624 lines
17 KiB
C
624 lines
17 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) 1995-1999 Spencer Kimball and Peter Mattis
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*
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* file-icns-load.c
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* Copyright (C) 2004 Brion Vibber <brion@pobox.com>
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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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#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 <png.h>
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/* #define ICNS_DBG */
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#include "file-icns.h"
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#include "file-icns-data.h"
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#include "file-icns-load.h"
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#include "libpika/stdplugins-intl.h"
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IcnsResource * resource_load (FILE *file);
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IcnsResource * resource_find (IcnsResource *list,
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gchar *type,
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gint max);
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gboolean resource_get_next (IcnsResource *icns,
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IcnsResource *res);
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void icns_slurp (guchar *dest,
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IconType *icontype,
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IcnsResource *icns,
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IcnsResource *mask);
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gboolean icns_decompress (guchar *dest,
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IconType *icontype,
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IcnsResource *image,
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IcnsResource *mask);
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void icns_attach_image (PikaImage *image,
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IconType *icontype,
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IcnsResource *icns,
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IcnsResource *mask,
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gboolean isOSX);
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PikaImage * icns_load (IcnsResource *icns,
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GFile *file);
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/* Ported from Brion Vibber's icnsload.c code, under the GPL license, version 3
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* or any later version of the license */
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IcnsResource *
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resource_load (FILE *file)
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{
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IcnsResource *res = NULL;
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if (file)
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{
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IcnsResourceHeader header;
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if (1 == fread (&header, sizeof (IcnsResourceHeader), 1, file))
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{
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gchar type[5];
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guint32 size;
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strncpy (type, header.type, 4);
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type[4] = '\0';
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size = GUINT32_FROM_BE (header.size);
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if (! strncmp (header.type, "icns", 4) && size > sizeof (IcnsResourceHeader))
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{
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res = (IcnsResource *) g_new (guchar, sizeof (IcnsResource) + size);
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strncpy (res->type, header.type, 4);
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res->type[4] = '\0';
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res->size = size;
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res->cursor = sizeof (IcnsResourceHeader);
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res->data = (guchar *) res + sizeof (IcnsResource);
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fseek (file, 0, SEEK_SET);
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if (size != fread (res->data, 1, res->size, file))
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{
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g_message ("** expected %d bytes\n", size);
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g_free (res);
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res = NULL;
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}
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}
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}
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else
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{
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g_message (("** couldn't read icns header.\n"));
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}
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}
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else
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{
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g_message (("** couldn't open file.\n"));
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}
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return res;
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}
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IcnsResource *
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resource_find (IcnsResource *list,
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gchar *type,
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gint max)
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{
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for (gint i = 0; i < max; i++)
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{
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if (! strncmp (list[i].type, type, 4))
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return &list[i];
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}
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return NULL;
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}
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gboolean
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resource_get_next (IcnsResource *icns,
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IcnsResource *res)
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{
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IcnsResourceHeader *header;
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if (icns->size - icns->cursor < sizeof (IcnsResourceHeader))
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return FALSE;
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header = (IcnsResourceHeader *) &(icns->data[icns->cursor]);
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strncpy (res->type, header->type, 4);
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res->size = GUINT32_FROM_BE (header->size);
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res->cursor = sizeof (IcnsResourceHeader);
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res->data = &(icns->data[icns->cursor]);
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icns->cursor += res->size;
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if (icns->cursor > icns->size)
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{
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gchar typestring[5];
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fourcc_get_string (icns->type, typestring);
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g_message ("icns resource_get_next: resource too big! type '%s', size %u\n",
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typestring, icns->size);
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return FALSE;
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}
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return TRUE;
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}
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PikaImage *
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icns_load (IcnsResource *icns,
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GFile *file)
