/usr/include/roaraudio/ltm.h is in libroar-dev 1.0~beta11-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/*
* Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010-2014
*
* This file is part of RoarAudio,
* a cross-platform sound system for both, home and professional use.
* See README for details.
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* as published by the Free Software Foundation.
*
* RoarAudio 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this software; see the file COPYING. If not, write to
* the Free Software Foundation, 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* NOTE: Even though this file is LGPLed it (may) include GPLed files
* so the license of this file is/may therefore downgraded to GPL.
* See HACKING for details.
*/
#ifndef _ROARAUDIO_LTM_H_
#define _ROARAUDIO_LTM_H_
// monitoring targets:
/* Vars used below:
* t = time
* w = window size
* l = history size
* S(t) = signal at time t
* H{g}(n) = history of type g element n
*/
#define ROAR_LTM_MT_NONE 0x0000 /* const for init of lists */
#define ROAR_LTM_MT_INACT 0x0001 /* input activit */
#define ROAR_LTM_MT_OUTACT 0x0002 /* output activity */
#define ROAR_LTM_MT_ACT 0x0004 /* any (in+out+other) activity */
#define ROAR_LTM_MT_AVG 0x0008 /* signal avg: SUM{t-w->t}(S(t))/w */
#define ROAR_LTM_MT_PEAK 0x0010 /* signal min and max values: MIN(S(t-w..t)), MAX(S(t-w..t)) */
#define ROAR_LTM_MT_RMS 0x0020 /* signal RMS^2: SUM{t-w->t}(S(t)^2) */
#define ROAR_LTM_MT_RMSPEAK 0x0040 /* signal RMS^2 min and max: MIN(H{RMS}(0..l)), MAX(H{RMS}(0..l)) */
#define ROAR_LTM_MT_HISTORY 0x0080 /* request to hold a history */
#define ROAR_LTM_MTBITS 16 /* number of bits for MTs */
// pre-defined windows:
#define ROAR_LTM_WIN_WORKBLOCK 0 /* The last block which the server worked on */
/* This block does not have any sub-block historys (H()) */
// command sub-sub-types:
#define ROAR_LTM_SST_NOOP 0
#define ROAR_LTM_SST_REGISTER 1
#define ROAR_LTM_SST_UNREGISTER 2
#define ROAR_LTM_SST_GET_RAW 3
#endif
//ll
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