Changeset 4615886a

Timestamp:

Jul 10, 2015, 2:08:22 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:

665b711

Parents:

5a7e2c3

Message:

ext/py-musicutils.c: add db_spl

Location:

python

Files:

• ext/aubiomodule.c (modified) (1 diff)
• ext/py-musicutils.c (modified) (1 diff)
• tests/test_musicutils.py (modified) (2 diffs)

python/ext/aubiomodule.c

@@ -242 +242 @@
   {"min_removal", Py_min_removal, METH_VARARGS, Py_min_removal_doc},
   {"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},
   {"window", Py_aubio_window, METH_VARARGS, Py_aubio_window_doc},
   {NULL, NULL} /* Sentinel */

python/ext/py-musicutils.c

@@ -51 +51 @@
   return level_lin;
 }
+
+PyObject *
+Py_aubio_db_spl(PyObject *self, PyObject *args)
+{
+  PyObject *input;
+  fvec_t *vec;
+  PyObject *db_spl;
+
+  if (!PyArg_ParseTuple (args, "O:db_spl", &input)) {
+    PyErr_SetString (PyExc_ValueError, "failed parsing arguments");
+    return NULL;
+  }
+
+  if (input == NULL) {
+    return NULL;
+  }
+
+  vec = PyAubio_ArrayToCFvec (input);
+  if (vec == NULL) {
+    return NULL;
+  }
+
+  db_spl = Py_BuildValue("f", aubio_db_spl(vec));
+  if (db_spl == NULL) {
+    PyErr_SetString (PyExc_ValueError, "failed computing db_spl");
+    return NULL;
+  }
+
+  return db_spl;
+}

python/tests/test_musicutils.py

@@ -6 +6 @@
 from math import pi
 
-from aubio import window, level_lin
+from aubio import window, level_lin, db_spl
 
 from aubio import fvec
@@ -56 +56 @@
         assert_equal(level_lin(-ones(1024, dtype="float32")), 1.)
 
+class aubio_db_spl(TestCase):
+    def test_accept_fvec(self):
+        db_spl(fvec(1024))
+
+    def test_fail_not_fvec(self):
+        try:
+            db_spl("default")
+        except ValueError, e:
+            pass
+        else:
+            self.fail('non-number input phase does not raise a TypeError')
+
+    def test_zeros_is_inf(self):
+        from math import isinf
+        assert isinf(db_spl(fvec(1024)))
+
+    def test_minus_ones_is_zero(self):
+        from numpy import ones
+        assert_equal(db_spl(-ones(1024, dtype="float32")), 0.)
+
 if __name__ == '__main__':
     from unittest import main