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{
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IcnsResource *resources;
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guint nResources;
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gfloat current_resources = 0;
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PikaImage *image;
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resources = g_new (IcnsResource, 256);
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/* Largest .icns icon is 1024 x 1024 */
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image = pika_image_new (1024, 1024, PIKA_RGB);
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nResources = 0;
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while (resource_get_next (icns, &resources[nResources++])) {}
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for (gint i = 0; iconTypes[i].type; i++)
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{
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IcnsResource *icns;
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IcnsResource *mask = NULL;
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if ((icns = resource_find (resources, iconTypes[i].type, nResources)))
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{
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if (! iconTypes[i].isModern)
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mask = resource_find (resources, iconTypes[i].mask, nResources);
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icns_attach_image (image, &iconTypes[i], icns, mask, iconTypes[i].isModern);
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pika_progress_update (current_resources++ / nResources);
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}
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}
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pika_image_resize_to_layers (image);
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g_free (resources);
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return image;
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}
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void
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icns_slurp (guchar *dest,
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IconType *icontype,
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IcnsResource *icns,
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IcnsResource *mask)
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{
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guint out;
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guint max;
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guchar bucket = 0;
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guchar bit;
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guint index;
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max = icontype->width * icontype->height;
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icns->cursor = sizeof (IcnsResourceHeader);
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switch (icontype->bits)
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{
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case 1:
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for (out = 0; out < max; out++)
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{
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if (out % 8 == 0)
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bucket = icns->data[icns->cursor++];
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bit = (bucket & 0x80) ? 0 : 255;
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bucket = bucket << 1;
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dest[out * 4] = bit;
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dest[out * 4 + 1] = bit;
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dest[out * 4 + 2] = bit;
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}
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break;
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case 4:
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for (out = 0; out < max; out++)
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{
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if (out % 2 == 0)
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bucket = icns->data[icns->cursor++];
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index = 3 * (bucket & 0xf0) >> 4;
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bucket = bucket << 4;
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dest[out * 4] = icns_colormap_4[index];
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dest[out * 4 + 1] = icns_colormap_4[index + 1];
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dest[out * 4 + 2] = icns_colormap_4[index + 2];
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}
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break;
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case 8:
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for (out = 0; out < max; out++)
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{
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index = 3 * icns->data[icns->cursor++];
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dest[out * 4] = icns_colormap_8[index];
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dest[out * 4 + 1] = icns_colormap_8[index + 1];
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dest[out * 4 + 2] = icns_colormap_8[index + 2];
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dest[out * 4 + 3] = 255;
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}
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break;
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case 32:
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for (out = 0; out < max; out++)
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{
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dest[out * 4] = icns->data[icns->cursor++];
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dest[out * 4 + 1] = icns->data[icns->cursor++];
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dest[out * 4 + 2] = icns->data[icns->cursor++];
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/* Throw away alpha, use the mask */
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icns->cursor++;
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if (mask)
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dest[out * 4 + 3] = icns->data[mask->cursor++];
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else
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dest[out * 4 + 3] = 255;
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}
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break;
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}
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/* Now for the mask */
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if (mask && icontype->bits != 32)
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{
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mask->cursor = sizeof (IcnsResourceHeader) + icontype->width * icontype->height / 8;
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for (out = 0; out < max; out++)
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{
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if (out % 8 == 0)
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bucket = mask->data[mask->cursor++];
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bit = (bucket & 0x80) ? 255 : 0;
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bucket = bucket << 1;
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dest[out * 4 + 3] = bit;
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}
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}
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}
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gboolean
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icns_decompress (guchar *dest,
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IconType *icontype,
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IcnsResource *image,
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IcnsResource *mask)
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{
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guint max;
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guint channel;
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guint out;
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guchar run;
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guchar val;
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gint n_channels = 3;
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max = icontype->width * icontype->height;
