Where to find odd/even field indicator and frame counter

Leon Pollak

Hello, all. We are running the DM8148 demo application from the last EZSDK and last Arago kernel. The input video is the interlaced one (or from TVP5151-NTSC, or from TVP7002-780i). Everything finally works fine, one call to the read() in IL_ClientOutputRawBitStreamWriteTask() from the iLclient.c file returns one field of the input stream. Perfect! The questions are: 1. How can one know looking at the OMX_BUFFERHEADERTYPE* pBufferOut address structure which fields has arrived - odd or even? 2. Where can be the frame/field counter to follow the sequence and know that nothing was lost on its way? Many thanks ahead for any hint.

over 10 years ago

0 Margarita Gashova over 10 years ago

TI__Guru* 80190 points

Hello,

Check nFrameType and nFlags of OMX_BUFFERHEADERTYPE in ilclient when you receive the buffer from FBD.

Best Regards,
Margarita

0 Leon Pollak over 10 years ago in reply to Margarita Gashova

Intellectual 960 points

Hello, Margarita.

Yes!The nFlags field solves the first my issue of the odd/even fields! Many thanks really!!!
Please, will you be so kind to answer also the second question - where the frame counter may be found? I mean, how can I in the application know that I did not miss the frames? I saw in the logger that in some (my specific circumstances) I can loose a frame, but how can I know this in the application?

A lot of thanks! Your support is really valuable!

0 Margarita Gashova over 10 years ago in reply to Leon Pollak

TI__Guru* 80190 points

Hello,

If I understand you right you could check the decode demo there is a frame counter for the decoded frames.

Best Regards,
Margarita

0 Leon Pollak over 10 years ago in reply to Margarita Gashova

Intellectual 960 points

Sorry for explaining myself bad. No, I am speaking about the capture. I need to know captured frame counter for those frames which are read in by the same read() function. The nFlags field you kindly provided is one parameter I asked for. The counter is the other one. I need to know if there were lost frames on the way, because I noticed that if there is some problem, capture tract drops frames silently. Only logger knows about this, but not the application. Again, thank you very much for your help.

0 Margarita Gashova over 10 years ago in reply to Leon Pollak

TI__Guru* 80190 points

Hello,

Are you have the Overlay Package?

Best Regards,
Margarita

0 Leon Pollak over 10 years ago in reply to Margarita Gashova

Intellectual 960 points

Yes, I do.

Do you mean that I should take it out of their by myself?
No problem, I can do this. I just thought that such important parameter should be accessible naturally.
But really, no problem, I can do this.

MANY MANY THANKS!!!

0 Leon Pollak over 10 years ago in reply to Margarita Gashova

Intellectual 960 points

Hello, Margarita.

Yes, I do have the Overlay and I found the place in the HDVPSS firmware were I can insert the sequential Frame Counter in the "application data" pointer.

The problem is that to recompile the HDVPSS code its make file requires CODEGEN_PATH_M3.
According to the name, I understand that this is the M3 toolkit.

Please, can you advice where can I find this? It seems to be absent in the EZSDK.

Thank you very much.

0 Margarita Gashova over 10 years ago in reply to Leon Pollak

TI__Guru* 80190 points

Hello,

Could you post the error, please so I could check it tomorrow.

I guess you are searching for this :
CODEGEN_PATH_M3=$(TMS470_CODEGEN_INSTALL_DIR)
TMS470_CODEGEN_INSTALL_DIR=$(DVSDK_INSTALL_DIR)/media-controller-devkit/cgt470_4_9_2

where DVSDK_INSTALL_DIR is the path to EZSDK.

Best Regards,
Margarita

0 Margarita Gashova over 10 years ago in reply to Leon Pollak

TI__Guru* 80190 points

Hello Leon,

I remember that are you trying to compile the overlay package or you trying to compile only the HDVPSS. If you are trying to compile only HDVPSS folder it won't work. Please compile the Overlay package by following the instruction in in the doc folder in EZSDK.

Best Regards,

Margarita

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Where to find odd/even field indicator and frame counter