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Original question:

TDA4VM: Question about multiple capture node

TDA4VM: TDA4VM

Gangatharan Kumarasamy
Prodigy 73 points

Part Number: TDA4VM

with reference to e2e.ti.com/.../tda4vm-question-about-multiple-capture-node, I have a question.

Whether all cameras have to be connected and active in order to dequeue frames by application ? (we use TIOVX framework).

say if one of the camera is not connected though configuration is done, whether dequeue stops for other node as well where the camera is connected ?

  • 0
    TI__Guru**** 490275 points

    Hi Gangadhar,

    Well, yes, by default, capture node waits for the frame to be available for all channels. But there is also mechanism by which we can set the timeout and if the frame is not available in timeout period, then capture can send out pre-provided fixed frame. This feature is enabled in the multi-camera example.

    Regards,

    Brijesh

  • 0 in reply to Brijesh Jadav
    Prodigy 73 points

    Hi,

    Within a capture node (say Node 1), it is understood that it will wait for all active channels. But, another node (say Node 2) which is independent of Node 1, also waits for the frame to be available from Node 1 (say the relevant camera is not connected). Is this observation correct ? if yes, can we overcome this scenario ?

  • 0 in reply to Gangatharan Kumarasamy
    TI__Guru**** 490275 points

    Hi Gangadharan,

    Gangatharan Kumarasamy said:
    But, another node (say Node 2) which is independent of Node 1, also waits for the frame to be available from Node 1 (say the relevant camera is not connected). Is this observation correct ?

    No, the second node instance should not wait for the camera input of node1. Both are independent node instance and they will wait for their own channels only. 

    Regards,

    Brijesh