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gimp/plug-ins/file-fits/fits.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
* FITS file plugin
* reading and writing code Copyright (C) 1997 Peter Kirchgessner
* e-mail: peter@kirchgessner.net, WWW: http://www.kirchgessner.net
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* 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, see <https://www.gnu.org/licenses/>.
*
*/
/* Event history:
* V 1.00, PK, 05-May-97: Creation
* V 1.01, PK, 19-May-97: Problem with compilation on Irix fixed
* V 1.02, PK, 08-Jun-97: Bug with saving gray images fixed
* V 1.03, PK, 05-Oct-97: Parse rc-file
* V 1.04, PK, 12-Oct-97: No progress bars for non-interactive mode
* V 1.05, nn, 20-Dec-97: Initialize image_ID in run()
* V 1.06, PK, 21-Nov-99: Internationalization
* Fix bug with gimp_export_image()
* (moved it from load to save)
* V 1.07, PK, 16-Aug-06: Fix problems with internationalization
* (writing 255,0 instead of 255.0)
* Fix problem with not filling up properly last record
*/
#include "config.h"
#include <string.h>
#include <errno.h>
#include <glib/gstdio.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "fits-io.h"
#include "libgimp/stdplugins-intl.h"
#define LOAD_PROC "file-fits-load"
#define SAVE_PROC "file-fits-save"
#define PLUG_IN_BINARY "file-fits"
#define PLUG_IN_ROLE "gimp-file-fits"
typedef struct _Fits Fits;
typedef struct _FitsClass FitsClass;
struct _Fits
{
GimpPlugIn parent_instance;
};
struct _FitsClass
{
GimpPlugInClass parent_class;
};
#define FITS_TYPE (fits_get_type ())
#define FITS (obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), FITS_TYPE, Fits))
GType fits_get_type (void) G_GNUC_CONST;
static GList * fits_query_procedures (GimpPlugIn *plug_in);
static GimpProcedure * fits_create_procedure (GimpPlugIn *plug_in,
const gchar *name);
static GimpValueArray * fits_load (GimpProcedure *procedure,
GimpRunMode run_mode,
GFile *file,
const GimpValueArray *args,
gpointer run_data);
static GimpValueArray * fits_save (GimpProcedure *procedure,
GimpRunMode run_mode,
GimpImage *image,
GimpDrawable *drawable,
GFile *file,
const GimpValueArray *args,
gpointer run_data);
static GimpImage * load_image (GFile *file,
GObject *config,
GimpRunMode run_mode,
GError **error);
static gint save_image (GFile *file,
GimpImage *image,
GimpDrawable *drawable,
GError **error);
static FitsHduList * create_fits_header (FitsFile *ofp,
guint width,
guint height,
guint channels,
guint bitpix);
static gint save_fits (FitsFile *ofp,
GimpImage *image,
GimpDrawable *drawable);
static GimpImage * create_new_image (GFile *file,
guint pagenum,
guint width,
guint height,
GimpImageBaseType itype,
GimpImageType dtype,
GimpPrecision iprecision,
GimpLayer **layer,
GeglBuffer **buffer);
static GimpImage * load_fits (GFile *file,
FitsFile *ifp,
GObject *config,
guint picnum,
guint ncompose);
static gboolean load_dialog (GimpProcedure *procedure,
GObject *config);
static void show_fits_errors (void);
G_DEFINE_TYPE (Fits, fits, GIMP_TYPE_PLUG_IN)
GIMP_MAIN (FITS_TYPE)
static void
fits_class_init (FitsClass *klass)
{
GimpPlugInClass *plug_in_class = GIMP_PLUG_IN_CLASS (klass);
