shithub: aubio

Download patch

ref: 1a121ca40a99fb3b9f78aa503f2726ee939ea240
parent: 31a5c405338cad0dd084411e6c9b6eeece8bae20
author: Paul Brossier <piem@piem.org>
date: Sun Feb 23 12:32:49 EST 2014 

python/ext/py-sink.c: add channels and do_multi


--- a/python/ext/py-sink.c
+++ b/python/ext/py-sink.c
@@ -6,6 +6,7 @@
   aubio_sink_t * o;
   char_t* uri;
   uint_t samplerate;
+  uint_t channels;
 } Py_sink;
 
 static char Py_sink_doc[] = "sink object";
@@ -16,10 +17,11 @@
   Py_sink *self;
   char_t* uri = NULL;
   uint_t samplerate = 0;
-  static char *kwlist[] = { "uri", "samplerate", NULL };
+  uint_t channels = 0;
+  static char *kwlist[] = { "uri", "samplerate", "channels", NULL };
 
-  if (!PyArg_ParseTupleAndKeywords (args, kwds, "|sI", kwlist,
-          &uri, &samplerate)) {
+  if (!PyArg_ParseTupleAndKeywords (args, kwds, "|sII", kwlist,
+          &uri, &samplerate, &channels)) {
     return NULL;
   }
 
@@ -43,15 +45,42 @@
     return NULL;
   }
 
+  self->channels = 1;
+  if ((sint_t)channels > 0) {
+    self->channels = channels;
+  } else if ((sint_t)channels < 0) {
+    PyErr_SetString (PyExc_ValueError,
+        "can not use negative or null value for channels");
+    return NULL;
+  }
+
   return (PyObject *) self;
 }
 
-AUBIO_INIT(sink , self->uri, self->samplerate)
+static int
+Py_sink_init (Py_sink * self, PyObject * args, PyObject * kwds)
+{
+  if (self->channels == 1) {
+    self->o = new_aubio_sink ( self->uri, self->samplerate );
+  } else {
+    self->o = new_aubio_sink ( self->uri, 0 );
+    aubio_sink_preset_channels ( self->o, self->channels );
+    aubio_sink_preset_samplerate ( self->o, self->samplerate );
+  }
+  if (self->o == NULL) {
+    PyErr_SetString (PyExc_StandardError, "error creating sink with this uri");
+    return -1;
+  }
+  self->samplerate = aubio_sink_get_samplerate ( self->o );
+  self->channels = aubio_sink_get_channels ( self->o );
 
+  return 0;
+}
+
 AUBIO_DEL(sink)
 
 /* function Py_sink_do */
-static PyObject * 
+static PyObject *
 Py_sink_do(Py_sink * self, PyObject * args)
 {
   /* input vectors python prototypes */
@@ -74,10 +103,10 @@
     return NULL;
   }
 
-  
-  
 
 
+
+
   /* compute _do function */
   aubio_sink_do (self->o, write_data, write);
 
@@ -84,9 +113,43 @@
   Py_RETURN_NONE;
 }
 
+/* function Py_sink_do */
+static PyObject *
+Py_sink_do_multi(Py_sink * self, PyObject * args)
+{
+  /* input vectors python prototypes */
+  PyObject * write_data_obj;
+
+  /* input vectors prototypes */
+  fmat_t * write_data;
+  uint_t write;
+
+
+  if (!PyArg_ParseTuple (args, "OI", &write_data_obj, &write)) {
+    return NULL;
+  }
+
+
+  /* input vectors parsing */
+  write_data = PyAubio_ArrayToCFmat (write_data_obj);
+
+  if (write_data == NULL) {
+    return NULL;
+  }
+
+
+
+
+
+  /* compute _do function */
+  aubio_sink_do_multi (self->o, write_data, write);
+  Py_RETURN_NONE;
+}
+
 AUBIO_MEMBERS_START(sink)
   {"uri", T_STRING, offsetof (Py_sink, uri), READONLY, ""},
   {"samplerate", T_INT, offsetof (Py_sink, samplerate), READONLY, ""},
+  {"channels", T_INT, offsetof (Py_sink, channels), READONLY, ""},
 AUBIO_MEMBERS_STOP(sink)
 
 static PyObject *
@@ -97,8 +160,20 @@
 }
 
 static PyMethodDef Py_sink_methods[] = {
-  {"close", (PyCFunction) Pyaubio_sink_close,
-    METH_NOARGS, ""},
+  {"__call__", (PyCFunction) Py_sink_do, METH_VARARGS,
+    "x.__call__(vec, write)\n"
+    "write monophonic vector to sink"
+    ""},
+  {"do", (PyCFunction) Py_sink_do, METH_VARARGS,
+    "x.do(vec, write)\n"
+    "write monophonic vector to sink"
+    ""},
+  {"do_multi", (PyCFunction) Py_sink_do_multi, METH_VARARGS,
+    "x.do_multi(mat, write)\n"
+    "write polyphonic vector to sink"},
+  {"close", (PyCFunction) Pyaubio_sink_close, METH_NOARGS,
+    "x.close()\n"
+    "close this sink now"},
   {NULL} /* sentinel */
 };
 
-- 
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