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., 59 Temple Place - Suite 330,

    17  * Boston, MA 02111-1307, USA.

    18  */

    19 

    20 #include <glib.h>

    21 #include <math.h>

    22 

    23 #ifndef __GST_FFT_H__

    24 #define __GST_FFT_H__

    25 

    26 /**

    27  * GstFFTWindow:

    28  * @GST_FFT_WINDOW_RECTANGULAR: Rectangular window

    29  * @GST_FFT_WINDOW_HAMMING: Hamming window

    30  * @GST_FFT_WINDOW_HANN: Hann (sometimes also called Hanning) window

    31  * @GST_FFT_WINDOW_BARTLETT: Bartlett window

    32  * @GST_FFT_WINDOW_BLACKMAN: Blackman window

    33  *

    34  * The various window functions available.

    35  */

    36 typedef enum

    37 {

    38   GST_FFT_WINDOW_RECTANGULAR,

    39   GST_FFT_WINDOW_HAMMING,

    40   GST_FFT_WINDOW_HANN,

    41   GST_FFT_WINDOW_BARTLETT,

    42   GST_FFT_WINDOW_BLACKMAN

    43 } GstFFTWindow;

    44 

    45 /* Functions */

    46 #ifdef __SYMBIAN32__

    47 IMPORT_C

    48 #endif

    49 

    50 

    51 gint gst_fft_next_fast_length (gint n);

    52 

    53 #endif /* __GST_FFT_H__ */