1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
/* 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.
*
* $URL$
* $Id$
*
*/
// Based on http://wiki.multimedia.cx/index.php?title=Smacker
// and the FFmpeg Smacker decoder (libavcodec/smacker.c), revision 15884
// http://svn.ffmpeg.org/ffmpeg/trunk/libavcodec/smacker.c?revision=15884&view=markups
#ifndef GRAPHICS_SMK_PLAYER_H
#define GRAPHICS_SMK_PLAYER_H
#include "common/scummsys.h"
#include "common/file.h"
namespace Common {
class File;
}
class OSystem;
namespace Graphics {
class BigHuffmanTree;
/*
* Implementation of a Smacker v2/v4 video decoder
*/
class SMKPlayer {
public:
SMKPlayer();
virtual ~SMKPlayer();
Common::SeekableReadStream *_fileStream;
/**
* Returns the width of the video
* @return the width of the video
*/
uint getWidth() { return _header.width; }
/**
* Returns the height of the video
* @return the height of the video
*/
uint getHeight() { return (_header.flags ? 2 : 1) * _header.height; }
/**
* Returns the current frame number of the video
* @return the current frame number of the video
*/
uint32 getCurFrame() { return _currentSMKFrame; }
/**
* Returns the amount of frames in the video
* @return the amount of frames in the video
*/
uint32 getFrameCount() { return _framesCount; }
/**
* Returns the frame rate of the video
* @return the frame rate of the video
*/
int32 getFrameRate() { return _header.frameRate; }
/**
* Load an SMK encoded video file
* @param filename the filename to load
*/
bool loadFile(const char *filename);
/**
* Close an SMK encoded video file
*/
void closeFile();
protected:
/**
* Set palette, based on current frame
* @param pal the palette data
*/
virtual void setPalette(byte *pal) = 0;
/**
* Copy current frame into the specified position of the destination
* buffer.
* @param dst the buffer
* @param x the x position of the buffer
* @param y the y position of the buffer
* @param pitch the pitch of buffer
*/
void copyFrameToBuffer(byte *dst, uint x, uint y, uint pitch);
/**
* Decode the next frame
*/
bool decodeNextFrame();
byte *getCurSMKImage() { return _image; }
bool paletteDidChange() { return _paletteDidChange; }
byte *palette() { return _palette; }
uint16 _framesCount;
private:
void unpackPalette();
uint32 _currentSMKFrame;
struct {
uint32 signature;
uint32 width;
uint32 height;
uint32 frames;
int32 frameRate;
uint32 flags;
uint32 audioSize[7];
uint32 treesSize;
uint32 mMapSize;
uint32 mClrSize;
uint32 fullSize;
uint32 typeSize;
uint32 audioRate[7];
uint32 dummy;
} _header;
uint32 *_frameSizes;
uint32 *_frameTypes;
BigHuffmanTree *_MMapTree;
BigHuffmanTree *_MClrTree;
BigHuffmanTree *_FullTree;
BigHuffmanTree *_TypeTree;
byte *_frameData;
byte *_image;
bool _paletteDidChange;
byte *_palette;
// Possible runs of blocks
int getBlockRun(int index) { return (index <= 58) ? index + 1 : (2 ^ (59 - index)) * 128; }
};
} // End of namespace Graphics
#endif
|
