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https://git.code.sf.net/p/zint/code
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backend: define z_alloca() and use for both Unix and Windows;
replace double-slash comments with old-skool slash asterisk ones; define uint16_t etc for Windows ourselves and remove ms_stdint.h & stdint_msvc.h as no longer used; (backend (excepting test suite) now C89 compatible) LICENSE: move from backend to root and move COPYING to frontend, with copies in frontend_qt & backend_qt, so in where it applies; add LICENSE section from manual to root README
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70 changed files with 2650 additions and 2038 deletions
103
backend/tif.c
103
backend/tif.c
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@ -1,9 +1,7 @@
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/* tif.c - Aldus Tagged Image File Format support */
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/* TIFF Revision 6.0 https://www.adobe.io/content/dam/udp/en/open/standards/tiff/TIFF6.pdf */
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/*
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libzint - the open source barcode library
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Copyright (C) 2016 - 2021 Robin Stuart <rstuart114@gmail.com>
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Copyright (C) 2016-2022 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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@ -30,20 +28,17 @@
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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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/* SPDX-License-Identifier: BSD-3-Clause */
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#include <assert.h>
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#include <errno.h>
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#include <stdio.h>
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#include <math.h>
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#include <assert.h>
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#include <limits.h>
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#include "common.h"
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#include "tif.h"
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#include "tif_lzw.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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#include <malloc.h>
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#endif
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/* PhotometricInterpretation */
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@ -83,6 +78,7 @@ static int is_big_endian(void) {
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return (*((const uint16_t *)"\x11\x22") == 0x1122);
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}
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/* TIFF Revision 6.0 https://www.adobe.io/content/dam/udp/en/open/standards/tiff/TIFF6.pdf */
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INTERNAL int tif_pixel_plot(struct zint_symbol *symbol, unsigned char *pixelbuf) {
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unsigned char fg[4], bg[4];
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int i;
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@ -109,11 +105,9 @@ INTERNAL int tif_pixel_plot(struct zint_symbol *symbol, unsigned char *pixelbuf)
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tif_lzw_state lzw_state;
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long file_pos;
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const int output_to_stdout = symbol->output_options & BARCODE_STDOUT;
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#ifdef _MSC_VER
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uint32_t* strip_offset;
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uint32_t* strip_bytes;
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uint32_t *strip_offset;
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uint32_t *strip_bytes;
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unsigned char *strip_buf;
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#endif
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tiff_header_t header;
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uint16_t entries = 0;
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@ -297,15 +291,10 @@ INTERNAL int tif_pixel_plot(struct zint_symbol *symbol, unsigned char *pixelbuf)
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bytes_per_strip = rows_per_strip * ((symbol->bitmap_width + pixels_per_sample - 1) / pixels_per_sample)
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* samples_per_pixel;
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#ifndef _MSC_VER
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uint32_t strip_offset[strip_count];
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uint32_t strip_bytes[strip_count];
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unsigned char strip_buf[bytes_per_strip + 1];
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#else
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strip_offset = (uint32_t *) _alloca(strip_count * sizeof(uint32_t));
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strip_bytes = (uint32_t *) _alloca(strip_count * sizeof(uint32_t));
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strip_buf = (unsigned char *) _alloca(bytes_per_strip + 1);
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#endif
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strip_offset = (uint32_t *) z_alloca(sizeof(uint32_t) * strip_count);
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strip_bytes = (uint32_t *) z_alloca(sizeof(uint32_t) * strip_count);
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strip_buf = (unsigned char *) z_alloca(bytes_per_strip + 1);
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free_memory = sizeof(tiff_header_t);
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for (i = 0; i < strip_count; i++) {
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@ -324,7 +313,7 @@ INTERNAL int tif_pixel_plot(struct zint_symbol *symbol, unsigned char *pixelbuf)
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free_memory += strip_bytes[i];
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}
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if (free_memory & 1) {
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free_memory++; // IFD must be on word boundary
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free_memory++; /* IFD must be on word boundary */
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}
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if (free_memory > 0xffff0000) {
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@ -352,9 +341,9 @@ INTERNAL int tif_pixel_plot(struct zint_symbol *symbol, unsigned char *pixelbuf)
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/* Header */
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if (is_big_endian()) {
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header.byte_order = 0x4D4D; // "MM" big-endian
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header.byte_order = 0x4D4D; /* "MM" big-endian */
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} else {
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header.byte_order = 0x4949; // "II" little-endian
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header.byte_order = 0x4949; /* "II" little-endian */
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}
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header.identity = 42;
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header.offset = free_memory;
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@ -403,7 +392,7 @@ INTERNAL int tif_pixel_plot(struct zint_symbol *symbol, unsigned char *pixelbuf)
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strip_row++;
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if (strip_row == rows_per_strip || (strip == strip_count - 1 && strip_row == rows_last_strip)) {
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// End of strip
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/* End of strip */
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if (compression == TIF_LZW) {
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file_pos = ftell(tif_file);
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if (!tif_lzw_encode(&lzw_state, tif_file, strip_buf, bytes_put)) { /* Only fails if can't malloc */
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@ -433,7 +422,7 @@ INTERNAL int tif_pixel_plot(struct zint_symbol *symbol, unsigned char *pixelbuf)
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}
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if (total_bytes_put & 1) {
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putc(0, tif_file); // IFD must be on word boundary
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putc(0, tif_file); /* IFD must be on word boundary */
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total_bytes_put++;
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}
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@ -448,19 +437,19 @@ INTERNAL int tif_pixel_plot(struct zint_symbol *symbol, unsigned char *pixelbuf)
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}
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/* Image File Directory */
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tags[entries].tag = 0x0100; // ImageWidth
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tags[entries].type = 3; // SHORT
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tags[entries].tag = 0x0100; /* ImageWidth */
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tags[entries].type = 3; /* SHORT */
