[libcamera-devel] [PATCH 3/3] android: capabilities: Add static black levels

[Paul Elder]

Plumb SENSOR_BLACK_LEVEL_PATTERN into the static metadata. Get the
information from the sensor database.

Note that nothing is added to the capability detector, as black level
pattern will always be added to the static metadata. Add a comment to
document it.

Bug: https://bugs.libcamera.org/show_bug.cgi?id=48
Signed-off-by: Paul Elder <paul.elder at ideasonboard.com>
---
 src/android/camera_capabilities.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/android/camera_capabilities.cpp b/src/android/camera_capabilities.cpp
index bc62a928..c716f4bf 100644
--- a/src/android/camera_capabilities.cpp
+++ b/src/android/camera_capabilities.cpp
@@ -1342,6 +1342,16 @@ int CameraCapabilities::initializeStaticMetadata()
 				  whiteLevel);
 	availableCharacteristicsKeys_.insert(ANDROID_SENSOR_INFO_WHITE_LEVEL);
 
+	/* This is required for FULL. */
+	std::vector<int32_t> blackLevels = { 0, 0, 0, 0 };
+	if (properties.contains(properties::SensorFixedBlackLevels)) {
+		const Span<const int32_t> &vals =
+			properties.get(properties::SensorFixedBlackLevels);
+		blackLevels = std::vector<int32_t>(vals.begin(), vals.end());
+	}
+	staticMetadata_->addEntry(ANDROID_SENSOR_BLACK_LEVEL_PATTERN, blackLevels);
+	availableCharacteristicsKeys_.insert(ANDROID_SENSOR_BLACK_LEVEL_PATTERN);
+
 	/* Statistics static metadata. */
 	uint8_t faceDetectMode = ANDROID_STATISTICS_FACE_DETECT_MODE_OFF;
 	staticMetadata_->addEntry(ANDROID_STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES,
-- 
2.27.0