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memset (dest, 255, max * 4);
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/* For some reason there seem to be 4 null bytes at the start of an it32. */
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if (! strncmp (icontype->type, "it32", 4))
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image->cursor += 4;
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for (channel = 0; channel < n_channels; channel++)
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{
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out = 0;
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while (out < max)
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{
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run = image->data[image->cursor++];
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if (run & 0x80)
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{
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/* Compressed */
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if (image->cursor >= image->size)
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{
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g_message ("Corrupt icon: compressed run overflows input size.");
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return FALSE;
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}
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val = image->data[image->cursor++];
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for (run -= 125; run > 0; run--)
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{
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if (out >= max)
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{
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g_message ("Corrupt icon? compressed run overflows output size.");
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return FALSE;
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}
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dest[out++ * 4 + channel] = val;
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}
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}
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else
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{
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/* Uncompressed */
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for (run += 1; run > 0; run--)
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{
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if (image->cursor >= image->size)
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{
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g_message ("Corrupt icon: uncompressed run overflows input size.");
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return FALSE;
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}
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if (out >= max)
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{
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g_message ("Corrupt icon: uncompressed run overflows output size.");
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return FALSE;
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}
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dest[out++ * 4 + channel] = image->data[image->cursor++];
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}
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}
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}
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}
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if (mask)
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{
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gchar typestring[5];
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fourcc_get_string (mask->type, typestring);
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for (out = 0; out < max; out++)
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dest[out * 4 + 3] = mask->data[mask->cursor++];
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}
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return TRUE;
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}
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void
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icns_attach_image (PikaImage *image,
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IconType *icontype,
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IcnsResource *icns,
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IcnsResource *mask,
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gboolean isOSX)
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{
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gchar layer_name[5];
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guchar *dest;
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PikaLayer *layer;
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GeglBuffer *buffer;
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guint row;
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guint expected_size;
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gboolean layer_loaded = FALSE;
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strncpy (layer_name, icontype->type, 4);
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layer_name[4] = '\0';
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row = 4 * icontype->width;
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dest = g_malloc (row * icontype->height);
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expected_size =
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(icontype->width * icontype->height * icontype->bits) / 8;
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if (icns == mask)
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expected_size *= 2;
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expected_size += sizeof (IcnsResourceHeader);
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if (isOSX)
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{
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gchar image_type[5];
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PikaImage *temp_image;
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GFile *temp_file = NULL;
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FILE *fp;
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PikaValueArray *return_vals = NULL;
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PikaLayer **layers;
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PikaLayer *new_layer;
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gint n_layers;
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gchar *temp_file_type = NULL;
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gchar *procedure_name = NULL;
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temp_image = pika_image_new (icontype->width, icontype->height,
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pika_image_get_base_type (image));
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strncpy (image_type, (gchar *) icns->data + 8, 4);
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image_type[4] = '\0';
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/* PNG */
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if (! strncmp (image_type, "\x89\x50\x4E\x47", 4))
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{
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temp_file_type = "png";
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procedure_name = "file-png-load";
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}
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/* JPEG 2000 */
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else if (! strncmp (image_type, "\x0CjP", 3))
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{
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temp_file_type = "jp2";
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procedure_name = "file-jp2-load";
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}
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if (temp_file_type && procedure_name)
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{
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temp_file = pika_temp_file (temp_file_type);
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fp = g_fopen (g_file_peek_path (temp_file), "wb");
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if (! fp)
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{
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g_message (_("Error trying to open temporary %s file '%s' "
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"for icns loading: %s"),
