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OMAP3530 Framebuffer/DSS Field Order

Andrew Poole
Intellectual 570 points


Hi,

I am looking at capturing video using the Camera ISP and Video4Linux 2 - I am currently following one of the examples supplied in the PSP. I am noticing that after capturing a frame of PAL video, the fields appear to be swapped when replaying the frame on the output. Looking at the available IOCTLs V4L2 provides, there is a way to set the interlacing method (INTERLACED_TB or INTERLACED_BT) for capture.

As the output is supplied a full frame, the DSS must interlace this to produce the output video. Is there a way to tell the DSS to output fields in a different order?

Thanks,

 

Andy

  • 0
    Intellectual 570 points

    It appears that it is not possible to set the field order of the DSS output video. I am now looking to change the capture side (ISP and CCDC) to support V4L2_FIELD_INTERLACED_TB or V4L2_FIELD_INTERLACED_BT as they don't appear to be supported. Are there any examples of this?

    Any help would be appreciated.

     

    Andy