1 /* GStreamer
2  * Copyright (C) <2007> Sebastian Dröge <slomo@circular-chaos.org>
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Library General Public
6  * License as published by the Free Software Foundation; either
7  * version 2 of the License, or (at your option) any later version.
8  *
9  * This library is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12  * Library General Public License for more details.
13  *
14  * You should have received a copy of the GNU Library General Public
15  * License along with this library; if not, write to the
16  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
17  * Boston, MA 02110-1301, USA.
18  */
19 
20 #ifndef __GST_FFT_F64_H__
21 #define __GST_FFT_F64_H__
22 
23 #include <glib.h>
24 #include <gst/gst.h>
25 
26 #include "gstfft.h"
27 
28 G_BEGIN_DECLS
29 
30 typedef struct _GstFFTF64 GstFFTF64;
31 typedef struct _GstFFTF64Complex GstFFTF64Complex;
32 
33 /* Copy of kiss_fft_f64_cpx for documentation reasons,
34  * do NOT change! */
35 
36 /**
37  * GstFFTF64Complex:
38  * @r: Real part
39  * @i: Imaginary part
40  *
41  * Data type for complex numbers composed of
42  * 64 bit float.
43  */
44 struct _GstFFTF64Complex
45 {
46   gdouble r;
47   gdouble i;
48 };
49 
50 /* Functions */
51 
52 GST_FFT_API
53 GstFFTF64 *     gst_fft_f64_new         (gint len, gboolean inverse);
54 
55 GST_FFT_API
56 void            gst_fft_f64_free        (GstFFTF64 *self);
57 
58 GST_FFT_API
59 void            gst_fft_f64_fft         (GstFFTF64 *self, const gdouble *timedata,
60                                          GstFFTF64Complex *freqdata);
61 
62 GST_FFT_API
63 void            gst_fft_f64_inverse_fft (GstFFTF64 *self, const GstFFTF64Complex *freqdata,
64                                          gdouble *timedata);
65 
66 GST_FFT_API
67 void            gst_fft_f64_window      (GstFFTF64 *self, gdouble *timedata, GstFFTWindow window);
68 
69 G_END_DECLS
70 
71 #endif /* __GST_FFT_F64_H__ */
72