plug_in_class->query_procedures = fits_query_procedures;
plug_in_class->create_procedure = fits_create_procedure;
}
static void
fits_init (Fits *fits)
{
}
static GList *
fits_query_procedures (GimpPlugIn *plug_in)
{
GList *list = NULL;
list = g_list_append (list, g_strdup (LOAD_PROC));
list = g_list_append (list, g_strdup (SAVE_PROC));
return list;
}
static GimpProcedure *
fits_create_procedure (GimpPlugIn *plug_in,
const gchar *name)
{
GimpProcedure *procedure = NULL;
if (! strcmp (name, LOAD_PROC))
{
procedure = gimp_load_procedure_new (plug_in, name,
GIMP_PDB_PROC_TYPE_PLUGIN,
fits_load, NULL, NULL);
gimp_procedure_set_menu_label (procedure,
N_("Flexible Image Transport System"));
gimp_procedure_set_documentation (procedure,
"Load file of the FITS file format",
"Load file of the FITS file format "
"(Flexible Image Transport System)",
name);
gimp_procedure_set_attribution (procedure,
"Peter Kirchgessner",
"Peter Kirchgessner (peter@kirchgessner.net)",
"1997");
gimp_file_procedure_set_mime_types (GIMP_FILE_PROCEDURE (procedure),
"image/x-fits");
gimp_file_procedure_set_extensions (GIMP_FILE_PROCEDURE (procedure),
"fit,fits");
gimp_file_procedure_set_magics (GIMP_FILE_PROCEDURE (procedure),
"0,string,SIMPLE");
GIMP_PROC_AUX_ARG_INT (procedure, "replace",
"Replace",
"Replacement for undefined pixels",
0, 255, 0,
G_PARAM_READWRITE);
GIMP_PROC_AUX_ARG_BOOLEAN (procedure, "use-data-min-max",
"Use data min max",
"Use DATAMIN/DATAMAX-scaling if possible",
FALSE,
G_PARAM_READWRITE);
GIMP_PROC_AUX_ARG_BOOLEAN (procedure, "compose",
"Compose",
"Image composing",
FALSE,
G_PARAM_READWRITE);
}
else if (! strcmp (name, SAVE_PROC))
{
procedure = gimp_save_procedure_new (plug_in, name,
GIMP_PDB_PROC_TYPE_PLUGIN,
fits_save, NULL, NULL);
gimp_procedure_set_image_types (procedure, "RGB, GRAY, INDEXED");
gimp_procedure_set_menu_label (procedure,
N_("Flexible Image Transport System"));
gimp_procedure_set_documentation (procedure,
"Export file in the FITS file format",
"FITS exporting handles all image "
"types except those with alpha channels.",
name);
gimp_procedure_set_attribution (procedure,
"Peter Kirchgessner",
"Peter Kirchgessner (peter@kirchgessner.net)",
"1997");
gimp_file_procedure_set_mime_types (GIMP_FILE_PROCEDURE (procedure),
"image/x-fits");
gimp_file_procedure_set_extensions (GIMP_FILE_PROCEDURE (procedure),
"fit,fits");
}
return procedure;
}
static GimpValueArray *
fits_load (GimpProcedure *procedure,
GimpRunMode run_mode,
GFile *file,
const GimpValueArray *args,
gpointer run_data)
{
GimpProcedureConfig *config;
GimpValueArray *return_vals;
GimpImage *image;
GError *error = NULL;
INIT_I18N ();
gegl_init (NULL, NULL);
config = gimp_procedure_create_config (procedure);
gimp_procedure_config_begin_run (config, NULL, run_mode, args);
if (run_mode == GIMP_RUN_INTERACTIVE)
{
if (! load_dialog (procedure, G_OBJECT (config)))
return gimp_procedure_new_return_values (procedure,
GIMP_PDB_CANCEL,
NULL);
}
image = load_image (file, G_OBJECT (config), run_mode, &error);
/* Write out error messages of FITS-Library */
show_fits_errors ();
if (! image)
return gimp_procedure_new_return_values (procedure,
