858 lines
25 KiB
C
858 lines
25 KiB
C
/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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* Alias|Wavefront pix/matte image reading and writing code
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* Copyright (C) 1997 Mike Taylor
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* (email: mtaylor@aw.sgi.com, WWW: http://reality.sgi.com/mtaylor)
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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/* This plug-in was written using the online documentation from
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* Alias|Wavefront Inc's PowerAnimator product.
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*
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* Bug reports or suggestions should be e-mailed to mtaylor@aw.sgi.com
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*/
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/* Event history:
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* V 1.0, MT, 02-Jul-97: initial version of plug-in
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* V 1.1, MT, 04-Dec-97: added .als file extension
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*/
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/* Features
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* - loads and exports
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* - 24-bit (.pix)
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* - 8-bit (.matte, .alpha, or .mask) images
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*
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* NOTE: pix and matte files do not support alpha channels or indexed
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* color, so neither does this plug-in
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*/
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#include "config.h"
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#include <errno.h>
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#include <string.h>
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#include <glib/gstdio.h>
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#include <libpika/pika.h>
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#include <libpika/pikaui.h>
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#include "libpika/stdplugins-intl.h"
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#define LOAD_PROC "file-pix-load"
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#define SAVE_PROC "file-pix-save"
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#define PLUG_IN_BINARY "file-pix"
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#define PLUG_IN_ROLE "pika-file-pix"
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/* #define PIX_DEBUG */
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#ifdef PIX_DEBUG
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# define PIX_DEBUG_PRINT(a,b) g_printerr (a,b)
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#else
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# define PIX_DEBUG_PRINT(a,b)
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#endif
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typedef struct _Pix Pix;
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typedef struct _PixClass PixClass;
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struct _Pix
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{
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PikaPlugIn parent_instance;
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};
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struct _PixClass
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{
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PikaPlugInClass parent_class;
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};
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#define PIX_TYPE (pix_get_type ())
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#define PIX (obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), PIX_TYPE, Pix))
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GType pix_get_type (void) G_GNUC_CONST;
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static GList * pix_query_procedures (PikaPlugIn *plug_in);
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static PikaProcedure * pix_create_procedure (PikaPlugIn *plug_in,
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const gchar *name);
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static PikaValueArray * pix_load (PikaProcedure *procedure,
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PikaRunMode run_mode,
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GFile *file,
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const PikaValueArray *args,
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gpointer run_data);
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static PikaValueArray * pix_save (PikaProcedure *procedure,
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PikaRunMode run_mode,
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PikaImage *image,
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gint n_drawables,
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PikaDrawable **drawables,
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GFile *file,
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const PikaValueArray *args,
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gpointer run_data);
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static PikaImage * load_image (GFile *file,
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GError **error);
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static PikaImage * load_esm_image (GInputStream *input,
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GError **error);
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static gboolean save_image (GFile *file,
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PikaImage *image,
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PikaDrawable *drawable,
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GError **error);
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static gboolean get_short (GInputStream *input,
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guint16 *value,
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GError **error);
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static gboolean put_short (GOutputStream *output,
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guint16 value,
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GError **error);
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G_DEFINE_TYPE (Pix, pix, PIKA_TYPE_PLUG_IN)
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PIKA_MAIN (PIX_TYPE)
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DEFINE_STD_SET_I18N
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static void
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pix_class_init (PixClass *klass)
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{
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PikaPlugInClass *plug_in_class = PIKA_PLUG_IN_CLASS (klass);
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plug_in_class->query_procedures = pix_query_procedures;
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plug_in_class->create_procedure = pix_create_procedure;
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plug_in_class->set_i18n = STD_SET_I18N;
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}
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static void
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pix_init (Pix *pix)
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{
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}
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static GList *
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pix_query_procedures (PikaPlugIn *plug_in)
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{
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GList *list = NULL;
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list = g_list_append (list, g_strdup (LOAD_PROC));
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list = g_list_append (list, g_strdup (SAVE_PROC));
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return list;
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}
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static PikaProcedure *
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pix_create_procedure (PikaPlugIn *plug_in,
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const gchar *name)
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{
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PikaProcedure *procedure = NULL;
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if (! strcmp (name, LOAD_PROC))
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{
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procedure = pika_load_procedure_new (plug_in, name,
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PIKA_PDB_PROC_TYPE_PLUGIN,
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pix_load, NULL, NULL);
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pika_file_procedure_set_handles_remote (PIKA_FILE_PROCEDURE (procedure),
