RemoveNoise.hh

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/*

    Background noise estimation and removal, header
    Copyright (C) 2000-2003 Jussi Laako

    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, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/


#include <map>

#include <Alloc.hh>
#include <Exception.hh>
#include <dsp/DSPOp.hh>


#ifndef REMOVENOISE_HH
    #define REMOVENOISE_HH

    typedef std::map<double, long> ValueMap_t;
    typedef std::map<float, long> ValueMapf_t;


    class clSortedArray : protected clDSPOp
    {
            enum eDataType
            {
                TYPE_DOUBLE,
                TYPE_FLOAT
            };
            class clXSortedArray : public clException
            {
                public:
                    clXSortedArray (const char *cpErrorMsg, 
                        int iErrorCode = 0) throw() :
                        clException(cpErrorMsg, iErrorCode)
                    { }
            };
            eDataType DataType;
            long lFrontSerial;
            long lTailSerial;
            ValueMap_t mapValues;
            ValueMapf_t mapValuesf;
        public:
            clSortedArray ();
            ~clSortedArray ();
            void Initialize (const float *, long);
            void InsertTail (float);
            void RemoveHead ();
            void GetValues (float *, long);
            long GetSize ();
            void Clear ();
    };


    class clRemoveNoise : protected clDSPOp
    {
            long lPrevSize;
            clAlloc PrevBuf;
            clSortedArray SortedArray;
            void GetPosSize (long *, long *, long, long, long);
            void GetPosSize1 (long *, long *, long, long, long, long);
            void GetPosSize2 (long *, long *, long, long, long, long);
            long GetAlphaMedian (const float *, float, long);
            long GetAlphaMedian (const double *, double, long);
        public:
            clRemoveNoise ();
            ~clRemoveNoise ();
            void TPSW (float *, float, long, long, long);
            void TPSW (double *, double, long, long, long);
            void TPSW (float *, const float *, float, long, long, long);
            void TPSW (double *, const double *, double, long, long, long);
            void OTA (float *, float, long, long);
            void OTA (double *, double, long, long);
            void OTA (float *, const float *, float, long, long);
            void OTA (double *, const double *, double, long, long);
            void Diff (float *, float, long);
            void Diff (double *, double, long);
            void Diff (float *, const float *, float, long);
            void Diff (double *, const double *, double, long);
            void InvDiff (float *, float, long);
            void InvDiff (double *, double, long);
            void InvDiff (float *, const float *, float, long);
            void InvDiff (double *, const double *, double, long);
    };
    
#endif

---