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gimp/plug-ins/common/psp.c

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/* GIMP plug-in to load and save Paint Shop Pro files (.PSP and .TUB)
*
* Copyright (C) 1999 Tor Lillqvist
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*
*
* Work in progress! Doesn't handle saving yet.
*
* For a copy of the PSP file format documentation, surf to
* http://www.jasc.com.
*
*/
/* set to the level of debugging output you want, 0 for none */
#define PSP_DEBUG 0
/* the max number of layers that this plugin should try to load */
#define MAX_LAYERS 64
#define IFDBG(level) if (PSP_DEBUG >= level)
#include "config.h"
#include <glib.h> /* We want glib.h first because of some
* pretty obscure Win32 compilation issues.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <gtk/gtk.h>
#include <zlib.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include <libgimp/parasiteio.h>
#include <libgimp/stdplugins-intl.h>
/* Note that the upcoming PSP version 6 writes PSP file format version
* 4.0, but the documentation for that apparently isn't publicly
* available (yet). The format is luckily designed to be somwehat
* downward compatible, however. The semantics of many of the
* additional fields and block types can be relatively easily reverse
* engineered.
*/
/* The following was cut and pasted from the PSP file format
* documentation version 3.0.(Minor stylistic changes done.)
*
*
* To be on the safe side, here is the whole copyright notice from the
* specification:
*
* The Paint Shop Pro File Format Specification (the Specification) is
* copyright 1998 by Jasc Software, Inc. Jasc grants you a
* nonexclusive license to use the Specification for the sole purposes
* of developing software products(s) incorporating the
* Specification. You are also granted the right to identify your
* software product(s) as incorporating the Paint Shop Pro Format
* (PSP) provided that your software in incorporating the
* Specification complies with the terms, definitions, constraints and
* specifications contained in the Specification and subject to the
* following: DISCLAIMER OF WARRANTIES. THE SPECIFICATION IS PROVIDED
* AS IS. JASC DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED,
* INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT.
*
* You are solely responsible for the selection, use, efficiency and
* suitability of the Specification for your software products. OTHER
* WARRANTIES EXCLUDED. JASC SHALL NOT BE LIABLE FOR ANY DIRECT,
* INDIRECT, CONSEQUENTIAL, EXEMPLARY, PUNITIVE OR INCIDENTAL DAMAGES
* ARISING FROM ANY CAUSE EVEN IF JASC HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES. CERTAIN JURISDICTIONS DO NOT PERMIT
* THE LIMITATION OR EXCLUSION OF INCIDENTAL DAMAGES, SO THIS
* LIMITATION MAY NOT APPLY TO YOU. IN NO EVENT WILL JASC BE LIABLE
* FOR ANY AMOUNT GREATER THAN WHAT YOU ACTUALLY PAID FOR THE
* SPECIFICATION. Should any warranties be found to exist, such
* warranties shall be limited in duration to ninety (90) days
* following the date you receive the Specification.
*
* Indemnification. By your inclusion of the Paint Shop Pro File
* Format in your software product(s) you agree to indemnify and hold
* Jasc Software, Inc. harmless from any and all claims of any kind or
* nature made by any of your customers with respect to your software
* product(s).
*
* Export Laws. You agree that you and your customers will not export
* your software or Specification except in compliance with the laws
* and regulations of the United States.
*
* US Government Restricted Rights. The Specification and any
* accompanying materials are provided with Restricted Rights. Use,
* duplication or disclosure by the Government is subject to
* restrictions as set forth in subparagraph (c)(1)(ii) of The Rights
* in Technical Data and Computer Software clause at DFARS
* 252.227-7013, or subparagraphs (c)(1) and (2) of the Commercial
* Computer Software - Restricted Rights at 48 CFR 52.227-19, as
* applicable. Contractor/manufacturer is Jasc Software, Inc., PO Box
* 44997, Eden Prairie MN 55344.
*
* Jasc reserves the right to amend, modify, change, revoke or
* withdraw the Specification at any time and from time to time. Jasc
* shall have no obligation to support or maintain the Specification.
*/
/* Block identifiers.
*/
typedef enum {
PSP_IMAGE_BLOCK = 0, /* General Image Attributes Block (main) */
PSP_CREATOR_BLOCK, /* Creator Data Block (main) */
PSP_COLOR_BLOCK, /* Color Palette Block (main and sub) */
PSP_LAYER_START_BLOCK, /* Layer Bank Block (main) */
PSP_LAYER_BLOCK, /* Layer Block (sub) */
PSP_CHANNEL_BLOCK, /* Channel Block (sub) */
PSP_SELECTION_BLOCK, /* Selection Block (main) */
PSP_ALPHA_BANK_BLOCK, /* Alpha Bank Block (main) */
PSP_ALPHA_CHANNEL_BLOCK, /* Alpha Channel Block (sub) */
PSP_THUMBNAIL_BLOCK, /* Thumbnail Block (main) */
PSP_EXTENDED_DATA_BLOCK, /* Extended Data Block (main) */
PSP_TUBE_BLOCK /* Picture Tube Data Block (main) */
} PSPBlockID;
/* Bitmap type.
*/
typedef enum {
PSP_DIB_IMAGE = 0, /* Layer color bitmap */
PSP_DIB_TRANS_MASK, /* Layer transparency mask bitmap */
PSP_DIB_USER_MASK, /* Layer user mask bitmap */
PSP_DIB_SELECTION, /* Selection mask bitmap */
PSP_DIB_ALPHA_MASK, /* Alpha channel mask bitmap */
PSP_DIB_THUMBNAIL /* Thumbnail bitmap */
} PSPDIBType;
/* Channel types.
*/
typedef enum {
PSP_CHANNEL_COMPOSITE = 0, /* Channel of single channel bitmap */
PSP_CHANNEL_RED, /* Red channel of 24 bit bitmap */
PSP_CHANNEL_GREEN, /* Green channel of 24 bit bitmap */
PSP_CHANNEL_BLUE /* Blue channel of 24 bit bitmap */
} PSPChannelType;
/* Possible metrics used to measure resolution.
*/
typedef enum {
PSP_METRIC_UNDEFINED = 0, /* Metric unknown */
PSP_METRIC_INCH, /* Resolution is in inches */
PSP_METRIC_CM /* Resolution is in centimeters */
} PSP_METRIC;
/* Possible types of compression.
*/
typedef enum {
PSP_COMP_NONE = 0, /* No compression */
PSP_COMP_RLE, /* RLE compression */
PSP_COMP_LZ77 /* LZ77 compression */
} PSPCompression;
/* Picture tube placement mode.
