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Cut the files in half and it might work better (note to self: check your tree is really clean before patching)

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21070 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Peter D'Hoye 2009-05-24 21:28:16 +00:00
parent 4f2dfcc01b
commit 526b5580da
192 changed files with 20 additions and 69133 deletions
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94
apps/plugins/pdbox/PDa/extra/equalizer.c
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@ -83,96 +83,4 @@ void equalizer_setup(void)
class_addfloat(equ_class,equ_float);
}
/* (C) Guenter Geiger <geiger@epy.co.at> */
/*
These filter coefficients computations are taken from
http://www.harmony-central.com/Computer/Programming/Audio-EQ-Cookbook.txt
written by Robert Bristow-Johnson
*/
#include "m_pd.h"
#ifdef NT
#pragma warning( disable : 4244 )
#pragma warning( disable : 4305 )
#endif
#include <math.h>
#include "filters.h"
/* ------------------- equ ----------------------------*/
static t_class *equ_class;
void equ_bang(t_rbjfilter *x)
{
t_atom at[5];
t_float omega = e_omega(x->x_freq,x->x_rate);
t_float alpha = e_alpha(x->x_bw*0.01,omega);
t_float b0 = 1 + alpha*e_A(x->x_gain);
t_float b1 = -2.*cos(omega);
t_float b2 = 1 - alpha*e_A(x->x_gain);
t_float a0 = 1 + alpha/e_A(x->x_gain);
t_float a1 = -2.*cos(omega);
t_float a2 = 1 - alpha/e_A(x->x_gain);
/* post("bang %f %f %f",x->x_freq, x->x_gain, x->x_bw);*/
if (!check_stability(-a1/a0,-a2/a0,b0/a0,b1/a0,b2/a0)) {
post("equ: filter unstable -> resetting");
a0=1.;a1=0.;a2=0.;
b0=1.;b1=0.;b2=0.;
}
SETFLOAT(at,-a1/a0);
SETFLOAT(at+1,-a2/a0);
SETFLOAT(at+2,b0/a0);
SETFLOAT(at+3,b1/a0);
SETFLOAT(at+4,b2/a0);
outlet_list(x->x_obj.ob_outlet,&s_list,5,at);
}
void equ_float(t_rbjfilter *x,t_floatarg f)
{
x->x_freq = f;
equ_bang(x);
}
static void *equ_new(t_floatarg f,t_floatarg g,t_floatarg bw)
{
t_rbjfilter *x = (t_rbjfilter *)pd_new(equ_class);
x->x_rate = 44100.0;
outlet_new(&x->x_obj,&s_float);
floatinlet_new(&x->x_obj, &x->x_gain);
floatinlet_new(&x->x_obj, &x->x_bw);
if (f > 0.) x->x_freq = f;
if (bw > 0.) x->x_bw = bw;
if (g != 0.) x->x_gain = g;
return (x);
}
void equalizer_setup(void)
{
equ_class = class_new(gensym("equalizer"), (t_newmethod)equ_new, 0,
sizeof(t_rbjfilter), 0,A_DEFFLOAT,A_DEFFLOAT,A_DEFFLOAT,0);
class_addbang(equ_class,equ_bang);
class_addfloat(equ_class,equ_float);
}