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|
/* tiff exporting 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 <tiffio.h>
#include <gexiv2/gexiv2.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "file-tiff-io.h"
#include "file-tiff-save.h"
#include "libgimp/stdplugins-intl.h"
#define PLUG_IN_ROLE "gimp-file-tiff-save"
static gboolean save_paths (TIFF *tif,
gint32 image,
gdouble width,
gdouble height,
gint offset_x,
gint offset_y);
static void comment_entry_callback (GtkWidget *widget,
gchar **comment);
static void byte2bit (const guchar *byteline,
gint width,
guchar *bitline,
gboolean invert);
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,
gdouble width,
gdouble height,
gint offset_x,
gint offset_y)
{
gint id = 2000; /* Photoshop paths have IDs >= 2000 */
gint num_vectors, *vectors, v;
gint num_strokes, *strokes, s;
GString *ps_tag;
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_item_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] - offset_y) / height, pointrecord + 2);
double_to_psd_fixed ((points[p+0] - offset_x) / width, pointrecord + 6);
double_to_psd_fixed ((points[p+3] - offset_y) / height, pointrecord + 10);
double_to_psd_fixed ((points[p+2] - offset_x) / width, pointrecord + 14);
double_to_psd_fixed ((points[p+5] - offset_y) / height, pointrecord + 18);
double_to_psd_fixed ((points[p+4] - offset_x) / 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_layer (TIFF *tif,
TiffSaveVals *tsvals,
gint32 image,
gint32 layer,
gint32 page,
gint32 num_pages,
gint32 orig_image, /* the export function might */
/* have created a duplicate */
gint origin_x,
gint origin_y,
gint *saved_bpp,
gboolean out_linear,
GError **error)
{
gboolean status = FALSE;
gushort red[256];
gushort grn[256];
gushort blu[256];
gint cols, rows, row, i;
glong rowsperstrip;
gushort compression;
gushort extra_samples[1];
gboolean alpha;
gshort predictor;
gshort photometric;
const Babl *format;
const Babl *type;
gshort samplesperpixel;
gshort bitspersample;
gshort sampleformat;
gint bytesperrow;
guchar *src = NULL;
guchar *data = NULL;
guchar *cmap;
gint num_colors;
gint success;
GimpImageType drawable_type;
GeglBuffer *buffer = NULL;
gint tile_height;
gint y, yend;
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 };
gchar *layer_name = NULL;
const gdouble progress_base = (gdouble) page / (gdouble) num_pages;
const gdouble progress_fraction = 1.0 / (gdouble) num_pages;
gdouble xresolution;
gdouble yresolution;
gushort save_unit = RESUNIT_INCH;
gint offset_x, offset_y;
compression = tsvals->compression;
layer_name = gimp_item_get_name (layer);
/* 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;
drawable_type = gimp_drawable_type (layer);
buffer = gimp_drawable_get_buffer (layer);
format = gegl_buffer_get_format (buffer);
type = babl_format_get_type (format, 0);
switch (gimp_image_get_precision (image))
{
case GIMP_PRECISION_U8_LINEAR:
case GIMP_PRECISION_U8_GAMMA:
/* Promote to 16-bit if storage and export TRC don't match. */
if ((gimp_image_get_precision (image) == GIMP_PRECISION_U8_LINEAR && out_linear) ||
(gimp_image_get_precision (image) != GIMP_PRECISION_U8_LINEAR && ! out_linear))
{
bitspersample = 8;
sampleformat = SAMPLEFORMAT_UINT;
}
else
{
bitspersample = 16;
sampleformat = SAMPLEFORMAT_UINT;
type = babl_type ("u16");
}
break;
case GIMP_PRECISION_U16_LINEAR:
case GIMP_PRECISION_U16_GAMMA:
bitspersample = 16;
sampleformat = SAMPLEFORMAT_UINT;
