3 * Copyright (C) 2006 Josep Torra <j.torra@telefonica.net>
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 * Boston, MA 02111-1307, USA.
21 #ifndef __GST_PITCH_H__
22 #define __GST_PITCH_H__
25 #include <gst/base/gstadapter.h>
26 #include <gst/base/gstbasetransform.h>
31 #define GST_TYPE_PITCH \
32 (gst_pitch_get_type())
33 #define GST_PITCH(obj) \
34 (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PITCH,GstPitch))
35 #define GST_PITCH_CLASS(klass) \
36 (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PITCH,GstPitchClass))
37 #define GST_IS_PLUGIN_TEMPLATE(obj) \
38 (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PITCH))
39 #define GST_IS_PLUGIN_TEMPLATE_CLASS(klass) \
40 (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PITCH))
41 typedef struct _GstPitch GstPitch;
42 typedef struct _GstPitchClass GstPitchClass;
46 * @GST_PITCH_ALGORITHM_FFT: simple FFT
47 * @GST_PITCH_ALGORITHM_HPS: Harmonic Product Spectrum
49 * Pitch detection algorithm.
53 GST_PITCH_ALGORITHM_FFT,
54 GST_PITCH_ALGORITHM_HPS
59 GstBaseTransform element;
61 GstPad *sinkpad, *srcpad;
65 gboolean message; /* whether or not to post messages */
66 gint minfreq; /* initial frequency on scan for fundamental frequency */
67 gint maxfreq; /* final frequency on scan for fundamental frequency */
68 GstPitchAlgorithm algorithm; /* current pitch detection algorithm */
72 kiss_fft_cpx *spectrum;
80 GstBaseTransformClass parent_class;
83 GType gst_pitch_get_type (void);
86 #endif /* __GST_PITCH_H__ */