[3/3] ipa: simple: Add OV08X40 tuning
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Message ID 20260816204259.2845517-4-opensource@inspiredexperts.com
State New
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Series
  • ipa: simple: Add sensor-specific image and exposure tuning
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Commit Message

James Alexander Aug. 16, 2026, 8:42 p.m. UTC 
Add the ov08x40 tuning used on the HP Spectre test system and install it
with the other simple IPA data.

The matrix and image controls reduce a green-yellow cast and keep webcam
exposure and gain within practical limits on that machine. The tuning was
tested under warm indoor lighting but is not lab calibrated.

Build-tested against libcamera base b8910c9a4961 and hardware-tested as part of
the complete patch set on the target HP Spectre.

Signed-off-by: James Alexander <opensource@inspiredexperts.com>
---

Patch
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diff --git a/src/ipa/simple/data/meson.build b/src/ipa/simple/data/meson.build
index 92795ee..d994100 100644
--- a/src/ipa/simple/data/meson.build
+++ b/src/ipa/simple/data/meson.build
@@ -1,6 +1,7 @@ 
 # SPDX-License-Identifier: CC0-1.0
 
 conf_files = files([
+    'ov08x40.yaml',
     'uncalibrated.yaml',
 ])
 
diff --git a/src/ipa/simple/data/ov08x40.yaml b/src/ipa/simple/data/ov08x40.yaml
new file mode 100644
index 0000000..aa1b8e0
--- /dev/null
+++ b/src/ipa/simple/data/ov08x40.yaml
@@ -0,0 +1,22 @@ 
+# SPDX-License-Identifier: CC0-1.0
+%YAML 1.1
+---
+version: 1
+algorithms:
+  - BlackLevel:
+  - Awb:
+  - Ccm:
+      ccms:
+        - ct: 3050
+          ccm: [ 1.12, -0.08, -0.04,
+                -0.05,  1.00,  0.05,
+                -0.02, -0.10,  1.12 ]
+          offsets: [ 0, 0, 0 ]
+  - Adjust:
+      contrast: 1.15
+      gamma: 2.2
+  - Agc:
+      target: 2.3
+      maxAnalogueGain: 3.0
+      maxExposureTimeMs: 33.0
+...