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-rw-r--r--src/ipa/rkisp1/algorithms/blc.cpp54
1 files changed, 46 insertions, 8 deletions
diff --git a/src/ipa/rkisp1/algorithms/blc.cpp b/src/ipa/rkisp1/algorithms/blc.cpp
index d2e74354..b17b549c 100644
--- a/src/ipa/rkisp1/algorithms/blc.cpp
+++ b/src/ipa/rkisp1/algorithms/blc.cpp
@@ -46,10 +46,47 @@ BlackLevelCorrection::BlackLevelCorrection()
int BlackLevelCorrection::init([[maybe_unused]] IPAContext &context,
const YamlObject &tuningData)
{
- blackLevelRed_ = tuningData["R"].get<int16_t>(256);
- blackLevelGreenR_ = tuningData["Gr"].get<int16_t>(256);
- blackLevelGreenB_ = tuningData["Gb"].get<int16_t>(256);
- blackLevelBlue_ = tuningData["B"].get<int16_t>(256);
+ std::optional<int16_t> levelRed = tuningData["R"].get<int16_t>();
+ std::optional<int16_t> levelGreenR = tuningData["Gr"].get<int16_t>();
+ std::optional<int16_t> levelGreenB = tuningData["Gb"].get<int16_t>();
+ std::optional<int16_t> levelBlue = tuningData["B"].get<int16_t>();
+ bool tuningHasLevels = levelRed && levelGreenR && levelGreenB && levelBlue;
+
+ auto blackLevel = context.camHelper->blackLevel();
+ if (!blackLevel) {
+ /*
+ * Not all camera sensor helpers have been updated with black
+ * levels. Print a warning and fall back to the levels from the
+ * tuning data to preserve backward compatibility. This should
+ * be removed once all helpers provide the data.
+ */
+ LOG(RkISP1Blc, Warning)
+ << "No black levels provided by camera sensor helper"
+ << ", please fix";
+
+ blackLevelRed_ = levelRed.value_or(4096);
+ blackLevelGreenR_ = levelGreenR.value_or(4096);
+ blackLevelGreenB_ = levelGreenB.value_or(4096);
+ blackLevelBlue_ = levelBlue.value_or(4096);
+ } else if (tuningHasLevels) {
+ /*
+ * If black levels are provided in the tuning file, use them to
+ * avoid breaking existing camera tuning. This is deprecated and
+ * will be removed.
+ */
+ LOG(RkISP1Blc, Warning)
+ << "Deprecated: black levels overwritten by tuning file";
+
+ blackLevelRed_ = *levelRed;
+ blackLevelGreenR_ = *levelGreenR;
+ blackLevelGreenB_ = *levelGreenB;
+ blackLevelBlue_ = *levelBlue;
+ } else {
+ blackLevelRed_ = *blackLevel;
+ blackLevelGreenR_ = *blackLevel;
+ blackLevelGreenB_ = *blackLevel;
+ blackLevelBlue_ = *blackLevel;
+ }
tuningParameters_ = true;
@@ -77,10 +114,11 @@ void BlackLevelCorrection::prepare([[maybe_unused]] IPAContext &context,
return;
params->others.bls_config.enable_auto = 0;
- params->others.bls_config.fixed_val.r = blackLevelRed_;
- params->others.bls_config.fixed_val.gr = blackLevelGreenR_;
- params->others.bls_config.fixed_val.gb = blackLevelGreenB_;
- params->others.bls_config.fixed_val.b = blackLevelBlue_;
+ /* The rkisp1 uses 12bit based black levels. Scale down accordingly. */
+ params->others.bls_config.fixed_val.r = blackLevelRed_ >> 4;
+ params->others.bls_config.fixed_val.gr = blackLevelGreenR_ >> 4;
+ params->others.bls_config.fixed_val.gb = blackLevelGreenB_ >> 4;
+ params->others.bls_config.fixed_val.b = blackLevelBlue_ >> 4;
params->module_en_update |= RKISP1_CIF_ISP_MODULE_BLS;
params->module_ens |= RKISP1_CIF_ISP_MODULE_BLS;