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// LZMA/Encoder.cpp
#include "StdAfx.h"
#include <stdio.h>
#ifdef _WIN32
#define USE_ALLOCA
#endif
#ifdef USE_ALLOCA
#ifdef _WIN32
#include <malloc.h>
#else
#include <stdlib.h>
#endif
#endif
#include "LZMAEncoder.h"
#include "../../Common/StreamUtils.h"
extern "C"
{
#include "../../../../C/Alloc.h"
}
static HRESULT SResToHRESULT(SRes res)
{
switch(res)
{
case SZ_OK: return S_OK;
case SZ_ERROR_MEM: return E_OUTOFMEMORY;
case SZ_ERROR_PARAM: return E_INVALIDARG;
// case SZ_ERROR_THREAD: return E_FAIL;
}
return E_FAIL;
}
namespace NCompress {
namespace NLZMA {
static const UInt32 kStreamStepSize = (UInt32)1 << 31;
static SRes MyRead(void *object, void *data, size_t *size)
{
UInt32 curSize = ((*size < kStreamStepSize) ? (UInt32)*size : kStreamStepSize);
HRESULT res = ((CSeqInStream *)object)->RealStream->Read(data, curSize, &curSize);
*size = curSize;
return (SRes)res;
}
static size_t MyWrite(void *object, const void *data, size_t size)
{
CSeqOutStream *p = (CSeqOutStream *)object;
p->Res = WriteStream(p->RealStream, data, size);
if (p->Res != 0)
return 0;
return size;
}
static void *SzBigAlloc(void *, size_t size) { return BigAlloc(size); }
static void SzBigFree(void *, void *address) { BigFree(address); }
static ISzAlloc g_BigAlloc = { SzBigAlloc, SzBigFree };
static void *SzAlloc(void *, size_t size) { return MyAlloc(size); }
static void SzFree(void *, void *address) { MyFree(address); }
static ISzAlloc g_Alloc = { SzAlloc, SzFree };
CEncoder::CEncoder()
{
_seqInStream.SeqInStream.Read = MyRead;
_seqOutStream.SeqOutStream.Write = MyWrite;
_encoder = 0;
_encoder = LzmaEnc_Create(&g_Alloc);
if (_encoder == 0)
throw 1;
}
CEncoder::~CEncoder()
{
if (_encoder != 0)
LzmaEnc_Destroy(_encoder, &g_Alloc, &g_BigAlloc);
}
inline wchar_t GetUpperChar(wchar_t c)
{
if (c >= 'a' && c <= 'z')
c -= 0x20;
return c;
}
static int ParseMatchFinder(const wchar_t *s, int *btMode, int *numHashBytes)
{
wchar_t c = GetUpperChar(*s++);
if (c == L'H')
{
if (GetUpperChar(*s++) != L'C')
return 0;
int numHashBytesLoc = (int)(*s++ - L'0');
if (numHashBytesLoc < 4 || numHashBytesLoc > 4)
return 0;
if (*s++ != 0)
return 0;
*btMode = 0;
*numHashBytes = numHashBytesLoc;
return 1;
}
if (c != L'B')
return 0;
if (GetUpperChar(*s++) != L'T')
return 0;
int numHashBytesLoc = (int)(*s++ - L'0');
if (numHashBytesLoc < 2 || numHashBytesLoc > 4)
return 0;
c = GetUpperChar(*s++);
if (c != L'\0')
return 0;
*btMode = 1;
*numHashBytes = numHashBytesLoc;
return 1;
}
STDMETHODIMP CEncoder::SetCoderProperties(const PROPID *propIDs,
const PROPVARIANT *properties, UInt32 numProperties)
{
CLzmaEncProps props;
LzmaEncProps_Init(&props);
for (UInt32 i = 0; i < numProperties; i++)
{
const PROPVARIANT &prop = properties[i];
switch (propIDs[i])
{
case NCoderPropID::kNumFastBytes:
if (prop.vt != VT_UI4) return E_INVALIDARG; props.fb = prop.ulVal; break;
case NCoderPropID::kMatchFinderCycles:
if (prop.vt != VT_UI4) return E_INVALIDARG; props.mc = prop.ulVal; break;
