Aegisub/core/avisynth_wrap.cpp

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// 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
//
// Website: http://aegisub.cellosoft.com
// Contact: mailto:zeratul@cellosoft.com
//
////////////
// Includes
#include "avisynth_wrap.h"
#include "options.h"
///////////////////////////////
// Static field initialization
int AviSynthWrapper::avs_refcount = 0;
HINSTANCE AviSynthWrapper::hLib = NULL;
IScriptEnvironment *AviSynthWrapper::env = NULL;
wxMutex AviSynthWrapper::AviSynthMutex;
////////////////////////
// AviSynth constructor
AviSynthWrapper::AviSynthWrapper() {
if (!avs_refcount) {
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hLib=LoadLibrary(_T("avisynth.dll"));
if (hLib == NULL)
throw _T("Could not load avisynth.dll");
FUNC *CreateScriptEnv = (FUNC*)GetProcAddress(hLib, "CreateScriptEnvironment");
if (CreateScriptEnv == NULL)
throw _T("Failed to get function from avisynth.dll");
env = CreateScriptEnv(AVISYNTH_INTERFACE_VERSION);
if (env == NULL)
throw _T("Failed to create a new avisynth script environment. Avisynth is too old?");
// Check for a new enough avisynth version by looking for the most obscure function used
if (!env->FunctionExists("InternalCache"))
throw _T("Installed version of avisynth is too old");
// Set memory limit
int memoryMax = Options.AsInt(_T("Avisynth MemoryMax"));
if (memoryMax != 0)
env->SetMemoryMax(memoryMax);
avs_refcount++;
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}
}
///////////////////////
// AviSynth destructor
AviSynthWrapper::~AviSynthWrapper() {
if (!--avs_refcount) {
delete env;
FreeLibrary(hLib);
}
}