source: python/ext/py-sink.c @ 4f89154

feature/autosinkfeature/constantqfeature/pitchshiftfeature/pydocstringsfeature/timestretchsampler
Last change on this file since 4f89154 was 4f89154, checked in by Paul Brossier <piem@piem.org>, 3 years ago

python/ext/py-{source,sink}.c: free string uri

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1#include "aubio-types.h"
2
3typedef struct
4{
5  PyObject_HEAD
6  aubio_sink_t * o;
7  char_t* uri;
8  uint_t samplerate;
9  uint_t channels;
10  fvec_t write_data;
11  fmat_t mwrite_data;
12} Py_sink;
13
14static char Py_sink_doc[] = ""
15"  __new__(path, samplerate = 44100, channels = 1)\n"
16"\n"
17"      Create a new sink, opening the given path for writing.\n"
18"\n"
19"      Examples\n"
20"      --------\n"
21"\n"
22"      Create a new sink at 44100Hz, mono:\n"
23"\n"
24"      >>> sink('/tmp/t.wav')\n"
25"\n"
26"      Create a new sink at 8000Hz, mono:\n"
27"\n"
28"      >>> sink('/tmp/t.wav', samplerate = 8000)\n"
29"\n"
30"      Create a new sink at 32000Hz, stereo:\n"
31"\n"
32"      >>> sink('/tmp/t.wav', samplerate = 32000, channels = 2)\n"
33"\n"
34"      Create a new sink at 32000Hz, 5 channels:\n"
35"\n"
36"      >>> sink('/tmp/t.wav', channels = 5, samplerate = 32000)\n"
37"\n"
38"  __call__(vec, write)\n"
39"      x(vec,write) <==> x.do(vec, write)\n"
40"\n"
41"      Write vector to sink.\n"
42"\n"
43"      See also\n"
44"      --------\n"
45"      aubio.sink.do\n"
46"\n";
47
48static char Py_sink_do_doc[] = ""
49"x.do(vec, write) <==> x(vec, write)\n"
50"\n"
51"write monophonic vector to sink";
52
53static char Py_sink_do_multi_doc[] = ""
54"x.do_multi(mat, write)\n"
55"\n"
56"write polyphonic vector to sink";
57
58static char Py_sink_close_doc[] = ""
59"x.close()\n"
60"\n"
61"close this sink now";
62
63static PyObject *
64Py_sink_new (PyTypeObject * pytype, PyObject * args, PyObject * kwds)
65{
66  Py_sink *self;
67  char_t* uri = NULL;
68  uint_t samplerate = 0;
69  uint_t channels = 0;
70  static char *kwlist[] = { "uri", "samplerate", "channels", NULL };
71
72  if (!PyArg_ParseTupleAndKeywords (args, kwds, "|sII", kwlist,
73          &uri, &samplerate, &channels)) {
74    return NULL;
75  }
76
77  self = (Py_sink *) pytype->tp_alloc (pytype, 0);
78
79  if (self == NULL) {
80    return NULL;
81  }
82
83  self->uri = NULL;
84  if (uri != NULL) {
85    self->uri = (char_t *)malloc(sizeof(char_t) * (strnlen(uri, PATH_MAX) + 1));
86    strncpy(self->uri, uri, strnlen(uri, PATH_MAX) + 1);
87  }
88
89  self->samplerate = Py_aubio_default_samplerate;
90  if (samplerate != 0) {
91    self->samplerate = samplerate;
92  }
93
94  self->channels = 1;
95  if (channels != 0) {
96    self->channels = channels;
97  }
98
99  return (PyObject *) self;
100}
101
102static int
103Py_sink_init (Py_sink * self, PyObject * args, PyObject * kwds)
104{
105  self->o = new_aubio_sink ( self->uri, 0 );
106  if (self->o == NULL) {
107    // error string was set in new_aubio_sink
108    return -1;
109  }
110  if (aubio_sink_preset_channels(self->o, self->channels) != 0) {
111    // error string was set in aubio_sink_preset_channels
112    return -1;
113  }
114  if (aubio_sink_preset_samplerate(self->o, self->samplerate) != 0) {