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TRUE);
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pika_procedure_set_menu_label (procedure, _("Alias Pix image"));
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pika_procedure_set_documentation (procedure,
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"Loads files of the Alias|Wavefront "
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"or Esm Software Pix file format",
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"Loads files of the Alias|Wavefront "
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"or Esm Software Pix file format",
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name);
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pika_procedure_set_attribution (procedure,
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"Michael Taylor",
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"Michael Taylor",
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"1997");
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pika_file_procedure_set_extensions (PIKA_FILE_PROCEDURE (procedure),
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"pix,matte,mask,alpha,als");
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/* Magic Number for Esm Software PIX files */
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pika_file_procedure_set_magics (PIKA_FILE_PROCEDURE (procedure),
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"0,string,Esm Software PIX file");
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}
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else if (! strcmp (name, SAVE_PROC))
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{
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procedure = pika_save_procedure_new (plug_in, name,
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PIKA_PDB_PROC_TYPE_PLUGIN,
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pix_save, NULL, NULL);
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pika_procedure_set_image_types (procedure, "*");
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pika_file_procedure_set_handles_remote (PIKA_FILE_PROCEDURE (procedure),
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TRUE);
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pika_procedure_set_menu_label (procedure, _("Alias Pix image"));
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pika_procedure_set_documentation (procedure,
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"Export file in the Alias|Wavefront "
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"pix/matte file format",
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"Export file in the Alias|Wavefront "
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"pix/matte file format",
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name);
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pika_procedure_set_attribution (procedure,
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"Michael Taylor",
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"Michael Taylor",
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"1997");
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pika_file_procedure_set_extensions (PIKA_FILE_PROCEDURE (procedure),
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"pix,matte,mask,alpha,als");
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}
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return procedure;
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}
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static PikaValueArray *
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pix_load (PikaProcedure *procedure,
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PikaRunMode run_mode,
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GFile *file,
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const PikaValueArray *args,
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gpointer run_data)
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{
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PikaValueArray *return_vals;
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PikaImage *image;
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GError *error = NULL;
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gegl_init (NULL, NULL);
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image = load_image (file, &error);
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if (! image)
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return pika_procedure_new_return_values (procedure,
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PIKA_PDB_EXECUTION_ERROR,
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error);
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return_vals = pika_procedure_new_return_values (procedure,
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PIKA_PDB_SUCCESS,
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NULL);
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PIKA_VALUES_SET_IMAGE (return_vals, 1, image);
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return return_vals;
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}
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static PikaValueArray *
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pix_save (PikaProcedure *procedure,
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PikaRunMode run_mode,
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PikaImage *image,
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gint n_drawables,
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PikaDrawable **drawables,
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GFile *file,
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const PikaValueArray *args,
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gpointer run_data)
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{
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PikaPDBStatusType status = PIKA_PDB_SUCCESS;
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PikaExportReturn export = PIKA_EXPORT_CANCEL;
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GError *error = NULL;
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gegl_init (NULL, NULL);
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switch (run_mode)
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{
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case PIKA_RUN_INTERACTIVE:
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case PIKA_RUN_WITH_LAST_VALS:
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pika_ui_init (PLUG_IN_BINARY);
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export = pika_export_image (&image, &n_drawables, &drawables, "PIX",
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PIKA_EXPORT_CAN_HANDLE_RGB |
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PIKA_EXPORT_CAN_HANDLE_GRAY |
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PIKA_EXPORT_CAN_HANDLE_INDEXED);
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if (export == PIKA_EXPORT_CANCEL)
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return pika_procedure_new_return_values (procedure,
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PIKA_PDB_CANCEL,
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NULL);
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break;
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default:
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break;
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}
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if (n_drawables != 1)
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{
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g_set_error (&error, G_FILE_ERROR, 0,
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_("PIX format does not support multiple layers."));
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return pika_procedure_new_return_values (procedure,
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PIKA_PDB_CALLING_ERROR,
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error);
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}
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if (! save_image (file, image, drawables[0], &error))
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{
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status = PIKA_PDB_EXECUTION_ERROR;
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}
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if (export == PIKA_EXPORT_EXPORT)
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{
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pika_image_delete (image);
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g_free (drawables);
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}
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return pika_procedure_new_return_values (procedure, status, error);
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}
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/*
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* Description:
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* Reads a 16-bit integer from a file in such a way that the machine's
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* byte order should not matter.