*/
typedef enum {
tpmRandom, /* Place tube images in random intervals */
tpmConstant /* Place tube images in constant intervals */
} TubePlacementMode;
/* Picture tube selection mode.
*/
typedef enum {
tsmRandom, /* Randomly select the next image in */
/* tube to display */
tsmIncremental, /* Select each tube image in turn */
tsmAngular, /* Select image based on cursor direction */
tsmPressure, /* Select image based on pressure */
/* (from pressure-sensitive pad) */
tsmVelocity /* Select image based on cursor speed */
} TubeSelectionMode;
/* Extended data field types.
*/
typedef enum {
PSP_XDATA_TRNS_INDEX = 0 /* Transparency index field */
} PSPExtendedDataID;
/* Creator field types.
*/
typedef enum {
PSP_CRTR_FLD_TITLE = 0, /* Image document title field */
PSP_CRTR_FLD_CRT_DATE, /* Creation date field */
PSP_CRTR_FLD_MOD_DATE, /* Modification date field */
PSP_CRTR_FLD_ARTIST, /* Artist name field */
PSP_CRTR_FLD_CPYRGHT, /* Copyright holder name field */
PSP_CRTR_FLD_DESC, /* Image document description field */
PSP_CRTR_FLD_APP_ID, /* Creating app id field */
PSP_CRTR_FLD_APP_VER /* Creating app version field */
} PSPCreatorFieldID;
/* Creator application identifiers.
*/
typedef enum {
PSP_CREATOR_APP_UNKNOWN = 0, /* Creator application unknown */
PSP_CREATOR_APP_PAINT_SHOP_PRO /* Creator is Paint Shop Pro */
} PSPCreatorAppID;
/* Layer types.
*/
typedef enum {
PSP_LAYER_NORMAL = 0, /* Normal layer */
PSP_LAYER_FLOATING_SELECTION /* Floating selection layer */
} PSPLayerType;
/* Truth values.
*/
#if 0 /* FALSE and TRUE taken by GLib */
typedef enum {
FALSE = 0,
TRUE
} PSP_BOOLEAN;
#else
typedef gboolean PSP_BOOLEAN;
#endif
/* End of cut&paste from psp spec */
/* The following have been reverse engineered.
* If a new version of the spec becomes available,
* change to use the type and constant names from it.
*/
typedef enum {
PSP_BLEND_NORMAL = 0,
PSP_BLEND_DARKEN,
PSP_BLEND_LIGHTEN,
PSP_BLEND_HUE,
PSP_BLEND_SATURATION,
PSP_BLEND_COLOR,
PSP_BLEND_LUMINANCE,
PSP_BLEND_MULTIPLY,
PSP_BLEND_SCREEN,
PSP_BLEND_DISSOLVE,
PSP_BLEND_OVERLAY,
PSP_BLEND_HARD_LIGHT,
PSP_BLEND_SOFT_LIGHT,
PSP_BLEND_DIFFERENCE,
PSP_BLEND_DODGE,
PSP_BLEND_BURN,
PSP_BLEND_EXCLUSION
} PSPLayerBlendModes;
/* End of reverse engineered types */
/* We store the various PSP data in own structures.
* We cannot use structs intended to be direct copies of the file block
* headers because of struct alignment issues.
*/
typedef struct
{
guint32 width, height;
gdouble resolution;
guchar metric;
guint16 compression;
guint16 depth;
guchar greyscale;
guint32 active_layer;
guint16 layer_count;
} PSPimage;
/* Declare some local functions.
*/
static void query (void);
static void run (char *name,
int nparams,
GParam *param,
int *nreturn_vals,
GParam **return_vals);
static gint32 load_image (char *filename);
static gint save_image (char *filename,
gint32 image_ID,
gint32 drawable_ID);
/* Various local variables...
*/
GPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
/* Save info */
typedef struct
{
PSPCompression compression;
} PSPSaveVals;
typedef struct
{
gint run;
} PSPSaveInterface;
static PSPSaveVals psvals =
{
PSP_COMP_LZ77
};
static PSPSaveInterface psint =
{
FALSE /* run */
};
static guint16 major, minor;
static guint tile_height;
MAIN()
static void
query ()
{
static GParamDef load_args[] =
{
{ PARAM_INT32, "run_mode", "Interactive, non-interactive" },
{ PARAM_STRING, "filename", "The name of the file to load" },
{ PARAM_STRING, "raw_filename", "The name of the file to load" },
};
static GParamDef load_return_vals[] =
{
{ PARAM_IMAGE, "image", "Output image" },
};
static int nload_args = sizeof (load_args) / sizeof (load_args[0]);
static int nload_return_vals = sizeof (load_return_vals) / sizeof (load_return_vals[0]);
static GParamDef save_args[] =
{
{ PARAM_INT32, "run_mode", "Interactive, non-interactive" },
{ PARAM_IMAGE, "image", "Input image" },
{ PARAM_DRAWABLE, "drawable", "Drawable to save" },
{ PARAM_STRING, "filename", "The name of the file to save the image in" },
{ PARAM_STRING, "raw_filename", "The name of the file to save the image in" },
{ PARAM_INT32, "compression", "Specify 0 for no compression, "
"1 for RLE, and 2 for LZ77" }
};
static int nsave_args = sizeof (save_args) / sizeof (save_args[0]);
INIT_I18N();
gimp_install_procedure ("file_psp_load",
"loads images from the Paint Shop Pro PSP file format",
"This plug-in loads and saves images in "
"Paint Shop Pro's native PSP format. "
"Vector layers aren't handled. Saving isn't "
"yet implemented.",
"Tor Lillqvist",
"Tor Lillqvist",
"1999",
"<Load>/PSP",
NULL,
PROC_PLUG_IN,
nload_args, nload_return_vals,
load_args, load_return_vals);
/* Removed until Saving is implemented -- njl195@zepler.org
gimp_install_procedure ("file_psp_save",
"saves images in the Paint Shop Pro PSP file format",
"This plug-in loads and saves images in "
"Paint Shop Pro's native PSP format. "
"Vector layers aren't handled. Saving isn't "
"yet implemented.",
"Tor Lillqvist",
"Tor Lillqvist",
"1999",
"<Save>/PSP",
