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gimp/plug-ins/common/file-tiff-save.c

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/* tiff saving for GIMP
* -Peter Mattis
*
* The TIFF loading code has been completely revamped by Nick Lamb
* njl195@zepler.org.uk -- 18 May 1998
* And it now gains support for tiles (and doubtless a zillion bugs)
* njl195@zepler.org.uk -- 12 June 1999
* LZW patent fuss continues :(
* njl195@zepler.org.uk -- 20 April 2000
* The code for this filter is based on "tifftopnm" and "pnmtotiff",
* 2 programs that are a part of the netpbm package.
* khk@khk.net -- 13 May 2000
* Added support for ICCPROFILE tiff tag. If this tag is present in a
* TIFF file, then a parasite is created and vice versa.
* peter@kirchgessner.net -- 29 Oct 2002
* Progress bar only when run interactive
* Added support for layer offsets - pablo.dangelo@web.de -- 7 Jan 2004
* Honor EXTRASAMPLES tag while loading images with alphachannel
* pablo.dangelo@web.de -- 16 Jan 2004
*/
/*
* tifftopnm.c - converts a Tagged Image File to a portable anymap
*
* Derived by Jef Poskanzer from tif2ras.c, which is:
*
* Copyright (c) 1990 by Sun Microsystems, Inc.
*
* Author: Patrick J. Naughton
* naughton@wind.sun.com
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose and without fee is hereby granted,
* provided that the above copyright notice appear in all copies and that
* both that copyright notice and this permission notice appear in
* supporting documentation.
*
* This file is provided AS IS with no warranties of any kind. The author
* shall have no liability with respect to the infringement of copyrights,
* trade secrets or any patents by this file or any part thereof. In no
* event will the author be liable for any lost revenue or profits or
* other special, indirect and consequential damages.
*/
#include "config.h"
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <fcntl.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <glib/gstdio.h>
#ifdef G_OS_WIN32
#include <libgimpbase/gimpwin32-io.h>
#endif
#ifndef _O_BINARY
#define _O_BINARY 0
#endif
#include <tiffio.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
#define SAVE_PROC "file-tiff-save"
#define SAVE2_PROC "file-tiff-save2"
#define PLUG_IN_BINARY "file-tiff-save"
typedef struct
{
gint compression;
gint fillorder;
gboolean save_transp_pixels;
} TiffSaveVals;
typedef struct
{
gint32 ID;
GimpDrawable *drawable;
GimpPixelRgn pixel_rgn;
guchar *pixels;
guchar *pixel;
} channel_data;
/* Declare some local functions.
*/
static void query (void);
static void run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static gboolean image_is_monochrome (gint32 image);
static gboolean save_paths (TIFF *tif,
gint32 image);
static gboolean save_image (const gchar *filename,
gint32 image,
gint32 drawable,
gint32 orig_image,
GError **error);
static gboolean save_dialog (gboolean has_alpha,
gboolean is_monochrome);
static void comment_entry_callback (GtkWidget *widget,
gpointer data);
static void byte2bit (const guchar *byteline,
gint width,
guchar *bitline,
gboolean invert);
static void tiff_warning (const gchar *module,
const gchar *fmt,
va_list ap);
static void tiff_error (const gchar *module,
const gchar *fmt,
va_list ap);
const GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
static TiffSaveVals tsvals =
{
COMPRESSION_NONE, /* compression */
TRUE, /* alpha handling */
};
static gchar *image_comment = NULL;
static GimpRunMode run_mode = GIMP_RUN_INTERACTIVE;
MAIN ()
static void
query (void)
{
#define COMMON_SAVE_ARGS \
