Audacious
$Id:Doxyfile42802007-03-2104:39:00Znenolod$
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00001 /* Audacious - Cross-platform multimedia player 00002 * Copyright (C) 2005-2007 Audacious development team 00003 * 00004 * Copyright (C) 1999 Richard Boulton <richard@tartarus.org> 00005 * 00006 * This program is free software; you can redistribute it and/or modify 00007 * it under the terms of the GNU General Public License as published by 00008 * the Free Software Foundation; under version 3 of the License. 00009 * 00010 * This program is distributed in the hope that it will be useful, 00011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00013 * GNU General Public License for more details. 00014 * 00015 * You should have received a copy of the GNU General Public License 00016 * along with this program. If not, see <http://www.gnu.org/licenses>. 00017 * 00018 * The Audacious team does not consider modular code linking to 00019 * Audacious or using our public API to be a derived work. 00020 */ 00021 00022 /* fft.h: header for iterative implementation of a FFT */ 00023 00024 #ifndef AUDACIOUS_FFT_H 00025 #define AUDACIOUS_FFT_H 00026 00027 #include <glib.h> 00028 00029 #define FFT_BUFFER_SIZE_LOG 9 00030 #define FFT_BUFFER_SIZE (1 << FFT_BUFFER_SIZE_LOG) 00031 00032 /* sound sample - should be a signed 16 bit value */ 00033 typedef gint16 sound_sample; 00034 00035 typedef struct _struct_fft_state fft_state; 00036 fft_state *fft_init(void); 00037 void fft_perform(const sound_sample * input, float *output, fft_state * state); 00038 void fft_close(fft_state * state); 00039 00040 #endif /* AUDACIOUS_FFT_H */