/*
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mediastreamer2 library - modular sound and video processing and streaming
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Copyright (C) 2011 Belledonne Communications SARL.
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Author: Simon Morlat (simon.morlat@linphone.org)
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef mstonedetector_h
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#define mstonedetector_h
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#include <mediastreamer2/msfilter.h>
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/**
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* Structure describing which tone is to be detected.
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**/
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struct _MSToneDetectorDef{
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char tone_name[8];
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int frequency; /**<Expected frequency of the tone*/
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int min_duration; /**<Min duration of the tone in milliseconds */
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float min_amplitude; /**<Minimum amplitude of the tone, 1.0 corresponding to the normalized 0dbm level */
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};
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typedef struct _MSToneDetectorDef MSToneDetectorDef;
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/**
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* Structure carried as argument of the MS_TONE_DETECTOR_EVENT
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**/
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struct _MSToneDetectorEvent{
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char tone_name[8];
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uint64_t tone_start_time; /**<Tone start time in millisecond */
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};
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typedef struct _MSToneDetectorEvent MSToneDetectorEvent;
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/** Method to as the tone detector filter to monitor a new tone type.*/
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#define MS_TONE_DETECTOR_ADD_SCAN MS_FILTER_METHOD(MS_TONE_DETECTOR_ID,0,MSToneDetectorDef)
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/** Remove previously added scans*/
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#define MS_TONE_DETECTOR_CLEAR_SCANS MS_FILTER_METHOD_NO_ARG(MS_TONE_DETECTOR_ID,1)
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/** Event generated when a tone is detected */
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#define MS_TONE_DETECTOR_EVENT MS_FILTER_EVENT(MS_TONE_DETECTOR_ID,0,MSToneDetectorEvent)
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#endif
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