private/swept_tone.h

00001 /*
00002  * SpanDSP - a series of DSP components for telephony
00003  *
00004  * private/swept_tone.h - Swept tone generation
00005  *
00006  * Written by Steve Underwood <steveu@coppice.org>
00007  *
00008  * Copyright (C) 2009 Steve Underwood
00009  *
00010  * All rights reserved.
00011  *
00012  * This program is free software; you can redistribute it and/or modify
00013  * it under the terms of the GNU General Public License version 2, as
00014  * published by the Free Software Foundation.
00015  *
00016  * This program is distributed in the hope that it will be useful,
00017  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00018  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00019  * GNU General Public License for more details.
00020  *
00021  * You should have received a copy of the GNU General Public License
00022  * along with this program; if not, write to the Free Software
00023  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00024  *
00025  * $Id: swept_tone.h,v 1.1 2009/09/22 12:54:33 steveu Exp $
00026  */
00027 
00028 #if !defined(_SPANDSP_PRIVATE_SWEPT_TONE_H_)
00029 #define _SPANDSP_PRIVATE_SWEPT_TONE_H_
00030 
00031 struct swept_tone_state_s
00032 {
00033     int32_t starting_phase_inc;
00034     int32_t phase_inc_step;
00035     int scale;
00036     int duration;
00037     int repeating;
00038     int pos;
00039     int32_t current_phase_inc;
00040     uint32_t phase;
00041 };
00042 
00043 #endif
00044 /*- End of file ------------------------------------------------------------*/