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- // VirtualDub - Video processing and capture application
- // System library component
- // Copyright (C) 1998-2007 Avery Lee, All Rights Reserved.
- //
- // Beginning with 1.6.0, the VirtualDub system library is licensed
- // differently than the remainder of VirtualDub. This particular file is
- // thus licensed as follows (the "zlib" license):
- //
- // This software is provided 'as-is', without any express or implied
- // warranty. In no event will the authors be held liable for any
- // damages arising from the use of this software.
- //
- // Permission is granted to anyone to use this software for any purpose,
- // including commercial applications, and to alter it and redistribute it
- // freely, subject to the following restrictions:
- //
- // 1. The origin of this software must not be misrepresented; you must
- // not claim that you wrote the original software. If you use this
- // software in a product, an acknowledgment in the product
- // documentation would be appreciated but is not required.
- // 2. Altered source versions must be plainly marked as such, and must
- // not be misrepresented as being the original software.
- // 3. This notice may not be removed or altered from any source
- // distribution.
-
- #ifndef f_VD2_SYSTEM_THUNK_H
- #define f_VD2_SYSTEM_THUNK_H
-
- #ifdef _MSC_VER
- #pragma once
- #endif
-
- bool VDInitThunkAllocator();
- void VDShutdownThunkAllocator();
-
- void *VDAllocateThunkMemory(size_t len);
- void VDFreeThunkMemory(void *p, size_t len);
- void VDSetThunkMemory(void *p, const void *src, size_t len);
- void VDFlushThunkMemory(void *p, size_t len);
-
- class VDFunctionThunk;
-
- VDFunctionThunk *VDCreateFunctionThunkFromMethod(void *method, void *pThis, size_t argbytes, bool stdcall_thunk);
- void VDDestroyFunctionThunk(VDFunctionThunk *pFnThunk);
-
- ///////////////////////////////////////////////////////////////////////////////
-
- template<typename T> struct VDMetaSizeofArg { enum { value = (sizeof(T) + sizeof(void *) - 1) & ~(sizeof(void *) - 1) }; };
-
- // This doesn't work for references. Sadly, these seem to get stripped during template matching.
- template<class T, class R>
- char (&VDMetaGetMethodArgBytes(R (T::*method)()))[1];
-
- template<class T, class R, class A1>
- char (&VDMetaGetMethodArgBytes(R (T::*method)(A1)))[1 + VDMetaSizeofArg<A1>::value];
-
- template<class T, class R, class A1, class A2>
- char (&VDMetaGetMethodArgBytes(R (T::*method)(A1, A2)))[1 + VDMetaSizeofArg<A1>::value + VDMetaSizeofArg<A2>::value];
-
- template<class T, class R, class A1, class A2, class A3>
- char (&VDMetaGetMethodArgBytes(R (T::*method)(A1, A2, A3)))[1 + VDMetaSizeofArg<A1>::value + VDMetaSizeofArg<A2>::value + VDMetaSizeofArg<A3>::value];
-
- template<class T, class R, class A1, class A2, class A3, class A4>
- char (&VDMetaGetMethodArgBytes(R (T::*method)(A1, A2, A3, A4)))[1 + VDMetaSizeofArg<A1>::value + VDMetaSizeofArg<A2>::value + VDMetaSizeofArg<A3>::value + VDMetaSizeofArg<A4>::value];
-
- template<class T, class R, class A1, class A2, class A3, class A4, class A5>
- char (&VDMetaGetMethodArgBytes(R (T::*method)(A1, A2, A3, A4)))[1 + VDMetaSizeofArg<A1>::value + VDMetaSizeofArg<A2>::value + VDMetaSizeofArg<A3>::value + VDMetaSizeofArg<A4>::value + VDMetaSizeofArg<A5>::value];
-
- ///////////////////////////////////////////////////////////////////////////////
-
- template<class T, class T_Method>
- VDFunctionThunk *VDCreateFunctionThunkFromMethod(T *pThis, T_Method method, bool stdcall_thunk) {
- return VDCreateFunctionThunkFromMethod(*(void **)&method, pThis, sizeof VDMetaGetMethodArgBytes(method) - 1, stdcall_thunk);
- }
-
- #endif
-