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Diffstat (limited to 'engines/zvision/rlf_animation.h')
-rw-r--r-- | engines/zvision/rlf_animation.h | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/engines/zvision/rlf_animation.h b/engines/zvision/rlf_animation.h new file mode 100644 index 0000000000..6f93934f1f --- /dev/null +++ b/engines/zvision/rlf_animation.h @@ -0,0 +1,98 @@ +/* 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. + * + */ + +#ifndef ZVISION_RLF_ANIMATION_H +#define ZVISION_RLF_ANIMATION_H + +#include "common/types.h" + +#include "common/file.h" +#include "graphics/surface.h" + + +namespace Common { +class String; +} + +namespace ZVision { + +class RlfAnimation { +public: + RlfAnimation(const Common::String &fileName, bool stream = true); + ~RlfAnimation(); + +private: + enum EncodingType { + Masked, + Simple + }; + + struct Frame { + EncodingType type; + int8 *encodedData; + uint32 encodedSize; + }; + + const static Graphics::PixelFormat _pixelFormat555; + const static Graphics::PixelFormat _pixelFormat565; + +private: + Common::File _file; + bool _stream; + uint _lastFrameRead; + + uint _frameCount; + uint _width; + uint _height; + uint32 _frameTime; // In milliseconds + Frame *_frames; + Common::List<uint> _completeFrames; + + int _currentFrame; + uint16 *_currentFrameBuffer; + uint32 _frameBufferByteSize; + +public: + uint frameCount() { return _frameCount; } + uint width() { return _width; } + uint height() { return _height; } + uint32 frameTime() { return _frameTime; } + + const uint16 *getFrameData(uint frameNumber); + const uint16 *getNextFrame(); + + bool endOfAnimation() { return _currentFrame == (int)_frameCount - 1; } + +private: + bool readHeader(); + Frame readNextFrame(); + + void applyFrameToCurrent(uint frameNumber); + void applyFrameToCurrent(const RlfAnimation::Frame &frame); + + void decodeMaskedRunLengthEncoding(int8 *source, int8 *dest, uint32 sourceSize, uint32 destSize) const; + void decodeSimpleRunLengthEncoding(int8 *source, int8 *dest, uint32 sourceSize, uint32 destSize) const; +}; + +} // End of namespace ZVision + +#endif |