[650cae3] | 1 | /* |
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| 2 | Copyright (C) 2003-2013 Paul Brossier <piem@aubio.org> |
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| 3 | |
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| 4 | This file is part of aubio. |
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| 5 | |
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| 6 | aubio is free software: you can redistribute it and/or modify |
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| 7 | it under the terms of the GNU General Public License as published by |
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| 8 | the Free Software Foundation, either version 3 of the License, or |
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| 9 | (at your option) any later version. |
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| 10 | |
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| 11 | aubio is distributed in the hope that it will be useful, |
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 14 | GNU General Public License for more details. |
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| 15 | |
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| 16 | You should have received a copy of the GNU General Public License |
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| 17 | along with aubio. If not, see <http://www.gnu.org/licenses/>. |
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| 18 | |
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| 19 | */ |
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| 20 | |
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| 21 | #ifndef _AUBIO_PARAMETER_H |
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| 22 | #define _AUBIO_PARAMETER_H |
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| 23 | |
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| 24 | /** \file |
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| 25 | |
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| 26 | Parameter with linear interpolation |
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| 27 | |
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| 28 | This object manages a parameter, with minimum and maximum values, and a |
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| 29 | number of steps to compute linear interpolation between two values. |
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| 30 | |
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| 31 | \example utils/test-parameter.c |
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| 32 | |
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| 33 | */ |
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| 34 | |
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| 35 | #ifdef __cplusplus |
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| 36 | extern "C" { |
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| 37 | #endif |
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| 38 | |
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| 39 | /** parameter object */ |
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| 40 | typedef struct _aubio_parameter_t aubio_parameter_t; |
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| 41 | |
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| 42 | /** create new parameter object |
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| 43 | |
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| 44 | \param min_value the minimum value of the new parameter |
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| 45 | \param max_value the maximum value of the new parameter |
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| 46 | \param steps the number of steps to interpolate from the old value to the target value |
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| 47 | |
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| 48 | \return the newly created ::aubio_parameter_t |
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| 49 | |
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| 50 | */ |
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| 51 | aubio_parameter_t * new_aubio_parameter(smpl_t min_value, smpl_t max_value, uint_t steps); |
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| 52 | |
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| 53 | /** set target value of the parameter |
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| 54 | |
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| 55 | \param param parameter, created by ::new_aubio_parameter |
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| 56 | \param value new target value |
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| 57 | |
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| 58 | \return 0 if successful, 1 otherwise |
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| 59 | |
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| 60 | */ |
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| 61 | uint_t aubio_parameter_set_target_value ( aubio_parameter_t * param, smpl_t value ); |
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| 62 | |
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| 63 | /** get next parameter |
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| 64 | |
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| 65 | \param param parameter, created by ::new_aubio_parameter |
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| 66 | |
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| 67 | \return new interpolated parameter value |
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| 68 | |
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| 69 | */ |
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| 70 | smpl_t aubio_parameter_get_next_value ( aubio_parameter_t * param ); |
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| 71 | |
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| 72 | /** get current parameter value, without interpolation |
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| 73 | |
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| 74 | \param param parameter, created by ::new_aubio_parameter |
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| 75 | |
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| 76 | \return current value |
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| 77 | |
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| 78 | */ |
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| 79 | smpl_t aubio_parameter_get_current_value ( aubio_parameter_t * param ); |
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| 80 | |
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| 81 | /** set current parameter value, skipping interpolation |
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| 82 | |
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| 83 | \param param parameter, created by ::new_aubio_parameter |
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| 84 | \param value new parameter value |
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| 85 | |
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| 86 | \return 0 if successful, 1 otherwise |
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| 87 | |
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| 88 | */ |
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| 89 | uint_t aubio_parameter_set_current_value ( aubio_parameter_t * param, smpl_t value ); |
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| 90 | |
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| 91 | /** set number of steps used for interpolation |
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| 92 | |
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| 93 | \param param parameter, created by ::new_aubio_parameter |
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| 94 | \param steps new number of steps |
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| 95 | |
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| 96 | \return 0 if successful, 1 otherwise |
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| 97 | |
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| 98 | */ |
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| 99 | uint_t aubio_parameter_set_steps ( aubio_parameter_t * param, uint_t steps ); |
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| 100 | |
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| 101 | /** get number of steps of this parameter |
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| 102 | |
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| 103 | \param param parameter, created by ::new_aubio_parameter |
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| 104 | |
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| 105 | \return number of steps |
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| 106 | |
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| 107 | */ |
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| 108 | uint_t aubio_parameter_get_steps ( aubio_parameter_t * param); |
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| 109 | |
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| 110 | /** set minimum value of this parameter |
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| 111 | |
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| 112 | \param param parameter, created by ::new_aubio_parameter |
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| 113 | \param min_value new minimum value |
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| 114 | |
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| 115 | \return 0 if successful, 1 otherwise |
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| 116 | |
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| 117 | */ |
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| 118 | uint_t aubio_parameter_set_min_value ( aubio_parameter_t * param, smpl_t min_value ); |
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| 119 | |
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| 120 | /** get minimum value of this parameter |
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| 121 | |
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| 122 | \param param parameter, created by ::new_aubio_parameter |
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| 123 | |
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| 124 | \return minimum value |
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| 125 | |
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| 126 | */ |
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| 127 | smpl_t aubio_parameter_get_min_value ( aubio_parameter_t * param ); |
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| 128 | |
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| 129 | /** set maximum value of this parameter |
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| 130 | |
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| 131 | \param param parameter, created by ::new_aubio_parameter |
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| 132 | \param max_value new maximum value |
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| 133 | |
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| 134 | \return 0 if successful, 1 otherwise |
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| 135 | |
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| 136 | */ |
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| 137 | uint_t aubio_parameter_set_max_value ( aubio_parameter_t * param, smpl_t max_value ); |
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| 138 | |
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| 139 | /** get maximum value of this parameter |
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| 140 | |
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| 141 | \param param parameter, created by ::new_aubio_parameter |
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| 142 | |
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| 143 | \return maximum value |
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| 144 | |
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| 145 | */ |
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| 146 | smpl_t aubio_parameter_get_max_value ( aubio_parameter_t * param ); |
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| 147 | |
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| 148 | /** destroy ::aubio_parameter_t object |
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| 149 | |
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| 150 | \param param parameter, created by ::new_aubio_parameter |
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| 151 | |
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| 152 | */ |
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| 153 | void del_aubio_parameter( aubio_parameter_t * param ); |
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| 154 | |
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| 155 | #ifdef __cplusplus |
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| 156 | } |
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| 157 | #endif |
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| 158 | |
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| 159 | #endif /* _AUBIO_PARAMETER_H */ |
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