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author | wm4 <wm4@nowhere> | 2012-11-05 17:02:04 +0100 |
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committer | wm4 <wm4@nowhere> | 2012-11-12 20:06:14 +0100 |
commit | d4bdd0473d6f43132257c9fb3848d829755167a3 (patch) | |
tree | 8021c2f7da1841393c8c832105e20cd527826d6c /audio/filter/filter.h | |
parent | bd48deba77bd5582c5829d6fe73a7d2571088aba (diff) | |
download | mpv-d4bdd0473d6f43132257c9fb3848d829755167a3.tar.bz2 mpv-d4bdd0473d6f43132257c9fb3848d829755167a3.tar.xz |
Rename directories, move files (step 1 of 2) (does not compile)
Tis drops the silly lib prefixes, and attempts to organize the tree in
a more logical way. Make the top-level directory less cluttered as
well.
Renames the following directories:
libaf -> audio/filter
libao2 -> audio/out
libvo -> video/out
libmpdemux -> demux
Split libmpcodecs:
vf* -> video/filter
vd*, dec_video.* -> video/decode
mp_image*, img_format*, ... -> video/
ad*, dec_audio.* -> audio/decode
libaf/format.* is moved to audio/ - this is similar to how mp_image.*
is located in video/.
Move most top-level .c/.h files to core. (talloc.c/.h is left on top-
level, because it's external.) Park some of the more annoying files
in compat/. Some of these are relicts from the time mplayer used
ffmpeg internals.
sub/ is not split, because it's too much of a mess (subtitle code is
mixed with OSD display and rendering).
Maybe the organization of core is not ideal: it mixes playback core
(like mplayer.c) and utility helpers (like bstr.c/h). Should the need
arise, the playback core will be moved somewhere else, while core
contains all helper and common code.
Diffstat (limited to 'audio/filter/filter.h')
-rw-r--r-- | audio/filter/filter.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/audio/filter/filter.h b/audio/filter/filter.h new file mode 100644 index 0000000000..aed33352c2 --- /dev/null +++ b/audio/filter/filter.h @@ -0,0 +1,75 @@ +/* + * 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. + */ + +#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 */ |