{ GIMP_PDB_INT32, "run-mode", "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }" },\
{ GIMP_PDB_IMAGE, "image", "Input image" },\
{ GIMP_PDB_DRAWABLE, "drawable", "Drawable to save" },\
{ GIMP_PDB_STRING, "filename", "The name of the file to save the image in" },\
{ GIMP_PDB_STRING, "raw-filename", "The name of the file to save the image in" },\
{ GIMP_PDB_INT32, "compression", "Compression type: { NONE (0), LZW (1), PACKBITS (2), DEFLATE (3), JPEG (4), CCITT G3 Fax (5), CCITT G4 Fax (6) }" }
static const GimpParamDef save_args_old[] =
{
COMMON_SAVE_ARGS
};
static const GimpParamDef save_args[] =
{
COMMON_SAVE_ARGS,
{ GIMP_PDB_INT32, "save-transp-pixels", "Keep the color data masked by an alpha channel intact" }
};
gimp_install_procedure (SAVE_PROC,
"saves files in the tiff file format",
"Saves files in the Tagged Image File Format. "
"The value for the saved comment is taken "
"from the 'gimp-comment' parasite.",
"Spencer Kimball & Peter Mattis",
"Spencer Kimball & Peter Mattis",
"1995-1996,2000-2003",
N_("TIFF image"),
"RGB*, GRAY*, INDEXED",
GIMP_PLUGIN,
G_N_ELEMENTS (save_args_old), 0,
save_args_old, NULL);
gimp_register_file_handler_mime (SAVE_PROC, "image/tiff");
gimp_register_save_handler (SAVE_PROC, "tif,tiff", "");
gimp_install_procedure (SAVE2_PROC,
"saves files in the tiff file format",
"Saves files in the Tagged Image File Format. "
"The value for the saved comment is taken "
"from the 'gimp-comment' parasite.",
"Spencer Kimball & Peter Mattis",
"Spencer Kimball & Peter Mattis",
"1995-1996,2000-2003",
N_("TIFF image"),
"RGB*, GRAY*, INDEXED",
GIMP_PLUGIN,
G_N_ELEMENTS (save_args), 0,
save_args, NULL);
gimp_register_file_handler_mime (SAVE2_PROC, "image/tiff");
}
static void
run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[2];
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
GimpParasite *parasite;
gint32 image;
gint32 drawable;
gint32 orig_image;
GimpExportReturn export = GIMP_EXPORT_CANCEL;
GError *error = NULL;
run_mode = param[0].data.d_int32;
INIT_I18N ();
*nreturn_vals = 1;
*return_vals = values;
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = GIMP_PDB_EXECUTION_ERROR;
TIFFSetWarningHandler (tiff_warning);
TIFFSetErrorHandler (tiff_error);
if ((strcmp (name, SAVE_PROC) == 0) ||
(strcmp (name, SAVE2_PROC) == 0))
{
/* Plug-in is either file_tiff_save or file_tiff_save2 */
image = orig_image = param[1].data.d_int32;
drawable = param[2].data.d_int32;
/* Do this right this time, if POSSIBLE query for parasites, otherwise
or if there isn't one, choose the default comment from the gimprc. */
/* eventually export the image */
switch (run_mode)
{
case GIMP_RUN_INTERACTIVE:
case GIMP_RUN_WITH_LAST_VALS:
gimp_ui_init (PLUG_IN_BINARY, FALSE);
export = gimp_export_image (&image, &drawable, NULL,
(GIMP_EXPORT_CAN_HANDLE_RGB |
GIMP_EXPORT_CAN_HANDLE_GRAY |
GIMP_EXPORT_CAN_HANDLE_INDEXED |
GIMP_EXPORT_CAN_HANDLE_ALPHA ));
if (export == GIMP_EXPORT_CANCEL)
{
values[0].data.d_status = GIMP_PDB_CANCEL;
return;
}
break;
default:
break;
}
parasite = gimp_image_parasite_find (orig_image, "gimp-comment");
if (parasite)
{
image_comment = g_strndup (gimp_parasite_data (parasite),
gimp_parasite_data_size (parasite));
gimp_parasite_free (parasite);
}
switch (run_mode)
{
case GIMP_RUN_INTERACTIVE:
/* Possibly retrieve data */
gimp_get_data (SAVE_PROC, &tsvals);
parasite = gimp_image_parasite_find (orig_image, "tiff-save-options");
if (parasite)
{
const TiffSaveVals *pvals = gimp_parasite_data (parasite);
tsvals.compression = pvals->compression;
tsvals.save_transp_pixels = pvals->save_transp_pixels;
}
gimp_parasite_free (parasite);
