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how to configure VFPC-SC5 component to generate multiple outport ?

guanghui zhao
Prodigy 80 points

My platform is 816x EVM.

My SDK is EZSDK 5_02_01_59.

How to configure VFPC-SC5 component to generate multiple outport .

Can anybody to help me ?

  • 0
    TI__Mastermind 25055 points

    Hello,

    Can you please provide more details on exactly what you want to do?

    Regards,
    Marc

  • 0 in reply to MarcPyne
    Prodigy 80 points

    Hi, Marc

    I want to modify decode_display example  to display  data  on HDMI and HD-DAC at the same time. The way to accomplish that purpose, as shown below. So ,  I want to ask is it impossible use  VFPC-SC5 to generate two output?  If so, how to configure it .

    ----------

                                                            ---->  VFDC 1 ( HDMI)

       ----> VDEC ----> VFPC-SC5

                                                            ----> VFDC 2 (HD-DAC)

     

    ---------

  • 0 in reply to guanghui zhao
    TI__Mastermind 20245 points

    VFPC-SC5 is tied to hardware scalar. It can generate only one output. so its not possible to generate two outputs of it. You should dupe the output of VFPC to make it two outputs and fed to both the VFDC.

     

    Regards,

    Hardik shah

  • 0 in reply to guanghui zhao
    TI__Intellectual 2910 points

    This usecase is certainly possible by modifying the application. What you need to do is the following:

    1. When going to Idle state for both the display components, do OMX_UseBuffer calls on data pointers from output buffers of the SC-5.

    2. The same output buffers from the SC-5 needs to be submitted to both the displays. Only thing that needs to be taken care of is that you should maintain a reference count on how many readers (the display components here) are accessing a given buffer. Only when the reference count is 0 (i.e. both the Display components are doing displaying the buffer), should you submit the buffer back into the scalar for further usage.

    3. The above method ofcourse makes some assumption, both the display have the same frame rate and resolution configured and the same frame sizes are to be used as there are no internal scalars in the display components.

    This is similar to what Hardik has suggested.

    Archith

  • 0 in reply to Archith John Bency
    Prodigy 80 points

    hi, Archith:

    Thank you very much for your reply.

    I do what you said. Now It works fine.

    thank s again!

  • 0 in reply to Archith John Bency
    Prodigy 80 points

    hi, Archith:

    Thank you very much for your reply.

    I do what you said. Now It works fine.

    thanks again!