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Mixer/DPM: Quick hack to add smoothing to meter values.

This commit is contained in:
Jonathan Moore Liles 2020-10-19 18:20:27 -07:00
parent dd274db49b
commit 830823a226
3 changed files with 33 additions and 2 deletions
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26
mixer/src/DPM.C
View File

@ -71,6 +71,14 @@ DPM::DPM ( int X, int Y, int W, int H, const char *L ) :
DPM::blend( 6, breaks, cols, color() );
}
{
smoothing.cutoff(25);
smoothing.sample_rate(1500);
/* clear initial hump */
sample_t t[1500];
smoothing.apply(t,1500,-70);
}
resize( X,Y,W,H);
}
@ -86,7 +94,7 @@ DPM::draw_label ( void )
if ( parent()->child( 0 ) == this )
{
fl_font( FL_TIMES, 8 );
fl_color( FL_WHITE );
fl_color( FL_FOREGROUND_COLOR );
/* draw marks */
char pat[5];
if ( type() == FL_HORIZONTAL )
@ -238,7 +246,7 @@ DPM::draw ( void )
/* if ( _pixels_per_segment >= 3 ) */
/* { */
/* fl_color( FL_DARK1 ); */
/* fl_color( FL_CYAN ); */
/* if ( type() == FL_HORIZONTAL ) */
/* { */
@ -260,5 +268,19 @@ DPM::draw ( void )
/* } */
}
/* fl_color( fl_color_add_alpha( FL_WHITE, 127 ) ); */
/* for ( int i = 0; i < 50; i++ ) */
/* { */
/* int yy = Y + i * H / 50; */
/* if ( type() == FL_VERTICAL ) */
/* { */
/* int ww = i % 2 == 0 ? W : W / 2; */
/* fl_line( X + ((W/2) - ww/2), yy, X + ww - 1, yy ); */
/* } */
/* } */
fl_pop_clip();
}

8
mixer/src/DPM.H
View File

@ -22,6 +22,7 @@
#include <FL/Fl_Valuator.H> // for FL_HORIZONTAL and FL_VERTICAL
#include "Meter.H"
#include "dsp.h"
class DPM : public Meter
{
@ -31,6 +32,8 @@ class DPM : public Meter
int _pixels_per_segment;
int _last_drawn_hi_segment;
Value_Smoothing_Filter smoothing;
float _value;
int pos ( float v )
@ -71,6 +74,11 @@ public:
void value ( float v )
{
sample_t buf[100];
if ( smoothing.apply( buf, 1, v ) )
v = buf[0];
if ( _value != v )
{
if ( pos( v ) != pos( _value ) )

1
nonlib/dsp.C
View File

@ -237,6 +237,7 @@ Value_Smoothing_Filter::sample_rate ( nframes_t n )
w = _cutoff / (FS * T);
}
/* FIXME: need a method that just returns a single value, skipping the within-buffer interpolation */
bool
Value_Smoothing_Filter::apply( sample_t * __restrict__ dst, nframes_t nframes, float gt )
{