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camerabin2: Adding a filter to wrappercamerabinsrc

Browse source 
Camerabin2 allows setting a filter for image, video or viewfinder, but
not one filter for all three at the same time. I added a filter to
wrappercamerabinsrc to allow setting a global filter when using this
source.

https://bugzilla.gnome.org/show_bug.cgi?id=649822
This commit is contained in:
Luciana Fujii Pontello 2011-05-09 14:35:42 -03:00 committed by Thiago Santos
parent 65d74fa2bf
commit 23576af52a
2 changed files with 68 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

68
gst/camerabin2/gstwrappercamerabinsrc.c
View file

@ -37,7 +37,8 @@
enum
{
PROP_0,
PROP_VIDEO_SRC
PROP_VIDEO_SRC,
PROP_VIDEO_SRC_FILTER
};
GST_DEBUG_CATEGORY (wrapper_camera_bin_src_debug);
@ -58,6 +59,10 @@ gst_wrapper_camera_bin_src_dispose (GObject * object)
gst_object_unref (self->app_vid_src);
self->app_vid_src = NULL;
}
if (self->app_vid_filter) {
gst_object_unref (self->app_vid_filter);
self->app_vid_filter = NULL;
}
gst_caps_replace (&self->image_capture_caps, NULL);
G_OBJECT_CLASS (parent_class)->dispose (object);
@ -89,6 +94,19 @@ gst_wrapper_camera_bin_src_set_property (GObject * object,
gst_object_ref (self->app_vid_src);
}
break;
case PROP_VIDEO_SRC_FILTER:
if (GST_STATE (self) != GST_STATE_NULL) {
GST_ELEMENT_ERROR (self, CORE, FAILED,
("camerasrc must be in NULL state when setting the video source filter element"),
(NULL));
} else {
if (self->app_vid_filter)
gst_object_unref (self->app_vid_filter);
self->app_vid_filter = g_value_get_object (value);
if (self->app_vid_filter)
gst_object_ref (self->app_vid_filter);
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (self, prop_id, pspec);
break;
@ -108,6 +126,12 @@ gst_wrapper_camera_bin_src_get_property (GObject * object,
else
g_value_set_object (value, self->app_vid_src);
break;
case PROP_VIDEO_SRC_FILTER:
if (self->video_filter)
g_value_set_object (value, self->video_filter);
else
g_value_set_object (value, self->app_vid_filter);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (self, prop_id, pspec);
break;
@ -352,7 +376,8 @@ gst_wrapper_camera_bin_src_max_zoom_cb (GObject * self, GParamSpec * pspec,
* @bcamsrc: camerasrc object
*
* This function creates and links the elements of the camerasrc bin
* videosrc ! cspconv ! capsfilter ! crop ! scale ! capsfilter ! tee name=t !
* videosrc ! cspconv ! srcfilter ! cspconv ! capsfilter ! crop ! scale ! \
* capsfilter ! tee name=t
* t. ! ... (viewfinder pad)
* t. ! output-selector name=outsel
* outsel. ! (image pad)
@ -366,6 +391,9 @@ gst_wrapper_camera_bin_src_construct_pipeline (GstBaseCameraSrc * bcamsrc)
GstWrapperCameraBinSrc *self = GST_WRAPPER_CAMERA_BIN_SRC (bcamsrc);
GstBin *cbin = GST_BIN (bcamsrc);
GstElement *tee;
GstElement *filter_csp;
GstElement *src_csp;
GstElement *capsfilter;
gboolean ret = FALSE;
GstElement *videoscale;
GstPad *vf_pad;
@ -507,6 +535,37 @@ gst_wrapper_camera_bin_src_construct_pipeline (GstBaseCameraSrc * bcamsrc)
gst_pad_set_active (self->imgsrc, TRUE); /* XXX ??? */
gst_pad_set_active (self->vidsrc, TRUE); /* XXX ??? */
}
/* Do this even if pipeline is constructed */
if (self->video_filter) {
/* check if we need to replace the current one */
if (self->video_filter != self->app_vid_filter) {
gst_bin_remove (cbin, self->video_filter);
gst_object_unref (self->video_filter);
self->video_filter = NULL;
filter_csp = gst_bin_get_by_name (cbin, "filter-colorspace");
gst_bin_remove (cbin, filter_csp);
gst_object_unref (filter_csp);
filter_csp = NULL;
}
}
if (!self->video_filter) {
if (self->app_vid_filter) {
self->video_filter = gst_object_ref (self->app_vid_filter);
filter_csp = gst_element_factory_make ("ffmpegcolorspace",
"filter-colorspace");
gst_bin_add_many (cbin, self->video_filter, filter_csp, NULL);
src_csp = gst_bin_get_by_name (cbin, "src-colorspace");
capsfilter = gst_bin_get_by_name (cbin, "src-capsfilter");
if (gst_pad_is_linked (gst_element_get_static_pad (src_csp, "src")))
gst_element_unlink (src_csp, capsfilter);
if (!gst_element_link_many (src_csp, self->video_filter, filter_csp,
capsfilter, NULL))
goto done;
}
}
ret = TRUE;
self->elements_created = TRUE;
done:
@ -1102,6 +1161,10 @@ gst_wrapper_camera_bin_src_class_init (GstWrapperCameraBinSrcClass * klass)
g_param_spec_object ("video-source", "Video source",
"The video source element to be used",
GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_VIDEO_SRC_FILTER,
g_param_spec_object ("video-source-filter", "Video source filter",
"Optional video source filter element",
GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gstelement_class->change_state = gst_wrapper_camera_bin_src_change_state;
@ -1148,6 +1211,7 @@ gst_wrapper_camera_bin_src_init (GstWrapperCameraBinSrc * self,
self->video_renegotiate = TRUE;
self->image_renegotiate = TRUE;
self->mode = GST_BASE_CAMERA_SRC_CAST (self)->mode;
self->app_vid_filter = NULL;
}
gboolean

2
gst/camerabin2/gstwrappercamerabinsrc.h
View file

@ -74,6 +74,7 @@ struct _GstWrapperCameraBinSrc
/* source elements */
GstElement *src_vid_src;
GstElement *video_filter;
GstElement *src_filter;
GstElement *src_zoom_crop;
GstElement *src_zoom_scale;
@ -94,6 +95,7 @@ struct _GstWrapperCameraBinSrc
/* Application configurable elements */
GstElement *app_vid_src;
GstElement *app_vid_filter;
/* Caps that videosrc supports */
GstCaps *allowed_caps;