/* First acquire information with a dialog */
if (! save_dialog (gimp_drawable_has_alpha (drawable),
image_is_monochrome (image)))
status = GIMP_PDB_CANCEL;
break;
case GIMP_RUN_NONINTERACTIVE:
/* Make sure all the arguments are there! */
if (nparams == 6 || nparams == 7)
{
switch (param[5].data.d_int32)
{
case 0: tsvals.compression = COMPRESSION_NONE; break;
case 1: tsvals.compression = COMPRESSION_LZW; break;
case 2: tsvals.compression = COMPRESSION_PACKBITS; break;
case 3: tsvals.compression = COMPRESSION_DEFLATE; break;
case 4: tsvals.compression = COMPRESSION_JPEG; break;
case 5: tsvals.compression = COMPRESSION_CCITTFAX3; break;
case 6: tsvals.compression = COMPRESSION_CCITTFAX4; break;
default: status = GIMP_PDB_CALLING_ERROR; break;
}
if (nparams == 7)
tsvals.save_transp_pixels = param[6].data.d_int32;
else
tsvals.save_transp_pixels = TRUE;
}
else
{
status = GIMP_PDB_CALLING_ERROR;
}
break;
case GIMP_RUN_WITH_LAST_VALS:
/* Possibly retrieve data */
gimp_get_data (SAVE_PROC, &tsvals);
parasite = gimp_image_parasite_find (orig_image, "tiff-save-options");
if (parasite)
{
const TiffSaveVals *pvals = gimp_parasite_data (parasite);
tsvals.compression = pvals->compression;
tsvals.save_transp_pixels = pvals->save_transp_pixels;
}
gimp_parasite_free (parasite);
break;
default:
break;
}
if (status == GIMP_PDB_SUCCESS)
{
if (save_image (param[3].data.d_string, image, drawable, orig_image,
&error))
{
/* Store mvals data */
gimp_set_data (SAVE_PROC, &tsvals, sizeof (TiffSaveVals));
}
else
{
status = GIMP_PDB_EXECUTION_ERROR;
}
}
if (export == GIMP_EXPORT_EXPORT)
gimp_image_delete (image);
}
else
{
status = GIMP_PDB_CALLING_ERROR;
}
if (status != GIMP_PDB_SUCCESS && error)
{
*nreturn_vals = 2;
values[1].type = GIMP_PDB_STRING;
values[1].data.d_string = error->message;
}
values[0].data.d_status = status;
}
static void
tiff_warning (const gchar *module,
const gchar *fmt,
va_list ap)
{
va_list ap_test;
/* Workaround for: http://bugzilla.gnome.org/show_bug.cgi?id=131975 */
/* Ignore the warnings about unregistered private tags (>= 32768) */
if (! strcmp (fmt, "%s: unknown field with tag %d (0x%x) encountered"))
{
G_VA_COPY (ap_test, ap);
if (va_arg (ap_test, char *)); /* ignore first argument */
if (va_arg (ap_test, int) >= 32768)
return;
}
/* for older versions of libtiff? */
else if (! strcmp (fmt, "unknown field with tag %d (0x%x) ignored"))
{
G_VA_COPY (ap_test, ap);
if (va_arg (ap_test, int) >= 32768)
return;
}
g_logv (G_LOG_DOMAIN, G_LOG_LEVEL_MESSAGE, fmt, ap);
}
static void
tiff_error (const gchar *module,
const gchar *fmt,
va_list ap)
{
/* Workaround for: http://bugzilla.gnome.org/show_bug.cgi?id=132297 */
/* Ignore the errors related to random access and JPEG compression */
if (! strcmp (fmt, "Compression algorithm does not support random access"))
return;
g_logv (G_LOG_DOMAIN, G_LOG_LEVEL_MESSAGE, fmt, ap);
}
static gboolean
image_is_monochrome (gint32 image)
{
guchar *colors;
gint num_colors;
gboolean monochrome = FALSE;
g_return_val_if_fail (image != -1, FALSE);
colors = gimp_image_get_colormap (image, &num_colors);
if (colors)
{
if (num_colors == 2 || num_colors == 1)
{
const guchar bw_map[] = { 0, 0, 0, 255, 255, 255 };
const guchar wb_map[] = { 255, 255, 255, 0, 0, 0 };
if (memcmp (colors, bw_map, 3 * num_colors) == 0 ||
memcmp (colors, wb_map, 3 * num_colors) == 0)
{
monochrome = TRUE;
}
}
g_free (colors);
}
return monochrome;
}
static void
double_to_psd_fixed (gdouble value, gchar *target)
{
gdouble in, frac;
gint i, f;
frac = modf (value, &in);
if (frac < 0)
{
in -= 1;
frac += 1;
}
i = (gint) CLAMP (in, -16, 15);
