Add in tree aubio

Signed-off-by: falkTX <falktx@falktx.com>

deps/aubio/src/pitch/pitchyin.h

@@ -0,0 +1,100 @@
+/*
+  Copyright (C) 2003-2013 Paul Brossier <piem@aubio.org>
+
+  This file is part of aubio.
+
+  aubio is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  aubio is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with aubio.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+/** \file
+
+  Pitch detection using the YIN algorithm
+
+  This algorithm was developed by A. de Cheveigne and H. Kawahara and
+  published in:
+
+  De Cheveigné, A., Kawahara, H. (2002) "YIN, a fundamental frequency
+  estimator for speech and music", J. Acoust. Soc. Am. 111, 1917-1930.
+
+  see http://recherche.ircam.fr/equipes/pcm/pub/people/cheveign.html
+      http://recherche.ircam.fr/equipes/pcm/cheveign/ps/2002_JASA_YIN_proof.pdf
+
+  \example pitch/test-pitchyin.c
+
+*/
+
+#ifndef AUBIO_PITCHYIN_H
+#define AUBIO_PITCHYIN_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** pitch detection object */
+typedef struct _aubio_pitchyin_t aubio_pitchyin_t;
+
+/** creation of the pitch detection object
+
+  \param buf_size size of the input buffer to analyse
+
+*/
+aubio_pitchyin_t *new_aubio_pitchyin (uint_t buf_size);
+
+/** deletion of the pitch detection object
+
+  \param o pitch detection object as returned by new_aubio_pitchyin()
+
+*/
+void del_aubio_pitchyin (aubio_pitchyin_t * o);
+
+/** execute pitch detection an input buffer
+
+  \param o pitch detection object as returned by new_aubio_pitchyin()
+  \param samples_in input signal vector (length as specified at creation time)
+  \param cands_out pitch period candidates, in samples
+
+*/
+void aubio_pitchyin_do (aubio_pitchyin_t * o, const fvec_t * samples_in, fvec_t * cands_out);
+
+
+/** set tolerance parameter for YIN algorithm
+
+  \param o YIN pitch detection object
+  \param tol tolerance parameter for minima selection [default 0.15]
+
+*/
+uint_t aubio_pitchyin_set_tolerance (aubio_pitchyin_t * o, smpl_t tol);
+
+/** get tolerance parameter for YIN algorithm
+
+  \param o YIN pitch detection object
+  \return tolerance parameter for minima selection [default 0.15]
+
+*/
+smpl_t aubio_pitchyin_get_tolerance (aubio_pitchyin_t * o);
+
+/** get current confidence of YIN algorithm
+
+  \param o YIN pitch detection object
+  \return confidence parameter
+
+*/
+smpl_t aubio_pitchyin_get_confidence (aubio_pitchyin_t * o);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* AUBIO_PITCHYIN_H */