text: /* 
   * libteletone
   * Copyright (C) 2005-2014, Anthony Minessale II <anthm@freeswitch.org>
   *
   * Version: MPL 1.1
   *
   * The contents of this file are subject to the Mozilla Public License Version
   * 1.1 (the "License"); you may not use this file except in compliance with
   * the License. You may obtain a copy of the License at
   * http://www.mozilla.org/MPL/
   *
   * Software distributed under the License is distributed on an "AS IS" basis,
   * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
   * for the specific language governing rights and limitations under the
   * License.
   *
   * The Original Code is libteletone
   *
   * The Initial Developer of the Original Code is
   * Anthony Minessale II <anthm@freeswitch.org>
   * Portions created by the Initial Developer are Copyright (C)
   * the Initial Developer. All Rights Reserved.
   *
   * Contributor(s):
   * 
   * Anthony Minessale II <anthm@freeswitch.org>
   *
   *
   * libteletone.h -- Tone Generator/Detector
   *
   *
   *
   * Exception:
   * The author hereby grants the use of this source code under the 
   * following license if and only if the source code is distributed
   * as part of the OpenZAP or FreeTDM library.  Any use or distribution of this
   * source code outside the scope of the OpenZAP or FreeTDM library will nullify the
   * following license and reinact the MPL 1.1 as stated above.
   *
   * Copyright (c) 2007, Anthony Minessale II
   * All rights reserved.
   * 
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 
   * * Redistributions of source code must retain the above copyright
   * notice, this list of conditions and the following disclaimer.
   * 
   * * Redistributions in binary form must reproduce the above copyright
   * notice, this list of conditions and the following disclaimer in the
   * documentation and/or other materials provided with the distribution.
   * 
   * * Neither the name of the original author; nor the names of any contributors
   * may be used to endorse or promote products derived from this software
   * without specific prior written permission.
   * 
   * 
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER
   * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
   * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
   * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  #ifndef LIBTELETONE_H
  #define LIBTELETONE_H
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  #include <math.h>
  
  #define	TELETONE_MAX_DTMF_DIGITS 128
  #define TELETONE_MAX_TONES 18
  #define TELETONE_TONE_RANGE 127
  
  typedef double teletone_process_t;
  
  /*! \file libteletone.h
      \brief Top level include file
  
  	This file should be included by applications using the library
  */
  
  /*! \brief An abstraction to store a tone mapping */
  typedef struct {
  	/*! An array of tone frequencies */
  	teletone_process_t freqs[TELETONE_MAX_TONES];
  } teletone_tone_map_t;
  
  #if !defined(M_PI)
  /* C99 systems may not define M_PI */
  #define M_PI 3.14159265358979323846264338327
  #endif
  
  #ifdef _MSC_VER
  typedef __int16 int16_t;
  #endif
  
  #if (_MSC_VER >= 1400)			// VC8+
  #define teletone_assert(expr) assert(expr);__analysis_assume( expr )
  #else
  #define teletone_assert(expr) assert(expr)
  #endif
  
  #ifdef _MSC_VER
  #if defined(TT_DECLARE_STATIC)
  #define TELETONE_API(type)			type __stdcall
  #define TELETONE_API_NONSTD(type)		type __cdecl
  #define TELETONE_API_DATA
  #elif defined(TELETONE_EXPORTS)
  #define TELETONE_API(type)			__declspec(dllexport) type __stdcall
  #define TELETONE_API_NONSTD(type)		__declspec(dllexport) type __cdecl
  #define TELETONE_API_DATA				__declspec(dllexport)
  #else
  #define TELETONE_API(type)			__declspec(dllimport) type __stdcall
  #define TELETONE_API_NONSTD(type)		__declspec(dllimport) type __cdecl
  #define TELETONE_API_DATA				__declspec(dllimport)
  #endif
  #else
  #if (defined(__GNUC__) || defined(__SUNPRO_CC) || defined (__SUNPRO_C)) && defined(HAVE_VISIBILITY)
  #define TELETONE_API(type)		__attribute__((visibility("default"))) type
  #define TELETONE_API_NONSTD(type)	__attribute__((visibility("default"))) type
  #define TELETONE_API_DATA		__attribute__((visibility("default")))
  #else
  #define TELETONE_API(type)		type
  #define TELETONE_API_NONSTD(type)	type
  #define TELETONE_API_DATA
  #endif
  #endif
  
  #include "libteletone_generate.h"
  #include "libteletone_detect.h"
  
  #ifdef HAVE_STRING_H
  #include <string.h>
  #endif
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif
  
  /* For Emacs:
   * Local Variables:
   * mode:c
   * indent-tabs-mode:t
   * tab-width:4
   * c-basic-offset:4
   * End:
   * For VIM:
   * vim:set softtabstop=4 shiftwidth=4 tabstop=4 noet:
   */
  