[19/22] libcamera: software_isp: lut: Make CCM available in debayer params
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Message ID 20251120232019.3590-20-bryan.odonoghue@linaro.org
State New
Headers show
Series
  • GPUISP precursor series
Related show

Commit Message

Bryan O'Donoghue Nov. 20, 2025, 11:20 p.m. UTC 
Provide the CCM calculated in LUT to the debayer params structure for
consumption in the debayer shaders.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
---
 include/libcamera/internal/software_isp/debayer_params.h | 7 +++++++
 src/ipa/simple/algorithms/lut.cpp                        | 1 +
 2 files changed, 8 insertions(+)

Patch
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diff --git a/include/libcamera/internal/software_isp/debayer_params.h b/include/libcamera/internal/software_isp/debayer_params.h
index 217cd5d92..019df2048 100644
--- a/include/libcamera/internal/software_isp/debayer_params.h
+++ b/include/libcamera/internal/software_isp/debayer_params.h
@@ -13,6 +13,8 @@ 
 #include <array>
 #include <stdint.h>
 
+#include "libcamera/internal/matrix.h"
+
 namespace libcamera {
 
 struct DebayerParams {
@@ -49,6 +51,11 @@  struct DebayerParams {
 	CcmLookupTable greenCcm;
 	CcmLookupTable blueCcm;
 	LookupTable gammaLut;
+
+	/*
+	 * Per frame CCM values as calcualted by the IPA
+	 */
+	Matrix<float, 3, 3> ccm;	/**< Per frame colour correction matrix for GPUISP */
 };
 
 } /* namespace libcamera */
diff --git a/src/ipa/simple/algorithms/lut.cpp b/src/ipa/simple/algorithms/lut.cpp
index d4a79e101..49482d711 100644
--- a/src/ipa/simple/algorithms/lut.cpp
+++ b/src/ipa/simple/algorithms/lut.cpp
@@ -133,6 +133,7 @@  void Lut::prepare(IPAContext &context,
 		auto &red = params->redCcm;
 		auto &green = params->greenCcm;
 		auto &blue = params->blueCcm;
+		params->ccm = ccm;
 		for (unsigned int i = 0; i < DebayerParams::kRGBLookupSize; i++) {
 			red[i].r = ccmValue(i, ccm[0][0]);
 			red[i].g = ccmValue(i, ccm[1][0]);