1 files changed, 105 insertions, 0 deletions
diff --git a/src/frontend_sdl.c b/src/frontend_sdl.c
new file mode 100644
index 0000000..a9da09e
--- /dev/null
+++ b/src/frontend_sdl.c
@@ -0,0 +1,105 @@
+
+#include <SDL/SDL.h>
+
+#include "libnsfb.h"
+#include "nsfb.h"
+#include "frontend.h"
+
+static void
+set_palette(nsfb_t *nsfb)
+{
+    SDL_Surface *sdl_screen = nsfb->frontend_priv;
+        SDL_Color colors[256];
+        int loop;
+        for(loop=0; loop < 256; loop++){
+                colors[loop].r = loop;
+                colors[loop].g = loop;
+                colors[loop].b = loop;
+                nsfb->palette[loop] = loop << 16 | loop << 8 | loop;
+        }
+
+        /* Set palette */
+        SDL_SetColors(sdl_screen, colors, 0, 256);
+
+}
+
+static int sdl_initialise(nsfb_t *nsfb)
+{
+    SDL_Surface *sdl_screen;
+
+    if (nsfb->frontend_priv != NULL)
+        return -1;
+
+    /* sanity checked depth. */
+    if ((nsfb->bpp != 32) && (nsfb->bpp != 16) && (nsfb->bpp != 8))
+        nsfb->bpp = 16; 
+
+    /* initialise SDL library */
+    if (SDL_Init(SDL_INIT_VIDEO) < 0 ) {
+        fprintf(stderr, "Unable to init SDL: %s\n", SDL_GetError());
+        return -1;
+    }
+    atexit(SDL_Quit);
+
+    sdl_screen = SDL_SetVideoMode(nsfb->width, 
+                                  nsfb->height, 
+                                  nsfb->bpp, 
+                                  SDL_SWSURFACE);
+
+    if (sdl_screen == NULL ) {
+        fprintf(stderr, "Unable to set video: %s\n", SDL_GetError());
+        return -1;
+    }
+
+    nsfb->frontend_priv = sdl_screen;
+
+    if (nsfb->bpp == 8)
+        set_palette(nsfb);
+
+    nsfb->ptr = sdl_screen->pixels;
+    nsfb->linelen = sdl_screen->pitch;
+    
+    SDL_ShowCursor(SDL_DISABLE);
+
+    return 0;
+}
+
+static int sdl_finalise(nsfb_t *nsfb)
+{
+    nsfb=nsfb;
+    return 0;
+}
+
+static int sdl_input(nsfb_t *nsfb)
+{
+    int got_event;
+    SDL_Event event;
+
+    got_event = SDL_WaitEvent(&event);
+    if (event.type == SDL_QUIT)
+        exit(0);
+    nsfb=nsfb;
+    return 1;
+}
+
+static int sdl_release(nsfb_t *nsfb, nsfb_bbox_t *box)
+{
+    SDL_Surface *sdl_screen = nsfb->frontend_priv;
+
+    SDL_UpdateRect(sdl_screen, 
+                   box->x0, 
+                   box->y0, 
+                   box->x1 - box->x0, 
+                   box->y1 - box->y0);
+
+    return 0;
+}
+
+const nsfb_frontend_rtns_t sdl_rtns = {
+    .initialise = sdl_initialise,
+    .finalise = sdl_finalise,
+    .input = sdl_input,
+    .release = sdl_release,
+};
+
+NSFB_FRONTEND_DEF(sdl, NSFB_FRONTEND_SDL, &sdl_rtns)