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Fri, 8 May 2026 13:17:22 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface MIME-Version: 1.0 From: Javier Tia To: libcamera-devel@lists.libcamera.org Date: Fri, 08 May 2026 10:51:51 -0600 Subject: [PATCH v2 2/3] ipa: simple: data: Add OV2740 tuning file Cc: mzamazal@redhat.com, kieran.bingham@ideasonboard.com, laurent.pinchart@ideasonboard.com, barnabas.pocze@ideasonboard.com, johannes.goede@oss.qualcomm.com, robert.mader@collabora.com In-Reply-To: <177826063718.39714.13674874482653763631@jetm.me> References: <177826063718.39714.13674874482653763631@jetm.me> Message-Id: <20260508171722.53AD71EA0070@mailuser.phl.internal> X-BeenThere: libcamera-devel@lists.libcamera.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: libcamera-devel-bounces@lists.libcamera.org Sender: "libcamera-devel" Add a tuning file for the OV2740 sensor calibrated from the Intel IPU6 AIQB binary (OV2740_CJFLE23_ADL.aiqb) shipped with the Lenovo ThinkPad X1 Carbon Gen 10 (Alder Lake, JP2 module, Chicony CJFLE23 camera). Black level is 0x40 at 10-bit (64 ADU), stored as the 16-bit value 4096 per the BlackLevel algorithm convention (value >> 8 = 16 at 8-bit scale). AWB gain limits are derived from the minimum R/G and B/G chromaticities across the 8 calibrated illuminants (2319 K to 6302 K), with a 10% headroom margin: maxGainR=2.49, maxGainB=3.07. Eight CCMs are extracted from the AIQB advanced color matrix records (record id=25, float format), covering illuminants from 2319 K (incandescent) to 6302 K (daylight). Signed-off-by: Javier Tia --- src/ipa/simple/data/meson.build | 1 + src/ipa/simple/data/ov2740.yaml | 52 +++++++++++++++++++++++++++++++++ 2 files changed, 53 insertions(+) create mode 100644 src/ipa/simple/data/ov2740.yaml diff --git a/src/ipa/simple/data/meson.build b/src/ipa/simple/data/meson.build index 92795ee4..e3e4de74 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([ + 'ov2740.yaml', 'uncalibrated.yaml', ]) diff --git a/src/ipa/simple/data/ov2740.yaml b/src/ipa/simple/data/ov2740.yaml new file mode 100644 index 00000000..da7e1efe --- /dev/null +++ b/src/ipa/simple/data/ov2740.yaml @@ -0,0 +1,52 @@ +# SPDX-License-Identifier: CC0-1.0 +# Calibrated from OV2740_CJFLE23_ADL.aiqb (Lenovo JP2 module, IPU6 ADL) +%YAML 1.1 +--- +version: 1 +algorithms: + - BlackLevel: + blackLevel: 4096 + - Awb: + maxGainR: 2.49 + maxGainB: 3.07 + speed: 0.25 + - Ccm: + ccms: + - ct: 2319 + ccm: [ 1.5938, -0.1714, -0.4224, + -0.6134, 1.9612, -0.3478, + -0.4710, -1.8500, 3.3210 ] + - ct: 2854 + ccm: [ 1.6119, -0.3132, -0.2987, + -0.4418, 1.8227, -0.3809, + -0.1017, -1.3958, 2.4975 ] + - ct: 2884 + ccm: [ 1.7739, -0.6655, -0.1085, + -0.4113, 1.6619, -0.2506, + -0.0150, -1.1661, 2.1811 ] + - ct: 3239 + ccm: [ 1.8298, -0.6636, -0.1662, + -0.4086, 1.7373, -0.3287, + -0.0500, -1.0836, 2.1335 ] + - ct: 3865 + ccm: [ 1.8836, -0.7430, -0.1406, + -0.3653, 1.7000, -0.3348, + -0.0542, -0.8442, 1.8984 ] + - ct: 4136 + ccm: [ 1.9043, -0.8348, -0.0695, + -0.3241, 1.6389, -0.3148, + 0.0262, -0.9593, 1.9332 ] + - ct: 4939 + ccm: [ 1.6371, -0.4490, -0.1881, + -0.2675, 1.6494, -0.3819, + -0.0245, -0.7782, 1.8026 ] + - ct: 6302 + ccm: [ 1.6401, -0.4418, -0.1984, + -0.2360, 1.7191, -0.4832, + -0.0248, -0.7221, 1.7469 ] + - Adjust: + gamma: 2.2 + contrast: 1.0 + saturation: 1.0 + - Agc: +...