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decklinkvideosrc: Add read-only "signal" property

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=780367
This commit is contained in:
Georg Lippitsch 2017-03-21 18:16:52 +01:00 committed by Sebastian Dröge
parent 971a481a8c
commit 7ee593e493
1 changed files with 12 additions and 1 deletions
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13
sys/decklink/gstdecklinkvideosrc.cpp
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@ -47,7 +47,8 @@ enum
PROP_TIMECODE_FORMAT, PROP_TIMECODE_FORMAT,
PROP_OUTPUT_STREAM_TIME, PROP_OUTPUT_STREAM_TIME,
PROP_SKIP_FIRST_TIME, PROP_SKIP_FIRST_TIME,
PROP_DROP_NO_SIGNAL_FRAMES PROP_DROP_NO_SIGNAL_FRAMES,
PROP_SIGNAL
}; };
typedef struct typedef struct
@ -203,6 +204,11 @@ gst_decklink_video_src_class_init (GstDecklinkVideoSrcClass * klass)
DEFAULT_DROP_NO_SIGNAL_FRAMES, DEFAULT_DROP_NO_SIGNAL_FRAMES,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS))); (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_SIGNAL,
g_param_spec_boolean ("signal", "Input signal available",
"True if there is a valid input signal available",
FALSE, (GParamFlags) (G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)));
templ_caps = gst_decklink_mode_get_template_caps (TRUE); templ_caps = gst_decklink_mode_get_template_caps (TRUE);
gst_element_class_add_pad_template (element_class, gst_element_class_add_pad_template (element_class,
gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, templ_caps)); gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, templ_caps));
@ -346,6 +352,9 @@ gst_decklink_video_src_get_property (GObject * object, guint property_id,
case PROP_DROP_NO_SIGNAL_FRAMES: case PROP_DROP_NO_SIGNAL_FRAMES:
g_value_set_boolean (value, self->drop_no_signal_frames); g_value_set_boolean (value, self->drop_no_signal_frames);
break; break;
case PROP_SIGNAL:
g_value_set_boolean (value, !self->no_signal);
break;
default: default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break; break;
@ -801,12 +810,14 @@ gst_decklink_video_src_create (GstPushSrc * bsrc, GstBuffer ** buffer)
if (f->no_signal) { if (f->no_signal) {
if (!self->no_signal) { if (!self->no_signal) {
self->no_signal = TRUE; self->no_signal = TRUE;
g_object_notify (G_OBJECT (self), "signal");
GST_ELEMENT_WARNING (GST_ELEMENT (self), RESOURCE, READ, ("No signal"), GST_ELEMENT_WARNING (GST_ELEMENT (self), RESOURCE, READ, ("No signal"),
("No input source was detected - video frames invalid")); ("No input source was detected - video frames invalid"));
} }
} else { } else {
if (self->no_signal) { if (self->no_signal) {
self->no_signal = FALSE; self->no_signal = FALSE;
g_object_notify (G_OBJECT (self), "signal");
GST_ELEMENT_INFO (GST_ELEMENT (self), RESOURCE, READ, ("Signal found"), GST_ELEMENT_INFO (GST_ELEMENT (self), RESOURCE, READ, ("Signal found"),
("Input source detected")); ("Input source detected"));
} }