GIMP_PDB_EXECUTION_ERROR,
error);
gimp_procedure_config_end_run (config, GIMP_PDB_SUCCESS);
g_object_unref (config);
return_vals = gimp_procedure_new_return_values (procedure,
GIMP_PDB_SUCCESS,
NULL);
GIMP_VALUES_SET_IMAGE (return_vals, 1, image);
return return_vals;
}
static GimpValueArray *
fits_save (GimpProcedure *procedure,
GimpRunMode run_mode,
GimpImage *image,
GimpDrawable *drawable,
GFile *file,
const GimpValueArray *args,
gpointer run_data)
{
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
GimpExportReturn export = GIMP_EXPORT_CANCEL;
GError *error = NULL;
INIT_I18N ();
gegl_init (NULL, NULL);
switch (run_mode)
{
case GIMP_RUN_INTERACTIVE:
case GIMP_RUN_WITH_LAST_VALS:
gimp_ui_init (PLUG_IN_BINARY);
export = gimp_export_image (&image, &drawable, "FITS",
GIMP_EXPORT_CAN_HANDLE_RGB |
GIMP_EXPORT_CAN_HANDLE_GRAY |
GIMP_EXPORT_CAN_HANDLE_INDEXED);
if (export == GIMP_EXPORT_CANCEL)
return gimp_procedure_new_return_values (procedure,
GIMP_PDB_CANCEL,
NULL);
break;
default:
break;
}
if (! save_image (file, image, drawable,
&error))
{
status = GIMP_PDB_EXECUTION_ERROR;
}
if (export == GIMP_EXPORT_EXPORT)
gimp_image_delete (image);
return gimp_procedure_new_return_values (procedure, status, error);
}
static GimpImage *
load_image (GFile *file,
GObject *config,
GimpRunMode run_mode,
GError **error)
{
GimpImage *image;
GimpImage **image_list;
GimpImage **nl;
guint picnum;
gint k, n_images, max_images, hdu_picnum;
gint compose;
gchar *filename;
FILE *fp;
FitsFile *ifp;
FitsHduList *hdu;
gboolean compose_arg;
g_object_get (config,
"compose", &compose_arg,
NULL);
filename = g_file_get_path (file);
fp = g_fopen (filename, "rb");
g_free (filename);
if (! fp)
{
g_set_error (error, G_FILE_ERROR, g_file_error_from_errno (errno),
_("Could not open '%s' for reading: %s"),
gimp_file_get_utf8_name (file), g_strerror (errno));
return NULL;
}
fclose (fp);
filename = g_file_get_path (file);
ifp = fits_open (filename, "r");
g_free (filename);
if (! ifp)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
"%s", _("Error during open of FITS file"));
return NULL;
}
if (ifp->n_pic <= 0)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
"%s", _("FITS file keeps no displayable images"));
fits_close (ifp);
return NULL;
}
image_list = g_new (GimpImage *, 10);
n_images = 0;
max_images = 10;
for (picnum = 1; picnum <= ifp->n_pic; )
{
/* Get image info to see if we can compose them */
hdu = fits_image_info (ifp, picnum, &hdu_picnum);
if (hdu == NULL)
break;
/* Get number of FITS-images to compose */
compose = (compose_arg && (hdu_picnum == 1) && (hdu->naxis == 3) &&
(hdu->naxisn[2] > 1) && (hdu->naxisn[2] <= 4));
if (compose)
compose = hdu->naxisn[2];
else
compose = 1; /* Load as GRAY */
image = load_fits (file, ifp, config, picnum, compose);
/* Write out error messages of FITS-Library */
show_fits_errors ();
if (! image)
break;
if (n_images == max_images)
{
nl = (GimpImage **) g_realloc (image_list,
(max_images + 10) * sizeof (GimpImage *));
if (nl == NULL)
break;
image_list = nl;
max_images += 10;
}
image_list[n_images++] = image;
picnum += compose;
}
/* Write out error messages of FITS-Library */
