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brouhaha.tumble/t2p.c
Eric Smith ba957441fb bug fixes.
2002-01-02 10:18:13 +00:00

513 lines
12 KiB
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/*
* tiff2pdf: Create a PDF file from the contents of one or more
* TIFF bilevel image files. The images in the resulting
* PDF file will be compressed using ITU-T T.6 (G4) fax
* encoding.
*
* Main program
* $Id: t2p.c,v 1.13 2002/01/02 02:18:13 eric Exp $
* Copyright 2001 Eric Smith <eric@brouhaha.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation. Note that permission is
* not granted to redistribute this program under the terms of any
* other version of the General Public License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <tiffio.h>
#include <panda/functions.h>
#include <panda/constants.h>
#include "type.h"
#include "bitblt.h"
#include "semantics.h"
#include "parser.tab.h"
#include "tiff2pdf.h"
#define POINTS_PER_INCH 72
/* page size limited by Acrobat Reader to 45 inches on a side */
#define PAGE_MAX_INCHES 45
#define PAGE_MAX_POINTS (PAGE_MAX_INCHES * POINTS_PER_INCH)
typedef struct output_file_t
{
struct output_file_t *next;
char *name;
panda_pdf *pdf;
} output_file_t;
char *in_filename;
TIFF *in;
output_file_t *output_files;
output_file_t *out;
/* panda_pdf *out; */
boolean close_tiff_input_file (void)
{
if (in)
{
free (in_filename);
TIFFClose (in);
}
in = NULL;
in_filename = NULL;
return (1);
}
boolean open_tiff_input_file (char *name)
{
if (in)
{
if (strcmp (name, in_filename) == 0)
return (1);
close_tiff_input_file ();
}
in_filename = strdup (name);
if (! in_filename)
{
fprintf (stderr, "can't strdup input filename '%s'\n", name);
return (0);
}
in = TIFFOpen (name, "r");
if (! in)
{
fprintf (stderr, "can't open input file '%s'\n", name);
free (in_filename);
return (0);
}
return (1);
}
boolean close_pdf_output_files (void)
{
output_file_t *o, *n;
for (o = output_files; o; o = n)
{
n = o->next;
panda_close (o->pdf);
free (o->name);
free (o);
}
out = NULL;
output_files = NULL;
return (1);
}
boolean open_pdf_output_file (char *name,
pdf_file_attributes_t *attributes)
{
output_file_t *o;
if (out && (strcmp (name, out->name) == 0))
return (1);
for (o = output_files; o; o = o->next)
if (strcmp (name, o->name) == 0)
{
out = o;
return (1);
}
o = calloc (1, sizeof (output_file_t));
if (! o)
{
fprintf (stderr, "can't calloc output file struct for '%s'\n", name);
return (0);
}
o->name = strdup (name);
if (! o->name)
{
fprintf (stderr, "can't strdup output filename '%s'\n", name);
free (o);
return (0);
}
o->pdf = panda_open (name, "w");
if (! o->pdf)
{
fprintf (stderr, "can't open output file '%s'\n", name);
free (o->name);
free (o);
return (0);
}
if (attributes->author)
panda_setauthor (o->pdf, attributes->author);
if (attributes->creator)
panda_setcreator (o->pdf, attributes->creator);
if (attributes->title)
panda_settitle (o->pdf, attributes->title);
if (attributes->subject)
panda_setsubject (o->pdf, attributes->subject);
if (attributes->keywords)
panda_setkeywords (o->pdf, attributes->keywords);
/* prepend new output file onto list */
o->next = output_files;
output_files = o;
out = o;
return (1);
}
void process_page_numbers (int page_index,
int count,
int base,
page_label_t *page_label)
{
}
static Bitmap *rotate_bitmap (Bitmap *src,
float x_resolution,
float y_resolution,
input_attributes_t input_attributes)
{
Rect src_rect;
Point dest_upper_left;
int scan;
if (input_attributes.has_page_size)
{
int width_pixels = input_attributes.page_size.width * x_resolution;
