mirror of https://github.com/mpv-player/mpv
51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
#ifndef DS_IUNK_H
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#define DS_IUNK_H
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#include "guids.h"
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#include <stdlib.h>
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#define INHERIT_IUNKNOWN() \
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long STDCALL ( *QueryInterface )(IUnknown * This, GUID* riid, void **ppvObject); \
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long STDCALL ( *AddRef )(IUnknown * This); \
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long STDCALL ( *Release )(IUnknown * This);
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#define DECLARE_IUNKNOWN() \
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int refcount;
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#define IMPLEMENT_IUNKNOWN(CLASSNAME) \
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static long STDCALL CLASSNAME ## _QueryInterface(IUnknown * This, \
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GUID* riid, void **ppvObject) \
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{ \
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CLASSNAME * me = (CLASSNAME *)This; \
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GUID* r; unsigned int i = 0; \
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Debug printf(#CLASSNAME "_QueryInterface(%p) called\n", This);\
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if (!ppvObject) return 0x80004003; \
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for(r=me->interfaces; i<sizeof(me->interfaces)/sizeof(me->interfaces[0]); r++, i++) \
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if(!memcmp(r, riid, sizeof(*r))) \
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{ \
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me->vt->AddRef((IUnknown*)This); \
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*ppvObject=This; \
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return 0; \
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} \
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Debug printf("Query failed!\n"); \
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return E_NOINTERFACE; \
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} \
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\
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static long STDCALL CLASSNAME ## _AddRef(IUnknown * This) \
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{ \
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CLASSNAME * me=( CLASSNAME *)This; \
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Debug printf(#CLASSNAME "_AddRef(%p) called (ref:%d)\n", This, me->refcount); \
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return ++(me->refcount); \
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} \
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\
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static long STDCALL CLASSNAME ## _Release(IUnknown * This) \
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{ \
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CLASSNAME* me=( CLASSNAME *)This; \
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Debug printf(#CLASSNAME "_Release(%p) called (new ref:%d)\n", This, me->refcount - 1); \
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if(--(me->refcount) == 0) \
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CLASSNAME ## _Destroy(me); \
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return 0; \
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}
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#endif /* DS_IUNK_H */
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