"RGB*, GRAY*, INDEXED*",
PROC_PLUG_IN,
nsave_args, 0,
save_args, NULL);
*/
gimp_register_magic_load_handler ("file_psp_load", "psp,tub", "",
"0,string,Paint Shop Pro Image File\n\032");
/* Removed until Saving is implemented -- njl195@zepler.org
gimp_register_save_handler ("file_psp_save", "psp,tub", "");
*/
}
static void
save_toggle_update (GtkWidget *widget,
gpointer data)
{
int *toggle_val;
toggle_val = (int *) data;
if (GTK_TOGGLE_BUTTON (widget)->active)
*toggle_val = TRUE;
else
*toggle_val = FALSE;
}
static void
save_close_callback (GtkWidget *widget,
gpointer data)
{
gtk_main_quit ();
}
static void
save_ok_callback (GtkWidget *widget,
gpointer data)
{
psint.run = TRUE;
gtk_widget_destroy (GTK_WIDGET (data));
}
static void
init_gtk ()
{
gchar **argv;
gint argc;
argc = 1;
argv = g_new (gchar *, 1);
argv[0] = g_strdup ("psp");
gtk_init (&argc, &argv);
gtk_rc_parse (gimp_gtkrc ());
}
static gint
save_dialog ()
{
GtkWidget *dlg;
GtkWidget *button;
GtkWidget *toggle;
GtkWidget *frame;
GtkWidget *toggle_vbox;
GSList *group;
gint use_none = (psvals.compression == PSP_COMP_NONE);
gint use_rle = (psvals.compression == PSP_COMP_RLE);
gint use_lz77 = (psvals.compression == PSP_COMP_LZ77);
dlg = gtk_dialog_new ();
gtk_window_set_title (GTK_WINDOW (dlg), "Save as PSP");
gtk_window_position (GTK_WINDOW (dlg), GTK_WIN_POS_MOUSE);
gtk_signal_connect (GTK_OBJECT (dlg), "destroy",
(GtkSignalFunc) save_close_callback,
NULL);
/* Action area */
button = gtk_button_new_with_label ("OK");
GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
gtk_signal_connect (GTK_OBJECT (button), "clicked",
(GtkSignalFunc) save_ok_callback,
dlg);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->action_area), button, TRUE, TRUE, 0);
gtk_widget_grab_default (button);
gtk_widget_show (button);
button = gtk_button_new_with_label ("Cancel");
GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
(GtkSignalFunc) gtk_widget_destroy,
GTK_OBJECT (dlg));
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->action_area), button, TRUE, TRUE, 0);
gtk_widget_show (button);
/* file save type */
frame = gtk_frame_new ("Data Compression");
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
gtk_container_border_width (GTK_CONTAINER (frame), 10);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->vbox), frame, FALSE, TRUE, 0);
toggle_vbox = gtk_vbox_new (FALSE, 5);
gtk_container_border_width (GTK_CONTAINER (toggle_vbox), 5);
gtk_container_add (GTK_CONTAINER (frame), toggle_vbox);
group = NULL;
toggle = gtk_radio_button_new_with_label (group, "None");
group = gtk_radio_button_group (GTK_RADIO_BUTTON (toggle));
gtk_box_pack_start (GTK_BOX (toggle_vbox), toggle, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
(GtkSignalFunc) save_toggle_update,
&use_none);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), use_none);
gtk_widget_show (toggle);
toggle = gtk_radio_button_new_with_label (group, "RLE");
group = gtk_radio_button_group (GTK_RADIO_BUTTON (toggle));
gtk_box_pack_start (GTK_BOX (toggle_vbox), toggle, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
(GtkSignalFunc) save_toggle_update,
&use_rle);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), use_rle);
gtk_widget_show (toggle);
toggle = gtk_radio_button_new_with_label (group, "LZ77");
group = gtk_radio_button_group (GTK_RADIO_BUTTON (toggle));
gtk_box_pack_start (GTK_BOX (toggle_vbox), toggle, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
(GtkSignalFunc) save_toggle_update,
&use_lz77);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), use_lz77);
gtk_widget_show (toggle);
gtk_widget_show (toggle_vbox);
gtk_widget_show (frame);
gtk_widget_show (dlg);
gtk_main ();
gdk_flush ();
if (use_none)
psvals.compression = PSP_COMP_NONE;
else if (use_rle)
psvals.compression = PSP_COMP_RLE;
else
psvals.compression = PSP_COMP_LZ77;
return psint.run;
}
static char *
block_name (int id)
{
static char *block_names[] =
{
"IMAGE",
"CREATOR",
"COLOR",
"LAYER_START",
"LAYER",
"CHANNEL",
"SELECTION",
"ALPHA_BANK",
"ALPHA_CHANNEL",
"THUMBNAIL",
"EXTENDED_DATA",
"TUBE"
};
static gchar *err_name = NULL;
if (id >= 0 && id <= PSP_TUBE_BLOCK)
return block_names[id];
g_free (err_name);
err_name = g_strdup_printf ("id=%d", id);
return err_name;
}
static int
read_block_header (FILE *f,
guint32 *init_len,
guint32 *total_len)
{
guchar buf[4];
guint16 id;
long header_start;
guint32 len;
IFDBG(3) header_start = ftell (f);
if (fread (buf, 4, 1, f) < 1
|| fread (&id, 2, 1, f) < 1
|| fread (&len, 4, 1, f) < 1
|| (major < 4 && fread (total_len, 4, 1, f) < 1))
{
g_message ("PSP: Error reading block header");
fclose (f);
return -1;
}
if (memcmp (buf, "~BK\0", 4) != 0)
{
g_message ("PSP: Invalid block header at %d", header_start);
fclose (f);
return -1;
}
IFDBG(3) g_message ("PSP: %s at %d", block_name (id),
header_start);
if (major < 4)
{
*init_len = GUINT32_FROM_LE (len);
*total_len = GUINT32_FROM_LE (*total_len);
}
else
{
/* Version 4.0 seems to have dropped the initial data chunk length
* field.
