300 lines
6.8 KiB
C
300 lines
6.8 KiB
C
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/*
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* skinedit - a skin editor for the TiEmu emulator
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* Copyright (C) 2002 Julien BLACHE <jb@tilp.info>
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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 2 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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contra-sh :
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This file is a (quasi) perfect copy of the tiemu skinops.c file ...
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Thank's to rom's and JB for this wonderful work.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdint.h>
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#include <math.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include "skinops.h"
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#include <gtk/gtk.h>
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#include <glib/gstdio.h>
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#define SKIN_ERROR g_quark_from_static_string("skin-error")
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enum {
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SKIN_ERROR_INVALID
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};
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/*
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Determine skin type
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*/
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int skin_get_type(SKIN_INFOS *si, const char *filename)
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{
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FILE *fp;
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char str[17];
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fp = g_fopen(filename, "rb");
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if (fp == NULL) {
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fprintf(stderr, "Unable to open this file: <%s>\n", filename);
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return -1;
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}
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memset(str, 0, sizeof(str));
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fread(str, 16, 1, fp);
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if(!strncmp(str, "TiEmu v2.00", 16))
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si->type = SKIN_TYPE_TIEMU;
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else if(!strncmp(str, "TilEm v2.00 ", 16))
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si->type = SKIN_TYPE_TIEMU;
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else if(!strncmp(str, "VTIv2.1 ", 8))
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si->type = SKIN_TYPE_OLD_VTI;
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else if(!strncmp(str, "VTIv2.5 ", 8))
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si->type = SKIN_TYPE_VTI;
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else {
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fprintf(stderr, "Bad skin format\n");
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return -1;
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}
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return 0;
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}
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/*
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Read TilEm skin informations (header)
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*/
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int skin_read_header(SKIN_INFOS *si, FILE *fp)
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{
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int i;
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uint32_t endian;
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uint32_t jpeg_offset;
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uint32_t length;
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char str[17];
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/* signature & offsets */
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fread(str, 16, 1, fp);
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if ((strncmp(str, "TilEm v2.00", 16))
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&& (strncmp(str, "TiEmu v2.00", 16))) {
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return -1;
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}
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fread(&endian, 4, 1, fp);
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fread(&jpeg_offset, 4, 1, fp);
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if (endian != ENDIANNESS_FLAG)
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jpeg_offset = GUINT32_SWAP_LE_BE(jpeg_offset);
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/* Skin name */
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fread(&length, 4, 1, fp);
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if (endian != ENDIANNESS_FLAG)
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length = GUINT32_SWAP_LE_BE(length);
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if (length > 0) {
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si->name = (char *)malloc(length + 1);
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if (si->name == NULL)
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return -1;
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memset(si->name, 0, length + 1);
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fread(si->name, length, 1, fp);
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}
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/* Skin author */
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fread(&length, 4, 1, fp);
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if (endian != ENDIANNESS_FLAG)
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length = GUINT32_SWAP_LE_BE(length);
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if (length > 0) {
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si->author = (char *)malloc(length + 1);
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if (si->author == NULL)
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return -1;
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memset(si->author, 0, length + 1);
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fread(si->author, length, 1, fp);
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}
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/* LCD colors */
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fread(&si->colortype, 4, 1, fp);
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fread(&si->lcd_white, 4, 1, fp);
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fread(&si->lcd_black, 4, 1, fp);
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/* Calc type */
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fread(si->calc, 8, 1, fp);
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/* LCD position */
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fread(&si->lcd_pos.left, 4, 1, fp);
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fread(&si->lcd_pos.top, 4, 1, fp);
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fread(&si->lcd_pos.right, 4, 1, fp);
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fread(&si->lcd_pos.bottom, 4, 1, fp);
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/* Number of RECT struct to read */
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fread(&length, 4, 1, fp);
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if (endian != ENDIANNESS_FLAG)
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length = GUINT32_SWAP_LE_BE(length);
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if (length > SKIN_KEYS)
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return -1;
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for (i = 0; i < (int)length; i++) {
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fread(&si->keys_pos[i].left, 4, 1, fp);
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fread(&si->keys_pos[i].top, 4, 1, fp);
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fread(&si->keys_pos[i].right, 4, 1, fp);
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fread(&si->keys_pos[i].bottom, 4, 1, fp);
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}
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if (endian != ENDIANNESS_FLAG) {
