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|
/****************************************************************************
*
* $Id: pncom.h 7 2003-05-30 02:18:02Z gabest $
*
* Copyright (C) 1995-1999 RealNetworks, Inc. All rights reserved.
*
* http://www.real.com/devzone
*
* This program contains proprietary
* information of Progressive Networks, Inc, and is licensed
* subject to restrictions on use and distribution.
*
*
* Component Object Model defines, and macros
*
* This file defines items required for COM interfaces in RealMedia and
* Progressive Networks SDKs.
*
*
*/
#ifndef _PNCOM_H_
#define _PNCOM_H_
#include "pntypes.h" /* Needed for most type definitions */
#include "string.h"
// have to use the double expansion to get the prescan level
#define STATCONCAT1(w,x,y,z) STATCONCAT2(w,x,y,z)
#define STATCONCAT2(w,x,y,z) w##x##y##z
#ifdef _STATICALLY_LINKED
#ifndef _PLUGINNAME
#define ENTRYPOINT(func) STATCONCAT1(entrypoint_error_symbol_should_not_be_needed,_PLUGINNAME,_,func)
#else /* _PLUGINNAME */
#define ENTRYPOINT(func) STATCONCAT1(entrypoint_for_,_PLUGINNAME,_,func)
#endif
#else /* _STATICALLY_LINKED */
#define ENTRYPOINT(func) func
#endif
/*
* We include objbase.h when building for windows so that pncom.h can
* easily be used in any windows code.
*/
#ifdef _WIN32
#include <objbase.h>
#endif /* _WIN32 */
#include "pnresult.h"
/*
* REF:
* Use this for reference parameters, so that C users can
* use the interface as well.
*/
#if defined(__cplusplus)
#define REF(type) type&
#else
#define REF(type) const type * const
#endif
/*
* CONSTMETHOD:
* Use this for constant methods in an interface
* Compiles away under C
*/
#if !defined( CONSTMETHOD )
#if defined(__cplusplus)
#define CONSTMETHOD const
#else
#define CONSTMETHOD
#endif
#endif
/*
* CALL:
*
* Used by C users to easily call a function through an interface
*
* EXAMPLE:
*
* pIFooObject->CALL(IFoo,DoSomething)(bar);
*
*/
#if !defined(__cplusplus) || defined(CINTERFACE)
#define CALL(iface, func) iface##Vtbl->func
#endif
#define _INTERFACE struct
/*
* If useing windows.h or the windows implementation of COM
* these defines are not needed.
*/
#if !defined( _OBJBASE_H_ )
#ifdef _WIN16
typedef unsigned int MMRESULT;
#define FAR _far
#else
#define FAR
#endif /* WIN16 */
#define PASCAL _pascal
#define CDECL _cdecl
/*
* EXTERN_C
*/
#ifndef EXTERN_C
#ifdef __cplusplus
#define EXTERN_C extern "C"
#else
#define EXTERN_C extern
#endif
#endif
#ifdef OLDERRORCODES
#ifndef MAKE_HRESULT
#define MAKE_HRESULT(sev,fac,code) ((HRESULT) (((unsigned long)(sev)<<31) | ((unsigned long)(fac)<<16) | ((unsigned long)(code))))
#endif /*MAKE_HRESULT*/
#endif /* OLDERRORCODES */
/*
* STDMETHODCALLTYPE
*/
#ifndef STDMETHODCALLTYPE
#if defined(_WIN32) || defined(_MPPC_)
#ifdef _MPPC_
#define STDMETHODCALLTYPE __cdecl
#else
#define STDMETHODCALLTYPE __stdcall
#endif
#elif defined(_WIN16)
#define STDMETHODCALLTYPE __export FAR CDECL
#else
#define STDMETHODCALLTYPE
#endif
#endif
/*
* STDMETHODVCALLTYPE
*/
#ifndef STDMETHODVCALLTYPE
#if defined(_WINDOWS) || defined(_MPPC_)
#define STDMETHODVCALLTYPE __cdecl
#else
#define STDMETHODVCALLTYPE
#endif
#endif
/*
* STDAPICALLTYPE
*/
#ifndef STDAPICALLTYPE
#if defined(_WIN32) || defined(_MPPC_)
#define STDAPICALLTYPE __stdcall
#elif defined(_WIN16)
#define STDAPICALLTYPE __export FAR PASCAL
#else
#define STDAPICALLTYPE
#endif
#endif
/*
* STDAPIVCALLTYPE
*/
#ifndef STDAPIVCALLTYPE
#if defined(_WINDOWS) || defined(_MPPC_)
#define STDAPIVCALLTYPE __cdecl
#else
#define STDAPIVCALLTYPE
#endif
#endif
/*
* Standard API defines:
*
* NOTE: the 'V' versions allow Variable Argument lists.