115    // error string was set in aubio_sink_preset_samplerate
116    return -1;
117  }
118
119  self->samplerate = aubio_sink_get_samplerate ( self->o );
120  self->channels = aubio_sink_get_channels ( self->o );
121
122  return 0;
123}
124
125static void
126Py_sink_del (Py_sink *self, PyObject *unused)
127{
128  del_aubio_sink(self->o);
129  free(self->mwrite_data.data);
130  if (self->uri) {
131    free(self->uri);
132  }
133  Py_TYPE(self)->tp_free((PyObject *) self);
134}
135
136/* function Py_sink_do */
137static PyObject *
138Py_sink_do(Py_sink * self, PyObject * args)
139{
140  /* input vectors python prototypes */
141  PyObject * write_data_obj;
142
143  /* input vectors prototypes */
144  uint_t write;
145
146
147  if (!PyArg_ParseTuple (args, "OI", &write_data_obj, &write)) {
148    return NULL;
149  }
150
151  /* input vectors parsing */
152  if (!PyAubio_ArrayToCFvec(write_data_obj, &(self->write_data))) {
153    return NULL;
154  }
155
156
157  /* compute _do function */
158  aubio_sink_do (self->o, &(self->write_data), write);
159
160  Py_RETURN_NONE;
161}
162
163/* function Py_sink_do_multi */
164static PyObject *
165Py_sink_do_multi(Py_sink * self, PyObject * args)
166{
167  /* input vectors python prototypes */
168  PyObject * write_data_obj;
169
170  /* input vectors prototypes */
171  uint_t write;
172
173
174  if (!PyArg_ParseTuple (args, "OI", &write_data_obj, &write)) {
175    return NULL;
176  }
177
178
179  /* input vectors parsing */
180  if (!PyAubio_ArrayToCFmat(write_data_obj, &(self->mwrite_data))) {
181    return NULL;
182  }
183
184  /* compute _do function */
185  aubio_sink_do_multi (self->o, &(self->mwrite_data), write);
186  Py_RETURN_NONE;
187}
188
189static PyMemberDef Py_sink_members[] = {
190  {"uri", T_STRING, offsetof (Py_sink, uri), READONLY,
191    "path at which the sink was created"},
192  {"samplerate", T_INT, offsetof (Py_sink, samplerate), READONLY,
193    "samplerate at which the sink was created"},
194  {"channels", T_INT, offsetof (Py_sink, channels), READONLY,
195    "number of channels with which the sink was created"},
196  { NULL } // sentinel
197};
198
199static PyObject *
200Pyaubio_sink_close (Py_sink *self, PyObject *unused)
201{
202  aubio_sink_close (self->o);
203  Py_RETURN_NONE;
204}
205
206static PyMethodDef Py_sink_methods[] = {
207  {"do", (PyCFunction) Py_sink_do, METH_VARARGS, Py_sink_do_doc},
208  {"do_multi", (PyCFunction) Py_sink_do_multi, METH_VARARGS, Py_sink_do_multi_doc},
209  {"close", (PyCFunction) Pyaubio_sink_close, METH_NOARGS, Py_sink_close_doc},
210  {NULL} /* sentinel */
211};
212
213PyTypeObject Py_sinkType = {
214  PyVarObject_HEAD_INIT (NULL, 0)
215  "aubio.sink",
216  sizeof (Py_sink),
217  0,
218  (destructor) Py_sink_del,
219  0,
220  0,
221  0,
222  0,
223  0,
224  0,
225  0,
226  0,
227  0,
228  (ternaryfunc)Py_sink_do,
229  0,
230  0,
231  0,
232  0,
233  Py_TPFLAGS_DEFAULT,
234  Py_sink_doc,
235  0,
236  0,
237  0,
238  0,
239  0,
240  0,
241  Py_sink_methods,
242  Py_sink_members,
243  0,
244  0,
245  0,
246  0,
247  0,
248  0,
249  (initproc) Py_sink_init,
250  0,
251  Py_sink_new,
252  0,
253  0,
254  0,
255  0,
256  0,
257  0,
258  0,
259  0,
260  0,
261};
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