view libs/aubioFullOSXUni/include/aubio/hist.h @ 1:ba2a17cf81bf

first working version of audio file loder. Loads bach clip from the apps->audio-file-loader->bin->data->sounds foler. Three classes: SoundFileLoader does the loading and parsing of thefile with libSndFile. audio samples are kept in AudioFile and analysis of features are kept in AudioAnalysis, at this stage just chromagramm and basic energy

/*
	 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
 *
 * Histogram function
 *
 * Big hacks to implement an histogram
 */

#ifndef HIST_H
#define HIST_H

#ifdef __cplusplus
extern "C" {
#endif

/** histogram object */
typedef struct _aubio_hist_t aubio_hist_t;

/** histogram creation 
 * \param flow minimum input
 * \param fhig maximum input
 * \param nelems number of histogram columns
 * \param channels number of channels 
 */
aubio_hist_t * new_aubio_hist(smpl_t flow, smpl_t fhig, ba_uint_t nelems, ba_uint_t channels);
/** histogram deletion */
void del_aubio_hist(aubio_hist_t *s);
/** compute the histogram */
void aubio_hist_do(aubio_hist_t *s, fvec_t * input);
/** compute the histogram ignoring null elements */
void aubio_hist_do_notnull(aubio_hist_t *s, fvec_t * input);
/** compute the mean of the histogram */
smpl_t aubio_hist_mean(aubio_hist_t *s); 
/** weight the histogram */
void aubio_hist_weigth(aubio_hist_t *s); 
/** compute dynamic histogram for non-null elements */
void aubio_hist_dyn_notnull (aubio_hist_t *s, fvec_t *input);

#ifdef __cplusplus
}
#endif

#endif