colorchord/embeddedlinux/dummy_leds.c
2015-07-29 01:55:19 -04:00

111 lines
2.3 KiB
C

//Copyright (Public Domain) 2015 <>< Charles Lohr
//This file may be used in whole or part in any way for any purpose by anyone
//without restriction.
#include <ccconfig.h>
#include <X11/Xlib.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <pthread.h>
#include <stdio.h>
pthread_t pt;
Display *d;
Window w;
XEvent e;
int sockfd;
struct sockaddr_in servaddr;
int wid, hei;
uint8_t mesg[NUM_LIN_LEDS*3+3];
#define LEDS_PER_ROW 15
#define LED_SIZE 15
void thread_function( void * tf )
{
int n;
struct sockaddr_in cliaddr;
socklen_t len;
XEvent exppp;
while(1)
{
len = sizeof(cliaddr);
n = recvfrom(sockfd,mesg,sizeof(mesg),0,(struct sockaddr *)&cliaddr,&len);
//XSendEventXClearArea( d, w, 0, 0, 1, 1, 1 );
XLockDisplay( d );
memset(&exppp, 0, sizeof(exppp));
exppp.type = Expose;
exppp.xexpose.window = w;
XSendEvent(d,w,False,ExposureMask,&exppp);
XFlush( d );
XUnlockDisplay( d );
}
}
int main(void)
{
int n;
sockfd=socket(AF_INET,SOCK_DGRAM,0);
bzero(&servaddr,sizeof(servaddr));
servaddr.sin_family = AF_INET;
servaddr.sin_addr.s_addr=htonl(INADDR_ANY);
servaddr.sin_port=htons(7777);
if( bind(sockfd,(struct sockaddr *)&servaddr,sizeof(servaddr)) )
{
fprintf( stderr, "Error binding.\n" );
}
memset( mesg, 0, sizeof( mesg ) );
pthread_create (&pt, NULL, (void *) &thread_function, (void *)0);
int s;
wid = LEDS_PER_ROW;
hei = NUM_LIN_LEDS/LEDS_PER_ROW + ( (NUM_LIN_LEDS%LEDS_PER_ROW)?1:0 );
XInitThreads();
d = XOpenDisplay(NULL);
if (d == NULL) {
fprintf(stderr, "Cannot open display\n");
exit(1);
}
s = DefaultScreen(d);
w = XCreateSimpleWindow(d, RootWindow(d, s), 10, 10, wid*LED_SIZE, hei*LED_SIZE, 1, BlackPixel(d, s), WhitePixel(d, s));
XSetStandardProperties( d, w, "LED Simulaor", "LED Simulator", None, NULL, 0, NULL );
XSelectInput(d, w, ExposureMask | KeyPressMask);
XMapWindow(d, w);
GC dgc = XCreateGC(d, w, 0, 0);
while (1) {
XNextEvent(d, &e);
if (e.type == Expose) {
for( n = 0; n < NUM_LIN_LEDS; n++ )
{
unsigned long color = ( mesg[n*3+3] << 8 ) | ( mesg[n*3+4] << 16 ) | (mesg[n*3+5] << 0);
XSetForeground(d, dgc, color);
int x = n % wid;
int y = n / wid;
XFillRectangle(d, w, dgc, x*LED_SIZE, y*LED_SIZE, LED_SIZE, LED_SIZE);
}
}
}
XCloseDisplay(d);
return 0;
}