Double buffered system

Igor

Hi,

how to rebuild an example http://wiki.davincidsp.com/index.php?title=Accessing_pixels_in_a_frame_on_DM643x into double buffered schema?

Thanks a lot.

over 16 years ago

Bernie Thompson TI over 16 years ago

TI__Mastermind 41665 points

The capture and display drivers already implement a double buffering scheme, this being said I am not entirely sure what you want to do?

Igor over 16 years ago in reply to Bernie Thompson TI

Intellectual 630 points

Dear Bernie!

Thanks for reply.

I need to do preliminary processing of one frame, then another, then combine those two into a single frame. Then do the processing of the total picture and get to the output of 30 f/s (input 60 f/s). All of it must work in a real time. That's why I need double buffering very much.

Bernie Thompson TI over 16 years ago in reply to Igor

TI__Mastermind 41665 points

This sounds similar to what Vadim was asking recently. Essentially to have two frame buffers accessable to your application you have to allocate and manage them within your application, the capture and display drivers use multiple buffers internally but you only typically have one available for use by your application code. In other words I would allocate 4 frame buffers instead of 3 and than only keep two of them queued to the driver, while the other two are owned by your application to do the processing you want.

Igor over 16 years ago in reply to Bernie Thompson TI

Intellectual 630 points

Thanks a lot, Bernie.

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Double buffered system