+
−// MethodProps.cpp
+
−
+
−#include "StdAfx.h"
+
−
+
−#include "MethodProps.h"
+
−#include "../../Common/MyCom.h"
+
−
+
−static UInt64 k_LZMA = 0x030101;
+
−// static UInt64 k_LZMA2 = 0x030102;
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−
+
−HRESULT SetMethodProperties(const CMethod &method, const UInt64 *inSizeForReduce, IUnknown *coder)
+
−{
+
−  bool tryReduce = false;
+
−  UInt32 reducedDictionarySize = 1 << 10;
+
−  if (inSizeForReduce != 0 && (method.Id == k_LZMA /* || methodFull.MethodID == k_LZMA2 */))
+
−  {
+
−    for (;;)
+
−    {
+
−      const UInt32 step = (reducedDictionarySize >> 1);
+
−      if (reducedDictionarySize >= *inSizeForReduce)
+
−      {
+
−        tryReduce = true;
+
−        break;
+
−      }
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−      reducedDictionarySize += step;
+
−      if (reducedDictionarySize >= *inSizeForReduce)
+
−      {
+
−        tryReduce = true;
+
−        break;
+
−      }
+
−      if (reducedDictionarySize >= ((UInt32)3 << 30))
+
−        break;
+
−      reducedDictionarySize += step;
+
−    }
+
−  }
+
−
+
−  {
+
−    int numProperties = method.Properties.Size();
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−    CMyComPtr<ICompressSetCoderProperties> setCoderProperties;
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−    coder->QueryInterface(IID_ICompressSetCoderProperties, (void **)&setCoderProperties);
+
−    if (setCoderProperties == NULL)
+
−    {
+
−      if (numProperties != 0)
+
−        return E_INVALIDARG;
+
−    }
+
−    else
+
−    {
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−      CRecordVector<PROPID> propIDs;
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−      NWindows::NCOM::CPropVariant *values = new NWindows::NCOM::CPropVariant[numProperties];
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−      HRESULT res = S_OK;
+
−      try
+
−      {
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−        for (int i = 0; i < numProperties; i++)
+
−        {
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−          const CProp &prop = method.Properties[i];
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−          propIDs.Add(prop.Id);
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−          NWindows::NCOM::CPropVariant &value = values[i];
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−          value = prop.Value;
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−          // if (tryReduce && prop.Id == NCoderPropID::kDictionarySize && value.vt == VT_UI4 && reducedDictionarySize < value.ulVal)
+
−          if (tryReduce)
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−            if (prop.Id == NCoderPropID::kDictionarySize)
+
−              if (value.vt == VT_UI4)
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−                if (reducedDictionarySize < value.ulVal)
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−            value.ulVal = reducedDictionarySize;
+
−        }
+
−        CMyComPtr<ICompressSetCoderProperties> setCoderProperties;
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−        coder->QueryInterface(IID_ICompressSetCoderProperties, (void **)&setCoderProperties);
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−        res = setCoderProperties->SetCoderProperties(&propIDs.Front(), values, numProperties);
+
−      }
+
−      catch(...)
+
−      {
+
−        delete []values;
+
−        throw;
+
−      }
+
−      delete []values;
+
−      RINOK(res);
+
−    }
+
−  }
+
− 
+
−  /*
+
−  CMyComPtr<ICompressWriteCoderProperties> writeCoderProperties;
+
−  coder->QueryInterface(IID_ICompressWriteCoderProperties, (void **)&writeCoderProperties);
+
−  if (writeCoderProperties != NULL)
+
−  {
+
−    CSequentialOutStreamImp *outStreamSpec = new CSequentialOutStreamImp;
+
−    CMyComPtr<ISequentialOutStream> outStream(outStreamSpec);
+
−    outStreamSpec->Init();
+
−    RINOK(writeCoderProperties->WriteCoderProperties(outStream));
+
−    size_t size = outStreamSpec->GetSize();
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−    filterProps.SetCapacity(size);
+
−    memmove(filterProps, outStreamSpec->GetBuffer(), size);
+
−  }
+
−  */
+
−  return S_OK;
+
−}
+
−