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tags[entries].count = 1;
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tags[entries++].offset = symbol->bitmap_width;
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tags[entries].tag = 0x0101; // ImageLength - number of rows
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tags[entries].type = 3; // SHORT
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tags[entries].tag = 0x0101; /* ImageLength - number of rows */
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tags[entries].type = 3; /* SHORT */
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tags[entries].count = 1;
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tags[entries++].offset = symbol->bitmap_height;
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if (samples_per_pixel != 1 || bits_per_sample != 1) {
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tags[entries].tag = 0x0102; // BitsPerSample
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tags[entries].type = 3; // SHORT
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tags[entries].tag = 0x0102; /* BitsPerSample */
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tags[entries].type = 3; /* SHORT */
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tags[entries].count = samples_per_pixel;
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if (samples_per_pixel == 1) {
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tags[entries++].offset = bits_per_sample;
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@ -473,18 +462,18 @@ INTERNAL int tif_pixel_plot(struct zint_symbol *symbol, unsigned char *pixelbuf)
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}
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}
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tags[entries].tag = 0x0103; // Compression
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tags[entries].type = 3; // SHORT
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tags[entries].tag = 0x0103; /* Compression */
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tags[entries].type = 3; /* SHORT */
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tags[entries].count = 1;
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tags[entries++].offset = compression;
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tags[entries].tag = 0x0106; // PhotometricInterpretation
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tags[entries].type = 3; // SHORT
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tags[entries].tag = 0x0106; /* PhotometricInterpretation */
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tags[entries].type = 3; /* SHORT */
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tags[entries].count = 1;
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tags[entries++].offset = pmi;
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tags[entries].tag = 0x0111; // StripOffsets
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tags[entries].type = 4; // LONG
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tags[entries].tag = 0x0111; /* StripOffsets */
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tags[entries].type = 4; /* LONG */
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tags[entries].count = strip_count;
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if (strip_count == 1) {
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tags[entries++].offset = strip_offset[0];
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@ -495,19 +484,19 @@ INTERNAL int tif_pixel_plot(struct zint_symbol *symbol, unsigned char *pixelbuf)
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}
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if (samples_per_pixel > 1) {
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tags[entries].tag = 0x0115; // SamplesPerPixel
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tags[entries].type = 3; // SHORT
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tags[entries].tag = 0x0115; /* SamplesPerPixel */
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tags[entries].type = 3; /* SHORT */
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tags[entries].count = 1;
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tags[entries++].offset = samples_per_pixel;
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}
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tags[entries].tag = 0x0116; // RowsPerStrip
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tags[entries].type = 4; // LONG
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tags[entries].tag = 0x0116; /* RowsPerStrip */
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tags[entries].type = 4; /* LONG */
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tags[entries].count = 1;
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tags[entries++].offset = rows_per_strip;
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tags[entries].tag = 0x0117; // StripByteCounts
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tags[entries].type = 4; // LONG
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tags[entries].tag = 0x0117; /* StripByteCounts */
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tags[entries].type = 4; /* LONG */
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tags[entries].count = strip_count;
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if (strip_count == 1) {
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tags[entries++].offset = strip_bytes[0];
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@ -517,37 +506,37 @@ INTERNAL int tif_pixel_plot(struct zint_symbol *symbol, unsigned char *pixelbuf)
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free_memory += strip_count * 4;
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}
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tags[entries].tag = 0x011a; // XResolution
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tags[entries].type = 5; // RATIONAL
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tags[entries].tag = 0x011a; /* XResolution */
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tags[entries].type = 5; /* RATIONAL */
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tags[entries].count = 1;
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update_offsets[offsets++] = entries;
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tags[entries++].offset = free_memory;
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free_memory += 8;
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tags[entries].tag = 0x011b; // YResolution
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tags[entries].type = 5; // RATIONAL
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tags[entries].tag = 0x011b; /* YResolution */
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tags[entries].type = 5; /* RATIONAL */
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tags[entries].count = 1;
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update_offsets[offsets++] = entries;
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tags[entries++].offset = free_memory;
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free_memory += 8;
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tags[entries].tag = 0x0128; // ResolutionUnit
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tags[entries].type = 3; // SHORT
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tags[entries].tag = 0x0128; /* ResolutionUnit */
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tags[entries].type = 3; /* SHORT */
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tags[entries].count = 1;
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tags[entries++].offset = 2; // Inches
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tags[entries++].offset = 2; /* Inches */
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if (color_map_size) {
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tags[entries].tag = 0x0140; // ColorMap
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tags[entries].type = 3; // SHORT
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tags[entries].tag = 0x0140; /* ColorMap */
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tags[entries].type = 3; /* SHORT */
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tags[entries].count = color_map_size * 3;
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update_offsets[offsets++] = entries;
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tags[entries++].offset = free_memory;
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//free_memory += color_map_size * 3 * 2; /* Unnecessary as long as last use */
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/* free_memory += color_map_size * 3 * 2; Unnecessary as long as last use */
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}
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if (extra_samples) {
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tags[entries].tag = 0x0152; // ExtraSamples
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tags[entries].type = 3; // SHORT
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tags[entries].tag = 0x0152; /* ExtraSamples */
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tags[entries].type = 3; /* SHORT */
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tags[entries].count = 1;
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tags[entries++].offset = extra_samples;
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}
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@ -622,3 +611,5 @@ INTERNAL int tif_pixel_plot(struct zint_symbol *symbol, unsigned char *pixelbuf)
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return 0;
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}
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/* vim: set ts=4 sw=4 et : */
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