AlderconeStudio/PIKApp
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PIKApp
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PIKApp/plug-ins/file-sgi/sgi.c

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/*
* SGI image file plug-in for PIKA.
*
* 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 <https://www.gnu.org/licenses/>.
*
* Contents:
*
* main() - Main entry - just call pika_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 <libpika/pika.h>
#include <libpika/pikaui.h>
#include "sgi-lib.h"
#include "libpika/stdplugins-intl.h"
#define LOAD_PROC "file-sgi-load"
#define SAVE_PROC "file-sgi-save"
#define PLUG_IN_BINARY "file-sgi"
#define PLUG_IN_VERSION "1.1.1 - 17 May 1998"
typedef struct _Sgi Sgi;
typedef struct _SgiClass SgiClass;
struct _Sgi
{
PikaPlugIn parent_instance;
};
struct _SgiClass
{
PikaPlugInClass parent_class;
};
#define SGI_TYPE (sgi_get_type ())
#define SGI(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), SGI_TYPE, Sgi))
GType sgi_get_type (void) G_GNUC_CONST;
static GList * sgi_query_procedures (PikaPlugIn *plug_in);
static PikaProcedure * sgi_create_procedure (PikaPlugIn *plug_in,
const gchar *name);
static PikaValueArray * sgi_load (PikaProcedure *procedure,
PikaRunMode run_mode,
GFile *file,
PikaMetadata *metadata,
PikaMetadataLoadFlags *flags,
PikaProcedureConfig *config,
gpointer run_data);
static PikaValueArray * sgi_save (PikaProcedure *procedure,
PikaRunMode run_mode,
PikaImage *image,
gint n_drawables,
PikaDrawable **drawables,
GFile *file,
PikaMetadata *metadata,
PikaProcedureConfig *config,
gpointer run_data);
static PikaImage * load_image (GFile *file,
GError **error);
static gint save_image (GFile *file,
PikaImage *image,
PikaDrawable *drawable,
GObject *config,
GError **error);
static gboolean save_dialog (PikaProcedure *procedure,
GObject *config,
PikaImage *image);
G_DEFINE_TYPE (Sgi, sgi, PIKA_TYPE_PLUG_IN)
PIKA_MAIN (SGI_TYPE)
DEFINE_STD_SET_I18N
static void
sgi_class_init (SgiClass *klass)
{
PikaPlugInClass *plug_in_class = PIKA_PLUG_IN_CLASS (klass);
plug_in_class->query_procedures = sgi_query_procedures;
plug_in_class->create_procedure = sgi_create_procedure;
plug_in_class->set_i18n = STD_SET_I18N;
}
static void
sgi_init (Sgi *sgi)
{
}
static GList *
sgi_query_procedures (PikaPlugIn *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 PikaProcedure *
sgi_create_procedure (PikaPlugIn *plug_in,
const gchar *name)
{
PikaProcedure *procedure = NULL;
if (! strcmp (name, LOAD_PROC))
{
procedure = pika_load_procedure_new (plug_in, name,
PIKA_PDB_PROC_TYPE_PLUGIN,
sgi_load, NULL, NULL);
pika_procedure_set_menu_label (procedure,
N_("Silicon Graphics IRIS image"));
pika_procedure_set_documentation (procedure,
_("Loads files in SGI image file format"),
_("This plug-in loads SGI image files."),
name);
pika_procedure_set_attribution (procedure,
"Michael Sweet <mike@easysw.com>",
"Copyright 1997-1998 by Michael Sweet",
PLUG_IN_VERSION);
pika_file_procedure_set_mime_types (PIKA_FILE_PROCEDURE (procedure),
"image/x-sgi");
pika_file_procedure_set_extensions (PIKA_FILE_PROCEDURE (procedure),
"sgi,rgb,rgba,bw,icon");
pika_file_procedure_set_magics (PIKA_FILE_PROCEDURE (procedure),
"0,short,474");
}
else if (! strcmp (name, SAVE_PROC))
{
procedure = pika_save_procedure_new (plug_in, name,
PIKA_PDB_PROC_TYPE_PLUGIN,
FALSE, sgi_save, NULL, NULL);
pika_procedure_set_image_types (procedure, "*");
