andrew@0: /*
andrew@0: 	 Copyright (C) 2003 Paul Brossier
andrew@0: 
andrew@0: 	 This program is free software; you can redistribute it and/or modify
andrew@0: 	 it under the terms of the GNU General Public License as published by
andrew@0: 	 the Free Software Foundation; either version 2 of the License, or
andrew@0: 	 (at your option) any later version.
andrew@0: 
andrew@0: 	 This program is distributed in the hope that it will be useful,
andrew@0: 	 but WITHOUT ANY WARRANTY; without even the implied warranty of
andrew@0: 	 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
andrew@0: 	 GNU General Public License for more details.
andrew@0: 
andrew@0: 	 You should have received a copy of the GNU General Public License
andrew@0: 	 along with this program; if not, write to the Free Software
andrew@0: 	 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
andrew@0: 	 */
andrew@0: 
andrew@0: /** @file
andrew@0:  *
andrew@0:  * Histogram function
andrew@0:  *
andrew@0:  * Big hacks to implement an histogram
andrew@0:  */
andrew@0: 
andrew@0: #ifndef HIST_H
andrew@0: #define HIST_H
andrew@0: 
andrew@0: #ifdef __cplusplus
andrew@0: extern "C" {
andrew@0: #endif
andrew@0: 
andrew@0: /** histogram object */
andrew@0: typedef struct _aubio_hist_t aubio_hist_t;
andrew@0: 
andrew@0: /** histogram creation 
andrew@0:  * \param flow minimum input
andrew@0:  * \param fhig maximum input
andrew@0:  * \param nelems number of histogram columns
andrew@0:  * \param channels number of channels 
andrew@0:  */
andrew@0: aubio_hist_t * new_aubio_hist(smpl_t flow, smpl_t fhig, ba_uint_t nelems, ba_uint_t channels);
andrew@0: /** histogram deletion */
andrew@0: void del_aubio_hist(aubio_hist_t *s);
andrew@0: /** compute the histogram */
andrew@0: void aubio_hist_do(aubio_hist_t *s, fvec_t * input);
andrew@0: /** compute the histogram ignoring null elements */
andrew@0: void aubio_hist_do_notnull(aubio_hist_t *s, fvec_t * input);
andrew@0: /** compute the mean of the histogram */
andrew@0: smpl_t aubio_hist_mean(aubio_hist_t *s); 
andrew@0: /** weight the histogram */
andrew@0: void aubio_hist_weigth(aubio_hist_t *s); 
andrew@0: /** compute dynamic histogram for non-null elements */
andrew@0: void aubio_hist_dyn_notnull (aubio_hist_t *s, fvec_t *input);
andrew@0: 
andrew@0: #ifdef __cplusplus
andrew@0: }
andrew@0: #endif
andrew@0: 
andrew@0: #endif