123 lines
2.8 KiB
C
123 lines
2.8 KiB
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 "parameters.h"
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#include <stdlib.h>
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#include <math.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include "color.h"
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#include "DrawFunctions.h"
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#include <unistd.h>
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#define MAX_BUFFER 1487
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struct DPODriver
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{
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int leds;
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int skipfirst;
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int firstval;
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int port;
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int oldport;
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char address[PARAM_BUFF];
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char oldaddress[PARAM_BUFF];
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struct sockaddr_in servaddr;
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int socket;
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};
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static void DPOUpdate(void * id, struct NoteFinder*nf)
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{
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struct DPODriver * d = (struct DPODriver*)id;
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int i, j;
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if( strcmp( d->oldaddress, d->address ) != 0 || d->socket == -1 || d->oldport != d->port )
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{
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d->socket = socket(AF_INET,SOCK_DGRAM,0);
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struct hostent *hname;
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hname = gethostbyname(d->address);
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if( hname )
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{
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bzero(&d->servaddr, sizeof(d->servaddr));
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d->servaddr.sin_family = hname->h_addrtype;
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d->servaddr.sin_port = htons( d->port );
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d->servaddr.sin_addr.s_addr = *(long*)hname->h_addr;
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if( d->socket >= 0 )
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{
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d->oldport = d->port;
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memcpy( d->oldaddress, d->address, PARAM_BUFF );
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}
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else
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{
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fprintf( stderr, "Socket Error.\n" );
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}
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}
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else
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{
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fprintf( stderr, "Error: Cannot find host \"%s\":%d\n", d->address, d->port );
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}
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}
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if( d->socket > 0 )
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{
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char buffer[MAX_BUFFER];
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i = 0;
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while( i < d->skipfirst )
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buffer[i++] = d->firstval;
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if( d->leds * 3 + i >= MAX_BUFFER )
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d->leds = (MAX_BUFFER-1)/3;
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for( j = 0; j < d->leds; j++ )
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{
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buffer[i++] = OutLEDs[j*3+2];
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buffer[i++] = OutLEDs[j*3+0];
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buffer[i++] = OutLEDs[j*3+1];
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}
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int r = sendto( d->socket, buffer, i, MSG_NOSIGNAL, &d->servaddr, sizeof( d->servaddr ) );
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if( r < 0 )
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{
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fprintf( stderr, "Send fault.\n" );
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close( d->socket );
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d->socket = -1;
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}
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}
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}
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static void DPOParams(void * id )
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{
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struct DPODriver * d = (struct DPODriver*)id;
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strcpy( d->address, "localhost" );
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d->leds = 10; RegisterValue( "leds", PINT, &d->leds, sizeof( d->leds ) );
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d->skipfirst = 1; RegisterValue( "skipfirst", PINT, &d->skipfirst, sizeof( d->skipfirst ) );
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d->port = 7777; RegisterValue( "port", PINT, &d->port, sizeof( d->port ) );
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d->firstval = 0; RegisterValue( "firstval", PINT, &d->firstval, sizeof( d->firstval ) );
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RegisterValue( "address", PBUFFER, d->address, sizeof( d->address ) );
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d->socket = -1;
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d->oldaddress[0] = 0;
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}
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static struct DriverInstances * DisplayNetwork(const char * parameters)
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{
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struct DriverInstances * ret = malloc( sizeof( struct DriverInstances ) );
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struct DPODriver * d = ret->id = malloc( sizeof( struct DPODriver ) );
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memset( d, 0, sizeof( struct DPODriver ) );
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ret->Func = DPOUpdate;
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ret->Params = DPOParams;
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DPOParams( d );
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return ret;
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}
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REGISTER_OUT_DRIVER(DisplayNetwork);
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