Changeset 31a09d2 for python/ext

Timestamp:

Jul 10, 2015, 2:26:27 AM (9 years ago)

Author:

Paul Brossier <piem@piem.org>

Branches:

feature/autosink, feature/cnn, feature/cnn_org, feature/constantq, feature/crepe, feature/crepe_org, feature/pitchshift, feature/pydocstrings, feature/timestretch, fix/ffmpeg5, master, pitchshift, sampler, timestretch, yinfft+

Children:

9c8c8a6

Parents:

665b711

Message:

ext/py-musicutils.c: add silence_detection

Location:

python/ext

Files:

• aubiomodule.c (modified) (1 diff)
• py-musicutils.c (modified) (1 diff)
• py-musicutils.h (modified) (1 diff)

python/ext/aubiomodule.c

@@ -243 +243 @@
   {"level_lin", Py_aubio_level_lin, METH_VARARGS, Py_aubio_level_lin_doc},
   {"db_spl", Py_aubio_db_spl, METH_VARARGS, Py_aubio_db_spl_doc},
+  {"silence_detection", Py_aubio_silence_detection, METH_VARARGS, Py_aubio_silence_detection_doc},
   {"window", Py_aubio_window, METH_VARARGS, Py_aubio_window_doc},
   {NULL, NULL} /* Sentinel */

python/ext/py-musicutils.c

@@ -81 +81 @@
   return db_spl;
 }
+
+PyObject *
+Py_aubio_silence_detection(PyObject *self, PyObject *args)
+{
+  PyObject *input;
+  fvec_t *vec;
+  PyObject *silence_detection;
+  smpl_t threshold;
+
+  if (!PyArg_ParseTuple (args, "Of:silence_detection", &input, &threshold)) {
+    PyErr_SetString (PyExc_ValueError, "failed parsing arguments");
+    return NULL;
+  }
+
+  if (input == NULL) {
+    return NULL;
+  }
+
+  vec = PyAubio_ArrayToCFvec (input);
+  if (vec == NULL) {
+    return NULL;
+  }
+
+  silence_detection = Py_BuildValue("I", aubio_silence_detection(vec, threshold));
+  if (silence_detection == NULL) {
+    PyErr_SetString (PyExc_ValueError, "failed computing silence_detection");
+    return NULL;
+  }
+
+  return silence_detection;
+}

python/ext/py-musicutils.h

@@ -46 +46 @@
 PyObject * Py_aubio_db_spl(PyObject *self, PyObject *args);
 
+static char Py_aubio_silence_detection_doc[] = ""
+"Check if buffer level in dB SPL is under a given threshold\n"
+"\n"
+"Return 0 if level is under the given threshold, 1 otherwise.\n"
+"\n"
+"Example\n"
+"-------\n"
+"\n"
+">>> import numpy\n"""
+">>> silence_detection(numpy.ones(1024, dtype=\"float32\"), -80)\n"
+"0";
+
+PyObject * Py_aubio_silence_detection(PyObject *self, PyObject *args);
+
 #endif /* _PY_AUBIO_MUSICUTILS_H_ */