`NetClientClock` implements a custom `gst::Clock` that synchronizes its time to a remote time provider such as `NetTimeProvider`. `NtpClock` implements a `gst::Clock` that synchronizes its time to a remote NTPv4 server. A new clock is created with `NetClientClock::new` or `NtpClock::new`, which takes the address and port of the remote time provider along with a name and an initial time. This clock will poll the time provider and will update its calibration parameters based on the local and remote observations. The "round-trip" property limits the maximum round trip packets can take. Various parameters of the clock can be configured with the parent `gst::Clock` "timeout", "window-size" and "window-threshold" object properties. A `NetClientClock` and `NtpClock` is typically set on a `gst::Pipeline` with `gst::Pipeline::use_clock`. If you set a `gst::Bus` on the clock via the "bus" object property, it will send `gst::MessageType::Element` messages with an attached `gst::Structure` containing statistics about clock accuracy and network traffic. # Implements [`ClockExt`](trait.ClockExt.html), [`ObjectExt`](trait.ObjectExt.html), [`ObjectExt`](trait.ObjectExt.html) Create a new `GstNetClientInternalClock` that will report the time provided by the `NetTimeProvider` on `remote_address` and `remote_port`. ## `name` a name for the clock ## `remote_address` the address or hostname of the remote clock provider ## `remote_port` the port of the remote clock provider ## `base_time` initial time of the clock # Returns a new `gst::Clock` that receives a time from the remote clock. This object exposes the time of a `gst::Clock` on the network. A `NetTimeProvider` is created with `NetTimeProvider::new` which takes a `gst::Clock`, an address and a port number as arguments. After creating the object, a client clock such as `NetClientClock` can query the exposed clock over the network for its values. The `NetTimeProvider` typically wraps the clock used by a `gst::Pipeline`. # Implements [`ObjectExt`](trait.ObjectExt.html), [`ObjectExt`](trait.ObjectExt.html) Allows network clients to get the current time of `clock`. ## `clock` a `gst::Clock` to export over the network ## `address` an address to bind on as a dotted quad (xxx.xxx.xxx.xxx), IPv6 address, or NULL to bind to all addresses ## `port` a port to bind on, or 0 to let the kernel choose # Returns the new `NetTimeProvider`, or NULL on error # Implements [`NetClientClockExt`](trait.NetClientClockExt.html), [`ClockExt`](trait.ClockExt.html), [`ObjectExt`](trait.ObjectExt.html), [`ObjectExt`](trait.ObjectExt.html) Create a new `NtpClock` that will report the time provided by the NTPv4 server on `remote_address` and `remote_port`. ## `name` a name for the clock ## `remote_address` the address or hostname of the remote clock provider ## `remote_port` the port of the remote clock provider ## `base_time` initial time of the clock # Returns a new `gst::Clock` that receives a time from the remote clock. 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. `PtpClock::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, you can use `gst::ClockExt::wait_for_sync`, the GstClock::synced signal and `gst::ClockExt::is_synced`. 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. # Implements [`ClockExt`](trait.ClockExt.html), [`ObjectExt`](trait.ObjectExt.html), [`ObjectExt`](trait.ObjectExt.html) Creates a new PTP clock instance that exports the PTP time of the master clock in `domain`. This clock can be slaved to other clocks as needed. If `gst_ptp_init` was not called before, this will call `gst_ptp_init` with default parameters. This clock only returns valid timestamps after it received the first times from the PTP master clock on the network. Once this happens the GstPtpClock::internal-clock property will become non-NULL. You can check this with `gst::ClockExt::wait_for_sync`, the GstClock::synced signal and `gst::ClockExt::is_synced`. ## `name` Name of the clock ## `domain` PTP domain