*/
*init_len = 0xDEADBEEF; /* Intentionally bogus, should not be used */
*total_len = GUINT32_FROM_LE (len);
}
return id;
}
static int
read_general_image_attribute_block (FILE *f,
guint init_len,
guint total_len,
PSPimage *ia)
{
char buf[6];
#ifdef G_HAVE_GINT64
gint64 res[1];
#else
guchar res[8];
#endif
if (init_len < 38 || total_len < 38)
{
g_message ("PSP: Invalid general image attribute chunk size");
fclose (f);
return -1;
}
if (major >= 4)
fseek (f, 4, SEEK_CUR);
if (fread (&ia->width, 4, 1, f) < 1
|| fread (&ia->height, 4, 1, f) < 1
|| fread (res, 8, 1, f) < 1
|| fread (&ia->metric, 1, 1, f) < 1
|| fread (&ia->compression, 2, 1, f) < 1
|| fread (&ia->depth, 2, 1, f) < 1
|| fread (buf, 2+4, 1, f) < 1 /* Skip plane and colour count */
|| fread (&ia->greyscale, 1, 1, f) < 1
|| fread (buf, 4, 1, f) < 1 /* Skip total image size */
|| fread (&ia->active_layer, 4, 1, f) < 1
|| fread (&ia->layer_count, 2, 1, f) < 1)
{
g_message ("PSP: Error reading general image attribute block");
fclose (f);
return -1;
}
ia->width = GUINT32_FROM_LE (ia->width);
ia->height = GUINT32_FROM_LE (ia->height);
#ifdef G_HAVE_GINT64
res[0] = GUINT64_FROM_LE (res[0]);
#else
#if G_BYTE_ORDER == G_BIG_ENDIAN
{
/* Swap bytes in the double */
guchar t;
t = res[0];
res[0] = res[7];
res[7] = t;
t = res[1];
res[1] = res[6];
res[6] = t;
t = res[2];
res[2] = res[5];
res[5] = t;
t = res[3];
res[3] = res[4];
res[4] = t;
}
#endif
#endif
memcpy (&ia->resolution, res, 8);
if (ia->metric == PSP_METRIC_CM)
ia->resolution /= 2.54;
ia->compression = GUINT16_FROM_LE (ia->compression);
if (ia->compression > PSP_COMP_LZ77)
{
g_message ("PSP: Unknown compression type %d", ia->compression);
fclose (f);
return -1;
}
ia->depth = GUINT16_FROM_LE (ia->depth);
if (ia->depth != 24)
{
g_message ("PSP: Unsupported bit depth %d", ia->depth);
fclose (f);
return -1;
}
ia->active_layer = GUINT32_FROM_LE (ia->active_layer);
ia->layer_count = GUINT16_FROM_LE (ia->layer_count);
return 0;
}
static int
try_fseek (FILE *f, long pos, int whence)
{
if (fseek (f, pos, whence) < 0)
{
g_message ("PSP: Seek error");
fclose (f);
return -1;
}
return 0;
}
static int
read_creator_block (FILE *f,
gint image_ID,
guint total_len,
PSPimage *ia)
{
long data_start;
guchar buf[4];
guint16 keyword;
guint32 length;
gchar *string;
gchar *title = NULL, *artist = NULL, *copyright = NULL, *description = NULL;
guint32 dword;
guint32 cdate = 0, mdate = 0, appid, appver;
GString *comment;
Parasite *comment_parasite;
data_start = ftell (f);
comment = g_string_new (NULL);
while (ftell (f) < data_start + total_len)
{
if (fread (buf, 4, 1, f) < 1
|| fread (&keyword, 2, 1, f) < 1
|| fread (&length, 4, 1, f) < 1)
{
g_message ("PSP: Error reading creator keyword chunk");
fclose (f);
gimp_image_delete (image_ID);
return -1;
}
if (memcmp (buf, "~FL\0", 4) != 0)
{
g_message ("PSP: Invalid keyword chunk header");
fclose (f);
gimp_image_delete (image_ID);
return -1;
}
keyword = GUINT16_FROM_LE (keyword);
length = GUINT32_FROM_LE (length);
switch (keyword)
{
case PSP_CRTR_FLD_TITLE:
case PSP_CRTR_FLD_ARTIST:
case PSP_CRTR_FLD_CPYRGHT:
case PSP_CRTR_FLD_DESC:
string = g_malloc (length + 1);
if (fread (string, length, 1, f) < 1)
{
g_message ("PSP: Error reading creator keyword data");
fclose (f);
gimp_image_delete (image_ID);
return -1;
}
switch (keyword)
{
case PSP_CRTR_FLD_TITLE:
g_free (title); title = string; break;
case PSP_CRTR_FLD_ARTIST:
g_free (artist); artist = string; break;
case PSP_CRTR_FLD_CPYRGHT:
g_free (copyright); copyright = string; break;
case PSP_CRTR_FLD_DESC:
g_free (description); description = string; break;
default:
g_free (string);
}
break;
case PSP_CRTR_FLD_CRT_DATE:
case PSP_CRTR_FLD_MOD_DATE:
case PSP_CRTR_FLD_APP_ID:
case PSP_CRTR_FLD_APP_VER:
if (fread (&dword, 4, 1, f) < 1)
{
g_message ("PSP: Error reading creator keyword data");
fclose (f);
gimp_image_delete (image_ID);
return -1;
}
switch (keyword)
{
case PSP_CRTR_FLD_CRT_DATE:
cdate = dword; break;
case PSP_CRTR_FLD_MOD_DATE:
mdate = dword; break;
case PSP_CRTR_FLD_APP_ID:
appid = dword; break;
case PSP_CRTR_FLD_APP_VER:
appver = dword; break;
}
break;
default:
if (try_fseek (f, length, SEEK_CUR) < 0)
{
gimp_image_delete (image_ID);
return -1;
}
break;
}
}
if (title)
{
g_string_append (comment, title);
g_free (title);
g_string_append (comment, "\n");
}
if (artist)
{
g_string_append (comment, artist);
g_free (artist);
g_string_append (comment, "\n");
}
if (copyright)
{
g_string_append (comment, "Copyright ");
g_string_append (comment, copyright);
g_free (copyright);
g_string_append (comment, "\n");
}
if (description)
{
g_string_append (comment, description);
g_free (description);
g_string_append (comment, "\n");
}
if (comment->len > 0)
{
comment_parasite = parasite_new("gimp-comment", PARASITE_PERSISTENT,
strlen (comment->str) + 1, comment->str);
gimp_image_parasite_attach(image_ID, comment_parasite);
parasite_free (comment_parasite);
}
g_string_free (comment, FALSE);
}
static void inline
swab_rect (guint32 *rect)
{
rect[0] = GUINT32_FROM_LE (rect[0]);
rect[1] = GUINT32_FROM_LE (rect[1]);
rect[2] = GUINT32_FROM_LE (rect[2]);
rect[3] = GUINT32_FROM_LE (rect[3]);
}
static GLayerMode
