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charset=\"utf-8\"","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","From":"Javier Tia ","To":"libcamera-devel@lists.libcamera.org","Date":"Thu, 07 May 2026 10:03:43 -0600","Subject":"[PATCH v1 2/2] ipa: simple: data: Add OV2740 tuning file","Cc":"mzamazal@redhat.com, kieran.bingham@ideasonboard.com,\n\trobert.mader@collabora.com, johannes.goede@oss.qualcomm.com,\n\tlaurent.pinchart@ideasonboard.com","In-Reply-To":"<177817025814.1112523.8335692307235726369@jetm.me>","References":"<177817025814.1112523.8335692307235726369@jetm.me>","Message-Id":"<20260507161103.3D1441EA006B@mailuser.phl.internal>","X-BeenThere":"libcamera-devel@lists.libcamera.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "},"content":"Add a tuning file for the OV2740 sensor calibrated from the Intel IPU6\nAIQB binary (OV2740_CJFLE23_ADL.aiqb) shipped with the Lenovo ThinkPad\nX1 Carbon Gen 10 (Alder Lake, JP2 module, Chicony CJFLE23 camera).\n\nBlack level is 0x40 at 10-bit (64 ADU), stored as the 16-bit value 4096\nper the BlackLevel algorithm convention (value >> 8 = 16 at 8-bit scale).\n\nAWB gain limits are derived from the minimum R/G and B/G chromaticities\nacross the 8 calibrated illuminants (2319 K to 6302 K), with a 10%\nheadroom margin: maxGainR=2.49, maxGainB=3.07.\n\nEight CCMs are extracted from the AIQB advanced color matrix records\n(record id=25, float format), covering illuminants from 2319 K\n(incandescent) to 6302 K (daylight).\n\nSigned-off-by: Javier Tia \n---\n src/ipa/simple/data/meson.build | 1 +\n src/ipa/simple/data/ov2740.yaml | 52 +++++++++++++++++++++++++++++++++\n 2 files changed, 53 insertions(+)\n create mode 100644 src/ipa/simple/data/ov2740.yaml","diff":"diff --git a/src/ipa/simple/data/meson.build b/src/ipa/simple/data/meson.build\nindex 92795ee4..e3e4de74 100644\n--- a/src/ipa/simple/data/meson.build\n+++ b/src/ipa/simple/data/meson.build\n@@ -1,6 +1,7 @@\n # SPDX-License-Identifier: CC0-1.0\n \n conf_files = files([\n+ 'ov2740.yaml',\n 'uncalibrated.yaml',\n ])\n \ndiff --git a/src/ipa/simple/data/ov2740.yaml b/src/ipa/simple/data/ov2740.yaml\nnew file mode 100644\nindex 00000000..da7e1efe\n--- /dev/null\n+++ b/src/ipa/simple/data/ov2740.yaml\n@@ -0,0 +1,52 @@\n+# SPDX-License-Identifier: CC0-1.0\n+# Calibrated from OV2740_CJFLE23_ADL.aiqb (Lenovo JP2 module, IPU6 ADL)\n+%YAML 1.1\n+---\n+version: 1\n+algorithms:\n+ - BlackLevel:\n+ blackLevel: 4096\n+ - Awb:\n+ maxGainR: 2.49\n+ maxGainB: 3.07\n+ speed: 0.25\n+ - Ccm:\n+ ccms:\n+ - ct: 2319\n+ ccm: [ 1.5938, -0.1714, -0.4224,\n+ -0.6134, 1.9612, -0.3478,\n+ -0.4710, -1.8500, 3.3210 ]\n+ - ct: 2854\n+ ccm: [ 1.6119, -0.3132, -0.2987,\n+ -0.4418, 1.8227, -0.3809,\n+ -0.1017, -1.3958, 2.4975 ]\n+ - ct: 2884\n+ ccm: [ 1.7739, -0.6655, -0.1085,\n+ -0.4113, 1.6619, -0.2506,\n+ -0.0150, -1.1661, 2.1811 ]\n+ - ct: 3239\n+ ccm: [ 1.8298, -0.6636, -0.1662,\n+ -0.4086, 1.7373, -0.3287,\n+ -0.0500, -1.0836, 2.1335 ]\n+ - ct: 3865\n+ ccm: [ 1.8836, -0.7430, -0.1406,\n+ -0.3653, 1.7000, -0.3348,\n+ -0.0542, -0.8442, 1.8984 ]\n+ - ct: 4136\n+ ccm: [ 1.9043, -0.8348, -0.0695,\n+ -0.3241, 1.6389, -0.3148,\n+ 0.0262, -0.9593, 1.9332 ]\n+ - ct: 4939\n+ ccm: [ 1.6371, -0.4490, -0.1881,\n+ -0.2675, 1.6494, -0.3819,\n+ -0.0245, -0.7782, 1.8026 ]\n+ - ct: 6302\n+ ccm: [ 1.6401, -0.4418, -0.1984,\n+ -0.2360, 1.7191, -0.4832,\n+ -0.0248, -0.7221, 1.7469 ]\n+ - Adjust:\n+ gamma: 2.2\n+ contrast: 1.0\n+ saturation: 1.0\n+ - Agc:\n+...\n","prefixes":["v1","2/2"]}