DVR RDK 04.01.00.02 SCD Callback

Hi Group,

I'm currently using the DM 8168 DVR-RDK 04.01.00.02, and there is a problem as follow:

 I use Vsys_registerEventHandler() or  Vcap_registerBitsCallback(),  but there is no event at all.

I refer to the following:

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/p/348348/1224097.aspx#1224097

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/t/311088.aspx

But no effect. I don't know my code is correct or not. Could you help me ?

My code :

    VCAP_CALLBACK_S callback;

    Int32 status;
    UInt32 chId;
    Media_G2_Scd_ChInfo *pChInfo;
    UInt32 i;
    UInt8 *curVirtAddr;

    gMedia_G2_SCDCtrl.chIdTrack            = 0;
    /* As default layout is 4x4 widnows */
    gMedia_G2_SCDCtrl.numberOfWindows      = MEDIA_G2_SCD_MAX_CHANNELS;

    for(chId=0; chId<VENC_CHN_MAX; chId++)
    {
        pChInfo = &gMedia_G2_SCDCtrl.chInfo[chId];
        pChInfo->chOnMosaic           = FALSE;
        pChInfo->prevFrameObjects     = 0;
        pChInfo->prevFramePolygons    = 0;
        pChInfo->scdVaEvent           = 0;
        pChInfo->updateStaticObj      = FALSE;
        pChInfo->initialise           = FALSE;
        pChInfo->prevWinIdTrack       = 0xFF;
        pChInfo->gridPresent          = FALSE;
        pChInfo->updateGrid           = FALSE;
        pChInfo->enableMotionTracking = FALSE;
        pChInfo->enableGpxEvntDisplay = FALSE;
        for(i = 0; i<MEDIA_G2_SCD_VA_MAX_POLGON; i++)
        {
           pChInfo->staticObject[i].presentOnDisplay = FALSE;
        }
        for(i = 0; i<MEDIA_G2_SCD_VA_MAX_OBJECTS; i++)
        {
           pChInfo->dynamicObject[i].presentOnDisplay = FALSE;
        }
    }

    gMedia_G2_SCDCtrl.exitWrThr              = FALSE;
    gMedia_G2_SCDCtrl.isWrThrStopDone        = FALSE;
    gMedia_G2_SCDCtrl.prevNumberOfWindows    = gMedia_G2_SCDCtrl.numberOfWindows;

    gMedia_G2_SCDCtrl.startChId              = 0;
    gMedia_G2_SCDCtrl.layoutUpdated           = FALSE;

    callback.newDataAvailableCb = Media_G2_bitsWriteCbFxn_SCD;
    for(i = 0; i < MEDIA_G2_MAX_SCD_VA_EVENT; i++)
    {
        status = Vsys_allocBuf(MEDIA_G2_SCD_BUF_HEAP_SR_ID, MEDIA_G2_MAX_SCD_VA_EVENT_GPX_DISPLAY_BUF_SIZE, MEDIA_G2_SCD_BUFFER_ALIGNMENT, &gMedia_G2_SCDCtrl.bufInfo[i]);
        OSA_assert(status==OSA_SOK);
        curVirtAddr = gMedia_G2_SCDCtrl.bufInfo[i].virtAddr;
        switch(i)
        {
            case MEDIA_G2_SCD_VA_EVT_TZ:
              OSA_assert(sizeof(gMCFW_gpxTiScdVaTzRgb_186x14_rgb)<=MEDIA_G2_MAX_SCD_VA_EVENT_GPX_DISPLAY_BUF_SIZE);
              memcpy(curVirtAddr, gMCFW_gpxTiScdVaTzRgb_186x14_rgb, sizeof(gMCFW_gpxTiScdVaTzRgb_186x14_rgb));
              break;
            case MEDIA_G2_SCD_VA_EVT_OC:
              OSA_assert(sizeof(gMCFW_gpxTiScdVaOcRgb_186x14_rgb)<=MEDIA_G2_MAX_SCD_VA_EVENT_GPX_DISPLAY_BUF_SIZE);
              memcpy(curVirtAddr, gMCFW_gpxTiScdVaOcRgb_186x14_rgb, sizeof(gMCFW_gpxTiScdVaOcRgb_186x14_rgb));
              break;
            case MEDIA_G2_SCD_VA_EVT_TD:
              OSA_assert(sizeof(gMCFW_gpxTiScdVaTdRgb_186x14_rgb)<=MEDIA_G2_MAX_SCD_VA_EVENT_GPX_DISPLAY_BUF_SIZE);
              memcpy(curVirtAddr, gMCFW_gpxTiScdVaTdRgb_186x14_rgb, sizeof(gMCFW_gpxTiScdVaTdRgb_186x14_rgb));
              break;
            case MEDIA_G2_SCD_VA_EVT_IMD:
              OSA_assert(sizeof(gMCFW_gpxTiScdVaImdRgb_186x14_rgb)<=MEDIA_G2_MAX_SCD_VA_EVENT_GPX_DISPLAY_BUF_SIZE);
              memcpy(curVirtAddr, gMCFW_gpxTiScdVaImdRgb_186x14_rgb, sizeof(gMCFW_gpxTiScdVaImdRgb_186x14_rgb));
              break;
            default:
              break;
         }
    }

    Vcap_registerBitsCallback(&callback,
                         (Ptr)&gMedia_G2_SCDCtrl);

    status = OSA_semCreate(&gMedia_G2_SCDCtrl.wrSem, 1, 0);
    OSA_assert(status==OSA_SOK);

    status = OSA_thrCreate(
        &gMedia_G2_SCDCtrl.wrThrHndl,
        Media_G2_bitsWriteMain_SCD,
        OSA_THR_PRI_DEFAULT,
        0,
        &gMedia_G2_SCDCtrl
        );

    OSA_assert(status==OSA_SOK);

    OSA_waitMsecs(100); // allow for print to complete

Thanks for your help !