How to add dsp alg link as a process link following ipcFramesOutHost.

Happy Lee

Prodigy 125 points

I want to just use the DSP for frame analyse.Attached below is the mainly flow:

1,Set the my DSP algorithm as the process link( ipcFramesOutHostPrm.baseCreateParams.processLink).

2, Read the frame file from hard disk on host A8.

3,Use Vdis_putFullVideoFrames() to send the frame.

This is my plan to framework of my demo.

my question is: what's the next link of ipcFramesOutHost ?

In the past when I did the jpeg DEC work, I use the following link design:

Is there any suggestion for the requirement "hard disk read ----------DSP ALG-------------hard dsk write" ?

over 11 years ago

0 Margarita Gashova over 11 years ago

TI__Guru* 80190 points

Hello,

What is the software release that you are using here?

Best Regards,

Margarita

0 Happy Lee over 11 years ago in reply to Margarita Gashova

Prodigy 125 points

DM8168_DVRRDK_V03.00.00.00

0 Happy Lee over 11 years ago in reply to Margarita Gashova

Prodigy 125 points

I have read a couple of threads from our E2E forum and I already got the "helloworld_alg" package which is based on XDM and alg link interface algorithm. But I don't know how to design my link framework and Demo to invoke that helloworld DSP algorithm.

0 Happy Lee over 11 years ago in reply to Margarita Gashova

Prodigy 125 points

Is there anyone can help me? I will appreciate your help...

0 Badri Narayanan over 10 years ago in reply to Happy Lee

TI__Guru 59700 points

Your link connection should be

ipcFramesOutHost -> (nextLink) ipcFramesInDsp ->dspAlgLink

Depending on whether your algLink outputs video frames or meta data you will have to connect output of dspAlgLink to ipcFramesOut or ipcBitsOut.

The default algLink in dvr_rdk only supports ipcBitsOut output. You will have to enhance it if you require ipcFramesOut

You can refer this example where YUV frames are read from file and encoded instead of processed by dspAlgLink which may be useful http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/p/292593/1022962.aspx#1022962

0 Happy Lee over 10 years ago in reply to Badri Narayanan

Prodigy 125 points

Hi Badri,

I really thank you very much for your reply.

According your suggestion, I'm doing the code work and designing the link structure which is attached below:

ipcFramesOutHost -> (nextLink) ipcFramesInDsp ->dspAlgLink->ipcBitsOutDsp->ipcBitsInHost.

It's very similar with the SCD demo in dvr_rdk, but my confusion is how to use ipcbits to get the frames from the dsp out end.

In addition, my second question is how to make the the ipcFramesOut data structure match with the my DSP data stucture?

Processors

Processors forum

How to add dsp alg link as a process link following ipcFramesOutHost.