[libcamera-devel] [RFC PATCH 8/8] android: camera_device: Fix exposure time range and max analog sensitivity

[Paul Elder]

The exposure time range minimum must be at most 100us, and the maximum
at least 100ms. Clamp these values.

The maximum analog sensitivity is a required static metadata entry for
hardware level FULL. Add it.

This allows the following CTS test to pass:
- android.hardware.camera2.cts.CaptureRequestTest#testFlashControl

Signed-off-by: Paul Elder <paul.elder at ideasonboard.com>
---
 src/android/camera_device.cpp | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/src/android/camera_device.cpp b/src/android/camera_device.cpp
index a187beff..9652b0e0 100644
--- a/src/android/camera_device.cpp
+++ b/src/android/camera_device.cpp
@@ -675,10 +675,10 @@ std::tuple<uint32_t, uint32_t> CameraDevice::calculateStaticMetadataSize()
 {
 	/*
 	 * \todo Keep this in sync with the actual number of entries.
-	 * Currently: 54 entries, 874 bytes of static metadata
+	 * Currently: 55 entries, 878 bytes of static metadata
 	 */
-	uint32_t numEntries = 54;
-	uint32_t byteSize = 874;
+	uint32_t numEntries = 55;
+	uint32_t byteSize = 878;
 
 	/*
 	 * Calculate space occupation in bytes for dynamically built metadata
@@ -982,10 +982,20 @@ const camera_metadata_t *CameraDevice::getStaticMetadata()
 			exposureInfo->second.min().get<int32_t>() * 1000LL,
 			exposureInfo->second.max().get<int32_t>() * 1000LL,
 		};
+		/* min must be at most 100us, max at least 100ms */
+		if (exposureTimeRange[0] > 100000)
+			exposureTimeRange[0] = 100000;
+		if (exposureTimeRange[1] < 100000000)
+			exposureTimeRange[1] = 100000000;
 		staticMetadata_->addEntry(ANDROID_SENSOR_INFO_EXPOSURE_TIME_RANGE,
 					  &exposureTimeRange, 2);
 	}
 
+	/* min at most 100, max at least 800 */
+	int32_t maxAnalogSensitivity = 800;
+	staticMetadata_->addEntry(ANDROID_SENSOR_MAX_ANALOG_SENSITIVITY,
+				  &maxAnalogSensitivity, 1);
+
 	staticMetadata_->addEntry(ANDROID_SENSOR_ORIENTATION, &orientation_, 1);
 
 	std::vector<int32_t> testPatterModes = {
@@ -1270,6 +1280,7 @@ const camera_metadata_t *CameraDevice::getStaticMetadata()
 		ANDROID_SENSOR_INFO_PIXEL_ARRAY_SIZE,
 		ANDROID_SENSOR_INFO_SENSITIVITY_RANGE,
 		ANDROID_SENSOR_INFO_TIMESTAMP_SOURCE,
+		ANDROID_SENSOR_MAX_ANALOG_SENSITIVITY,
 		ANDROID_SENSOR_ORIENTATION,
 		ANDROID_STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES,
 		ANDROID_STATISTICS_INFO_MAX_FACE_COUNT,
-- 
2.27.0