gimp_layer_mode_from_psp_blend_mode (PSPLayerBlendModes mode)
{
switch (mode)
{
case PSP_BLEND_NORMAL:
return NORMAL_MODE;
case PSP_BLEND_DARKEN:
return DARKEN_ONLY_MODE;
case PSP_BLEND_LIGHTEN:
return LIGHTEN_ONLY_MODE;
case PSP_BLEND_HUE:
return HUE_MODE;
case PSP_BLEND_SATURATION:
return SATURATION_MODE;
case PSP_BLEND_COLOR:
return COLOR_MODE;
case PSP_BLEND_LUMINANCE:
return VALUE_MODE; /* ??? */
case PSP_BLEND_MULTIPLY:
return MULTIPLY_MODE;
case PSP_BLEND_SCREEN:
return SCREEN_MODE;
case PSP_BLEND_DISSOLVE:
return DISSOLVE_MODE;
case PSP_BLEND_OVERLAY:
return OVERLAY_MODE;
case PSP_BLEND_HARD_LIGHT:
case PSP_BLEND_SOFT_LIGHT:
return -1;
case PSP_BLEND_DIFFERENCE:
return DIFFERENCE_MODE;
case PSP_BLEND_DODGE:
case PSP_BLEND_BURN:
case PSP_BLEND_EXCLUSION:
return -1; /* ??? */
}
return -1;
}
static char *
blend_mode_name (PSPLayerBlendModes mode)
{
static char *blend_mode_names[] =
{
"NORMAL",
"DARKEN",
"LIGHTEN",
"HUE",
"SATURATION",
"COLOR",
"LUMINANCE",
"MULTIPLY",
"SCREEN",
"DISSOLVE",
"OVERLAY",
"HARD_LIGHT",
"SOFT_LIGHT",
"DIFFERENCE",
"DODGE",
"BURN",
"EXCLUSION"
};
static gchar *err_name = NULL;
if (mode >= 0 && mode <= PSP_BLEND_EXCLUSION)
return blend_mode_names[mode];
g_free (err_name);
err_name = g_strdup_printf ("unknown layer blend mode %d", mode);
return err_name;
}
static char *
bitmap_type_name (int type)
{
static char *bitmap_type_names[] =
{
"IMAGE",
"TRANS_MASK",
"USER_MASK",
"SELECTION",
"ALPHA_MASK",
"THUMBNAIL"
};
static gchar *err_name = NULL;
if (type >= 0 && type <= PSP_DIB_THUMBNAIL)
return bitmap_type_names[type];
g_free (err_name);
err_name = g_strdup_printf ("unknown bitmap type %d", type);
return err_name;
}
static char *
channel_type_name (int type)
{
static char *channel_type_names[] =
{
"COMPOSITE",
"RED",
"GREEN",
"BLUE"
};
static gchar *err_name = NULL;
if (type >= 0 && type <= PSP_DIB_THUMBNAIL)
return channel_type_names[type];
g_free (err_name);
err_name = g_strdup_printf ("unknown channel type %d", type);
return err_name;
}
static void *
psp_zalloc (void *opaque, guint items, guint size)
{
return g_malloc (items*size);
}
static void
psp_zfree (void *opaque, void *ptr)
{
g_free (ptr);
}
static int
read_channel_data (FILE *f,
PSPimage *ia,
guchar **pixels,
guint bytespp,
guint offset,
GDrawable *drawable,
guint32 compressed_len)
{
gint i, n, x, y, width = drawable->width, height = drawable->height;
gint npixels = width * height;
guchar *buf, *buf2, *p, *q, *endq;
guchar runcount, byte;
z_stream zstream;
switch (ia->compression)
{
case PSP_COMP_NONE:
if (bytespp == 1)
{
if ((width % 4) == 0)
fread (pixels[0], height * width, 1, f);
else
{
for (y = 0; y < height; y++)
{
fread (pixels[y], width, 1, f);
fseek (f, 4 - (width % 4), SEEK_CUR);
}
}
}
else
{
buf = g_malloc (width);
for (y = 0; y < height; y++)
{
fread (buf, width, 1, f);
if (width % 4)
fseek (f, 4 - (width % 4), SEEK_CUR);
p = buf;
q = pixels[y] + offset;
for (i = 0; i < width; i++)
{
*q = *p++;
q += bytespp;
}
}
g_free (buf);
}
break;
case PSP_COMP_RLE:
q = pixels[0] + offset;
endq = q + npixels * bytespp;
buf = g_malloc (127);
while (q < endq)
{
p = buf;
fread (&runcount, 1, 1, f);
if (runcount > 128)
{
runcount -= 128;
fread (&byte, 1, 1, f);
memset (buf, byte, runcount);
}
else
fread (buf, runcount, 1, f);
if (bytespp == 1)
{
memmove (q, buf, runcount);
q += runcount;
}
else
{
p = buf;
for (i = 0; i < runcount; i++)
{
*q = *p++;
q += bytespp;
}
}
}
g_free (buf);
break;
case PSP_COMP_LZ77:
buf = g_malloc (compressed_len);
fread (buf, compressed_len, 1, f);
zstream.next_in = buf;
zstream.avail_in = compressed_len;
zstream.zalloc = psp_zalloc;
zstream.zfree = psp_zfree;
zstream.opaque = f;
if (inflateInit (&zstream) != Z_OK)
{
g_message ("PSP: zlib error");
fclose (f);
return -1;
}
if (bytespp == 1)
zstream.next_out = pixels[0];
else
{
buf2 = g_malloc (npixels);
zstream.next_out = buf2;
}
zstream.avail_out = npixels;
if (inflate (&zstream, Z_FINISH) != Z_STREAM_END)
{
g_message ("PSP: zlib error");
inflateEnd (&zstream);
fclose (f);
return -1;
}
inflateEnd (&zstream);
g_free (buf);
if (bytespp > 1)
{
p = buf2;
q = pixels[0] + offset;
for (i = 0; i < npixels; i++)
{
*q = *p++;
q += bytespp;
}
g_free (buf2);
}
break;
}
}
static int
read_layer_block (FILE *f,
gint image_ID,
guint total_len,
PSPimage *ia)
{
int i;
long block_start, sub_block_start, channel_start;
int sub_id;
guint32 sub_init_len, sub_total_len;
guchar *name;
guint16 namelen;
guchar type, opacity, blend_mode, visibility, transparency_protected;
guchar link_group_id, mask_linked, mask_disabled;
guint32 image_rect[4], saved_image_rect[4], mask_rect[4], saved_mask_rect[4];
gboolean null_layer = FALSE;
guint16 bitmap_count, channel_count;
GDrawableType drawable_type;
guint32 layer_ID;
GLayerMode layer_mode;
guint32 channel_init_len, channel_total_len;
guint32 compressed_len, uncompressed_len;
guint16 bitmap_type, channel_type;
gint width, height, bytespp, offset;
guchar **pixels, *pixel;
GDrawable *drawable;
GPixelRgn pixel_rgn;
block_start = ftell (f);
while (ftell (f) < block_start + total_len)
{
/* Read the layer sub-block header */
sub_id = read_block_header (f, &sub_init_len, &sub_total_len);
if (sub_id == -1)
{
