viz1090/sdl1090/init.c

#include "dump1090.h"
#include "init.h"
#include "SDL/SDL_getenv.h"

void mouseSetup() {
	#ifdef RPI
		wiringPiSetupGpio() ;
		pinMode(23, INPUT);
		pullUpDnControl (23, PUD_UP);
		pinMode(22, INPUT);
		pullUpDnControl (22, PUD_UP);	
		pinMode(27, INPUT);
		pullUpDnControl (27, PUD_UP);	

		SDL_ShowCursor(SDL_DISABLE);
    #endif
}

void init(char *title)
{

	// raspberry pi compiler flag enables these options
	#ifdef RPI
		putenv((char*)"FRAMEBUFFER=/dev/fb1");
	    putenv((char*)"SDL_FBDEV=/dev/fb1");
    #endif


	/* Initialise SDL */
	
	if (SDL_Init(SDL_INIT_VIDEO) < 0)
	{
		printf("Could not initialize SDL: %s\n", SDL_GetError());
		
		exit(1);
	}
	
	/* Initialise SDL_TTF */
	
	if (TTF_Init() < 0)
	{
		printf("Couldn't initialize SDL TTF: %s\n", SDL_GetError());

		exit(1);
	}

	#ifdef RPI
	 	const SDL_VideoInfo* vInfo = SDL_GetVideoInfo();

        if (!vInfo) {
                fprintf(stderr,"ERROR in SDL_GetVideoInfo(): %s\n",SDL_GetError());
                exit(1);
        }

        Modes.screen_width = vInfo->current_w;
        Modes.screen_height = vInfo->current_h;
        Modes.screen_depth = vInfo->vfmt->BitsPerPixel;

        Modes.screen_upscale = 1;
    #endif

    Uint32 flags = SDL_HWPALETTE|SDL_DOUBLEBUF;

    if(Modes.fullscreen) {
    	flags = flags | SDL_FULLSCREEN;
    }

    if(Modes.screen_upscale > 1) {
	 	game.bigScreen = SDL_SetVideoMode(Modes.screen_width * Modes.screen_upscale, Modes.screen_height * Modes.screen_upscale, Modes.screen_depth, flags);	
	 	game.screen = SDL_CreateRGBSurface(0, Modes.screen_width, Modes.screen_height, Modes.screen_depth, 0, 0, 0, 0);
	} else {
		game.screen = SDL_SetVideoMode(Modes.screen_width, Modes.screen_height, Modes.screen_depth, flags);		
	}

	if (game.screen == NULL)
	{
		printf("Couldn't set screen mode to %d x %d: %s\n", Modes.screen_width, Modes.screen_height, SDL_GetError());

		exit(1);
	}

	mouseSetup();	

    /* Load the font */
    
    game.mapFont = loadFont("font/TerminusTTF-4.46.0.ttf", 12 * Modes.screen_uiscale);
    game.mapBoldFont = loadFont("font/TerminusTTF-Bold-4.46.0.ttf", 12 * Modes.screen_uiscale);    
       
    game.listFont = loadFont("font/TerminusTTF-Bold-4.46.0.ttf", 18 * Modes.screen_uiscale);

    game.messageFont = loadFont("font/TerminusTTF-Bold-4.46.0.ttf", 34 * Modes.screen_uiscale);
    game.labelFont = loadFont("font/TerminusTTF-Bold-4.46.0.ttf", 16 * Modes.screen_uiscale);

    game.mapFontWidth = 5 * Modes.screen_uiscale;
    game.mapFontHeight = 12 * Modes.screen_uiscale; 

    game.messageFontWidth = 17 * Modes.screen_uiscale;
    game.messageFontHeight = 34 * Modes.screen_uiscale; 

    game.labelFontWidth = 5 * Modes.screen_uiscale;
    game.labelFontHeight = 10 * Modes.screen_uiscale; 

	/* Set the screen title */
	
	SDL_WM_SetCaption(title, NULL);

	initMaps();
}

void cleanup()
{
	/* Close the font */
	
	closeFont(game.mapFont);
	closeFont(game.mapBoldFont);
	closeFont(game.messageFont);
	closeFont(game.labelFont);
	closeFont(game.listFont);

	/* Close SDL_TTF */
	
	TTF_Quit();

	
	/* Shut down SDL */
	
	SDL_Quit();
}