show_fits_errors ();
fits_close (ifp);
/* Display images in reverse order. The last will be displayed by GIMP itself*/
if (run_mode != GIMP_RUN_NONINTERACTIVE)
{
for (k = n_images-1; k >= 1; k--)
{
gimp_image_undo_enable (image_list[k]);
gimp_image_clean_all (image_list[k]);
gimp_display_new (image_list[k]);
}
}
image = (n_images > 0) ? image_list[0] : NULL;
g_free (image_list);
return image;
}
static gint
save_image (GFile *file,
GimpImage *image,
GimpDrawable *drawable,
GError **error)
{
gchar *filename;
FitsFile *ofp;
GimpImageType drawable_type;
gint retval;
drawable_type = gimp_drawable_type (drawable);
/* Make sure we're not exporting an image with an alpha channel */
if (gimp_drawable_has_alpha (drawable))
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
"%s",
_("FITS export cannot handle images with alpha channels"));
return FALSE;
}
switch (drawable_type)
{
case GIMP_INDEXED_IMAGE: case GIMP_INDEXEDA_IMAGE:
case GIMP_GRAY_IMAGE: case GIMP_GRAYA_IMAGE:
case GIMP_RGB_IMAGE: case GIMP_RGBA_IMAGE:
break;
default:
g_message (_("Cannot operate on unknown image types."));
return (FALSE);
break;
}
gimp_progress_init_printf (_("Exporting '%s'"),
gimp_file_get_utf8_name (file));
/* Open the output file. */
filename = g_file_get_path (file);
ofp = fits_open (filename, "w");
g_free (filename);
if (! ofp)
{
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));
return (FALSE);
}
retval = save_fits (ofp, image, drawable);
fits_close (ofp);
return retval;
}
/* Create an image. Sets layer_ID, drawable and rgn. Returns image_ID */
static GimpImage *
create_new_image (GFile *file,
guint pagenum,
guint width,
guint height,
GimpImageBaseType itype,
GimpImageType dtype,
GimpPrecision iprecision,
GimpLayer **layer,
GeglBuffer **buffer)
{
GimpImage *image;
GFile *new_file;
gchar *uri;
gchar *new_uri;
image = gimp_image_new_with_precision (width, height, itype, iprecision);
uri = g_file_get_uri (file);
new_uri = g_strdup_printf ("%s-img%d", uri, pagenum);
g_free (uri);
new_file = g_file_new_for_uri (new_uri);
g_free (new_uri);
gimp_image_set_file (image, new_file);
g_object_unref (new_file);
gimp_image_undo_disable (image);
*layer = gimp_layer_new (image, _("Background"), width, height,
dtype, 100,
gimp_image_get_default_new_layer_mode (image));
gimp_image_insert_layer (image, *layer, NULL, 0);
*buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (*layer));
return image;
}
/* Load FITS image. ncompose gives the number of FITS-images which have
* to be composed together. This will result in different GIMP image types:
* 1: GRAY, 2: GRAYA, 3: RGB, 4: RGBA
*/
static GimpImage *
load_fits (GFile *file,
FitsFile *ifp,
GObject *config,
guint picnum,
guint ncompose)
{
register guchar *dest, *src;
guchar *data, *data_end, *linebuf;
int width, height, tile_height, scan_lines;
int i, j, max_scan;
double a, b;
GimpImage *image;
GimpLayer *layer;
GeglBuffer *buffer;
GimpImageBaseType itype;
GimpImageType dtype;
GimpPrecision iprecision;
gint err = 0;
FitsHduList *hdulist;
FitsPixTransform trans;
double datamax, replacetransform;
const Babl *type, *format;
gint replace;
gboolean use_datamin;
g_object_get (config,