f = CLAMP ((gint) (frac * 0xFFFFFF), 0, 0xFFFFFF);
target[0] = i & 0xFF;
target[1] = (f >> 16) & 0xFF;
target[2] = (f >> 8) & 0xFF;
target[3] = f & 0xFF;
}
static gboolean
save_paths (TIFF *tif,
gint32 image)
{
gint id = 2000; /* Photoshop paths have IDs >= 2000 */
gint num_vectors, *vectors, v;
gint num_strokes, *strokes, s;
gdouble width, height;
GString *ps_tag;
width = gimp_image_width (image);
height = gimp_image_height (image);
vectors = gimp_image_get_vectors (image, &num_vectors);
if (num_vectors <= 0)
return FALSE;
ps_tag = g_string_new ("");
/* Only up to 1000 paths supported */
for (v = 0; v < MIN (num_vectors, 1000); v++)
{
GString *data;
gchar *name, *nameend;
gsize len;
gint lenpos;
gchar pointrecord[26] = { 0, };
gchar *tmpname;
GError *err = NULL;
data = g_string_new ("8BIM");
g_string_append_c (data, id / 256);
g_string_append_c (data, id % 256);
/*
* - use iso8859-1 if possible
* - otherwise use UTF-8, prepended with \xef\xbb\xbf (Byte-Order-Mark)
*/
name = gimp_vectors_get_name (vectors[v]);
tmpname = g_convert (name, -1, "iso8859-1", "utf-8", NULL, &len, &err);
if (tmpname && err == NULL)
{
g_string_append_c (data, MIN (len, 255));
g_string_append_len (data, tmpname, MIN (len, 255));
g_free (tmpname);
}
else
{
/* conversion failed, we fall back to UTF-8 */
len = g_utf8_strlen (name, 255 - 3); /* need three marker-bytes */
nameend = g_utf8_offset_to_pointer (name, len);
len = nameend - name; /* in bytes */
g_assert (len + 3 <= 255);
g_string_append_c (data, len + 3);
g_string_append_len (data, "\xEF\xBB\xBF", 3); /* Unicode 0xfeff */
g_string_append_len (data, name, len);
if (tmpname)
g_free (tmpname);
}
if (data->len % 2) /* padding to even size */
g_string_append_c (data, 0);
g_free (name);
lenpos = data->len;
g_string_append_len (data, "\0\0\0\0", 4); /* will be filled in later */
len = data->len; /* to calculate the data size later */
pointrecord[1] = 6; /* fill rule record */
g_string_append_len (data, pointrecord, 26);
strokes = gimp_vectors_get_strokes (vectors[v], &num_strokes);
for (s = 0; s < num_strokes; s++)
{
GimpVectorsStrokeType type;
gdouble *points;
gint num_points;
gboolean closed;
gint p = 0;
type = gimp_vectors_stroke_get_points (vectors[v], strokes[s],
&num_points, &points, &closed);
if (type != GIMP_VECTORS_STROKE_TYPE_BEZIER ||
num_points > 65535 ||
num_points % 6)
{
g_printerr ("tiff-save: unsupported stroke type: "
"%d (%d points)\n", type, num_points);
continue;
}
memset (pointrecord, 0, 26);
pointrecord[1] = closed ? 0 : 3;
pointrecord[2] = (num_points / 6) / 256;
pointrecord[3] = (num_points / 6) % 256;
g_string_append_len (data, pointrecord, 26);
for (p = 0; p < num_points; p += 6)
{
pointrecord[1] = closed ? 2 : 5;
double_to_psd_fixed (points[p+1] / height, pointrecord + 2);
double_to_psd_fixed (points[p+0] / width, pointrecord + 6);
double_to_psd_fixed (points[p+3] / height, pointrecord + 10);
double_to_psd_fixed (points[p+2] / width, pointrecord + 14);
double_to_psd_fixed (points[p+5] / height, pointrecord + 18);
double_to_psd_fixed (points[p+4] / width, pointrecord + 22);
g_string_append_len (data, pointrecord, 26);
}
}
g_free (strokes);
/* fix up the length */
len = data->len - len;
data->str[lenpos + 0] = (len & 0xFF000000) >> 24;
data->str[lenpos + 1] = (len & 0x00FF0000) >> 16;
data->str[lenpos + 2] = (len & 0x0000FF00) >> 8;
data->str[lenpos + 3] = (len & 0x000000FF) >> 0;
g_string_append_len (ps_tag, data->str, data->len);
g_string_free (data, TRUE);
id ++;
}
TIFFSetField (tif, TIFFTAG_PHOTOSHOP, ps_tag->len, ps_tag->str);
g_string_free (ps_tag, TRUE);
g_free (vectors);
return TRUE;
