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Compiler/TDA2PXEVM: Regarding the performance of NullSource link

Heechang Kim1
Prodigy 230 points
Part Number: TDA2PXEVM

Tool/software: TI C/C++ Compiler

Dear,

When I use the NullSource link for YUV stream, the frame rate shows about 0.4 fps.

How can I improve the frame rate?

The file read mode is NULLSRC_LINK_FILEREAD_RUN_TIME.

BR,

Heechang

  • 0
    TI__Mastermind 42515 points

    Hi Heechang,

    can you press 'p' when running the usecase and see at what framerate Null_src link is getting notify call?

    The raw data has bigger size compared to the encoded stream and it is possible that reading this data takes longer time, you can check this thread where similar topic is discussed:

    Regards,

    Yordan

  • 0 in reply to Yordan Kamenov
    Prodigy 230 points

    Hi Yordan,

    The log is below. I can check the "Driver/Notify Cb = 31.17 fps".

    [IPU1-0] 27.954980 s: ### CPU [IPU1-0], LinkID [ 57],
    [IPU1-0] 27.955224 s:
    [IPU1-0] 27.955255 s: [ NULL_SRC ] Link Statistics,
    [IPU1-0] 27.955316 s: ******************************
    [IPU1-0] 27.955377 s:
    [IPU1-0] 27.955438 s: Elapsed time = 7827 msec
    [IPU1-0] 27.955865 s:
    [IPU1-0] 27.955926 s: New data Recv = 0.89 fps
    [IPU1-0] 27.955987 s: Get Full Buf Cb = 0.76 fps
    [IPU1-0] 27.956231 s: Put Empty Buf Cb = 0.76 fps
    [IPU1-0] 27.956322 s: Driver/Notify Cb = 31.17 fps
    [IPU1-0] 27.956963 s:
    [IPU1-0] 27.957329 s: Input Statistics,
    [IPU1-0] 27.957390 s:
    [IPU1-0] 27.957420 s: CH | In Recv | In Drop | In User Drop | In Process
    [IPU1-0] 27.957878 s: | FPS | FPS | FPS | FPS
    [IPU1-0] 27.957969 s: --------------------------------------------------
    [IPU1-0] 27.958030 s: 0 | 0.89 0. 0 0. 0 0.76
    [IPU1-0] 27.958335 s:
    [IPU1-0] 27.958396 s: Output Statistics,
    [IPU1-0] 27.958427 s:
    [IPU1-0] 27.958488 s: CH | Out | Out | Out Drop | Out User Drop
    [IPU1-0] 27.958762 s: | ID | FPS | FPS | FPS
    [IPU1-0] 27.958854 s: ---------------------------------------------
    [IPU1-0] 27.959220 s: 0 | 0 0.76 0. 0 0. 0

    Is there any method to improve this low frame rate?

    BR,

    Heechang

  • 0 in reply to Heechang Kim1
    TI__Guru 55685 points

    Hi Heechang,

    The problem here is same as the one described in the thread mentioned by Yordan.

    File read is slow and it takes long to read higher resolution files.

    This leads to low fps.

    You need to lower the resolution to increase the fps.

    Regards,

    Rishabh

  • 0 in reply to Rishabh Garg
    TI__Guru 55685 points

    Hi,

    I haven't heard back from you, I'm assuming you were able to resolve your issue.
    If not, just post a reply below (or create a new thread if the thread has locked due to time-out).

    Regards,
    Rishabh