root/src/include/private/libteletone.h

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   1 /* 
   2  * libteletone
   3  * Copyright (C) 2005-2011, Anthony Minessale II <anthm@freeswitch.org>
   4  *
   5  * Version: MPL 1.1
   6  *
   7  * The contents of this file are subject to the Mftilla Public License Version
   8  * 1.1 (the "License"); you may not use this file except in compliance with
   9  * the License. You may obtain a copy of the License at
  10  * http://www.mftilla.org/MPL/
  11  *
  12  * Software distributed under the License is distributed on an "AS IS" basis,
  13  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  14  * for the specific language governing rights and limitations under the
  15  * License.
  16  *
  17  * The Original Code is libteletone
  18  *
  19  * The Initial Developer of the Original Code is
  20  * Anthony Minessale II <anthm@freeswitch.org>
  21  * Portions created by the Initial Developer are Copyright (C)
  22  * the Initial Developer. All Rights Reserved.
  23  *
  24  * Contributor(s):
  25  * 
  26  * Anthony Minessale II <anthm@freeswitch.org>
  27  *
  28  *
  29  * libteletone.h -- Tone Generator/Detector
  30  *
  31  *
  32  *
  33  * Exception:
  34  * The author hereby grants the use of this source code under the 
  35  * following license if and only if the source code is distributed
  36  * as part of the freetdm library.  Any use or distribution of this
  37  * source code outside the scope of the freetdm library will nullify the
  38  * following license and reinact the MPL 1.1 as stated above.
  39  *
  40  * Copyright (c) 2007, Anthony Minessale II
  41  * All rights reserved.
  42  * 
  43  * Redistribution and use in source and binary forms, with or without
  44  * modification, are permitted provided that the following conditions
  45  * are met:
  46  * 
  47  * * Redistributions of source code must retain the above copyright
  48  * notice, this list of conditions and the following disclaimer.
  49  * 
  50  * * Redistributions in binary form must reproduce the above copyright
  51  * notice, this list of conditions and the following disclaimer in the
  52  * documentation and/or other materials provided with the distribution.
  53  * 
  54  * * Neither the name of the original author; nor the names of any contributors
  55  * may be used to endorse or promote products derived from this software
  56  * without specific prior written permission.
  57  * 
  58  * 
  59  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  60  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  61  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  62  * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER
  63  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  64  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  65  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  66  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  67  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  68  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  69  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  70  */
  71 #ifndef LIBTELETONE_H
  72 #define LIBTELETONE_H
  73 
  74 #ifdef __cplusplus
  75 extern "C" {
  76 #endif
  77 
  78 #include <math.h>
  79 
  80 #define TELETONE_MAX_DTMF_DIGITS 128
  81 #define TELETONE_MAX_TONES 18
  82 #define TELETONE_TONE_RANGE 127
  83 
  84 typedef double teletone_process_t;
  85 
  86 /*! \file libteletone.h
  87     \brief Top level include file
  88 
  89         This file should be included by applications using the library
  90 */
  91 
  92 /*! \brief An abstraction to store a tone mapping */
  93 typedef struct {
  94         /*! An array of tone frequencies */
  95         teletone_process_t freqs[TELETONE_MAX_TONES];
  96 } teletone_tone_map_t;
  97 
  98 #if !defined(M_PI)
  99 /* C99 systems may not define M_PI */
 100 #define M_PI 3.14159265358979323846264338327
 101 #endif
 102 
 103 #ifdef _MSC_VER
 104 typedef __int16 int16_t;
 105 #endif
 106 
 107 #if (_MSC_VER >= 1400)                  // VC8+
 108 #define teletone_assert(expr) assert(expr);__analysis_assume( expr )
 109 #else
 110 #define teletone_assert(expr) assert(expr)
 111 #endif
 112 
 113 #ifdef _MSC_VER
 114 #if defined(TT_DECLARE_STATIC)
 115 #define TELETONE_API(type)                      type __stdcall
 116 #define TELETONE_API_NONSTD(type)               type __cdecl
 117 #define TELETONE_API_DATA
 118 #elif defined(TELETONE_EXPORTS)
 119 #define TELETONE_API(type)                      __declspec(dllexport) type __stdcall
 120 #define TELETONE_API_NONSTD(type)               __declspec(dllexport) type __cdecl
 121 #define TELETONE_API_DATA                               __declspec(dllexport)
 122 #else
 123 #define TELETONE_API(type)                      __declspec(dllimport) type __stdcall
 124 #define TELETONE_API_NONSTD(type)               __declspec(dllimport) type __cdecl
 125 #define TELETONE_API_DATA                               __declspec(dllimport)
 126 #endif
 127 #else
 128 #if (defined(__GNUC__) || defined(__SUNPRO_CC) || defined (__SUNPRO_C)) && defined(HAVE_VISIBILITY)
 129 #define TELETONE_API(type)              __attribute__((visibility("default"))) type
 130 #define TELETONE_API_NONSTD(type)       __attribute__((visibility("default"))) type
 131 #define TELETONE_API_DATA               __attribute__((visibility("default")))
 132 #else
 133 #define TELETONE_API(type)              type
 134 #define TELETONE_API_NONSTD(type)       type
 135 #define TELETONE_API_DATA
 136 #endif
 137 #endif
 138 
 139 #include "libteletone_generate.h"
 140 #include "libteletone_detect.h"
 141 
 142 #ifdef HAVE_STRING_H
 143 #include <string.h>
 144 #endif
 145 
 146 #ifdef __cplusplus
 147 }
 148 #endif
 149 
 150 #endif
 151 
 152 /* For Emacs:
 153  * Local Variables:
 154  * mode:c
 155  * indent-tabs-mode:t
 156  * tab-width:4
 157  * c-basic-offset:4
 158  * End:
 159  * For VIM:
 160  * vim:set softtabstop=4 shiftwidth=4 tabstop=4:
 161  */

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