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decklinksrc: Add property to drop frames that are marked as having no input signal

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=774850
This commit is contained in:
Sebastian Dröge 2016-11-25 15:03:08 +02:00
parent 331b2af050
commit aec46143bb
3 changed files with 30 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
sys/decklink/gstdecklinkaudiosrc.cpp
View file

@ -428,14 +428,20 @@ gst_decklink_audio_src_got_packet (GstElement * element,
GstClockTime timestamp;
GST_LOG_OBJECT (self,
"Got audio packet at %" GST_TIME_FORMAT " / %" GST_TIME_FORMAT,
GST_TIME_ARGS (capture_time), GST_TIME_ARGS (packet_time));
"Got audio packet at %" GST_TIME_FORMAT " / %" GST_TIME_FORMAT
", no signal %d", GST_TIME_ARGS (capture_time),
GST_TIME_ARGS (packet_time), no_signal);
g_mutex_lock (&self->input->lock);
if (self->input->videosrc) {
GstDecklinkVideoSrc *videosrc =
GST_DECKLINK_VIDEO_SRC_CAST (gst_object_ref (self->input->videosrc));
if (videosrc->drop_no_signal_frames && no_signal) {
g_mutex_unlock (&self->input->lock);
return;
}
if (videosrc->first_time == GST_CLOCK_TIME_NONE)
videosrc->first_time = packet_time;

24
sys/decklink/gstdecklinkvideosrc.cpp
View file

@ -34,6 +34,7 @@ GST_DEBUG_CATEGORY_STATIC (gst_decklink_video_src_debug);
#define DEFAULT_BUFFER_SIZE (5)
#define DEFAULT_OUTPUT_STREAM_TIME (FALSE)
#define DEFAULT_SKIP_FIRST_TIME (0)
#define DEFAULT_DROP_NO_SIGNAL_FRAMES (FALSE)
enum
{
@ -45,7 +46,8 @@ enum
PROP_VIDEO_FORMAT,
PROP_TIMECODE_FORMAT,
PROP_OUTPUT_STREAM_TIME,
PROP_SKIP_FIRST_TIME
PROP_SKIP_FIRST_TIME,
PROP_DROP_NO_SIGNAL_FRAMES
};
typedef struct
@ -195,6 +197,12 @@ gst_decklink_video_src_class_init (GstDecklinkVideoSrcClass * klass)
G_MAXUINT64, DEFAULT_SKIP_FIRST_TIME,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_DROP_NO_SIGNAL_FRAMES,
g_param_spec_boolean ("drop-no-signal-frames", "Drop No Signal Frames",
"Drop frames that are marked as having no input signal",
DEFAULT_DROP_NO_SIGNAL_FRAMES,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
templ_caps = gst_decklink_mode_get_template_caps ();
gst_element_class_add_pad_template (element_class,
gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, templ_caps));
@ -222,6 +230,7 @@ gst_decklink_video_src_init (GstDecklinkVideoSrc * self)
self->no_signal = FALSE;
self->output_stream_time = DEFAULT_OUTPUT_STREAM_TIME;
self->skip_first_time = DEFAULT_SKIP_FIRST_TIME;
self->drop_no_signal_frames = DEFAULT_DROP_NO_SIGNAL_FRAMES;
self->window_size = 64;
self->times = g_new (GstClockTime, 4 * self->window_size);
@ -293,6 +302,9 @@ gst_decklink_video_src_set_property (GObject * object, guint property_id,
case PROP_SKIP_FIRST_TIME:
self->skip_first_time = g_value_get_uint64 (value);
break;
case PROP_DROP_NO_SIGNAL_FRAMES:
self->drop_no_signal_frames = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
@ -331,6 +343,9 @@ gst_decklink_video_src_get_property (GObject * object, guint property_id,
case PROP_SKIP_FIRST_TIME:
g_value_set_uint64 (value, self->skip_first_time);
break;
case PROP_DROP_NO_SIGNAL_FRAMES:
g_value_set_boolean (value, self->drop_no_signal_frames);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
@ -594,8 +609,11 @@ gst_decklink_video_src_got_frame (GstElement * element,
GST_LOG_OBJECT (self,
"Got video frame at %" GST_TIME_FORMAT " / %" GST_TIME_FORMAT " (%"
GST_TIME_FORMAT ")", GST_TIME_ARGS (capture_time),
GST_TIME_ARGS (stream_time), GST_TIME_ARGS (stream_duration));
GST_TIME_FORMAT "), no signal: %d", GST_TIME_ARGS (capture_time),
GST_TIME_ARGS (stream_time), GST_TIME_ARGS (stream_duration), no_signal);
if (self->drop_no_signal_frames && no_signal)
return;
g_mutex_lock (&self->lock);
if (self->first_time == GST_CLOCK_TIME_NONE)

1
sys/decklink/gstdecklinkvideosrc.h
View file

@ -57,6 +57,7 @@ struct _GstDecklinkVideoSrc
gint device_number;
gboolean output_stream_time;
GstClockTime skip_first_time;
gboolean drop_no_signal_frames;
GstVideoInfo info;
GstDecklinkVideoFormat video_format;