + 1;
strip_count++;
}
#ifndef _MSC_VER
uint32_t strip_offset[strip_count];
uint32_t strip_bytes[strip_count];
#else
strip_offset = (uint32_t*) _alloca(strip_count * sizeof(uint32_t));
strip_bytes = (uint32_t*) _alloca(strip_count * sizeof(uint32_t));
#endif
free_memory = 8;
for(i = 0; i < strip_count; i++) {
strip_offset[i] = free_memory;
if (i != (strip_count - 1)) {
strip_bytes[i] = rows_per_strip * symbol->bitmap_width * 3;
} else {
if ((symbol->bitmap_height % rows_per_strip) != 0) {
strip_bytes[i] = (symbol->bitmap_height % rows_per_strip) * symbol->bitmap_width * 3;
} else {
strip_bytes[i] = rows_per_strip * symbol->bitmap_width * 3;
}
}
free_memory += strip_bytes[i];
if ((free_memory % 2) == 1) {
free_memory++;
}
}
if (free_memory > 0xffff0000) {
#ifdef _MSC_VER
free(strip_offset);
free(strip_bytes);
#endif
strcpy(symbol->errtxt, "670: Output file size too big");
return ZINT_ERROR_MEMORY;
}
/* Open output file in binary mode */
if (symbol->output_options & BARCODE_STDOUT) {
#ifdef _MSC_VER
if (-1 == _setmode(_fileno(stdout), _O_BINARY)) {
strcpy(symbol->errtxt, "671: Can't open output file");
return ZINT_ERROR_FILE_ACCESS;
}
#endif
tif_file = stdout;
} else {
if (!(tif_file = fopen(symbol->outfile, "wb"))) {
strcpy(symbol->errtxt, "672: Can't open output file");
return ZINT_ERROR_FILE_ACCESS;
}
}
/* Header */
header.byte_order = 0x4949;
header.identity = 42;
header.offset = free_memory;
fwrite(&header, sizeof(tiff_header_t), 1, tif_file);
free_memory += sizeof(tiff_ifd_t);
/* Pixel data */
strip = 0;
bytes_put = 0;
for (row = 0; row < symbol->bitmap_height; row++) {
for (column = 0; column < symbol->bitmap_width; column++) {
if (pixelbuf[(row * symbol->bitmap_width) + column] == '1') {
putc(fgred, tif_file);
putc(fggrn, tif_file);
putc(fgblu, tif_file);
} else {
putc(bgred, tif_file);
putc(bggrn, tif_file);
putc(bgblu, tif_file);
}
bytes_put += 3;
}
if ((bytes_put + 3) >= strip_bytes[strip]) {
// End of strip, pad if strip length is odd
if (strip_bytes[strip] % 2 == 1) {
putc(0, tif_file);
}
strip++;
bytes_put = 0;
}
}
/* Image File Directory */
ifd.entries = 14;
ifd.offset = 0;
ifd.new_subset.tag = 0xfe;
ifd.new_subset.type = 4;
ifd.new_subset.count = 1;
ifd.new_subset.offset = 0;
ifd.image_width.tag = 0x0100;
ifd.image_width.type = 3; // SHORT
ifd.image_width.count = 1;
ifd.image_width.offset = symbol->bitmap_width;
ifd.image_length.tag = 0x0101;
ifd.image_length.type = 3; // SHORT
ifd.image_length.count = 1;
ifd.image_length.offset = symbol->bitmap_height;
ifd.bits_per_sample.tag = 0x0102;
ifd.bits_per_sample.type = 3; // SHORT
ifd.bits_per_sample.count = 3;
ifd.bits_per_sample.offset = free_memory;
free_memory += 6;
ifd.compression.tag = 0x0103;
ifd.compression.type = 3;
ifd.compression.count = 1;
ifd.compression.offset = 1; // Uncompressed
ifd.photometric.tag = 0x0106;
ifd.photometric.type = 3; // SHORT
ifd.photometric.count = 1;
ifd.photometric.offset = 2; // RGB Model
ifd.strip_offsets.tag = 0x0111;
ifd.strip_offsets.type = 4; // LONG
ifd.strip_offsets.count = strip_count;
ifd.strip_offsets.offset = free_memory;
free_memory += strip_count * 4;
ifd.samples_per_pixel.tag = 0x0115;
ifd.samples_per_pixel.type = 3;
ifd.samples_per_pixel.count = 1;
ifd.samples_per_pixel.offset = 3;
ifd.rows_per_strip.tag = 0x0116;
ifd.rows_per_strip.type = 4;
ifd.rows_per_strip.count = 1;
ifd.rows_per_strip.offset = rows_per_strip;
ifd.strip_byte_counts.tag = 0x0117;
ifd.strip_byte_counts.type = 4;
ifd.strip_byte_counts.count = strip_count;
ifd.strip_byte_counts.offset = free_memory;
free_memory += strip_count * 4;
ifd.x_resolution.tag = 0x011a;
ifd.x_resolution.type = 5;
ifd.x_resolution.count = 1;
ifd.x_resolution.offset = free_memory;
free_memory += 8;
ifd.y_resolution.tag = 0x011b;
ifd.y_resolution.type = 5;
ifd.y_resolution.count = 1;
ifd.y_resolution.offset = free_memory;
// free_memory += 8;
ifd.planar_config.tag = 0x11c;
ifd.planar_config.type = 3;
ifd.planar_config.count = 1;
ifd.planar_config.offset = 1;
ifd.resolution_unit.tag = 0x0128;
ifd.resolution_unit.type = 3;
ifd.resolution_unit.count = 1;
ifd.resolution_unit.offset = 2; // Inches
fwrite(&ifd, sizeof(tiff_ifd_t), 1, tif_file);
/* Bits per sample */
temp = 8;
fwrite(&temp, 2, 1, tif_file); // Red Bytes
fwrite(&temp, 2, 1, tif_file); // Green Bytes
fwrite(&temp, 2, 1, tif_file); // Blue Bytes
/* Strip offsets */
for(i = 0; i < strip_count; i++) {
fwrite(&strip_offset[i], 4, 1, tif_file);
}
/* Strip byte lengths */
for(i = 0; i < strip_count; i++) {
fwrite(&strip_bytes[i], 4, 1, tif_file);
}
/* X Resolution */
temp32 = 72;
fwrite(&temp32, 4, 1, tif_file);
temp32 = 1;
fwrite(&temp32, 4, 1, tif_file);
/* Y Resolution */
temp32 = 72;
fwrite(&temp32, 4, 1, tif_file);
temp32 = 1;
fwrite(&temp32, 4, 1, tif_file);
if (symbol->output_options & BARCODE_STDOUT) {
fflush(tif_file);
} else {
fclose(tif_file);
}
return 0;
}
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