CopyCoder.cpp
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
// Compress/CopyCoder.cpp
#include "StdAfx.h"
extern "C"
{
#include "../../../../C/Alloc.h"
}
#include "CopyCoder.h"
#include "../../Common/StreamUtils.h"
namespace NCompress {
static const UInt32 kBufferSize = 1 << 17;
CCopyCoder::~CCopyCoder()
{
::MidFree(_buffer);
}
STDMETHODIMP CCopyCoder::Code(ISequentialInStream *inStream,
ISequentialOutStream *outStream,
const UInt64 * /* inSize */, const UInt64 *outSize,
ICompressProgressInfo *progress)
{
if (_buffer == 0)
{
_buffer = (Byte *)::MidAlloc(kBufferSize);
if (_buffer == 0)
return E_OUTOFMEMORY;
}
TotalSize = 0;
for (;;)
{
UInt32 realProcessedSize;
UInt32 size = kBufferSize;
if (outSize != 0)
if (size > *outSize - TotalSize)
size = (UInt32)(*outSize - TotalSize);
RINOK(inStream->Read(_buffer, size, &realProcessedSize));
if (realProcessedSize == 0)
break;
RINOK(WriteStream(outStream, _buffer, realProcessedSize, NULL));
TotalSize += realProcessedSize;
if (progress != NULL)
{
RINOK(progress->SetRatioInfo(&TotalSize, &TotalSize));
}
}
return S_OK;
}
STDMETHODIMP CCopyCoder::GetInStreamProcessedSize(UInt64 *value)
{
*value = TotalSize;
return S_OK;
}
}