diff options
author | kh1 <karsten.heimrich@nokia.com> | 2012-03-15 14:53:47 +0100 |
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committer | Karsten Heimrich <karsten.heimrich@nokia.com> | 2012-03-19 16:14:04 +0100 |
commit | be3b47d0d504a3409ce66bd77bb8c0acff87c4f5 (patch) | |
tree | 09dfb02d484a4f395991972b828da71400fb761a /src/libs/7zip/win/CPP/7zip/Compress/LzmaEncoder.cpp | |
parent | 9fd62353cf7f973d78cd2093328ac15b5c4980b6 (diff) |
Reorganize the tree, have better ifw.pri. Shadow build support.
Change-Id: I01fb12537f863ed0744979973c7e4153889cc5cb
Reviewed-by: Tim Jenssen <tim.jenssen@nokia.com>
Diffstat (limited to 'src/libs/7zip/win/CPP/7zip/Compress/LzmaEncoder.cpp')
-rw-r--r-- | src/libs/7zip/win/CPP/7zip/Compress/LzmaEncoder.cpp | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/src/libs/7zip/win/CPP/7zip/Compress/LzmaEncoder.cpp b/src/libs/7zip/win/CPP/7zip/Compress/LzmaEncoder.cpp new file mode 100644 index 000000000..9bdedaeb6 --- /dev/null +++ b/src/libs/7zip/win/CPP/7zip/Compress/LzmaEncoder.cpp @@ -0,0 +1,149 @@ +// LzmaEncoder.cpp + +#include "StdAfx.h" + +#include "../../../C/Alloc.h" + +#include "../Common/CWrappers.h" +#include "../Common/StreamUtils.h" + +#include "LzmaEncoder.h" + +namespace NCompress { +namespace NLzma { + +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() +{ + _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; +} + +HRESULT SetLzmaProp(PROPID propID, const PROPVARIANT &prop, CLzmaEncProps &ep) +{ + if (propID == NCoderPropID::kMatchFinder) + { + if (prop.vt != VT_BSTR) + return E_INVALIDARG; + return ParseMatchFinder(prop.bstrVal, &ep.btMode, &ep.numHashBytes) ? S_OK : E_INVALIDARG; + } + if (prop.vt != VT_UI4) + return E_INVALIDARG; + UInt32 v = prop.ulVal; + switch (propID) + { + case NCoderPropID::kNumFastBytes: ep.fb = v; break; + case NCoderPropID::kMatchFinderCycles: ep.mc = v; break; + case NCoderPropID::kAlgorithm: ep.algo = v; break; + case NCoderPropID::kDictionarySize: ep.dictSize = v; break; + case NCoderPropID::kPosStateBits: ep.pb = v; break; + case NCoderPropID::kLitPosBits: ep.lp = v; break; + case NCoderPropID::kLitContextBits: ep.lc = v; break; + default: return E_INVALIDARG; + } + return S_OK; +} + +STDMETHODIMP CEncoder::SetCoderProperties(const PROPID *propIDs, + const PROPVARIANT *coderProps, UInt32 numProps) +{ + CLzmaEncProps props; + LzmaEncProps_Init(&props); + + for (UInt32 i = 0; i < numProps; i++) + { + const PROPVARIANT &prop = coderProps[i]; + PROPID propID = propIDs[i]; + switch (propID) + { + case NCoderPropID::kEndMarker: + if (prop.vt != VT_BOOL) return E_INVALIDARG; props.writeEndMark = (prop.boolVal == VARIANT_TRUE); break; + case NCoderPropID::kNumThreads: + if (prop.vt != VT_UI4) return E_INVALIDARG; props.numThreads = prop.ulVal; break; + default: + RINOK(SetLzmaProp(propID, prop, props)); + } + } + 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::Code(ISequentialInStream *inStream, ISequentialOutStream *outStream, + const UInt64 * /* inSize */, const UInt64 * /* outSize */, ICompressProgressInfo *progress) +{ + CSeqInStreamWrap inWrap(inStream); + CSeqOutStreamWrap outWrap(outStream); + CCompressProgressWrap progressWrap(progress); + + SRes res = LzmaEnc_Encode(_encoder, &outWrap.p, &inWrap.p, progress ? &progressWrap.p : NULL, &g_Alloc, &g_BigAlloc); + if (res == SZ_ERROR_READ && inWrap.Res != S_OK) + return inWrap.Res; + if (res == SZ_ERROR_WRITE && outWrap.Res != S_OK) + return outWrap.Res; + if (res == SZ_ERROR_PROGRESS && progressWrap.Res != S_OK) + return progressWrap.Res; + return SResToHRESULT(res); +} + +}} |