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-rw-r--r--engines/mohawk/jpeg.cpp87
1 files changed, 0 insertions, 87 deletions
diff --git a/engines/mohawk/jpeg.cpp b/engines/mohawk/jpeg.cpp
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--- a/engines/mohawk/jpeg.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 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.
- *
- * $URL$
- * $Id$
- *
- */
-
-#include "common/system.h"
-#include "graphics/conversion.h" // For YUV2RGB
-
-#include "mohawk/jpeg.h"
-
-namespace Mohawk {
-
-JPEGDecoder::JPEGDecoder(bool freeSurfaceAfterUse) : Graphics::Codec(), _freeSurfaceAfterUse(freeSurfaceAfterUse) {
- _jpeg = new Graphics::JPEG();
- _pixelFormat = g_system->getScreenFormat();
- _surface = NULL;
-}
-
-JPEGDecoder::~JPEGDecoder() {
- delete _jpeg;
-
- if (_surface) {
- _surface->free();
- delete _surface;
- }
-}
-
-Graphics::Surface *JPEGDecoder::decodeImage(Common::SeekableReadStream* stream) {
- _jpeg->read(stream);
- Graphics::Surface *ySurface = _jpeg->getComponent(1);
- Graphics::Surface *uSurface = _jpeg->getComponent(2);
- Graphics::Surface *vSurface = _jpeg->getComponent(3);
-
- Graphics::Surface *destSurface = NULL;
-
- // If we should free the surface after use, use the internal _surface storage
- // (this should be used when using as a Codec, as the Codecs should free their
- // surfaces when deleting the Codec object). Otherwise, create a new Surface
- // as the destination.
- if (_freeSurfaceAfterUse) {
- if (!_surface) {
- _surface = new Graphics::Surface();
- _surface->create(ySurface->w, ySurface->h, _pixelFormat.bytesPerPixel);
- }
- destSurface = _surface;
- } else {
- destSurface = new Graphics::Surface();
- destSurface->create(ySurface->w, ySurface->h, _pixelFormat.bytesPerPixel);
- }
-
- assert(destSurface);
-
- for (uint16 i = 0; i < destSurface->h; i++) {
- for (uint16 j = 0; j < destSurface->w; j++) {
- byte r = 0, g = 0, b = 0;
- Graphics::YUV2RGB(*((byte *)ySurface->getBasePtr(j, i)), *((byte *)uSurface->getBasePtr(j, i)), *((byte *)vSurface->getBasePtr(j, i)), r, g, b);
- if (_pixelFormat.bytesPerPixel == 2)
- *((uint16 *)destSurface->getBasePtr(j, i)) = _pixelFormat.RGBToColor(r, g, b);
- else
- *((uint32 *)destSurface->getBasePtr(j, i)) = _pixelFormat.RGBToColor(r, g, b);
- }
- }
-
- return destSurface;
-}
-
-} // End of namespace Mohawk