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{ "id": 3411, "url": "https://patchwork.libcamera.org/api/patches/3411/?format=api", "web_url": "https://patchwork.libcamera.org/patch/3411/", "project": { "id": 1, "url": "https://patchwork.libcamera.org/api/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": "<20200407163825.1766483-3-jacopo@jmondi.org>", "date": "2020-04-07T16:38:16", "name": "[libcamera-devel,v8,02/11] media: v4l2-ctrl: Document V4L2_CID_CAMERA_SENSOR_LOCATION", "commit_ref": null, "pull_url": null, "state": "not-applicable", "archived": false, "hash": "28acf6ed974502fb163fd0ddaebd056d334f7f9c", "submitter": { "id": 3, "url": "https://patchwork.libcamera.org/api/people/3/?format=api", "name": "Jacopo Mondi", "email": "jacopo@jmondi.org" }, "delegate": { "id": 15, "url": "https://patchwork.libcamera.org/api/users/15/?format=api", "username": "jmondi", "first_name": "Jacopo", "last_name": "Mondi", "email": "jacopo@jmondi.org" }, "mbox": "https://patchwork.libcamera.org/patch/3411/mbox/", "series": [ { "id": 801, "url": "https://patchwork.libcamera.org/api/series/801/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=801", "date": "2020-04-07T16:38:14", "name": "media: Report camera sensor properties", "version": 8, "mbox": "https://patchwork.libcamera.org/series/801/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/patches/3411/comments/", "check": "pending", "checks": "https://patchwork.libcamera.org/api/patches/3411/checks/", "tags": {}, "headers": { "Return-Path": "<jacopo@jmondi.org>", "Received": [ "from relay2-d.mail.gandi.net (relay2-d.mail.gandi.net\n\t[217.70.183.194])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id F2B5E600F0\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tTue, 7 Apr 2020 18:35:33 +0200 (CEST)", "from localhost.localdomain (2-224-242-101.ip172.fastwebnet.it\n\t[2.224.242.101]) (Authenticated sender: jacopo@jmondi.org)\n\tby relay2-d.mail.gandi.net (Postfix) with ESMTPSA id 4114E4000F;\n\tTue, 7 Apr 2020 16:35:32 +0000 (UTC)" ], "X-Originating-IP": "2.224.242.101", "From": "Jacopo Mondi <jacopo@jmondi.org>", "To": "Mauro Carvalho Chehab <mchehab@kernel.org>,\n\tHans Verkuil <hverkuil-cisco@xs4all.nl>,\n\tSakari Ailus <sakari.ailus@linux.intel.com>,\n\tLaurent Pinchart <laurent.pinchart@ideasonboard.com>, tfiga@google.com,\n\tpavel@ucw.cz", "Cc": "Jacopo Mondi <jacopo@jmondi.org>,\n\tlinux-media@vger.kernel.org (open list:MEDIA INPUT INFRASTRUCTURE\n\t(V4L/DVB)), libcamera-devel@lists.libcamera.org", "Date": "Tue, 7 Apr 2020 18:38:16 +0200", "Message-Id": "<20200407163825.1766483-3-jacopo@jmondi.org>", "X-Mailer": "git-send-email 2.26.0", "In-Reply-To": "<20200407163825.1766483-1-jacopo@jmondi.org>", "References": "<20200407163825.1766483-1-jacopo@jmondi.org>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Subject": "[libcamera-devel] [PATCH v8 02/11] media: v4l2-ctrl: Document\n\tV4L2_CID_CAMERA_SENSOR_LOCATION", "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>", "X-List-Received-Date": "Tue, 07 Apr 2020 16:35:34 -0000" }, "content": "Add documentation for the V4L2_CID_CAMERA_SENSOR_LOCATION camera\ncontrol. The newly added read-only control reports the camera device\nmounting position.\n\nSigned-off-by: Jacopo Mondi <jacopo@jmondi.org>\n---\n .../media/uapi/v4l/ext-ctrls-camera.rst | 32 +++++++++++++++++++\n 1 file changed, 32 insertions(+)", "diff": "diff --git a/Documentation/media/uapi/v4l/ext-ctrls-camera.rst b/Documentation/media/uapi/v4l/ext-ctrls-camera.rst\nindex 51c1d5c9eb00..b151c016256c 100644\n--- a/Documentation/media/uapi/v4l/ext-ctrls-camera.rst\n+++ b/Documentation/media/uapi/v4l/ext-ctrls-camera.rst\n@@ -510,6 +510,38 @@ enum v4l2_scene_mode -\n value down. A value of zero stops the motion if one is in progress\n and has no effect otherwise.\n \n+``V4L2_CID_CAMERA_SENSOR_LOCATION (integer)``\n+ This read-only control describes the camera sensor location by reporting\n+ its mounting position on the device where the camera is installed. The\n+ control value is constant and not modifiable by software. This control is\n+ particularly meaningful for devices which have a well defined orientation,\n+ such as phones, laptops and portable devices since the camera location is\n+ expressed as a position relative to the device's intended usage orientation.\n+ For example, a camera sensor installed on the user-facing side of a phone,\n+ a tablet or a laptop device is said to be installed in the\n+ ``V4L2_LOCATION_FRONT`` location while camera sensors installed on the side\n+ opposite the front one are said to be installed in the\n+ ``V4L2_LOCATION_BACK`` location. Camera sensors not directly attached to\n+ the device or attached in a way that allows them to move freely, such as\n+ webcams and digital cameras, are said to have the ``V4L2_LOCATION_EXTERNAL``\n+ location.\n+\n+\n+\n+.. flat-table::\n+ :header-rows: 0\n+ :stub-columns: 0\n+\n+ * - ``V4L2_LOCATION_FRONT``\n+ - The camera sensor is located on the front side of the device.\n+ * - ``V4L2_LOCATION_BACK``\n+ - The camera sensor is located on the back side of the device.\n+ * - ``V4L2_LOCATION_EXTERNAL``\n+ - The camera sensor is not directly attached to the device and is\n+ freely movable.\n+\n+\n+\n .. [#f1]\n This control may be changed to a menu control in the future, if more\n options are required.\n", "prefixes": [ "libcamera-devel", "v8", "02/11" ] }