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Diffstat (limited to 'audio/filter/filter.h')
-rw-r--r-- | audio/filter/filter.h | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/audio/filter/filter.h b/audio/filter/filter.h deleted file mode 100644 index 8a1864a940..0000000000 --- a/audio/filter/filter.h +++ /dev/null @@ -1,74 +0,0 @@ -/* - * Copyright (C) 2001 Anders Johansson ajh@atri.curtin.edu.au - * - * This file is part of mpv. - * - * mpv 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. - * - * mpv 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 mpv. If not, see <http://www.gnu.org/licenses/>. - */ - -#if !defined MPLAYER_DSP_H -# error Never use filter.h directly; include dsp.h instead. -#endif - -#ifndef MPLAYER_FILTER_H -#define MPLAYER_FILTER_H - - -// Design and implementation of different types of digital filters - - -// Flags used for filter design - -// Filter characteristics -#define LP 0x00010000 // Low pass -#define HP 0x00020000 // High pass -#define BP 0x00040000 // Band pass -#define BS 0x00080000 // Band stop -#define TYPE_MASK 0x000F0000 - -// Window types -#define BOXCAR 0x00000001 -#define TRIANG 0x00000002 -#define HAMMING 0x00000004 -#define HANNING 0x00000008 -#define BLACKMAN 0x00000010 -#define FLATTOP 0x00000011 -#define KAISER 0x00000012 -#define WINDOW_MASK 0x0000001F - -// Parallel filter design -#define FWD 0x00000001 // Forward indexing of polyphase filter -#define REW 0x00000002 // Reverse indexing of polyphase filter -#define ODD 0x00000010 // Make filter HP - -// Exported functions -FLOAT_TYPE af_filter_fir(unsigned int n, const FLOAT_TYPE* w, const FLOAT_TYPE* x); - -int af_filter_design_fir(unsigned int n, FLOAT_TYPE* w, const FLOAT_TYPE* fc, - unsigned int flags, FLOAT_TYPE opt); - -int af_filter_szxform(const FLOAT_TYPE* a, const FLOAT_TYPE* b, FLOAT_TYPE Q, - FLOAT_TYPE fc, FLOAT_TYPE fs, FLOAT_TYPE *k, - FLOAT_TYPE *coef); - -/* Add new data to circular queue designed to be used with a FIR - filter. xq is the circular queue, in pointing at the new sample, xi - current index for xq and n the length of the filter. xq must be n*2 - long. -*/ -#define af_filter_updateq(n,xi,xq,in)\ - xq[xi]=(xq)[(xi)+(n)]=*(in);\ - xi=(++(xi))&((n)-1); - -#endif /* MPLAYER_FILTER_H */ |