Best way to add a filter inside PlayBin2

[Jacques Bride]

Hello Stefan

Thanks for your reply. In other words, do you recommend that I create
a new video sink and kind of force PlayBin2 to use it instead of the
one used normally? The display on the OMAP4 pandaboard is handled by a
TI custom video sink called GstPVRVideoSink and not sure I can change
it to get same performance and platform support

Jacques

> One way is to set a custom video sink, which is a bin containing your
> effect ! autovideosink. If you can't modify the apps, you will need to
> install that custom video sink bin and set the RANK to be e.g.
> PRIMARY+10 so that it is automatically chosen.

2012/2/8 Stefan Sauer <ensonic at hora-obscura.de>:
> On 02/08/2012 06:27 PM, Jacques Bride wrote:
>> Hello
>>
>> I am developing a frame enhancement filter for the need of a video
>> control application. I am developing on a OMAP4 pandabaord on ubuntu
>> with the Texas Instruments hardware accelerated gstreamer pipeline
>> (1080PPfps decode), anyhow I think my question is rather general.  I
>> am a beginner in gstreamer so please do not hesitate to redirect me to
>> the doc if my question is already answered somewhere.
>>
>> My project consists in a video filter that transforms the yuv decoded
>> frames before being displayed (for example a sepia filter to display
>> frames in sepia color).
>>
>> What is the best way to add my filter in the installed gstreamer
>> pipeline such that it becomes part of my video chain?
>>
>> Please see below more details:
>> - I wish to use the installed and omap4 optimized gstreamer/totem
>> pipeline to enable full video stream
>> decode and display with my filter on
> One way is to set a custom video sink, which is a bin containing your
> effect ! autovideosink. If you can't modify the apps, you will need to
> install that custom video sink bin and set the RANK to be e.g.
> PRIMARY+10 so that it is automatically chosen.
>
> Stefan
>
>> .
>> - I created  a gstreamer plugin/element for my filter with the
>> gst-template framework, but how to make it part of GstPlayBin2?
>> - I looked at the pipeline graph of totem and gst-launch: they both
>> use the playbin2 module, and I would like to add my filter in-between
>> GstURIDecodeBin and GstPlaySink (input from src0 and output to
>> video_raw_sink  through gstinputselector). Is is possible to add and
>> link a new element  here without breaking the full bin? It is not
>> either on the input or the output of playbin2 so I do not really
>> understand how to just create a playbin2 element in my application and
>> delicately insert a new element inside...
>> - do I have to modify the source code of PlayBin2, add my filter,
>> recompile and install it on my board to have my added features
>> naturally enabled when I play videos? Or is it possible to tell
>> existing gst-launch and totem applications to add a user filter plugin
>> in the installed video processing?
>>
>> Thanks for your help
>> Jacques
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