blob: 19d7d0a88c485379807d58f035bd6c2b07f0ac2a (
plain)
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
|
/*****************************************************************************/
/* CascDecompress.cpp Copyright (c) Ladislav Zezula 2014 */
/*---------------------------------------------------------------------------*/
/* Decompression functions */
/*---------------------------------------------------------------------------*/
/* Date Ver Who Comment */
/* -------- ---- --- ------- */
/* 02.05.14 1.00 Lad The first version of CascDecompress.cpp */
/*****************************************************************************/
#define __CASCLIB_SELF__
#include "CascLib.h"
#include "CascCommon.h"
//-----------------------------------------------------------------------------
// Public functions
DWORD CascDecompress(LPBYTE pbOutBuffer, PDWORD pcbOutBuffer, LPBYTE pbInBuffer, DWORD cbInBuffer)
{
z_stream z; // Stream information for zlib
DWORD dwErrCode = ERROR_FILE_CORRUPT;
uInt cbOutBuffer = *pcbOutBuffer;
int nResult;
// Fill the stream structure for zlib
z.next_in = pbInBuffer;
z.avail_in = cbInBuffer;
z.total_in = cbInBuffer;
z.next_out = pbOutBuffer;
z.avail_out = cbOutBuffer;
z.total_out = 0;
z.zalloc = NULL;
z.zfree = NULL;
// Reset the total number of output bytes
cbOutBuffer = 0;
// Initialize the decompression structure
if((nResult = inflateInit(&z)) == Z_OK)
{
// Call zlib to decompress the data
nResult = inflate(&z, Z_NO_FLUSH);
if(nResult == Z_OK || nResult == Z_STREAM_END)
{
// Give the size of the uncompressed data
cbOutBuffer = z.total_out;
dwErrCode = ERROR_SUCCESS;
}
inflateEnd(&z);
}
// Give the caller the number of bytes needed
pcbOutBuffer[0] = cbOutBuffer;
return dwErrCode;
}
|
