loader/com.h

   1 #ifndef AVIFILE_COM_H
   2 #define AVIFILE_COM_H
   3
   4 #include "config.h"
   5
   6 #ifdef HAVE_STDINT_H
   7 #include <stdint.h>
   8 #else
   9 #include <inttypes.h>
  10 #endif
  11
  12 /**
  13  * Internal functions and structures for COM emulation code.
  14  */
  15
  16 #if !defined(WIN32) || defined(__CYGWIN__) || defined(__MINGW32__)
  17
  18 #ifdef __cplusplus
  19 extern "C" {
  20 #endif
  21
  22 void* CoTaskMemAlloc(unsigned long cb);
  23 void CoTaskMemFree(void* cb);
  24
  25 #ifndef GUID_TYPE
  26 #define GUID_TYPE
  27 typedef struct
  28 {
  29     uint32_t f1;
  30     uint16_t f2;
  31     uint16_t f3;
  32     uint8_t  f4[8];
  33 } GUID;
  34 #endif
  35
  36 extern const GUID IID_IUnknown;
  37 extern const GUID IID_IClassFactory;
  38
  39 typedef long (*GETCLASSOBJECT) (GUID* clsid, const GUID* iid, void** ppv);
  40 int RegisterComClass(const GUID* clsid, GETCLASSOBJECT gcs);
  41 int UnregisterComClass(const GUID* clsid, GETCLASSOBJECT gcs);
  42
  43 #ifndef STDCALL
  44 #define STDCALL __attribute__((__stdcall__))
  45 #endif
  46
  47 struct IUnknown;
  48 struct IClassFactory;
  49 struct IUnknown_vt
  50 {
  51     long STDCALL (*QueryInterface)(struct IUnknown* _this, const GUID* iid, void** ppv);
  52     long STDCALL (*AddRef)(struct IUnknown* _this) ;
  53     long STDCALL (*Release)(struct IUnknown* _this) ;
  54 } ;
  55
  56 typedef struct IUnknown
  57 {
  58     struct IUnknown_vt* vt;
  59 } IUnknown;
  60
  61 struct IClassFactory_vt
  62 {
  63     long STDCALL (*QueryInterface)(struct IUnknown* _this, const GUID* iid, void** ppv);
  64     long STDCALL (*AddRef)(struct IUnknown* _this) ;
  65     long STDCALL (*Release)(struct IUnknown* _this) ;
  66     long STDCALL (*CreateInstance)(struct IClassFactory* _this, struct IUnknown* pUnkOuter, const GUID* riid, void** ppvObject);
  67 };
  68
  69 struct IClassFactory
  70 {
  71     struct IClassFactory_vt* vt;
  72 };
  73
  74 long CoCreateInstance(GUID* rclsid, struct IUnknown* pUnkOuter,
  75                       long dwClsContext, const GUID* riid, void** ppv);
  76
  77 #ifdef __cplusplus
  78 };
  79 #endif /* __cplusplus */
  80
  81 #endif /* WIN32 */
  82
  83 #endif /* AVIFILE_COM_H */