602 lines
14 KiB
C
602 lines
14 KiB
C
/*
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* t2p: Create a PDF file from the contents of one or more TIFF
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* bilevel image files. The images in the resulting PDF file
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* will be compressed using ITU-T T.6 (G4) fax encoding.
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*
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* Main program
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* $Id: tumble.c,v 1.22 2003/02/20 04:44:17 eric Exp $
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* Copyright 2001, 2002, 2003 Eric Smith <eric@brouhaha.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation. Note that permission is
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* not granted to redistribute this program under the terms of any
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* other version of the General Public License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA
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*/
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#include <stdarg.h>
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#include <stdbool.h>
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#include <stdint.h>
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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 <unistd.h>
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#include <tiffio.h>
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#define TIFF_REVERSE_BITS
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#include "bitblt.h"
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#include "semantics.h"
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#include "parser.tab.h"
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#include "t2p.h"
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#include "pdf.h"
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#define MAX_INPUT_FILES 5000
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#define POINTS_PER_INCH 72
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/* page size limited by Acrobat Reader to 45 inches on a side */
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#define PAGE_MAX_INCHES 45
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#define PAGE_MAX_POINTS (PAGE_MAX_INCHES * POINTS_PER_INCH)
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typedef struct output_file_t
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{
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struct output_file_t *next;
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char *name;
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pdf_file_handle pdf;
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} output_file_t;
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int verbose;
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char *in_filename;
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TIFF *in;
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output_file_t *output_files;
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output_file_t *out;
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char *progname;
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bool close_tiff_input_file (void);
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bool close_pdf_output_files (void);
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void usage (void)
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{
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fprintf (stderr, "\n");
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fprintf (stderr, "t2p - Copyright 2001-2003 Eric Smith <eric@brouhaha.com>\n");
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fprintf (stderr, "http://www.brouhaha.com/~eric/software/t2p/\n");
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fprintf (stderr, "\n");
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fprintf (stderr, "usage:\n");
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fprintf (stderr, " %s [options] -s spec\n", progname);
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fprintf (stderr, " %s [options] <input.tif>... -o <output.pdf>\n", progname);
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fprintf (stderr, "options:\n");
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fprintf (stderr, " -v verbose\n");
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fprintf (stderr, " -b fmt create bookmarks\n");
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fprintf (stderr, "bookmark format:\n");
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fprintf (stderr, " %%F file name\n");
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fprintf (stderr, " %%p page number\n");
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}
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/* generate fatal error message to stderr, doesn't return */
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void fatal (int ret, char *format, ...)
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{
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va_list ap;
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fprintf (stderr, "fatal error");
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if (format)
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{
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fprintf (stderr, ": ");
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va_start (ap, format);
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vfprintf (stderr, format, ap);
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va_end (ap);
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}
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else
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fprintf (stderr, "\n");
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if (ret == 1)
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usage ();
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close_tiff_input_file ();
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close_pdf_output_files ();
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exit (ret);
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}
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bool close_tiff_input_file (void)
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{
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if (in)
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{
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free (in_filename);
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TIFFClose (in);
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}
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in = NULL;
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in_filename = NULL;
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return (1);
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}
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bool open_tiff_input_file (char *name)
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{
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if (in)
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{
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if (strcmp (name, in_filename) == 0)
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return (1);
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close_tiff_input_file ();
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}
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in_filename = strdup (name);
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if (! in_filename)
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{
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fprintf (stderr, "can't strdup input filename '%s'\n", name);
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return (0);
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}
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in = TIFFOpen (name, "r");
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if (! in)
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{
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fprintf (stderr, "can't open input file '%s'\n", name);
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free (in_filename);
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return (0);
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}
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return (1);
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}
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bool close_pdf_output_files (void)
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{
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output_file_t *o, *n;
