main.c

dgstation relook 400 sample code to run shared plugin process in background.

// Signal Popup for Relook400
// Charles Putney
// 18 Quinns Road
// Shankill, Co. Dublin
// IRELAND
//
// Change History
//
// 24-01-2008
//


#include <stdio.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

#include "fb_8bpp/fb.h"
#include "fb_8bpp/gtools.h"

#include "event.h"
#include "SignalPopup.h"

// global frame buffer
fb_t fb;

/*
 * main function for this plugin
 *
 * argument is same with main function. I think you already know about this...
 *
 * in this function, you should process all event and control all of
 * other hardware(framebuffer, demux, tuner, front panel, ...).
 * main application does nothing while this function is running.
 *
 * return value... hum... 0 is successful. and otherwise maybe failed...
 * but, I don`t know it will be used...
 *
 */
int plugin_main( int argc, char **argv )
{
	char *fbdev = "/dev/fb/1";
	int a;
	int setpallete = 0;
	int ret;
//	char msg[100];
//	int telnet_output = open("/dev/pts/0",O_WRONLY);
//	sprintf(msg,"Starting main.c in plugin \n"); write(telnet_output,msg,strlen(msg));

	/* parse some arguments */
	for( a=1; a<argc; a++ )
	{
		if( !strcmp(argv[a],"--dev") && a+1<argc )
		{
			fbdev = argv[a+1];
			a++;
			continue;
		}

		if( !strcmp(argv[a],"--setpallete") )
		{
			setpallete = 1;
			continue;
		}
	}

	/* initialize random */
	srandom( time(NULL) );

	/* initialize module */
	fb = fb_open( T_FB, 0, 0, fbdev );
	if( fb < 0 )
	{
		fprintf( stderr, "fb_open failed.\n" );
		return -1;
	}
	if( setpallete )
	{
		unsigned char a[256];
		unsigned char r[256];
		unsigned char g[256];
		unsigned char b[256];
		int i;

		for( i=0; i<256; i++ )
		{
			a[i] = random()%256;
			r[i] = random()%256;
			g[i] = random()%256;
			b[i] = random()%256;
		}

		fb_set_palette( fb, 16, a, r, g, b, 256-16 );
	}
//	sprintf(msg,"Initialising Plugin event \n"); write(telnet_output,msg,strlen(msg));

	if( plugin_event_init( "/dev/input/event0" ) < 0 )
	{
//		sprintf(msg,"Plugin did not start \n"); write(telnet_output,msg,strlen(msg));
		goto failed;
	}
	/* initialize internal module */
//	sprintf(msg,"Initialising Plugin module \n"); write(telnet_output,msg,strlen(msg));

	if( plugin_msg_init() >= 0 )
	{
		int code, value;

		ret = 0;
		while( ret >= 0 )
		{
			code = value = 0;

			if( plugin_event_read( &code, &value ) >= 0 )  // was plugin_event_read_nowait( &code, &value )
				printf( "%d %d\n", code, value );

			ret = plugin_msg_handler( 0, code, value );
		}

		plugin_msg_cleanup();
	}

	plugin_event_cleanup();

failed:
	/* clean fb */
	fb_close( fb );

	return 0;
}