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/***************************************************************************
* Copyright (C) 2005-2019 by the FIFE team *
* http://www.fifengine.net *
* This file is part of FIFE. *
* *
* FIFE is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Lesser General Public *
* License as published by the Free Software Foundation; either *
* version 2.1 of the License, or (at your option) any later version. *
* *
* This library is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this library; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
***************************************************************************/
// Standard C++ library includes
#include <memory>
// 3rd party library includes
#include <SDL.h>
#include <SDL_image.h>
// FIFE includes
// These includes are split up in two parts, separated by one empty line
// First block: files included from the FIFE root src directory
// Second block: files included from the same folder
#include "controller/engine.h"
#include "util/base/exception.h"
#include "util/resource/resource.h"
#include "vfs/raw/rawdata.h"
#include "vfs/vfs.h"
#include "video/renderbackend.h"
#include "video/image.h"
#include "imageloader.h"
namespace FIFE {
void ImageLoader::load(IResource* res) {
VFS* vfs = VFS::instance();
Image* img = dynamic_cast<Image*>(res);
//Have to save the images x and y shift or it gets lost when it's
//loaded again.
int32_t xShiftSave = img->getXShift();
int32_t yShiftSave = img->getYShift();
if(!img->isSharedImage()) {
const std::string& filename = img->getName();
std::unique_ptr<RawData> data(vfs->open(filename));
size_t datalen = data->getDataLength();
std::unique_ptr<uint8_t[]> darray(new uint8_t[datalen]);
data->readInto(darray.get(), datalen);
SDL_RWops* rwops = SDL_RWFromConstMem(darray.get(), static_cast<int>(datalen));
SDL_Surface* surface = IMG_Load_RW(rwops, false);
if (!surface) {
throw SDLException(std::string("Fatal Error when loading image into a SDL_Surface: ") + SDL_GetError());
}
RenderBackend* rb = RenderBackend::instance();
// in case of SDL we don't need to convert the surface
if (rb->getName() == "SDL") {
img->setSurface(surface);
// in case of OpenGL we need a 32bit surface
} else {
SDL_PixelFormat dst_format = rb->getPixelFormat();
SDL_PixelFormat src_format = *surface->format;
uint8_t dstbits = dst_format.BitsPerPixel;
uint8_t srcbits = src_format.BitsPerPixel;
if (srcbits != 32 || dst_format.Rmask != src_format.Rmask || dst_format.Gmask != src_format.Gmask ||
dst_format.Bmask != src_format.Bmask || dst_format.Amask != src_format.Amask) {
dst_format.BitsPerPixel = 32;
SDL_Surface* conv = SDL_ConvertSurface(surface, &dst_format, 0);
dst_format.BitsPerPixel = dstbits;
if (!conv) {
throw SDLException(std::string("Fatal Error when converting surface to the screen format: ") + SDL_GetError());
}
img->setSurface(conv);
SDL_FreeSurface(surface);
} else {
img->setSurface(surface);
}
}
SDL_FreeRW(rwops);
}
//restore saved x and y shifts
img->setXShift(xShiftSave);
img->setYShift(yShiftSave);
}
} //FIFE
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