}
/*
** pnmtotiff.c - converts a portable anymap to a Tagged Image File
**
** Derived by Jef Poskanzer from ras2tif.c, which is:
**
** Copyright (c) 1990 by Sun Microsystems, Inc.
**
** Author: Patrick J. Naughton
** naughton@wind.sun.com
**
** This file is provided AS IS with no warranties of any kind. The author
** shall have no liability with respect to the infringement of copyrights,
** trade secrets or any patents by this file or any part thereof. In no
** event will the author be liable for any lost revenue or profits or
** other special, indirect and consequential damages.
*/
static gboolean
save_image (const gchar *filename,
gint32 image,
gint32 layer,
gint32 orig_image, /* the export function might have */
GError **error) /* created a duplicate */
{
TIFF *tif;
gushort red[256];
gushort grn[256];
gushort blu[256];
gint cols, col, rows, row, i;
glong rowsperstrip;
gushort compression;
gushort extra_samples[1];
gboolean alpha;
gshort predictor;
gshort photometric;
gshort samplesperpixel;
gshort bitspersample;
gint bytesperrow;
guchar *t, *src, *data;
guchar *cmap;
gint num_colors;
gint success;
GimpDrawable *drawable;
GimpImageType drawable_type;
GimpPixelRgn pixel_rgn;
gint tile_height;
gint y, yend;
gint fd;
gboolean is_bw = FALSE;
gboolean invert = TRUE;
const guchar bw_map[] = { 0, 0, 0, 255, 255, 255 };
const guchar wb_map[] = { 255, 255, 255, 0, 0, 0 };
compression = tsvals.compression;
/* Disabled because this isn't in older releases of libtiff, and it
wasn't helping much anyway */
#if 0
if (TIFFFindCODEC((uint16) compression) == NULL)
compression = COMPRESSION_NONE; /* CODEC not available */
#endif
predictor = 0;
tile_height = gimp_tile_height ();
rowsperstrip = tile_height;
fd = g_open (filename, O_CREAT | O_TRUNC | O_WRONLY | _O_BINARY, 0666);
if (fd == -1)
{
g_set_error (error, G_FILE_ERROR, g_file_error_from_errno (errno),
_("Could not open '%s' for writing: %s"),
gimp_filename_to_utf8 (filename), g_strerror (errno));
return FALSE;
}
tif = TIFFFdOpen (fd, filename, "w");
TIFFSetWarningHandler (tiff_warning);
TIFFSetErrorHandler (tiff_error);
gimp_progress_init_printf (_("Saving '%s'"),
gimp_filename_to_utf8 (filename));
drawable = gimp_drawable_get (layer);
drawable_type = gimp_drawable_type (layer);
gimp_pixel_rgn_init (&pixel_rgn, drawable,
0, 0, drawable->width, drawable->height, FALSE, FALSE);
cols = drawable->width;
rows = drawable->height;
gimp_tile_cache_ntiles (1 + drawable->width / gimp_tile_width ());
switch (drawable_type)
{
case GIMP_RGB_IMAGE:
predictor = 2;
samplesperpixel = 3;
bitspersample = 8;
photometric = PHOTOMETRIC_RGB;
bytesperrow = cols * 3;
alpha = FALSE;
break;
case GIMP_GRAY_IMAGE:
samplesperpixel = 1;
bitspersample = 8;
photometric = PHOTOMETRIC_MINISBLACK;
bytesperrow = cols;
alpha = FALSE;
break;
case GIMP_RGBA_IMAGE:
predictor = 2;
samplesperpixel = 4;
bitspersample = 8;
photometric = PHOTOMETRIC_RGB;
bytesperrow = cols * 4;
alpha = TRUE;
break;
case GIMP_GRAYA_IMAGE:
samplesperpixel = 2;
bitspersample = 8;
photometric = PHOTOMETRIC_MINISBLACK;
bytesperrow = cols * 2;
alpha = TRUE;
break;
case GIMP_INDEXED_IMAGE:
cmap = gimp_image_get_colormap (image, &num_colors);
if (num_colors == 2 || num_colors == 1)
{
is_bw = (memcmp (cmap, bw_map, 3 * num_colors) == 0);
photometric = PHOTOMETRIC_MINISWHITE;
if (!is_bw)
{
