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How does the sd sw mosaic possible instead of offchipHDMI?

kisung cho
Expert 1460 points

Hi

in our B/D, HDMI0(onChip HDMI)  and HDCOMP(VGA) is tied. so i'm using only one sw mosaic currently.

thus i wanna using two mosaic using HDMI0(tied with HDCMP) and SD(composite). 

How does the SD sw mosaic possible instead of offchipHDMI? 

i watched "mcfw usecase/ti816x/xxx.c", if this is possilbe , can you inform me  detailed modification point?

I know  when using three sw mosaic( HDMI0 and HDMI1, SD), there is live performance issue. 

thus i think when i use two sw mosaic(HDMO0 and SD) , it will be ok. Is it Right?

Regards. CHO

  • 0
    TI__Guru 59700 points

    Yes this is possible. You can refer usecase/multich_hybrid_dvr.c for reference which has the configuration similar to what your require,

  • 0 in reply to Badri Narayanan
    Expert 1460 points


    Thank you very much for your support.

    i followed your advice.

    i changed my usecase to the VSYS_USECASE_MULTICHN_HYBRID_DVR_16CH, then i can see HDMI and SDTV sw mosaic in the dvr_rdk_demo_mcfw_api .

    but it's not the live screen, only when i put  and decode encoded data (playback) , screen is shown.(and  CIF encoded data display quality will be poor) 

    because of offchip HDMI and peripherial is expensive and SDTV is good replacement, so we must have a tw sw mosaic(OnChipHDMI(tied VGA) and SDTV) for mass production.

    what can i do for the live HDMI and SDTV mosaic display? 

    i don't think LIVE_DECODER_DUP_LINK_IDX can only display playback data.

    how can i show live decoder mosaic?  where LINK i change for that ?

    /opt/dvr # ./bin/dvr_rdk_demo_mcfw_api.out

    =========
    Main Menu
    =========

    1: VCAP + VENC + VDEC + VDIS - Progressive SD Encode + Decode
    2: VCAP + VENC + VDIS - SD Encode ONLY
    3: VCAP + VENC + VDIS - HD Encode ONLY
    4: VDEC + VDIS - SD/HD Decode ONLY
    5: VCAP + VDIS - NO Encode or Decode
    a: 16CH Hybrid DVR usecase
    b: 36CH Hybrid enc usecase
    c: 4CH Car DVR usecase

    e: Exit

    Enter Choice: a
    ---------------- DEMO DETAILS --------------
    -----------------DEMO ID: 14----------------
    --------------------------------------------
    --------------- CHANNEL DETAILS-------------
    Capture Channels => 16
    Enc Channels => Primary 16, Secondary 16
    Dec Channels => 20
    Disp Channels => 36

    Best Regards.

    CHO.  

  • 0 in reply to kisung cho
    TI__Guru 59700 points

    In /dvr_rdk/mcfw/src_linux/mcfw_api/usecases/multich_hybrid_dvr.c

    Pls change the below defines as show to check if you are able to view the live

    #define     LIVE_DECODE_MERGE_LINK_IDX             2
    #define     LIVE_DECODE_MERGE_LINK_NUM_INQUE      (4)
    #define     LIVE_DECODE_MERGE_LINK_DEI0_QIDX      (0)
    #define     LIVE_DECODE_MERGE_LINK_DEI1_QIDX      (1)
    #define     LIVE_DECODE_MERGE_LINK_VDEC_QIDX      (2)
    #define     LIVE_DECODE_MERGE_LINK_CIFDUP_QIDX    (3) 

     

    With above configuration, channel 0 -15 are live,16-35 are playback and 36-51 are secondary stream.You can choose appropriate swms window to channel map to display channel of your choice.

  • 0 in reply to Badri Narayanan
    Expert 1460 points

    Thank you Narayanan.

    HDMI, VGA, SDTV mosaic works good. i wanted this it's a standard dvr solution. 

    thank you.

    and i have a another question. below block digram is right?

    3426.HYBRIDSDTV_16D1_USECASE.doc

    Best Regards.

  • 0 in reply to kisung cho
    TI__Guru 59700 points

    Yes the usecase block diagram above is correct.