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ptp: Add #define to only use SYNC messages for which we can send DELAY_REQ

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https://bugzilla.gnome.org/show_bug.cgi?id=749391
This commit is contained in:
Sebastian Dröge 2015-06-02 15:24:06 +02:00
parent 5e1974fc08
commit 02ba5b20c7
1 changed files with 12 additions and 0 deletions
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12
libs/gst/net/gstptpclock.c
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@ -99,6 +99,13 @@ GST_DEBUG_CATEGORY_STATIC (ptp_debug);
*/
#define USE_OPPORTUNISTIC_CLOCK_SELECTION 1
/* Only consider SYNC messages for which we are allowed to send a DELAY_REQ
* afterwards. This allows better synchronization in networks with varying
* delays, as for every other SYNC message we would have to assume that it's
* the average of what we saw before. But that might be completely off
*/
#define USE_ONLY_SYNC_WITH_DELAY 1
/* How many updates should be skipped at maximum when using USE_MEASUREMENT_FILTERING */
#define MAX_SKIPPED_UPDATES 5
@ -1021,6 +1028,11 @@ update_ptp_time (PtpDomainData * domain, PtpPendingSync * sync)
GstClockTimeDiff discont = 0;
GstClockTime estimated_ptp_time = GST_CLOCK_TIME_NONE;
#ifdef USE_ONLY_SYNC_WITH_DELAY
if (sync->delay_req_send_time_local == GST_CLOCK_TIME_NONE)
return;
#endif
#ifdef USE_MEASUREMENT_FILTERING
GstClockTime orig_internal_time, orig_external_time, orig_rate_num,
orig_rate_den;