break;
case GIMP_PRECISION_U32_LINEAR:
case GIMP_PRECISION_U32_GAMMA:
bitspersample = 32;
sampleformat = SAMPLEFORMAT_UINT;
break;
case GIMP_PRECISION_HALF_LINEAR:
case GIMP_PRECISION_HALF_GAMMA:
bitspersample = 16;
sampleformat = SAMPLEFORMAT_IEEEFP;
break;
default:
case GIMP_PRECISION_FLOAT_LINEAR:
case GIMP_PRECISION_FLOAT_GAMMA:
bitspersample = 32;
sampleformat = SAMPLEFORMAT_IEEEFP;
break;
case GIMP_PRECISION_DOUBLE_LINEAR:
case GIMP_PRECISION_DOUBLE_GAMMA:
bitspersample = 64;
sampleformat = SAMPLEFORMAT_IEEEFP;
break;
}
*saved_bpp = bitspersample;
cols = gegl_buffer_get_width (buffer);
rows = gegl_buffer_get_height (buffer);
switch (drawable_type)
{
case GIMP_RGB_IMAGE:
predictor = 2;
samplesperpixel = 3;
photometric = PHOTOMETRIC_RGB;
alpha = FALSE;
if (out_linear)
{
format = babl_format_new (babl_model ("RGB"),
type,
babl_component ("R"),
babl_component ("G"),
babl_component ("B"),
NULL);
}
else
{
format = babl_format_new (babl_model ("R'G'B'"),
type,
babl_component ("R'"),
babl_component ("G'"),
babl_component ("B'"),
NULL);
}
break;
case GIMP_GRAY_IMAGE:
samplesperpixel = 1;
photometric = PHOTOMETRIC_MINISBLACK;
alpha = FALSE;
if (out_linear)
{
format = babl_format_new (babl_model ("Y"),
type,
babl_component ("Y"),
NULL);
}
else
{
format = babl_format_new (babl_model ("Y'"),
type,
babl_component ("Y'"),
NULL);
}
break;
case GIMP_RGBA_IMAGE:
predictor = 2;
samplesperpixel = 4;
photometric = PHOTOMETRIC_RGB;
alpha = TRUE;
if (tsvals->save_transp_pixels)
{
if (out_linear)
{
format = babl_format_new (babl_model ("RGBA"),
type,
babl_component ("R"),
babl_component ("G"),
babl_component ("B"),
babl_component ("A"),
NULL);
}
else
{
format = babl_format_new (babl_model ("R'G'B'A"),
type,
babl_component ("R'"),
babl_component ("G'"),
babl_component ("B'"),
babl_component ("A"),
NULL);
}
}
else
{
if (out_linear)
{
format = babl_format_new (babl_model ("RaGaBaA"),
type,
babl_component ("Ra"),
babl_component ("Ga"),
babl_component ("Ba"),
babl_component ("A"),
NULL);
}
else
{
format = babl_format_new (babl_model ("R'aG'aB'aA"),
type,
babl_component ("R'a"),
babl_component ("G'a"),
babl_component ("B'a"),
babl_component ("A"),
NULL);
}
}
break;
case GIMP_GRAYA_IMAGE:
samplesperpixel = 2;
photometric = PHOTOMETRIC_MINISBLACK;
alpha = TRUE;
if (tsvals->save_transp_pixels)
{
if (out_linear)
{
format = babl_format_new (babl_model ("YA"),
type,
babl_component ("Y"),
babl_component ("A"),
NULL);
}
else
{
format = babl_format_new (babl_model ("Y'A"),
type,
babl_component ("Y'"),
babl_component ("A"),
NULL);
}
}
else
{
if (out_linear)
{
format = babl_format_new (babl_model ("YaA"),
type,
babl_component ("Ya"),
babl_component ("A"),
NULL);
}
else
{
format = babl_format_new (babl_model ("Y'aA"),
type,
babl_component ("Y'a"),
babl_component ("A"),
NULL);
}
}
break;
case GIMP_INDEXED_IMAGE:
case GIMP_INDEXEDA_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 = (drawable_type == GIMP_INDEXEDA_IMAGE) ? 2 : 1;
bytesperrow = cols;
alpha = (drawable_type == GIMP_INDEXEDA_IMAGE);
format = gimp_drawable_get_format (layer);
g_free (cmap);
break;
default:
goto out;
}
bytesperrow = cols * babl_format_get_bytes_per_pixel (format);
if (compression == COMPRESSION_CCITTFAX3 ||
compression == COMPRESSION_CCITTFAX4)
{
if (bitspersample != 1 || samplesperpixel != 1)
{
const gchar *msg = _("Only monochrome pictures can be compressed "
"with \"CCITT Group 4\" or \"CCITT Group 3\".");
