Merge branch 'fceux-no-gui' into 'master'

apps,fceux: support video without GUI

See merge request projectn/nexus-am!47

apps/fceux/src/drivers/sdl/sdl-video.cpp

@@ -18,6 +18,8 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
+#define HAS_GUI
+
 #include "sdl.h"
 #include "../common/vidblit.h"
 #include "../../fceu.h"
@@ -115,8 +117,6 @@ static uint32_t canvas[NWIDTH * 240];
 void
 BlitScreen(uint8 *XBuf)
 {
-	int xo = 0, yo = 0;
-
 	// refresh the palette if required
 	if(s_paletterefresh) {
     SetPaletteBlitToHigh((uint8*)s_psdl);
@@ -134,6 +134,20 @@ BlitScreen(uint8 *XBuf)
 
 
   // ensure that the display is updated
-  draw_rect(canvas, xo + (screen_width() - 256) / 2, yo + (screen_height() - 240) / 2, scrw, s_tlines);
+#ifdef HAS_GUI
+  draw_rect(canvas, (screen_width() - 256) / 2, (screen_height() - 240) / 2, scrw, s_tlines);
   draw_sync();
+#else
+  printf("\033[0;0H");
+  for (int y = 0; y < s_tlines; y += 4) {
+    //draw_rect(&screen[y][8], xpad, ypad + y, W, 1);
+    for (int x = 0; x < scrw; x += 2) {
+      uint32_t color = canvas[y * 256 + x];
+      const char *list = "o. *O0@#";
+      char c = list[color / 0x222222u];
+      _putc(c);
+    }
+    _putc('\n');
+  }
+#endif
 }