Query: Mutiple CAPTURE ports on a single device

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Hi

I have a v4l2 driver for a hardware which is capable of taking one input
and producing two outputs. Eg: Downscaler which takes one input @ 1080p
and two outputs - one @ 720p and other at VGA. My driver is currently
implemented as having two capabilities -

1. V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE
2. V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE

Do you know if I can have two CAPTURE capabilities. In that case how do I
distinguish between QBUF/DQBUF of each capability?

Thanks
Vinay

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