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Diffstat (limited to 'audio/filter/window.h')
| -rw-r--r-- | audio/filter/window.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/audio/filter/window.h b/audio/filter/window.h new file mode 100644 index 0000000000..1c179b7902 --- /dev/null +++ b/audio/filter/window.h @@ -0,0 +1,43 @@ +/* + * Copyright (C) 2001 Anders Johansson ajh@atri.curtin.edu.au + * + * This file is part of MPlayer. + * + * MPlayer 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. + * + * MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +/* Calculates a number of window functions. The following window + functions are currently implemented: Boxcar, Triang, Hanning, + Hamming, Blackman, Flattop and Kaiser. In the function call n is + the number of filter taps and w the buffer in which the filter + coefficients will be stored. +*/ + +#if !defined MPLAYER_DSP_H +# error Never use window.h directly; include dsp.h instead. +#endif + +#ifndef MPLAYER_WINDOW_H +#define MPLAYER_WINDOW_H + +void af_window_boxcar(int n, FLOAT_TYPE* w); +void af_window_triang(int n, FLOAT_TYPE* w); +void af_window_hanning(int n, FLOAT_TYPE* w); +void af_window_hamming(int n, FLOAT_TYPE* w); +void af_window_blackman(int n, FLOAT_TYPE* w); +void af_window_flattop(int n, FLOAT_TYPE* w); +void af_window_kaiser(int n, FLOAT_TYPE* w, FLOAT_TYPE b); + +#endif /* MPLAYER_WINDOW_H */ |