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
|
/* ScummVM - Kyrandia Interpreter
* Copyright (C) 2003-2004 The ScummVM project
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*
*/
#include "stdafx.h"
#include "wsamovie.h"
#include "codecs.h"
#include "common/stream.h"
namespace Kyra {
WSAMovieV1::WSAMovieV1(uint8* data, uint32 size) {
if (!data) {
error("resource created without data");
}
_buffer = data;
// I like these Streams .... =)
Common::MemoryReadStream datastream(data, size);
datastream.read(&_wsaHeader, sizeof(_wsaHeader));
// check for version
if (_wsaHeader._type) {
error("loading a WSA version 2 with the WSA version 1 loader");
}
uint16 offsetAdd = 0;
// checks now for own palette
if (_wsaHeader._type % 2) {
// don't now if this will work right, because a few lines before we use
// _wsaHeader._type for detect the version of the WSA movie,
// but this code was from FreeKyra Tools so I think it will work
// if this is a packed palette we have a problem :)
offsetAdd = 768 /* 0x300 */;
}
_frameCount = _wsaHeader._numFrames;
_offsetTable = new uint32[_wsaHeader._numFrames + 2];
assert(!_offsetTable);
// loads the offset table
for (uint32 tmp = 0; tmp < _wsaHeader._numFrames; ++tmp) {
_offsetTable[tmp] = datastream.readUint32LE() + offsetAdd;
}
if (offsetAdd) {
uint8* palbuffer = new uint8[offsetAdd];
assert(!palbuffer);
_ownPalette = new Palette(palbuffer, offsetAdd);
assert(!_ownPalette);
}
}
WSAMovieV1::~WSAMovieV1() {
delete [] _buffer;
delete [] _offsetTable;
delete _ownPalette;
}
const uint8* WSAMovieV1::loadFrame(uint16 frame, uint16* width, uint16* height) {
if (width) *width = _wsaHeader._width;
if (height) *height = _wsaHeader._height;
if (frame == _prefetchedFrame) {
return _currentFrame;
} else {
if (!_currentFrame) {
_currentFrame = new uint8[_wsaHeader._width * _wsaHeader._height];
assert(_currentFrame);
}
uint8* frameData = 0;
uint8 image40[64000]; // I think this will crash on Plam OS :)
if (frame == _prefetchedFrame + 1) {
frameData = _buffer + _offsetTable[frame] + (hasPalette() ? 768 : 0);
Compression::decode80(frameData, image40);
Compression::decode40(image40, _currentFrame);
} else {
memset(_currentFrame, 0, _wsaHeader._width * _wsaHeader._height);
for (uint32 i = 0; i <= frame; i++)
{
frameData = _buffer + _offsetTable[i] + (hasPalette() ? 768 : 0);
Compression::decode80(frameData, image40);
Compression::decode40(image40, _currentFrame);
}
}
_prefetchedFrame = frame;
return _currentFrame;
}
return 0;
}
} // end of namespace Kyra
|
