Mercurial > hg > audiostuff
comparison spandsp-0.0.6pre17/src/spandsp/private/tone_generate.h @ 4:26cd8f1ef0b1
import spandsp-0.0.6pre17
| author | Peter Meerwald <pmeerw@cosy.sbg.ac.at> |
|---|---|
| date | Fri, 25 Jun 2010 15:50:58 +0200 |
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| 3:c6c5a16ce2f2 | 4:26cd8f1ef0b1 |
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| 1 /* | |
| 2 * SpanDSP - a series of DSP components for telephony | |
| 3 * | |
| 4 * private/tone_generate.h - General telephony tone generation. | |
| 5 * | |
| 6 * Written by Steve Underwood <steveu@coppice.org> | |
| 7 * | |
| 8 * Copyright (C) 2001 Steve Underwood | |
| 9 * | |
| 10 * All rights reserved. | |
| 11 * | |
| 12 * This program is free software; you can redistribute it and/or modify | |
| 13 * it under the terms of the GNU Lesser General Public License version 2.1, | |
| 14 * as published by the Free Software Foundation. | |
| 15 * | |
| 16 * This program is distributed in the hope that it will be useful, | |
| 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 19 * GNU Lesser General Public License for more details. | |
| 20 * | |
| 21 * You should have received a copy of the GNU Lesser General Public | |
| 22 * License along with this program; if not, write to the Free Software | |
| 23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
| 24 * | |
| 25 * $Id: tone_generate.h,v 1.1 2008/11/30 10:17:31 steveu Exp $ | |
| 26 */ | |
| 27 | |
| 28 #if !defined(_SPANDSP_PRIVATE_TONE_GENERATE_H_) | |
| 29 #define _SPANDSP_PRIVATE_TONE_GENERATE_H_ | |
| 30 | |
| 31 struct tone_gen_tone_descriptor_s | |
| 32 { | |
| 33 int32_t phase_rate; | |
| 34 #if defined(SPANDSP_USE_FIXED_POINT) | |
| 35 int16_t gain; | |
| 36 #else | |
| 37 float gain; | |
| 38 #endif | |
| 39 }; | |
| 40 | |
| 41 /*! | |
| 42 Cadenced multi-tone generator descriptor. | |
| 43 */ | |
| 44 struct tone_gen_descriptor_s | |
| 45 { | |
| 46 tone_gen_tone_descriptor_t tone[4]; | |
| 47 int duration[4]; | |
| 48 int repeat; | |
| 49 }; | |
| 50 | |
| 51 /*! | |
| 52 Cadenced multi-tone generator state descriptor. This defines the state of | |
| 53 a single working instance of a generator. | |
| 54 */ | |
| 55 struct tone_gen_state_s | |
| 56 { | |
| 57 tone_gen_tone_descriptor_t tone[4]; | |
| 58 | |
| 59 uint32_t phase[4]; | |
| 60 int duration[4]; | |
| 61 int repeat; | |
| 62 | |
| 63 int current_section; | |
| 64 int current_position; | |
| 65 }; | |
| 66 | |
| 67 #endif | |
| 68 /*- End of file ------------------------------------------------------------*/ |