Add millisecond event times

Expand the (x, y) notion of the current hardware events to
the more useful (x, y, t) notion. This patch was inspired
by a gesture patch from Arturo Castro <arturo@openframeworks.cc>.

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>

1 files changed, 9 insertions, 0 deletions

diff --git a/src/hwdata.c b/src/hwdata.c
index e76bcd8..f204884 100644
--- a/src/hwdata.c
+++ b/src/hwdata.c
@@ -26,6 +26,14 @@ void init_hwdata(struct HWData *hw)
         memset(hw, 0, sizeof(struct HWData));
 }
 
+static mstime_t get_mstime()
+{
+        static const mstime_t ms = 1000;
+        struct timeval now;
+        gettimeofday(&now, NULL);
+        return now.tv_usec / ms + now.tv_sec * ms;
+}
+
 static void set_value(struct HWData *hw, int code, int value)
 {
         if (hw->nread < DIM_FINGER) {
@@ -50,6 +58,7 @@ static void accept_packet(struct HWData *hw)
 {
         hw->nread = 0;
         hw->mread[hw->nread] = 0;
+        hw->evtime = get_mstime();
 }
 
 int read_hwdata(struct HWData *hw, const struct input_event* ev)