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How to add new algorithm function in VisionSDK?

SherryC
Intellectual 935 points

Hi all,

My code base is VISION_SDK_02_10_00_00 and running SYS/BIOS.

I want to add my algorithm function in VisionSDK and run on DSP. 

I refer the documents under vision_sdk\docs. And I refer the usecase example and trace the usecase flow in VisionSDK under vision_sdk\examples\tda2xx\src\usecases\xxx.

I find the chains_xxx_StartApp() in chains_xxx.c, and I think the algorithm will start work after call the following two functions.

chains_xxx_Start(&pObj->ucObj);

Chains_prfLoadCalcEnable(TRUE, FALSE, FALSE);

But I also had no idea for how to add my algorithm in VisionSDK.

Could anyone please give me an example or some hints?

Thanks in advance.

  • 0
    TI__Expert 7765 points
    Sherry,

    Kindly refer vision_sdk\docs\VisionSDK_DevelopmentGuide.pdf section 4, especially 4.3

    You can also refer examples algorithm plugins under vision_sdk\examples\tda2xx\src\alg_plugins. Alg_ObjectDetection works on DSP which you can refer.
  • 0 in reply to Yogesh Marathe
    Prodigy 10 points
    Hi Yogesh,

    I have also experienced similar problems, I would like to ask whether the practice is wrong.

    I refer the ALGORITHM_LINK_DSP_ALG_DMA_SWMS case to create my new algorithm.
    ...
    ALGORITHM_LINK_DSP_ALG_MYALG = 26,
    ALGORITHM_LINK_DSP_ALG_MAXNUM = 27,
    ...

    and add AlgorithmLink_myalg_initPlugin() on ./vision_sdk/src/links_common/algorithm/algorithmLink_cfg.c

    my usecases flow is
    Capture->VPE->Sync_sv->Alg_DmaSwMs(DSP)->Alg_myalg(DSP)->Display_sv

    but, I can not success make, it will appear the following error message:
    ---error message line start----------------
    undefined first referenced
    symbol in file
    -------------- ---------------------
    AlgorithmLink_myalg_initPlugin C:/VISION_SDK_02_09_01_00/vision_sdk/binaries/lib/tda3xx-evm/c66xdsp_1/release/vision_sdk_lib.ae66<algorithmLink_cfg.oe66>
    error: unresolved symbols remain
    error: errors encountered during linking;
    "C:/VISION_SDK_02_09_01_00/vision_sdk/binaries/lib/tda3xx-evm/vision_sdk_c66xdsp_1_release.xe66" not built
    gmake[4]: *** [C:/VISION_SDK_02_09_01_00/vision_sdk/binaries/lib/tda3xx-evm/vision_sdk_c66xdsp_1_release.xe66] Error 1
    gmake[3]: *** [apps] Error 2
    gmake[2]: *** [apps] Error 2
    gmake[1]: *** [vision_sdk_apps] Error 2
    gmake: *** [vision_sdk] Error 2
    ---error message line end----------------

    Excuse me, this is what causes it? What I did not notice it?

    Thanks and Regards,
    JengWei
  • 0 in reply to JengWei Liaw
    TI__Expert 7765 points

    JengWei,

    Does this problem still persist? You can always build without -s option to see proper build log. From your log its clear that its a linker error although I cant see which symbol is unresolved, please build without -s to see that.