g_set_error_literal (error, G_FILE_ERROR, G_FILE_ERROR_FAILED, msg);
goto out;
}
}
if (compression == COMPRESSION_JPEG)
{
if (gimp_image_base_type (image) == GIMP_INDEXED)
{
g_set_error_literal (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Indexed pictures cannot be compressed "
"with \"JPEG\"."));
goto out;
}
}
/* Set TIFF parameters. */
if (num_pages > 1)
{
TIFFSetField (tif, TIFFTAG_SUBFILETYPE, FILETYPE_PAGE);
TIFFSetField (tif, TIFFTAG_PAGENUMBER, page, num_pages);
}
TIFFSetField (tif, TIFFTAG_PAGENAME, layer_name);
TIFFSetField (tif, TIFFTAG_IMAGEWIDTH, cols);
TIFFSetField (tif, TIFFTAG_IMAGELENGTH, rows);
TIFFSetField (tif, TIFFTAG_BITSPERSAMPLE, bitspersample);
TIFFSetField (tif, TIFFTAG_SAMPLEFORMAT, sampleformat);
TIFFSetField (tif, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);
TIFFSetField (tif, TIFFTAG_COMPRESSION, compression);
if ((compression == COMPRESSION_LZW ||
compression == COMPRESSION_ADOBE_DEFLATE) &&
(predictor != 0))
{
TIFFSetField (tif, TIFFTAG_PREDICTOR, predictor);
}
if (alpha)
{
if (tsvals->save_transp_pixels ||
/* Associated alpha, hence premultiplied components is
* meaningless for palette images with transparency in TIFF
* format, since alpha is set per pixel, not per color (so a
* given color could be set to different alpha on different
* pixels, hence it cannot be premultiplied).
*/
drawable_type == GIMP_INDEXEDA_IMAGE)
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_SAMPLESPERPIXEL, samplesperpixel);
TIFFSetField (tif, TIFFTAG_ROWSPERSTRIP, rowsperstrip);
/* TIFFSetField( tif, TIFFTAG_STRIPBYTECOUNTS, rows / rowsperstrip ); */
TIFFSetField (tif, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
/* resolution fields */
gimp_image_get_resolution (orig_image, &xresolution, &yresolution);
if (gimp_unit_is_metric (gimp_image_get_unit (orig_image)))
{
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);
}
gimp_drawable_offsets (layer, &offset_x, &offset_y);
offset_x -= origin_x;
offset_y -= origin_y;
if (offset_x || offset_y)
{
TIFFSetField (tif, TIFFTAG_XPOSITION, offset_x / xresolution);
TIFFSetField (tif, TIFFTAG_YPOSITION, offset_y / yresolution);
}
if (! is_bw &&
(drawable_type == GIMP_INDEXED_IMAGE || drawable_type == GIMP_INDEXEDA_IMAGE))
TIFFSetField (tif, TIFFTAG_COLORMAP, red, grn, blu);
/* save path data. we need layer information for that,
* so we have to do this in here. :-( */
if (page == 0)
save_paths (tif, orig_image, cols, rows, offset_x, offset_y);
/* 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);
gegl_buffer_get (buffer,
GEGL_RECTANGLE (0, y, cols, yend - y), 1.0,
format, src,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
for (row = y; row < yend; row++)
{
guchar *t = src + bytesperrow * (row - y);
switch (drawable_type)
{
case GIMP_INDEXED_IMAGE:
case GIMP_INDEXEDA_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:
case GIMP_GRAYA_IMAGE:
case GIMP_RGB_IMAGE:
case GIMP_RGBA_IMAGE:
success = (TIFFWriteScanline (tif, t, row, 0) >= 0);
break;
default:
success = FALSE;
break;
}
if (! success)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Failed a scanline write on row %d"), row);
goto out;
}
}
if ((row % 32) == 0)
gimp_progress_update (progress_base + progress_fraction
* (gdouble) row / (gdouble) rows);
}
/* Save GeoTIFF tags to file, if available */
if (tsvals->save_geotiff)
{
GimpParasite *parasite = NULL;
parasite = gimp_image_get_parasite (image,"Gimp_GeoTIFF_ModelPixelScale");