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for (o = output_files; o; o = n)
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{
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n = o->next;
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pdf_close (o->pdf);
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free (o->name);
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free (o);
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}
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out = NULL;
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output_files = NULL;
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return (1);
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}
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bool open_pdf_output_file (char *name,
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pdf_file_attributes_t *attributes)
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{
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output_file_t *o;
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if (out && (strcmp (name, out->name) == 0))
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return (1);
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for (o = output_files; o; o = o->next)
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if (strcmp (name, o->name) == 0)
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{
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out = o;
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return (1);
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}
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o = calloc (1, sizeof (output_file_t));
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if (! o)
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{
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fprintf (stderr, "can't calloc output file struct for '%s'\n", name);
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return (0);
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}
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o->name = strdup (name);
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if (! o->name)
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{
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fprintf (stderr, "can't strdup output filename '%s'\n", name);
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free (o);
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return (0);
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}
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o->pdf = pdf_create (name);
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if (! o->pdf)
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{
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fprintf (stderr, "can't open output file '%s'\n", name);
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free (o->name);
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free (o);
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return (0);
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}
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if (attributes->author)
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pdf_set_author (o->pdf, attributes->author);
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if (attributes->creator)
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pdf_set_creator (o->pdf, attributes->creator);
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if (attributes->title)
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pdf_set_title (o->pdf, attributes->title);
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if (attributes->subject)
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pdf_set_subject (o->pdf, attributes->subject);
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if (attributes->keywords)
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pdf_set_keywords (o->pdf, attributes->keywords);
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/* prepend new output file onto list */
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o->next = output_files;
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output_files = o;
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out = o;
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return (1);
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}
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void process_page_numbers (int page_index,
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int count,
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int base,
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page_label_t *page_label)
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{
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}
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/* frees original! */
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static Bitmap *resize_bitmap (Bitmap *src,
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float x_resolution,
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float y_resolution,
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input_attributes_t input_attributes)
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{
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Rect src_rect;
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Point dest_min;
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Bitmap *dest;
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int width_pixels = input_attributes.page_size.width * x_resolution;
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int height_pixels = input_attributes.page_size.height * y_resolution;
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src_rect.min.x = (rect_width (& src->rect) - width_pixels) / 2;
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src_rect.min.y = (rect_height (& src->rect) - height_pixels) / 2;
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src_rect.max.x = src_rect.min.x + width_pixels;
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src_rect.max.y = src_rect.min.y + height_pixels;
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dest_min.x = 0;
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dest_min.y = 0;
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dest = bitblt (src, & src_rect, NULL, & dest_min, TF_SRC, 0);
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free_bitmap (src);
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return (dest);
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}
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/* "in place" rotation */
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static void rotate_bitmap (Bitmap *src,
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input_attributes_t input_attributes)
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{
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switch (input_attributes.rotation)
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{
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case 0: break;
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case 90: rot_90 (src); break;
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case 180: rot_180 (src); break;
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case 270: rot_270 (src); break;
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default:
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fprintf (stderr, "rotation must be 0, 90, 180, or 270\n");
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}
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}
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#define SWAP(type,a,b) do { type temp; temp = a; a = b; b = temp; } while (0)
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bool last_tiff_page (void)
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{
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return (TIFFLastDirectory (in));
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}
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bool process_page (int image, /* range 1 .. n */
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input_attributes_t input_attributes,
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bookmark_t *bookmarks)
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{
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int result = 0;
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uint32_t image_length, image_width;
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uint32_t dest_image_length, dest_image_width;
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#ifdef CHECK_DEPTH
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uint32_t image_depth;
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#endif
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uint16_t samples_per_pixel;