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*/
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static gboolean
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get_short (GInputStream *input,
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guint16 *value,
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GError **error)
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{
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guchar buf[2];
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gsize bytes_read;
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if (! g_input_stream_read_all (input, buf, 2,
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&bytes_read, NULL, error) ||
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bytes_read != 2)
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{
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return FALSE;
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}
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if (value)
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*value = (buf[0] << 8) + buf[1];
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return TRUE;
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}
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/*
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* Description:
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* Writes a 16-bit integer to a file in such a way that the machine's
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* byte order should not matter.
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*/
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static gboolean
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put_short (GOutputStream *output,
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guint16 value,
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GError **error)
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{
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guchar buf[2];
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buf[0] = (value >> 8) & 0xFF;
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buf[1] = value & 0xFF;
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return g_output_stream_write_all (output, buf, 2, NULL, NULL, error);
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}
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/*
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* Description:
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* load the given image into pika
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*
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* Arguments:
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* filename - name on the file to read
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*
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* Return Value:
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* Image id for the loaded image
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*
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*/
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static PikaImage *
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load_image (GFile *file,
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GError **error)
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{
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GInputStream *input;
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GeglBuffer *buffer;
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PikaImageBaseType imgtype;
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PikaImageType gdtype;
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guchar *dest;
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guchar *dest_base;
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PikaImage *image = NULL;
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PikaLayer *layer;
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gushort width, height, depth;
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gint i, j, tile_height, row;
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PIX_DEBUG_PRINT ("Opening file: %s\n", pika_file_get_utf8_name (file));
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pika_progress_init_printf (_("Opening '%s'"),
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g_file_get_parse_name (file));
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input = G_INPUT_STREAM (g_file_read (file, NULL, error));
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if (! input)
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return NULL;
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/* Read header information */
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if (! get_short (input, &width, error) ||
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! get_short (input, &height, error) ||
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! get_short (input, NULL, error) || /* Discard obsolete field */
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! get_short (input, NULL, error) || /* Discard obsolete field */
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! get_short (input, &depth, error))
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{
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g_object_unref (input);
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return NULL;
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}
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PIX_DEBUG_PRINT ("Width %hu\n", width);
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PIX_DEBUG_PRINT ("Height %hu\n", height);
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if (depth == 8)
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{
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/* Loading a matte file */
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imgtype = PIKA_GRAY;
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gdtype = PIKA_GRAY_IMAGE;
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}
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else if (depth == 24)
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{
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/* Loading an RGB file */
