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AM5718: CPU load estimation

Hitoshi Sugawara
Mastermind 19960 points
Part Number: AM5718

Hi Experts,

I would like to know the rough CPU load estimation for the function as follows:

with 1080p 30fps using IVA.

Case 1:
- Two video data through CSI2
- Overlay the two picture data by A15 or C66x.
- H.264 encode

Case 2:
- H.264 decode and overly the two picture data 
- output through HDMI

Thank you very much for your kind check.
Best regards,
Hitoshi Sugawara

  • 0
    TI__Mastermind 22946 points
    Case1:
    - There is negligible CPU MHz consumption for CSI-2 based video capture.
    - Overlay can happen in GC320 - 2D graphics acceleration and hence again negligible CPU load.
    - Negligible CPU MHz consumption for H.264 encode as it happens on IVA

    Case2:
    - Negligible CPU load for video decode, overlay can happen in GC320 if you want the output in memory. If the overlay output needs to be displayed, then the overlay can happen in DSS (hardware accelerated) on the fly before display of the content
    - Negligible CPU load

    In all these hardware accelerated processing, the linux driver and the codec engine consume minimal CPU load to prepare data buffer, trigger the process call and wait for the process to be completed, receive the buffers.
  • 0 in reply to Manisha Agrawal
    TI__Mastermind 19960 points
    Thank you for your prompt reply.
    It helps me a lot.
    Best regards,
    Hitoshi