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Diffstat (limited to 'engines/pegasus/surface.cpp')
-rwxr-xr-x | engines/pegasus/surface.cpp | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/engines/pegasus/surface.cpp b/engines/pegasus/surface.cpp new file mode 100755 index 0000000000..32a8aa0df6 --- /dev/null +++ b/engines/pegasus/surface.cpp @@ -0,0 +1,221 @@ +/* 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. + * + * Additional copyright for this file: + * Copyright (C) 1995-1997 Presto Studios, Inc. + * + * 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/file.h" +#include "common/macresman.h" +#include "common/stream.h" +#include "common/system.h" +#include "graphics/pict.h" +#include "graphics/surface.h" +#include "video/video_decoder.h" + +#include "pegasus/pegasus.h" +#include "pegasus/surface.h" + +namespace Pegasus { + +Surface::Surface() { + _ownsSurface = false; + _surface = 0; +} + +Surface::~Surface() { + deallocateSurface(); +} + +void Surface::deallocateSurface() { + if (_surface) { + if (_ownsSurface) { + _surface->free(); + delete _surface; + } + + _surface = 0; + _bounds = Common::Rect(); + _ownsSurface = false; + } +} + +void Surface::shareSurface(Surface *surface) { + deallocateSurface(); + + if (surface) { + _ownsSurface = false; + _surface = surface->getSurface(); + surface->getSurfaceBounds(_bounds); + } +} + +void Surface::allocateSurface(const Common::Rect &bounds) { + deallocateSurface(); + + if (bounds.isEmpty()) + return; + + _bounds = bounds; + _surface = new Graphics::Surface(); + _surface->create(bounds.width(), bounds.height(), g_system->getScreenFormat()); + _ownsSurface = true; +} + +void Surface::getImageFromPICTFile(const Common::String &fileName) { + Common::File pict; + if (!pict.open(fileName)) + error("Could not open picture '%s'", fileName.c_str()); + + getImageFromPICTStream(&pict); +} + +void Surface::getImageFromPICTResource(Common::MacResManager *resFork, uint16 id) { + Common::SeekableReadStream *res = resFork->getResource(MKTAG('P', 'I', 'C', 'T'), id); + if (!res) + error("Could not open PICT resource %d from '%s'", id, resFork->getBaseFileName().c_str()); + + getImageFromPICTStream(res); + delete res; +} + +void Surface::getImageFromPICTStream(Common::SeekableReadStream *stream) { + Graphics::PictDecoder pict(g_system->getScreenFormat()); + byte pal[256 * 3]; + + Graphics::Surface *surface = pict.decodeImage(stream, pal); + + // Create the surface if not present + if (!_surface) + _surface = new Graphics::Surface(); + + // Update + if (surface->format.bytesPerPixel == 1) { + // Convert to true color + _surface->create(surface->w, surface->h, g_system->getScreenFormat()); + + for (int y = 0; y < surface->h; y++) { + for (int x = 0; x < surface->w; x++) { + byte index = *((byte *)surface->getBasePtr(x, y)); + uint32 color = _surface->format.RGBToColor(pal[index * 3], pal[index * 3 + 1], pal[index * 3 + 2]); + if (_surface->format.bytesPerPixel == 2) + *((uint16 *)_surface->getBasePtr(x, y)) = color; + else + *((uint32 *)_surface->getBasePtr(x, y)) = color; + } + } + } else { + // Just a copy + _surface->copyFrom(*surface); + } + + _ownsSurface = true; + _bounds = Common::Rect(0, 0, _surface->w, _surface->h); +} + +void Surface::copyToCurrentPort() const { + copyToCurrentPort(_bounds); +} + +void Surface::copyToCurrentPortTransparent() const { + copyToCurrentPortTransparent(_bounds); +} + +void Surface::copyToCurrentPort(const Common::Rect &rect) const { + copyToCurrentPort(rect, rect); +} + +void Surface::copyToCurrentPortTransparent(const Common::Rect &rect) const { + copyToCurrentPortTransparent(rect, rect); +} + +void Surface::copyToCurrentPort(const Common::Rect &srcRect, const Common::Rect &dstRect) const { + Graphics::Surface *screen = ((PegasusEngine *)g_engine)->_gfx->getWorkArea(); + byte *src = (byte *)_surface->getBasePtr(srcRect.left, srcRect.top); + byte *dst = (byte *)screen->getBasePtr(dstRect.left, dstRect.top); + + int lineSize = srcRect.width() * _surface->format.bytesPerPixel; + + for (int y = 0; y < srcRect.height(); y++) { + memcpy(dst, src, lineSize); + src += _surface->pitch - lineSize; + dst += screen->pitch - lineSize; + } +} + +void Surface::copyToCurrentPortTransparent(const Common::Rect &srcRect, const Common::Rect &dstRect) const { + // HACK: Seems we're truncating some color data somewhere... + uint32 transColor1 = g_system->getScreenFormat().RGBToColor(0xff, 0xff, 0xff); + uint32 transColor2 = g_system->getScreenFormat().RGBToColor(0xf8, 0xf8, 0xf8); + + Graphics::Surface *screen = ((PegasusEngine *)g_engine)->_gfx->getWorkArea(); + byte *src = (byte *)_surface->getBasePtr(srcRect.left, srcRect.top); + byte *dst = (byte *)screen->getBasePtr(dstRect.left, dstRect.top); + + int lineSize = srcRect.width() * _surface->format.bytesPerPixel; + + for (int y = 0; y < srcRect.height(); y++) { + for (int x = 0; x < srcRect.width(); x++) { + if (g_system->getScreenFormat().bytesPerPixel == 2) { + uint16 color = READ_UINT16(src); + if (color != transColor1 && color != transColor2) + memcpy(dst, src, 2); + } else if (g_system->getScreenFormat().bytesPerPixel == 4) { + uint32 color = READ_UINT32(src); + if (color != transColor1 && color != transColor2) + memcpy(dst, src, 4); + } + + src += g_system->getScreenFormat().bytesPerPixel; + dst += g_system->getScreenFormat().bytesPerPixel; + } + + src += _surface->pitch - lineSize; + dst += screen->pitch - lineSize; + } +} + +PixelImage::PixelImage() { + _transparent = false; +} + +void PixelImage::drawImage(const Common::Rect &sourceBounds, const Common::Rect &destBounds) { + if (!isSurfaceValid()) + return; + + // Draw from sourceBounds to destBounds based on _transparent + if (_transparent) + copyToCurrentPortTransparent(sourceBounds, destBounds); + else + copyToCurrentPort(sourceBounds, destBounds); +} + +void Frame::initFromPICTFile(const Common::String &fileName, bool transparent) { + getImageFromPICTFile(fileName); + _transparent = transparent; +} + +void Frame::initFromPICTResource(Common::MacResManager *resFork, uint16 id, bool transparent) { + getImageFromPICTResource(resFork, id); + _transparent = transparent; +} + +} // End of namespace Pegasus |