is_bw = (memcmp (cmap, wb_map, 3 * num_colors) == 0);
if (is_bw)
invert = FALSE;
}
}
if (is_bw)
{
bitspersample = 1;
}
else
{
bitspersample = 8;
photometric = PHOTOMETRIC_PALETTE;
for (i = 0; i < num_colors; i++)
{
red[i] = cmap[i * 3 + 0] * 65535 / 255;
grn[i] = cmap[i * 3 + 1] * 65535 / 255;
blu[i] = cmap[i * 3 + 2] * 65535 / 255;
}
}
samplesperpixel = 1;
bytesperrow = cols;
alpha = FALSE;
g_free (cmap);
break;
case GIMP_INDEXEDA_IMAGE:
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
"%s",
"TIFF save cannot handle indexed images with alpha channel.");
default:
return FALSE;
}
if (compression == COMPRESSION_CCITTFAX3 ||
compression == COMPRESSION_CCITTFAX4)
{
if (bitspersample != 1 || samplesperpixel != 1)
{
g_message ("Only monochrome pictures can be compressed with \"CCITT Group 4\" or \"CCITT Group 3\".");
return FALSE;
}
}
/* Set TIFF parameters. */
TIFFSetField (tif, TIFFTAG_SUBFILETYPE, 0);
TIFFSetField (tif, TIFFTAG_IMAGEWIDTH, cols);
TIFFSetField (tif, TIFFTAG_IMAGELENGTH, rows);
TIFFSetField (tif, TIFFTAG_BITSPERSAMPLE, bitspersample);
TIFFSetField (tif, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);
TIFFSetField (tif, TIFFTAG_COMPRESSION, compression);
if ((compression == COMPRESSION_LZW || compression == COMPRESSION_DEFLATE)
&& (predictor != 0))
{
TIFFSetField (tif, TIFFTAG_PREDICTOR, predictor);
}
if (alpha)
{
if (tsvals.save_transp_pixels)
extra_samples [0] = EXTRASAMPLE_UNASSALPHA;
else
extra_samples [0] = EXTRASAMPLE_ASSOCALPHA;
TIFFSetField (tif, TIFFTAG_EXTRASAMPLES, 1, extra_samples);
}
TIFFSetField (tif, TIFFTAG_PHOTOMETRIC, photometric);
TIFFSetField (tif, TIFFTAG_DOCUMENTNAME, filename);
TIFFSetField (tif, TIFFTAG_SAMPLESPERPIXEL, samplesperpixel);
TIFFSetField (tif, TIFFTAG_ROWSPERSTRIP, rowsperstrip);
/* TIFFSetField( tif, TIFFTAG_STRIPBYTECOUNTS, rows / rowsperstrip ); */
TIFFSetField (tif, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
/* resolution fields */
{
gdouble xresolution;
gdouble yresolution;
gushort save_unit = RESUNIT_INCH;
GimpUnit unit;
gfloat factor;
gimp_image_get_resolution (orig_image, &xresolution, &yresolution);
unit = gimp_image_get_unit (orig_image);
factor = gimp_unit_get_factor (unit);
/* if we have a metric unit, save the resolution as centimeters
*/
if ((ABS (factor - 0.0254) < 1e-5) || /* m */
(ABS (factor - 0.254) < 1e-5) || /* dm */
(ABS (factor - 2.54) < 1e-5) || /* cm */
(ABS (factor - 25.4) < 1e-5)) /* mm */
{
save_unit = RESUNIT_CENTIMETER;
xresolution /= 2.54;
yresolution /= 2.54;
}
if (xresolution > 1e-5 && yresolution > 1e-5)
{
TIFFSetField (tif, TIFFTAG_XRESOLUTION, xresolution);
TIFFSetField (tif, TIFFTAG_YRESOLUTION, yresolution);
TIFFSetField (tif, TIFFTAG_RESOLUTIONUNIT, save_unit);
}
/* TODO: enable in 2.6
gint offset_x, offset_y;
gimp_drawable_offsets (layer, &offset_x, &offset_y);
if (offset_x || offset_y)
{
TIFFSetField (tif, TIFFTAG_XPOSITION, offset_x / xresolution);
TIFFSetField (tif, TIFFTAG_YPOSITION, offset_y / yresolution);
}
*/
}
/* The TIFF spec explicitely says ASCII for the image description. */
if (image_comment)
{
const gchar *c = image_comment;
gint len;
for (len = strlen (c); len; c++, len--)
{
if ((guchar) *c > 127)
{
g_message (_("The TIFF format only supports comments in\n"
"7bit ASCII encoding. No comment is saved."));
g_free (image_comment);
image_comment = NULL;
break;
}
}
}