if (parasite)
{
TIFFSetField (tif,
GEOTIFF_MODELPIXELSCALE,
(gimp_parasite_data_size (parasite) / TIFFDataWidth (TIFF_DOUBLE)),
gimp_parasite_data (parasite));
gimp_parasite_free (parasite);
}
parasite = gimp_image_get_parasite (image,"Gimp_GeoTIFF_ModelTiePoint");
if (parasite)
{
TIFFSetField (tif,
GEOTIFF_MODELTIEPOINT,
(gimp_parasite_data_size (parasite) / TIFFDataWidth (TIFF_DOUBLE)),
gimp_parasite_data (parasite));
gimp_parasite_free (parasite);
}
parasite = gimp_image_get_parasite (image,"Gimp_GeoTIFF_ModelTransformation");
if (parasite)
{
TIFFSetField (tif,
GEOTIFF_MODELTRANSFORMATION,
(gimp_parasite_data_size (parasite) / TIFFDataWidth (TIFF_DOUBLE)),
gimp_parasite_data (parasite));
gimp_parasite_free (parasite);
}
parasite = gimp_image_get_parasite (image,"Gimp_GeoTIFF_KeyDirectory");
if (parasite)
{
TIFFSetField (tif,
GEOTIFF_KEYDIRECTORY,
(gimp_parasite_data_size (parasite) / TIFFDataWidth (TIFF_SHORT)),
gimp_parasite_data (parasite));
gimp_parasite_free (parasite);
}
parasite = gimp_image_get_parasite (image,"Gimp_GeoTIFF_DoubleParams");
if (parasite)
{
TIFFSetField (tif,
GEOTIFF_DOUBLEPARAMS,
(gimp_parasite_data_size (parasite) / TIFFDataWidth (TIFF_DOUBLE)),
gimp_parasite_data (parasite));
gimp_parasite_free (parasite);
}
parasite = gimp_image_get_parasite (image,"Gimp_GeoTIFF_Asciiparams");
if (parasite)
{
TIFFSetField (tif,
GEOTIFF_ASCIIPARAMS,
gimp_parasite_data (parasite));
gimp_parasite_free (parasite);
}
}
TIFFWriteDirectory (tif);
gimp_progress_update (progress_base + progress_fraction);
status = TRUE;
out:
if (buffer)
g_object_unref (buffer);
g_free (data);
g_free (src);
g_free (layer_name);
return status;
}
/* FIXME Most of the stuff in save_metadata except the
* thumbnail saving should probably be moved to
* gimpmetadata.c and gimpmetadata-save.c.
*/
static void
save_metadata (GFile *file,
TiffSaveVals *tsvals,
gint32 image,
GimpMetadata *metadata,
GimpMetadataSaveFlags metadata_flags,
gint saved_bpp)
{
gchar **exif_tags;
/* See bug 758909: clear TIFFTAG_MIN/MAXSAMPLEVALUE because
* exiv2 saves them with wrong type and the original values
* could be invalid, see also bug 761823.
* we also clear some other tags that were only meaningful
* for the original imported image.
*/
static const gchar *exif_tags_to_remove[] =
{
"Exif.Image.0x0118", /* MinSampleValue */
"Exif.Image.0x0119", /* MaxSampleValue */
"Exif.Image.0x011d", /* PageName */
"Exif.Image.Compression",
"Exif.Image.FillOrder",
"Exif.Image.InterColorProfile",
"Exif.Image.NewSubfileType",
"Exif.Image.PageNumber",
"Exif.Image.PhotometricInterpretation",
"Exif.Image.PlanarConfiguration",
"Exif.Image.Predictor",
"Exif.Image.RowsPerStrip",
"Exif.Image.SampleFormat",
"Exif.Image.SamplesPerPixel",
"Exif.Image.StripByteCounts",
"Exif.Image.StripOffsets"
};
static const guint n_keys = G_N_ELEMENTS(exif_tags_to_remove);
for (int k = 0; k < n_keys; k++)
{
gexiv2_metadata_clear_tag (GEXIV2_METADATA (metadata),
exif_tags_to_remove[k]);
}
/* get rid of all the EXIF tags for anything but the first sub image. */
exif_tags = gexiv2_metadata_get_exif_tags (GEXIV2_METADATA(metadata));
for (char **tag = exif_tags; *tag; tag++)
{
/* Keeping Exif.Image2, 3 can cause exiv2 to save faulty extra TIFF pages
* that are empty except for the Exif metadata. See issue #7195. */
if (g_str_has_prefix (*tag, "Exif.Image")
&& (*tag)[strlen ("Exif.Image")] >= '0'
&& (*tag)[strlen ("Exif.Image")] <= '9')
