1 files changed, 69 insertions, 0 deletions
diff --git a/plugins/gxvideo/fps.c b/plugins/gxvideo/fps.c
new file mode 100644
index 00000000..151ff72e
--- /dev/null
+++ b/plugins/gxvideo/fps.c
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2010 Benoit Gschwind
+ * Inspired by original author : Pete Bernert
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+
+#include <unistd.h>
+#include <sys/time.h>
+
+#include "globals.h"
+#include "fps.h"
+#include "gpu.h"
+
+#define TIMEBASE 100000
+
+unsigned long time_get_time() {
+	struct timeval tv;
+	gettimeofday(&tv, 0); // well, maybe there are better ways
+	return tv.tv_sec * 100000 + tv.tv_usec / 10; // to do that, but at least it works
+}
+
+void frame_cap(int fps) {
+	static unsigned int last_time = 0;
+	unsigned int c = time_get_time();
+
+	if (!fps) {
+		last_time = c;
+		return;
+	}
+
+	if (last_time + (100000/fps) < c) {
+		last_time = c;
+		return;
+	}
+
+	while (last_time + (100000/fps) - 20 > c) {
+		usleep(((100000/fps) - 20 - (c - last_time)) * 10 );
+		c = time_get_time();
+	}
+
+	last_time = c;
+
+}
+
+void compute_fps() {
+	static int count = 0;
+	static unsigned int last_time = 0;
+	unsigned int c = time_get_time();
+	++count;
+	if((c - last_time) > 100000) {
+		g_draw.fps = ((double)count) / ((double)(c - last_time)) * 100000;
+		count = 0;
+		last_time = c;
+	}
+}