view aubioFullOSXUni/include/aubio/scale.h @ 0:572c856e38ac

Starting up openFrameworks project for audio time warping. The ofxFileReader goes in addons of your OF folder, the libraries and source (chromogram, fftw and source code src+ timewarp) are probably best kept in the repository, then dragged into the project afresh. That way, as we update the repository, the code that the openFrameworks project looks for will be updated.

/*
	 Copyright (C) 2003 Paul Brossier

	 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

/** \file

 Vector scaling function 
 
 This object, inspired from the scale object in FTS, the jMax engine, scales
 the values of a vector according to an affine function defined as follow:
 
 \f$ y = (x - ilow)*(ohig-olow)/(ihig-ilow) + olow \f$ 
 
*/
#ifndef SCALE_H
#define SCALE_H

#ifdef __cplusplus
extern "C" {
#endif

/** scale object */
typedef struct _aubio_scale_t aubio_scale_t;

/** create a scale object
 
  \param flow lower value of output function
  \param fhig higher value of output function
  \param ilow lower value of input function
  \param ihig higher value of output function

*/
aubio_scale_t * new_aubio_scale(smpl_t flow, smpl_t fhig, smpl_t ilow, smpl_t ihig	);
/** delete a scale object 

  \param s scale object as returned by new_aubio_scale

*/
void del_aubio_scale(aubio_scale_t *s);
/** scale input vector

  \param s scale object as returned by new_aubio_scale
  \param input vector to scale

*/
void aubio_scale_do(aubio_scale_t *s, fvec_t * input);
/** modify scale parameters after object creation

  \param s scale object as returned by new_aubio_scale
  \param olow lower value of output function
  \param ohig higher value of output function
  \param ilow lower value of input function
  \param ihig higher value of output function

*/
void aubio_scale_set (aubio_scale_t *s, smpl_t ilow, smpl_t ihig, smpl_t olow, smpl_t ohig);

#ifdef __cplusplus
}
#endif 

#endif