--- /dev/null
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Copyright (C) 2011 yongzh (freeman.yong@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 2 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, write to the *
+ * Free Software Foundation, Inc., *
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+#ifndef FRAME_SKIPPER_H
+#define FRAME_SKIPPER_H
+
+class FrameSkipper {
+public:
+ enum { AUTO, MANUAL };
+
+ FrameSkipper();
+
+ void setSkips(int type, int max) {
+ skipType = type;
+ maxSkips = max;
+ }
+
+ void setTargetFPS(int fps) {
+ targetFPS = fps;
+ }
+ bool willSkipNext() {
+ return (skipCounter > 0);
+ }
+
+#if 0
+ bool hasSkipped();
+#else
+ bool hasSkipped() {
+ return (oldSkip > 0);
+ }
+ void newFrame();
+#endif
+ void start();
+ void update();
+
+private:
+ int skipType;
+ int oldSkip;
+ int maxSkips;
+ int targetFPS;
+ int skipCounter;
+ int countVI;
+ unsigned int initialTicks;
+ unsigned int virtualCount;
+};
+
+#endif
+