diff options
| -rw-r--r-- | src/ipa/rpi/controller/rpi/agc_channel.cpp | 7 | ||||
| -rw-r--r-- | src/ipa/rpi/controller/rpi/agc_channel.h | 1 |
2 files changed, 8 insertions, 0 deletions
diff --git a/src/ipa/rpi/controller/rpi/agc_channel.cpp b/src/ipa/rpi/controller/rpi/agc_channel.cpp index 3957dbc3..1e7eae06 100644 --- a/src/ipa/rpi/controller/rpi/agc_channel.cpp +++ b/src/ipa/rpi/controller/rpi/agc_channel.cpp @@ -251,6 +251,8 @@ int AgcConfig::read(const libcamera::YamlObject ¶ms) defaultExposureTime = params["default_exposure_time"].get<double>(1000) * 1us; defaultAnalogueGain = params["default_analogue_gain"].get<double>(1.0); + stableRegion = params["stable_region"].get<double>(0.02); + return 0; } @@ -871,6 +873,8 @@ bool AgcChannel::applyDigitalGain(double gain, double targetY, bool channelBound void AgcChannel::filterExposure() { double speed = config_.speed; + double stableRegion = config_.stableRegion; + /* * AGC adapts instantly if both shutter and gain are directly specified * or we're in the startup phase. @@ -880,6 +884,9 @@ void AgcChannel::filterExposure() speed = 1.0; if (!filtered_.totalExposure) { filtered_.totalExposure = target_.totalExposure; + } else if (filtered_.totalExposure * (1.0 - stableRegion) < target_.totalExposure && + filtered_.totalExposure * (1.0 + stableRegion) > target_.totalExposure) { + /* Total exposure must change by more than this or we leave it alone. */ } else { /* * If close to the result go faster, to save making so many diff --git a/src/ipa/rpi/controller/rpi/agc_channel.h b/src/ipa/rpi/controller/rpi/agc_channel.h index ae826fa8..c1808422 100644 --- a/src/ipa/rpi/controller/rpi/agc_channel.h +++ b/src/ipa/rpi/controller/rpi/agc_channel.h @@ -75,6 +75,7 @@ struct AgcConfig { double baseEv; libcamera::utils::Duration defaultExposureTime; double defaultAnalogueGain; + double stableRegion; }; class AgcChannel |