"replace", &replace,
"use-data-min-max", &use_datamin,
NULL);
hdulist = fits_seek_image (ifp, (int)picnum);
if (hdulist == NULL)
return NULL;
width = hdulist->naxisn[0]; /* Set the size of the FITS image */
height = hdulist->naxisn[1];
switch (hdulist->bitpix)
{
case 8:
iprecision = GIMP_PRECISION_U8_NON_LINEAR;
type = babl_type ("u8");
datamax = 255.0;
replacetransform = 1.0;
break;
case 16:
iprecision = GIMP_PRECISION_U16_NON_LINEAR; /* FIXME precision */
type = babl_type ("u16");
datamax = 65535.0;
replacetransform = 257;
break;
case 32:
iprecision = GIMP_PRECISION_U32_LINEAR;
type = babl_type ("u32");
datamax = 4294967295.0;
replacetransform = 16843009;
break;
case -32:
iprecision = GIMP_PRECISION_FLOAT_LINEAR;
type = babl_type ("float");
datamax = 1.0;
replacetransform = 1.0 / 255.0;
break;
case -64:
iprecision = GIMP_PRECISION_DOUBLE_LINEAR;
type = babl_type ("double");
datamax = 1.0;
replacetransform = 1.0 / 255.0;
break;
default:
return NULL;
}
if (ncompose == 2)
{
itype = GIMP_GRAY;
dtype = GIMP_GRAYA_IMAGE;
format = babl_format_new (babl_model ("Y'A"),
type,
babl_component ("Y'"),
babl_component ("A"),
NULL);
}
else if (ncompose == 3)
{
itype = GIMP_RGB;
dtype = GIMP_RGB_IMAGE;
format = babl_format_new (babl_model ("R'G'B'"),
type,
babl_component ("R'"),
babl_component ("G'"),
babl_component ("B'"),
NULL);
}
else if (ncompose == 4)
{
itype = GIMP_RGB;
dtype = GIMP_RGBA_IMAGE;
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
{
ncompose = 1;
itype = GIMP_GRAY;
dtype = GIMP_GRAY_IMAGE;
format = babl_format_new (babl_model ("Y'"),
type,
babl_component ("Y'"),
NULL);
}
image = create_new_image (file, picnum, width, height,
itype, dtype, iprecision,
&layer, &buffer);
tile_height = gimp_tile_height ();
data = g_malloc (tile_height * width * ncompose * hdulist->bpp);
if (data == NULL)
return NULL;
data_end = data + tile_height * width * ncompose * hdulist->bpp;
/* If the transformation from pixel value to data value has been
* specified, use it
*/
if (use_datamin &&
hdulist->used.datamin && hdulist->used.datamax &&
hdulist->used.bzero && hdulist->used.bscale)
{
a = (hdulist->datamin - hdulist->bzero) / hdulist->bscale;
b = (hdulist->datamax - hdulist->bzero) / hdulist->bscale;
if (a < b)
trans.pixmin = a, trans.pixmax = b;
else
trans.pixmin = b, trans.pixmax = a;
}
else
{
trans.pixmin = hdulist->pixmin;
trans.pixmax = hdulist->pixmax;
}
trans.datamin = 0.0;
trans.datamax = datamax;
trans.replacement = replace * replacetransform;
trans.dsttyp = 'k';
/* FITS stores images with bottom row first. Therefore we have to
* fill the image from bottom to top.
*/
if (ncompose == 1)
{
dest = data + tile_height * width * hdulist->bpp;
scan_lines = 0;
for (i = 0; i < height; i++)
{
/* Read FITS line */
dest -= width * hdulist->bpp;
if (fits_read_pixel (ifp, hdulist, width, &trans, dest) != width)
{
err = 1;
break;
}
scan_lines++;
if ((i % 20) == 0)
gimp_progress_update ((gdouble) (i + 1) / (gdouble) height);
if ((scan_lines == tile_height) || ((i + 1) == height))
{
gegl_buffer_set (buffer,
GEGL_RECTANGLE (0, height - i - 1,
width, scan_lines), 0,
format, dest, GEGL_AUTO_ROWSTRIDE);
scan_lines = 0;
