[SDL] Search function to display picture got with libcurl

[Damien Fawks]

Hi there,

I'm writing a piece of software to display a picture located on a server in an SDL window. I'm getting the picture with libcurl using this code :


handle=curl_easy_init();                                                            
curl_easy_setopt(handle,CURLOPT_URL,"http://192.168.0.20/image.jpg");
curl_easy_setopt(handle,CURLOPT_WRITEFUNCTION,update_img);
curl_easy_perform(handle);
curl_easy_cleanup(handle);


For performance reasons, I cannot make a disk access to store the picture and recall it with with IMG_Load. So I wrote this fonction to display directly the incoming image. curl_easy_setopt require a fonction with the same prototype thant fwrite. I wrote this :


void update_img(void *ptr, size_t size, size_t nmemb, void *stream)
{
    img_position.x = 0;
        img_position.y = 0;

    webcam_img = IMG_Load(ptr);
    SDL_BlitSurface(webcam_img, NULL, screen, &img_position);
        SDL_Flip(screen);
    pause();
}

It doesn't work because the IMG_Load argument needs to be the path to a file (stored in an const *char). So I'm searching for an SDL function which can display an image directly from a pointer.

Many thanks in advance for your help.


PS : I use the latest SDL devel lib on MacOSX with Xcode. 
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