*
* STDAPI
* STDAPI_(type)
* STDAPIV
* STDAPIV_(type)
*/
#ifndef STDAPI
#define STDAPI EXTERN_C PN_RESULT STDAPICALLTYPE
#endif
#ifndef STDAPI_
#define STDAPI_(type) EXTERN_C type STDAPICALLTYPE
#endif
#ifndef STDAPIV
#define STDAPIV EXTERN_C PN_RESULT STDAPIVCALLTYPE
#endif
#ifndef STDAPIV_
#define STDAPIV_(type) EXTERN_C type STDAPIVCALLTYPE
#endif
/*
* Standard Interface Method defines:
*
* NOTE: the 'V' versions allow Variable Argument lists.
*
* STDMETHODIMP
* STDMETHODIMP_(type)
* STDMETHODIMPV
* STDMETHODIMPV_(type)
*/
#ifndef STDMETHODIMP
#define STDMETHODIMP PN_RESULT STDMETHODCALLTYPE
#endif
#ifndef STDMETHODIMP_
#define STDMETHODIMP_(type) type STDMETHODCALLTYPE
#endif
#ifndef STDMETHODIMPV
#define STDMETHODIMPV PN_RESULT STDMETHODVCALLTYPE
#endif
#ifndef STDMETHODIMPV_
#define STDMETHODIMPV_(type) type STDMETHODVCALLTYPE
#endif
/*
*
* Interface Declaration
*
* These are macros for declaring interfaces. They exist so that
* a single definition of the interface is simulataneously a proper
* declaration of the interface structures (C++ abstract classes)
* for both C and C++.
*
* DECLARE_INTERFACE(iface) is used to declare an interface that does
* not derive from a base interface.
* DECLARE_INTERFACE_(iface, baseiface) is used to declare an interface
* that does derive from a base interface.
*
* By default if the source file has a .c extension the C version of
* the interface declaratations will be expanded; if it has a .cpp
* extension the C++ version will be expanded. if you want to force
* the C version expansion even though the source file has a .cpp
* extension, then define the macro "CINTERFACE".
* eg. cl -DCINTERFACE file.cpp
*
* Example Interface declaration:
*
* #undef INTERFACE
* #define INTERFACE IClassFactory
*
* DECLARE_INTERFACE_(IClassFactory, IUnknown)
* {
* // *** IUnknown methods
* STDMETHOD(QueryInterface) (THIS_
* REFIID riid,
* LPVOID FAR* ppvObj) PURE;
* STDMETHOD_(ULONG,AddRef) (THIS) PURE;
* STDMETHOD_(ULONG,Release) (THIS) PURE;
*
* // *** IClassFactory methods ***
* STDMETHOD(CreateInstance) (THIS_
* LPUNKNOWN pUnkOuter,
* REFIID riid,
* LPVOID FAR* ppvObject) PURE;
* };
*
* Example C++ expansion:
*
* struct FAR IClassFactory : public IUnknown
* {
* virtual PN_RESULT STDMETHODCALLTYPE QueryInterface(
* IID FAR& riid,
* LPVOID FAR* ppvObj) = 0;
* virtual PN_RESULT STDMETHODCALLTYPE AddRef(void) = 0;
* virtual PN_RESULT STDMETHODCALLTYPE Release(void) = 0;
* virtual PN_RESULT STDMETHODCALLTYPE CreateInstance(
* LPUNKNOWN pUnkOuter,
* IID FAR& riid,
* LPVOID FAR* ppvObject) = 0;
* };
*
* NOTE: Our documentation says '#define interface class' but we use
* 'struct' instead of 'class' to keep a lot of 'public:' lines
* out of the interfaces. The 'FAR' forces the 'this' pointers to
* be far, which is what we need.
