mirror of
https://github.com/kichikuou/xsystem35-sdl2.git
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121 lines
3.0 KiB
C
121 lines
3.0 KiB
C
/*
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* cg.c DLL用に CGを surface に展開
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*
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* Copyright (C) 1997-1998 Masaki Chikama (Wren) <chikama@kasumi.ipl.mech.nagoya-u.ac.jp>
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* 1998- <masaki-c@is.aist-nara.ac.jp>
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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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/* $Id: cg.c,v 1.2 2003/04/22 16:29:52 chikama Exp $ */
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include "portab.h"
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#include "system.h"
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#include "surface.h"
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#include "cg.h"
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#include "ags.h"
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#include "pms.h"
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#include "qnt.h"
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#include "gfx.h"
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#include "ngraph.h"
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#include "dri.h"
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#include "ald_manager.h"
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/**
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* バッファのデータがどのCG形式かを最初の数バイトをみてチェック
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*
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* @param data: データ列
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* @return CGの種類(QNT/PMS8/PMS16のいずれか)
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*/
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static CG_TYPE check_cgformat(uint8_t *data) {
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if (qnt_checkfmt(data)) {
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return ALCG_QNT;
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} else if (pms256_checkfmt(data)) {
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return ALCG_PMS8;
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} else if (pms64k_checkfmt(data)) {
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return ALCG_PMS16;
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}
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return ALCG_UNKNOWN;
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}
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/**
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* ファイル等から読み込んだCGデータをsurfaceに展開
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*
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* @param b: データ列
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* @return CG が展開された surface
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* 未知の形式のときは NULL が返る
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*/
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static surface_t *sf_getcg(void *b, size_t size) {
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surface_t *sf;
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cgdata *cg;
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switch(check_cgformat(b)) {
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case ALCG_PMS8:
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// Load as an alpha map
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cg = pms256_extract(b);
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cg->alpha = cg->pic;
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cg->pic = NULL;
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sf = sf_create_alpha(cg->width, cg->height);
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gfx_drawImageAlphaMap(cg, sf, 0, 0);
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break;
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case ALCG_PMS16:
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cg = pms64k_extract(b);
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sf = cg->alpha
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? sf_create_surface(cg->width, cg->height)
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: sf_create_pixel(cg->width, cg->height);
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gfx_drawImage16(cg, sf, 0, 0, 255, false);
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break;
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case ALCG_QNT:
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cg = qnt_extract(b);
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sf = cg->alpha
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? sf_create_surface(cg->width, cg->height)
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: sf_create_pixel(cg->width, cg->height);
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gfx_drawImage24(cg, sf, 0, 0, 255);
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break;
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default:
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WARNING("Unknown Cg Type");
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return NULL;
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}
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cgdata_free(cg);
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return sf;
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}
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/**
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* ALDファイルから指定の番号のCGを読み込んで surfaceに展開
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*
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* @param no: ファイル番号 (0-)
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* @return CGが展開された surface
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*/
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surface_t *sf_loadcg_no(int no) {
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dridata *dfile;
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surface_t *sf;
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if (NULL == (dfile = ald_getdata(DRIFILE_CG, no))) {
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return NULL;
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}
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sf = sf_getcg(dfile->data, dfile->size);
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ald_freedata(dfile);
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return sf;
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}
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