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imgtype = PIKA_RGB;
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gdtype = PIKA_RGB_IMAGE;
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}
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else
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{
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/* Check if this is Esm Software PIX file format */
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gchar esm_header[22];
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gsize bytes_read;
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g_seekable_seek (G_SEEKABLE (input), 0, G_SEEK_SET, NULL, NULL);
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if (g_input_stream_read_all (input, &esm_header, sizeof (esm_header),
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&bytes_read, NULL, NULL))
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{
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esm_header[21] = '\0';
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if (g_str_has_prefix (esm_header, "Esm Software PIX file"))
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image = load_esm_image (input, error);
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if (image)
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{
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g_object_unref (input);
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pika_progress_update (1.0);
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return image;
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}
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}
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/* Header is invalid */
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g_object_unref (input);
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return NULL;
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}
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image = pika_image_new (width, height, imgtype);
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layer = pika_layer_new (image, _("Background"),
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width, height,
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gdtype,
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100,
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pika_image_get_default_new_layer_mode (image));
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pika_image_insert_layer (image, layer, NULL, 0);
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buffer = pika_drawable_get_buffer (PIKA_DRAWABLE (layer));
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tile_height = pika_tile_height ();
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if (depth == 24)
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{
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/* Read a 24-bit Pix image */
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dest_base = dest = g_new (guchar, 3 * width * tile_height);
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for (i = 0; i < height;)
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{
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for (dest = dest_base, row = 0;
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row < tile_height && i < height;
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i++, row++)
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{
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guchar record[4];
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gsize bytes_read;
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guchar count;
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/* Read a row of the image */
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j = 0;
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while (j < width)
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{
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if (! g_input_stream_read_all (input, record, 4,
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&bytes_read, NULL, error) ||
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bytes_read != 4)
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break;
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for (count = 0; count < record[0]; ++count)
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{
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dest[0] = record[3];
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dest[1] = record[2];
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dest[2] = record[1];
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dest += 3;
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j++;
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if (j >= width)
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break;
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}
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}
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}
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gegl_buffer_set (buffer, GEGL_RECTANGLE (0, i - row, width, row), 0,
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NULL, dest_base, GEGL_AUTO_ROWSTRIDE);
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pika_progress_update ((double) i / (double) height);
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}
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g_free (dest_base);
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}
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else
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{
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/* Read an 8-bit Matte image */
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dest_base = dest = g_new (guchar, width * tile_height);
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for (i = 0; i < height;)
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{
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for (dest = dest_base, row = 0;
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row < tile_height && i < height;
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i++, row++)
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{
