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authorNaushir Patuck <naush@raspberrypi.com>2023-10-13 08:48:30 +0100
committerKieran Bingham <kieran.bingham@ideasonboard.com>2023-10-18 11:01:22 +0100
commit0be32012ef378ad22b2715a2bddee0acfce33f92 (patch)
tree83a7d5789b751f44659630a7cdeb84a0d03820e7 /src
parent56ca5091debff3a74a9ff146ee6a15eda47047bc (diff)
ipa: rpi: Prepare ALSC for PiSP support
Prepare the ALSC algorithm to support the PiSP hardware. The key change is to avoid factoring out the WB correction in the AWB zone statistics. Add the ALSC correction to the global metadata so that AWB can use it to factor the gains back in for the AWB calculations. Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: David Plowman <david.plowman@raspberrypi.com> Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Diffstat (limited to 'src')
-rw-r--r--src/ipa/rpi/controller/rpi/alsc.cpp16
1 files changed, 12 insertions, 4 deletions
diff --git a/src/ipa/rpi/controller/rpi/alsc.cpp b/src/ipa/rpi/controller/rpi/alsc.cpp
index 3a2e8fe0..f1ccef87 100644
--- a/src/ipa/rpi/controller/rpi/alsc.cpp
+++ b/src/ipa/rpi/controller/rpi/alsc.cpp
@@ -348,9 +348,11 @@ static void copyStats(RgbyRegions &regions, StatisticsPtr &stats,
const std::vector<double> &bTable = status.b;
for (unsigned int i = 0; i < stats->awbRegions.numRegions(); i++) {
auto r = stats->awbRegions.get(i);
- r.val.rSum = static_cast<uint64_t>(r.val.rSum / rTable[i]);
- r.val.gSum = static_cast<uint64_t>(r.val.gSum / gTable[i]);
- r.val.bSum = static_cast<uint64_t>(r.val.bSum / bTable[i]);
+ if (stats->colourStatsPos == Statistics::ColourStatsPos::PostLsc) {
+ r.val.rSum = static_cast<uint64_t>(r.val.rSum / rTable[i]);
+ r.val.gSum = static_cast<uint64_t>(r.val.gSum / gTable[i]);
+ r.val.bSum = static_cast<uint64_t>(r.val.bSum / bTable[i]);
+ }
regions.set(i, r);
}
}
@@ -368,7 +370,8 @@ void Alsc::restartAsync(StatisticsPtr &stats, Metadata *imageMetadata)
* the LSC table that the pipeline applied to them.
*/
AlscStatus alscStatus;
- if (imageMetadata->get("alsc.status", alscStatus) != 0) {
+ if (stats->colourStatsPos == Statistics::ColourStatsPos::PostLsc &&
+ imageMetadata->get("alsc.status", alscStatus) != 0) {
LOG(RPiAlsc, Warning)
<< "No ALSC status found for applied gains!";
alscStatus.r.resize(config_.tableSize.width * config_.tableSize.height, 1.0);
@@ -414,6 +417,11 @@ void Alsc::prepare(Metadata *imageMetadata)
status.g = prevSyncResults_[1].data();
status.b = prevSyncResults_[2].data();
imageMetadata->set("alsc.status", status);
+ /*
+ * Put the results in the global metadata as well. This will be used by
+ * AWB to factor in the colour shading correction.
+ */
+ getGlobalMetadata().set("alsc.status", status);
}
void Alsc::process(StatisticsPtr &stats, Metadata *imageMetadata)