MixtureServer.h

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/*
        This file is part of ALIZE which is an open-source tool for 
        speaker recognition.

    ALIZE is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as 
    published by the Free Software Foundation, either version 3 of 
    the License, or any later version.

    ALIZE 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 Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public 
    License along with ALIZE.
    If not, see <http://www.gnu.org/licenses/>.
        
        ALIZE is a development project initiated by the ELISA consortium
        [alize.univ-avignon.fr/] and funded by the French Research 
        Ministry in the framework of the TECHNOLANGUE program 
        [www.technolangue.net]

        The ALIZE project team wants to highlight the limits of voice
        authentication in a forensic context.
        The "Person  Authentification by Voice: A Need of Caution" paper 
        proposes a good overview of this point (cf. "Person  
        Authentification by Voice: A Need of Caution", Bonastre J.F., 
        Bimbot F., Boe L.J., Campbell J.P., Douglas D.A., Magrin-
        chagnolleau I., Eurospeech 2003, Genova].
        The conclusion of the paper of the paper is proposed bellow:
        [Currently, it is not possible to completely determine whether the 
        similarity between two recordings is due to the speaker or to other 
        factors, especially when: (a) the speaker does not cooperate, (b) there 
        is no control over recording equipment, (c) recording conditions are not 
        known, (d) one does not know whether the voice was disguised and, to a 
        lesser extent, (e) the linguistic content of the message is not 
        controlled. Caution and judgment must be exercised when applying speaker 
        recognition techniques, whether human or automatic, to account for these 
        uncontrolled factors. Under more constrained or calibrated situations, 
        or as an aid for investigative purposes, judicious application of these 
        techniques may be suitable, provided they are not considered as infallible.
        At the present time, there is no scientific process that enables one to 
        uniquely characterize a person=92s voice or to identify with absolute 
        certainty an individual from his or her voice.]
        Contact Jean-Francois Bonastre for more information about the licence or
        the use of ALIZE

        Copyright (C) 2003-2010
        Laboratoire d'informatique d'Avignon [lia.univ-avignon.fr]
        ALIZE admin [alize@univ-avignon.fr]
        Jean-Francois Bonastre [jean-francois.bonastre@univ-avignon.fr]
*/

#if !defined(ALIZE_MixtureServer_h)
#define ALIZE_MixtureServer_h

#if defined(_WIN32)
#if defined(ALIZE_EXPORTS)
#define ALIZE_API __declspec(dllexport)
#else
#define ALIZE_API __declspec(dllimport)
#endif
#else
#define ALIZE_API
#endif

#include "Object.h"
#include "MixtureDict.h"
#include "MixtureGD.h"
#include "MixtureGF.h"
#include "DistribGD.h"
#include "DistribGF.h"
#include "DistribRefVector.h"
#include "Config.h"

namespace alize
{
  class XLine;


  class ALIZE_API MixtureServer : public Object
  {
    friend class TestMixtureServer;

  public :

    explicit MixtureServer(const Config& config);

    explicit MixtureServer(const FileName& f, const Config& c);

    virtual ~MixtureServer();

    void reset();

    Distrib& createDistrib();

    Distrib& createDistrib(const DistribType type, unsigned long vectSize);

    Distrib& duplicateDistrib(const Distrib& d);

    Mixture& createMixture();

    Mixture& createMixture(unsigned long dc);

    Mixture& createMixture(unsigned long dc, DistribType);

    Mixture& duplicateMixture(const Mixture& mix,
                              DuplDistrib = DUPL_DISTRIB);

    Distrib& getDistrib(unsigned long index) const;

    Mixture& getMixture(unsigned long index) const;

    void setDistribToMixture(Mixture& mix, Distrib& distr, weight_t w,
                            unsigned long index);

    void addDistribToMixture(Mixture& mix, Distrib& distr, weight_t w = 0.0);

    void deleteMixtures(unsigned long f, unsigned long l);

    void deleteMixture(const Mixture& m);

    void deleteUnusedDistribs();

    //-------------------------------------------------------------------
    
    DistribGD& createDistribGD();
    
    DistribGF& createDistribGF();

    DistribGD& duplicateDistrib(const DistribGD& d);

    DistribGF& duplicateDistrib(const DistribGF& d);

    MixtureGD& createMixtureGD();

    MixtureGF& createMixtureGF();

    MixtureGD& createMixtureGD(unsigned long dc);

    MixtureGF& createMixtureGF(unsigned long dc);

    MixtureGD& duplicateMixture(const MixtureGD& mix,
                                DuplDistrib = DUPL_DISTRIB);

    MixtureGF& duplicateMixture(const MixtureGF& mix,
                  DuplDistrib = DUPL_DISTRIB);

    MixtureGD& duplicateMixtureGD(const Mixture& mix,
                   DuplDistrib = DUPL_DISTRIB);

    MixtureGF& duplicateMixtureGF(const Mixture& mix,
                   DuplDistrib = DUPL_DISTRIB);

    DistribGD& getDistribGD(unsigned long index) const;

    DistribGF& getDistribGF(unsigned long index) const;

    MixtureGD& getMixtureGD(unsigned long index) const;

    MixtureGF& getMixtureGF(unsigned long index) const;

    //-------------------------------------------------------------------

    Mixture& loadMixture(const FileName& f);

    MixtureGD& loadMixtureGD(const FileName& f);

    MixtureGF& loadMixtureGF(const FileName& f);

    void loadMixture(Mixture& m, const FileName& f);

    unsigned long loadMixture(const XLine& l);

    //-------------------------------------------------------------------
    
    unsigned long getDistribCount() const;
    
    unsigned long getVectSize() const;

    unsigned long getMixtureCount() const;

    long getMixtureIndex(const String& id) const;

    void setMixtureId(Mixture& mix, const String& id);

    //-------------------------------------------------------------------

    const String& getServerName() const;
    void setServerName(const String&);

    void load(const FileName& f);

    void save(const FileName& f) const;

    virtual String getClassName() const;
    virtual String toString() const;


  private :

    const Config&     _config;
    String        _serverName;
    DistribRefVector    _distribDict;
    MixtureDict       _mixtureDict;
    unsigned long     _lastMixtureId;
    mutable unsigned long _vectSize;
    mutable bool      _vectSizeDefined;

    void addDistribToDict(Distrib&);
    void addMixtureToDict(Mixture&);
    String newId();
    Mixture& loadMixture(const FileName& f, DistribType);
    void autoSetMixtureId(Mixture& m, String id);


    MixtureServer(const MixtureServer& m); 
    const MixtureServer& operator=(
            const MixtureServer&); 
    bool operator==(const MixtureServer&); 
    bool operator!=(const MixtureServer&); 
  };

} // end namespace alize

#endif // !defined(ALIZE_MixtureServer_h)