dest = data + tile_height * width * hdulist->bpp;
}
if (err)
break;
}
}
else /* multiple images to compose */
{
gint channel;
linebuf = g_malloc (width * hdulist->bpp);
if (linebuf == NULL)
return NULL;
for (channel = 0; channel < ncompose; channel++)
{
dest = data + tile_height * width * hdulist->bpp * ncompose + channel * hdulist->bpp;
scan_lines = 0;
for (i = 0; i < height; i++)
{
if ((channel > 0) && ((i % tile_height) == 0))
{
/* Reload a region for follow up channels */
max_scan = tile_height;
if (i + tile_height > height)
max_scan = height - i;
gegl_buffer_get (buffer,
GEGL_RECTANGLE (0, height - i - max_scan,
width, max_scan), 1.0,
format, data_end - max_scan * width * hdulist->bpp * ncompose,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
}
/* Read FITS scanline */
dest -= width * ncompose * hdulist->bpp;
if (fits_read_pixel (ifp, hdulist, width, &trans, linebuf) != width)
{
err = 1;
break;
}
j = width;
src = linebuf;
while (j--)
{
memcpy (dest, src, hdulist->bpp);
src += hdulist->bpp;
dest += ncompose * hdulist->bpp;
}
dest -= width * ncompose * hdulist->bpp;
scan_lines++;
if ((i % 20) == 0)
gimp_progress_update ((gdouble) (channel * height + i + 1) /
(gdouble) (height * ncompose));
if ((scan_lines == tile_height) || ((i + 1) == height))
{
gegl_buffer_set (buffer,
GEGL_RECTANGLE (0, height - i - 1,
width, scan_lines), 0,
format, dest - channel * hdulist->bpp, GEGL_AUTO_ROWSTRIDE);
scan_lines = 0;
dest = data + tile_height * width * ncompose * hdulist->bpp + channel * hdulist->bpp;
}
if (err)
break;
}
}
g_free (linebuf);
}
g_free (data);
if (err)
g_message (_("EOF encountered on reading"));
g_object_unref (buffer);
gimp_progress_update (1.0);
return err ? NULL : image;
}
static FitsHduList *
create_fits_header (FitsFile *ofp,
guint width,
guint height,
guint channels,
guint bitpix)
{
FitsHduList *hdulist;
gint print_ctype3 = 0; /* The CTYPE3-card may not be FITS-conforming */
static const char *ctype3_card[] =
{
NULL, NULL, NULL, /* bpp = 0: no additional card */
"COMMENT Image type within GIMP: GIMP_GRAY_IMAGE",
NULL,
NULL,
"COMMENT Image type within GIMP: GIMP_GRAYA_IMAGE (gray with alpha channel)",
"COMMENT Sequence for NAXIS3 : GRAY, ALPHA",
"CTYPE3 = 'GRAYA ' / GRAY IMAGE WITH ALPHA CHANNEL",
"COMMENT Image type within GIMP: GIMP_RGB_IMAGE",
"COMMENT Sequence for NAXIS3 : RED, GREEN, BLUE",
"CTYPE3 = 'RGB ' / RGB IMAGE",
"COMMENT Image type within GIMP: GIMP_RGBA_IMAGE (rgb with alpha channel)",
"COMMENT Sequence for NAXIS3 : RED, GREEN, BLUE, ALPHA",
"CTYPE3 = 'RGBA ' / RGB IMAGE WITH ALPHA CHANNEL"
};
hdulist = fits_add_hdu (ofp);
if (hdulist == NULL)
return NULL;
hdulist->used.simple = 1;
hdulist->bitpix = bitpix;
hdulist->naxis = (channels == 1) ? 2 : 3;
hdulist->naxisn[0] = width;
hdulist->naxisn[1] = height;
hdulist->naxisn[2] = channels;
hdulist->used.datamin = 1;
hdulist->datamin = 0.0;
hdulist->used.datamax = 1;
hdulist->used.bzero = 1;
hdulist->bzero = 0.0;
hdulist->used.bscale = 1;
hdulist->bscale = 1.0;
switch (bitpix)
{
case 8:
hdulist->datamax = 255;
break;
case 16:
hdulist->datamax = 65535;
break;
case 32:
hdulist->datamax = 4294967295.0; /* .0 to silence gcc */
