peakdetector.h

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00001 /*****************************************************************
00002  * gavl - a general purpose audio/video processing library
00003  *
00004  * Copyright (c) 2001 - 2012 Members of the Gmerlin project
00005  * gmerlin-general@lists.sourceforge.net
00006  * http://gmerlin.sourceforge.net
00007  *
00008  * This program is free software: you can redistribute it and/or modify
00009  * it under the terms of the GNU General Public License as published by
00010  * the Free Software Foundation, either version 2 of the License, or
00011  * (at your option) any later version.
00012  *
00013  * This program is distributed in the hope that it will be useful,
00014  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00015  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00016  * GNU General Public License for more details.
00017  *
00018  * You should have received a copy of the GNU General Public License
00019  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
00020  * *****************************************************************/
00021 
00027 #ifndef GAVL_PEAKDETECTORS_H_INCLUDED
00028 #define GAVL_PEAKDETECTORS_H_INCLUDED
00029 
00030 #include <gavl/connectors.h>
00031 
00032 #ifdef __cplusplus
00033 extern "C" {
00034 #endif
00035 
00051 typedef struct gavl_peak_detector_s gavl_peak_detector_t;
00052   
00053 /* Create / destroy */
00054 
00065 typedef void (*gavl_update_peak_callback)(void * priv,
00066                                           int samples,
00067                                           double min, double max, double abs);
00068 
00079 typedef void (*gavl_update_peaks_callback)(void * priv,
00080                                            int samples,
00081                                            const double * min,
00082                                            const double * max,
00083                                            const double * abs);
00084 
00089 GAVL_PUBLIC
00090 gavl_peak_detector_t * gavl_peak_detector_create();
00091 
00101 GAVL_PUBLIC
00102 void gavl_peak_detector_set_callbacks(gavl_peak_detector_t * pd,
00103                                       gavl_update_peak_callback peak_callback,
00104                                       gavl_update_peaks_callback peaks_callback,
00105                                       void * priv);
00106 
00107   
00112 GAVL_PUBLIC
00113 void gavl_peak_detector_destroy(gavl_peak_detector_t *pd);
00114 
00123 GAVL_PUBLIC
00124 void gavl_peak_detector_set_format(gavl_peak_detector_t *pd,
00125                                    const gavl_audio_format_t * format);
00126 
00134 GAVL_PUBLIC const gavl_audio_format_t *
00135 gavl_peak_detector_get_format(gavl_peak_detector_t * pd);
00136 
00137   
00143 GAVL_PUBLIC
00144 void gavl_peak_detector_update(gavl_peak_detector_t *pd,
00145                                gavl_audio_frame_t * frame);
00146 
00157 GAVL_PUBLIC
00158 gavl_audio_sink_t * gavl_peak_detector_get_sink(gavl_peak_detector_t *pd);
00159   
00171 GAVL_PUBLIC
00172 void gavl_peak_detector_get_peak(gavl_peak_detector_t * pd,
00173                                  double * min, double * max,
00174                                  double * abs);
00175 
00187 GAVL_PUBLIC
00188 void gavl_peak_detector_get_peaks(gavl_peak_detector_t * pd,
00189                                   double * min, double * max,
00190                                   double * abs);
00191   
00196 GAVL_PUBLIC
00197 void gavl_peak_detector_reset(gavl_peak_detector_t * pd);
00198 
00205 #ifdef __cplusplus
00206 }
00207 #endif
00208 
00209 #endif // GAVL_PEAKDETECTORS_H_INCLUDED

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