[gst-devel] appsrc example

[Bert Douglas]

Thanks.


On Fri, Aug 27, 2010 at 10:52 AM, Sandeep Prakash <123sandy at gmail.com>wrote:

>
> Hi,
>
>
> Bert Douglas wrote:
> >
> > How do i hook the two apps together so the camera can act as a video
> > source?
> >
> Not sure how to do this in separate applications. But in the same
> application these are the steps:
> 1. First of all you have to get the appsrc GstElement object.
> 2. Then hook your function to the "need-data" callback of the appsrc. Do a
> gst-inspect of appsrc
> to get the function prototype.
> 3. When the pipeline goes to PAUSED/PLAYING the callback is called. Here
> you
> can feed your camera data thru "gst_app_src_push_buffer". The buffer size
> in
> the call back is the blocksize. Set blocksize of appsrc to
> the framesize of the raw buffer from camera.
> 4. You have set the appropriate caps on the src pad of the appsrc. Use
> capsfilter for this.
>
>
>
> Bert Douglas wrote:
> >
> > Is "appsrc" suited for this job?
> >
> Yes
>
>
> Bert Douglas wrote:
> >
> > Is it possible to send frames to appsrc?  Examples do not show this.
> >
> You can push any data thru appsrc as long as the downstream elements
> recognizes that data.
>
>
> Bert Douglas wrote:
> >
> > Another big issue is how to attach the appsrc element to a pipeline
> > created in another program?
> >
> Not sure on this.
>
> Regards,
> Sandeep
> http://sandeepprakash.homeip.net
> --
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>
>
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