dec thread Unhandled Exception

You have to initialize the maximum number of channels you will be using in your application at ipcBitsOutLinkHLOS and decLink create time. You cannot create decLink for 1 channels (channel 0) and then dynamically open channel 1.

You can configure the decoder to not create algotirhm and output buffers if you don't want to create all channels by setting decPrm.DecLink_ChCreateParams[chId].algCreateStatus = DEC_LINK_ALG_CREATE_STATUS_DONOT_CREATE

Then you can dynamically create channel using Vdec_createChn.

hi badri .thank you for your answer .

you mean that we have 2 ways to fix the problem.

firstly ,we need to init the maximum number of channel ,then delete the channel that we don't need,then we can use the create interface to create a dec channel dynamicly

sencondly,we can configure the decoder at the func DecLink_CreateParams_Init().    set the
pPrm->chCreateParams[i].algCreateStatus  is DEC_LINK_ALG_CREATE_STATUS_DONOT_CREATE

static inline void DecLink_CreateParams_Init(DecLink_CreateParams *pPrm)
{
    UInt32 i;

    memset(pPrm, 0, sizeof(*pPrm));

    pPrm->inQueParams.prevLinkId = SYSTEM_LINK_ID_INVALID;
    pPrm->outQueParams.nextLink = SYSTEM_LINK_ID_INVALID;

    /* when set 0, decoder will take default value based on system
       defined default on BIOS side */
    for (i=0; i<DEC_LINK_MAX_CH;i++)
    {
        pPrm->chCreateParams[i].dpbBufSizeInFrames =
                                DEC_LINK_DPB_SIZE_IN_FRAMES_DEFAULT;
        pPrm->chCreateParams[i].numBufPerCh = 0;
        pPrm->chCreateParams[i].displayDelay = 0;
        pPrm->chCreateParams[i].algCreateStatus =
                                DEC_LINK_ALG_CREATE_STATUS_CREATE;
        pPrm->chCreateParams[i].tilerEnable = FALSE;
        pPrm->chCreateParams[i].decodeFrameType = VDEC_DECODE_ALL;
        pPrm->chCreateParams[i].enableFrameSkipDue2AccumuInNextLink = FALSE;
        pPrm->chCreateParams[i].processCallLevel= VDEC_FRAMELEVELPROCESSCALL;
        pPrm->chCreateParams[i].fieldMergeDecodeEnable = FALSE;
    }
}

thank you for your help.

i will try again

as you told ,i modify the Multich_vdec_vdis.c file

the function MultiCh_createVdecVdis() like following:but still can not create dec channel successfully

for (i=0; i<ipcBitsOutHostPrm.inQueInfo.numCh; i++)
    {
        /*if(gVdecModuleContext.vdecConfig.decChannelParams[i].isCodec == VDEC_CHN_H264)
            decPrm.chCreateParams[i].format                 = IVIDEO_H264HP;
        else if(gVdecModuleContext.vdecConfig.decChannelParams[i].isCodec == VDEC_CHN_MPEG4)
            decPrm.chCreateParams[i].format                 = IVIDEO_MPEG4ASP;
        else if(gVdecModuleContext.vdecConfig.decChannelParams[i].isCodec == VDEC_CHN_MJPEG)
            decPrm.chCreateParams[i].format                 = IVIDEO_MJPEG;*/

         decPrm.chCreateParams[i].format                 = DEC_LINK_ALG_CREATE_STATUS_DONOT_CREATE; 

     ..........
     }

and i set the VDEC_CHN_CREATE_PARAMS_S parameters like following:

                   VDEC_CHN_CREATE_PARAMS_S vdecCrePrm;
                    vdecCrePrm.chNum = 1;
                    vdecCrePrm.decFormat = VDEC_CHN_H264;
                    vdecCrePrm.targetMaxWidth = 1920;
                    vdecCrePrm.targetMaxHeight = 1080;
                    //decode参数结构体中无此参数，暂时设置的为1080P的BitRate
                    vdecCrePrm.targetBitRate = 4 * 1000 * 1000;
                    vdecCrePrm.targetFrameRate = 30;
                    vdecCrePrm.scanFormat = 1;
                    //displayDelay valid only for H264, stream specific value
                    vdecCrePrm.displayDelay = 2;
                    vdecCrePrm.numBufPerCh = 6;
                    vdecCrePrm.decodeFrameType = 0;
                    vdecCrePrm.processCallLevel= VDEC_FRAMELEVELPROCESSCALL;
                    vdecCrePrm.fieldMergeDecodeEnable = FALSE;
                    vdecCrePrm.tilerEnable = 0;
                    vdecCrePrm.chMaxReqBufSize = (vdecCrePrm.targetMaxWidth * vdecCrePrm.targetMaxHeight);
                    
                    //Decode_StreamResolution res = STREAM_HD;///1
                    vdecCrePrm.totalBitStreamBufferSize =   (vdecCrePrm.chMaxReqBufSize*5);//Demo_decodeGetBitBufLimit(res)

                    Vdec_createChn(&vdecCrePrm);:

Share your usecase file and console logs from kernel boot to when error occurs