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-rw-r--r--engines/scumm/thumbnail.cpp130
1 files changed, 0 insertions, 130 deletions
diff --git a/engines/scumm/thumbnail.cpp b/engines/scumm/thumbnail.cpp
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--- a/engines/scumm/thumbnail.cpp
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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 file 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.
- *
- * $URL$
- * $Id$
- *
- */
-
-
-#include "common/system.h"
-#include "common/savefile.h"
-#include "graphics/scaler.h"
-#include "scumm/scumm.h"
-
-namespace Scumm {
-
-#define THMB_VERSION 1
-
-struct ThumbnailHeader {
- uint32 type;
- uint32 size;
- byte version;
- uint16 width, height;
- byte bpp;
-};
-
-#define ThumbnailHeaderSize (4+4+1+2+2+1)
-
-inline void colorToRGB(uint16 color, uint8 &r, uint8 &g, uint8 &b) {
- r = (((color >> 11) & 0x1F) << 3);
- g = (((color >> 5) & 0x3F) << 2);
- b = ((color&0x1F) << 3);
-}
-
-Graphics::Surface *ScummEngine::loadThumbnail(Common::SeekableReadStream *file) {
- ThumbnailHeader header;
-
- header.type = file->readUint32BE();
- // We also accept the bad 'BMHT' header here, for the sake of compatibility
- // with some older savegames which were written incorrectly due to a bug in
- // ScummVM which wrote the thumb header type incorrectly on LE systems.
- if (header.type != MKID_BE('THMB') && header.type != MKID_BE('BMHT'))
- return 0;
-
- header.size = file->readUint32BE();
- header.version = file->readByte();
-
- if (header.version > THMB_VERSION) {
- file->skip(header.size - 9);
- warning("Loading a newer thumbnail version");
- return 0;
- }
-
- header.width = file->readUint16BE();
- header.height = file->readUint16BE();
- header.bpp = file->readByte();
-
- // TODO: support other bpp values than 2
- if (header.bpp != 2) {
- file->skip(header.size - 14);
- return 0;
- }
-
- Graphics::Surface *thumb = new Graphics::Surface();
- thumb->create(header.width, header.height, sizeof(OverlayColor));
-
- OverlayColor* pixels = (OverlayColor *)thumb->pixels;
-
- for (int y = 0; y < thumb->h; ++y) {
- for (int x = 0; x < thumb->w; ++x) {
- uint8 r, g, b;
- colorToRGB(file->readUint16BE(), r, g, b);
-
- // converting to current OSystem Color
- *pixels++ = _system->RGBToColor(r, g, b);
- }
- }
-
- return thumb;
-}
-
-void ScummEngine::saveThumbnail(Common::OutSaveFile *file) {
- Graphics::Surface thumb;
-
-#if !defined(__DS__)
- if (!createThumbnailFromScreen(&thumb))
-#endif
- thumb.create(kThumbnailWidth, kThumbnailHeight2, sizeof(uint16));
-
- ThumbnailHeader header;
- header.type = MKID_BE('THMB');
- header.size = ThumbnailHeaderSize + thumb.w*thumb.h*thumb.bytesPerPixel;
- header.version = THMB_VERSION;
- header.width = thumb.w;
- header.height = thumb.h;
- header.bpp = thumb.bytesPerPixel;
-
- file->writeUint32BE(header.type);
- file->writeUint32BE(header.size);
- file->writeByte(header.version);
- file->writeUint16BE(header.width);
- file->writeUint16BE(header.height);
- file->writeByte(header.bpp);
-
- // TODO: for later this shouldn't be casted to uint16...
- uint16* pixels = (uint16 *)thumb.pixels;
- for (uint16 p = 0; p < thumb.w*thumb.h; ++p, ++pixels)
- file->writeUint16BE(*pixels);
-
- thumb.free();
-}
-
-} // end of namespace Scumm