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authoranders <anders@b3059339-0415-0410-9bf9-f77b7e298cf2>2003-01-07 10:33:30 +0000
committeranders <anders@b3059339-0415-0410-9bf9-f77b7e298cf2>2003-01-07 10:33:30 +0000
commit4477f1232a19ef0ed1c3944b39a2f0aaca45fddc (patch)
treedbc25d1ac2429e821279cdd916eb356f639b845f /libaf/filter.h
parent850c82cf304928017b5c70f909fb6c226b997572 (diff)
downloadmpv-4477f1232a19ef0ed1c3944b39a2f0aaca45fddc.tar.bz2
mpv-4477f1232a19ef0ed1c3944b39a2f0aaca45fddc.tar.xz
Adding sub-woofer filter, use this filter to add a sub channel to the audio stream
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@8833 b3059339-0415-0410-9bf9-f77b7e298cf2
Diffstat (limited to 'libaf/filter.h')
-rw-r--r--libaf/filter.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/libaf/filter.h b/libaf/filter.h
index f36bc0bf2f..307760d856 100644
--- a/libaf/filter.h
+++ b/libaf/filter.h
@@ -45,14 +45,18 @@
// Exported functions
extern _ftype_t fir(unsigned int n, _ftype_t* w, _ftype_t* x);
+
extern _ftype_t* pfir(unsigned int n, unsigned int k, unsigned int xi, _ftype_t** w, _ftype_t** x, _ftype_t* y, unsigned int s);
extern int updateq(unsigned int n, unsigned int xi, _ftype_t* xq, _ftype_t* in);
extern int updatepq(unsigned int n, unsigned int k, unsigned int xi, _ftype_t** xq, _ftype_t* in, unsigned int s);
extern int design_fir(unsigned int n, _ftype_t* w, _ftype_t* fc, unsigned int flags, _ftype_t opt);
+
extern int design_pfir(unsigned int n, unsigned int k, _ftype_t* w, _ftype_t** pw, _ftype_t g, unsigned int flags);
+extern int szxform(_ftype_t* a, _ftype_t* b, _ftype_t Q, _ftype_t fc, _ftype_t fs, _ftype_t *k, _ftype_t *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