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{
    "id": 18866,
    "url": "https://patchwork.libcamera.org/api/1.1/patches/18866/?format=api",
    "web_url": "https://patchwork.libcamera.org/patch/18866/",
    "project": {
        "id": 1,
        "url": "https://patchwork.libcamera.org/api/1.1/projects/1/?format=api",
        "name": "libcamera",
        "link_name": "libcamera",
        "list_id": "libcamera_core",
        "list_email": "libcamera-devel@lists.libcamera.org",
        "web_url": "",
        "scm_url": "",
        "webscm_url": ""
    },
    "msgid": "<20230724071101.5256-5-jacopo.mondi@ideasonboard.com>",
    "date": "2023-07-24T07:10:55",
    "name": "[libcamera-devel,v4,04/10] libcamera: properties: Make 'Rotation' the mounting rotation",
    "commit_ref": null,
    "pull_url": null,
    "state": "accepted",
    "archived": false,
    "hash": "5a6b72d0f853d0d1abb0ddff88c46d929a0fc426",
    "submitter": {
        "id": 143,
        "url": "https://patchwork.libcamera.org/api/1.1/people/143/?format=api",
        "name": "Jacopo Mondi",
        "email": "jacopo.mondi@ideasonboard.com"
    },
    "delegate": null,
    "mbox": "https://patchwork.libcamera.org/patch/18866/mbox/",
    "series": [
        {
            "id": 3981,
            "url": "https://patchwork.libcamera.org/api/1.1/series/3981/?format=api",
            "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=3981",
            "date": "2023-07-24T07:10:51",
            "name": "libcamera: Replace CameraConfiguration::transform",
            "version": 4,
            "mbox": "https://patchwork.libcamera.org/series/3981/mbox/"
        }
    ],
    "comments": "https://patchwork.libcamera.org/api/patches/18866/comments/",
    "check": "pending",
    "checks": "https://patchwork.libcamera.org/api/patches/18866/checks/",
    "tags": {},
    "headers": {
        "Return-Path": "<libcamera-devel-bounces@lists.libcamera.org>",
        "X-Original-To": "parsemail@patchwork.libcamera.org",
        "Delivered-To": "parsemail@patchwork.libcamera.org",
        "Received": [
            "from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id 331CCC32AA\n\tfor <parsemail@patchwork.libcamera.org>;\n\tMon, 24 Jul 2023 07:11:27 +0000 (UTC)",
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        ],
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            "v=1; a=rsa-sha256; c=relaxed/simple; d=libcamera.org;\n\ts=mail; t=1690182686;\n\tbh=xDK91yoWnPn+8AhlpzdW8lSc0qCCbfllNaIxij+HUQg=;\n\th=To:Date:In-Reply-To:References:Subject:List-Id:List-Unsubscribe:\n\tList-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:Cc:\n\tFrom;\n\tb=17mpc9u3OTXDX61fc4Ixw3V9/elpfc9+ae8zQ27On5HeUKCofpv6lRHcfWBaltxey\n\tEzUjs4cersxS2TqSd0NJWuEWNUuXID+w73zG1HqXnPQaNOUdJrAMOO1n+QI3gxv4Yz\n\tChtm8xwc/+JqEPISFWJo+gSgFm+C2cf/K+tgGnW3hiR/EYrFpw0zkoztN8FnppZrmK\n\t5MK+RhrsBF/UpheVAsi4dHqP9+0fuCYocyULITiOBMi8sTrgSw/JzP4Rp7tfFcAJGx\n\trJMBH/5uRH1pkJlxHGFkJ/ofVEUAAqvo3lJ/gotxkmnPoKZERz6xz5N0tASZB6aLmS\n\tOfTGS5qUiCndQ==",
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        "To": "libcamera-devel@lists.libcamera.org",
        "Date": "Mon, 24 Jul 2023 09:10:55 +0200",
        "Message-Id": "<20230724071101.5256-5-jacopo.mondi@ideasonboard.com>",
        "X-Mailer": "git-send-email 2.40.1",
        "In-Reply-To": "<20230724071101.5256-1-jacopo.mondi@ideasonboard.com>",
        "References": "<20230724071101.5256-1-jacopo.mondi@ideasonboard.com>",
        "MIME-Version": "1.0",
        "Content-Transfer-Encoding": "8bit",
        "Subject": "[libcamera-devel] [PATCH v4 04/10] libcamera: properties: Make\n\t'Rotation' the mounting rotation",
        "X-BeenThere": "libcamera-devel@lists.libcamera.org",
        "X-Mailman-Version": "2.1.29",
        "Precedence": "list",
        "List-Id": "<libcamera-devel.lists.libcamera.org>",