gexiv2_metadata_clear_tag (GEXIV2_METADATA (metadata), *tag);
if (g_str_has_prefix (*tag, "Exif.SubImage")
&& (*tag)[strlen ("Exif.SubImage")] >= '0'
&& (*tag)[strlen ("Exif.SubImage")] <= '9')
gexiv2_metadata_clear_tag (GEXIV2_METADATA (metadata), *tag);
if (g_str_has_prefix (*tag, "Exif.Thumbnail"))
gexiv2_metadata_clear_tag (GEXIV2_METADATA (metadata), *tag);
}
gimp_metadata_set_bits_per_sample (metadata, saved_bpp);
if (tsvals->save_exif)
metadata_flags |= GIMP_METADATA_SAVE_EXIF;
else
metadata_flags &= ~GIMP_METADATA_SAVE_EXIF;
if (tsvals->save_xmp)
metadata_flags |= GIMP_METADATA_SAVE_XMP;
else
metadata_flags &= ~GIMP_METADATA_SAVE_XMP;
if (tsvals->save_iptc)
metadata_flags |= GIMP_METADATA_SAVE_IPTC;
else
metadata_flags &= ~GIMP_METADATA_SAVE_IPTC;
if (tsvals->save_thumbnail)
metadata_flags |= GIMP_METADATA_SAVE_THUMBNAIL;
else
metadata_flags &= ~GIMP_METADATA_SAVE_THUMBNAIL;
if (tsvals->save_profile)
metadata_flags |= GIMP_METADATA_SAVE_COLOR_PROFILE;
else
metadata_flags &= ~GIMP_METADATA_SAVE_COLOR_PROFILE;
gimp_image_metadata_save_finish (image,
"image/tiff",
metadata, metadata_flags,
file, NULL);
}
gboolean
save_image (GFile *file,
TiffSaveVals *tsvals,
gint32 image,
gint32 orig_image, /* the export function */
/* might have created */
/* a duplicate */
const gchar *image_comment,
gint *saved_bpp,
GimpMetadata *metadata,
GimpMetadataSaveFlags metadata_flags,
GError **error)
{
TIFF *tif = NULL;
gboolean status = FALSE;
gboolean out_linear = FALSE;
gint32 num_layers, *layers, current_layer = 0;
gint origin_x = 0, origin_y = 0;
gint32 i;
layers = gimp_image_get_layers (image, &num_layers);
gimp_progress_init_printf (_("Exporting '%s'"),
gimp_file_get_utf8_name (file));
/* Open file and write some global data */
#ifdef TIFF_VERSION_BIG
tif = tiff_open (file, (tsvals->bigtiff ? "w8" : "w"), error);
#else
tif = tiff_open (file, "w", error);
#endif
if (! tif)
{
if (! error)
g_set_error (error, G_FILE_ERROR, g_file_error_from_errno (errno),
_("Could not open '%s' for writing: %s"),
gimp_file_get_utf8_name (file), g_strerror (errno));
goto out;
}
/* The TIFF spec explicitly 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."));
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_attach_parasite (orig_image, parasite);
gimp_parasite_free (parasite);
}
#ifdef TIFFTAG_ICCPROFILE
if (tsvals->save_profile)
{
GimpColorProfile *profile;
const guint8 *icc_data;
gsize icc_length;
profile = gimp_image_get_effective_color_profile (orig_image);
/* Curve of the exported data depends on the saved profile, i.e.
* any explicitly-set profile in priority, or the default one for
* the storage format as fallback.
*/
out_linear = (gimp_color_profile_is_linear (profile));
/* Write the profile to the TIFF file. */
icc_data = gimp_color_profile_get_icc_profile (profile, &icc_length);
TIFFSetField (tif, TIFFTAG_ICCPROFILE, icc_length, icc_data);
g_object_unref (profile);
}
#endif
/* calculate the top-left coordinates */
for (i = 0; i < num_layers; i++)
{
gint offset_x, offset_y;
gimp_drawable_offsets (layers[i], &offset_x, &offset_y);
origin_x = MIN (origin_x, offset_x);
origin_y = MIN (origin_y, offset_y);
}
/* write last layer as first page. */
if (! save_layer (tif, tsvals, image,
layers[num_layers - current_layer - 1],
current_layer, num_layers, orig_image,
origin_x, origin_y,
saved_bpp, out_linear, error))
{
goto out;
}
current_layer++;
/* close file so we can safely let exiv2 work on it to write metadata.
