Using only one plugin in a pipeline

[Siber]

Hello everybody!

Can I use only one plugin in a pipeline for my application? I want to make a very simple application: I read some data from a file (e.g with function fread(....)), then pass the buffer filled with a data from the file to a decoder and at last I save decoded data to another file (e.g. with function fwrite(...)). I know that there are special plugins: filesrc and filesink, but still can I escape necessity of using this plugins and read and save data "manually"?

[Kapil Agrawal]

You have to use two more plugins appsrc &appsink
So your application will look like

fread -> {appsrc ! decoder ! appsink } ->fwrite

Best Luck
Kapil

On Tue, Sep 27, 2011 at 7:28 PM, Siber <[hidden email]> wrote:

Hello everybody!

Can I use only one plugin in a pipeline for my application? I want to make a
very simple application: I read some data from a file (e.g with function
fread(....)), then pass the buffer filled with a data from the file to a
decoder and at last I save decoded data to another file (e.g. with function
fwrite(...)). I know that there are special plugins: filesrc and filesink,
but still can I escape necessity of using this plugins and read and save
data "manually"?

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(Consultancy - Multimedia, Gstreamer, ffmpeg, Streaming for platforms- linux, windows, TI, android)



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[Thiago Sousa Santos]

On Tue, 2011-09-27 at 06:58 -0700, Siber wrote:
> Hello everybody!
>
> Can I use only one plugin in a pipeline for my application? I want to make a
> very simple application: I read some data from a file (e.g with function
> fread(....)), then pass the buffer filled with a data from the file to a
> decoder and at last I save decoded data to another file (e.g. with function
> fwrite(...)). I know that there are special plugins: filesrc and filesink,
> but still can I escape necessity of using this plugins and read and save
> data "manually"?

To do that you'd need 3 elements in your pipeline: appsrc !
<yourdecoder ! appsink

Check the documentation for them here:
http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-libs/html/gst-plugins-base-libs-appsrc.html
http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-libs/html/gst-plugins-base-libs-appsink.html

Appsrc and appsink are elements that provide an API for feeding and
receiving buffers from the pipeline.

--
Thiago

>
> --
> View this message in context: http://gstreamer-devel.966125.n4.nabble.com/Using-only-one-plugin-in-a-pipeline-tp3847453p3847453.html
> Sent from the GStreamer-devel mailing list archive at Nabble.com.
> _______________________________________________
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> [hidden email]
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[Siber]

Thank you all for attention and for fast and complete advice! It helped!)