Measure the interval since the last audio rate control message in
nanoseconds instead of seconds. Increasing the precision catches audio
rate messages that are late by less than a second.
Signed-off-by: Deborah Brouwer <deborahbrouwer3563@xxxxxxxxx>
---
utils/cec-follower/cec-processing.cpp | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/utils/cec-follower/cec-processing.cpp b/utils/cec-follower/cec-processing.cpp
index 93db4059..243c9d09 100644
--- a/utils/cec-follower/cec-processing.cpp
+++ b/utils/cec-follower/cec-processing.cpp
@@ -29,8 +29,8 @@
/* Time between each polling message sent to a device */
#define POLL_PERIOD 15000
-/* The maximum interval in seconds between audio rate messages as defined in the spec */
-#define MAX_AUD_RATE_MSG_INTERVAL 2
+/* The maximum interval in nanoseconds between audio rate messages as defined in the spec */
+#define MAX_AUD_RATE_MSG_INTERVAL 2000000000
struct cec_enum_values {
const char *type_name;
@@ -241,7 +241,8 @@ static void aud_rate_msg_interval_check(__u64 ts_new, __u64 ts_old)
* turned off the audio rate control.
*/
if (ts_old) {
- unsigned interval = (ts_new - ts_old) / 1000000000;
+ __u64 interval = ts_new - ts_old;
+
if (interval > MAX_AUD_RATE_MSG_INTERVAL) {
warn("The interval between Audio Rate Control messages was greater\n");
warn("than the Maxiumum Audio Rate Message Interval (2s).\n");
--
2.17.1
