Best way to add a filter inside PlayBin2

[Jacques Bride]

I see, I understand
Thanks
Jacques


2012/2/9 Stefan Sauer <ensonic at hora-obscura.de>:
> On 02/09/2012 10:49 AM, Jacques Bride wrote:
>> 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
>
> You don't replace the actual sink, you just tell apps to use your bin,
> which contains the effect + the actual sink.
>
> Stefan
>
>> 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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