pika_procedure_set_menu_label (procedure,
N_("Silicon Graphics IRIS image"));
pika_file_procedure_set_format_name (PIKA_FILE_PROCEDURE (procedure),
"SGI");
pika_procedure_set_icon_name (procedure, PIKA_ICON_BRUSH);
pika_procedure_set_documentation (procedure,
_("Exports files in SGI image file format"),
_("This plug-in exports SGI image files."),
name);
pika_procedure_set_attribution (procedure,
"Michael Sweet <mike@easysw.com>",
"Copyright 1997-1998 by Michael Sweet",
PLUG_IN_VERSION);
pika_file_procedure_set_mime_types (PIKA_FILE_PROCEDURE (procedure),
"image/x-sgi");
pika_file_procedure_set_extensions (PIKA_FILE_PROCEDURE (procedure),
"sgi,rgb,rgba,bw,icon");
PIKA_PROC_ARG_INT (procedure, "compression",
_("Compression _type"),
_("Compression level (0 = none, 1 = RLE, 2 = ARLE)"),
0, 2, SGI_COMP_RLE,
PIKA_PARAM_READWRITE);
}
return procedure;
}
static PikaValueArray *
sgi_load (PikaProcedure *procedure,
PikaRunMode run_mode,
GFile *file,
PikaMetadata *metadata,
PikaMetadataLoadFlags *flags,
PikaProcedureConfig *config,
gpointer run_data)
{
PikaValueArray *return_vals;
PikaImage *image;
GError *error = NULL;
gegl_init (NULL, NULL);
image = load_image (file, &error);
if (! image)
return pika_procedure_new_return_values (procedure,
PIKA_PDB_EXECUTION_ERROR,
error);
return_vals = pika_procedure_new_return_values (procedure,
PIKA_PDB_SUCCESS,
NULL);
PIKA_VALUES_SET_IMAGE (return_vals, 1, image);
return return_vals;
}
static PikaValueArray *
sgi_save (PikaProcedure *procedure,
PikaRunMode run_mode,
PikaImage *image,
gint n_drawables,
PikaDrawable **drawables,
GFile *file,
PikaMetadata *metadata,
PikaProcedureConfig *config,
gpointer run_data)
{
PikaPDBStatusType status = PIKA_PDB_SUCCESS;
PikaExportReturn export = PIKA_EXPORT_CANCEL;
GError *error = NULL;
gegl_init (NULL, NULL);
switch (run_mode)
{
case PIKA_RUN_INTERACTIVE:
case PIKA_RUN_WITH_LAST_VALS:
pika_ui_init (PLUG_IN_BINARY);
export = pika_export_image (&image, &n_drawables, &drawables, "SGI",
PIKA_EXPORT_CAN_HANDLE_RGB |
PIKA_EXPORT_CAN_HANDLE_GRAY |
PIKA_EXPORT_CAN_HANDLE_INDEXED |
PIKA_EXPORT_CAN_HANDLE_ALPHA);
if (export == PIKA_EXPORT_CANCEL)
return pika_procedure_new_return_values (procedure,
PIKA_PDB_CANCEL,
NULL);
break;
default:
break;
}
if (n_drawables != 1)
{
g_set_error (&error, G_FILE_ERROR, 0,
_("SGI format does not support multiple layers."));
return pika_procedure_new_return_values (procedure,
PIKA_PDB_CALLING_ERROR,
error);
}
if (run_mode == PIKA_RUN_INTERACTIVE)
{
if (! save_dialog (procedure, G_OBJECT (config), image))
status = PIKA_PDB_CANCEL;
}
if (status == PIKA_PDB_SUCCESS)
{
if (! save_image (file, image, drawables[0],
G_OBJECT (config), &error))
{
status = PIKA_PDB_EXECUTION_ERROR;
}
}
if (export == PIKA_EXPORT_EXPORT)
{
pika_image_delete (image);
g_free (drawables);
}
return pika_procedure_new_return_values (procedure, status, error);
}
static PikaImage *
load_image (GFile *file,
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 PIKA */
count, /* Count of rows to put in image */
bytes; /* Number of channels to use */
sgi_t *sgip; /* File pointer */
PikaImage *image; /* Image */
PikaLayer *layer; /* Layer */
GeglBuffer *buffer; /* Buffer for layer */
guchar **pixels, /* Pixel rows */
*pptr; /* Current pixel */
gushort **rows; /* SGI image data */
PikaPrecision precision;
const Babl *bablfmt = NULL;
/*
* Open the file for reading...
