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TDA4VM: How to make different application access camera data at the same time?

hutian
Expert 1785 points
Part Number: TDA4VM

Hi experts,

Our use case wants two or more application access camera data at the same time, i know currently Camera Module is integrated as a OpenVx Node. 

Whether it is possible to make different application consume the Capture Node at the same time?

Thanks,

Hutian 

  • 0
    TI__Guru**** 475745 points

    Hi Hutian,

    I am sorry i did not get your question. Do you mean you want to use capture output in different application? You could do it by just connecting capture output to different processing nodes. 

    In the current application, capture output is connected to VISS for ISP processing. But you could have your node and can capture output to this node. 

    Regards,

    Brijesh

  • 0 in reply to Brijesh Jadav
    Expert 1785 points

    Hi Brijesh,

    Sorry to explain it not clear, There are two application running in A72(Linux), Whether it is possible to let these two process accessing the capture data at the same time?

    process_A --> capture node->

                                                       -----> CSI_RX0

    process_B --> capture node-> 

    Thanks,

    Hutian

  • 0 in reply to hutian
    TI__Guru**** 475745 points

    Hi Hutian,

    Capture can be accessed only from one process for the same CSI instances. 

    But what we can do is, we can share the capture output data to another process and that way, we can make capture output to be available to another process. 

    Could you please help me understand, why two processes are required? Is it possible to merge them into single process? 

    Regards,

    Brijesh

  • 0 in reply to Brijesh Jadav
    Expert 1785 points

    Hi Brijesh,

    Our use case wants a single TDA4VM runing two functions(Surround View & Driving Recorder). These two functions are individual running in different process.

    Both of them are consuming the same camera data.Could you share some tech-skills regarding "How to share the Camera Data" ? 

    Thanks,

    Hutian

  • 0 in reply to hutian
    TI__Guru**** 475745 points

    Hi Hutian,

    But why do you need difference process for SRC and recording functionality? Isn't it possible to keep them in same process, may be even in the same graph?

    Regards,

    Brijesh

  • 0 in reply to Brijesh Jadav
    Expert 1785 points

    Hi Brijesh,

    Thanks for your advice, i will keep them in same process.

    Regards,

    Hutian