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https://github.com/libretro/scummvm.git
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120 lines
2.9 KiB
C++
120 lines
2.9 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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* 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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* 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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* $URL$
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* $Id$
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*
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*/
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#ifdef ENABLE_SCI32
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#include "sci/video/vmd_decoder.h"
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#include "common/endian.h"
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#include "common/util.h"
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#include "common/stream.h"
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#include "common/system.h"
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#include "graphics/dither.h"
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#include "sound/mixer.h"
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#include "sound/audiostream.h"
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namespace Sci {
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VMDDecoder::VMDDecoder(Audio::Mixer *mixer) : _mixer(mixer) {
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_vmdDecoder = new Graphics::Vmd(new Graphics::PaletteLUT(5, Graphics::PaletteLUT::kPaletteYUV));
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_surface = 0;
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_dirtyPalette = false;
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_fileStream = 0;
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}
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VMDDecoder::~VMDDecoder() {
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close();
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}
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bool VMDDecoder::load(Common::SeekableReadStream &stream) {
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close();
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if (!_vmdDecoder->load(stream))
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return false;
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_fileStream = &stream;
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if (_vmdDecoder->getFeatures() & Graphics::CoktelVideo::kFeaturesPalette)
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loadPaletteFromVMD();
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if (_vmdDecoder->getFeatures() & Graphics::CoktelVideo::kFeaturesSound)
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_vmdDecoder->enableSound(*_mixer);
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if (_vmdDecoder->hasExtraData())
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warning("This VMD video has extra embedded data, which is currently not handled");
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_surface = new Graphics::Surface();
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_surface->create(_vmdDecoder->getWidth(), _vmdDecoder->getHeight(), 1);
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_vmdDecoder->setVideoMemory((byte *)_surface->pixels, _surface->w, _surface->h);
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return true;
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}
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void VMDDecoder::close() {
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if (!_fileStream)
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return;
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_vmdDecoder->unload();
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delete _fileStream;
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_fileStream = 0;
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_surface->free();
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delete _surface;
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_surface = 0;
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reset();
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}
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Graphics::Surface *VMDDecoder::decodeNextFrame() {
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Graphics::CoktelVideo::State state = _vmdDecoder->nextFrame();
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if (state.flags & Graphics::CoktelVideo::kStatePalette)
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loadPaletteFromVMD();
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if (_curFrame == -1)
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_startTime = g_system->getMillis();
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_curFrame++;
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return _surface;
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}
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void VMDDecoder::loadPaletteFromVMD() {
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const byte *pal = _vmdDecoder->getPalette();
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for (int i = 0; i < 256; i++) {
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_palette[i * 3 + 0] = pal[i * 3 + 0] << 2;
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_palette[i * 3 + 1] = pal[i * 3 + 1] << 2;
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_palette[i * 3 + 2] = pal[i * 3 + 2] << 2;
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}
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_dirtyPalette = true;
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}
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} // End of namespace Graphics
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#endif
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