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https://github.com/libretro/scummvm.git
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82 lines
2.4 KiB
C++
82 lines
2.4 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include "common/debug.h"
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#include "common/stream.h"
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#include "image/png.h"
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#include "graphics/surface.h"
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#include "sludge/allfiles.h"
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#include "sludge/hsi.h"
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#include "sludge/imgloader.h"
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#include "sludge/sludge.h"
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namespace Sludge {
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bool ImgLoader::loadImage(Common::SeekableReadStream *stream, Graphics::Surface *dest, int reserve) {
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debug(kSludgeDebugDataLoad, "Loading image at position: %i", stream->pos());
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int32 start_ptr = stream->pos();
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if (!loadPNGImage(stream, dest)) {
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stream->seek(start_ptr);
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if (!loadHSIImage(stream, dest, reserve)) {
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return false;
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}
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}
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return true;
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}
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bool ImgLoader::loadPNGImage(Common::SeekableReadStream *stream, Graphics::Surface *dest, bool checkSig) {
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::Image::PNGDecoder png;
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// set skip signature
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if (!checkSig) {
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png.setSkipSignature(true);
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}
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if (!png.loadStream(*stream))
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return false;
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// set value back
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if (!checkSig) {
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png.setSkipSignature(false);
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}
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const Graphics::Surface *sourceSurface = png.getSurface();
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Graphics::Surface *pngSurface = sourceSurface->convertTo(*g_sludge->getScreenPixelFormat(), png.getPalette());
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dest->copyFrom(*pngSurface);
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pngSurface->free();
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delete pngSurface;
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return true;
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}
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bool ImgLoader::loadHSIImage(Common::SeekableReadStream *stream, Graphics::Surface *dest, int reserve) {
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HSIDecoder hsiDecoder;
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hsiDecoder.setReserve(reserve);
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if (!hsiDecoder.loadStream(*stream)) {
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return false;
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}
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dest->copyFrom(*(hsiDecoder.getSurface()));
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return true;
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}
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} // End of namespace Sludge
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