* this can be simplified once multi page TIFF is supported by exiv2
*/
TIFFFlushData (tif);
TIFFClose (tif);
tif = NULL;
if (metadata)
save_metadata (file, tsvals, image, metadata, metadata_flags, *saved_bpp);
/* write the remaining layers */
if (num_layers > 1)
{
tif = tiff_open (file, "a", error);
if (! tif)
{
if (! error)
g_set_error (error, G_FILE_ERROR,
g_file_error_from_errno (errno),
_("Could not open '%s' for writing: %s"),
gimp_file_get_utf8_name (file),
g_strerror (errno));
goto out;
}
for (; current_layer < num_layers; current_layer++)
{
gint tmp_saved_bpp;
if (! save_layer (tif, tsvals, image,
layers[num_layers - current_layer - 1],
current_layer, num_layers, orig_image,
origin_x, origin_y,
&tmp_saved_bpp, out_linear, error))
{
goto out;
}
if (tmp_saved_bpp != *saved_bpp)
{
/* this should never happen.
* if it does, decide if it's really an error.
*/
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Writing pages with different bit depth "
"is strange."));
goto out;
}
gimp_progress_update ((gdouble) (current_layer + 1) / num_layers);
}
}
status = TRUE;
out:
/* close the file for good */
if (tif)
{
TIFFFlushData (tif);
TIFFClose (tif);
}
gimp_progress_update (1.0);
return status;
}
gboolean
save_dialog (TiffSaveVals *tsvals,
gint32 image,
const gchar *help_id,
gboolean has_alpha,
gboolean is_monochrome,
gboolean is_indexed,
gchar **image_comment,
GError **error,
gboolean classic_tiff_failed)
{
GtkWidget *dialog;
GtkWidget *vbox;
GtkWidget *frame;
GtkWidget *entry;
GtkWidget *toggle;
GtkWidget *label;
GtkWidget *cmp_g3;
GtkWidget *cmp_g4;
GtkWidget *cmp_jpeg;
GtkBuilder *builder;
gchar *ui_file;
gchar **parasites;
gboolean run;
gboolean has_geotiff = FALSE;
gint n_parasites;
gint i;
parasites = gimp_image_get_parasite_list (image, &n_parasites);
for (i = 0; i < n_parasites; i++)
{
if (g_str_has_prefix (parasites[i], "Gimp_GeoTIFF_"))
{
has_geotiff = TRUE;
break;
}
}
g_strfreev (parasites);
dialog = gimp_export_dialog_new (_("TIFF"), PLUG_IN_ROLE, help_id);
builder = gtk_builder_new ();
ui_file = g_build_filename (gimp_data_directory (),
"ui", "plug-ins", "plug-in-file-tiff.ui",
NULL);
if (! gtk_builder_add_from_file (builder, ui_file, error))
{
gchar *display_name = g_filename_display_name (ui_file);
g_printerr (_("Error loading UI file '%s': %s"),
display_name, error ? (*error)->message : _("Unknown error"));
g_free (display_name);
}
g_free (ui_file);
vbox = GTK_WIDGET (gtk_builder_get_object (builder, "tiff_export_vbox"));
gtk_box_pack_start (GTK_BOX (gimp_export_dialog_get_content_area (dialog)),
vbox, FALSE, FALSE, 0);
gtk_widget_show (vbox);
vbox = GTK_WIDGET (gtk_builder_get_object (builder, "radio_button_box"));
label = GTK_WIDGET (gtk_builder_get_object (builder, "bigtiff-warning"));
#ifdef TIFF_VERSION_BIG
if (classic_tiff_failed)
{
gtk_label_set_markup (GTK_LABEL (label),
_("<i>Warning: maximum TIFF file size exceeded.\n Retry as BigTIFF or cancel.</i>"));
gtk_label_set_line_wrap (GTK_LABEL (label), TRUE);
gtk_label_set_line_wrap_mode (GTK_LABEL (label), PANGO_WRAP_WORD);
gtk_label_set_max_width_chars (GTK_LABEL (label), 60);
}
#endif
if (! classic_tiff_failed)
{
gtk_widget_hide (label);
}
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_ADOBE_DEFLATE, NULL,
_("_JPEG"), COMPRESSION_JPEG, &cmp_jpeg,
_("CCITT Group _3 fax"), COMPRESSION_CCITTFAX3, &cmp_g3,
_("CCITT Group _4 fax"), COMPRESSION_CCITTFAX4, &cmp_g4,
NULL);
gtk_widget_set_sensitive (cmp_g3, is_monochrome);
gtk_widget_set_sensitive (cmp_g4, is_monochrome);
gtk_widget_set_sensitive (cmp_jpeg, ! is_indexed);
if (! is_monochrome)
{
if (tsvals->compression == COMPRESSION_CCITTFAX3 ||
tsvals->compression == COMPRESSION_CCITTFAX4)
