1 /* ScummVM - Graphic Adventure Engine 2 * 3 * ScummVM is the legal property of its developers, whose names 4 * are too numerous to list here. Please refer to the COPYRIGHT 5 * file distributed with this source distribution. 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 2 10 * of the License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 20 * 21 */ 22 23 #ifndef MUTATIONOFJB_ANIMATIONDECODER_H 24 #define MUTATIONOFJB_ANIMATIONDECODER_H 25 26 #include "common/rect.h" 27 #include "common/scummsys.h" 28 #include "common/str.h" 29 30 #include "graphics/surface.h" 31 #include "mutationofjb/encryptedfile.h" 32 33 namespace Common { 34 class SeekableReadStream; 35 } 36 37 namespace MutationOfJB { 38 39 enum { 40 PALETTE_COLORS = 256, 41 PALETTE_SIZE = PALETTE_COLORS * 3, 42 IMAGE_WIDTH = 320, 43 IMAGE_HEIGHT = 200 44 }; 45 46 class AnimationDecoderCallback { 47 public: 48 virtual void onFrame(int frameNo, Graphics::Surface &surface) = 0; 49 virtual void onPaletteUpdated(byte palette[PALETTE_SIZE]) = 0; ~AnimationDecoderCallback()50 virtual ~AnimationDecoderCallback() {} 51 }; 52 53 class AnimationDecoder { 54 public: 55 AnimationDecoder(const Common::String &fileName); 56 AnimationDecoder(const Common::String &fileName, const Graphics::Surface &outSurface); 57 ~AnimationDecoder(); 58 bool decode(AnimationDecoderCallback *callback); 59 60 /** 61 * Enables partial decoding mode. 62 * 63 * @param fromFrame Frame to start decoding on (inclusive). 64 * @param toFrame Frame to end decoding on (inclusive). 65 * @param area Output surface will be confined to this area. 66 * @param threshold Source pixels with color index above this threshold will not be replaced. 67 */ 68 void setPartialMode(int fromFrame, int toFrame, const Common::Rect area = Common::Rect(), uint8 threshold = 0xFF); 69 70 private: 71 void loadPalette(Common::SeekableReadStream &stream); 72 void loadFullFrame(EncryptedFile &file, uint32 size); 73 void loadDiffFrame(EncryptedFile &file, uint32 size); 74 75 Common::String _fileName; 76 Graphics::Surface _surface; 77 bool _owningSurface; 78 byte _palette[PALETTE_SIZE]; 79 int _fromFrame; 80 int _toFrame; 81 Common::Rect _area; 82 uint8 _threshold; 83 }; 84 85 } 86 87 #endif 88