/usr/include/SndObj/Interp.h is in libsndobj-dev 2.6.7+ds1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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////////////////////////////////////////////////////////////////////////
// This file is part of the SndObj library
//
// 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
//
// Copyright (c)Victor Lazzarini, 1997-2004
// See License.txt for a disclaimer of all warranties
// and licensing information
//***********************************************************//
// Interp.h : interface of the Interp Class
// (interpolation object)
//
//***********************************************************//
#ifndef _INTERP_H
#define _INTERP_H
#include "SndObj.h"
class Interp : public SndObj {
protected:
float m_initial; // initial value
float m_fin; // fin value
float m_typec; // type of curve 0 = LINEAR, EXP < 0 < INV EXP
unsigned long m_dur;
unsigned long m_count;
public:
Interp();
Interp(float initial, float fin,
float dur, float type = 0.f, int vecsize=DEF_VECSIZE, float sr=DEF_SR);
~Interp();
int Set(char* mess, float value);
void SetSr(float sr);
void Restart(){ m_count = 0; };
void SetCurve(float initial, float fin,
float m_typec = 0.f);
void SetDur(float dur){
m_dur = (unsigned long) (m_sr*dur);
m_count = 0;
}
short DoProcess();
};
#endif
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