{
gimp_int_radio_group_set_active (GTK_RADIO_BUTTON (cmp_g3),
COMPRESSION_NONE);
}
}
if (is_indexed && tsvals->compression == COMPRESSION_JPEG)
{
gimp_int_radio_group_set_active (GTK_RADIO_BUTTON (cmp_jpeg),
COMPRESSION_NONE);
}
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
toggle = GTK_WIDGET (gtk_builder_get_object (builder, "save-alpha"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
has_alpha && (tsvals->save_transp_pixels || is_indexed));
gtk_widget_set_sensitive (toggle, has_alpha && ! is_indexed);
g_signal_connect (toggle, "toggled",
G_CALLBACK (gimp_toggle_button_update),
&tsvals->save_transp_pixels);
entry = GTK_WIDGET (gtk_builder_get_object (builder, "commentfield"));
gtk_entry_set_text (GTK_ENTRY (entry), *image_comment ? *image_comment : "");
g_signal_connect (entry, "changed",
G_CALLBACK (comment_entry_callback),
image_comment);
toggle = GTK_WIDGET (gtk_builder_get_object (builder, "save-exif"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
tsvals->save_exif);
g_signal_connect (toggle, "toggled",
G_CALLBACK (gimp_toggle_button_update),
&tsvals->save_exif);
toggle = GTK_WIDGET (gtk_builder_get_object (builder, "save-xmp"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
tsvals->save_xmp);
g_signal_connect (toggle, "toggled",
G_CALLBACK (gimp_toggle_button_update),
&tsvals->save_xmp);
toggle = GTK_WIDGET (gtk_builder_get_object (builder, "save-iptc"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
tsvals->save_iptc);
g_signal_connect (toggle, "toggled",
G_CALLBACK (gimp_toggle_button_update),
&tsvals->save_iptc);
toggle = GTK_WIDGET (gtk_builder_get_object (builder, "save-geotiff"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
has_geotiff && tsvals->save_geotiff);
gtk_widget_set_sensitive (toggle, has_geotiff);;
g_signal_connect (toggle, "toggled",
G_CALLBACK (gimp_toggle_button_update),
&tsvals->save_geotiff);
toggle = GTK_WIDGET (gtk_builder_get_object (builder, "save-thumbnail"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
tsvals->save_thumbnail);
g_signal_connect (toggle, "toggled",
G_CALLBACK (gimp_toggle_button_update),
&tsvals->save_thumbnail);
toggle = GTK_WIDGET (gtk_builder_get_object (builder, "save-color-profile"));
#ifdef TIFFTAG_ICCPROFILE
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
tsvals->save_profile);
g_signal_connect (toggle, "toggled",
G_CALLBACK (gimp_toggle_button_update),
&tsvals->save_profile);
#else
gtk_widget_hide (toggle);
#endif
toggle = GTK_WIDGET (gtk_builder_get_object (builder, "bigtiff"));
#ifdef TIFF_VERSION_BIG
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
tsvals->bigtiff);
g_signal_connect (toggle, "toggled",
G_CALLBACK (gimp_toggle_button_update),
&tsvals->bigtiff);
#else
gtk_widget_hide (toggle);
#endif
toggle = GTK_WIDGET (gtk_builder_get_object (builder, "save-layers"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
tsvals->save_layers);
g_signal_connect (toggle, "toggled",
G_CALLBACK (gimp_toggle_button_update),
&tsvals->save_layers);
frame = GTK_WIDGET (gtk_builder_get_object (builder, "layers-frame"));
g_object_bind_property (toggle, "active",
frame, "sensitive",
G_BINDING_SYNC_CREATE);
toggle = GTK_WIDGET (gtk_builder_get_object (builder, "crop-layers"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
tsvals->crop_layers);
g_signal_connect (toggle, "toggled",
G_CALLBACK (gimp_toggle_button_update),
&tsvals->crop_layers);
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,
gchar **comment)
{
const gchar *text = gtk_entry_get_text (GTK_ENTRY (widget));
g_free (*comment);
*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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