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

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/*
* SGI image file plug-in for GIMP.
*
* Copyright 1997-1998 Michael Sweet (mike@easysw.com)
*
* 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 <http://www.gnu.org/licenses/>.
*
* Contents:
*
* main() - Main entry - just call gimp_main()...
* query() - Respond to a plug-in query...
* run() - Run the plug-in...
* load_image() - Load a PNG image into a new image window.
* save_image() - Export the specified image to a PNG file.
* save_ok_callback() - Destroy the export dialog and export the image.
* save_dialog() - Pop up the export dialog.
*
*/
#include "config.h"
#include <string.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "sgi-lib.h"
#include "libgimp/stdplugins-intl.h"
/*
* Constants...
*/
#define LOAD_PROC "file-sgi-load"
#define SAVE_PROC "file-sgi-save"
#define PLUG_IN_BINARY "file-sgi"
#define PLUG_IN_ROLE "gimp-file-sgi"
#define PLUG_IN_VERSION "1.1.1 - 17 May 1998"
/*
* Local functions...
*/
static void query (void);
static void run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static gint32 load_image (const gchar *filename,
GError **error);
static gint save_image (const gchar *filename,
gint32 image_ID,
gint32 drawable_ID,
GError **error);
static gboolean save_dialog (void);
/*
* Globals...
*/
const GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
static gint compression = SGI_COMP_RLE;
MAIN ()
static void
query (void)
{
static const GimpParamDef load_args[] =
{
{ GIMP_PDB_INT32, "run-mode", "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }" },
{ GIMP_PDB_STRING, "filename", "The name of the file to load" },
{ GIMP_PDB_STRING, "raw-filename", "The name of the file to load" },
};
static const GimpParamDef load_return_vals[] =
{
{ GIMP_PDB_IMAGE, "image", "Output image" },
};
static const GimpParamDef 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 export" },
{ GIMP_PDB_STRING, "filename", "The name of the file to export the image in" },
{ GIMP_PDB_STRING, "raw-filename", "The name of the file to export the image in" },
{ GIMP_PDB_INT32, "compression", "Compression level (0 = none, 1 = RLE, 2 = ARLE)" }
};
gimp_install_procedure (LOAD_PROC,
"Loads files in SGI image file format",
"This plug-in loads SGI image files.",
"Michael Sweet <mike@easysw.com>",
"Copyright 1997-1998 by Michael Sweet",
PLUG_IN_VERSION,
N_("Silicon Graphics IRIS image"),
NULL,
GIMP_PLUGIN,
G_N_ELEMENTS (load_args),
G_N_ELEMENTS (load_return_vals),
load_args,
load_return_vals);
gimp_register_file_handler_mime (LOAD_PROC, "image/x-sgi");
gimp_register_magic_load_handler (LOAD_PROC,
"sgi,rgb,rgba,bw,icon",
"",
"0,short,474");
gimp_install_procedure (SAVE_PROC,
"Exports files in SGI image file format",
"This plug-in exports SGI image files.",
"Michael Sweet <mike@easysw.com>",
"Copyright 1997-1998 by Michael Sweet",
PLUG_IN_VERSION,
N_("Silicon Graphics IRIS image"),
"RGB*, GRAY*, INDEXED*",
GIMP_PLUGIN,
G_N_ELEMENTS (save_args),
0,
save_args,
NULL);
gimp_register_file_handler_mime (SAVE_PROC, "image/x-sgi");
gimp_register_save_handler (SAVE_PROC, "sgi,rgb,rgba,bw,icon", "");
}
static void
run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[2];
GimpRunMode run_mode;
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
gint32 image_ID;
gint32 drawable_ID;
GimpExportReturn export = GIMP_EXPORT_CANCEL;
GError *error = NULL;
INIT_I18N ();
gegl_init (NULL, NULL);
run_mode = param[0].data.d_int32;
*nreturn_vals = 1;
*return_vals = values;
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = GIMP_PDB_EXECUTION_ERROR;
if (strcmp (name, LOAD_PROC) == 0)
{
image_ID = load_image (param[1].data.d_string, &error);
if (image_ID != -1)
{
*nreturn_vals = 2;
values[1].type = GIMP_PDB_IMAGE;
values[1].data.d_image = image_ID;
}
else
{
status = GIMP_PDB_EXECUTION_ERROR;
}
}
else if (strcmp (name, SAVE_PROC) == 0)
{
image_ID = param[1].data.d_int32;
drawable_ID = param[2].data.d_int32;
/* 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_ID, &drawable_ID, "SGI",
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;
}
switch (run_mode)
{
case GIMP_RUN_INTERACTIVE:
/*
* Possibly retrieve data...