        "List-Unsubscribe": "<https://lists.libcamera.org/options/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=unsubscribe>",
        "List-Archive": "<https://lists.libcamera.org/pipermail/libcamera-devel/>",
        "List-Post": "<mailto:libcamera-devel@lists.libcamera.org>",
        "List-Help": "<mailto:libcamera-devel-request@lists.libcamera.org?subject=help>",
        "List-Subscribe": "<https://lists.libcamera.org/listinfo/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=subscribe>",
        "From": "Jacopo Mondi via libcamera-devel <libcamera-devel@lists.libcamera.org>",
        "Reply-To": "Jacopo Mondi <jacopo.mondi@ideasonboard.com>",
        "Cc": "Jacopo Mondi <jacopo.mondi@ideasonboard.com>",
        "Errors-To": "libcamera-devel-bounces@lists.libcamera.org",
        "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>"
    },
    "content": "Specify in the documentation that properties::Rotation specifies the\nmounting rotation of the camera module. This avoids confusion with the\nimage orientation which is instead expressed by\nCameraConfiguration::orientation.\n\nFor this reason, do not compensate the Rotation property when\ninitializing the CameraSensor class but report the value of\nV4L2_CID_CAMERA_SENSOR_ROTATION or 0 if the control is not available.\n\nSigned-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>\nReviewed-by: David Plowman <david.plowman@raspberrypi.com>\n---\n src/libcamera/camera_sensor.cpp | 11 +----------\n src/libcamera/property_ids.yaml |  8 ++++----\n 2 files changed, 5 insertions(+), 14 deletions(-)",
    "diff": "diff --git a/src/libcamera/camera_sensor.cpp b/src/libcamera/camera_sensor.cpp\nindex 9a033459742f..3ba364c44a40 100644\n--- a/src/libcamera/camera_sensor.cpp\n+++ b/src/libcamera/camera_sensor.cpp\n@@ -476,20 +476,11 @@ int CameraSensor::initProperties()\n \t\t\trotationTransform_ = Transform::Identity;\n \t\t}\n \n-\t\t/*\n-\t\t * Adjust property::Rotation as validateTransform() compensates\n-\t\t * for the mounting rotation. However, as a camera sensor can\n-\t\t * only compensate rotations by applying H/VFlips, only rotation\n-\t\t * of 180 degrees are automatically compensated. The other valid\n-\t\t * rotations (Rot90 and Rot270) require transposition, which the\n-\t\t * camera sensor cannot perform, so leave them untouched.\n-\t\t */\n-\t\tif (propertyValue == 180 && supportFlips_)\n-\t\t\tpropertyValue = 0;\n \t\tproperties_.set(properties::Rotation, propertyValue);\n \t} else {\n \t\tLOG(CameraSensor, Warning)\n \t\t\t<< \"Rotation control not available, default to 0 degrees\";\n+\t\tproperties_.set(properties::Rotation, propertyValue);\n \t\trotationTransform_ = Transform::Identity;\n \t}\n \ndiff --git a/src/libcamera/property_ids.yaml b/src/libcamera/property_ids.yaml\nindex 5bddafc29364..fb53081c1bd2 100644\n--- a/src/libcamera/property_ids.yaml\n+++ b/src/libcamera/property_ids.yaml\n@@ -29,10 +29,10 @@ controls:\n   - Rotation:\n       type: int32_t\n       description: |\n-        The camera rotation is expressed as the angular difference in degrees\n-        between two reference systems, one relative to the camera module, and\n-        one defined on the external world scene to be captured when projected\n-        on the image sensor pixel array.\n+        The camera physical mounting rotation, expressed as the angular\n+        difference in degrees between two reference systems, one relative to the\n+        camera module, and one defined on the external world scene to be\n+        captured when projected on the image sensor pixel array.\n \n         A camera sensor has a 2-dimensional reference system 'Rc' defined by\n         its pixel array read-out order. The origin is set to the first pixel\n",
    "prefixes": [
        "libcamera-devel",
        "v4",
        "04/10"
    ]
}