how to build a codec on beagleboard dsp

Cheng Wang66110

Other Parts Discussed in Thread: OMAP3530

Hello everyone,

Recently I am working on building a video streaming application on the omap3530 beagleboard, and I would like to let the DSP to decode the video streaming in real-time.

My previous work was to build the dsplink on the beagle, but now I have no idea how to build a codec on the DSP part and decode the video streaming data in a timely manner?

And how can I let the ARM send data to codec on the dsp and receive decoded data from dsp?

Thanks.

Cheng

over 14 years ago

0 Maik Pflugradt over 14 years ago

Intellectual 325 points

Hello Cheng,

There is a book out there called "OMAP and DaVinci SOftware for DUMMIES" which describes the general idea of developing codecs for OMAP3530 using the DSP core.
Moreover, there is the IUNIVERSAL interface which is a good starting point to write your very own codecs. There are some examples like a FIR Filter that receives data from the GPP, executes on the DSP and sends the results back to the GPP.

You will find it here:
http://processors.wiki.ti.com/index.php?title=Getting_started_with_IUNIVERSAL

Greets,
Maik

0 Cheng Wang66110 over 14 years ago in reply to Maik Pflugradt

Intellectual 910 points

Hi Maik

Thanks for your reply.

Does there have any existing codecs that could run on the DSP by DSPLINK? I learned that the gstreamer and DMAI could do this, but I have no idea on it.

Any idea?

Thanks

Cheng

0 Maik Pflugradt over 14 years ago in reply to Cheng Wang66110

Intellectual 325 points

Yes,

You will find some ready-to-use codecs in the DVSDK (They have more than one example). They principally base on CodecEngine which uses DSPLINK to bring the GPP and DSP together.

In IUNIVERSAL which I mentioned in my last post you will also find two examples (randgen and FIR) which are actually working just like a real codec.

Have a nice weekend,

Maik

Processors

Processors forum

how to build a codec on beagleboard dsp