/usr/include/libroardsp/dtmf.h is in libroar-dev 1.0~beta11-10.
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 | //dtmf.h:
/*
* Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2012-2014
*
* This file is part of libroar a 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 General Public License version 3
* as published by the Free Software Foundation.
*
* libroar 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 software; see the file COPYING. If not, write to
* the Free Software Foundation, 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* NOTE for everyone want's to change something and send patches:
* read README and HACKING! There a addition information on
* the license of this document you need to read before you send
* any patches.
*
* NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc
* or libpulse*:
* The libs libroaresd, libroararts and libroarpulse link this lib
* and are therefore GPL. Because of this it may be illigal to use
* them with any software that uses libesd, libartsc or libpulse*.
*/
#ifndef _LIBROARDSP_DTMF_H_
#define _LIBROARDSP_DTMF_H_
#include "libroardsp.h"
#define ROAR_DTMF_OPTIONS_NONE 0
#define ROAR_DTMF_CHAR_DTMF(x) (((x) & 0x00FF) + 0x0000)
#define ROAR_DTMF_CHAR_ROAR(x) (((x) & 0x00FF) + 0x0100)
#define ROAR_DTMF_CHAR_BYTE(x) (((x) & 0x00FF) + 0x0200)
#define ROAR_DTMF_CHAR_BREAK ((uint16_t)0)
#define ROAR_DTMF_CHAR_NOOP ROAR_DTMF_CHAR_ROAR(0)
#define ROAR_DTMF_CHAR_ESCAPE ROAR_DTMF_CHAR_ROAR(27)
ssize_t roar_dtmf_mus2samples(const int_least32_t t, const uint32_t rate);
int roar_dtmf_break(int16_t * samples, const size_t len, const uint32_t rate, const int options);
int roar_dtmf_tone (int16_t * samples, const size_t len, const uint32_t rate, const int options, const uint16_t c);
uint16_t roar_dtmf_freqs2char(const int options, float f0, float f1);
#endif
//ll
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