gimp_image_delete (image_ID);
return -1;
}
if (sub_id != PSP_LAYER_BLOCK)
{
g_message ("PSP: Invalid layer sub-block %s, should be LAYER",
block_name (sub_id));
fclose (f);
gimp_image_delete (image_ID);
return -1;
}
sub_block_start = ftell (f);
/* Read layer information chunk */
if (major >= 4)
{
if (fseek (f, 4, SEEK_CUR) < 0
|| fread (&namelen, 2, 1, f) < 1
|| ((namelen = GUINT16_FROM_LE (namelen)) && FALSE)
|| (name = g_malloc (namelen + 1)) == NULL
|| fread (name, namelen, 1, f) < 1
|| fread (&type, 1, 1, f) < 1
|| fread (&image_rect, 16, 1, f) < 1
|| fread (&saved_image_rect, 16, 1, f) < 1
|| fread (&opacity, 1, 1, f) < 1
|| fread (&blend_mode, 1, 1, f) < 1
|| fread (&visibility, 1, 1, f) < 1
|| fread (&transparency_protected, 1, 1, f) < 1
|| fread (&link_group_id, 1, 1, f) < 1
|| fread (&mask_rect, 16, 1, f) < 1
|| fread (&saved_mask_rect, 16, 1, f) < 1
|| fread (&mask_linked, 1, 1, f) < 1
|| fread (&mask_disabled, 1, 1, f) < 1
|| fseek (f, 47, SEEK_CUR) < 0
|| fread (&bitmap_count, 2, 1, f) < 1
|| fread (&channel_count, 2, 1, f) < 1)
{
g_message ("PSP: Error reading layer information chunk");
fclose (f);
gimp_image_delete (image_ID);
return -1;
}
name[namelen] = 0;
type = PSP_LAYER_NORMAL; /* ??? */
}
else
{
name = g_malloc (257);
name[256] = 0;
if (fread (name, 256, 1, f) < 1
|| fread (&type, 1, 1, f) < 1
|| fread (&image_rect, 16, 1, f) < 1
|| fread (&saved_image_rect, 16, 1, f) < 1
|| fread (&opacity, 1, 1, f) < 1
|| fread (&blend_mode, 1, 1, f) < 1
|| fread (&visibility, 1, 1, f) < 1
|| fread (&transparency_protected, 1, 1, f) < 1
|| fread (&link_group_id, 1, 1, f) < 1
|| fread (&mask_rect, 16, 1, f) < 1
|| fread (&saved_mask_rect, 16, 1, f) < 1
|| fread (&mask_linked, 1, 1, f) < 1
|| fread (&mask_disabled, 1, 1, f) < 1
|| fseek (f, 43, SEEK_CUR) < 0
|| fread (&bitmap_count, 2, 1, f) < 1
|| fread (&channel_count, 2, 1, f) < 1)
{
g_message ("PSP: Error reading layer information chunk");
g_free (name);
fclose (f);
gimp_image_delete (image_ID);
return -1;
}
}
if (type == PSP_LAYER_FLOATING_SELECTION)
g_message ("PSP: Floating selection restored as normal layer");
swab_rect (image_rect);
swab_rect (saved_image_rect);
swab_rect (mask_rect);
swab_rect (saved_mask_rect);
bitmap_count = GUINT16_FROM_LE (bitmap_count);
channel_count = GUINT16_FROM_LE (channel_count);
layer_mode = gimp_layer_mode_from_psp_blend_mode (blend_mode);
if ((int) layer_mode == -1)
{
g_message ("PSP: Unsupported PSP layer blend mode %s "
"for layer %s, setting layer invisible",
blend_mode_name (blend_mode), name);
layer_mode = NORMAL_MODE;
visibility = FALSE;
}
width = saved_image_rect[2] - saved_image_rect[0];
height = saved_image_rect[3] - saved_image_rect[1];
IFDBG(2) g_message
("PSP: layer: %s %dx%d (%dx%d) @%d,%d opacity %d blend_mode %s "
"%d bitmaps %d channels",
name,
image_rect[2] - image_rect[0], image_rect[3] - image_rect[1],
width, height,
saved_image_rect[0], saved_image_rect[1],
opacity, blend_mode_name (blend_mode),
bitmap_count, channel_count);
IFDBG(2) g_message
("PSP: mask %dx%d (%dx%d) @%d,%d",
mask_rect[2] - mask_rect[0],
mask_rect[3] - mask_rect[1],
saved_mask_rect[2] - saved_mask_rect[0],
saved_mask_rect[3] - saved_mask_rect[1],
saved_mask_rect[0], saved_mask_rect[1]);
if (width == 0)
{
width++;
null_layer = TRUE;
}
if (height == 0)
{
height++;
null_layer = TRUE;
}
if (ia->greyscale)
if (!null_layer && bitmap_count == 1)
drawable_type = GRAY_IMAGE, bytespp = 1;
else
drawable_type = GRAYA_IMAGE, bytespp = 1;
else
if (!null_layer && bitmap_count == 1)
drawable_type = RGB_IMAGE, bytespp = 3;
else
drawable_type = RGBA_IMAGE, bytespp = 4;
layer_ID = gimp_layer_new (image_ID, name,
width, height,
drawable_type,
100.0 * opacity / 255.0,
layer_mode);
if (layer_ID == -1)
{
g_message ("PSP: Error creating layer");
fclose (f);
gimp_image_delete (image_ID);
return -1;
}
g_free (name);
gimp_image_add_layer (image_ID, layer_ID, -1);
if (saved_image_rect[0] != 0 || saved_image_rect[1] != 0)
gimp_layer_set_offsets (layer_ID,
saved_image_rect[0], saved_image_rect[1]);
if (!visibility)
gimp_layer_set_visible (layer_ID, FALSE);
gimp_layer_set_preserve_transparency (layer_ID, transparency_protected);
if (major < 4)
if (try_fseek (f, sub_block_start + sub_init_len, SEEK_SET) < 0)
{
gimp_image_delete (image_ID);
return -1;
}
pixel = g_malloc0 (height * width * bytespp);
if (null_layer)
pixels = NULL;
else
{
pixels = g_new(guchar *, height);
for (i = 0; i < height; i++)
pixels[i] = pixel + width * bytespp * i;
}
drawable = gimp_drawable_get (layer_ID);
gimp_pixel_rgn_init (&pixel_rgn, drawable, 0, 0,
width, height, TRUE, FALSE);
gimp_tile_cache_size (tile_height * width * bytespp);
/* Read the layer channel sub-blocks */
while (ftell (f) < sub_block_start + sub_total_len)
{
sub_id = read_block_header (f, &channel_init_len,
&channel_total_len);
if (sub_id == -1)
{
gimp_image_delete (image_ID);
return -1;
}
if (sub_id != PSP_CHANNEL_BLOCK)
{
g_message ("PSP: Invalid layer sub-block %s, should be CHANNEL",
block_name (sub_id));
fclose (f);
gimp_image_delete (image_ID);
return -1;
}
channel_start = ftell (f);
if (major == 4)
fseek (f, 4, SEEK_CUR); /* Unknown field */
if (fread (&compressed_len, 4, 1, f) < 1
