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video-source: Expose deinterlace-[fields, mode, tff] child properties

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Letting some control over the deinterlacing to the users
This commit is contained in:
Thibault Saunier 2016-04-29 10:29:00 -03:00
parent e40c8fcb30
commit 57543cc894
1 changed files with 57 additions and 5 deletions
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62
ges/ges-video-source.c
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@ -62,6 +62,21 @@
* <entry role="property_name"><link linkend="GESVideoSource--height">height</link></entry>
* <entry>The desired height for that source. Set to 0 if size is not mandatory, will be set to height of the current track.</entry>
* </row>
* <row>
* <entry role="property_type"><link linkend="GstDeinterlaceModes"><type>GstDeinterlaceModes</type></link></entry>
* <entry role="property_name"><link linkend="GESVideoSource--deinterlace-mode">deinterlace-mode</link></entry>
* <entry>Deinterlace Mode</entry>
* </row>
* <row>
* <entry role="property_type"><link linkend="GstDeinterlaceFields"><type>GstDeinterlaceFields</type></link></entry>
* <entry role="property_name"><link linkend="GESVideoSource--deinterlace-fields">deinterlace-fields</link></entry>
* <entry>Fields to use for deinterlacing</entry>
* </row>
* <row>
* <entry role="property_type"><link linkend="GstDeinterlaceFieldLayout"><type>GstDeinterlaceFieldLayout</type></link></entry>
* <entry role="property_name"><link linkend="GESVideoSource--deinterlace-tff">deinterlace-tff</link></entry>
* <entry>Deinterlace top field first</entry>
* </row>
* </tbody>
* </tgroup>
* </informaltable>
@ -122,7 +137,9 @@ ges_video_source_create_element (GESTrackElement * trksrc)
GESVideoSource *self;
GstElement *positioner, *videoscale, *videorate, *capsfilter, *videoconvert,
*deinterlace;
const gchar *props[] = { "alpha", "posx", "posy", "width", "height", NULL };
const gchar *positioner_props[] =
{ "alpha", "posx", "posy", "width", "height", NULL };
const gchar *deinterlace_props[] = { "mode", "fields", "tff", NULL };
if (!source_class->create_source)
return NULL;
@ -149,7 +166,8 @@ ges_video_source_create_element (GESTrackElement * trksrc)
ges_frame_positioner_set_source_and_filter (GST_FRAME_POSITIONNER
(positioner), trksrc, capsfilter);
ges_track_element_add_children_props (trksrc, positioner, NULL, NULL, props);
ges_track_element_add_children_props (trksrc, positioner, NULL, NULL,
positioner_props);
if (deinterlace == NULL) {
post_missing_element_message (sub_element, "deinterlace");
@ -161,6 +179,8 @@ ges_video_source_create_element (GESTrackElement * trksrc)
ges_source_create_topbin ("videosrcbin", sub_element, queue,
videoconvert, positioner, videoscale, videorate, capsfilter, NULL);
} else {
ges_track_element_add_children_props (trksrc, deinterlace, NULL, NULL,
deinterlace_props);
topbin =
ges_source_create_topbin ("videosrcbin", sub_element, queue,
videoconvert, deinterlace, positioner, videoscale, videorate,
@ -173,19 +193,51 @@ ges_video_source_create_element (GESTrackElement * trksrc)
return topbin;
}
static gboolean
_lookup_child (GESTimelineElement * object,
const gchar * prop_name, GObject ** element, GParamSpec ** pspec)
{
gboolean res;
gchar *clean_name;
if (!g_strcmp0 (prop_name, "deinterlace-fields"))
clean_name = g_strdup ("GstDeinterlace::fields");
else if (!g_strcmp0 (prop_name, "deinterlace-mode"))
clean_name = g_strdup ("GstDeinterlace::mode");
else if (!g_strcmp0 (prop_name, "deinterlace-tff"))
clean_name = g_strdup ("GstDeinterlace::tff");
else if (!g_strcmp0 (prop_name, "tff") ||
!g_strcmp0 (prop_name, "fields") || !g_strcmp0 (prop_name, "mode")) {
GST_DEBUG_OBJECT (object, "Not allowed to use GstDeinterlace %s"
" property without prefixing its name", prop_name);
return FALSE;
} else
clean_name = g_strdup (prop_name);
res =
GES_TIMELINE_ELEMENT_CLASS (ges_video_source_parent_class)->lookup_child
(object, clean_name, element, pspec);
g_free (clean_name);
return res;
}
static void
ges_video_source_class_init (GESVideoSourceClass * klass)
{
GESTrackElementClass *track_class = GES_TRACK_ELEMENT_CLASS (klass);
GESTrackElementClass *track_element_class = GES_TRACK_ELEMENT_CLASS (klass);
GESTimelineElementClass *element_class = GES_TIMELINE_ELEMENT_CLASS (klass);
GESVideoSourceClass *video_source_class = GES_VIDEO_SOURCE_CLASS (klass);
g_type_class_add_private (klass, sizeof (GESVideoSourcePrivate));
element_class->set_priority = _set_priority;
element_class->lookup_child = _lookup_child;
track_class->nleobject_factorytype = "nlesource";
track_class->create_element = ges_video_source_create_element;
track_element_class->nleobject_factorytype = "nlesource";
track_element_class->create_element = ges_video_source_create_element;
video_source_class->create_source = NULL;
}