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uint16_t bits_per_sample;
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uint16_t planar_config;
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uint16_t resolution_unit;
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float x_resolution, y_resolution;
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float dest_x_resolution, dest_y_resolution;
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double width_points, height_points; /* really 1/72 inch units rather than
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points */
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Rect rect;
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Bitmap *bitmap;
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int row;
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pdf_page_handle page;
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if (! TIFFSetDirectory (in, image - 1))
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{
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fprintf (stderr, "can't find page %d of input file\n", image);
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goto fail;
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}
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if (1 != TIFFGetField (in, TIFFTAG_IMAGELENGTH, & image_length))
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{
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fprintf (stderr, "can't get image length\n");
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goto fail;
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}
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if (1 != TIFFGetField (in, TIFFTAG_IMAGEWIDTH, & image_width))
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{
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fprintf (stderr, "can't get image width\n");
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goto fail;
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}
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if (1 != TIFFGetField (in, TIFFTAG_SAMPLESPERPIXEL, & samples_per_pixel))
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{
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fprintf (stderr, "can't get samples per pixel\n");
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goto fail;
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}
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#ifdef CHECK_DEPTH
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if (1 != TIFFGetField (in, TIFFTAG_IMAGEDEPTH, & image_depth))
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{
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fprintf (stderr, "can't get image depth\n");
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goto fail;
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}
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#endif
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if (1 != TIFFGetField (in, TIFFTAG_BITSPERSAMPLE, & bits_per_sample))
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{
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fprintf (stderr, "can't get bits per sample\n");
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goto fail;
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}
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if (1 != TIFFGetField (in, TIFFTAG_PLANARCONFIG, & planar_config))
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planar_config = 1;
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if (1 != TIFFGetField (in, TIFFTAG_RESOLUTIONUNIT, & resolution_unit))
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resolution_unit = 2;
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if (1 != TIFFGetField (in, TIFFTAG_XRESOLUTION, & x_resolution))
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x_resolution = 300;
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if (1 != TIFFGetField (in, TIFFTAG_YRESOLUTION, & y_resolution))
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y_resolution = 300;
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if (samples_per_pixel != 1)
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{
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fprintf (stderr, "samples per pixel %u, must be 1\n", samples_per_pixel);
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goto fail;
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}
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#ifdef CHECK_DEPTH
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if (image_depth != 1)
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{
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fprintf (stderr, "image depth %u, must be 1\n", image_depth);
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goto fail;
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}
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#endif
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if (bits_per_sample != 1)
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{
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fprintf (stderr, "bits per sample %u, must be 1\n", bits_per_sample);
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goto fail;
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}
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if (planar_config != 1)
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{
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fprintf (stderr, "planar config %u, must be 1\n", planar_config);
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goto fail;
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}
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if (input_attributes.has_resolution)
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{
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x_resolution = input_attributes.x_resolution;
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y_resolution = input_attributes.y_resolution;
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}
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if ((input_attributes.rotation == 90) || (input_attributes.rotation == 270))
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{
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dest_image_width = image_length;
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dest_image_length = image_width;
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dest_x_resolution = y_resolution;
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dest_y_resolution = x_resolution;
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SWAP (double, width_points, height_points); /* $$$ not yet set!!! */
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}
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else
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{
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dest_image_width = image_width;
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dest_image_length = image_length;
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dest_x_resolution = x_resolution;
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dest_y_resolution = y_resolution;
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}
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rect.min.x = 0;
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rect.min.y = 0;
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rect.max.x = image_width;
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rect.max.y = image_length;
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bitmap = create_bitmap (& rect);
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if (! bitmap)
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{
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fprintf (stderr, "can't allocate bitmap\n");
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goto fail;
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}
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for (row = 0; row < image_length; row++)
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if (1 != TIFFReadScanline (in,
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bitmap->bits + row * bitmap->row_words,
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row,
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0))
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{
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fprintf (stderr, "can't read TIFF scanline\n");
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goto fail;
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}
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#ifdef TIFF_REVERSE_BITS
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reverse_bits ((uint8_t *) bitmap->bits,
