colorchord/OutputProminent.c
2015-04-01 00:21:01 -04:00

91 lines
2 KiB
C

//Really basic driver, that just selects the most prominent color and washes all the LEDs with that.
#include "outdrivers.h"
#include "notefinder.h"
#include <stdio.h>
#include <string.h>
#include "parameters.h"
#include <stdlib.h>
#include "color.h"
#include <stdlib.h>
#include <math.h>
#include <unistd.h>
struct ProminentDriver
{
int did_init;
int total_leds;
float satamp;
};
static void LEDUpdate(void * id, struct NoteFinder*nf)
{
struct ProminentDriver * led = (struct ProminentDriver*)id;
//Step 1: Calculate the quantity of all the LEDs we'll want.
int totbins = nf->note_peaks;//nf->dists;
int i;
float selected_amp = 0;
float selected_note = 0;
// if( totbins > led_bins ) totbins = led_bins;
for( i = 0; i < totbins; i++ )
{
float freq = nf->note_positions[i] / nf->freqbins;
float amp = nf->note_amplitudes2[i] * led->satamp;
if( amp > selected_amp )
{
selected_amp = amp;
selected_note = freq;
}
}
//Advance the LEDs to this position when outputting the values.
for( i = 0; i < led->total_leds; i++ )
{
float sendsat = selected_amp;
if( sendsat > 1 ) sendsat = 1;
int r = CCtoHEX( selected_note, 1.0, sendsat );
OutLEDs[i*3+0] = r & 0xff;
OutLEDs[i*3+1] = (r>>8) & 0xff;
OutLEDs[i*3+2] = (r>>16) & 0xff;
}
}
static void LEDParams(void * id )
{
struct ProminentDriver * led = (struct ProminentDriver*)id;
led->satamp = 2; RegisterValue( "satamp", PAFLOAT, &led->satamp, sizeof( led->satamp ) );
led->total_leds = 4; RegisterValue( "leds", PAINT, &led->total_leds, sizeof( led->total_leds ) );
printf( "Found Prominent for output. leds=%d\n", led->total_leds );
}
static struct DriverInstances * OutputProminent()
{
struct DriverInstances * ret = malloc( sizeof( struct DriverInstances ) );
memset( ret, 0, sizeof( struct DriverInstances ) );
struct ProminentDriver * led = ret->id = malloc( sizeof( struct ProminentDriver ) );
memset( led, 0, sizeof( struct ProminentDriver ) );
ret->Func = LEDUpdate;
ret->Params = LEDParams;
LEDParams( led );
return ret;
}
REGISTER_OUT_DRIVER(OutputProminent);