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libcamera: matrix: Add read-only accessor to internal data

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Add a data() function to the Matrix class to access the internal data.
This is useful for code that needs to use the matrix contents as a
linear array, as shown by the RkISP1::Ccm::process() function that needs
to copy the matrix data to a local variable. Simplify that function by
using the new accessor.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Milan Zamazal <mzamazal@redhat.com>
This commit is contained in:
Laurent Pinchart 2025-01-27 01:44:38 +02:00
parent 7fdfe648a4
commit 7e5d811842
3 changed files with 14 additions and 6 deletions
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7
src/ipa/rkisp1/algorithms/ccm.cpp
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@ -120,12 +120,7 @@ void Ccm::process([[maybe_unused]] IPAContext &context,
[[maybe_unused]] const rkisp1_stat_buffer *stats,
ControlList &metadata)
{
float m[9];
for (unsigned int i = 0; i < 3; i++) {
for (unsigned int j = 0; j < 3; j++)
m[i * 3 + j] = frameContext.ccm.ccm[i][j];
}
metadata.set(controls::ColourCorrectionMatrix, m);
metadata.set(controls::ColourCorrectionMatrix, frameContext.ccm.ccm.data());
}
REGISTER_IPA_ALGORITHM(Ccm, "Ccm")