Add in tree aubio

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

deps/aubio/src/pitch/pitchyinfft.h

@@ -0,0 +1,99 @@
+/*
+  Copyright (C) 2003-2015 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 a spectral implementation of the YIN algorithm
+
+  This algorithm was derived from the YIN algorithm. In this implementation, a
+  Fourier transform is used to compute a tapered square difference function,
+  which allows spectral weighting. Because the difference function is tapered,
+  the selection of the period is simplified.
+
+  Paul Brossier, [Automatic annotation of musical audio for interactive
+  systems](http://aubio.org/phd/), Chapter 3, Pitch Analysis, PhD thesis,
+  Centre for Digital music, Queen Mary University of London, London, UK, 2006.
+
+  \example pitch/test-pitchyinfft.c
+
+*/
+
+#ifndef AUBIO_PITCHYINFFT_H
+#define AUBIO_PITCHYINFFT_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** pitch detection object */
+typedef struct _aubio_pitchyinfft_t aubio_pitchyinfft_t;
+
+/** execute pitch detection on an input buffer
+
+  \param o pitch detection object as returned by new_aubio_pitchyinfft
+  \param samples_in input signal vector (length as specified at creation time)
+  \param cands_out pitch period candidates, in samples
+
+*/
+void aubio_pitchyinfft_do (aubio_pitchyinfft_t * o, const fvec_t * samples_in, fvec_t * cands_out);
+/** creation of the pitch detection object
+
+  \param samplerate samplerate of the input signal
+  \param buf_size size of the input buffer to analyse
+
+*/
+aubio_pitchyinfft_t *new_aubio_pitchyinfft (uint_t samplerate, uint_t buf_size);
+/** deletion of the pitch detection object
+
+  \param o pitch detection object as returned by new_aubio_pitchyinfft()
+
+*/
+void del_aubio_pitchyinfft (aubio_pitchyinfft_t * o);
+
+/** get tolerance parameter for YIN algorithm
+
+  \param o YIN pitch detection object
+
+  \return tolerance parameter for minima selection [default 0.15]
+
+*/
+smpl_t aubio_pitchyinfft_get_tolerance (aubio_pitchyinfft_t * o);
+
+/** 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_pitchyinfft_set_tolerance (aubio_pitchyinfft_t * o, smpl_t tol);
+
+/** get current confidence of YIN algorithm
+
+  \param o YIN pitch detection object
+  \return confidence parameter
+
+*/
+smpl_t aubio_pitchyinfft_get_confidence (aubio_pitchyinfft_t * o);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* AUBIO_PITCHYINFFT_H */