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DVRRDK question on mosaic grid and scaling

Thomas Lo
Expert 1560 points

I am using DVRRDK 4.0.

I want to add a mode such that when using mosaic, I can keep the width to height ratio of video in each mosaic window,

e.g. Assume output display resolution is 1080p and input video to mosaic is 720x576 (width to height 5:4), When displayed in 2x2 mode, current mosaic configuration would scale video to 960x540, which is 16:9, but I hope the ratio to be 5:4 which is 675x540.

I know I can just tune the size of each window to fit my need, but my question is, in this case, when i enable griddraw, the grid would also become 675x540 instead of 960x540, which look strange.

So what I want to ask is how could I do modification such that I could make the video and grid having different size?

Thanks

  • 0
    TI__Guru 59700 points

    Pls attach a picture showing the issue. The issue description is not clear.

  • 0 in reply to Badri Narayanan
    Expert 1560 points

    For example, when 2x2 display mode

    Figure 1 shows what is normally displayed, 

    and Figure 2 is what I want to do now.

    The black outer line is the display,
    The the red lines are the grid drawn by mosaic
    The blue area is the video

    I want to have the grid drawn on each window not the same as the video size.

    Hope it is clear this time, thanks.

  • 0 in reply to Thomas Lo
    TI__Guru 59700 points

    I understand you want to achieve what is shown n Figure 2 but currently swms will draw the gird immediately next to the window. Is it correct ?

    If yes then this is not supported in swms.

    You will have to modify

    /dvr_rdk/mcfw/src_bios6/links_m3vpss/swMs/swMsLink_drv.c

    SwMsLink_drvDoDma

    Change such that /*Vertical Left side*/ and  /*Vertical right side*/ grid are draw between windows intead of next to window by adjusting startX,startY

  • 0 in reply to Badri Narayanan
    Expert 1560 points

    Thanks, I will try that.