*
* Example C expansion:
*
* typedef struct IClassFactory
* {
* const struct IClassFactoryVtbl FAR* lpVtbl;
* } IClassFactory;
*
* typedef struct IClassFactoryVtbl IClassFactoryVtbl;
*
* struct IClassFactoryVtbl
* {
* PN_RESULT (STDMETHODCALLTYPE * QueryInterface) (
* IClassFactory FAR* This,
* IID FAR* riid,
* LPVOID FAR* ppvObj) ;
* PN_RESULT (STDMETHODCALLTYPE * AddRef) (IClassFactory FAR* This) ;
* PN_RESULT (STDMETHODCALLTYPE * Release) (IClassFactory FAR* This) ;
* PN_RESULT (STDMETHODCALLTYPE * CreateInstance) (
* IClassFactory FAR* This,
* LPUNKNOWN pUnkOuter,
* IID FAR* riid,
* LPVOID FAR* ppvObject);
* PN_RESULT (STDMETHODCALLTYPE * LockServer) (
* IClassFactory FAR* This,
* BOOL fLock);
* };
*
*/
#if defined(__cplusplus) && !defined(CINTERFACE)
#define _INTERFACE struct
#define STDMETHOD(method) virtual PN_RESULT STDMETHODCALLTYPE method
#define STDMETHOD_(type,method) virtual type STDMETHODCALLTYPE method
#define PURE = 0
#define THIS_
#define THIS void
#if defined(_WINDOWS) && defined(EXPORT_CLASSES)
#define DECLARE_INTERFACE(iface) _INTERFACE PNEXPORT_CLASS iface
#define DECLARE_INTERFACE_(iface, baseiface) _INTERFACE PNEXPORT_CLASS iface : public baseiface
#else
#define DECLARE_INTERFACE(iface) _INTERFACE iface
#define DECLARE_INTERFACE_(iface, baseiface) _INTERFACE iface : public baseiface
#endif // defined(_WINDOWS) && defined(EXPORT_CLASSES)
#if !defined(BEGIN_INTERFACE)
#if defined(_MPPC_) && \
( (defined(_MSC_VER) || defined(__SC__) || defined(__MWERKS__)) && \
!defined(NO_NULL_VTABLE_ENTRY) )
#define BEGIN_INTERFACE virtual void a() {}
#define END_INTERFACE
#else
#define BEGIN_INTERFACE
#define END_INTERFACE
#endif
#endif
#else
#define _INTERFACE struct
#define STDMETHOD(method) PN_RESULT (STDMETHODCALLTYPE * method)
#define STDMETHOD_(type,method) type (STDMETHODCALLTYPE * method)
#if !defined(BEGIN_INTERFACE)
#if defined(_MPPC_)
#define BEGIN_INTERFACE void *b;
#define END_INTERFACE
#else
#define BEGIN_INTERFACE
#define END_INTERFACE
#endif
#endif
#define PURE
#define THIS_ INTERFACE FAR* This,
#define THIS INTERFACE FAR* This
#ifdef CONST_VTABLE
#undef CONST_VTBL
#define CONST_VTBL const
#define DECLARE_INTERFACE(iface) typedef _INTERFACE iface { \
const struct iface##Vtbl FAR* lpVtbl; \
} iface; \
typedef const struct iface##Vtbl iface##Vtbl; \
const struct iface##Vtbl
#else
#undef CONST_VTBL
#define CONST_VTBL
#define DECLARE_INTERFACE(iface) typedef _INTERFACE iface { \
struct iface##Vtbl FAR* lpVtbl; \
} iface; \
typedef struct iface##Vtbl iface##Vtbl; \
struct iface##Vtbl
#endif
#define DECLARE_INTERFACE_(iface, baseiface) DECLARE_INTERFACE(iface)
#endif
/*
* COMMON TYPES
*/
#ifndef GUID_DEFINED
#define GUID_DEFINED
typedef struct _GUID
{
ULONG32 Data1;
UINT16 Data2;
UINT16 Data3;
UCHAR Data4[ 8 ];
} GUID;
#endif
#if !defined( __IID_DEFINED__ )
#define __IID_DEFINED__
typedef GUID IID;
#define IID_NULL GUID_NULL
typedef GUID CLSID;
#define CLSID_NULL GUID_NULL
#if defined(__cplusplus)
#ifndef _REFGUID_DEFINED
#define _REFGUID_DEFINED
#define REFGUID const GUID &
#endif
#ifndef _REFIID_DEFINED
#define _REFIID_DEFINED
#define REFIID const IID &
#endif
#ifndef _REFCLSID_DEFINED
#define _REFCLSID_DEFINED
#define REFCLSID const CLSID &
#endif
#else
#ifndef _REFGUID_DEFINED
#define _REFGUID_DEFINED
#define REFGUID const GUID * const
#endif
#ifndef _REFIID_DEFINED
#define _REFIID_DEFINED
#define REFIID const IID * const
#endif
#ifndef _REFCLSID_DEFINED
#define _REFCLSID_DEFINED
#define REFCLSID const CLSID * const
#endif
#endif
#endif
/*
*
* macros to define byte pattern for a GUID.
