From 017d2d27bfbcd97ada407212e925b280ff3482b5 Mon Sep 17 00:00:00 2001 From: trialuser02 Date: Tue, 11 Aug 2015 09:08:12 +0000 Subject: added qsui plugin git-svn-id: http://svn.code.sf.net/p/qmmp-dev/code/trunk/qmmp@5367 90c681e8-e032-0410-971d-27865f9a5e38 --- src/plugins/Ui/qsui/fft.h | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 src/plugins/Ui/qsui/fft.h (limited to 'src/plugins/Ui/qsui/fft.h') diff --git a/src/plugins/Ui/qsui/fft.h b/src/plugins/Ui/qsui/fft.h new file mode 100644 index 000000000..915bccaf6 --- /dev/null +++ b/src/plugins/Ui/qsui/fft.h @@ -0,0 +1,45 @@ +/* fft.h: Header for iterative implementation of a FFT + * Copyright (C) 1999 Richard Boulton + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#ifndef _FFT_H_ +#define _FFT_H_ + +#define FFT_BUFFER_SIZE_LOG 9 + +#define FFT_BUFFER_SIZE (1 << FFT_BUFFER_SIZE_LOG) + +/* sound sample - should be an signed 16 bit value */ +typedef short int sound_sample; + +#ifdef __cplusplus +extern "C" { +#endif + +/* FFT library */ + typedef struct _struct_fft_state fft_state; + fft_state *fft_init(void); + void fft_perform(const sound_sample * input, float *output, + fft_state * state); + void fft_close(fft_state * state); + + + +#ifdef __cplusplus +} +#endif +#endif /* _FFT_H_ */ -- cgit v1.2.3-13-gbd6f