break;
case -32:
hdulist->datamax = 1.0;
break;
case -64:
hdulist->datamax = 1.0;
break;
default:
return NULL;
}
fits_add_card (hdulist, "");
fits_add_card (hdulist,
"HISTORY THIS FITS FILE WAS GENERATED BY GIMP USING FITSRW");
fits_add_card (hdulist, "");
fits_add_card (hdulist,
"COMMENT FitsRW is (C) Peter Kirchgessner (peter@kirchgessner.net), but available");
fits_add_card (hdulist,
"COMMENT under the GNU general public licence.");
fits_add_card (hdulist,
"COMMENT For sources see http://www.kirchgessner.net");
fits_add_card (hdulist, "");
fits_add_card (hdulist, ctype3_card[channels * 3]);
if (ctype3_card[channels * 3 + 1] != NULL)
fits_add_card (hdulist, ctype3_card[channels * 3 + 1]);
if (print_ctype3 && (ctype3_card[channels * 3 + 2] != NULL))
fits_add_card (hdulist, ctype3_card[channels * 3 + 2]);
fits_add_card (hdulist, "");
return hdulist;
}
/* Save direct colors (GRAY, GRAYA, RGB, RGBA) */
static gint
save_fits (FitsFile *ofp,
GimpImage *image,
GimpDrawable *drawable)
{
gint height, width, i, j, channel, channelnum;
gint tile_height, bpp, bpsl, bitpix, bpc;
long nbytes;
guchar *data, *src;
GeglBuffer *buffer;
const Babl *format, *type;
FitsHduList *hdu;
buffer = gimp_drawable_get_buffer (drawable);
width = gegl_buffer_get_width (buffer);
height = gegl_buffer_get_height (buffer);
format = gegl_buffer_get_format (buffer);
type = babl_format_get_type (format, 0);
if (type == babl_type ("u8"))
{
bitpix = 8;
}
else if (type == babl_type ("u16"))
{
bitpix = 16;
}
else if (type == babl_type ("u32"))
{
bitpix = 32;
}
else if (type == babl_type ("half"))
{
bitpix = -32;
type = babl_type ("float");
}
else if (type == babl_type ("float"))
{
bitpix = -32;
}
else if (type == babl_type ("double"))
{
bitpix = -64;
}
else
{
return FALSE;
}
switch (gimp_drawable_type (drawable))
{
case GIMP_GRAY_IMAGE:
format = babl_format_new (babl_model ("Y'"),
type,
babl_component ("Y'"),
NULL);
break;
case GIMP_GRAYA_IMAGE:
format = babl_format_new (babl_model ("Y'A"),
type,
babl_component ("Y'"),
babl_component ("A"),
NULL);
break;
case GIMP_RGB_IMAGE:
case GIMP_INDEXED_IMAGE:
format = babl_format_new (babl_model ("R'G'B'"),
type,
babl_component ("R'"),
babl_component ("G'"),
babl_component ("B'"),
NULL);
break;
case GIMP_RGBA_IMAGE:
case GIMP_INDEXEDA_IMAGE:
format = babl_format_new (babl_model ("R'G'B'A"),
type,
babl_component ("R'"),
babl_component ("G'"),
babl_component ("B'"),
babl_component ("A"),
NULL);
break;
}
channelnum = babl_format_get_n_components (format);
bpp = babl_format_get_bytes_per_pixel (format);
bpc = bpp / channelnum; /* Bytes per channel */
bpsl = width * bpp; /* Bytes per scanline */
tile_height = gimp_tile_height ();
/* allocate a buffer for retrieving information from the pixel region */
src = data = (guchar *) g_malloc (width * height * bpp);
hdu = create_fits_header (ofp, width, height, channelnum, bitpix);
if (hdu == NULL)
return FALSE;
if (fits_write_header (ofp, hdu) < 0)
return FALSE;
nbytes = 0;
for (channel = 0; channel < channelnum; channel++)
{
for (i = 0; i < height; i++)
{
if ((i % tile_height) == 0)
{
gint scan_lines;
scan_lines = (i + tile_height-1 < height) ?
