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152 lines
6.1 KiB
C
152 lines
6.1 KiB
C
/* GStreamer
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* Copyright (C) 2015 Sebastian Dröge <sebastian@centricular.com>
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*
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_PTP_CLOCK_H__
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#define __GST_PTP_CLOCK_H__
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#include <gst/gst.h>
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#include <gst/gstsystemclock.h>
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G_BEGIN_DECLS
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#define GST_TYPE_PTP_CLOCK \
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(gst_ptp_clock_get_type())
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#define GST_PTP_CLOCK(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PTP_CLOCK,GstPtpClock))
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#define GST_PTP_CLOCK_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PTP_CLOCK,GstPtpClockClass))
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#define GST_IS_PTP_CLOCK(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PTP_CLOCK))
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#define GST_IS_PTP_CLOCK_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PTP_CLOCK))
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typedef struct _GstPtpClock GstPtpClock;
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typedef struct _GstPtpClockClass GstPtpClockClass;
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typedef struct _GstPtpClockPrivate GstPtpClockPrivate;
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/**
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* GstPtpClock:
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*
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* Opaque #GstPtpClock structure.
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*/
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struct _GstPtpClock {
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GstSystemClock clock;
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/*< private >*/
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GstPtpClockPrivate *priv;
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gpointer _gst_reserved[GST_PADDING];
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};
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/**
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* GstPtpClockClass:
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* @parent_class: parented to #GstSystemClockClass
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*
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* Opaque #GstPtpClockClass structure.
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*/
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struct _GstPtpClockClass {
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GstSystemClockClass parent_class;
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/*< private >*/
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gpointer _gst_reserved[GST_PADDING];
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};
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/**
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* GST_PTP_CLOCK_ID_NONE:
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* PTP clock identification that can be passed to gst_ptp_init() to
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* automatically select one based on the MAC address of interfaces
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*/
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#define GST_PTP_CLOCK_ID_NONE ((guint64) -1)
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GType gst_ptp_clock_get_type (void);
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gboolean gst_ptp_is_supported (void);
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gboolean gst_ptp_is_initialized (void);
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gboolean gst_ptp_init (guint64 clock_id,
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gchar ** interfaces);
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void gst_ptp_deinit (void);
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#define GST_PTP_STATISTICS_NEW_DOMAIN_FOUND "GstPtpStatisticsNewDomainFound"
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#define GST_PTP_STATISTICS_BEST_MASTER_CLOCK_SELECTED "GstPtpStatisticsBestMasterClockSelected"
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#define GST_PTP_STATISTICS_PATH_DELAY_MEASURED "GstPtpStatisticsPathDelayMeasured"
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#define GST_PTP_STATISTICS_TIME_UPDATED "GstPtpStatisticsTimeUpdated"
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/**
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* GstPtpStatisticsCallback:
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* @domain: PTP domain identifier
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* @stats: New statistics
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* @user_data: Data passed to gst_ptp_statistics_callback_add()
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*
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* The statistics can be the following structures:
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*
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* GST_PTP_STATISTICS_NEW_DOMAIN_FOUND:
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* "domain" G_TYPE_UINT The domain identifier of the domain
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* "clock" GST_TYPE_CLOCK The internal clock that is slaved to the
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* PTP domain
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*
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* GST_PTP_STATISTICS_BEST_MASTER_CLOCK_SELECTED:
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* "domain" G_TYPE_UINT The domain identifier of the domain
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* "master-clock-id" G_TYPE_UINT64 PTP clock identifier of the selected master
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* clock
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* "master-clock-port" G_TYPE_UINT PTP port number of the selected master clock
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* "grandmaster-clock-id" G_TYPE_UINT64 PTP clock identifier of the grandmaster clock
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*
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* GST_PTP_STATISTICS_PATH_DELAY_MEASURED:
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* "domain" G_TYPE_UINT The domain identifier of the domain
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* "mean-path-delay-avg" GST_TYPE_CLOCK_TIME Average mean path delay
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* "mean-path-delay" GST_TYPE_CLOCK_TIME Latest mean path delay
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* "delay-request-delay" GST_TYPE_CLOCK_TIME Delay of DELAY_REQ / DELAY_RESP messages
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*
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* GST_PTP_STATISTICS_TIME_UPDATED:
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* "domain" G_TYPE_UINT The domain identifier of the domain
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* "mean-path-delay-avg" GST_TYPE_CLOCK_TIME Average mean path delay
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* "local-time" GST_TYPE_CLOCK_TIME Local time that corresponds to ptp-time
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* "ptp-time" GST_TYPE_CLOCK_TIME Newly measured PTP time at local-time
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* "estimated-ptp-time" GST_TYPE_CLOCK_TIME Estimated PTP time based on previous measurements
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* "discontinuity" G_TYPE_INT64 Difference between estimated and measured PTP time
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* "synced" G_TYPE_BOOLEAN Currently synced to the remote clock
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* "r-squared" G_TYPE_DOUBLE R² of clock estimation regression
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* "internal-time" GST_TYPE_CLOCK_TIME Internal time clock parameter
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* "external-time" GST_TYPE_CLOCK_TIME External time clock parameter
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* "rate-num" G_TYPE_UINT64 Internal/external rate numerator
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* "rate-den" G_TYPE_UINT64 Internal/external rate denominator
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* "rate" G_TYPE_DOUBLE Internal/external rate
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*
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* If %FALSE is returned, the callback is removed and never called again.
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*
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*/
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typedef gboolean (*GstPtpStatisticsCallback) (guint8 domain,
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const GstStructure * stats,
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gpointer user_data);
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gulong gst_ptp_statistics_callback_add (GstPtpStatisticsCallback callback,
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gpointer user_data, GDestroyNotify destroy_data);
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void gst_ptp_statistics_callback_remove (gulong id);
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GstClock* gst_ptp_clock_new (const gchar *name,
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guint domain);
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#ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstPtpClock, gst_object_unref)
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#endif
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G_END_DECLS
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#endif /* __GST_PTP_CLOCK_H__ */
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