Add a USB WS2812 Driver
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cnlohr
parent
17aef1eab6
commit
d5c518ec0a
166
DisplayUSB2812.c
Normal file
166
DisplayUSB2812.c
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#include "outdrivers.h"
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#include "notefinder.h"
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#include <stdio.h>
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#include <string.h>
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#include "parameters.h"
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#include <stdlib.h>
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#include <libusb-1.0/libusb.h>
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#include "color.h"
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#include <math.h>
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#include <unistd.h>
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struct LEDOutDriver
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{
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struct libusb_device_handle *devh;
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int did_init;
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int zigzag;
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int total_leds;
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int array;
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float outamp;
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uint8_t * last_leds;
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volatile int readyFlag;
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int xn;
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int yn;
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int rot90;
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};
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static void * LEDOutThread( void * v )
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{
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struct LEDOutDriver * led = (struct LEDOutDriver*)v;
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while(1)
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{
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if( led->readyFlag )
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{
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int r = libusb_control_transfer( led->devh,
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0x40, //reqtype
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0xA5, //request
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0x0100, //wValue
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0x0000, //wIndex
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led->last_leds,
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(led->total_leds*3)+1,
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1000 );
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if( r < 0 )
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{
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led->did_init = 0;
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printf( "Fault sending LEDs.\n" );
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}
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led->readyFlag = 0;
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}
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usleep(100);
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}
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return 0;
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}
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static void LEDUpdate(void * id, struct NoteFinder*nf)
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{
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int i;
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struct LEDOutDriver * led = (struct LEDOutDriver*)id;
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if( !led->did_init )
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{
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led->did_init = 1;
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if( libusb_init(NULL) < 0 )
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{
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fprintf( stderr, "Error: Could not initialize libUSB\n" );
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exit( -99 );
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}
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led->devh = libusb_open_device_with_vid_pid( NULL, 0xabcd, 0xf003 );
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if( !led->devh )
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{
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fprintf( stderr, "Error: Cannot find device.\n" );
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exit( -98 );
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}
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}
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while( led->readyFlag ) usleep(100);
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//Advance the LEDs to this position when outputting the values.
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for( i = 0; i < led->total_leds; i++ )
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{
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int source = i;
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if( !led->array )
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{
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int sx, sy;
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if( led->rot90 )
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{
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sy = i % led->yn;
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sx = i / led->yn;
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}
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else
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{
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sx = i % led->xn;
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sy = i / led->xn;
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}
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if( led->zigzag )
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{
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if( led->rot90 )
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{
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if( sx & 1 )
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{
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sy = led->yn - sy - 1;
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}
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}
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else
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{
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if( sy & 1 )
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{
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sx = led->xn - sx - 1;
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}
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}
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}
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if( led->rot90 )
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{
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source = sx + sy * led->xn;
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}
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else
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{
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source = sx + sy * led->yn;
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}
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}
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led->last_leds[i*3+0] = OutLEDs[source*3+0] * led->outamp;
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led->last_leds[i*3+2] = OutLEDs[source*3+1] * led->outamp;
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led->last_leds[i*3+1] = OutLEDs[source*3+2] * led->outamp;
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}
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led->readyFlag = 1;
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}
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static void LEDParams(void * id )
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{
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struct LEDOutDriver * led = (struct LEDOutDriver*)id;
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led->total_leds = GetParameterI( "leds", 300 );
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led->last_leds = malloc( led->total_leds * 3 + 1 );
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led->outamp = .1; RegisterValue( "ledoutamp", PAFLOAT, &led->outamp, sizeof( led->outamp ) );
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led->zigzag = 0; RegisterValue( "zigzag", PAINT, &led->zigzag, sizeof( led->zigzag ) );
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led->xn = 16; RegisterValue( "lightx", PAINT, &led->xn, sizeof( led->xn ) );
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led->yn = 9; RegisterValue( "lighty", PAINT, &led->yn, sizeof( led->yn ) );
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led->rot90 = 0; RegisterValue( "rot90", PAINT, &led->rot90, sizeof( led->rot90 ) );
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led->array = 0; RegisterValue( "ledarray", PAINT, &led->array, sizeof( led->array ) );
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led->did_init = 0;
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}
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static struct DriverInstances * DisplayUSB2812()
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{
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struct DriverInstances * ret = malloc( sizeof( struct DriverInstances ) );
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memset( ret, 0, sizeof( struct DriverInstances ) );
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struct LEDOutDriver * led = ret->id = malloc( sizeof( struct LEDOutDriver ) );
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ret->Func = LEDUpdate;
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ret->Params = LEDParams;
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OGCreateThread( LEDOutThread, led );
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led->readyFlag = 0;
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LEDParams( led );
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return ret;
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}
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REGISTER_OUT_DRIVER(DisplayUSB2812);
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197
LEDOUTDriver.c
197
LEDOUTDriver.c
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@ -1,197 +0,0 @@
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#include "outdrivers.h"
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#include "notefinder.h"
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#include <stdio.h>
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#include <string.h>
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#include "parameters.h"
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#include <stdlib.h>
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#include <libusb-1.0/libusb.h>
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#include "color.h"
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#include <math.h>
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#include <unistd.h>
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struct LEDOutDriver
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{
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struct libusb_device_handle *devh;
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int did_init;
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int total_leds;
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float light_siding;
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float * last_led_pos;
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float * last_led_amp;
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float led_floor;
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int led_bins;
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float ampoff;
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uint8_t * last_leds;
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volatile int readyFlag;
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};
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static void * LEDOutThread( void * v )
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{
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struct LEDOutDriver * led = (struct LEDOutDriver*)v;
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while(1)
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{
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if( led->readyFlag )
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{
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int r = libusb_control_transfer( led->devh,
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0x40, //reqtype
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0xA5, //request
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0x0100, //wValue
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0x0000, //wIndex
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led->last_leds,
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(led->total_leds*3)+1,
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1000 );
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if( r < 0 ) led->did_init = 0;
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led->readyFlag = 0;
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}
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usleep(100);
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}
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return 0;
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}
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static void LEDUpdate(void * id, struct NoteFinder*nf)
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{
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struct LEDOutDriver * led = (struct LEDOutDriver*)id;
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if( !led->did_init )
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{
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led->did_init = 1;
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if( libusb_init(NULL) < 0 )
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{
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fprintf( stderr, "Error: Could not initialize libUSB\n" );
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exit( -99 );
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}
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led->devh = libusb_open_device_with_vid_pid( NULL, 0xabcd, 0xf003 );
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if( !led->devh )
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{
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fprintf( stderr, "Error: Cannot find device.\n" );
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exit( -98 );
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}
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}
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//Step 1: Calculate the quantity of all the LEDs we'll want.