int height_pixels = input_attributes.page_size.height * y_resolution;
src_rect.upper_left.x = (src->width - width_pixels) / 2;
src_rect.upper_left.y = (src->height - height_pixels) / 2;
src_rect.lower_right.x = src_rect.upper_left.x + width_pixels;
src_rect.lower_right.y = src_rect.upper_left.y + height_pixels;
}
else
{
src_rect.upper_left.x = 0;
src_rect.upper_left.y = 0;
src_rect.lower_right.x = src->width;
src_rect.lower_right.y = src->height;
}
dest_upper_left.x = 0;
dest_upper_left.y = 0;
switch (input_attributes.rotation)
{
case 0: scan = ROT_0; break;
case 90: scan = ROT_90; break;
case 180: scan = ROT_180; break;
case 270: scan = ROT_270; break;
default:
fprintf (stderr, "rotation must be 0, 90, 180, or 270\n");
return (NULL);
}
return (bitblt (src,
src_rect,
NULL, /* dest_bitmap */
dest_upper_left,
scan,
TF_SRC));
}
#define SWAP(type,a,b) do { type temp; temp = a; a = b; b = temp; } while (0)
boolean process_page (int image, /* range 1 .. n */
input_attributes_t input_attributes,
bookmark_t *bookmarks)
{
int result = 0;
u32 image_length, image_width;
u32 dest_image_length, dest_image_width;
#ifdef CHECK_DEPTH
u32 image_depth;
#endif
u16 samples_per_pixel;
u16 bits_per_sample;
u16 planar_config;
u16 resolution_unit;
float x_resolution, y_resolution;
float dest_x_resolution, dest_y_resolution;
int scanline_size;
int width_points, height_points; /* really 1/72 inch units rather than
points */
Bitmap *src_bitmap;
Bitmap *dest_bitmap;
int row;
panda_page *page;
int tiff_temp_fd;
char tiff_temp_fn [] = "/var/tmp/tiff2pdf-XXXXXX\0";
TIFF *tiff_temp;
char pagesize [26]; /* Needs to hold two ints of four characters (0..3420),
two zeros, three spaces, two brackets, and a NULL.
Added an extra ten characters just in case. */
if (! TIFFSetDirectory (in, image - 1))
{
fprintf (stderr, "can't find page %d of input file\n", image);
goto fail;
}
if (1 != TIFFGetField (in, TIFFTAG_IMAGELENGTH, & image_length))
{
fprintf (stderr, "can't get image length\n");
goto fail;
}
if (1 != TIFFGetField (in, TIFFTAG_IMAGEWIDTH, & image_width))
{
fprintf (stderr, "can't get image width\n");
goto fail;
}
if (1 != TIFFGetField (in, TIFFTAG_SAMPLESPERPIXEL, & samples_per_pixel))
{
fprintf (stderr, "can't get samples per pixel\n");
goto fail;
}
#ifdef CHECK_DEPTH
if (1 != TIFFGetField (in, TIFFTAG_IMAGEDEPTH, & image_depth))
{
fprintf (stderr, "can't get image depth\n");
goto fail;
}
#endif
if (1 != TIFFGetField (in, TIFFTAG_BITSPERSAMPLE, & bits_per_sample))
{
fprintf (stderr, "can't get bits per sample\n");
goto fail;
}
if (1 != TIFFGetField (in, TIFFTAG_PLANARCONFIG, & planar_config))
planar_config = 1;
if (1 != TIFFGetField (in, TIFFTAG_RESOLUTIONUNIT, & resolution_unit))
resolution_unit = 2;
if (1 != TIFFGetField (in, TIFFTAG_XRESOLUTION, & x_resolution))
x_resolution = 300;
if (1 != TIFFGetField (in, TIFFTAG_YRESOLUTION, & y_resolution))
y_resolution = 300;
if (samples_per_pixel != 1)
{
fprintf (stderr, "samples per pixel %u, must be 1\n", samples_per_pixel);
goto fail;
}
#ifdef CHECK_DEPTH
if (image_depth != 1)
{
fprintf (stderr, "image depth %u, must be 1\n", image_depth);
goto fail;
}
#endif
if (bits_per_sample != 1)
{
fprintf (stderr, "bits per sample %u, must be 1\n", bits_per_sample);
goto fail;
}
if (planar_config != 1)
{
fprintf (stderr, "planar config %u, must be 1\n", planar_config);
goto fail;
}
if (input_attributes.has_resolution)
{
x_resolution = input_attributes.x_resolution;
y_resolution = input_attributes.y_resolution;
}
if ((input_attributes.rotation == 90) || (input_attributes.rotation == 270))
