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8d77759834
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
25 lines
416 B
Makefile
25 lines
416 B
Makefile
# adapter test needs sys/times.h and unistd.h
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if HAVE_SYS_TIMES_H_AND_UNISTD_H
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ADAPTER_TEST_DIR = adapter
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else
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ADAPTER_TEST_DIR =
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endif
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always_dirs = \
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controller \
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helloworld \
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manual \
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memory \
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netclock \
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ptp \
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stepping \
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streamiddemux \
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streams
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SUBDIRS = \
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$(always_dirs) \
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$(ADAPTER_TEST_DIR)
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DIST_SUBDIRS = $(always_dirs) adapter
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include $(top_srcdir)/common/parallel-subdirs.mak
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