/* do we have a comment? If so, create a new parasite to hold it,
* and attach it to the image. The attach function automatically
* detaches a previous incarnation of the parasite. */
if (image_comment && *image_comment)
{
GimpParasite *parasite;
TIFFSetField (tif, TIFFTAG_IMAGEDESCRIPTION, image_comment);
parasite = gimp_parasite_new ("gimp-comment",
GIMP_PARASITE_PERSISTENT,
strlen (image_comment) + 1, image_comment);
gimp_image_parasite_attach (orig_image, parasite);
gimp_parasite_free (parasite);
}
/* do we have an ICC profile? If so, write it to the TIFF file */
#ifdef TIFFTAG_ICCPROFILE
{
GimpParasite *parasite;
uint32 profile_size;
const guchar *icc_profile;
parasite = gimp_image_parasite_find (orig_image, "icc-profile");
if (parasite)
{
profile_size = gimp_parasite_data_size (parasite);
icc_profile = gimp_parasite_data (parasite);
TIFFSetField (tif, TIFFTAG_ICCPROFILE, profile_size, icc_profile);
gimp_parasite_free (parasite);
}
}
#endif
/* save path data */
save_paths (tif, orig_image);
if (!is_bw && drawable_type == GIMP_INDEXED_IMAGE)
TIFFSetField (tif, TIFFTAG_COLORMAP, red, grn, blu);
/* array to rearrange data */
src = g_new (guchar, bytesperrow * tile_height);
data = g_new (guchar, bytesperrow);
/* Now write the TIFF data. */
for (y = 0; y < rows; y = yend)
{
yend = y + tile_height;
yend = MIN (yend, rows);
gimp_pixel_rgn_get_rect (&pixel_rgn, src, 0, y, cols, yend - y);
for (row = y; row < yend; row++)
{
t = src + bytesperrow * (row - y);
switch (drawable_type)
{
case GIMP_INDEXED_IMAGE:
if (is_bw)
{
byte2bit (t, bytesperrow, data, invert);
success = (TIFFWriteScanline (tif, data, row, 0) >= 0);
}
else
{
success = (TIFFWriteScanline (tif, t, row, 0) >= 0);
}
break;
case GIMP_GRAY_IMAGE:
success = (TIFFWriteScanline (tif, t, row, 0) >= 0);
break;
case GIMP_GRAYA_IMAGE:
for (col = 0; col < cols*samplesperpixel; col+=samplesperpixel)
{
if (tsvals.save_transp_pixels)
{
data[col + 0] = t[col + 0];
}
else
{
/* pre-multiply gray by alpha */
data[col + 0] = (t[col + 0] * t[col + 1]) / 255;
}
data[col + 1] = t[col + 1]; /* alpha channel */
}
success = (TIFFWriteScanline (tif, data, row, 0) >= 0);
break;
case GIMP_RGB_IMAGE:
success = (TIFFWriteScanline (tif, t, row, 0) >= 0);
break;
case GIMP_RGBA_IMAGE:
for (col = 0; col < cols*samplesperpixel; col+=samplesperpixel)
{
if (tsvals.save_transp_pixels)
{
data[col+0] = t[col + 0];
data[col+1] = t[col + 1];
data[col+2] = t[col + 2];
}
else
{
/* pre-multiply rgb by alpha */
data[col+0] = t[col + 0] * t[col + 3] / 255;
data[col+1] = t[col + 1] * t[col + 3] / 255;
data[col+2] = t[col + 2] * t[col + 3] / 255;
}
data[col+3] = t[col + 3]; /* alpha channel */
}
success = (TIFFWriteScanline (tif, data, row, 0) >= 0);
break;
default:
success = FALSE;
break;
}
if (!success)
{
g_message ("Failed a scanline write on row %d", row);
return FALSE;
}
}
if ((row % 32) == 0)
gimp_progress_update ((gdouble) row / (gdouble) rows);
}
TIFFFlushData (tif);
TIFFClose (tif);
close (fd);
gimp_progress_update (1.0);
gimp_drawable_detach (drawable);
g_free (data);
return TRUE;
}
static gboolean
save_dialog (gboolean has_alpha,
gboolean is_monochrome)
{
GtkWidget *dialog;
GtkWidget *vbox;
GtkWidget *frame;
GtkWidget *hbox;
GtkWidget *label;
GtkWidget *entry;
GtkWidget *toggle;
GtkWidget *g3;
GtkWidget *g4;
gboolean run;
dialog = gimp_export_dialog_new (_("TIFF"), PLUG_IN_BINARY, SAVE_PROC);