tile_height : (height - i);
gegl_buffer_get (buffer,
GEGL_RECTANGLE (0, height - i - scan_lines,
width, scan_lines), 1.0,
format, data,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
src = data + bpsl * (scan_lines - 1) + channel * bpc;
}
if (channelnum == 1 && bitpix == 8) /* One channel and 8 bit? Write the scanline */
{
fwrite (src, bpc, width, ofp->fp);
src += bpsl;
}
else /* Multiple channels or high bit depth */
{
/* Write out bytes for current channel */
/* FIXME: Don't assume a little endian arch */
switch (bitpix)
{
case 8:
for (j = 0; j < width; j++)
{
putc (*src, ofp->fp);
src += bpp;
}
break;
case 16:
for (j = 0; j < width; j++)
{
*((guint16*)src) += 32768;
putc (*(src + 1), ofp->fp);
putc (*(src + 0), ofp->fp);
src += bpp;
}
break;
case 32:
for (j = 0; j < width; j++)
{
*((guint32*)src) += 2147483648.0; /* .0 to silence gcc */
putc (*(src + 3), ofp->fp);
putc (*(src + 2), ofp->fp);
putc (*(src + 1), ofp->fp);
putc (*(src + 0), ofp->fp);
src += bpp;
}
break;
case -32:
for (j = 0; j < width; j++)
{
putc (*(src + 3), ofp->fp);
putc (*(src + 2), ofp->fp);
putc (*(src + 1), ofp->fp);
putc (*(src + 0), ofp->fp);
src += bpp;
}
break;
case -64:
for (j = 0; j < width; j++)
{
putc (*(src + 7), ofp->fp);
putc (*(src + 6), ofp->fp);
putc (*(src + 5), ofp->fp);
putc (*(src + 4), ofp->fp);
putc (*(src + 3), ofp->fp);
putc (*(src + 2), ofp->fp);
putc (*(src + 1), ofp->fp);
putc (*(src + 0), ofp->fp);
src += bpp;
}
break;
default:
return FALSE;
}
}
nbytes += width * bpc;
src -= 2 * bpsl;
if ((i % 20) == 0)
gimp_progress_update ((gdouble) (i + channel * height) /
(gdouble) (height * channelnum));
}
}
nbytes = nbytes % FITS_RECORD_SIZE;
if (nbytes)
{
while (nbytes++ < FITS_RECORD_SIZE)
putc (0, ofp->fp);
}
g_free (data);
g_object_unref (buffer);
gimp_progress_update (1.0);
if (ferror (ofp->fp))
{
g_message (_("Write error occurred"));
return FALSE;
}
return TRUE;
}
/* Load interface functions */
static gboolean
load_dialog (GimpProcedure *procedure,
GObject *config)
{
GtkWidget *dialog;
GtkWidget *vbox;
GtkListStore *store;
GtkWidget *frame;
gboolean run;
gimp_ui_init (PLUG_IN_BINARY);
dialog = gimp_procedure_dialog_new (procedure,
GIMP_PROCEDURE_CONFIG (config),
_("Open FITS File"));
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dialog))),
vbox, TRUE, TRUE, 0);
gtk_widget_show (vbox);
store = gimp_int_store_new (_("_Black"), 0,
_("_White"), 255,
NULL);
frame = gimp_prop_int_radio_frame_new (config, "replace",
_("Replacement for undefined pixels"),
GIMP_INT_STORE (store));
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
frame = gimp_prop_boolean_radio_frame_new (config, "use-data-min-max",
_("Pixel value scaling"),
_("By _DATAMIN/DATAMAX"),
_("_Automatic"));
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
frame = gimp_prop_boolean_radio_frame_new (config, "compose",
_("Image Composing"),
"NA_XIS=3, NAXIS3=2,...,4",
C_("composing", "_None"));
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (dialog);
run = gimp_procedure_dialog_run (GIMP_PROCEDURE_DIALOG (dialog));
gtk_widget_destroy (dialog);
return run;
}
static void
show_fits_errors (void)
{
const gchar *msg;
/* Write out error messages of FITS-Library */
while ((msg = fits_get_error ()) != NULL)
g_message ("%s", msg);
}
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