1 | #include "aubio-types.h" |
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2 | |
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3 | static char Py_fft_doc[] = "fft object"; |
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4 | |
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5 | typedef struct |
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6 | { |
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7 | PyObject_HEAD |
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8 | aubio_fft_t * o; |
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9 | uint_t win_s; |
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10 | cvec_t *out; |
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11 | fvec_t *rout; |
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12 | } Py_fft; |
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13 | |
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14 | static PyObject * |
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15 | Py_fft_new (PyTypeObject * type, PyObject * args, PyObject * kwds) |
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16 | { |
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17 | int win_s = 0; |
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18 | Py_fft *self; |
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19 | static char *kwlist[] = { "win_s", NULL }; |
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20 | |
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21 | if (!PyArg_ParseTupleAndKeywords (args, kwds, "|I", kwlist, |
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22 | &win_s)) { |
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23 | return NULL; |
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24 | } |
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25 | |
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26 | self = (Py_fft *) type->tp_alloc (type, 0); |
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27 | |
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28 | if (self == NULL) { |
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29 | return NULL; |
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30 | } |
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31 | |
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32 | self->win_s = Py_default_vector_length; |
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33 | |
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34 | if (win_s > 0) { |
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35 | self->win_s = win_s; |
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36 | } else if (win_s < 0) { |
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37 | PyErr_SetString (PyExc_ValueError, |
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38 | "can not use negative window size"); |
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39 | return NULL; |
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40 | } |
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41 | |
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42 | return (PyObject *) self; |
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43 | } |
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44 | |
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45 | static int |
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46 | Py_fft_init (Py_fft * self, PyObject * args, PyObject * kwds) |
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47 | { |
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48 | self->o = new_aubio_fft (self->win_s); |
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49 | if (self->o == NULL) { |
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50 | char_t errstr[30]; |
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51 | sprintf(errstr, "error creating fft with win_s=%d", self->win_s); |
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52 | PyErr_SetString (PyExc_Exception, errstr); |
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53 | return -1; |
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54 | } |
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55 | self->out = new_cvec(self->win_s); |
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56 | self->rout = new_fvec(self->win_s); |
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57 | |
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58 | return 0; |
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59 | } |
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60 | |
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61 | static void |
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62 | Py_fft_del (Py_fft *self, PyObject *unused) |
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63 | { |
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64 | del_aubio_fft(self->o); |
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65 | del_cvec(self->out); |
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66 | del_fvec(self->rout); |
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67 | Py_TYPE(self)->tp_free((PyObject *) self); |
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68 | } |
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69 | |
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70 | static PyObject * |
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71 | Py_fft_do(Py_fft * self, PyObject * args) |
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72 | { |
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73 | PyObject *input; |
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74 | fvec_t *vec; |
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75 | |
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76 | if (!PyArg_ParseTuple (args, "O", &input)) { |
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77 | return NULL; |
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78 | } |
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79 | |
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80 | vec = PyAubio_ArrayToCFvec (input); |
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81 | |
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82 | if (vec == NULL) { |
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83 | return NULL; |
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84 | } |
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85 | |
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86 | // compute the function |
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87 | aubio_fft_do (((Py_fft *)self)->o, vec, self->out); |
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88 | return (PyObject *)PyAubio_CCvecToPyCvec(self->out); |
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89 | } |
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90 | |
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91 | static PyMemberDef Py_fft_members[] = { |
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92 | {"win_s", T_INT, offsetof (Py_fft, win_s), READONLY, |
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93 | "size of the window"}, |
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94 | {NULL} |
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95 | }; |
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96 | |
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97 | static PyObject * |
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98 | Py_fft_rdo(Py_fft * self, PyObject * args) |
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99 | { |
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100 | PyObject *input; |
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101 | cvec_t *vec; |
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102 | |
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103 | if (!PyArg_ParseTuple (args, "O", &input)) { |
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104 | return NULL; |
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105 | } |
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106 | |
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107 | vec = PyAubio_ArrayToCCvec (input); |
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108 | |
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109 | if (vec == NULL) { |
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110 | return NULL; |
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111 | } |
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112 | |
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113 | // compute the function |
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114 | aubio_fft_rdo (((Py_fft *)self)->o, vec, self->rout); |
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115 | return (PyObject *)PyAubio_CFvecToArray(self->rout); |
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116 | } |
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117 | |
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118 | static PyMethodDef Py_fft_methods[] = { |
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119 | {"rdo", (PyCFunction) Py_fft_rdo, METH_VARARGS, |
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120 | "synthesis of spectral grain"}, |
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121 | {NULL} |
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122 | }; |
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123 | |
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124 | PyTypeObject Py_fftType = { |
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125 | PyVarObject_HEAD_INIT (NULL, 0) |
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126 | "aubio.fft", |
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127 | sizeof (Py_fft), |
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128 | 0, |
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129 | (destructor) Py_fft_del, |
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130 | 0, |
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131 | 0, |
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132 | 0, |
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133 | 0, |
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134 | 0, |
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135 | 0, |
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136 | 0, |
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137 | 0, |
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138 | 0, |
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139 | (ternaryfunc)Py_fft_do, |
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140 | 0, |
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141 | 0, |
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142 | 0, |
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143 | 0, |
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144 | Py_TPFLAGS_DEFAULT, |
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145 | Py_fft_doc, |
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146 | 0, |
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147 | 0, |
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148 | 0, |
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149 | 0, |
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150 | 0, |
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151 | 0, |
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152 | Py_fft_methods, |
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153 | Py_fft_members, |
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154 | 0, |
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155 | 0, |
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156 | 0, |
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157 | 0, |
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158 | 0, |
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159 | 0, |
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160 | (initproc) Py_fft_init, |
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161 | 0, |
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162 | Py_fft_new, |
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163 | }; |
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