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image_length * bitmap->row_words * sizeof (word_type));
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#endif /* TIFF_REVERSE_BITS */
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if (input_attributes.has_page_size)
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bitmap = resize_bitmap (bitmap,
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x_resolution,
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y_resolution,
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input_attributes);
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rotate_bitmap (bitmap,
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input_attributes);
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#ifdef TIFF_REVERSE_BITS
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reverse_bits ((uint8_t *) bitmap->bits,
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image_length * bitmap->row_words * sizeof (word_type));
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#endif /* TIFF_REVERSE_BITS */
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width_points = (rect_width (& bitmap->rect) / dest_x_resolution) * POINTS_PER_INCH;
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height_points = (rect_height (& bitmap->rect) / dest_y_resolution) * POINTS_PER_INCH;
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if ((height_points > PAGE_MAX_POINTS) || (width_points > PAGE_MAX_POINTS))
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{
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fprintf (stdout, "image too large (max %d inches on a side\n", PAGE_MAX_INCHES);
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goto fail;
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}
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page = pdf_new_page (out->pdf, width_points, height_points);
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pdf_write_g4_fax_image (page,
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bitmap,
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0, /* ImageMask */
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0); /* BlackIs1 */
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free_bitmap (bitmap);
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result = 1;
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fail:
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return (result);
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}
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void main_args (char *out_fn, int inf_count, char **in_fn)
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{
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int i, ip;
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input_attributes_t input_attributes;
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pdf_file_attributes_t output_attributes;
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memset (& input_attributes, 0, sizeof (input_attributes));
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memset (& output_attributes, 0, sizeof (output_attributes));
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if (! open_pdf_output_file (out_fn, & output_attributes))
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fatal (3, "error opening output file \"%s\"\n", out_fn);
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for (i = 0; i < inf_count; i++)
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{
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if (! open_tiff_input_file (in_fn [i]))
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fatal (3, "error opening input file \"%s\"\n", in_fn [i]);
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for (ip = 1;; ip++)
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{
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fprintf (stderr, "processing page %d of file \"%s\"\r", ip, in_fn [i]);
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if (! process_page (ip, input_attributes, NULL))
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fatal (3, "error processing page %d of input file \"%s\"\n", ip, in_fn [i]);
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if (last_tiff_page ())
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break;
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}
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if (verbose)
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fprintf (stderr, "processed %d pages of input file \"%s\"\n", ip, in_fn [i]);
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if (! close_tiff_input_file ())
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fatal (3, "error closing input file \"%s\"\n", in_fn [i]);
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}
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if (! close_pdf_output_files ())
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fatal (3, "error closing output file \"%s\"\n", out_fn);
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}
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void main_spec (char *spec_fn)
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{
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if (! parse_spec_file (spec_fn))
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fatal (2, "error parsing spec file\n");
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if (! process_specs ())
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fatal (3, "error processing spec file\n");
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}
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int main (int argc, char *argv[])
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{
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char *spec_fn = NULL;
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char *out_fn = NULL;
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char *bookmark_fmt = NULL;
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int inf_count = 0;
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char *in_fn [MAX_INPUT_FILES];
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progname = argv [0];
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pdf_init ();
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while (--argc)
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{
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if (argv [1][0] == '-')
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{
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if (strcmp (argv [1], "-v") == 0)
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verbose++;
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else if (strcmp (argv [1], "-o") == 0)
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{
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if (argc)
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{
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argc--;
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argv++;
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out_fn = argv [1];
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}
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else
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fatal (1, "missing filename after \"-o\" option\n");
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}
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else if (strcmp (argv [1], "-s") == 0)
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{
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if (argc)
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{
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argc--;
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argv++;
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spec_fn = argv [1];
|
|
}
|
|
else
|
|
fatal (1, "missing filename after \"-s\" option\n");
|
|
}
|
|
else if (strcmp (argv [1], "-b") == 0)
|
|
{
|
|
if (argc)
|
|
{
|
|
argc--;
|
|
argv++;
|
|
bookmark_fmt = argv [1];
|
|
}
|
|
else
|
|
fatal (1, "missing format string after \"-b\" option\n");
|
|
}
|
|
else
|
|
fatal (1, "unrecognized option \"%s\"\n", argv [1]);
|
|
}
|
|
else if (inf_count < MAX_INPUT_FILES)
|
|
in_fn [inf_count++] = argv [1];
|
|
else
|
|
fatal (1, "exceeded maximum of %d input files\n", MAX_INPUT_FILES);
|
|
argv++;
|
|
}
|
|
|
|
if (! ((! out_fn) ^ (! spec_fn)))
|
|
fatal (1, "either a spec file or an output file (but not both) must be specified\n");
|
|
|
|
if (out_fn && ! inf_count)
|
|
fatal (1, "no input files specified\n");
|
|
|
|
if (spec_fn && inf_count)
|
|
fatal (1, "if spec file is provided, input files can't be specified as arguments\n");
|
|
|
|
if (spec_fn)
|
|
main_spec (spec_fn);
|
|
else
|
|
main_args (out_fn, inf_count, in_fn);
|
|
|
|
close_tiff_input_file ();
|
|
close_pdf_output_files ();
|
|
exit (0);
|
|
}
|