vvas_xdefunnel¶
The Gstreamer plug-in, vvas_xdefunnel, is responsible for de-serializing data received from the vvas_xfunnel plug-in. This plug-in dynamically creates and removes source pads based on events received from the vvas_xfunnel plug-in.
For vvas_xdefunnel implementation details, refer to vvas_xdefunnel source code
This plug-in supports:
Single sink pad, multiple source pads.
Source pads are sometimes pad.
Source pads will be added and removed dynamically.
vvas_xdefunnel supports all caps.
Control Parameters and Plug-in Signals¶
The following table lists the GStreamer plug-in signals supported by the vvas_xdefunnel plug-in.
Table 11: vvas_xdefunnel Plug-in signals
Signal Name |
Description |
callback |
|---|---|---|
pad-added |
This signal will be emitted when new source pad is created. |
void user_function (GstElement* object, GstPad* arg0, gpointer user_data); |
pad-removed |
This signal will be emitted when a source pad is removed. |
void user_function (GstElement* object, GstPad* arg0, gpointer user_data); |
no-more-pads |
This signal indicates the element does not expect any more pads. |
void user_function (GstElement* object, gpointer user_data); |
The following table lists the GStreamer plug-in properties supported by the vvas_xdefunnel plug-in.
Table 12: vvas_xdefunnel Plug-in Properties
Property Name |
Type |
Default |
Description |
|---|---|---|---|
active-pad |
GST_TYPE_PAD |
Read Only property |
Source pad to which current buffer is being pushed to |
Example Pipelines¶
gst-launch-1.0 -v \
videotestsrc num-buffers=50 pattern=0 ! video/x-raw,format=NV12,width=640,height=480 ! funnel.sink_0 \
videotestsrc num-buffers=80 pattern=19 ! video/x-raw,format=NV12,width=640,height=480 ! funnel.sink_1 \
vvas_xfunnel name=funnel ! identity ! vvas_xdefunnel name=defunnel \
defunnel.src_0 ! queue ! filesink location=sink_0.yuv \
defunnel.src_1 ! queue ! filesink location=sink_1.yuv