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libcamera: software_isp: Track whether CCM is enabled

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Applying color correction matrix (CCM) in software ISP is optional due
to performance reasons.  CCM is applied if and only if `Ccm' algorithm
is present in the tuning file.

Software ISP debayering is a performance critical piece of code and we
do not want to use dynamic conditionals there.  Therefore we pass
information about CCM application to debayering configuration and let it
select the right versions of debayering functions using templates.  This
is a trick similar to the previously used one for adding or not adding
an alpha channel to the output.

Debayering gets this information but it ignores it in this patch.
Actual processing with CCM is added in the followup patch.

Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
This commit is contained in:
Milan Zamazal 2025-03-26 10:08:46 +01:00 • committed by Kieran Bingham
parent 0c53fe5f2f
commit ac30686556
10 changed files with 60 additions and 36 deletions
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1
include/libcamera/internal/software_isp/software_isp.h
View file

@ -99,6 +99,7 @@ private:
SharedMemObject<DebayerParams> sharedParams_;
DebayerParams debayerParams_;
DmaBufAllocator dmaHeap_;
bool ccmEnabled_;
std::unique_ptr<ipa::soft::IPAProxySoft> ipa_;
std::deque<FrameBuffer *> queuedInputBuffers_;

2
include/libcamera/ipa/soft.mojom
View file

@ -17,7 +17,7 @@ interface IPASoftInterface {
libcamera.SharedFD fdStats,
libcamera.SharedFD fdParams,
libcamera.ControlInfoMap sensorCtrlInfoMap)
=> (int32 ret, libcamera.ControlInfoMap ipaControls);
=> (int32 ret, libcamera.ControlInfoMap ipaControls, bool ccmEnabled);
start() => (int32 ret);
stop();
configure(IPAConfigInfo configInfo)