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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
26 lines
727 B
Modula-2
26 lines
727 B
Modula-2
EXPORTS
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gst_buffer_add_net_address_meta
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gst_buffer_add_net_control_message_meta
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gst_net_address_meta_api_get_type
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gst_net_address_meta_get_info
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gst_net_client_clock_get_type
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gst_net_client_clock_new
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gst_net_control_message_meta_api_get_type
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gst_net_control_message_meta_get_info
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gst_net_time_packet_copy
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gst_net_time_packet_free
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gst_net_time_packet_get_type
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gst_net_time_packet_new
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gst_net_time_packet_receive
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gst_net_time_packet_send
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gst_net_time_packet_serialize
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gst_net_time_provider_get_type
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gst_net_time_provider_new
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gst_ptp_clock_get_type
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gst_ptp_clock_new
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gst_ptp_deinit
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gst_ptp_init
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gst_ptp_is_initialized
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gst_ptp_is_supported
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gst_ptp_statistics_callback_add
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gst_ptp_statistics_callback_remove
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