diff options
Diffstat (limited to 'dll/src/baseclasses/combase.cpp')
| -rw-r--r-- | dll/src/baseclasses/combase.cpp | 265 |
1 files changed, 0 insertions, 265 deletions
diff --git a/dll/src/baseclasses/combase.cpp b/dll/src/baseclasses/combase.cpp deleted file mode 100644 index ec62a88..0000000 --- a/dll/src/baseclasses/combase.cpp +++ /dev/null @@ -1,265 +0,0 @@ -//------------------------------------------------------------------------------
-// File: ComBase.cpp
-//
-// Desc: DirectShow base classes - implements class hierarchy for creating
-// COM objects.
-//
-// Copyright (c) 1992-2001 Microsoft Corporation. All rights reserved.
-//------------------------------------------------------------------------------
-
-
-#include <streams.h>
-#pragma warning( disable : 4514 ) // Disable warnings re unused inline functions
-
-
-/* Define the static member variable */
-
-LONG CBaseObject::m_cObjects = 0;
-
-
-/* Constructor */
-
-CBaseObject::CBaseObject(__in_opt LPCTSTR pName)
-{
- /* Increment the number of active objects */
- InterlockedIncrement(&m_cObjects);
-
-#ifdef DEBUG
-
-#ifdef UNICODE
- m_dwCookie = DbgRegisterObjectCreation(0, pName);
-#else
- m_dwCookie = DbgRegisterObjectCreation(pName, 0);
-#endif
-
-#endif
-}
-
-#ifdef UNICODE
-CBaseObject::CBaseObject(const char *pName)
-{
- /* Increment the number of active objects */
- InterlockedIncrement(&m_cObjects);
-
-#ifdef DEBUG
- m_dwCookie = DbgRegisterObjectCreation(pName, 0);
-#endif
-}
-#endif
-
-HINSTANCE hlibOLEAut32;
-
-/* Destructor */
-
-CBaseObject::~CBaseObject()
-{
- /* Decrement the number of objects active */
- if (InterlockedDecrement(&m_cObjects) == 0) {
- if (hlibOLEAut32) {
- FreeLibrary(hlibOLEAut32);
-
- hlibOLEAut32 = 0;
- }
- };
-
-
-#ifdef DEBUG
- DbgRegisterObjectDestruction(m_dwCookie);
-#endif
-}
-
-static const TCHAR szOle32Aut[] = TEXT("OleAut32.dll");
-
-HINSTANCE LoadOLEAut32()
-{
- if (hlibOLEAut32 == 0) {
-
- hlibOLEAut32 = LoadLibrary(szOle32Aut);
- }
-
- return hlibOLEAut32;
-}
-
-
-/* Constructor */
-
-// We know we use "this" in the initialization list, we also know we don't modify *phr.
-#pragma warning( disable : 4355 4100 )
-CUnknown::CUnknown(__in_opt LPCTSTR pName, __in_opt LPUNKNOWN pUnk)
-: CBaseObject(pName)
-/* Start the object with a reference count of zero - when the */
-/* object is queried for it's first interface this may be */
-/* incremented depending on whether or not this object is */
-/* currently being aggregated upon */
-, m_cRef(0)
-/* Set our pointer to our IUnknown interface. */
-/* If we have an outer, use its, otherwise use ours. */
-/* This pointer effectivly points to the owner of */
-/* this object and can be accessed by the GetOwner() method. */
-, m_pUnknown( pUnk != 0 ? pUnk : reinterpret_cast<LPUNKNOWN>( static_cast<PNDUNKNOWN>(this) ) )
- /* Why the double cast? Well, the inner cast is a type-safe cast */
- /* to pointer to a type from which we inherit. The second is */
- /* type-unsafe but works because INonDelegatingUnknown "behaves */
- /* like" IUnknown. (Only the names on the methods change.) */
-{
- // Everything we need to do has been done in the initializer list
-}
-
-// This does the same as above except it has a useless HRESULT argument
-// use the previous constructor, this is just left for compatibility...
