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change in AlgLink_OsdalgProcessFrame()

longhu chen
Intellectual 560 points

hi ,

i want to change the the pixel value in OSD demo , i make a change in AlgLink_OsdalgProcessFrame() function with red color as follow

 

    for(winId=0; winId<pChObj->numWindows; winId++)
    {
        if(!pChObj->osdWinObj[winId].enableWin)
            continue;
        Vps_printf("$$$$$$$$$$$$$$$$$$$$$  enableWin  $$$$$$$$$$$$$$$$$$$$$\n");
        /* YUV422i or YUV420SP - Y-plane processing */

        int i=0,j=0;
        UInt8 *pBufferStart = pFrame->addr[0][0];

        UInt8 *pBuffer;

         for (i= 0; i < pFrameInfo->rtChInfo.height;i++)

        {

         pBuffer =pBufferStart + (i * pFrameInfo->rtChInfo.width);    

                 for (j = 0; j< pFrameInfo->rtChInfo.width/2; j++)  

                         {     

                          *(pBuffer + 0)=0;     

                          *(pBuffer + 1)=0;     

                          *(pBuffer + 2)=0;     

                          *(pBuffer + 3)=0;     

                           pBuffer  += 4;  

                        }

        }
         pSwOsdObj->videoWindowAddr = pFrame->addr[0][0];

................

}

but there is no change in display ? what should i do ?

  • 0
    TI__Expert 6950 points

    pFrameInfo->rtChInfo.height, widht might not be valid for all frames. Try to print these values for every frame and see.

    Store width & height when it becomes valid only when pFrameInfo->rtChInfoUpdate = TRUE and use it later. Existing code uses this flag already.

  • 0
    Guru 10655 points

    hi

    Is the display from the output of osd? if yes, how did you make sure?

  • 0 in reply to Sivagamy Govindasamy
    Intellectual 560 points

    hi ,thanks

    i have printed the message

     [c6xdsp ] $$$$$$$$ pFrameInfo->rtChInfoUpdate is enable $$$$$$$$$
     [c6xdsp ] &&&&&&&&&&&&&&&& pFrameInfo->rtChInfo.height=1080 &&&&&&&&&&&&&
     [c6xdsp ] &&&&&&&&&&&&&&&& pFrameInfo->rtChInfo.width=1920 &&&&&&&&&&&&&

     [c6xdsp ] &&&&&&&&&&&&&&&& pFrame->addr[0][0]=b0c75c80 &&&&&&&&&&&&&
     [c6xdsp ] &&&&&&&&&&&&&&&& pFrame->addr[0][0]=b106a480 &&&&&&&&&&&&&
     [c6xdsp ] &&&&&&&&&&&&&&&& pFrame->addr[0][0]=b145ec80 &&&&&&&&&&&&&
     [c6xdsp ] &&&&&&&&&&&&&&&& pFrame->addr[0][0]=b1853480 &&&&&&&&&&&&&
     [c6xdsp ] &&&&&&&&&&&&&&&& pFrame->addr[0][0]=b1c47c80 &&&&&&&&&&&&&
     [c6xdsp ] &&&&&&&&&&&&&&&& pFrame->addr[0][0]=b203c480 &&&&&&&&&&&&&
     [c6xdsp ] &&&&&&&&&&&&&&&& pFrame->addr[0][0]=b2430c80 &&&&&&&&&&&&&
     [c6xdsp ] &&&&&&&&&&&&&&&& pFrame->addr[0][0]=b2825480 &&&&&&&&&&&&&
     [c6xdsp ] &&&&&&&&&&&&&&&& pFrame->addr[0][0]=b2c19c80 &&&&&&&&&&&&&
     [c6xdsp ] &&&&&&&&&&&&&&&& pFrame->addr[0][0]=b3402c80 &&&&&&&&&&&&&

    is there any question ??

  • 0 in reply to 1330hayacool7102
    Intellectual 560 points

    i use link_api ,and the link is :

                   capture--->ipcframesoutvpss------(processlink)---->ipcframesinDsp----->osd

                                       ipcframesoutvpss------(nextlink)---------->display

     

    so the display comes from OSD

  • 0 in reply to longhu chen
    TI__Expert 6950 points

    AlgLink_OsdalgProcessFrame() gets called for every frame. You need to check if pFrameInfo->rtChInfo.height=1080 & pFrameInfo->rtChInfo.width=1920 is valid for every frame.


    From the prints, it looks like pFrameInfo->rtChInfo.height / width has correct value for only first frame. After that, they remain 0 and your processing loop is not entered for successive frames.

    Can you store the width & height in some global variable when rtChInfoUpdate is TRUE and use the global varilable in your processing for loop.

     

  • 0 in reply to Sivagamy Govindasamy
    TI__Guru 59700 points

    Which RDK release are you using ? The issue of rtChannelInfo update was fixed a long time ago.

    Pls print buffer address content of first byte in dspAlgLink and also in display link and confirm the address you are seeing in display link is the same as the address you are seeing in dspAlgLink.

     

    Are you seeing the display frozen or do you actually see the screen getting updated with captured frames ?