331 lines
9.7 KiB
C++
331 lines
9.7 KiB
C++
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// 7zDecode.cpp
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#include "StdAfx.h"
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#include "7zDecode.h"
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#include "../../IPassword.h"
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#include "../../Common/LockedStream.h"
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#include "../../Common/StreamObjects.h"
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#include "../../Common/ProgressUtils.h"
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#include "../../Common/LimitedStreams.h"
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#include "../../Common/CreateCoder.h"
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#include "../../Common/FilterCoder.h"
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namespace NArchive {
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namespace N7z {
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static void ConvertFolderItemInfoToBindInfo(const CFolder &folder,
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CBindInfoEx &bindInfo)
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{
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bindInfo.Clear();
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int i;
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for (i = 0; i < folder.BindPairs.Size(); i++)
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{
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NCoderMixer::CBindPair bindPair;
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bindPair.InIndex = (UInt32)folder.BindPairs[i].InIndex;
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bindPair.OutIndex = (UInt32)folder.BindPairs[i].OutIndex;
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bindInfo.BindPairs.Add(bindPair);
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}
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UInt32 outStreamIndex = 0;
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for (i = 0; i < folder.Coders.Size(); i++)
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{
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NCoderMixer::CCoderStreamsInfo coderStreamsInfo;
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const CCoderInfo &coderInfo = folder.Coders[i];
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coderStreamsInfo.NumInStreams = (UInt32)coderInfo.NumInStreams;
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coderStreamsInfo.NumOutStreams = (UInt32)coderInfo.NumOutStreams;
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bindInfo.Coders.Add(coderStreamsInfo);
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bindInfo.CoderMethodIDs.Add(coderInfo.MethodID);
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for (UInt32 j = 0; j < coderStreamsInfo.NumOutStreams; j++, outStreamIndex++)
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if (folder.FindBindPairForOutStream(outStreamIndex) < 0)
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bindInfo.OutStreams.Add(outStreamIndex);
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}
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for (i = 0; i < folder.PackStreams.Size(); i++)
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bindInfo.InStreams.Add((UInt32)folder.PackStreams[i]);
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}
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static bool AreCodersEqual(const NCoderMixer::CCoderStreamsInfo &a1,
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const NCoderMixer::CCoderStreamsInfo &a2)
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{
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return (a1.NumInStreams == a2.NumInStreams) &&
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(a1.NumOutStreams == a2.NumOutStreams);
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}
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static bool AreBindPairsEqual(const NCoderMixer::CBindPair &a1, const NCoderMixer::CBindPair &a2)
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{
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return (a1.InIndex == a2.InIndex) &&
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(a1.OutIndex == a2.OutIndex);
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}
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static bool AreBindInfoExEqual(const CBindInfoEx &a1, const CBindInfoEx &a2)
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{
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if (a1.Coders.Size() != a2.Coders.Size())
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return false;
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int i;
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for (i = 0; i < a1.Coders.Size(); i++)
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if (!AreCodersEqual(a1.Coders[i], a2.Coders[i]))
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return false;
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if (a1.BindPairs.Size() != a2.BindPairs.Size())
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return false;
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for (i = 0; i < a1.BindPairs.Size(); i++)
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if (!AreBindPairsEqual(a1.BindPairs[i], a2.BindPairs[i]))
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return false;
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for (i = 0; i < a1.CoderMethodIDs.Size(); i++)
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if (a1.CoderMethodIDs[i] != a2.CoderMethodIDs[i])
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return false;
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if (a1.InStreams.Size() != a2.InStreams.Size())
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return false;
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if (a1.OutStreams.Size() != a2.OutStreams.Size())
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return false;
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return true;
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}
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CDecoder::CDecoder(bool multiThread)
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{
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#ifndef _ST_MODE
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multiThread = true;
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#endif
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_multiThread = multiThread;
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_bindInfoExPrevIsDefined = false;
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}
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HRESULT CDecoder::Decode(
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DECL_EXTERNAL_CODECS_LOC_VARS
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IInStream *inStream,
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UInt64 startPos,
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const UInt64 *packSizes,
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const CFolder &folderInfo,
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ISequentialOutStream *outStream,
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ICompressProgressInfo *compressProgress
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#ifndef _NO_CRYPTO
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, ICryptoGetTextPassword *getTextPassword
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#endif
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#ifdef COMPRESS_MT
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, bool mtMode, UInt32 numThreads
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#endif
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)
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{