case NCoderPropID::kAlgorithm:
if (prop.vt != VT_UI4) return E_INVALIDARG; props.algo = prop.ulVal; break;
case NCoderPropID::kDictionarySize:
if (prop.vt != VT_UI4) return E_INVALIDARG; props.dictSize = prop.ulVal; break;
case NCoderPropID::kPosStateBits:
if (prop.vt != VT_UI4) return E_INVALIDARG; props.pb = prop.ulVal; break;
case NCoderPropID::kLitPosBits:
if (prop.vt != VT_UI4) return E_INVALIDARG; props.lp = prop.ulVal; break;
case NCoderPropID::kLitContextBits:
if (prop.vt != VT_UI4) return E_INVALIDARG; props.lc = prop.ulVal; break;
case NCoderPropID::kNumThreads:
if (prop.vt != VT_UI4) return E_INVALIDARG; props.numThreads = prop.ulVal; break;
case NCoderPropID::kMultiThread:
if (prop.vt != VT_BOOL) return E_INVALIDARG; props.numThreads = ((prop.boolVal == VARIANT_TRUE) ? 2 : 1); break;
case NCoderPropID::kEndMarker:
if (prop.vt != VT_BOOL) return E_INVALIDARG; props.writeEndMark = (prop.boolVal == VARIANT_TRUE); break;
case NCoderPropID::kMatchFinder:
if (prop.vt != VT_BSTR) return E_INVALIDARG;
if (!ParseMatchFinder(prop.bstrVal, &props.btMode, &props.numHashBytes /* , &_matchFinderBase.skipModeBits */))
return E_INVALIDARG; break;
default:
return E_INVALIDARG;
}
}
return SResToHRESULT(LzmaEnc_SetProps(_encoder, &props));
}
STDMETHODIMP CEncoder::WriteCoderProperties(ISequentialOutStream *outStream)
{
Byte props[LZMA_PROPS_SIZE];
size_t size = LZMA_PROPS_SIZE;
RINOK(LzmaEnc_WriteProperties(_encoder, props, &size));
return WriteStream(outStream, props, size);
}
STDMETHODIMP CEncoder::SetOutStream(ISequentialOutStream *outStream)
{
_seqOutStream.RealStream = outStream;
_seqOutStream.Res = S_OK;
return S_OK;
}
STDMETHODIMP CEncoder::ReleaseOutStream()
{
_seqOutStream.RealStream.Release();
return S_OK;
}
typedef struct _CCompressProgressImp
{
ICompressProgress p;
ICompressProgressInfo *Progress;
HRESULT Res;
} CCompressProgressImp;
#define PROGRESS_UNKNOWN_VALUE ((UInt64)(Int64)-1)
#define CONVERT_PR_VAL(x) (x == PROGRESS_UNKNOWN_VALUE ? NULL : &x)
SRes CompressProgress(void *pp, UInt64 inSize, UInt64 outSize)
{
CCompressProgressImp *p = (CCompressProgressImp *)pp;
p->Res = p->Progress->SetRatioInfo(CONVERT_PR_VAL(inSize), CONVERT_PR_VAL(outSize));
return (SRes)p->Res;
}
STDMETHODIMP CEncoder::Code(ISequentialInStream *inStream,
ISequentialOutStream *outStream, const UInt64 * /* inSize */,
const UInt64 * /* outSize */,
ICompressProgressInfo *progress)
{
CCompressProgressImp progressImp;
progressImp.p.Progress = CompressProgress;
progressImp.Progress = progress;
progressImp.Res = SZ_OK;
_seqInStream.RealStream = inStream;
SetOutStream(outStream);
SRes res = LzmaEnc_Encode(_encoder, &_seqOutStream.SeqOutStream, &_seqInStream.SeqInStream, progress ? &progressImp.p : NULL, &g_Alloc, &g_BigAlloc);
ReleaseOutStream();
if (res == SZ_ERROR_WRITE && _seqOutStream.Res != S_OK)
return _seqOutStream.Res;
if (res == SZ_ERROR_PROGRESS && progressImp.Res != S_OK)
return progressImp.Res;
return SResToHRESULT(res);
}
}}
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