*/
pika_progress_init_printf (_("Opening '%s'"),
pika_file_get_utf8_name (file));
sgip = sgiOpen (g_file_peek_path (file), SGI_READ, 0, 0, 0, 0, 0);
if (! sgip)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Could not open '%s' for reading."),
pika_file_get_utf8_name (file));
free (sgip);
return NULL;
};
/*
* Get the image dimensions and create the image...
*/
/* Sanitize dimensions (note that they are unsigned short and can
* thus never be larger than PIKA_MAX_IMAGE_SIZE
*/
if (sgip->xsize == 0 /*|| sgip->xsize > PIKA_MAX_IMAGE_SIZE*/)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Invalid width: %hu"), sgip->xsize);
free (sgip);
return NULL;
}
if (sgip->ysize == 0 /*|| sgip->ysize > PIKA_MAX_IMAGE_SIZE*/)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Invalid height: %hu"), sgip->ysize);
free (sgip);
return NULL;
}
if (sgip->zsize == 0 /*|| sgip->zsize > PIKA_MAX_IMAGE_SIZE*/)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Invalid number of channels: %hu"), sgip->zsize);
free (sgip);
return NULL;
}
bytes = sgip->zsize;
switch (sgip->zsize)
{
case 1 : /* Grayscale */
image_type = PIKA_GRAY;
layer_type = PIKA_GRAY_IMAGE;
if (sgip->bpp == 1)
{
precision = PIKA_PRECISION_U8_NON_LINEAR;
bablfmt = babl_format ("Y' u8");
}
else
{
precision = PIKA_PRECISION_U16_NON_LINEAR;
bablfmt = babl_format ("Y' u16");
}
break;
case 2 : /* Grayscale + alpha */
image_type = PIKA_GRAY;
layer_type = PIKA_GRAYA_IMAGE;
if (sgip->bpp == 1)
{
precision = PIKA_PRECISION_U8_NON_LINEAR;
bablfmt = babl_format ("Y'A u8");
}
else
{
precision = PIKA_PRECISION_U16_NON_LINEAR;
bablfmt = babl_format ("Y'A u16");
}
break;
case 3 : /* RGB */
image_type = PIKA_RGB;
layer_type = PIKA_RGB_IMAGE;
if (sgip->bpp == 1)
{
precision = PIKA_PRECISION_U8_NON_LINEAR;
bablfmt = babl_format ("R'G'B' u8");
}
else
{
precision = PIKA_PRECISION_U16_NON_LINEAR;
bablfmt = babl_format ("R'G'B' u16");
}
break;
case 4 : /* RGBA */
image_type = PIKA_RGB;
layer_type = PIKA_RGBA_IMAGE;
if (sgip->bpp == 1)
{
precision = PIKA_PRECISION_U8_NON_LINEAR;
bablfmt = babl_format ("R'G'B'A u8");
}
else
{
precision = PIKA_PRECISION_U16_NON_LINEAR;
bablfmt = babl_format ("R'G'B'A u16");
}
break;
default:
image_type = PIKA_RGB;
layer_type = PIKA_RGBA_IMAGE;
bytes = 4;
if (sgip->bpp == 1)
{
precision = PIKA_PRECISION_U8_NON_LINEAR;
bablfmt = babl_format ("R'G'B'A u8");
}
else
{
precision = PIKA_PRECISION_U16_NON_LINEAR;
bablfmt = babl_format ("R'G'B'A u16");
}
break;
}
image = pika_image_new_with_precision (sgip->xsize, sgip->ysize,
image_type, precision);
if (! image)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
"Could not allocate new image: %s",
pika_pdb_get_last_error (pika_get_pdb ()));
free (sgip);
return NULL;
}
/*
* Create the "background" layer to hold the image...
*/
layer = pika_layer_new (image, _("Background"), sgip->xsize, sgip->ysize,
layer_type,
100,
pika_image_get_default_new_layer_mode (image));
pika_image_insert_layer (image, layer, NULL, 0);
/*
* Get the drawable and set the pixel region for our load...
*/
buffer = pika_drawable_get_buffer (PIKA_DRAWABLE (layer));
/*
* Temporary buffers...
