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// CoderLoader.h
#ifndef __CODERLOADER_H
#define __CODERLOADER_H
#include "../../../Common/String.h"
#include "../../../Common/MyCom.h"
#include "../../../Windows/DLL.h"
#include "../../ICoder.h"
typedef UInt32 (WINAPI * CreateObjectPointer)(
const GUID *clsID,
const GUID *interfaceID,
void **outObject);
class CCoderLibrary: public NWindows::NDLL::CLibrary
{
public:
HRESULT CreateObject(REFGUID clsID, REFGUID iid, void **obj)
{
CreateObjectPointer createObject = (CreateObjectPointer)
GetProcAddress("CreateObject");
if (createObject == NULL)
return GetLastError();
return createObject(&clsID, &iid, obj);
}
HRESULT CreateFilter(REFGUID clsID, ICompressFilter **filter)
{
return CreateObject(clsID, IID_ICompressFilter, (void **)filter);
}
HRESULT CreateCoder(REFGUID clsID, ICompressCoder **coder)
{
return CreateObject(clsID, IID_ICompressCoder, (void **)coder);
}
HRESULT CreateCoderSpec(REFGUID clsID, ICompressCoder **coder);
HRESULT LoadAndCreateFilter(LPCTSTR filePath, REFGUID clsID, ICompressFilter **filter)
{
CCoderLibrary libTemp;
if (!libTemp.Load(filePath))
return GetLastError();
RINOK(libTemp.CreateFilter(clsID, filter));
Attach(libTemp.Detach());
return S_OK;
}
HRESULT LoadAndCreateCoder(LPCTSTR filePath, REFGUID clsID, ICompressCoder **coder)
{
CCoderLibrary libTemp;
if (!libTemp.Load(filePath))
return GetLastError();
RINOK(libTemp.CreateCoder(clsID, coder));
Attach(libTemp.Detach());
return S_OK;
}
HRESULT LoadAndCreateCoderSpec(LPCTSTR filePath, REFGUID clsID, ICompressCoder **coder);
HRESULT CreateCoder2(REFGUID clsID, ICompressCoder2 **coder)
{
CreateObjectPointer createObject = (CreateObjectPointer)
GetProcAddress("CreateObject");
if (createObject == NULL)
return GetLastError();
return createObject(&clsID, &IID_ICompressCoder2, (void **)coder);
}
HRESULT LoadAndCreateCoder2(LPCTSTR filePath, REFGUID clsID, ICompressCoder2 **coder)
{
CCoderLibrary libTemp;
if (!libTemp.Load(filePath))
return GetLastError();
RINOK(libTemp.CreateCoder2(clsID, coder));
Attach(libTemp.Detach());
return S_OK;
}
};
class CCoderLibraries
{
struct CPathToLibraryPair
{
CSysString Path;
CCoderLibrary Libary;
};
CObjectVector<CPathToLibraryPair> Pairs;
public:
int FindPath(LPCTSTR filePath)
{
for (int i = 0; i < Pairs.Size(); i++)
if (Pairs[i].Path.CompareNoCase(filePath) == 0)
return i;
return -1;
}
HRESULT CreateCoder(LPCTSTR filePath, REFGUID clsID, ICompressCoder **coder)
{
int index = FindPath(filePath);
if (index < 0)
{
CPathToLibraryPair pair;
RINOK(pair.Libary.LoadAndCreateCoder(filePath, clsID, coder));
pair.Path = filePath;
Pairs.Add(pair);
pair.Libary.Detach();
return S_OK;
}
return Pairs[index].Libary.CreateCoder(clsID, coder);
}
HRESULT CreateCoderSpec(LPCTSTR filePath, REFGUID clsID, ICompressCoder **coder)
{
int index = FindPath(filePath);
if (index < 0)
{
CPathToLibraryPair pair;
RINOK(pair.Libary.LoadAndCreateCoderSpec(filePath, clsID, coder));
pair.Path = filePath;
Pairs.Add(pair);
pair.Libary.Detach();
return S_OK;
}
return Pairs[index].Libary.CreateCoderSpec(clsID, coder);
}
HRESULT CreateCoder2(LPCTSTR filePath, REFGUID clsID, ICompressCoder2 **coder)
{
int index = FindPath(filePath);
if (index < 0)
{
CPathToLibraryPair pair;
RINOK(pair.Libary.LoadAndCreateCoder2(filePath, clsID, coder));
pair.Path = filePath;
Pairs.Add(pair);
pair.Libary.Detach();
return S_OK;
}
return Pairs[index].Libary.CreateCoder2(clsID, coder);
}
};
#endif
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