|| fread (&uncompressed_len, 4, 1, f) < 1
|| fread (&bitmap_type, 2, 1, f) < 1
|| fread (&channel_type, 2, 1, f) < 1)
{
g_message ("PSP: Error reading channel information chunk");
fclose (f);
gimp_image_delete (image_ID);
return -1;
}
compressed_len = GUINT32_FROM_LE (compressed_len);
uncompressed_len = GUINT32_FROM_LE (uncompressed_len);
bitmap_type = GUINT16_FROM_LE (bitmap_type);
channel_type = GUINT16_FROM_LE (channel_type);
if (bitmap_type > PSP_DIB_USER_MASK)
{
g_message ("PSP: Invalid bitmap type %d "
"in channel information chunk",
bitmap_type);
fclose (f);
gimp_image_delete (image_ID);
return -1;
}
if (channel_type > PSP_CHANNEL_BLUE)
{
g_message ("PSP: Invalid channel type %d "
"in channel information chunk",
channel_type);
fclose (f);
gimp_image_delete (image_ID);
return -1;
}
IFDBG(2) g_message ("PSP: channel: %s %s %d (%d) bytes "
"%d bytespp",
bitmap_type_name (bitmap_type),
channel_type_name (channel_type),
uncompressed_len, compressed_len,
bytespp);
if (bitmap_type == PSP_DIB_TRANS_MASK)
offset = 3;
else
offset = channel_type - PSP_CHANNEL_RED;
if (major < 4)
if (try_fseek (f, channel_start + channel_init_len, SEEK_SET) < 0)
{
gimp_image_delete (image_ID);
return -1;
}
if (!null_layer)
if (read_channel_data (f, ia, pixels, bytespp,
offset, drawable, compressed_len) == -1)
{
gimp_image_delete (image_ID);
return -1;
}
if (try_fseek (f, channel_start + channel_total_len, SEEK_SET) < 0)
{
gimp_image_delete (image_ID);
return -1;
}
}
gimp_pixel_rgn_set_rect (&pixel_rgn, pixel, 0, 0, width, height);
gimp_drawable_flush (drawable);
gimp_drawable_detach (drawable);
g_free (pixels);
g_free (pixel);
}
if (try_fseek (f, block_start + total_len, SEEK_SET) < 0)
{
gimp_image_delete (image_ID);
return -1;
}
return layer_ID;
}
static int
read_tube_block (FILE *f,
gint image_ID,
guint total_len,
PSPimage *ia)
{
guint16 version;
guchar name[514];
guint32 step_size, column_count, row_count, cell_count;
guint32 placement_mode, selection_mode;
gint i;
PixPipeParams params;
Parasite *pipe_parasite;
gchar *parasite_text;
pixpipeparams_init (&params);
if (fread (&version, 2, 1, f) < 1
|| fread (name, 513, 1, f) < 1
|| fread (&step_size, 4, 1, f) < 1
|| fread (&column_count, 4, 1, f) < 1
|| fread (&row_count, 4, 1, f) < 1
|| fread (&cell_count, 4, 1, f) < 1
|| fread (&placement_mode, 4, 1, f) < 1
|| fread (&selection_mode, 4, 1, f) < 1)
{
g_message ("PSP: Error reading tube data chunk");
fclose (f);
gimp_image_delete (image_ID);
return -1;
}
name[513] = 0;
version = GUINT16_FROM_LE (version);
params.step = GUINT32_FROM_LE (step_size);
params.cols = GUINT32_FROM_LE (column_count);
params.rows = GUINT32_FROM_LE (row_count);
params.ncells = GUINT32_FROM_LE (cell_count);
placement_mode = GUINT32_FROM_LE (placement_mode);
selection_mode = GUINT32_FROM_LE (selection_mode);
for (i = 1; i < column_count; i++)
gimp_image_add_vguide (image_ID, (ia->width * i)/column_count);
for (i = 1; i < row_count; i++)
gimp_image_add_hguide (image_ID, (ia->height * i)/row_count);
/* We use a parasite to pass in the tube (pipe) parameters in
* case we will have any use of those, for instance in the gpb
* plug-in that saves a GIMP image pipe.
*/
params.dim = 1;
params.cellwidth = ia->width / params.cols;
params.cellheight = ia->height / params.rows;
params.placement = (placement_mode == tpmRandom ? "random" :
(placement_mode == tpmConstant ? "constant" :
"default"));
params.rank[0] = params.ncells;
params.selection[0] = (selection_mode == tsmRandom ? "random" :
(selection_mode == tsmIncremental ? "incremental" :
(selection_mode == tsmAngular ? "angular" :
(selection_mode == tsmPressure ? "pressure" :
(selection_mode == tsmVelocity ? "velocity" :
"default")))));
parasite_text = pixpipeparams_build (&params);
IFDBG(2) g_message ("parasite: %s", parasite_text);
pipe_parasite = parasite_new ("gimp-brush-pipe-parameters",
PARASITE_PERSISTENT,
strlen (parasite_text) + 1, parasite_text);
gimp_image_parasite_attach (image_ID, pipe_parasite);
parasite_free (pipe_parasite);
g_free (parasite_text);
}
static char *
compression_name (int compression)
{
switch (compression)
{
case PSP_COMP_NONE:
return "no compression";
case PSP_COMP_RLE:
return "RLE";
case PSP_COMP_LZ77:
return "LZ77";
}
g_assert_not_reached ();
}
static gint32
load_image (char *filename)
{
FILE *f;
struct stat st;
char buf[32];
PSPimage ia;
guint32 block_init_len, block_total_len;
long block_start;
PSPBlockID id;
gint block_number;
GPixelRgn pixel_rgn;
gint32 image_ID = -1;
gint32 layer_ID;
GDrawable *drawable;
if (stat (filename, &st) == -1)
return -1;
f = fopen (filename, "rb");
if (f == NULL)
return -1;
/* Read thePSP File Header */
if (fread (buf, 32, 1, f) < 1
|| fread (&major, 2, 1, f) < 1
|| fread (&minor, 2, 1, f) < 1)
{
g_message ("PSP: Error reading file header");
fclose (f);
return -1;
}
if (memcmp (buf, "Paint Shop Pro Image File\n\032\0\0\0\0\0", 32) != 0)
{
g_message ("PSP: Incorrect file signature");
fclose (f);
return -1;
}
major = GUINT16_FROM_LE (major);
minor = GUINT16_FROM_LE (minor);
/* I only have the documentation for file format version 3.0,
* but PSP 6 writes version 4.0. Let's hope it's backwards compatible.
