Re: [RFC PATCH 2/3] media: qcom: camss: Add CAMSS Offline Processing Engine driver

[Bryan O'Donoghue]

On 05/04/2026 21:24, Laurent Pinchart wrote:
> > We make the buffer in user-space which could be used by CDM but stage
> > the implementation.
> My proposal is to use an abstraction for the ISP parameters buffer, with
> logical parameters, and translate that to the CDM buffer in kernelspace,
> but in userspace context instead of IRQ handler context.

As I understand it, the parameters buffers can top out at nearly 2.5 
megabytes.

However I haven't looked into the CDM format in detail so - it needs 
anaylsis.

TBH I'm happy enough to follow a precedent, let's discuss further with 
an analysis of CDM in hand.

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bod