*/
gimp_get_data (SAVE_PROC, &compression);
/*
* Then acquire information with a dialog...
*/
if (!save_dialog ())
status = GIMP_PDB_CANCEL;
break;
case GIMP_RUN_NONINTERACTIVE:
/*
* Make sure all the arguments are there!
*/
if (nparams != 6)
{
status = GIMP_PDB_CALLING_ERROR;
}
else
{
compression = param[5].data.d_int32;
if (compression < 0 || compression > 2)
status = GIMP_PDB_CALLING_ERROR;
};
break;
case GIMP_RUN_WITH_LAST_VALS:
/*
* Possibly retrieve data...
*/
gimp_get_data (SAVE_PROC, &compression);
break;
default:
break;
};
if (status == GIMP_PDB_SUCCESS)
{
if (save_image (param[3].data.d_string, image_ID, drawable_ID,
&error))
{
gimp_set_data (SAVE_PROC, &compression, sizeof (compression));
}
else
{
status = GIMP_PDB_EXECUTION_ERROR;
}
}
if (export == GIMP_EXPORT_EXPORT)
gimp_image_delete (image_ID);
}
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;
}
/*
* 'load_image()' - Load a PNG image into a new image window.
*/
static gint32
load_image (const gchar *filename,
GError **error)
{
gint i, /* Looping var */
x, /* Current X coordinate */
y, /* Current Y coordinate */
image_type, /* Type of image */
layer_type, /* Type of drawable/layer */
tile_height, /* Height of tile in GIMP */
count, /* Count of rows to put in image */
bytes; /* Number of channels to use */
sgi_t *sgip; /* File pointer */
gint32 image, /* Image */
layer; /* Layer */
GeglBuffer *buffer; /* Buffer for layer */
guchar **pixels, /* Pixel rows */
*pptr; /* Current pixel */
gushort **rows; /* SGI image data */
/*
* Open the file for reading...
*/
gimp_progress_init_printf (_("Opening '%s'"),
gimp_filename_to_utf8 (filename));
sgip = sgiOpen (filename, SGI_READ, 0, 0, 0, 0, 0);
if (sgip == NULL)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Could not open '%s' for reading."),
gimp_filename_to_utf8 (filename));
return -1;
};
/*
* Get the image dimensions and create the image...
*/
/* Sanitize dimensions (note that they are unsigned short and can
* thus never be larger than GIMP_MAX_IMAGE_SIZE
*/
if (sgip->xsize == 0 /*|| sgip->xsize > GIMP_MAX_IMAGE_SIZE*/)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Invalid width: %hu"), sgip->xsize);
return -1;
}
if (sgip->ysize == 0 /*|| sgip->ysize > GIMP_MAX_IMAGE_SIZE*/)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Invalid height: %hu"), sgip->ysize);
return -1;
}
if (sgip->zsize == 0 /*|| sgip->zsize > GIMP_MAX_IMAGE_SIZE*/)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Invalid number of channels: %hu"), sgip->zsize);
return -1;
}
bytes = sgip->zsize;
switch (sgip->zsize)
{
case 1 : /* Grayscale */
image_type = GIMP_GRAY;
layer_type = GIMP_GRAY_IMAGE;
break;
case 2 : /* Grayscale + alpha */
image_type = GIMP_GRAY;
layer_type = GIMP_GRAYA_IMAGE;
break;
case 3 : /* RGB */
image_type = GIMP_RGB;
layer_type = GIMP_RGB_IMAGE;
break;
case 4 : /* RGBA */
image_type = GIMP_RGB;
layer_type = GIMP_RGBA_IMAGE;
break;
default:
image_type = GIMP_RGB;
layer_type = GIMP_RGBA_IMAGE;
bytes = 4;
break;
}
image = gimp_image_new (sgip->xsize, sgip->ysize, image_type);
if (image == -1)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
"Could not allocate new image: %s",
gimp_get_pdb_error());
return -1;
}
gimp_image_set_filename (image, filename);
/*
* Create the "background" layer to hold the image...