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guchar record[2];
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gsize bytes_read;
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guchar count;
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/* Read a row of the image */
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j = 0;
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while (j < width)
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{
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if (! g_input_stream_read_all (input, record, 2,
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&bytes_read, NULL, error) ||
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bytes_read != 2)
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break;
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for (count = 0; count < record[0]; ++count)
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{
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dest[j] = record[1];
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j++;
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if (j >= width)
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break;
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}
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}
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dest += width;
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}
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gegl_buffer_set (buffer, GEGL_RECTANGLE (0, i - row, width, row), 0,
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NULL, dest_base, GEGL_AUTO_ROWSTRIDE);
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pika_progress_update ((double) i / (double) height);
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}
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g_free (dest_base);
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}
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g_object_unref (buffer);
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g_object_unref (input);
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pika_progress_update (1.0);
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return image;
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}
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static PikaImage *
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load_esm_image (GInputStream *input,
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GError **error)
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{
|
|
PikaImage *image = NULL;
|
|
PikaValueArray *return_vals = NULL;
|
|
GFile *temp_file = NULL;
|
|
FILE *fp;
|
|
goffset file_size;
|
|
|
|
g_seekable_seek (G_SEEKABLE (input), 0, G_SEEK_END, NULL, error);
|
|
file_size = g_seekable_tell (G_SEEKABLE (input));
|
|
g_seekable_seek (G_SEEKABLE (input), 21, G_SEEK_SET, NULL, error);
|
|
|
|
/* Esm Software PIX format is just a JPEG with an extra 21 byte header */
|
|
temp_file = pika_temp_file ("jpeg");
|
|
fp = g_fopen (g_file_peek_path (temp_file), "wb");
|
|
|
|
if (! fp)
|
|
{
|
|
g_file_delete (temp_file, NULL, NULL);
|
|
g_object_unref (temp_file);
|
|
|
|
g_message (_("Error trying to open temporary JPEG file '%s' "
|
|
"for Esm Software pix loading: %s"),
|
|
pika_file_get_utf8_name (temp_file),
|
|
g_strerror (errno));
|
|
return NULL;
|
|
}
|
|
else
|
|
{
|
|
guchar buffer[file_size - 21];
|
|
|
|
if (! g_input_stream_read_all (input, buffer, sizeof (buffer),
|
|
NULL, NULL, error))
|
|
{
|
|
g_file_delete (temp_file, NULL, NULL);
|
|
g_object_unref (temp_file);
|
|
|
|
g_printerr (_("Invalid Esm Software PIX file"));
|
|
return NULL;
|
|
}
|
|
|
|
fwrite (buffer, sizeof (guchar), file_size, fp);
|
|
fclose (fp);
|
|
|
|
return_vals =
|
|
pika_pdb_run_procedure (pika_get_pdb (),
|
|
"file-jpeg-load",
|
|
PIKA_TYPE_RUN_MODE, PIKA_RUN_NONINTERACTIVE,
|
|
G_TYPE_FILE, temp_file,
|
|
G_TYPE_NONE);
|
|
|
|
if (return_vals)
|
|
{
|
|
image = g_value_get_object (pika_value_array_index (return_vals, 1));
|
|
|
|
pika_value_array_unref (return_vals);
|
|
}
|
|
|
|
g_file_delete (temp_file, NULL, NULL);
|
|
g_object_unref (temp_file);
|
|
}
|
|
|
|
return image;
|
|
}
|
|
|
|
/*
|
|
* Description:
|
|
* save the given file out as an alias pix or matte file
|
|
*
|
|
* Arguments:
|
|
* filename - name of file to save to
|
|
* image - image to save
|
|
* drawable - current drawable
|
|
*/
|
|
|
|
static gboolean
|
|
save_image (GFile *file,
|
|
PikaImage *image,
|
|
PikaDrawable *drawable,
|
|
GError **error)
|
|
{
|
|
GOutputStream *output;
|
|
GeglBuffer *buffer;
|
|
const Babl *format;
|
|
GCancellable *cancellable;
|
|
gint width;
|
|
gint height;
|
|
gint depth, i, j, row, tile_height, rectHeight;
|
|
gboolean savingColor = TRUE;
|
|
guchar *src;
|
|
guchar *src_base;
|
|
|
|
pika_progress_init_printf (_("Exporting '%s'"),
|
|
g_file_get_parse_name (file));
|
|
|
|
output = G_OUTPUT_STREAM (g_file_replace (file,
|
|
NULL, FALSE, G_FILE_CREATE_NONE,
|
|
NULL, error));
|
|
if (! output)
|
|
return FALSE;
|
|
|
|
/* Get info about image */
|
|
buffer = pika_drawable_get_buffer (drawable);
|
|
|
|
width = gegl_buffer_get_width (buffer);
|
|
height = gegl_buffer_get_height (buffer);
|
|
|
|
savingColor = ! pika_drawable_is_gray (drawable);
|
|
|
|
if (savingColor)
|
|
format = babl_format ("R'G'B' u8");
|
|
else
|
|
format = babl_format ("Y' u8");
|
|
|
|
depth = babl_format_get_bytes_per_pixel (format);
|
|
|
|
/* Write the image header */
|
|
PIX_DEBUG_PRINT ("Width %hu\n", width);
|
|
PIX_DEBUG_PRINT ("Height %hu\n", height);
|
|
|
|
if (! put_short (output, width, error) ||
|
|
! put_short (output, height, error) ||
|
|
! put_short (output, 0, error) ||
|
|
! put_short (output, 0, error))
|
|
{
|
|
cancellable = g_cancellable_new ();
|
|
g_cancellable_cancel (cancellable);
|
|
g_output_stream_close (output, cancellable, NULL);
|
|
g_object_unref (cancellable);
|
|
|
|
g_object_unref (output);
|
|
g_object_unref (buffer);
|
|
return FALSE;
|
|
}
|
|
|
|
tile_height = pika_tile_height ();
|
|
src_base = g_new (guchar, tile_height * width * depth);
|
|
|
|
if (savingColor)
|
|
{
|
|
/* Writing a 24-bit Pix image */
|
|
|
|
if (! put_short (output, 24, error))
|
|
goto fail;
|
|
|
|
for (i = 0; i < height;)
|
|
{
|
|
rectHeight = (tile_height < (height - i)) ?
