18bbb2dd01
As part of the update, it is now possible to test 32-bit GCC builds of AviSynth+ with FFmpeg by using the AVS_WIN32_GCC32 define. Due to different calling conventions between MSVC and GCC regarding 32-bit Windows, this is unfortunately necessary.
95 lines
3.5 KiB
C
95 lines
3.5 KiB
C
// Avisynth C Interface Version 0.20
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// Copyright 2003 Kevin Atkinson
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA, or visit
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// http://www.gnu.org/copyleft/gpl.html .
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//
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// As a special exception, I give you permission to link to the
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// Avisynth C interface with independent modules that communicate with
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// the Avisynth C interface solely through the interfaces defined in
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// avisynth_c.h, regardless of the license terms of these independent
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// modules, and to copy and distribute the resulting combined work
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// under terms of your choice, provided that every copy of the
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// combined work is accompanied by a complete copy of the source code
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// of the Avisynth C interface and Avisynth itself (with the version
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// used to produce the combined work), being distributed under the
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// terms of the GNU General Public License plus this exception. An
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// independent module is a module which is not derived from or based
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// on Avisynth C Interface, such as 3rd-party filters, import and
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// export plugins, or graphical user interfaces.
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#ifndef AVS_CAPI_H
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#define AVS_CAPI_H
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#ifdef __cplusplus
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# define EXTERN_C extern "C"
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#else
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# define EXTERN_C
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#endif
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#ifdef BUILDING_AVSCORE
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# if defined(GCC) && defined(X86_32)
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# define AVSC_CC
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# else // MSVC builds and 64-bit GCC
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# ifndef AVSC_USE_STDCALL
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# define AVSC_CC __cdecl
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# else
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# define AVSC_CC __stdcall
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# endif
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# endif
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#else // needed for programs that talk to AviSynth+
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# ifndef AVSC_WIN32_GCC32 // see comment below
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# ifndef AVSC_USE_STDCALL
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# define AVSC_CC __cdecl
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# else
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# define AVSC_CC __stdcall
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# endif
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# else
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# define AVSC_CC
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# endif
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#endif
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// On 64-bit Windows, there's only one calling convention,
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// so there is no difference between MSVC and GCC. On 32-bit,
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// this isn't true. The convention that GCC needs to use to
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// even build AviSynth+ as 32-bit makes anything that uses
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// it incompatible with 32-bit MSVC builds of AviSynth+.
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// The AVSC_WIN32_GCC32 define is meant to provide a user
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// switchable way to make builds of FFmpeg to test 32-bit
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// GCC builds of AviSynth+ without having to screw around
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// with alternate headers, while still default to the usual
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// situation of using 32-bit MSVC builds of AviSynth+.
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// Hopefully, this situation will eventually be resolved
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// and a broadly compatible solution will arise so the
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// same 32-bit FFmpeg build can handle either MSVC or GCC
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// builds of AviSynth+.
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#define AVSC_INLINE static __inline
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#ifdef BUILDING_AVSCORE
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# define AVSC_EXPORT __declspec(dllexport)
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# define AVSC_API(ret, name) EXTERN_C AVSC_EXPORT ret AVSC_CC name
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#else
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# define AVSC_EXPORT EXTERN_C __declspec(dllexport)
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# ifndef AVSC_NO_DECLSPEC
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# define AVSC_API(ret, name) EXTERN_C __declspec(dllimport) ret AVSC_CC name
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# else
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# define AVSC_API(ret, name) typedef ret (AVSC_CC *name##_func)
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# endif
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#endif
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#endif //AVS_CAPI_H
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