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
|
// InStreamWithCRC.cpp
#include "StdAfx.h"
#include "InStreamWithCRC.h"
STDMETHODIMP CSequentialInStreamWithCRC::Read(void *data, UInt32 size, UInt32 *processedSize)
{
UInt32 realProcessedSize;
HRESULT result = _stream->Read(data, size, &realProcessedSize);
_size += realProcessedSize;
if (size > 0 && realProcessedSize == 0)
_wasFinished = true;
_crc.Update(data, realProcessedSize);
if(processedSize != NULL)
*processedSize = realProcessedSize;
return result;
}
STDMETHODIMP CInStreamWithCRC::Read(void *data, UInt32 size, UInt32 *processedSize)
{
UInt32 realProcessedSize;
HRESULT result = _stream->Read(data, size, &realProcessedSize);
if (size > 0 && realProcessedSize == 0)
_wasFinished = true;
_size += realProcessedSize;
_crc.Update(data, realProcessedSize);
if(processedSize != NULL)
*processedSize = realProcessedSize;
return result;
}
STDMETHODIMP CInStreamWithCRC::Seek(Int64 offset,
UInt32 seekOrigin, UInt64 *newPosition)
{
if (seekOrigin != STREAM_SEEK_SET || offset != 0)
return E_FAIL;
_size = 0;
_crc.Init();
return _stream->Seek(offset, seekOrigin, newPosition);
}
|