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CObjectVector< CMyComPtr<ISequentialInStream> > inStreams;
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CLockedInStream lockedInStream;
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lockedInStream.Init(inStream);
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for (int j = 0; j < folderInfo.PackStreams.Size(); j++)
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{
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CLockedSequentialInStreamImp *lockedStreamImpSpec = new
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CLockedSequentialInStreamImp;
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CMyComPtr<ISequentialInStream> lockedStreamImp = lockedStreamImpSpec;
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lockedStreamImpSpec->Init(&lockedInStream, startPos);
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startPos += packSizes[j];
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CLimitedSequentialInStream *streamSpec = new
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CLimitedSequentialInStream;
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CMyComPtr<ISequentialInStream> inStream = streamSpec;
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streamSpec->SetStream(lockedStreamImp);
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streamSpec->Init(packSizes[j]);
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inStreams.Add(inStream);
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}
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int numCoders = folderInfo.Coders.Size();
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CBindInfoEx bindInfo;
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ConvertFolderItemInfoToBindInfo(folderInfo, bindInfo);
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bool createNewCoders;
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if (!_bindInfoExPrevIsDefined)
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createNewCoders = true;
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else
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createNewCoders = !AreBindInfoExEqual(bindInfo, _bindInfoExPrev);
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if (createNewCoders)
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{
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int i;
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_decoders.Clear();
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// _decoders2.Clear();
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_mixerCoder.Release();
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if (_multiThread)
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{
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_mixerCoderMTSpec = new NCoderMixer::CCoderMixer2MT;
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_mixerCoder = _mixerCoderMTSpec;
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_mixerCoderCommon = _mixerCoderMTSpec;
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}
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else
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{
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#ifdef _ST_MODE
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_mixerCoderSTSpec = new NCoderMixer::CCoderMixer2ST;
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_mixerCoder = _mixerCoderSTSpec;
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_mixerCoderCommon = _mixerCoderSTSpec;
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#endif
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}
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RINOK(_mixerCoderCommon->SetBindInfo(bindInfo));
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for (i = 0; i < numCoders; i++)
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{
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const CCoderInfo &coderInfo = folderInfo.Coders[i];
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CMyComPtr<ICompressCoder> decoder;
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CMyComPtr<ICompressCoder2> decoder2;
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RINOK(CreateCoder(
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EXTERNAL_CODECS_LOC_VARS
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coderInfo.MethodID, decoder, decoder2, false));
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CMyComPtr<IUnknown> decoderUnknown;
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if (coderInfo.IsSimpleCoder())
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{
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if (decoder == 0)
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return E_NOTIMPL;
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decoderUnknown = (IUnknown *)decoder;
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if (_multiThread)
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_mixerCoderMTSpec->AddCoder(decoder);
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#ifdef _ST_MODE
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else
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_mixerCoderSTSpec->AddCoder(decoder, false);
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#endif
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}
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else
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{
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if (decoder2 == 0)
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return E_NOTIMPL;
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decoderUnknown = (IUnknown *)decoder2;
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if (_multiThread)
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_mixerCoderMTSpec->AddCoder2(decoder2);
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#ifdef _ST_MODE
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else
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_mixerCoderSTSpec->AddCoder2(decoder2, false);
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#endif
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}
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_decoders.Add(decoderUnknown);
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#ifdef EXTERNAL_CODECS
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CMyComPtr<ISetCompressCodecsInfo> setCompressCodecsInfo;
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decoderUnknown.QueryInterface(IID_ISetCompressCodecsInfo, (void **)&setCompressCodecsInfo);
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if (setCompressCodecsInfo)
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{
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RINOK(setCompressCodecsInfo->SetCompressCodecsInfo(codecsInfo));
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}
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#endif
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}
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_bindInfoExPrev = bindInfo;
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_bindInfoExPrevIsDefined = true;
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}
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int i;
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_mixerCoderCommon->ReInit();
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UInt32 packStreamIndex = 0, unPackStreamIndex = 0;
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UInt32 coderIndex = 0;
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// UInt32 coder2Index = 0;
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for (i = 0; i < numCoders; i++)
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{
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const CCoderInfo &coderInfo = folderInfo.Coders[i];
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CMyComPtr<IUnknown> &decoder = _decoders[coderIndex];