vbox = gtk_vbox_new (FALSE, 12);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
gtk_box_pack_start (GTK_BOX (gimp_export_dialog_get_content_area (dialog)),
vbox, FALSE, TRUE, 0);
/* compression */
frame = gimp_int_radio_group_new (TRUE, _("Compression"),
G_CALLBACK (gimp_radio_button_update),
&tsvals.compression, tsvals.compression,
_("_None"), COMPRESSION_NONE, NULL,
_("_LZW"), COMPRESSION_LZW, NULL,
_("_Pack Bits"), COMPRESSION_PACKBITS, NULL,
_("_Deflate"), COMPRESSION_DEFLATE, NULL,
_("_JPEG"), COMPRESSION_JPEG, NULL,
_("CCITT Group _3 fax"), COMPRESSION_CCITTFAX3, &g3,
_("CCITT Group _4 fax"), COMPRESSION_CCITTFAX4, &g4,
NULL);
gtk_widget_set_sensitive (g3, is_monochrome);
gtk_widget_set_sensitive (g4, is_monochrome);
if (! is_monochrome)
{
if (tsvals.compression == COMPRESSION_CCITTFAX3 ||
tsvals.compression == COMPRESSION_CCITTFAX4)
{
gimp_int_radio_group_set_active (GTK_RADIO_BUTTON (g3),
COMPRESSION_NONE);
}
}
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
/* Keep colors behind alpha mask */
toggle = gtk_check_button_new_with_mnemonic
( _("Save _color values from transparent pixels"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
has_alpha && tsvals.save_transp_pixels);
gtk_widget_set_sensitive (toggle, has_alpha);
gtk_box_pack_start (GTK_BOX (vbox), toggle, FALSE, FALSE, 0);
gtk_widget_show (toggle);
g_signal_connect (toggle, "toggled",
G_CALLBACK (gimp_toggle_button_update),
&tsvals.save_transp_pixels);
/* comment entry */
hbox = gtk_hbox_new (FALSE, 6);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
label = gtk_label_new ( _("Comment:"));
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
entry = gtk_entry_new ();
gtk_widget_show (entry);
gtk_box_pack_start (GTK_BOX (hbox), entry, TRUE, TRUE, 0);
gtk_entry_set_text (GTK_ENTRY (entry), image_comment ? image_comment : "");
g_signal_connect (entry, "changed",
G_CALLBACK (comment_entry_callback),
NULL);
gtk_widget_show (frame);
gtk_widget_show (vbox);
gtk_widget_show (dialog);
run = (gimp_dialog_run (GIMP_DIALOG (dialog)) == GTK_RESPONSE_OK);
gtk_widget_destroy (dialog);
return run;
}
static void
comment_entry_callback (GtkWidget *widget,
gpointer data)
{
const gchar *text = gtk_entry_get_text (GTK_ENTRY (widget));
g_free (image_comment);
image_comment = g_strdup (text);
}
/* Convert n bytes of 0/1 to a line of bits */
static void
byte2bit (const guchar *byteline,
gint width,
guchar *bitline,
gboolean invert)
{
guchar bitval;
guchar rest[8];
while (width >= 8)
{
bitval = 0;
if (*(byteline++)) bitval |= 0x80;
if (*(byteline++)) bitval |= 0x40;
if (*(byteline++)) bitval |= 0x20;
if (*(byteline++)) bitval |= 0x10;
if (*(byteline++)) bitval |= 0x08;
if (*(byteline++)) bitval |= 0x04;
if (*(byteline++)) bitval |= 0x02;
if (*(byteline++)) bitval |= 0x01;
*(bitline++) = invert ? ~bitval : bitval;
width -= 8;
}
if (width > 0)
{
memset (rest, 0, 8);
memcpy (rest, byteline, width);
bitval = 0;
byteline = rest;
if (*(byteline++)) bitval |= 0x80;
if (*(byteline++)) bitval |= 0x40;
if (*(byteline++)) bitval |= 0x20;
if (*(byteline++)) bitval |= 0x10;
if (*(byteline++)) bitval |= 0x08;
if (*(byteline++)) bitval |= 0x04;
if (*(byteline++)) bitval |= 0x02;
*bitline = invert ? ~bitval & (0xff << (8 - width)) : bitval;
}
}
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