* Example: DEFINE_GUID(GUID_XXX, a, b, c, ...);
*
* Each dll/exe must initialize the GUIDs once. This is done in one of
* two ways. If you are not using precompiled headers for the file(s) which
* initializes the GUIDs, define INITGUID before including objbase.h. This
* is how OLE builds the initialized versions of the GUIDs which are included
* in ole2.lib. The GUIDs in ole2.lib are all defined in the same text
* segment GUID_TEXT.
*
* The alternative (which some versions of the compiler don't handle properly;
* they wind up with the initialized GUIDs in a data, not a text segment),
* is to use a precompiled version of objbase.h and then include initguid.h
* after objbase.h followed by one or more of the guid defintion files.
*
*/
#if !defined (INITGUID) || (defined (_STATICALLY_LINKED) && !defined(NCIHACK))
#define DEFINE_GUID(name, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8) \
EXTERN_C const GUID FAR name
#else
#define DEFINE_GUID(name, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8) \
EXTERN_C const GUID name \
= { l, w1, w2, { b1, b2, b3, b4, b5, b6, b7, b8 } }
#endif
#ifndef _VXWORKS
#include <memory.h> /* for memcmp */
#endif
#ifdef __cplusplus
inline BOOL IsEqualGUID(REFGUID rguid1, REFGUID rguid2)
{
return !memcmp(&rguid1, &rguid2, sizeof(GUID));
}
inline void SetGUID(GUID& rguid1, REFGUID rguid2)
{
memcpy(&rguid1, &rguid2, sizeof(GUID));
}
#else
#define IsEqualGUID(rguid1, rguid2) (!memcmp(rguid1, rguid2, sizeof(GUID)))
#define SetGUID(rguid1, rguid2) (memcpy(rguid1, rguid2, sizeof(GUID)))
#endif
#define IsEqualIID(riid1, riid2) IsEqualGUID(riid1, riid2)
#define IsEqualCLSID(rclsid1, rclsid2) IsEqualGUID(rclsid1, rclsid2)
#define SetIID(riid1, riid2) SetGUID(riid1, riid2)
#define SetCLSID(rclsid1, rclsid2) SetGUID(rclsid1, rclsid2)
#ifdef __cplusplus
/*
* Because GUID is defined elsewhere in WIN32 land, the operator == and !=
* are moved outside the class to global scope.
*/
inline BOOL operator==(const GUID& guidOne, const GUID& guidOther)
{
return !memcmp(&guidOne,&guidOther,sizeof(GUID));
}
inline BOOL operator!=(const GUID& guidOne, const GUID& guidOther)
{
return !(guidOne == guidOther);
}
#endif
/****************************************************************************
*
* Interface:
*
* IUnknown
*
* Purpose:
*
* Base class of all interfaces. Defines life time management and
* support for dynamic cast.
*
* IID_IUnknown:
*
* {00000000-0000-0000-C000000000000046}
*
*/
DEFINE_GUID(IID_IUnknown, 0x00000000, 0x0000, 0x0000, 0xC0, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x46);
#undef INTERFACE
#define INTERFACE IUnknown
DECLARE_INTERFACE(IUnknown)
{
STDMETHOD(QueryInterface) (THIS_
REFIID riid,
void** ppvObj) PURE;
STDMETHOD_(ULONG,AddRef) (THIS) PURE;
STDMETHOD_(ULONG,Release) (THIS) PURE;
};
/****************************************************************************
*
* Interface:
*
* IMalloc
*
* Purpose:
*
* Basic memory management interface.
*
* IID_IMalloc:
*
* {00000002-0000-0000-C000000000000046}
*
*/
DEFINE_GUID(IID_IMalloc, 00000002, 0x0000, 0x0000, 0xC0, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x46);
#undef INTERFACE
#define INTERFACE IMalloc
DECLARE_INTERFACE_(IMalloc, IUnknown)
{
/*
* IUnknown methods
*/
STDMETHOD(QueryInterface) (THIS_
REFIID riid,
void** ppvObj) PURE;
STDMETHOD_(ULONG,AddRef) (THIS) PURE;
STDMETHOD_(ULONG,Release) (THIS) PURE;
/*
* IMalloc methods
*/
STDMETHOD_(void*,Alloc) (THIS_
UINT32 /*IN*/ count) PURE;
STDMETHOD_(void*,Realloc) (THIS_
void* /*IN*/ pMem,
UINT32 /*IN*/ count) PURE;
STDMETHOD_(void,Free) (THIS_
void* /*IN*/ pMem) PURE;
STDMETHOD_(UINT32,GetSize) (THIS_
void* /*IN*/ pMem) PURE;
STDMETHOD_(BOOL,DidAlloc) (THIS_
void* /*IN*/ pMem) PURE;
STDMETHOD_(void,HeapMinimize) (THIS) PURE;
};
/*
*
* Synchronization: NOTE: These should be made thread safe or use built
* in synchronization support in an OS that supports it.
