87 lines
1.9 KiB
C
87 lines
1.9 KiB
C
|
// Copyright (c) 1999 Microsoft Corporation. All Rights Reserved.
|
||
|
|
#ifndef __GUIDENUM_H__
|
||
|
|
#define __GUIDENUM_H__
|
||
|
|
|
||
|
|
#include "mediaobj.h"
|
||
|
|
|
||
|
|
template<typename T> class CArrayContainer {
|
||
|
|
public:
|
||
|
|
CArrayContainer(ULONG ulSize = 0) {
|
||
|
|
if (ulSize) {
|
||
|
|
m_ulMax = ulSize;
|
||
|
|
m_ulUsed = 0;
|
||
|
|
m_ar = (T*)malloc(ulSize * sizeof(T));
|
||
|
|
}
|
||
|
|
else
|
||
|
|
m_ar = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
~CArrayContainer() {if (m_ar) free(m_ar);}
|
||
|
|
|
||
|
|
HRESULT Add(const T& el) {
|
||
|
|
if (!m_ar) {
|
||
|
|
m_ulMax = 20;
|
||
|
|
m_ulUsed = 0;
|
||
|
|
m_ar = (T*)malloc(m_ulMax * sizeof(T));
|
||
|
|
if (!m_ar)
|
||
|
|
return E_OUTOFMEMORY;
|
||
|
|
}
|
||
|
|
else if (m_ulUsed == m_ulMax) {
|
||
|
|
ULONG ulNew = m_ulMax + 20;
|
||
|
|
T* pNew = (T*)realloc(m_ar, ulNew * sizeof(T));
|
||
|
|
if (!pNew)
|
||
|
|
return E_OUTOFMEMORY;
|
||
|
|
m_ulMax = ulNew;
|
||
|
|
m_ar = pNew;
|
||
|
|
}
|
||
|
|
m_ar[m_ulUsed++] = el;
|
||
|
|
return NOERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
T* GetNth(ULONG ulPos) {
|
||
|
|
if (ulPos >= m_ulUsed)
|
||
|
|
return NULL;
|
||
|
|
return &m_ar[ulPos];
|
||
|
|
}
|
||
|
|
|
||
|
|
ULONG GetSize(void) {
|
||
|
|
return m_ulUsed;
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
T* m_ar;
|
||
|
|
ULONG m_ulMax;
|
||
|
|
ULONG m_ulUsed;
|
||
|
|
};
|
||
|
|
|
||
|
|
// implements IEnumDMO, which is returned by DMO enumeration API
|
||
|
|
class CEnumDMOCLSID : public IEnumDMO {
|
||
|
|
public:
|
||
|
|
CEnumDMOCLSID();
|
||
|
|
~CEnumDMOCLSID();
|
||
|
|
|
||
|
|
// IUnknown
|
||
|
|
STDMETHODIMP QueryInterface(REFIID riid, void **ppv);
|
||
|
|
STDMETHODIMP_(ULONG) AddRef();
|
||
|
|
STDMETHODIMP_(ULONG) Release();
|
||
|
|
|
||
|
|
// enum
|
||
|
|
STDMETHODIMP Next(ULONG celt, CLSID *pclsidItems, WCHAR **pszNames, ULONG *pceltFetched);
|
||
|
|
STDMETHODIMP Skip(ULONG celt);
|
||
|
|
STDMETHODIMP Reset(void);
|
||
|
|
STDMETHODIMP Clone(IEnumDMO **ppenum);
|
||
|
|
|
||
|
|
// private
|
||
|
|
void Add(REFCLSID clsidDMO, WCHAR *szName);
|
||
|
|
private:
|
||
|
|
typedef struct {
|
||
|
|
CLSID clsid;
|
||
|
|
WCHAR *szName;
|
||
|
|
} Entry;
|
||
|
|
volatile long m_cRef;
|
||
|
|
CArrayContainer<Entry> m_store;
|
||
|
|
ULONG m_ulPos;
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif //__GUIDENUM_H__
|