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// XzEncoder.cpp
#include "StdAfx.h"
#include "../../../C/Alloc.h"
#include "../../Common/MyString.h"
#include "../../Common/StringToInt.h"
#include "../Common/CWrappers.h"
#include "../Common/StreamUtils.h"
#include "XzEncoder.h"
namespace NCompress {
namespace NLzma2 {
HRESULT SetLzma2Prop(PROPID propID, const PROPVARIANT &prop, CLzma2EncProps &lzma2Props);
}
namespace NXz {
void CEncoder::InitCoderProps()
{
XzProps_Init(&xzProps);
}
CEncoder::CEncoder()
{
XzProps_Init(&xzProps);
_encoder = NULL;
_encoder = XzEnc_Create(&g_Alloc, &g_BigAlloc);
if (!_encoder)
throw 1;
}
CEncoder::~CEncoder()
{
if (_encoder)
XzEnc_Destroy(_encoder);
}
struct CMethodNamePair
{
UInt32 Id;
const char *Name;
};
static const CMethodNamePair g_NamePairs[] =
{
{ XZ_ID_Delta, "Delta" },
{ XZ_ID_X86, "BCJ" },
{ XZ_ID_PPC, "PPC" },
{ XZ_ID_IA64, "IA64" },
{ XZ_ID_ARM, "ARM" },
{ XZ_ID_ARMT, "ARMT" },
{ XZ_ID_SPARC, "SPARC" }
// { XZ_ID_LZMA2, "LZMA2" }
};
static int FilterIdFromName(const wchar_t *name)
{
for (unsigned i = 0; i < ARRAY_SIZE(g_NamePairs); i++)
{
const CMethodNamePair &pair = g_NamePairs[i];
if (StringsAreEqualNoCase_Ascii(name, pair.Name))
return (int)pair.Id;
}
return -1;
}
HRESULT CEncoder::SetCheckSize(UInt32 checkSizeInBytes)
{
unsigned id;
switch (checkSizeInBytes)
{
case 0: id = XZ_CHECK_NO; break;
case 4: id = XZ_CHECK_CRC32; break;
case 8: id = XZ_CHECK_CRC64; break;
case 32: id = XZ_CHECK_SHA256; break;
default: return E_INVALIDARG;
}
xzProps.checkId = id;
return S_OK;
}
HRESULT CEncoder::SetCoderProp(PROPID propID, const PROPVARIANT &prop)
{
if (propID == NCoderPropID::kNumThreads)
{
if (prop.vt != VT_UI4)
return E_INVALIDARG;
xzProps.numTotalThreads = (int)(prop.ulVal);
return S_OK;
}
if (propID == NCoderPropID::kCheckSize)
{
if (prop.vt != VT_UI4)
return E_INVALIDARG;
return SetCheckSize(prop.ulVal);
}
if (propID == NCoderPropID::kBlockSize2)
{
if (prop.vt == VT_UI4)
xzProps.blockSize = prop.ulVal;
else if (prop.vt == VT_UI8)
xzProps.blockSize = prop.uhVal.QuadPart;
else
return E_INVALIDARG;
return S_OK;
}
if (propID == NCoderPropID::kReduceSize)
{
if (prop.vt == VT_UI8)
xzProps.reduceSize = prop.uhVal.QuadPart;
else
return E_INVALIDARG;
return S_OK;
}
if (propID == NCoderPropID::kFilter)
{
if (prop.vt == VT_UI4)
{
UInt32 id32 = prop.ulVal;
if (id32 == XZ_ID_Delta)
return E_INVALIDARG;
xzProps.filterProps.id = prop.ulVal;
}
else
{
if (prop.vt != VT_BSTR)
return E_INVALIDARG;
const wchar_t *name = prop.bstrVal;
const wchar_t *end;
UInt32 id32 = ConvertStringToUInt32(name, &end);
if (end != name)
name = end;
else
{
if (IsString1PrefixedByString2_NoCase_Ascii(name, "Delta"))
{
name += 5; // strlen("Delta");
id32 = XZ_ID_Delta;
}
else
{
int filterId = FilterIdFromName(prop.bstrVal);
if (filterId < 0 /* || filterId == XZ_ID_LZMA2 */)
return E_INVALIDARG;
id32 = filterId;
}
}
if (id32 == XZ_ID_Delta)
{
wchar_t c = *name;
if (c != '-' && c != ':')
return E_INVALIDARG;
name++;
UInt32 delta = ConvertStringToUInt32(name, &end);
if (end == name || *end != 0 || delta == 0 || delta > 256)
return E_INVALIDARG;
xzProps.filterProps.delta = delta;
}
xzProps.filterProps.id = id32;
}
return S_OK;
}
return NLzma2::SetLzma2Prop(propID, prop, xzProps.lzma2Props);
}
STDMETHODIMP CEncoder::SetCoderProperties(const PROPID *propIDs,
const PROPVARIANT *coderProps, UInt32 numProps)
{
XzProps_Init(&xzProps);
for (UInt32 i = 0; i < numProps; i++)
{
RINOK(SetCoderProp(propIDs[i], coderProps[i]));
}
return S_OK;
// return SResToHRESULT(XzEnc_SetProps(_encoder, &xzProps));
}
STDMETHODIMP CEncoder::SetCoderPropertiesOpt(const PROPID *propIDs,
const PROPVARIANT *coderProps, UInt32 numProps)
{
for (UInt32 i = 0; i < numProps; i++)
{
const PROPVARIANT &prop = coderProps[i];
PROPID propID = propIDs[i];
if (propID == NCoderPropID::kExpectedDataSize)
if (prop.vt == VT_UI8)
XzEnc_SetDataSize(_encoder, prop.uhVal.QuadPart);
}
return S_OK;
}
#define RET_IF_WRAP_ERROR(wrapRes, sRes, sResErrorCode) \
if (wrapRes != S_OK /* && (sRes == SZ_OK || sRes == sResErrorCode) */) return wrapRes;
STDMETHODIMP CEncoder::Code(ISequentialInStream *inStream, ISequentialOutStream *outStream,
const UInt64 * /* inSize */, const UInt64 * /* outSize */, ICompressProgressInfo *progress)
{
CSeqInStreamWrap inWrap;
CSeqOutStreamWrap outWrap;
CCompressProgressWrap progressWrap;
inWrap.Init(inStream);
outWrap.Init(outStream);
progressWrap.Init(progress);
SRes res = XzEnc_SetProps(_encoder, &xzProps);
if (res == SZ_OK)
res = XzEnc_Encode(_encoder, &outWrap.vt, &inWrap.vt, progress ? &progressWrap.vt : NULL);
// SRes res = Xz_Encode(&outWrap.vt, &inWrap.vt, &xzProps, progress ? &progressWrap.vt : NULL);
RET_IF_WRAP_ERROR(inWrap.Res, res, SZ_ERROR_READ)
RET_IF_WRAP_ERROR(outWrap.Res, res, SZ_ERROR_WRITE)
RET_IF_WRAP_ERROR(progressWrap.Res, res, SZ_ERROR_PROGRESS)
return SResToHRESULT(res);
}
}}
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