{
dest_image_width = image_length;
dest_image_length = image_width;
dest_x_resolution = y_resolution;
dest_y_resolution = x_resolution;
SWAP (int, width_points, height_points);
}
else
{
dest_image_width = image_width;
dest_image_length = image_length;
dest_x_resolution = x_resolution;
dest_y_resolution = y_resolution;
}
scanline_size = TIFFScanlineSize (in);
src_bitmap = create_bitmap (image_width, image_length);
if (! src_bitmap)
{
fprintf (stderr, "can't allocate bitmap\n");
goto fail;
}
if (src_bitmap->rowbytes != scanline_size)
{
printf ("image_width %d\n", image_width);
printf ("rowbytes %d\n", src_bitmap->rowbytes);
printf ("TIFFScanlineSize %d\n", scanline_size);
}
for (row = 0; row < image_length; row++)
TIFFReadScanline (in,
src_bitmap->bits + row * src_bitmap->rowbytes,
row,
0);
for (row = 0; row < dest_image_length; row++)
if (1 != TIFFReadScanline (in,
src_bitmap->bits + row * src_bitmap->rowbytes,
row,
0))
{
fprintf (stderr, "can't read TIFF scanline\n");
goto fail;
}
dest_bitmap = rotate_bitmap (src_bitmap,
x_resolution,
y_resolution,
input_attributes);
if (! dest_bitmap)
{
fprintf (stderr, "can't allocate bitmap\n");
goto fail;
}
tiff_temp_fd = mkstemp (tiff_temp_fn);
if (tiff_temp_fd < 0)
{
fprintf (stderr, "can't create temporary TIFF file\n");
goto fail;
}
tiff_temp = TIFFFdOpen (tiff_temp_fd, tiff_temp_fn, "w");
if (! out)
{
fprintf (stderr, "can't open temporary TIFF file '%s'\n", tiff_temp_fn);
goto fail;
}
TIFFSetField (tiff_temp, TIFFTAG_IMAGELENGTH, dest_bitmap->height);
TIFFSetField (tiff_temp, TIFFTAG_IMAGEWIDTH, dest_bitmap->width);
TIFFSetField (tiff_temp, TIFFTAG_PLANARCONFIG, planar_config);
TIFFSetField (tiff_temp, TIFFTAG_ROWSPERSTRIP, dest_bitmap->height);
TIFFSetField (tiff_temp, TIFFTAG_RESOLUTIONUNIT, resolution_unit);
TIFFSetField (tiff_temp, TIFFTAG_XRESOLUTION, dest_x_resolution);
TIFFSetField (tiff_temp, TIFFTAG_YRESOLUTION, dest_y_resolution);
TIFFSetField (tiff_temp, TIFFTAG_SAMPLESPERPIXEL, samples_per_pixel);
TIFFSetField (tiff_temp, TIFFTAG_BITSPERSAMPLE, bits_per_sample);
TIFFSetField (tiff_temp, TIFFTAG_COMPRESSION, COMPRESSION_CCITTFAX4);
TIFFSetField (tiff_temp, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISWHITE);
for (row = 0; row < dest_bitmap->height; row++)
if (1 != TIFFWriteScanline (tiff_temp,
dest_bitmap->bits + row * dest_bitmap->rowbytes,
row,
0))
{
fprintf (stderr, "can't write TIFF scanline\n");
goto fail;
}
TIFFClose (tiff_temp);
width_points = (dest_bitmap->width / dest_x_resolution) * POINTS_PER_INCH;
height_points = (dest_bitmap->height / dest_y_resolution) * POINTS_PER_INCH;
free_bitmap (dest_bitmap);
free_bitmap (src_bitmap);
if ((height_points > PAGE_MAX_POINTS) || (width_points > PAGE_MAX_POINTS))
{
fprintf (stdout, "image too large (max %d inches on a side\n", PAGE_MAX_INCHES);
goto fail;
}
sprintf (pagesize, "[0 0 %d %d]", width_points, height_points);
page = panda_newpage (out->pdf, pagesize);
panda_imagebox (out->pdf,
page,
0, /* top */
0, /* left */
height_points, /* bottom */
width_points, /* right */
tiff_temp_fn,
panda_image_tiff);
result = 1;
fail:
if (tiff_temp_fd)
unlink (tiff_temp_fn);
return (result);
}
int main (int argc, char *argv[])
{
int result = 0;
panda_init ();
if (argc != 2)
{
fprintf (stderr, "usage: %s spec\n", argv [0]);
result = 1;
goto fail;
}
if (! parse_spec_file (argv [1]))
{
result = 2;
goto fail;
}
if (! process_specs ())
{
result = 3;
goto fail;
}
fail:
close_tiff_input_file ();
close_pdf_output_files ();
return (result);
}
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