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// XzDecoder.cpp
#include "StdAfx.h"
#include "../../../C/Alloc.h"
#include "../Common/CWrappers.h"
#include "XzDecoder.h"
namespace NCompress {
namespace NXz {
#define RET_IF_WRAP_ERROR_CONFIRMED(wrapRes, sRes, sResErrorCode) \
if (wrapRes != S_OK && sRes == sResErrorCode) return wrapRes;
#define RET_IF_WRAP_ERROR(wrapRes, sRes, sResErrorCode) \
if (wrapRes != S_OK /* && (sRes == SZ_OK || sRes == sResErrorCode) */) return wrapRes;
static HRESULT SResToHRESULT_Code(SRes res) throw()
{
if (res < 0)
return res;
switch (res)
{
case SZ_OK: return S_OK;
case SZ_ERROR_MEM: return E_OUTOFMEMORY;
case SZ_ERROR_UNSUPPORTED: return E_NOTIMPL;
default: break;
}
return S_FALSE;
}
HRESULT CDecoder::Decode(ISequentialInStream *seqInStream, ISequentialOutStream *outStream,
const UInt64 *outSizeLimit, bool finishStream, ICompressProgressInfo *progress)
{
MainDecodeSRes = SZ_OK;
MainDecodeSRes_wasUsed = false;
XzStatInfo_Clear(&Stat);
if (!xz)
{
xz = XzDecMt_Create(&g_Alloc, &g_MidAlloc);
if (!xz)
return E_OUTOFMEMORY;
}
CXzDecMtProps props;
XzDecMtProps_Init(&props);
int isMT = False;
#ifndef Z7_ST
{
props.numThreads = 1;
const UInt32 numThreads = _numThreads;
if (_tryMt && numThreads > 1)
{
size_t memUsage = (size_t)_memUsage;
if (memUsage != _memUsage)
memUsage = (size_t)0 - 1;
props.memUseMax = memUsage;
isMT = (numThreads > 1);
}
props.numThreads = numThreads;
}
#endif
CSeqInStreamWrap inWrap;
CSeqOutStreamWrap outWrap;
CCompressProgressWrap progressWrap;
inWrap.Init(seqInStream);
outWrap.Init(outStream);
progressWrap.Init(progress);
SRes res = XzDecMt_Decode(xz,
&props,
outSizeLimit, finishStream,
&outWrap.vt,
&inWrap.vt,
&Stat,
&isMT,
progress ? &progressWrap.vt : NULL);
MainDecodeSRes = res;
#ifndef Z7_ST
// _tryMt = isMT;
#endif
RET_IF_WRAP_ERROR(outWrap.Res, res, SZ_ERROR_WRITE)
RET_IF_WRAP_ERROR(progressWrap.Res, res, SZ_ERROR_PROGRESS)
RET_IF_WRAP_ERROR_CONFIRMED(inWrap.Res, res, SZ_ERROR_READ)
// return E_OUTOFMEMORY; // for debug check
MainDecodeSRes_wasUsed = true;
if (res == SZ_OK && finishStream)
{
/*
if (inSize && *inSize != Stat.PhySize)
res = SZ_ERROR_DATA;
*/
if (outSizeLimit && *outSizeLimit != outWrap.Processed)
res = SZ_ERROR_DATA;
}
return SResToHRESULT_Code(res);
}
Z7_COM7F_IMF(CComDecoder::Code(ISequentialInStream *inStream, ISequentialOutStream *outStream,
const UInt64 * /* inSize */, const UInt64 *outSize, ICompressProgressInfo *progress))
{
return Decode(inStream, outStream, outSize, _finishStream, progress);
}
Z7_COM7F_IMF(CComDecoder::SetFinishMode(UInt32 finishMode))
{
_finishStream = (finishMode != 0);
return S_OK;
}
Z7_COM7F_IMF(CComDecoder::GetInStreamProcessedSize(UInt64 *value))
{
*value = Stat.InSize;
return S_OK;
}
#ifndef Z7_ST
Z7_COM7F_IMF(CComDecoder::SetNumberOfThreads(UInt32 numThreads))
{
_numThreads = numThreads;
return S_OK;
}
Z7_COM7F_IMF(CComDecoder::SetMemLimit(UInt64 memUsage))
{
_memUsage = memUsage;
return S_OK;
}
#endif
}}
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