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schoenebeck |
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/*************************************************************************** |
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* * |
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* Copyright (C) 2007 Christian Schoenebeck * |
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* * |
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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., 59 Temple Place, Suite 330, Boston, * |
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* MA 02111-1307 USA * |
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***************************************************************************/ |
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#include "InstrumentEditorFactory.h" |
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#include <dlfcn.h> |
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#include <errno.h> |
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#include <string.h> |
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#include <dirent.h> |
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#ifndef CONFIG_PLUGIN_DIR |
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# error "Configuration macro CONFIG_PLUGIN_DIR not defined!" |
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#endif // CONFIG_PLUGIN_DIR |
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namespace LinuxSampler { |
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std::map<String, InstrumentEditorFactory::InnerFactory*> InstrumentEditorFactory::InnerFactories; |
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bool InstrumentEditorFactory::bPluginsLoaded = false; |
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std::list<void*> InstrumentEditorFactory::LoadedDLLs; |
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std::vector<String> InstrumentEditorFactory::AvailableEditors() { |
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// make sure plugins were loaded already |
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LoadPlugins(); |
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// render result |
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std::vector<String> result; |
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std::map<String, InnerFactory*>::iterator iter = InnerFactories.begin(); |
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for (; iter != InnerFactories.end(); iter++) |
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result.push_back(iter->first); |
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return result; |
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} |
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std::vector<String> InstrumentEditorFactory::MatchingEditors(String sTypeName, String sTypeVersion) { |
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// make sure plugins were loaded already |
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LoadPlugins(); |
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// render result |
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std::vector<String> result; |
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std::map<String, InnerFactory*>::iterator iter = InnerFactories.begin(); |
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for (; iter != InnerFactories.end(); iter++) { |
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InstrumentEditor* pEditor = iter->second->Create(); |
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if (pEditor->IsTypeSupported(sTypeName, sTypeVersion)) |
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result.push_back(iter->first); |
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iter->second->Destroy(pEditor); |
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} |
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return result; |
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} |
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String InstrumentEditorFactory::AvailableEditorsAsString() { |
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std::vector<String> drivers = AvailableEditors(); |
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String result; |
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std::vector<String>::iterator iter = drivers.begin(); |
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for (; iter != drivers.end(); iter++) { |
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if (result != "") result += ","; |
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result += "'" + *iter + "'"; |
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} |
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return result; |
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} |
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InstrumentEditor* InstrumentEditorFactory::Create(String InstrumentEditorName) throw (Exception) { |
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if (InnerFactories.count(InstrumentEditorName)) { |
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InnerFactory* pInnerFactory = InnerFactories[InstrumentEditorName]; |
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return pInnerFactory->Create(); |
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} else throw Exception("unknown instrument editor"); |
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} |
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void InstrumentEditorFactory::Destroy(InstrumentEditor* pInstrumentEditor) throw (Exception) { |
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if (InnerFactories.count(pInstrumentEditor->Name())) { |
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InnerFactory* pInnerFactory = InnerFactories[pInstrumentEditor->Name()]; |
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return pInnerFactory->Destroy(pInstrumentEditor); |
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} else throw Exception("unknown instrument editor"); |
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} |
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void InstrumentEditorFactory::LoadPlugins() { |
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if (!bPluginsLoaded) { |
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dmsg(1,("Loading instrument editor plugins...")); |
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DIR* hDir = opendir(CONFIG_PLUGIN_DIR); |
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if (!hDir) { |
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std::cerr << "Could not open instrument editor plugins directory " |
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<< "(" << CONFIG_PLUGIN_DIR << "): " |
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<< strerror(errno) << std::endl; |
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return; |
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} |
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for (dirent* pEntry = readdir(hDir); pEntry; pEntry = readdir(hDir)) { |
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// skip entries that are not regular files |
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if (pEntry->d_type != DT_REG) continue; |
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String sPath = pEntry->d_name; |
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// skip files that are not .so files |
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if ( |
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sPath.substr(sPath.length() - 3) != ".so" && |
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sPath.find(".so.") == String::npos |
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) continue; |
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// make it a full qualified path |
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sPath = CONFIG_PLUGIN_DIR + ("/" + sPath); |
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// load the DLL (the plugins should register themselfes automatically) |
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void* pDLL = dlopen(sPath.c_str(), RTLD_NOW); |
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if (pDLL) LoadedDLLs.push_back(pDLL); |
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else { |
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std::cerr << "Failed to load instrument editor plugin: " |
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<< sPath << std::endl; |
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} |
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} |
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closedir(hDir); |
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bPluginsLoaded = true; |
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dmsg(1,("OK\n")); |
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} |
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} |
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void InstrumentEditorFactory::ClosePlugins() { |
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if (LoadedDLLs.size()) { |
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dmsg(1,("Unloading instrument editor plugins...")); |
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// free all inner factories |
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{ |
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std::map<String, InnerFactory*>::iterator iter = InnerFactories.begin(); |
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for (; iter != InnerFactories.end(); iter++) delete iter->second; |
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InnerFactories.clear(); |
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} |
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// free the DLLs |
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{ |
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std::list<void*>::iterator iter = LoadedDLLs.begin(); |
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for (; iter != LoadedDLLs.end(); iter++) dlclose(*iter); |
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LoadedDLLs.clear(); |
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dmsg(1,("OK\n")); |
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} |
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} |
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bPluginsLoaded = false; |
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} |
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} // namespace LinuxSampler |
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