*/
layer = gimp_layer_new (image, _("Background"), sgip->xsize, sgip->ysize,
layer_type,
100,
gimp_image_get_default_new_layer_mode (image));
gimp_image_insert_layer (image, layer, -1, 0);
/*
* Get the drawable and set the pixel region for our load...
*/
buffer = gimp_drawable_get_buffer (layer);
/*
* Temporary buffers...
*/
tile_height = gimp_tile_height ();
pixels = g_new (guchar *, tile_height);
pixels[0] = g_new (guchar, ((gsize) tile_height) * sgip->xsize * bytes);
for (i = 1; i < tile_height; i ++)
pixels[i] = pixels[0] + sgip->xsize * bytes * i;
rows = g_new (unsigned short *, sgip->zsize);
rows[0] = g_new (unsigned short, ((gsize) sgip->xsize) * sgip->zsize);
for (i = 1; i < sgip->zsize; i ++)
rows[i] = rows[0] + i * sgip->xsize;
/*
* Load the image...
*/
for (y = 0, count = 0;
y < sgip->ysize;
y ++, count ++)
{
if (count >= tile_height)
{
gegl_buffer_set (buffer, GEGL_RECTANGLE (0, y - count,
sgip->xsize, count), 0,
NULL, pixels[0], GEGL_AUTO_ROWSTRIDE);
count = 0;
gimp_progress_update ((double) y / (double) sgip->ysize);
}
for (i = 0; i < sgip->zsize; i ++)
if (sgiGetRow (sgip, rows[i], sgip->ysize - 1 - y, i) < 0)
printf("sgiGetRow(sgip, rows[i], %d, %d) failed!\n",
sgip->ysize - 1 - y, i);
if (sgip->bpp == 1)
{
/*
* 8-bit (unsigned) pixels...
*/
for (x = 0, pptr = pixels[count]; x < sgip->xsize; x ++)
for (i = 0; i < bytes; i ++, pptr ++)
*pptr = rows[i][x];
}
else
{
/*
* 16-bit (unsigned) pixels...
*/
for (x = 0, pptr = pixels[count]; x < sgip->xsize; x ++)
for (i = 0; i < bytes; i ++, pptr ++)
*pptr = rows[i][x] >> 8;
}
}
/*
* Do the last n rows (count always > 0)
*/
gegl_buffer_set (buffer, GEGL_RECTANGLE (0, y - count,
sgip->xsize, count), 0,
NULL, pixels[0], GEGL_AUTO_ROWSTRIDE);
/*
* Done with the file...
*/
sgiClose (sgip);
g_free (pixels[0]);
g_free (pixels);
g_free (rows[0]);
g_free (rows);
g_object_unref (buffer);
gimp_progress_update (1.0);
return image;
}
/*
* 'save_image()' - Save the specified image to a SGI file.
*/
static gint
save_image (const gchar *filename,
gint32 image_ID,
gint32 drawable_ID,
GError **error)
{
gint i, j, /* Looping var */
x, /* Current X coordinate */
y, /* Current Y coordinate */
width, /* Drawable width */
height, /* Drawable height */
tile_height, /* Height of tile in GIMP */
count, /* Count of rows to put in image */
zsize; /* Number of channels in file */
sgi_t *sgip; /* File pointer */
GeglBuffer *buffer; /* Buffer for layer */
const Babl *format;
guchar **pixels, /* Pixel rows */
*pptr; /* Current pixel */
gushort **rows; /* SGI image data */
/*
* Get the drawable for the current image...
