RunTimeFaustLibraryLoader.hxx

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#ifndef RunTimeFaustLibraryLoader_hxx
#define RunTimeFaustLibraryLoader_hxx

#ifdef WIN32
#include <windows.h>
#undef GetClassName
#else
#include <dlfcn.h>
#endif
#include <dirent.h>
#include "RunTimeLibraryLoader.hxx"

#include "LadspaWrapperCreator.hxx"
#include <ladspa.h>


class RunTimeFaustLibraryLoader : public RunTimeLibraryLoader
{

public:
        virtual void Load() const
        {
                std::string examplesDir = CompletePathFor("examples/ladspadir");
                LoadLibrariesFromPath(examplesDir);
                //std::cout<<"[FAUST-LADSPA Plugin] \tload of RunTimeFaustLibraryLoader"<<std::endl;
                RunTimeLibraryLoader::Load(); // needed??
        }
        void LoadPlugin(const std::string & pluginFullPath) const
        {
                LoadLibrariesFromPath(pluginFullPath);
        }

        // overload as workaround of Load() overload and path issues
        virtual const std::list<std::string> GetUsedLibraries()
        {
                const std::list<std::string> loadedLibraries=LoadedLibraries();
                LoadedLibraries().clear();
                return loadedLibraries;
        }
protected:

        virtual const bool needReleaseHandlerOnReload() const {return false; }
        void SetupLibrary(void* handle, const std::string & pluginFullFilename) const
        {
                LADSPA_Descriptor_Function descriptorTable = 0;
                descriptorTable = (LADSPA_Descriptor_Function)dlsym(handle, "ladspa_descriptor");
                if (!descriptorTable)
                {
//                      std::cout << "[FAUST-LADSPA Plugin] Warning: trying to open non ladspa plugin: " << pluginFullFilename << std::endl;
                        return;
                }
                
                LoadedLibraries().push_back(pluginFullFilename);
                CLAM::ProcessingFactory& factory = CLAM::ProcessingFactory::GetInstance();
                for (unsigned long i=0; descriptorTable(i); i++)
                {
                        LADSPA_Descriptor* descriptor = (LADSPA_Descriptor*)descriptorTable(i);
                        std::ostringstream oss;
                        oss << descriptor->Label << i;
                        factory.AddCreatorWarningRepetitions(oss.str(), 
                                        new CLAM::LadspaWrapperCreator(pluginFullFilename, 
                                                i, 
                                                oss.str()));
                        factory.AddAttribute(oss.str(), "category", "FAUST");
                        factory.AddAttribute(oss.str(), "description", descriptor->Name);
                        factory.AddAttribute(oss.str(), "library", pluginFullFilename);

                        std::string pluginName=descriptor->Label;
                        const std::string diagramMainSufix=".dsp-svg/process.svg";
                        std::string svgFileDir = CompletePathFor( "examples/" + pluginName + diagramMainSufix);
                        if (svgFileDir != "")
                        {
                                factory.AddAttribute(oss.str(), "faust_diagram", svgFileDir);
                                //std::cout << "[FAUST-LADSPA Plugin] Using diagram: " << svgFileDir << std::endl;
                        }
                        if (!factory.AttributeExists(oss.str(), "embedded_svg"))
                                factory.AddAttribute(oss.str(), "embedded_svg", ":icons/images/faustlogo.svg");
                        if (!factory.AttributeExists(oss.str(), "icon"))
                                factory.AddAttribute(oss.str(), "icon", "faustlogo.svg");
                        std::string sourcePath=CompletePathFor( "examples/"+pluginName+".dsp");
                        if (sourcePath != "")
                                factory.AddAttribute(oss.str(), "faust_source_file", sourcePath);
                }
                if (ReleaseLibraryHandler(handle, pluginFullFilename))
                {
                        std::cout<<"[FAUST-LADSPA] error unloading library handle of: " << pluginFullFilename<<std::endl;
                        std::cout<<LibraryLoadError()<<std::endl;
                }
        }

        const char ** standardPaths() const
        { 
                static const char * result[] = 
                {
/*                      "/usr/share/doc/faust",
                        "/usr/local/share/doc/faust",*/
                        0
                };
                return result;
        }

        const char * homePath() const { return  "/.faust"; }
        const char * pathEnvironmentVar() const { return  "CLAM_FAUST_PATH"; }
        const char * libraryType() const { return  "LADSPA"; }
private:
        static std::list<std::string> & LoadedLibraries()
        {
                static std::list<std::string> sLoadedLibraries;
                return sLoadedLibraries;
        }
};

#endif // RunTimeFaustLibraryLoader_hxx

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