From 692d0d66ac83ce24eaf8249687e47ef861f73b90 Mon Sep 17 00:00:00 2001 From: Naushir Patuck Date: Tue, 8 Oct 2024 09:13:16 +0100 Subject: ipa: rpi: awb: Add a const for the default colour temperature A default CT of 4500K is used in a couple of places. Add a constexpr value for the default CT value and use it instead. Signed-off-by: Naushir Patuck Reviewed-by: David Plowman Reviewed-by: Laurent Pinchart Signed-off-by: Kieran Bingham --- src/ipa/rpi/controller/rpi/awb.cpp | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'src') diff --git a/src/ipa/rpi/controller/rpi/awb.cpp b/src/ipa/rpi/controller/rpi/awb.cpp index e5d51092..65416d05 100644 --- a/src/ipa/rpi/controller/rpi/awb.cpp +++ b/src/ipa/rpi/controller/rpi/awb.cpp @@ -21,6 +21,8 @@ using namespace libcamera; LOG_DEFINE_CATEGORY(RPiAwb) +constexpr double kDefaultCT = 4500.0; + #define NAME "rpi.awb" /* @@ -215,7 +217,7 @@ void Awb::initialise() syncResults_.gainB = 1.0 / config_.ctB.eval(syncResults_.temperatureK); } else { /* random values just to stop the world blowing up */ - syncResults_.temperatureK = 4500; + syncResults_.temperatureK = kDefaultCT; syncResults_.gainR = syncResults_.gainG = syncResults_.gainB = 1.0; } prevSyncResults_ = syncResults_; @@ -717,7 +719,11 @@ void Awb::awbGrey() sumR += *ri, sumB += *bi; double gainR = sumR.G / (sumR.R + 1), gainB = sumB.G / (sumB.B + 1); - asyncResults_.temperatureK = 4500; /* don't know what it is */ + /* + * The grey world model can't estimate the colour temperature, use a + * default value. + */ + asyncResults_.temperatureK = kDefaultCT; asyncResults_.gainR = gainR; asyncResults_.gainG = 1.0; asyncResults_.gainB = gainB; -- cgit v1.2.1