*/
width = gimp_drawable_width (drawable_ID);
height = gimp_drawable_height (drawable_ID);
buffer = gimp_drawable_get_buffer (drawable_ID);
switch (gimp_drawable_type (drawable_ID))
{
case GIMP_GRAY_IMAGE:
zsize = 1;
format = babl_format ("Y' u8");
break;
case GIMP_GRAYA_IMAGE:
zsize = 2;
format = babl_format ("Y'A u8");
break;
case GIMP_RGB_IMAGE:
case GIMP_INDEXED_IMAGE:
zsize = 3;
format = babl_format ("R'G'B' u8");
break;
case GIMP_RGBA_IMAGE:
case GIMP_INDEXEDA_IMAGE:
format = babl_format ("R'G'B'A u8");
zsize = 4;
break;
default:
return FALSE;
}
/*
* Open the file for writing...
*/
gimp_progress_init_printf (_("Exporting '%s'"),
gimp_filename_to_utf8 (filename));
sgip = sgiOpen (filename, SGI_WRITE, compression, 1,
width, height, zsize);
if (sgip == NULL)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Could not open '%s' for writing."),
gimp_filename_to_utf8 (filename));
return FALSE;
};
/*
* Allocate memory for "tile_height" rows...
*/
tile_height = gimp_tile_height ();
pixels = g_new (guchar *, tile_height);
pixels[0] = g_new (guchar, ((gsize) tile_height) * width * zsize);
for (i = 1; i < tile_height; i ++)
pixels[i]= pixels[0] + width * zsize * i;
rows = g_new (gushort *, sgip->zsize);
rows[0] = g_new (gushort, ((gsize) sgip->xsize) * sgip->zsize);
for (i = 1; i < sgip->zsize; i ++)
rows[i] = rows[0] + i * sgip->xsize;
/*
* Save the image...
*/
for (y = 0; y < height; y += count)
{
/*
* Grab more pixel data...
*/
if ((y + tile_height) >= height)
count = height - y;
else
count = tile_height;
gegl_buffer_get (buffer, GEGL_RECTANGLE (0, y, width, count), 1.0,
format, pixels[0],
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
/*
* Convert to shorts and write each color plane separately...
*/
for (i = 0, pptr = pixels[0]; i < count; i ++)
{
for (x = 0; x < width; x ++)
for (j = 0; j < zsize; j ++, pptr ++)
rows[j][x] = *pptr;
for (j = 0; j < zsize; j ++)
sgiPutRow (sgip, rows[j], height - 1 - y - i, j);
};
gimp_progress_update ((double) y / (double) height);
}
/*
* Done with the file...
*/
sgiClose (sgip);
g_free (pixels[0]);
g_free (pixels);
g_free (rows[0]);
g_free (rows);
g_object_unref (buffer);
gimp_progress_update (1.0);
return TRUE;
}
static gboolean
save_dialog (void)
{
GtkWidget *dialog;
GtkWidget *frame;
gboolean run;
dialog = gimp_export_dialog_new (_("SGI"), PLUG_IN_BINARY, SAVE_PROC);
frame = gimp_int_radio_group_new (TRUE, _("Compression type"),
G_CALLBACK (gimp_radio_button_update),
&compression, compression,
_("No compression"),
SGI_COMP_NONE, NULL,
_("RLE compression"),
SGI_COMP_RLE, NULL,
_("Aggressive RLE\n(not supported by SGI)"),
SGI_COMP_ARLE, NULL,
NULL);
gtk_container_set_border_width (GTK_CONTAINER (frame), 12);
gtk_box_pack_start (GTK_BOX (gimp_export_dialog_get_content_area (dialog)),
frame, TRUE, TRUE, 0);
gtk_widget_show (frame);
gtk_widget_show (dialog);
run = (gimp_dialog_run (GIMP_DIALOG (dialog)) == GTK_RESPONSE_OK);
gtk_widget_destroy (dialog);
return run;
}
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