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DM365 Drivers: Confusion between "chained" and "single shot/continuous"

Bryan Evenson
Intellectual 635 points
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I'm setting up some additional modes for my video capture, and I'm getting a little confused about some of the terminology as it applies to my situation.  I am utilizing a 5 MP camera, and I currently have the DM365 setup for continuous mode to capture the 5 MP raw Bayer video and resize it down to 720x480.  I am using DVSDK 3.10.00.19.  I would like to create the follow two additional modes:

 

Mode 1

Video In:  2456x2058 raw Bayer 12-bit

RSZA Out:  2456x2058 YCbCr 4:2:2

RSZB Out:  Disabled

 

Mode 2

Video In:  2456x2058 raw Bayer 12-bit

RSZA Out:  2456x2058 YCbCr 4:2:2

RSZB Out:  720x480 YCbCr 4:2:2

 

For these two modes, since at least one output image is wider than 2176 pixels I will need to send the output of the ISIF (CCDC) to RAM.  From my understanding this means I need to configure the IPIPE (Previewer) in single shot mode.  What about the Resizer; does the Resizer need to be in single shot mode or would it be in continuous mode?  For the Previewer and Resizer drivers I see references to “chained” operation, where does the chained operation fit into all of this? 

  • 0
    TI__Mastermind 19985 points

    Hi Bryan,

    Bryan Evenson said:
    What about the Resizer; does the Resizer need to be in single shot mode or would it be in continuous mode? 

    Yes, you would have to run resizer also in single shot mode

    Bryan Evenson said:
    For the Previewer and Resizer drivers I see references to “chained” operation, where does the chained operation fit into all of this?

    The chained mode is used to chain the previewer and resizer in the complete capture driver. In this case, you have to configure non-chained mode as you are not using continuous mode of the drivers.

    Regards,

    Anshuman

    PS: Please mark this post as verified, if you think it has answered your question. Thanks.