*/
tile_height = pika_tile_height ();
pixels = g_new (guchar *, tile_height);
pixels[0] = g_new (guchar, ((gsize) tile_height) * sgip->xsize * sgip->bpp * bytes);
for (i = 1; i < tile_height; i ++)
pixels[i] = pixels[0] + sgip->xsize * sgip->bpp * 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,
bablfmt, pixels[0], GEGL_AUTO_ROWSTRIDE);
count = 0;
pika_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)
g_printerr ("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...
*/
guint16 *pixels16;
for (x = 0, pixels16 = (guint16 *) pixels[count]; x < sgip->xsize; x ++)
for (i = 0; i < bytes; i ++, pixels16 ++)
*pixels16 = rows[i][x];
}
}
/*
* Do the last n rows (count always > 0)
*/
gegl_buffer_set (buffer, GEGL_RECTANGLE (0, y - count,
sgip->xsize, count), 0,
bablfmt, 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);
pika_progress_update (1.0);
return image;
}
static gint
save_image (GFile *file,
PikaImage *image,
PikaDrawable *drawable,
GObject *config,
GError **error)
{
gint compression;
gint i, j; /* Looping var */
gint x; /* Current X coordinate */
gint y; /* Current Y coordinate */
gint width; /* Drawable width */
gint height; /* Drawable height */
gint tile_height; /* Height of tile in PIKA */
gint count; /* Count of rows to put in image */
gint zsize; /* Number of channels in file */
sgi_t *sgip; /* File pointer */
GeglBuffer *buffer; /* Buffer for layer */
const Babl *format;
guchar **pixels; /* Pixel rows */
guchar *pptr; /* Current pixel */
gushort **rows; /* SGI image data */
g_object_get (config,
"compression", &compression,
NULL);
/*
* Get the drawable for the current image...
*/
width = pika_drawable_get_width (drawable);
height = pika_drawable_get_height (drawable);
buffer = pika_drawable_get_buffer (drawable);
switch (pika_drawable_type (drawable))
{
case PIKA_GRAY_IMAGE:
zsize = 1;
format = babl_format ("Y' u8");
break;
case PIKA_GRAYA_IMAGE:
zsize = 2;
format = babl_format ("Y'A u8");
break;
case PIKA_RGB_IMAGE:
case PIKA_INDEXED_IMAGE:
zsize = 3;
format = babl_format ("R'G'B' u8");
break;
case PIKA_RGBA_IMAGE:
case PIKA_INDEXEDA_IMAGE:
format = babl_format ("R'G'B'A u8");
zsize = 4;
break;
default:
return FALSE;
}
/*
* Open the file for writing...
*/
pika_progress_init_printf (_("Exporting '%s'"),
pika_file_get_utf8_name (file));
sgip = sgiOpen (g_file_peek_path (file), SGI_WRITE, compression, 1,
width, height, zsize);
if (! sgip)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Could not open '%s' for writing."),
pika_file_get_utf8_name (file));
return FALSE;
};
/*
* Allocate memory for "tile_height" rows...
*/
tile_height = pika_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);
};
pika_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);
pika_progress_update (1.0);
return TRUE;
}
static gboolean
save_dialog (PikaProcedure *procedure,
GObject *config,
PikaImage *image)
{
GtkWidget *dialog;
GtkWidget *vbox;
GtkListStore *store;
gboolean run;
dialog = pika_save_procedure_dialog_new (PIKA_SAVE_PROCEDURE (procedure),
PIKA_PROCEDURE_CONFIG (config),
image);
store = pika_int_store_new (_("No compression"),
SGI_COMP_NONE,
_("RLE compression"),
SGI_COMP_RLE,
_("Aggressive RLE (not supported by SGI)"),
SGI_COMP_ARLE,
NULL);
pika_procedure_dialog_get_int_combo (PIKA_PROCEDURE_DIALOG (dialog),
"compression", PIKA_INT_STORE (store));
vbox = pika_procedure_dialog_fill_box (PIKA_PROCEDURE_DIALOG (dialog),
"sgi-vbox", "compression", NULL);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
pika_procedure_dialog_fill (PIKA_PROCEDURE_DIALOG (dialog),
"sgi-vbox", NULL);
gtk_widget_show (dialog);
run = pika_procedure_dialog_run (PIKA_PROCEDURE_DIALOG (dialog));
gtk_widget_destroy (dialog);
return run;
}
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