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timecodestamper: Add new auto-resync boolean property

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This allows selecting whether we continue updating our last known
upstream timecode whenever a new one arrives or instead only keep the
last known one and from there on count up.
This commit is contained in:
Sebastian Dröge 2019-10-23 15:03:09 +03:00
parent 96aa9b5633
commit fc463b9ebc
2 changed files with 21 additions and 5 deletions
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25
gst/timecode/gsttimecodestamper.c
View file

@ -60,6 +60,7 @@ enum
PROP_0,
PROP_SOURCE,
PROP_SET,
PROP_AUTO_RESYNC,
PROP_DROP_FRAME,
PROP_POST_MESSAGES,
PROP_SET_INTERNAL_TIMECODE,
@ -72,6 +73,7 @@ enum
#define DEFAULT_SOURCE GST_TIME_CODE_STAMPER_SOURCE_INTERNAL
#define DEFAULT_SET GST_TIME_CODE_STAMPER_SET_KEEP
#define DEFAULT_AUTO_RESYNC TRUE
#define DEFAULT_DROP_FRAME FALSE
#define DEFAULT_POST_MESSAGES FALSE
#define DEFAULT_SET_INTERNAL_TIMECODE NULL
@ -219,6 +221,12 @@ gst_timecodestamper_class_init (GstTimeCodeStamperClass * klass)
"Choose whether timecodes should be overridden or not",
GST_TYPE_TIME_CODE_STAMPER_SET,
DEFAULT_SET, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_AUTO_RESYNC,
g_param_spec_boolean ("auto-resync",
"Auto Resync",
"If true resync last known timecode from upstream, otherwise only "
"count up from the last known one",
DEFAULT_AUTO_RESYNC, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_DROP_FRAME,
g_param_spec_boolean ("drop-frame", "Drop Frame",
"Use drop-frame timecodes for 29.97 and 59.94 FPS",
@ -245,8 +253,8 @@ gst_timecodestamper_class_init (GstTimeCodeStamperClass * klass)
g_object_class_install_property (gobject_class, PROP_LTC_AUTO_RESYNC,
g_param_spec_boolean ("ltc-auto-resync",
"LTC Auto Resync",
"If true and LTC timecode is used, it will be automatically "
"resynced if it drifts, otherwise it will only be initialised once",
"If true the LTC timecode will be automatically resynced if it drifts, "
"otherwise it will only be counted up from the last known one",
DEFAULT_LTC_AUTO_RESYNC, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_RTC_MAX_DRIFT,
g_param_spec_uint64 ("rtc-max-drift",
@ -258,8 +266,8 @@ gst_timecodestamper_class_init (GstTimeCodeStamperClass * klass)
g_object_class_install_property (gobject_class, PROP_RTC_AUTO_RESYNC,
g_param_spec_boolean ("rtc-auto-resync",
"RTC Auto Resync",
"If true and RTC timecode is used, it will be automatically "
"resynced if it drifts, otherwise it will only be initialised once",
"If true the RTC timecode will be automatically resynced if it drifts, "
"otherwise it will only be counted up from the last known one",
DEFAULT_RTC_AUTO_RESYNC, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_TIMECODE_OFFSET,
g_param_spec_int ("timecode-offset",
@ -295,6 +303,7 @@ gst_timecodestamper_init (GstTimeCodeStamper * timecodestamper)
timecodestamper->tc_source = GST_TIME_CODE_STAMPER_SOURCE_INTERNAL;
timecodestamper->tc_set = GST_TIME_CODE_STAMPER_SET_KEEP;
timecodestamper->tc_auto_resync = DEFAULT_AUTO_RESYNC;
timecodestamper->drop_frame = DEFAULT_DROP_FRAME;
timecodestamper->post_messages = DEFAULT_POST_MESSAGES;
timecodestamper->set_internal_tc = NULL;
@ -407,6 +416,9 @@ gst_timecodestamper_set_property (GObject * object, guint prop_id,
timecodestamper->tc_set = (GstTimeCodeStamperSet)
g_value_get_enum (value);
break;
case PROP_AUTO_RESYNC:
timecodestamper->tc_auto_resync = g_value_get_boolean (value);
break;
case PROP_DROP_FRAME:
timecodestamper->drop_frame = g_value_get_boolean (value);
gst_timecodestamper_update_drop_frame (timecodestamper);
@ -487,6 +499,9 @@ gst_timecodestamper_get_property (GObject * object, guint prop_id,
case PROP_SET:
g_value_set_enum (value, timecodestamper->tc_set);
break;
case PROP_AUTO_RESYNC:
g_value_set_boolean (value, timecodestamper->tc_auto_resync);
break;
case PROP_DROP_FRAME:
g_value_set_boolean (value, timecodestamper->drop_frame);
break;
@ -894,7 +909,7 @@ gst_timecodestamper_transform_ip (GstBaseTransform * vfilter,
/* If we have a new timecode on the incoming frame, update our last known
* timecode or otherwise increment it by one */
if (tc_meta) {
if (tc_meta && (!timecodestamper->last_tc || timecodestamper->tc_auto_resync)) {
gchar *tc_str;
if (timecodestamper->last_tc)

1
gst/timecode/gsttimecodestamper.h
View file

@ -77,6 +77,7 @@ struct _GstTimeCodeStamper
/* Properties, protected by object lock */
GstTimeCodeStamperSource tc_source;
GstTimeCodeStamperSet tc_set;
gboolean tc_auto_resync;
gboolean drop_frame;
gboolean post_messages;
GstVideoTimeCode *set_internal_tc;