TDA3x Vision SDK - How to have another variable in SysBuffer structure and pass between links?

Keerthi Raj Nagaraja89

Hello,

I have the following use case that's capturing the images and transferring them over network.

UseCase: chains_issIspSimcop_NetworkTx

IssCapture -> IssM2mIsp -> IssM2mSimcop -> Dup -> Display_Video

IssM2mIsp -> Alg_IssAewb

IssM2mIsp -> IssM2mResizer

IssM2mResizer -> Display_VideoRszB

Dup -> Null (IPU1_1)

GrpxSrc -> Display_Grpx

Now, I want the "IssCapture" link to fill in a timestamp (similar to srcTimestamp in SysBuffer) for every image frame it receives. This new timestamp is based on a counter value. To do this, I tried adding a variable in "System_Buffer" structure in "system_buffer.h". The only line I added was this

UInt64                ppsTimestamp;

With this one change, I am seeing the following assertion error when I run the usecase (The code builds fine)

[IPU1-0] 6.161654 s: Assertion @ Line: 1871 in issM2mIspLink_drv_create_delete.c: inQueId < pObj->prevLinkI!

I don't understand why "issM2mIspLink" isn't getting created and throwing this error.

If modifying system buffer isn't the right approach, please suggest a way where one can associate a certain user timestamp for each frame at capture link and send it all the way to the network link (in my use case). Are there any other memory variables that get shared between links to do this?

Regards,

Keerthi

over 7 years ago

0 Brijesh Jadav over 7 years ago

TI__Guru**** 496675 points

Keerthi,

Are you rebuilding entire vision sdk after that? System_Buffer is used by all links, so it requires to be rebuild.
This errors means the previous queid is incorrect/corrupted. please check if queid is correct.

Rgds,
Brijesh

0 Keerthi Raj Nagaraja89 over 7 years ago in reply to Brijesh Jadav

Intellectual 490 points

Hi Brijesh,

I am rebuilding the entire SDK. It builds without any errors.

In the whole SDK, the only line I added is the new timestamp variable to system buffer. I don't understand why the queid error comes up because of this. I checked that both "inQueId" and "pObj->prevLinkID" are for some reason zero. The assert expects inQueId to be lesser.

0 Brijesh Jadav over 7 years ago in reply to Keerthi Raj Nagaraja89

TI__Guru**** 496675 points

Hi Keerthi,

This assertions tell that the number of output queues supported in the output queue must be greater the input queue id. In your case, it seems that number of output queues some how is becoming 0. It seems either getting corrupted or capture is not initialized it.
Are you sure this is the only change in vision sdk? can you try removing and see if it works?

Rgds,
Brijesh

0 Brijesh Jadav over 7 years ago in reply to Brijesh Jadav

TI__Guru**** 496675 points

Hi Keerthi,

I haven't heard back from you, I'm assuming you were able to resolve your issue.
If not, just post a reply below (or create a new thread if the thread has locked due to time-out).

Regards,
Brijesh

0 Keerthi Raj Nagaraja89 over 7 years ago in reply to Brijesh Jadav

Intellectual 490 points

Hi Brijesh,

I couldn't find a solution to this issue at all. I just used a workaround for now to achieve what I wanted, which is to encode two timestamps in the 64-bit field of "srcTimestamp" variable which was already available in the system buffer structure.

I guess you can close this topic.

Thanks,

Keerthi

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TDA3x Vision SDK - How to have another variable in SysBuffer structure and pass between links?