LadspaFX.h

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/*
 * Hydrogen
 * Copyright(c) 2002-2008 by Alex >Comix< Cominu [comix@users.sourceforge.net]
 * Copyright(c) 2008-2024 The hydrogen development team [hydrogen-devel@lists.sourceforge.net]
 *
 * http://www.hydrogen-music.org
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY, without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see https://www.gnu.org/licenses
 *
 */
#ifndef LADSPA_FX_H
#define LADSPA_FX_H
 
#include <core/config.h>
#if defined(H2CORE_HAVE_LADSPA) || _DOXYGEN_
 
#include <QLibrary>
 
#include <vector>
#include <list>
#include "ladspa.h"
#include <core/Object.h>
 
namespace H2Core
{
 
class LadspaFXInfo : public H2Core::Object<LadspaFXInfo>
{
        H2_OBJECT(LadspaFXInfo)
public:
        LadspaFXInfo( const QString& sName );
        ~LadspaFXInfo();
 
        QString m_sFilename;    
        QString m_sID;
        QString m_sLabel;
        QString m_sName;
        QString m_sMaker;
        QString m_sCopyright;
        unsigned m_nICPorts;    
        unsigned m_nOCPorts;    
        unsigned m_nIAPorts;    
        unsigned m_nOAPorts;    
        static bool alphabeticOrder( LadspaFXInfo* a, LadspaFXInfo* b );
};
 
 
 
class LadspaFXGroup : public H2Core::Object<LadspaFXGroup>
{
        H2_OBJECT(LadspaFXGroup)
public:
        LadspaFXGroup( const QString& sName );
        ~LadspaFXGroup();
 
        const QString& getName() const {
                return m_sName;
        }
 
        void addLadspaInfo( LadspaFXInfo *pInfo );
        std::vector<LadspaFXInfo*> getLadspaInfo() const {
                return m_ladspaList;
        }
 
        void addChild( LadspaFXGroup *pChild );
        std::vector<LadspaFXGroup*> getChildList() const {
                return m_childGroups;
        }
 
        void clear();
 
        static bool alphabeticOrder( LadspaFXGroup*, LadspaFXGroup* );
        void sort();
 
 
private:
        QString m_sName;
        std::vector<LadspaFXInfo*> m_ladspaList;
        std::vector<LadspaFXGroup*> m_childGroups;
};
 
 
 
class LadspaControlPort : public H2Core::Object<LadspaControlPort>
{
        H2_OBJECT(LadspaControlPort)
public:
        QString sName;
        bool isToggle = false;
        bool m_bIsInteger = false;
        LADSPA_Data fDefaultValue = 0.0;
        LADSPA_Data fControlValue = 0.0;
        LADSPA_Data fLowerBound = 0.0;
        LADSPA_Data fUpperBound = 0.0;
 
        LadspaControlPort() : Object( ) { }
};
 
 
 
class LadspaFX : public H2Core::Object<LadspaFX>
{
        H2_OBJECT(LadspaFX)
public:
        enum {
                MONO_FX,
                STEREO_FX,
                UNDEFINED
        };
 
        //unsigned m_nBufferSize;
 
        float* m_pBuffer_L;
        float* m_pBuffer_R;
 
        std::vector<LadspaControlPort*> inputControlPorts;
        std::vector<LadspaControlPort*> outputControlPorts;
 
        ~LadspaFX();
 
        void connectAudioPorts( float* pIn_L, float* pIn_R, float* pOut_L, float* pOut_R );
        void activate();
        void deactivate();
        void processFX( unsigned nFrames );
 
 
        const QString& getPluginLabel() const {
                return m_sLabel;
        }
 
        const QString& getPluginName() const {
                return m_sName;
        }
        void setPluginName( const QString& sName );
 
        const QString& getLibraryPath() const {
                return m_sLibraryPath;
        }
 
        bool isEnabled() const {
                return m_bEnabled;
        }
        void setEnabled( bool bEnabled );
 
        static LadspaFX* load( const QString& sLibraryPath, const QString& sPluginLabel, long nSampleRate );
 
        int getPluginType() const {
                return m_pluginType;
        }
 
        float getVolume() const {
                return m_fVolume;
        }
        void setVolume( float fVolume );
 
 
private:
        bool m_pluginType;
        bool m_bEnabled;
        bool m_bActivated;      // Guard against plugins that can't be deactivated before being activated (
        QString m_sLabel;
        QString m_sName;
        QString m_sLibraryPath;
 
        QLibrary *m_pLibrary;
 
        const LADSPA_Descriptor * m_d;
        LADSPA_Handle m_handle;
        float m_fVolume;
 
        unsigned m_nICPorts;    
        unsigned m_nOCPorts;    
        unsigned m_nIAPorts;    
        unsigned m_nOAPorts;    
 
 
        LadspaFX( const QString& sLibraryPath, const QString& sPluginLabel );
};
 
};
 
#endif
 
#endif // H2CORE_HAVE_LADSPA