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/* GStreamer
* Copyright (C) 2019 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Suite 500,
* Boston, MA 02110-1335, USA.
*/
/**
* SECTION:element-clockselect
*
* The clockselect element is a pipeline that enables one to choose its
* clock. By default, pipelines chose a clock depending on its elements,
* however the clockselect pipeline has some properties to force an
* arbitrary clock on it.
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch-1.0 -v clockselect. \( clock-id=ptp domain=1 fakesrc ! fakesink \)
* ]|
* This example will create a pipeline and use the PTP clock with domain 1 on it.
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/net/net.h>
#include "gstclockselect.h"
GST_DEBUG_CATEGORY_STATIC (gst_clock_select_debug_category);
#define GST_CAT_DEFAULT gst_clock_select_debug_category
#define GST_TYPE_CLOCK_SELECT_CLOCK_ID (gst_clock_select_clock_id_get_type())
static GType
gst_clock_select_clock_id_get_type (void)
{
static GType clock_id_type = 0;
if (g_once_init_enter (&clock_id_type)) {
GType type;
static const GEnumValue clock_id_types[] = {
{GST_CLOCK_SELECT_CLOCK_ID_DEFAULT,
"Default (elected from elements) pipeline clock", "default"},
{GST_CLOCK_SELECT_CLOCK_ID_MONOTONIC, "System monotonic clock",
"monotonic"},
{GST_CLOCK_SELECT_CLOCK_ID_REALTIME, "System realtime clock", "realtime"},
{GST_CLOCK_SELECT_CLOCK_ID_PTP, "PTP clock", "ptp"},
{GST_CLOCK_SELECT_CLOCK_ID_TAI, "System TAI clock", "tai"},
{0, NULL, NULL},
};
type = g_enum_register_static ("GstClockSelectClockId", clock_id_types);
g_once_init_leave (&clock_id_type, type);
}
return clock_id_type;
}
/* prototypes */
static void gst_clock_select_set_property (GObject * object,
guint property_id, const GValue * value, GParamSpec * pspec);
static void gst_clock_select_get_property (GObject * object,
guint property_id, GValue * value, GParamSpec * pspec);
static GstClock *gst_clock_select_provide_clock (GstElement * element);
enum
{
PROP_0,
PROP_CLOCK_ID,
PROP_PTP_DOMAIN
};
#define DEFAULT_CLOCK_ID GST_CLOCK_SELECT_CLOCK_ID_DEFAULT
#define DEFAULT_PTP_DOMAIN 0
/* class initialization */
#define gst_clock_select_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstClockSelect, gst_clock_select, GST_TYPE_PIPELINE,
GST_DEBUG_CATEGORY_INIT (gst_clock_select_debug_category, "clockselect", 0,
"debug category for clockselect element"));
static void
gst_clock_select_class_init (GstClockSelectClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
gobject_class->set_property = gst_clock_select_set_property;
gobject_class->get_property = gst_clock_select_get_property;
g_object_class_install_property (gobject_class, PROP_CLOCK_ID,
g_param_spec_enum ("clock-id", "Clock ID", "ID of pipeline clock",
GST_TYPE_CLOCK_SELECT_CLOCK_ID, DEFAULT_CLOCK_ID,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_PTP_DOMAIN,
g_param_spec_uint ("ptp-domain", "PTP domain",
"PTP clock domain (meaningful only when Clock ID is PTP)",
0, G_MAXUINT8, DEFAULT_PTP_DOMAIN,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gst_element_class_set_static_metadata (GST_ELEMENT_CLASS (klass),
"Clock select", "Generic/Bin", "Pipeline that enables different clocks",
"Ederson de Souza <ederson.desouza@intel.com>");
gstelement_class->provide_clock =
GST_DEBUG_FUNCPTR (gst_clock_select_provide_clock);
gst_type_mark_as_plugin_api (GST_TYPE_CLOCK_SELECT_CLOCK_ID, 0);
}
static void
gst_clock_select_init (GstClockSelect * clock_select)
{
clock_select->clock_id = DEFAULT_CLOCK_ID;
clock_select->ptp_domain = DEFAULT_PTP_DOMAIN;
}
static void
gst_clock_select_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
GstClockSelect *clock_select = GST_CLOCK_SELECT (object);
GST_DEBUG_OBJECT (clock_select, "set_property");
switch (property_id) {
case PROP_CLOCK_ID:
clock_select->clock_id = g_value_get_enum (value);
break;
case PROP_PTP_DOMAIN:
clock_select->ptp_domain = g_value_get_uint (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gst_clock_select_get_property (GObject * object, guint property_id,
GValue * value, GParamSpec * pspec)
{
GstClockSelect *clock_select = GST_CLOCK_SELECT (object);
GST_DEBUG_OBJECT (clock_select, "get_property");
switch (property_id) {
case PROP_CLOCK_ID:
g_value_set_enum (value, clock_select->clock_id);
break;
case PROP_PTP_DOMAIN:
g_value_set_uint (value, clock_select->ptp_domain);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static GstClock *
gst_clock_select_provide_clock (GstElement * element)
{
GstClock *clock;
GstClockSelect *clock_select = GST_CLOCK_SELECT (element);
switch (clock_select->clock_id) {
case GST_CLOCK_SELECT_CLOCK_ID_MONOTONIC:
clock =
g_object_new (GST_TYPE_SYSTEM_CLOCK, "name", "DebugGstSystemClock",
NULL);
gst_object_ref_sink (clock);
gst_util_set_object_arg (G_OBJECT (clock), "clock-type", "monotonic");
break;
case GST_CLOCK_SELECT_CLOCK_ID_REALTIME:
clock =
g_object_new (GST_TYPE_SYSTEM_CLOCK, "name", "DebugGstSystemClock",
NULL);
gst_object_ref_sink (clock);
gst_util_set_object_arg (G_OBJECT (clock), "clock-type", "realtime");
break;
case GST_CLOCK_SELECT_CLOCK_ID_PTP:
clock = gst_ptp_clock_new ("ptp-clock", clock_select->ptp_domain);
if (!clock) {
GST_WARNING_OBJECT (clock_select,
"Failed to get PTP clock, falling back to pipeline default clock");
}
break;
case GST_CLOCK_SELECT_CLOCK_ID_TAI:
clock =
g_object_new (GST_TYPE_SYSTEM_CLOCK, "name", "DebugGstSystemClock",
NULL);
gst_object_ref_sink (clock);
gst_util_set_object_arg (G_OBJECT (clock), "clock-type", "tai");
break;
case GST_CLOCK_SELECT_CLOCK_ID_DEFAULT:
default:
clock = NULL;
}
if (clock) {
GST_INFO_OBJECT (clock_select, "Waiting clock sync...");
gst_clock_wait_for_sync (clock, GST_CLOCK_TIME_NONE);
gst_pipeline_use_clock (GST_PIPELINE (clock_select), clock);
/* gst_pipeline_use_clock above ref's clock, as well as parent call
* below, so we don't need our reference anymore */
gst_object_unref (clock);
}
clock = GST_ELEMENT_CLASS (parent_class)->provide_clock (element);
return clock;
}
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