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videocrop: allow properties to be animated by GstController

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This commit is contained in:
Daniel Molkentin 2020-01-03 15:16:02 +01:00
parent 09d4514814
commit bb1ce82e39
1 changed files with 25 additions and 4 deletions
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29
gst/videocrop/gstvideocrop.c
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@ -104,6 +104,8 @@ static void gst_video_crop_set_property (GObject * object, guint prop_id,
static void gst_video_crop_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_video_crop_before_transform (GstBaseTransform * trans,
GstBuffer * in);
static GstCaps *gst_video_crop_transform_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps, GstCaps * filter_caps);
static gboolean gst_video_crop_src_event (GstBaseTransform * trans,
@ -188,22 +190,22 @@ gst_video_crop_class_init (GstVideoCropClass * klass)
g_param_spec_int ("left", "Left",
"Pixels to crop at left (-1 to auto-crop)", -1, G_MAXINT, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_PLAYING));
GST_PARAM_MUTABLE_PLAYING | GST_PARAM_CONTROLLABLE));
g_object_class_install_property (gobject_class, PROP_RIGHT,
g_param_spec_int ("right", "Right",
"Pixels to crop at right (-1 to auto-crop)", -1, G_MAXINT, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_PLAYING));
GST_PARAM_MUTABLE_PLAYING | GST_PARAM_CONTROLLABLE));
g_object_class_install_property (gobject_class, PROP_TOP,
g_param_spec_int ("top", "Top", "Pixels to crop at top (-1 to auto-crop)",
-1, G_MAXINT, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_PLAYING));
GST_PARAM_MUTABLE_PLAYING | GST_PARAM_CONTROLLABLE));
g_object_class_install_property (gobject_class, PROP_BOTTOM,
g_param_spec_int ("bottom", "Bottom",
"Pixels to crop at bottom (-1 to auto-crop)", -1, G_MAXINT, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_PLAYING));
GST_PARAM_MUTABLE_PLAYING | GST_PARAM_CONTROLLABLE));
gst_element_class_add_static_pad_template (element_class, &sink_template);
gst_element_class_add_static_pad_template (element_class, &src_template);
@ -212,6 +214,8 @@ gst_video_crop_class_init (GstVideoCropClass * klass)
"Crops video into a user-defined region",
"Tim-Philipp Müller <tim centricular net>");
basetransform_class->before_transform =
GST_DEBUG_FUNCPTR (gst_video_crop_before_transform);
basetransform_class->transform_ip_on_passthrough = FALSE;
basetransform_class->transform_caps =
GST_DEBUG_FUNCPTR (gst_video_crop_transform_caps);
@ -504,6 +508,23 @@ gst_video_crop_propose_allocation (GstBaseTransform * trans,
decide_query, query);
}
static void
gst_video_crop_before_transform (GstBaseTransform * trans, GstBuffer * in)
{
GstVideoCrop *video_crop = GST_VIDEO_CROP (trans);
GstClockTime timestamp, stream_time;
timestamp = GST_BUFFER_TIMESTAMP (in);
stream_time =
gst_segment_to_stream_time (&trans->segment, GST_FORMAT_TIME, timestamp);
GST_DEBUG_OBJECT (video_crop, "sync to %" GST_TIME_FORMAT,
GST_TIME_ARGS (timestamp));
if (GST_CLOCK_TIME_IS_VALID (stream_time))
gst_object_sync_values (GST_OBJECT (video_crop), stream_time);
}
static GstFlowReturn
gst_video_crop_transform_ip (GstBaseTransform * trans, GstBuffer * buf)
{