Clear framebuffer for both amlogic and pi

src/util.c

@@ -0,0 +1,39 @@
+/*
+ * This file is part of Moonlight Embedded.
+ *
+ * Copyright (C) 2017 Iwan Timmer
+ *
+ * Moonlight 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.
+ *
+ * Moonlight 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 Moonlight; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "util.h"
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdio.h>
+
+int blank_fb(char *path, bool clear) {
+  int fd = open(path, O_RDWR);
+
+  if(fd >= 0) {
+    int ret = write(fd, clear ? "1" : "0", 1);
+    if (ret < 0)
+      fprintf(stderr, "Failed to clear framebuffer %s: %d\n", path, ret);
+
+    close(fd);
+    return 0;
+  } else
+    return -1;
+}