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 #include <glib.h> 21 #include <math.h> 22 #include <gst/gst.h> 23 24 #ifndef __GST_FFT_H__ 25 #define __GST_FFT_H__ 26 27 #include <gst/fft/fft-prelude.h> 28 29 G_BEGIN_DECLS 30 31 /** 32 * GstFFTWindow: 33 * @GST_FFT_WINDOW_RECTANGULAR: Rectangular window 34 * @GST_FFT_WINDOW_HAMMING: Hamming window 35 * @GST_FFT_WINDOW_HANN: Hann (sometimes also called Hanning) window 36 * @GST_FFT_WINDOW_BARTLETT: Bartlett window 37 * @GST_FFT_WINDOW_BLACKMAN: Blackman window 38 * 39 * The various window functions available. 40 */ 41 typedef enum 42 { 43 GST_FFT_WINDOW_RECTANGULAR, 44 GST_FFT_WINDOW_HAMMING, 45 GST_FFT_WINDOW_HANN, 46 GST_FFT_WINDOW_BARTLETT, 47 GST_FFT_WINDOW_BLACKMAN 48 } GstFFTWindow; 49 50 /* Functions */ 51 52 GST_FFT_API 53 gint gst_fft_next_fast_length (gint n) G_GNUC_CONST; 54 55 G_END_DECLS 56 57 #endif /* __GST_FFT_H__ */ 58