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DM6467T codec difference between dvsdk_3 (arago) and dvsdk_2

Benny5433
Prodigy 70 points

Hello,

I am trying to run codecs developed by my company that work well on dvsdk_2, dvsdk_1_40, etc, on dvsdk_3_10_00_19.

There seem to be unexpected results on the DSP side code.

Should codecs DSP code be modified when moving to arago release? Is there a document that explains that?

What is the limit on the number of EDMA channels required by the codec?

Benny

 

  • 0
    TI__Intellectual 1970 points

    Benny,

    The number of EDMA channels required by the codec are detailed in the datasheet of the codec. Which TI codec version are you using?

    Regarding the migration to dvsdk 3.0, I will forward your query tot he relevant person.

    Regards,

    Kapil

  • 0 in reply to Kapil Ahuja
    Prodigy 70 points

     

    Kapil,

    The number of channels required by the original TI codec is 49. In our implementation there are 53 channels. In dvsdk_2_00 there was a restriction in the framework components to disallow more then 49 channels. TI advised us how to solve this, by modifying the code in

    framework_components_2_10_02/fctools/packages/ti/sdo/edma3/rm/src/configs/edma3_dm646x_cfg.c

    Under "            /* ownDmaChannels */
    Instead of

       //{0xffffffffu, 0xfffcfdbeu}, 
    use

                {0xFFF0E00Fu, 0xFF3FFFFFu},

    (same thing for /* ownTccs */)

    And then to buid the library "edma3_rm_bios.lib"


    The question is: Is there similiar restriction in dvsdk_3, and what is required to solve it.

     

    I can overcome this problem for now by removing the additional channels, and use only 49, however it seems that the source code that worked with DVSDK_2

    no longer work with DVSDK_3, so the quesiton is were any modifications done to the H.264 encoder code specifically for dvsdk_3?

    Regards,

    Benny

     

     

     

  • 0 in reply to Benny5433
    TI__Intellectual 1970 points

    Benny,

    There should be a way to increase the number of channels allocated to DSP in DVSDK_3 also (similar to what we have for DVSDK_2). Let me check with the right persons and get back to you on this.

     

    Kapil