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timecodestamper: First timecode from current system time

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Add a new flag which automatically sets this first timecode to the
current system time in local time zone.

https://bugzilla.gnome.org/show_bug.cgi?id=778703
This commit is contained in:
Georg Lippitsch 2017-02-22 22:30:17 +01:00 committed by Sebastian Dröge
parent 290f3ca6d7
commit 2cc62641c3
2 changed files with 36 additions and 0 deletions
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35
gst/timecode/gsttimecodestamper.c
View file

@ -60,6 +60,7 @@ enum
PROP_DAILY_JAM,
PROP_POST_MESSAGES,
PROP_FIRST_TIMECODE,
PROP_FIRST_NOW
};
#define DEFAULT_OVERRIDE_EXISTING FALSE
@ -67,6 +68,7 @@ enum
#define DEFAULT_SOURCE_CLOCK NULL
#define DEFAULT_DAILY_JAM NULL
#define DEFAULT_POST_MESSAGES FALSE
#define DEFAULT_FIRST_NOW FALSE
static GstStaticPadTemplate gst_timecodestamper_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
@ -145,6 +147,12 @@ gst_timecodestamper_class_init (GstTimeCodeStamperClass * klass)
"If unset (and to-now is also not set), the timecode will start at 0",
GST_TYPE_VIDEO_TIME_CODE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_FIRST_NOW,
g_param_spec_boolean ("first-timecode-to-now",
"Sets first timecode to system time",
"If true and first-timecode is unset, set it to system time "
"automatically when the first media segment is received.",
DEFAULT_FIRST_NOW, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_timecodestamper_sink_template));
@ -168,6 +176,7 @@ gst_timecodestamper_init (GstTimeCodeStamper * timecodestamper)
timecodestamper->first_tc = NULL;
timecodestamper->current_tc->config.latest_daily_jam = DEFAULT_DAILY_JAM;
timecodestamper->post_messages = DEFAULT_POST_MESSAGES;
timecodestamper->first_tc_now = DEFAULT_FIRST_NOW;
}
static void
@ -224,6 +233,9 @@ gst_timecodestamper_set_property (GObject * object, guint prop_id,
gst_video_time_code_free (timecodestamper->first_tc);
timecodestamper->first_tc = g_value_dup_boxed (value);
break;
case PROP_FIRST_NOW:
timecodestamper->first_tc_now = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -256,6 +268,9 @@ gst_timecodestamper_get_property (GObject * object, guint prop_id,
case PROP_FIRST_TIMECODE:
g_value_set_boxed (value, timecodestamper->first_tc);
break;
case PROP_FIRST_NOW:
g_value_set_boolean (value, timecodestamper->first_tc_now);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -330,6 +345,7 @@ gst_timecodestamper_sink_event (GstBaseTransform * trans, GstEvent * event)
GstSegment segment;
guint64 frames;
gchar *tc_str;
gboolean notify = FALSE;
GST_OBJECT_LOCK (timecodestamper);
if (timecodestamper->source_clock != NULL) {
@ -350,6 +366,23 @@ gst_timecodestamper_sink_event (GstBaseTransform * trans, GstEvent * event)
GST_OBJECT_UNLOCK (timecodestamper);
return FALSE;
}
if (timecodestamper->first_tc_now && !timecodestamper->first_tc) {
GDateTime *dt = g_date_time_new_now_local ();
GstVideoTimeCode *tc;
gst_timecodestamper_set_drop_frame (timecodestamper);
tc = gst_video_time_code_new_from_date_time (timecodestamper->
vinfo.fps_n, timecodestamper->vinfo.fps_d, dt,
timecodestamper->current_tc->config.flags, 0);
g_date_time_unref (dt);
timecodestamper->first_tc = tc;
notify = TRUE;
}
frames =
gst_util_uint64_scale (segment.time, timecodestamper->vinfo.fps_n,
timecodestamper->vinfo.fps_d * GST_SECOND);
@ -362,6 +395,8 @@ gst_timecodestamper_sink_event (GstBaseTransform * trans, GstEvent * event)
GST_DEBUG_OBJECT (timecodestamper, "New timecode is %s", tc_str);
g_free (tc_str);
GST_OBJECT_UNLOCK (timecodestamper);
if (notify)
g_object_notify (G_OBJECT (timecodestamper), "first-timecode");
break;
}
case GST_EVENT_CAPS:

1
gst/timecode/gsttimecodestamper.h
View file

@ -53,6 +53,7 @@ struct _GstTimeCodeStamper
GstVideoInfo vinfo;
GstClock *source_clock;
gboolean post_messages;
gboolean first_tc_now;
};
struct _GstTimeCodeStamperClass