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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program 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 General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "common/scummsys.h"
#include "common/file.h"
#include "common/system.h"
#include "graphics/decoders/tga.h"
#include "zvision/zvision.h"
#include "zvision/lzss_read_stream.h"
namespace ZVision {
void ZVision::renderImageToScreen(const Common::String &fileName, uint32 x, uint32 y) {
Common::File file;
if (!file.open(fileName)) {
error("Could not open file %s", fileName.c_str());
return;
}
// Read the magic number
// Some files are true TGA, while others are TGZ
uint32 fileType;
fileType = file.readUint32BE();
// Check for TGZ files
if (fileType == MKTAG('T', 'G', 'Z', '\0')) {
// TGZ files have a header and then Bitmap data that is compressed with LZSS
uint32 decompressedSize = file.readSint32LE();
uint32 width = file.readSint32LE();
uint32 height = file.readSint32LE();
LzssReadStream stream(&file, false, decompressedSize);
byte *buffer = new byte[stream.currentSize()];
stream.read(buffer, stream.currentSize());
_system->copyRectToScreen(buffer, width * 2, x, y, width, height);
} else {
// Reset the cursor
file.seek(0);
// Decode
Graphics::TGADecoder tga;
if (!tga.loadStream(file))
error("Error while reading TGA image");
file.close();
const Graphics::Surface *tgaSurface = tga.getSurface();
_system->copyRectToScreen(tgaSurface->pixels, tgaSurface->pitch, x, y, tgaSurface->w, tgaSurface->h);
tga.destroy();
}
_needsScreenUpdate = true;
}
} // End of namespace ZVision
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