USBrelay: add device autodetection

Tetris/disp.h

@@ -0,0 +1,39 @@
+/*
+ * This file is part of the tetris project.
+ * Copyright 2020 Edward V. Emelianov <edward.emelianoff@gmail.com>.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "displaybuf.h"
+#define closescreen()  endwin()
+
+typedef enum{
+    KEY_NONE,
+    KEY_L,
+    KEY_R,
+    KEY_U,
+    KEY_D,
+    KEY_Q,
+    KEY_0,
+    KEY_ROTL,
+    KEY_ROTR
+} keycode;
+
+void initscreen(int *maxx, int *maxy);
+void redisplay();
+keycode getkey();
+
+void shownext(const figure *F);
+