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int totbins = nf->dists;
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int i, j;
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float binvals[totbins];
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float binpos[totbins];
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float totalbinval = 0;
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// if( totbins > led_bins ) totbins = led_bins;
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for( i = 0; i < totbins; i++ )
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{
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binpos[i] = nf->note_positions[i] / nf->freqbins;
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binvals[i] = pow( nf->note_amplitudes[i], led->light_siding );
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totalbinval += binvals[i];
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}
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float rledpos[led->total_leds];
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float rledamp[led->total_leds];
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int rbinout = 0;
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for( i = 0; i < totbins; i++ )
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{
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int nrleds = (int)((binvals[i] / totalbinval) * led->total_leds);
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if( nrleds < 40 ) nrleds = 0;
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for( j = 0; j < nrleds && rbinout < led->total_leds; j++ )
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{
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rledpos[rbinout] = binpos[i];
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rledamp[rbinout] = binvals[i];
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rbinout++;
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}
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}
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for( ; rbinout < led->total_leds; rbinout++ )
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{
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rledpos[rbinout] = rledpos[rbinout-1];
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rledamp[rbinout] = rledamp[rbinout-1];
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}
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//Now we have to minimize "advance".
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int minadvance = 0;
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// float mindiff = 1e20;
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/*
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//Uncomment this for a rotationally continuous surface.
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for( i = 0; i < total_leds; i++ )
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{
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float diff = 0;
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diff = 0;
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for( j = 0; j < total_leds; j+=4 )
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{
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int r = (j + i) % total_leds;
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diff += (last_led_pos[j] - rledpos[r])*(last_led_pos[j] - rledpos[r]);
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}
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if( diff < mindiff )
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{
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mindiff = diff;
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minadvance = i;
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}
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}
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*/
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// printf( "MA: %d %f\n", minadvance, mindiff );
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while( led->readyFlag ) usleep(100);
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//Advance the LEDs to this position when outputting the values.
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for( i = 0; i < led->total_leds; i++ )
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{
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int ia = ( i + minadvance + led->total_leds ) % led->total_leds;
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led->last_led_pos[i] = rledpos[ia];
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led->last_led_amp[i] = rledamp[ia] * led->ampoff;
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int r = CCtoHEX( led->last_led_pos[i], 1.0, led->last_led_amp[i] );
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led->last_leds[i*3+0] = (r>>8) & 0xff;
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led->last_leds[i*3+1] = r & 0xff;
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led->last_leds[i*3+2] = (r>>16) & 0xff;
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}
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led->readyFlag = 1;
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}
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static void LEDParams(void * id )
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{
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struct LEDOutDriver * led = (struct LEDOutDriver*)id;
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led->total_leds = GetParameterI( "leds", 300 );
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led->ampoff = GetParameterF( "amp", 1.0 );
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led->light_siding = GetParameterF( "light_siding", 1.4 );
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printf( "Found LEDs for output. leds=%d\n", led->total_leds );
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if( led->last_led_pos ) free( led->last_led_pos );
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led->last_led_pos = malloc( sizeof( float ) * led->total_leds );
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if( led->last_led_amp ) free( led->last_led_amp );
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led->last_led_amp = malloc( sizeof( float ) * led->total_leds );
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led->led_floor = GetParameterF( "led_floor", .1 );
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led->led_bins = GetParameterF( "led_bins", 12 );
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if( led->last_leds ) free( led->last_leds );
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led->last_leds = malloc( led->total_leds * 3 );
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}
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static struct DriverInstances * LEDOutDriver()
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{
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struct DriverInstances * ret = malloc( sizeof( struct DriverInstances ) );
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memset( ret, 0, sizeof( struct DriverInstances ) );
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struct LEDOutDriver * led = ret->id = malloc( sizeof( struct LEDOutDriver ) );
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ret->Func = LEDUpdate;
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ret->Params = LEDParams;
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OGCreateThread( LEDOutThread, led );
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led->readyFlag = 0;
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LEDParams( led );
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return ret;
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}
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REGISTER_OUT_DRIVER(LEDOutDriver);
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