forked from mia/Aegisub
136 lines
4.3 KiB
C++
136 lines
4.3 KiB
C++
// Copyright (c) 2005, Rodrigo Braz Monteiro
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of the Aegisub Group nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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// -----------------------------------------------------------------------------
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//
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// AEGISUB
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//
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// Website: http://aegisub.cellosoft.com
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// Contact: mailto:zeratul@cellosoft.com
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//
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////////////
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// Includes
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#ifdef WITH_AVISYNTH
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#include "avisynth_wrap.h"
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#include "options.h"
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#ifdef DEBUG_AVISYNTH_CODE
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#include "main.h"
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#include "wx/textfile.h"
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wxTextFile avs_trace_file;
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void DoAvsTrace(const wxString &s)
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{
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if (!avs_trace_file.IsOpened()) {
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if (!avs_trace_file.Open(AegisubApp::folderName + _T("avstrace.txt"))) {
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avs_trace_file.Create(AegisubApp::folderName + _T("avstrace.txt"));
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}
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avs_trace_file.AddLine(_T(""));
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avs_trace_file.AddLine(_T("======= NEW SESSION ======="));
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}
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avs_trace_file.AddLine(s);
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avs_trace_file.Write();
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}
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#endif
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///////////////////////////////
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// Static field initialization
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int AviSynthWrapper::avs_refcount = 0;
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HINSTANCE AviSynthWrapper::hLib = NULL;
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IScriptEnvironment *AviSynthWrapper::env = NULL;
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wxMutex AviSynthWrapper::AviSynthMutex;
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////////////////////////
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// AviSynth constructor
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AviSynthWrapper::AviSynthWrapper() {
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if (!avs_refcount) {
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AVSTRACE(_T("Avisynth not loaded, trying to load it now..."));
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hLib=LoadLibrary(_T("avisynth.dll"));
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if (hLib == NULL) {
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AVSTRACE(_T("Avisynth loading failed"));
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throw wxString(_T("Could not load avisynth.dll"));
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}
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AVSTRACE(_T("Avisynth loading successful"));
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FUNC *CreateScriptEnv = (FUNC*)GetProcAddress(hLib, "CreateScriptEnvironment");
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if (CreateScriptEnv == NULL) {
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AVSTRACE(_T("Failed to get address of CreateScriptEnv"));
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throw wxString(_T("Failed to get function from avisynth.dll"));
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}
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AVSTRACE(_T("Got address of CreateScriptEnv"));
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// Require Avisynth 2.5.6+?
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if (Options.AsBool(_T("Allow Ancient Avisynth")))
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env = CreateScriptEnv(AVISYNTH_INTERFACE_VERSION-1);
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else
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env = CreateScriptEnv(AVISYNTH_INTERFACE_VERSION);
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if (env == NULL) {
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AVSTRACE(_T("Failed to create script environment"));
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throw wxString(_T("Failed to create a new avisynth script environment. Avisynth is too old?"));
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}
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AVSTRACE(_T("Created script environment"));
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// Set memory limit
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int memoryMax = Options.AsInt(_T("Avisynth MemoryMax"));
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if (memoryMax != 0) {
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env->SetMemoryMax(memoryMax);
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AVSTRACE(_T("Set Avisynth memory limit"));
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}
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}
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avs_refcount++;
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AVSTRACE(_T("Increased reference count"));
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}
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///////////////////////
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// AviSynth destructor
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AviSynthWrapper::~AviSynthWrapper() {
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AVSTRACE(_T("Decreasing reference count"));
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if (!--avs_refcount) {
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AVSTRACE(_T("Reference count reached zero, deleting environment"));
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delete env;
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AVSTRACE(_T("Environment deleted"));
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FreeLibrary(hLib);
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AVSTRACE(_T("Free'd library, unloading complete"));
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}
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}
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///////////////////
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// Get environment
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IScriptEnvironment *AviSynthWrapper::GetEnv() {
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return env;
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}
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#endif
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