Loading images other than bitmap on SDL

Though SDL natively supports only .bmp files, on using the SDL_image extension library, we are able to load BMP, PNM, XPM, LBM, PCX, GIF, JPEG, TGA and PNG files.


SDL_Surface * IMG_Load(const char *file);



This function takes a string that holds the name of a graphics file that you want to load. If successful, it will return a pointer to an SDL_Surface that contains that newly loaded image. If there is some sort of problem, the function will return NULL.
This function looks very much like SDL_LoadBMP. The only difference is that it can load images other than those with a .bmp extension.



The example below illustrates the above explanations.


#include <sdl/sdl.h>
#include "sdl_image.h"
//images as surfaces
SDL_Surface *screen=NULL;
SDL_Surface *image=NULL;
int main(int argc, char* argv[])
{
    char done;
    SDL_Init(SDL_INIT_VIDEO);
    //set up screen
    screen=SDL_SetVideoMode(640, 480, 32, SDL_SWSURFACE);
    //load image
    image=IMG_Load("image.png");
    if(image==0)
    {
    return(1);
    }
    done = 0;
    SDL_Rect pos;
    pos.x=0;
    pos.y=0;
    SDL_Event event;


    while(done!=1)
    {


        while(SDL_PollEvent(&event))
        {


            if(event.type ==SDL_QUIT)
            {


                done=1;


            }
        }
        //apply image to screen
        SDL_BlitSurface(image, 0, screen, &pos);
        //Update screen
        SDL_Flip(screen);
    }


    SDL_Quit();
    return(0);
}




The source code is available at:
http://www.mediafire.com/?spk6f4poay6j5d1