DM368 Slice Level Decode and Display

Derek Richardson

Hi,

This post goes inline with my other posting: http://e2e.ti.com/support/embedded/f/356/p/120590/431019.aspx#431019 regarding slice level capture and encode.

The DM368 H.264 decoder user guide describes the low latency API in section 4.3 for achieving slice level decoding. My question is how to synchronize the decode with the display driver.

I assume that much like the capture driver, there is no support for achieving slice level data transfers to the display driver. Is there anything that can be done to allow the display driver to exchange decoded H.264 video at the slice level or would I have to reassemble the slices into a full frame before passing it on to the display driver?

Any insights here would be greatly appreciated!

Thanks alot

Derek

over 14 years ago

0 Yashwant Dutt over 14 years ago

TI__Genius 17215 points

Darek,

I dont think that the display h/w has the capabilty to support slice level data transfer. Also, decoder low latency API only helps in starting the decoding upon recieving first slice. It does not send back decoded frame. Decoded frames are send back only at the end of decode.

regatds

0 Derek Richardson over 14 years ago in reply to Yashwant Dutt

Intellectual 610 points

Thanks Yashwant,

So, to clarify, we can only achieve slicing in the decoder and not the display driver. Using the decoder low latency API, decoding will begin upon reception of the first slice. Once all the slices in the frame have been decoded, the full frame is then passed to the display driver for display.

Is my understanding here correct?

Thanks alot

Derek

0 Manjunath Hadli56783 over 14 years ago in reply to Derek Richardson

TI__Prodigy 650 points

That is right. Typically low latency requirement does not apply for display.

-Manju

0 Derek Richardson over 14 years ago in reply to Manjunath Hadli56783

Intellectual 610 points

Thanks Manju!

Derek

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DM368 Slice Level Decode and Display