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si->colortype = GUINT32_SWAP_LE_BE(si->colortype);
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si->lcd_white = GUINT32_SWAP_LE_BE(si->lcd_white);
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si->lcd_black = GUINT32_SWAP_LE_BE(si->lcd_black);
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si->lcd_pos.top = GUINT32_SWAP_LE_BE(si->lcd_pos.top);
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si->lcd_pos.left = GUINT32_SWAP_LE_BE(si->lcd_pos.left);
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si->lcd_pos.bottom = GUINT32_SWAP_LE_BE(si->lcd_pos.bottom);
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si->lcd_pos.right = GUINT32_SWAP_LE_BE(si->lcd_pos.right);
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for (i = 0; i < (int)length; i++) {
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si->keys_pos[i].top = GUINT32_SWAP_LE_BE(si->keys_pos[i].top);
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si->keys_pos[i].bottom = GUINT32_SWAP_LE_BE(si->keys_pos[i].bottom);
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si->keys_pos[i].left = GUINT32_SWAP_LE_BE(si->keys_pos[i].left);
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si->keys_pos[i].right = GUINT32_SWAP_LE_BE(si->keys_pos[i].right);
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}
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}
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si->jpeg_offset = ftell(fp);
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return 0;
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}
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/*
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Read skin image (pure jpeg data)
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*/
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int skin_read_image(SKIN_INFOS *si, FILE *fp, GError **err)
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{
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GdkPixbufLoader *loader;
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gboolean result;
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guchar *buf;
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gsize count;
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struct stat st;
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// Extract image from skin
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fseek(fp, si->jpeg_offset, SEEK_SET);
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fstat(fileno(fp), &st);
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count = st.st_size - si->jpeg_offset;
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buf = g_malloc(count * sizeof(guchar));
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count = fread(buf, sizeof(guchar), count, fp);
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// Feed the pixbuf loader with our jpeg data
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loader = gdk_pixbuf_loader_new();
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result = gdk_pixbuf_loader_write(loader, buf, count, err);
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g_free(buf);
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if(result == FALSE) {
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g_object_unref(loader);
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return -1;
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}
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result = gdk_pixbuf_loader_close(loader, err);
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if(result == FALSE) {
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g_object_unref(loader);
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return -1;
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}
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// and get the pixbuf
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si->raw = gdk_pixbuf_loader_get_pixbuf(loader);
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if(si->raw == NULL) {
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g_set_error(err, SKIN_ERROR, SKIN_ERROR_INVALID,
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"Unable to load background image");
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g_object_unref(loader);
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return -1;
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}
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si->sx = si->sy = 1.0;
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si->image = g_object_ref(si->raw);
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g_object_ref(si->raw);
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// Get new skin size
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si->width = gdk_pixbuf_get_width(si->image);
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si->height = gdk_pixbuf_get_height(si->image);
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g_object_unref(loader);
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return 0;
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}
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/* Load a skin (TilEm v2.00 only) */
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int skin_load(SKIN_INFOS *si, const char *filename, GError **err)
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{
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FILE *fp;
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int ret = 0, errnum;
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char *dname;
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g_return_val_if_fail(err == NULL || *err == NULL, -1);
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fp = g_fopen(filename, "rb");
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if (fp == NULL) {
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errnum = errno;
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dname = g_filename_display_basename(filename);
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g_set_error(err, G_FILE_ERROR, g_file_error_from_errno(errnum),
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"Unable to open %s for reading: %s",
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dname, g_strerror(errnum));
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g_free(dname);
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return -1;
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}
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ret = skin_read_header(si, fp);
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if (ret) {
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fclose(fp);
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dname = g_filename_display_basename(filename);
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g_set_error(err, SKIN_ERROR, SKIN_ERROR_INVALID,
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"The file %s is not a valid skin.", dname);
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g_free(dname);
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return -1;
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}
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ret = skin_read_image(si, fp, err);
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fclose(fp);
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return ret;
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}
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/* Unload skin by freeing allocated memory */
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int skin_unload(SKIN_INFOS *si)
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{
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if (si->image != NULL) {
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g_object_unref(si->image);
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si->image = NULL;
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}
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if (si->raw) {
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g_object_unref(si->raw);
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si->raw = NULL;
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}
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free(si->name);
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free(si->author);
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memset(si, 0, sizeof(SKIN_INFOS));
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return 0;
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}
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