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{
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CMyComPtr<ICompressSetDecoderProperties2> setDecoderProperties;
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decoder.QueryInterface(IID_ICompressSetDecoderProperties2, &setDecoderProperties);
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if (setDecoderProperties)
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{
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const CByteBuffer &properties = coderInfo.Properties;
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size_t size = properties.GetCapacity();
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if (size > 0xFFFFFFFF)
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return E_NOTIMPL;
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if (size > 0)
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{
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RINOK(setDecoderProperties->SetDecoderProperties2((const Byte *)properties, (UInt32)size));
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}
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}
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}
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#ifdef COMPRESS_MT
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if (mtMode)
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{
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CMyComPtr<ICompressSetCoderMt> setCoderMt;
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decoder.QueryInterface(IID_ICompressSetCoderMt, &setCoderMt);
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if (setCoderMt)
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{
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RINOK(setCoderMt->SetNumberOfThreads(numThreads));
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}
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}
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#endif
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#ifndef _NO_CRYPTO
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{
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CMyComPtr<ICryptoSetPassword> cryptoSetPassword;
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decoder.QueryInterface(IID_ICryptoSetPassword, &cryptoSetPassword);
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if (cryptoSetPassword)
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{
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if (getTextPassword == 0)
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return E_FAIL;
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CMyComBSTR password;
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RINOK(getTextPassword->CryptoGetTextPassword(&password));
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CByteBuffer buffer;
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UString unicodePassword(password);
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const UInt32 sizeInBytes = unicodePassword.Length() * 2;
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buffer.SetCapacity(sizeInBytes);
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for (int i = 0; i < unicodePassword.Length(); i++)
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{
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wchar_t c = unicodePassword[i];
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((Byte *)buffer)[i * 2] = (Byte)c;
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((Byte *)buffer)[i * 2 + 1] = (Byte)(c >> 8);
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}
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RINOK(cryptoSetPassword->CryptoSetPassword(
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(const Byte *)buffer, sizeInBytes));
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}
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}
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#endif
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coderIndex++;
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UInt32 numInStreams = (UInt32)coderInfo.NumInStreams;
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UInt32 numOutStreams = (UInt32)coderInfo.NumOutStreams;
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CRecordVector<const UInt64 *> packSizesPointers;
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CRecordVector<const UInt64 *> unPackSizesPointers;
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packSizesPointers.Reserve(numInStreams);
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unPackSizesPointers.Reserve(numOutStreams);
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UInt32 j;
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for (j = 0; j < numOutStreams; j++, unPackStreamIndex++)
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unPackSizesPointers.Add(&folderInfo.UnPackSizes[unPackStreamIndex]);
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for (j = 0; j < numInStreams; j++, packStreamIndex++)
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{
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int bindPairIndex = folderInfo.FindBindPairForInStream(packStreamIndex);
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if (bindPairIndex >= 0)
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packSizesPointers.Add(
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&folderInfo.UnPackSizes[(UInt32)folderInfo.BindPairs[bindPairIndex].OutIndex]);
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else
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{
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int index = folderInfo.FindPackStreamArrayIndex(packStreamIndex);
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if (index < 0)
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return E_FAIL;
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packSizesPointers.Add(&packSizes[index]);
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}
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}
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_mixerCoderCommon->SetCoderInfo(i,
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&packSizesPointers.Front(),
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&unPackSizesPointers.Front());
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}
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UInt32 mainCoder, temp;
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bindInfo.FindOutStream(bindInfo.OutStreams[0], mainCoder, temp);
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if (_multiThread)
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_mixerCoderMTSpec->SetProgressCoderIndex(mainCoder);
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/*
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else
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_mixerCoderSTSpec->SetProgressCoderIndex(mainCoder);;
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*/
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if (numCoders == 0)
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return 0;
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CRecordVector<ISequentialInStream *> inStreamPointers;
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inStreamPointers.Reserve(inStreams.Size());
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for (i = 0; i < inStreams.Size(); i++)
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inStreamPointers.Add(inStreams[i]);
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ISequentialOutStream *outStreamPointer = outStream;
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return _mixerCoder->Code(&inStreamPointers.Front(), NULL,
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inStreams.Size(), &outStreamPointer, NULL, 1, compressProgress);
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}
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}}
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