/*
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* Copyright (c) 2010-2019 Belledonne Communications SARL.
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*
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* This file is part of mediastreamer2.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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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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*
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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, see <http://www.gnu.org/licenses/>.
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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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