*
*/
#define InterlockedIncrement(plong) (++(*(plong)))
#define InterlockedDecrement(plong) (--(*(plong)))
#else /* else case of !defined( _OBJBASE_H_ ) && !defined( _COMPOBJ_H_ ) */
/* Even in windows we want these GUID's defined... */
#if !(defined(INITGUID) && defined(USE_IUNKNOWN_AND_IMALLOC_FROM_UUID_LIB))
DEFINE_GUID(IID_IUnknown, 0x00000000, 0x0000, 0x0000, 0xC0, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x46);
DEFINE_GUID(IID_IMalloc, 00000002, 0x0000, 0x0000, 0xC0, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x46);
#endif
#include <memory.h> /* for memcmp */
#ifdef __cplusplus
inline void SetGUID(REFGUID rguid1, REFGUID rguid2)
{
memcpy((void*)&rguid1, (void*)&rguid2, sizeof(GUID));
}
#else
#define SetGUID(rguid1, rguid2) (memcpy((void*)rguid1, (void*)rguid2, sizeof(GUID)))
#endif
#define SetIID(riid1, riid2) SetGUID(riid1, riid2)
#define SetCLSID(rclsid1, rclsid2) SetGUID(rclsid1, rclsid2)
#endif /* !defined( _OBJBASE_H_ ) && !defined( _COMPOBJ_H_ )*/
#ifdef IsEqualIID
#undef IsEqualIID
#endif
#ifdef IsEqualCLSID
#undef IsEqualCLSID
#endif
#define IsEqualIID(riid1, riid2) RNIsEqualGUID(riid1, riid2)
#define IsEqualCLSID(rclsid1, rclsid2) RNIsEqualGUID(rclsid1, rclsid2)
#ifdef __cplusplus
inline BOOL RNIsEqualGUID(REFGUID rguid1, REFGUID rguid2)
{
return (((UINT32*) &rguid1)[0] == ((UINT32*) &rguid2)[0] &&
((UINT32*) &rguid1)[1] == ((UINT32*) &rguid2)[1] &&
((UINT32*) &rguid1)[2] == ((UINT32*) &rguid2)[2] &&
((UINT32*) &rguid1)[3] == ((UINT32*) &rguid2)[3]);
}
#else
#define RNIsEqualGUID(rguid1, rguid2) \
(((UINT32*) &rguid1)[0] == ((UINT32*) &rguid2)[0] && \
((UINT32*) &rguid1)[1] == ((UINT32*) &rguid2)[1] && \
((UINT32*) &rguid1)[2] == ((UINT32*) &rguid2)[2] && \
((UINT32*) &rguid1)[3] == ((UINT32*) &rguid2)[3]);
#endif
/****************************************************************************
*
* Putting the following macro in the definition of your class will overload
* new and delete for that object. New will then take an IMalloc* from
* which to allocate memory from and store it in the begining of the
* memory which it will return. Delete will grab this IMalloc* from
* the beginning of the mem and use this pointer to deallocate the mem.
*
* Example useage:
* class A
* {
* public:
* A(int);
* ~A();
*
* IMALLOC_MEM
* };
*
* IMalloc* pMalloc;
* m_pContext->QueryInterface(IID_IMalloc, (void**)&pMalloc);
* A* p = new(pMalloc) A(0);
* pMalloc->Release();
* delete p;
*/
#define IMALLOC_MEM\
void* operator new(size_t size, IMalloc* pMalloc)\
{\
void* pMem = pMalloc->Alloc(size + sizeof(IMalloc*));\
*(IMalloc**)pMem = pMalloc;\
pMalloc->AddRef();\
return ((unsigned char*)pMem + sizeof(IMalloc*));\
}\
\
void operator delete(void* pMem)\
{\
pMem = (unsigned char*)pMem - sizeof(IMalloc*);\
IMalloc* pMalloc = *(IMalloc**)pMem;\
pMalloc->Free(pMem);\
pMalloc->Release();\
}\
#endif /* _PNCOM_H_ */
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