69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
/*
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* SpanDSP - a series of DSP components for telephony
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*
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* private/tone_generate.h - General telephony tone generation.
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*
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* Written by Steve Underwood <steveu@coppice.org>
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*
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* Copyright (C) 2001 Steve Underwood
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*
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* All rights reserved.
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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 Lesser General Public License version 2.1,
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* as published by the Free Software Foundation.
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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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* $Id: tone_generate.h,v 1.1 2008/11/30 10:17:31 steveu Exp $
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*/
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#if !defined(_SPANDSP_PRIVATE_TONE_GENERATE_H_)
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#define _SPANDSP_PRIVATE_TONE_GENERATE_H_
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struct tone_gen_tone_descriptor_s
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{
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int32_t phase_rate;
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#if defined(SPANDSP_USE_FIXED_POINT)
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int16_t gain;
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#else
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float gain;
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#endif
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};
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/*!
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Cadenced multi-tone generator descriptor.
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*/
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struct tone_gen_descriptor_s
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{
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tone_gen_tone_descriptor_t tone[4];
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int duration[4];
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int repeat;
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};
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/*!
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Cadenced multi-tone generator state descriptor. This defines the state of
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a single working instance of a generator.
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*/
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struct tone_gen_state_s
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{
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tone_gen_tone_descriptor_t tone[4];
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uint32_t phase[4];
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int duration[4];
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int repeat;
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int current_section;
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int current_position;
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};
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#endif
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/*- End of file ------------------------------------------------------------*/
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