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GstPtpClock implements a PTP (IEEE1588:2008) ordinary clock in slave-only mode, that allows a GStreamer pipeline to synchronize to a PTP network clock in some specific domain. The PTP subsystem can be initialized with gst_ptp_init(), which then starts a helper process to do the actual communication via the PTP ports. This is required as PTP listens on ports < 1024 and thus requires special privileges. Once this helper process is started, the main process will synchronize to all PTP domains that are detected on the selected interfaces. gst_ptp_clock_new() then allows to create a GstClock that provides the PTP time from a master clock inside a specific PTP domain. This clock will only return valid timestamps once the timestamps in the PTP domain are known. To check this, the GstPtpClock::internal-clock property and the related notify::clock signal can be used. Once the internal clock is not NULL, the PTP domain's time is known. Alternatively you can wait for this with gst_ptp_clock_wait_ready(). To gather statistics about the PTP clock synchronization, gst_ptp_statistics_callback_add() can be used. This gives the application the possibility to collect all kinds of statistics from the clock synchronization. https://bugzilla.gnome.org/show_bug.cgi?id=749391 |
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| .. | ||
| .gitignore | ||
| gstnet.h | ||
| gstnetaddressmeta.c | ||
| gstnetaddressmeta.h | ||
| gstnetclientclock.c | ||
| gstnetclientclock.h | ||
| gstnetcontrolmessagemeta.c | ||
| gstnetcontrolmessagemeta.h | ||
| gstnettimepacket.c | ||
| gstnettimepacket.h | ||
| gstnettimeprovider.c | ||
| gstnettimeprovider.h | ||
| gstptp_private.h | ||
| gstptpclock.c | ||
| gstptpclock.h | ||
| Makefile.am | ||
| net.h | ||