Starterware/TDA2EVM5777: How to config VIP to capture BT656 signal which has h_porch(h_blanking) and v_porch(v_blanking) info?

wade

Part Number: TDA2EVM5777

Tool/software: Starterware

Hi Guys,

We have a special use case on TDA2X platform, that is convert a HDMI output to BT656 signal, and connect to camera interface.

The question is, the HDMI signal has porch(blanking) info, for example , the v_porch/v_blanking is 2 pixels, the h_porch/h_blanking is 30 pixels. So, the TDA2X captured this image with a black bar on top and left side. I'd like to know how to config the VIP part to capture the valid image area(skip the porch/blanking info)?

Thank you very much!

waley

over 6 years ago

0 Yordan Kamenov over 6 years ago

TI__Mastermind 42515 points

Hi Waley,

I have forwarded your question ti ISS expert.

Regards,
Yordan

0 Brijesh Jadav over 6 years ago in reply to Yordan Kamenov

TI__Guru**** 398480 points

Hi Waley,

You could always trim off extra blanking pixels using trimmer module in VIP. VIP has inbuilt trimmer, you can program it to remove extra pixels.
Driver supports this module and it can be configured using below variables.

vipPortCfg.actCropEnable = TRUE
vipPortCfg.actCropCfg.srcNum = 0
vipPortCfg.actCropCfg.cropCfg.cropStartX
vipPortCfg.actCropCfg.cropCfg.cropStartY
vipPortCfg.actCropCfg.cropCfg.cropWidth
vipPortCfg.actCropCfg.cropCfg.cropHeight

Rgds,
Brijesh

0 wade over 6 years ago in reply to Brijesh Jadav

Intellectual 340 points

Hi Brijesh,

Thank you very much!

Best Regards,
waley

0 Brijesh Jadav over 6 years ago in reply to wade

TI__Guru**** 398480 points

Hi,

does it solve the issue? Can we close this thread?

Rgds,

Brijesh

0 wade over 6 years ago in reply to Brijesh Jadav

Intellectual 340 points

Yes, the problem is solved, please close this case. Thanks a lot!

Processors

Processors forum

Starterware/TDA2EVM5777: How to config VIP to capture BT656 signal which has h_porch(h_blanking) and v_porch(v_blanking) info?