* Earlier versions probably don't have all the fields I expect
* so don't accept those.
*/
if (major < 3)
{
g_message ("PSP: Unsupported PSP file format version "
"%d.%d, only knows 3.0 (and later?)",
major, minor);
fclose (f);
return -1;
}
else if (major == 3)
; /* OK */
else if (major == 4 && minor == 0)
g_message ("PSP: Warning: PSP file format version "
"4.0. Support for this format version "
"is based on reverse engineering, "
"as no documentation has been made available");
else
{
g_message ("PSP: Unsupported PSP file format version %d.%d",
major, minor);
fclose (f);
return -1;
}
/* Read all the blocks */
block_number = 0;
IFDBG(3) g_message ("PSP: size = %d", st.st_size);
while (ftell (f) != st.st_size
&& (id = read_block_header (f, &block_init_len,
&block_total_len)) != -1)
{
block_start = ftell (f);
if (id == PSP_IMAGE_BLOCK)
{
if (block_number != 0)
{
g_message ("PSP: Duplicate General Image Attributes block");
fclose (f);
return -1;
}
if (read_general_image_attribute_block (f, block_init_len,
block_total_len, &ia) == -1)
return -1;
IFDBG(2) g_message ("PSP: %d dpi %dx%d %s",
(int) ia.resolution,
ia.width, ia.height,
compression_name (ia.compression));
image_ID = gimp_image_new (ia.width, ia.height,
ia.greyscale ? GRAY : RGB);
if (image_ID == -1)
return -1;
gimp_image_set_filename (image_ID, filename);
gimp_image_set_resolution (image_ID, (int) ia.resolution,
(int) ia.resolution);
}
else
{
if (block_number == 0)
{
g_message ("PSP: Missing General Image Attributes block");
fclose (f);
gimp_image_delete (image_ID);
return -1;
}
switch (id)
{
case PSP_CREATOR_BLOCK:
if (read_creator_block (f, image_ID, block_total_len, &ia) == -1)
return -1;
break;
case PSP_COLOR_BLOCK:
break; /* Not yet implemented */
case PSP_LAYER_START_BLOCK:
if (read_layer_block (f, image_ID, block_total_len, &ia) == -1)
return -1;
break;
case PSP_SELECTION_BLOCK:
break; /* Not yet implemented */
case PSP_ALPHA_BANK_BLOCK:
break; /* Not yet implemented */
case PSP_THUMBNAIL_BLOCK:
break; /* No use for it */
case PSP_EXTENDED_DATA_BLOCK:
break; /* Not yet implemented */
case PSP_TUBE_BLOCK:
if (read_tube_block (f, image_ID, block_total_len, &ia) == -1)
return -1;
break;
case PSP_LAYER_BLOCK:
case PSP_CHANNEL_BLOCK:
case PSP_ALPHA_CHANNEL_BLOCK:
g_message ("PSP: Sub-block %s should not occur "
"at main level of file",
block_name (id));
break;
default:
g_message ("PSP: Unrecognized block id %d", id);
break;
}
}
if (block_start + block_total_len >= st.st_size)
break;
if (try_fseek (f, block_start + block_total_len, SEEK_SET) < 0)
{
gimp_image_delete (image_ID);
return -1;
}
block_number++;
}
if (id == -1)
{
fclose (f);
gimp_image_delete (image_ID);
return -1;
}
fclose (f);
return image_ID;
}
static gint
save_image (char *filename,
gint32 image_ID,
gint32 drawable_ID)
{
g_message ("PSP: Saving not implemented yet");
return 0;
}
static void
run (char *name,
int nparams,
GParam *param,
int *nreturn_vals,
GParam **return_vals)
{
static GParam values[2];
GRunModeType run_mode;
GStatusType status = STATUS_SUCCESS;
GimpExportReturnType export = EXPORT_CANCEL;
gint32 image_ID;
gint32 drawable_ID;
tile_height = gimp_tile_height ();
run_mode = param[0].data.d_int32;
*nreturn_vals = 1;
*return_vals = values;
values[0].type = PARAM_STATUS;
values[0].data.d_status = STATUS_CALLING_ERROR;
if (strcmp (name, "file_psp_load") == 0)
{
image_ID = load_image (param[1].data.d_string);
if (image_ID != -1)
{
*nreturn_vals = 2;
values[0].data.d_status = STATUS_SUCCESS;
values[1].type = PARAM_IMAGE;
values[1].data.d_image = image_ID;
}
else
{
values[0].data.d_status = STATUS_EXECUTION_ERROR;
}
}
else if (strcmp (name, "file_psp_save") == 0)
{
image_ID = param[1].data.d_int32;
drawable_ID = param[2].data.d_int32;
/* eventually export the image */
switch (run_mode)
{
case RUN_INTERACTIVE:
case RUN_WITH_LAST_VALS:
INIT_I18N_UI();
init_gtk ();
export = gimp_export_image (&image_ID, &drawable_ID, "PSP",
(CAN_HANDLE_RGB | CAN_HANDLE_GRAY | CAN_HANDLE_INDEXED | CAN_HANDLE_ALPHA | CAN_HANDLE_LAYERS));
if (export == EXPORT_CANCEL)
{
*nreturn_vals = 1;
values[0].data.d_status = STATUS_EXECUTION_ERROR;
return;
}
break;
default:
break;
}
switch (run_mode)
{
case RUN_INTERACTIVE:
/* Possibly retrieve data */
gimp_get_data ("file_pnm_save", &psvals);
/* First acquire information with a dialog */
if (! save_dialog ())
return;
break;
case RUN_NONINTERACTIVE:
/* Make sure all the arguments are there! */
if (nparams != 6
|| param[5].data.d_int32 < 0
|| param[5].data.d_int32 > PSP_COMP_LZ77)
status = STATUS_CALLING_ERROR;
if (status == STATUS_SUCCESS)
{
psvals.compression = (param[5].data.d_int32) ? TRUE : FALSE;
}
case RUN_WITH_LAST_VALS:
gimp_get_data ("file_psp_save", &psvals);
break;
default:
break;
}
if (status == STATUS_SUCCESS)
{
if (save_image (param[3].data.d_string, image_ID, drawable_ID))
{
gimp_set_data ("file_psp_save", &psvals, sizeof (PSPSaveVals));
status = STATUS_SUCCESS;
}
else
status = STATUS_EXECUTION_ERROR;
}
values[0].data.d_status = status;
if (export == EXPORT_EXPORT)
gimp_image_delete (image_ID);
}
}
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