|
|
tile_height : (height - i);
|
|
|
|
gegl_buffer_get (buffer, GEGL_RECTANGLE (0, i, width, rectHeight), 1.0,
|
|
format, src_base,
|
|
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
|
|
|
|
for (src = src_base, row = 0;
|
|
row < tile_height && i < height;
|
|
i += 1, row += 1)
|
|
{
|
|
/* Write a row of the image */
|
|
|
|
guchar record[4];
|
|
|
|
record[0] = 1;
|
|
record[3] = src[0];
|
|
record[2] = src[1];
|
|
record[1] = src[2];
|
|
src += depth;
|
|
for (j = 1; j < width; ++j)
|
|
{
|
|
if ((record[3] != src[0]) ||
|
|
(record[2] != src[1]) ||
|
|
(record[1] != src[2]) ||
|
|
(record[0] == 255))
|
|
{
|
|
/* Write current RLE record and start a new one */
|
|
|
|
if (! g_output_stream_write_all (output, record, 4,
|
|
NULL, NULL, error))
|
|
{
|
|
goto fail;
|
|
}
|
|
|
|
record[0] = 1;
|
|
record[3] = src[0];
|
|
record[2] = src[1];
|
|
record[1] = src[2];
|
|
}
|
|
else
|
|
{
|
|
/* increment run length in current record */
|
|
record[0]++;
|
|
}
|
|
src += depth;
|
|
}
|
|
|
|
/* Write last record in row */
|
|
|
|
if (! g_output_stream_write_all (output, record, 4,
|
|
NULL, NULL, error))
|
|
{
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
pika_progress_update ((double) i / (double) height);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Writing a 8-bit Matte (Mask) image */
|
|
|
|
if (! put_short (output, 8, error))
|
|
goto fail;
|
|
|
|
for (i = 0; i < height;)
|
|
{
|
|
rectHeight = (tile_height < (height - i)) ?
|
|
tile_height : (height - i);
|
|
|
|
gegl_buffer_get (buffer, GEGL_RECTANGLE (0, i, width, rectHeight), 1.0,
|
|
format, src_base,
|
|
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
|
|
|
|
for (src = src_base, row = 0;
|
|
row < tile_height && i < height;
|
|
i += 1, row += 1)
|
|
{
|
|
/* Write a row of the image */
|
|
|
|
guchar record[2];
|
|
|
|
record[0] = 1;
|
|
record[1] = src[0];
|
|
src += depth;
|
|
for (j = 1; j < width; ++j)
|
|
{
|
|
if ((record[1] != src[0]) || (record[0] == 255))
|
|
{
|
|
/* Write current RLE record and start a new one */
|
|
|
|
if (! g_output_stream_write_all (output, record, 2,
|
|
NULL, NULL, error))
|
|
{
|
|
goto fail;
|
|
}
|
|
|
|
record[0] = 1;
|
|
record[1] = src[0];
|
|
}
|
|
else
|
|
{
|
|
/* increment run length in current record */
|
|
record[0] ++;
|
|
}
|
|
src += depth;
|
|
}
|
|
|
|
/* Write last record in row */
|
|
|
|
if (! g_output_stream_write_all (output, record, 2,
|
|
NULL, NULL, error))
|
|
{
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
pika_progress_update ((double) i / (double) height);
|
|
}
|
|
}
|
|
|
|
g_free (src_base);
|
|
g_object_unref (output);
|
|
g_object_unref (buffer);
|
|
|
|
pika_progress_update (1.0);
|
|
|
|
return TRUE;
|
|
|
|
fail:
|
|
|
|
cancellable = g_cancellable_new ();
|
|
g_cancellable_cancel (cancellable);
|
|
g_output_stream_close (output, cancellable, NULL);
|
|
g_object_unref (cancellable);
|
|
|
|
g_free (src_base);
|
|
g_object_unref (output);
|
|
g_object_unref (buffer);
|
|
|
|
return FALSE;
|
|
}
|