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temp_file_type,
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pika_file_get_utf8_name (temp_file),
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g_strerror (errno));
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return;
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}
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fwrite (icns->data + 8, sizeof (guchar), icns->size - 8, fp);
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fclose (fp);
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return_vals =
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pika_pdb_run_procedure (pika_get_pdb (),
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procedure_name,
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PIKA_TYPE_RUN_MODE, PIKA_RUN_NONINTERACTIVE,
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G_TYPE_FILE, temp_file,
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G_TYPE_NONE);
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}
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if (temp_image && return_vals)
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{
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temp_image = g_value_get_object (pika_value_array_index (return_vals, 1));
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layers = pika_image_get_layers (temp_image, &n_layers);
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new_layer = pika_layer_new_from_drawable (PIKA_DRAWABLE (layers[0]), image);
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pika_item_set_name (PIKA_ITEM (new_layer), layer_name);
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pika_image_insert_layer (image, new_layer, NULL, 0);
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layer_loaded = TRUE;
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g_file_delete (temp_file, NULL, NULL);
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g_object_unref (temp_file);
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pika_value_array_unref (return_vals);
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g_free (layers);
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}
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}
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else
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{
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if (icontype->bits != 32 || expected_size == icns->size)
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icns_slurp (dest, icontype, icns, mask);
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else
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icns_decompress (dest, icontype, icns, mask);
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}
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if (! layer_loaded)
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{
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layer = pika_layer_new (image, layer_name, icontype->width, icontype->height,
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PIKA_RGBA_IMAGE, 100,
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pika_image_get_default_new_layer_mode (image));
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buffer = pika_drawable_get_buffer (PIKA_DRAWABLE (layer));
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gegl_buffer_set (buffer,
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GEGL_RECTANGLE (0, 0, icontype->width, icontype->height),
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0, NULL,
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dest, GEGL_AUTO_ROWSTRIDE);
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pika_image_insert_layer (image, layer, NULL, 0);
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g_object_unref (buffer);
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}
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g_free (dest);
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}
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PikaImage *
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icns_load_image (GFile *file,
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gint32 *file_offset,
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GError **error)
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{
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FILE *fp;
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IcnsResource *icns;
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PikaImage *image;
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gegl_init (NULL, NULL);
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pika_progress_init_printf (_("Opening '%s'"),
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pika_file_get_utf8_name (file));
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fp = g_fopen (g_file_peek_path (file), "rb");
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if (! fp)
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{
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g_set_error (error, G_FILE_ERROR, g_file_error_from_errno (errno),
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_("Could not open '%s' for reading: %s"),
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pika_file_get_utf8_name (file), g_strerror (errno));
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return NULL;
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}
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icns = resource_load (fp);
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fclose (fp);
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if (! icns)
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{
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g_message ("Invalid or corrupt icns resource file.");
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return NULL;
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}
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image = icns_load (icns, file);
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g_free (icns);
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pika_progress_update (1.0);
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return image;
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}
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PikaImage *
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icns_load_thumbnail_image (GFile *file,
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gint *width,
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gint *height,
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gint32 file_offset,
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GError **error)
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{
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gint w = 0;
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FILE *fp;
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PikaImage *image = NULL;
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IcnsResource *icns;
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IcnsResource *resources;
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IcnsResource *mask = NULL;
|
|
guint i;
|
|
gint match = -1;
|
|
guint nResources = 0;
|
|
|
|
gegl_init (NULL, NULL);
|
|
|
|
pika_progress_init_printf (_("Opening thumbnail for '%s'"),
|
|
pika_file_get_utf8_name (file));
|
|
|
|
fp = g_fopen (g_file_peek_path (file), "rb");
|
|
|
|
if (! fp)
|
|
{
|
|
g_set_error (error, G_FILE_ERROR, g_file_error_from_errno (errno),
|
|
_("Could not open '%s' for reading: %s"),
|
|
pika_file_get_utf8_name (file), g_strerror (errno));
|
|
return NULL;
|
|
}
|
|
|
|
icns = resource_load (fp);
|
|
fclose (fp);
|
|
|
|
if (! icns)
|
|
{
|
|
g_message ("Invalid or corrupt icns resource file.");
|
|
return NULL;
|
|
}
|
|
|
|
image = pika_image_new (1024, 1024, PIKA_RGB);
|
|
|
|
resources = g_new (IcnsResource, 256);
|
|
while (resource_get_next (icns, &resources[nResources++])) {}
|
|
|
|
for (i = 0; iconTypes[i].type; i++)
|
|
{
|
|
if ((icns = resource_find (resources, iconTypes[i].type, nResources)))
|
|
{
|
|
if (iconTypes[i].width > w)
|
|
{
|
|
w = iconTypes[i].width;
|
|
match = i;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (match > -1)
|
|
{
|
|
icns = resource_find (resources, iconTypes[match].type, nResources);
|
|
|
|
if (! iconTypes[match].isModern)
|
|
mask = resource_find (resources, iconTypes[match].mask, nResources);
|
|
|
|
icns_attach_image (image, &iconTypes[match], icns, mask, iconTypes[match].isModern);
|
|
|
|
pika_image_resize_to_layers (image);
|
|
}
|
|
else
|
|
{
|
|
g_message ("Invalid or corrupt icns resource file.");
|
|
return NULL;
|
|
}
|
|
|
|
g_free (resources);
|
|
|
|
pika_progress_update (1.0);
|
|
|
|
return image;
|
|
}
|
