Dynamic Imxg2dcompositor

[chrisplus3]

Hi there,

I am trying to build a dynamic pipeline using the Imxg2dcompositor.
The following is the gst-launch command inside a shell file.

----------------------------------------------------------------------------------------------------
MARGIN=2
JPEGPIPE="caps="application/x-rtp,encoding-name=JPEG,payload=26" !
rtpjpegdepay ! jpegparse ! queue max-size-time=0 max-size-buffers=0 !
imxvpudec"

gst-launch-1.0 imxg2dcompositor name=comp background-color=0xff0000 \
	sink_0::alpha=1	sink_0::fill_color=0x99999999 sink_0::rotation=0
sink_0::keep-aspect-ratio=false \
		sink_0::xpos=0 sink_0::ypos=0 sink_0::width=640 sink_0::height=800 \
		sink_0::left-margin=0 sink_0::right-margin=$MARGIN sink_0::top-margin=0
sink_0::bottom-margin=0 \
	sink_1::alpha=1	sink_1::fill_color=0x99999999 sink_1::rotation=0
sink_1::keep-aspect-ratio=false \
		sink_1::xpos=640 sink_1::ypos=0 sink_1::width=640 sink_1::height=800 \
		sink_1::left-margin=$MARGIN sink_1::right-margin=0 sink_1::top-margin=0
sink_1::bottom-margin=0 \
	! imxg2dvideosink sync=false async=false use-vsync=true \
	udpsrc port=5004 $JPEGPIPE ! comp.sink_0 \
	udpsrc port=5005 $JPEGPIPE ! comp.sink_1
----------------------------------------------------------------------------------------------------

Now I want to build the elements one by one and finally link the pipeline.
I managed to build the dynamic pipeline in C++ without the compositor (only
one udpsource).
But there is not a single example for the Imxg2dcompositor in C/C++.

So how can I "convert" the gst-launch command to C/C++ code, to be able to
(e.g.) change the position of every element during runtime ?


Thanks in advance!



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