ad443dd118
Starting with AVISYNTH_INTERFACE_VERSION=5, this is how script environments should be deleted. The previous code was causing crashes when unloading AviSynth in certain scenarios, such as when failing to open a file due to an incorrect path.
126 lines
3.6 KiB
C++
126 lines
3.6 KiB
C++
// Copyright (c) 2005, Rodrigo Braz Monteiro
|
|
// All rights reserved.
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions are met:
|
|
//
|
|
// * Redistributions of source code must retain the above copyright notice,
|
|
// this list of conditions and the following disclaimer.
|
|
// * Redistributions in binary form must reproduce the above copyright notice,
|
|
// this list of conditions and the following disclaimer in the documentation
|
|
// and/or other materials provided with the distribution.
|
|
// * Neither the name of the Aegisub Group nor the names of its contributors
|
|
// may be used to endorse or promote products derived from this software
|
|
// without specific prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
// POSSIBILITY OF SUCH DAMAGE.
|
|
//
|
|
// Aegisub Project http://www.aegisub.org/
|
|
|
|
/// @file avisynth_wrap.cpp
|
|
/// @brief Wrapper-layer for Avisynth
|
|
/// @ingroup video_input audio_input
|
|
///
|
|
|
|
#ifdef WITH_AVISYNTH
|
|
#include "avisynth_wrap.h"
|
|
|
|
#include "avisynth.h"
|
|
#include "options.h"
|
|
|
|
#include <mutex>
|
|
|
|
#ifndef _WIN32
|
|
#include <dlfcn.h>
|
|
#endif
|
|
|
|
#ifdef _WIN32
|
|
#define AVISYNTH_SO "avisynth.dll"
|
|
#else
|
|
#define AVISYNTH_SO "libavisynth.so"
|
|
#endif
|
|
|
|
// Allocate storage for and initialise static members
|
|
namespace {
|
|
int avs_refcount = 0;
|
|
#ifdef _WIN32
|
|
HINSTANCE hLib = nullptr;
|
|
#else
|
|
void* hLib = nullptr;
|
|
#endif
|
|
IScriptEnvironment *env = nullptr;
|
|
std::mutex AviSynthMutex;
|
|
}
|
|
// This needs to be visible so Avisynth sees it
|
|
const AVS_Linkage *AVS_linkage = nullptr;
|
|
|
|
typedef IScriptEnvironment* __stdcall FUNC(int);
|
|
|
|
AviSynthWrapper::AviSynthWrapper() {
|
|
if (!avs_refcount++) {
|
|
#ifdef _WIN32
|
|
#define CONCATENATE(x, y) x ## y
|
|
#define _Lstr(x) CONCATENATE(L, x)
|
|
hLib = LoadLibraryW(_Lstr(AVISYNTH_SO));
|
|
#undef _Lstr
|
|
#undef CONCATENATE
|
|
#else
|
|
hLib = dlopen(AVISYNTH_SO, RTLD_LAZY | RTLD_LOCAL | RTLD_DEEPBIND);
|
|
#endif
|
|
|
|
if (!hLib)
|
|
throw AvisynthError("Could not load " AVISYNTH_SO);
|
|
|
|
#ifdef _WIN32
|
|
FUNC* CreateScriptEnv = (FUNC*)GetProcAddress(hLib, "CreateScriptEnvironment");
|
|
#else
|
|
FUNC* CreateScriptEnv = (FUNC*)dlsym(hLib, "CreateScriptEnvironment");
|
|
#endif
|
|
if (!CreateScriptEnv)
|
|
throw AvisynthError("Failed to get address of CreateScriptEnv from " AVISYNTH_SO);
|
|
|
|
env = CreateScriptEnv(AVISYNTH_INTERFACE_VERSION);
|
|
|
|
if (!env)
|
|
throw AvisynthError("Failed to create a new avisynth script environment. Avisynth is too old?");
|
|
|
|
AVS_linkage = env->GetAVSLinkage();
|
|
|
|
// Set memory limit
|
|
const int memoryMax = OPT_GET("Provider/Avisynth/Memory Max")->GetInt();
|
|
if (memoryMax)
|
|
env->SetMemoryMax(memoryMax);
|
|
}
|
|
}
|
|
|
|
AviSynthWrapper::~AviSynthWrapper() {
|
|
if (!--avs_refcount) {
|
|
env->DeleteScriptEnvironment();
|
|
#ifdef _WIN32
|
|
FreeLibrary(hLib);
|
|
#else
|
|
dlclose(hLib);
|
|
#endif
|
|
AVS_linkage = nullptr;
|
|
}
|
|
}
|
|
|
|
std::mutex& AviSynthWrapper::GetMutex() const {
|
|
return AviSynthMutex;
|
|
}
|
|
|
|
IScriptEnvironment *AviSynthWrapper::GetEnv() const {
|
|
return env;
|
|
}
|
|
|
|
#endif
|