/usr/include/mediastreamer2/msvolume.h is in libmediastreamer-dev 3.6.1-2.5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 | /*
mediastreamer2 library - modular sound and video processing and streaming
Copyright (C) 2006 Simon MORLAT (simon.morlat@linphone.org)
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef msvolume_h
#define msvolume_h
#include <mediastreamer2/msfilter.h>
/**
* The Volume MSFilter can do:
* - measurements of the input signal power, returned in dbm0 or linear scale
* - apply a gain to the input signal and output this amplified signal to its output.
* By default gain is 1, in which case the filter does not modify the signal (and even does not
* copy the buffers, just post them on its output queue.
**/
/*returns a volume meter in db0 (max=0 db0)*/
#define MS_VOLUME_GET MS_FILTER_METHOD(MS_VOLUME_ID,0,float)
/*returns a volume in linear scale between 0 and 1 */
#define MS_VOLUME_GET_LINEAR MS_FILTER_METHOD(MS_VOLUME_ID,1,float)
/* set a gain */
#define MS_VOLUME_SET_GAIN MS_FILTER_METHOD(MS_VOLUME_ID,2,float)
#define MS_VOLUME_SET_PEER MS_FILTER_METHOD(MS_VOLUME_ID,4, MSFilter )
#define MS_VOLUME_SET_EA_THRESHOLD MS_FILTER_METHOD(MS_VOLUME_ID,5,float)
#define MS_VOLUME_SET_EA_SPEED MS_FILTER_METHOD(MS_VOLUME_ID,6,float)
#define MS_VOLUME_SET_EA_FORCE MS_FILTER_METHOD(MS_VOLUME_ID,7,float)
#define MS_VOLUME_ENABLE_AGC MS_FILTER_METHOD(MS_VOLUME_ID,8,int)
#define MS_VOLUME_ENABLE_NOISE_GATE MS_FILTER_METHOD(MS_VOLUME_ID,9,int)
#define MS_VOLUME_SET_NOISE_GATE_THRESHOLD MS_FILTER_METHOD(MS_VOLUME_ID,10,float)
#define MS_VOLUME_SET_EA_SUSTAIN MS_FILTER_METHOD(MS_VOLUME_ID,11,int)
#define MS_VOLUME_SET_NOISE_GATE_FLOORGAIN MS_FILTER_METHOD(MS_VOLUME_ID,12,float)
/* set a gain in db */
#define MS_VOLUME_SET_DB_GAIN MS_FILTER_METHOD(MS_VOLUME_ID,13,float)
/* get a linear gain */
#define MS_VOLUME_GET_GAIN MS_FILTER_METHOD(MS_VOLUME_ID,14,float)
/* get the gain in db*/
#define MS_VOLUME_GET_GAIN_DB MS_FILTER_METHOD(MS_VOLUME_ID,15,float)
#define MS_VOLUME_REMOVE_DC MS_FILTER_METHOD(MS_VOLUME_ID,16,int)
#define MS_VOLUME_SET_EA_TRANSMIT_THRESHOLD MS_FILTER_METHOD(MS_VOLUME_ID,17,float)
#define MS_VOLUME_DB_LOWEST (-120) /*arbitrary value returned when linear volume is 0*/
extern MSFilterDesc ms_volume_desc;
#endif
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