-CUnknown::CUnknown(__in_opt LPCTSTR pName, __in_opt LPUNKNOWN pUnk, __inout_opt HRESULT *phr) :
- CBaseObject(pName),
- m_cRef(0),
- m_pUnknown( pUnk != 0 ? pUnk : reinterpret_cast<LPUNKNOWN>( static_cast<PNDUNKNOWN>(this) ) )
-{
-}
-
-#ifdef UNICODE
-CUnknown::CUnknown(__in_opt LPCSTR pName, __in_opt LPUNKNOWN pUnk)
-: CBaseObject(pName), m_cRef(0),
- m_pUnknown( pUnk != 0 ? pUnk : reinterpret_cast<LPUNKNOWN>( static_cast<PNDUNKNOWN>(this) ) )
-{ }
-
-CUnknown::CUnknown(__in_opt LPCSTR pName, __in_opt LPUNKNOWN pUnk, __inout_opt HRESULT *phr) :
- CBaseObject(pName), m_cRef(0),
- m_pUnknown( pUnk != 0 ? pUnk : reinterpret_cast<LPUNKNOWN>( static_cast<PNDUNKNOWN>(this) ) )
-{ }
-
-#endif
-
-#pragma warning( default : 4355 4100 )
-
-
-/* QueryInterface */
-
-STDMETHODIMP CUnknown::NonDelegatingQueryInterface(REFIID riid, __deref_out void ** ppv)
-{
- CheckPointer(ppv,E_POINTER);
- ValidateReadWritePtr(ppv,sizeof(PVOID));
-
- /* We know only about IUnknown */
-
- if (riid == IID_IUnknown) {
- GetInterface((LPUNKNOWN) (PNDUNKNOWN) this, ppv);
- return NOERROR;
- } else {
- *ppv = NULL;
- return E_NOINTERFACE;
- }
-}
-
-/* We have to ensure that we DON'T use a max macro, since these will typically */
-/* lead to one of the parameters being evaluated twice. Since we are worried */
-/* about concurrency, we can't afford to access the m_cRef twice since we can't */
-/* afford to run the risk that its value having changed between accesses. */
-
-template<class T> inline static T ourmax( const T & a, const T & b )
-{
- return a > b ? a : b;
-}
-
-/* AddRef */
-
-STDMETHODIMP_(ULONG) CUnknown::NonDelegatingAddRef()
-{
- LONG lRef = InterlockedIncrement( &m_cRef );
- ASSERT(lRef > 0);
- DbgLog((LOG_MEMORY,3,TEXT(" Obj %d ref++ = %d"),
- m_dwCookie, m_cRef));
- return ourmax(ULONG(m_cRef), 1ul);
-}
-
-
-/* Release */
-
-STDMETHODIMP_(ULONG) CUnknown::NonDelegatingRelease()
-{
- /* If the reference count drops to zero delete ourselves */
-
- LONG lRef = InterlockedDecrement( &m_cRef );
- ASSERT(lRef >= 0);
-
- DbgLog((LOG_MEMORY,3,TEXT(" Object %d ref-- = %d"),
- m_dwCookie, m_cRef));
- if (lRef == 0) {
-
- // COM rules say we must protect against re-entrancy.
- // If we are an aggregator and we hold our own interfaces
- // on the aggregatee, the QI for these interfaces will
- // addref ourselves. So after doing the QI we must release
- // a ref count on ourselves. Then, before releasing the
- // private interface, we must addref ourselves. When we do
- // this from the destructor here it will result in the ref
- // count going to 1 and then back to 0 causing us to
- // re-enter the destructor. Hence we add an extra refcount here
- // once we know we will delete the object.
- // for an example aggregator see filgraph\distrib.cpp.
-
- m_cRef++;
-
- delete this;
- return ULONG(0);
- } else {
- // Don't touch m_cRef again even in this leg as the object
- // may have just been released on another thread too
- return ourmax(ULONG(lRef), 1ul);
- }
-}
-
-
-/* Return an interface pointer to a requesting client
- performing a thread safe AddRef as necessary */
-
-STDAPI GetInterface(LPUNKNOWN pUnk, __out void **ppv)
-{
- CheckPointer(ppv, E_POINTER);
- *ppv = pUnk;
- pUnk->AddRef();
- return NOERROR;
-}
-
-
-/* Compares two interfaces and returns TRUE if they are on the same object */
-
-BOOL WINAPI IsEqualObject(IUnknown *pFirst, IUnknown *pSecond)
-{
- /* Different objects can't have the same interface pointer for
- any interface
- */
- if (pFirst == pSecond) {
- return TRUE;
- }
- /* OK - do it the hard way - check if they have the same
- IUnknown pointers - a single object can only have one of these
- */
- LPUNKNOWN pUnknown1; // Retrieve the IUnknown interface
- LPUNKNOWN pUnknown2; // Retrieve the other IUnknown interface
- HRESULT hr; // General OLE return code
-
- ASSERT(pFirst);
- ASSERT(pSecond);
-
- /* See if the IUnknown pointers match */
-
- hr = pFirst->QueryInterface(IID_IUnknown,(void **) &pUnknown1);
- if (FAILED(hr)) {
- return FALSE;
- }
- ASSERT(pUnknown1);
-
- /* Release the extra interface we hold */
-
- pUnknown1->Release();
-
- hr = pSecond->QueryInterface(IID_IUnknown,(void **) &pUnknown2);
- if (FAILED(hr)) {
- return FALSE;
- }
- ASSERT(pUnknown2);
-
- /* Release the extra interface we hold */
-
- pUnknown2->Release();
- return (pUnknown1 == pUnknown2);
-}
-
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