live: Use global frame count to display the FPS counter

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 7 insertions, 8 deletions

diff --git a/live.c b/live.c
index 77587cb..4a920c5 100644
--- a/live.c
+++ b/live.c
@@ -57,8 +57,8 @@
 #define SELECT_TIMEOUT		2000		/* in milliseconds */
 
 static struct timespec fps_ts = { 0, 0 };
-static unsigned int fps_count = 0;
-static bool show_fps = true;
+static unsigned int fps_last = 0;
+static bool fps_show = true;
 
 static unsigned int frame_count = 0;
 static unsigned int frame_skip = 0;
@@ -174,19 +174,18 @@ static void viewfinder_process(struct omap3_isp_device *isp __attribute__((__unu
 
 	frame_count++;
 
-	if (show_fps){
-		fps_count++;
-
+	if (fps_show){
 		clock_gettime(CLOCK_MONOTONIC, &ts);
 
 		interval = ts.tv_sec - fps_ts.tv_sec;
 		interval += (ts.tv_nsec - fps_ts.tv_nsec) / 1000000000.0;
 
 		if (interval >= 5) {
-			if (fps_count > 1)
-				printf("frame rate: %f fps\n", fps_count / interval);
+			if (frame_count > 1)
+				printf("frame rate: %f fps\n",
+				      (frame_count - fps_last) / interval);
 
-			fps_count = 0;
+			fps_last = frame_count;
 			fps_ts = ts;
 		}
 	}