From 78a2d00c79b22445b5ad0f57dda3947d9bcd005b Mon Sep 17 00:00:00 2001 From: David Plowman Date: Wed, 18 Oct 2023 11:29:59 +0100 Subject: ipa: rpi: agc: Fetch AWB status in the prepare method AWB writes this out during prepare, so we may as well read it in AGC prepare as well. Reading it in process is wrong on the PiSP platform because process runs before prepare, so the AWB status won't be there (on vc4 it made no difference). Signed-off-by: David Plowman Signed-off-by: Naushir Patuck Reviewed-by: Naushir Patuck Signed-off-by: Kieran Bingham --- src/ipa/rpi/controller/rpi/agc_channel.cpp | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) diff --git a/src/ipa/rpi/controller/rpi/agc_channel.cpp b/src/ipa/rpi/controller/rpi/agc_channel.cpp index 3efb6482..8d374b53 100644 --- a/src/ipa/rpi/controller/rpi/agc_channel.cpp +++ b/src/ipa/rpi/controller/rpi/agc_channel.cpp @@ -270,7 +270,11 @@ AgcChannel::AgcChannel() lastTargetExposure_(0s), ev_(1.0), flickerPeriod_(0s), maxShutter_(0s), fixedShutter_(0s), fixedAnalogueGain_(0.0) { - memset(&awb_, 0, sizeof(awb_)); + /* Set AWB default values in case early frames have no updates in metadata. */ + awb_.gainR = 1.0; + awb_.gainG = 1.0; + awb_.gainB = 1.0; + /* * Setting status_.totalExposureValue_ to zero initially tells us * it's not been calculated yet (i.e. Process hasn't yet run). @@ -409,7 +413,6 @@ void AgcChannel::switchMode(CameraMode const &cameraMode, Duration fixedShutter = limitShutter(fixedShutter_); if (fixedShutter && fixedAnalogueGain_) { /* We're going to reset the algorithm here with these fixed values. */ - fetchAwbStatus(metadata); double minColourGain = std::min({ awb_.gainR, awb_.gainG, awb_.gainB, 1.0 }); ASSERT(minColourGain != 0.0); @@ -464,6 +467,9 @@ void AgcChannel::prepare(Metadata *imageMetadata) AgcStatus delayedStatus; AgcPrepareStatus prepareStatus; + /* Fetch the AWB status now because AWB also sets it in the prepare method. */ + fetchAwbStatus(imageMetadata); + if (!imageMetadata->get("agc.delayed_status", delayedStatus)) totalExposureValue = delayedStatus.totalExposureValue; @@ -507,8 +513,6 @@ void AgcChannel::process(StatisticsPtr &stats, DeviceStatus const &deviceStatus, * configuration, that kind of thing. */ housekeepConfig(); - /* Fetch the AWB status immediately, so that we can assume it's there. */ - fetchAwbStatus(imageMetadata); /* Get the current exposure values for the frame that's just arrived. */ fetchCurrentExposure(deviceStatus); /* Compute the total gain we require relative to the current exposure. */ @@ -637,9 +641,6 @@ void AgcChannel::fetchCurrentExposure(DeviceStatus const &deviceStatus) void AgcChannel::fetchAwbStatus(Metadata *imageMetadata) { - awb_.gainR = 1.0; /* in case not found in metadata */ - awb_.gainG = 1.0; - awb_.gainB = 1.0; if (imageMetadata->get("awb.status", awb_) != 0) LOG(RPiAgc, Debug) << "No AWB status found"; } -- cgit v1.2.1