{"id":3728,"url":"https://patchwork.libcamera.org/api/1.1/patches/3728/?format=json","web_url":"https://patchwork.libcamera.org/patch/3728/","project":{"id":1,"url":"https://patchwork.libcamera.org/api/1.1/projects/1/?format=json","name":"libcamera","link_name":"libcamera","list_id":"libcamera_core","list_email":"libcamera-devel@lists.libcamera.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20200509090456.3496481-4-jacopo@jmondi.org>","date":"2020-05-09T09:04:46","name":"[libcamera-devel,v11,03/13] media: v4l2-ctrl: Document V4L2_CID_CAMERA_ORIENTATION","commit_ref":null,"pull_url":null,"state":"not-applicable","archived":false,"hash":"996ff66b100aadf46d86fe6db23aa5f31e7c75a1","submitter":{"id":3,"url":"https://patchwork.libcamera.org/api/1.1/people/3/?format=json","name":"Jacopo Mondi","email":"jacopo@jmondi.org"},"delegate":{"id":15,"url":"https://patchwork.libcamera.org/api/1.1/users/15/?format=json","username":"jmondi","first_name":"Jacopo","last_name":"Mondi","email":"jacopo@jmondi.org"},"mbox":"https://patchwork.libcamera.org/patch/3728/mbox/","series":[{"id":889,"url":"https://patchwork.libcamera.org/api/1.1/series/889/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=889","date":"2020-05-09T09:04:43","name":"media: report camera properties","version":11,"mbox":"https://patchwork.libcamera.org/series/889/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/3728/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/3728/checks/","tags":{},"headers":{"Return-Path":"","Received":["from relay5-d.mail.gandi.net (relay5-d.mail.gandi.net\n\t[217.70.183.197])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 9D187603E2\n\tfor ;\n\tSat, 9 May 2020 11:02:02 +0200 (CEST)","from uno.homenet.telecomitalia.it (a-ur1-85.tin.it\n\t[212.216.150.148]) (Authenticated sender: jacopo@jmondi.org)\n\tby relay5-d.mail.gandi.net (Postfix) with ESMTPSA id 22A621C000C;\n\tSat, 9 May 2020 09:01:59 +0000 (UTC)"],"X-Originating-IP":"212.216.150.148","From":"Jacopo Mondi ","To":"linux-media@vger.kernel.org (open list:MEDIA INPUT INFRASTRUCTURE\n\t(V4L/DVB)), libcamera-devel@lists.libcamera.org,\n\tMauro Carvalho Chehab ,\n\tHans Verkuil ,\n\tSakari Ailus ,\n\tLaurent Pinchart ","Cc":"Jacopo Mondi ,\n\ttfiga@google.com,\n\tpavel@ucw.cz","Date":"Sat, 9 May 2020 11:04:46 +0200","Message-Id":"<20200509090456.3496481-4-jacopo@jmondi.org>","X-Mailer":"git-send-email 2.26.1","In-Reply-To":"<20200509090456.3496481-1-jacopo@jmondi.org>","References":"<20200509090456.3496481-1-jacopo@jmondi.org>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","Subject":"[libcamera-devel] [PATCH v11 03/13] media: v4l2-ctrl: Document\n\tV4L2_CID_CAMERA_ORIENTATION","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","X-List-Received-Date":"Sat, 09 May 2020 09:02:02 -0000"},"content":"Add documentation for the V4L2_CID_CAMERA_ORIENTATION camera\ncontrol. The newly added read-only control reports the camera device\norientation relative to the usage orientation of the system the camera\nis installed on.\n\nSigned-off-by: Jacopo Mondi \n---\n .../media/v4l/ext-ctrls-camera.rst | 30 +++++++++++++++++++\n 1 file changed, 30 insertions(+)","diff":"diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-camera.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-camera.rst\nindex e39f84d2447f8..5d7fca799f2a8 100644\n--- a/Documentation/userspace-api/media/v4l/ext-ctrls-camera.rst\n+++ b/Documentation/userspace-api/media/v4l/ext-ctrls-camera.rst\n@@ -510,6 +510,36 @@ 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_ORIENTATION (menu)``\n+ This read-only control describes the camera orientation by reporting its\n+ mounting position on the device where the camera is installed. The control\n+ 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 control is expressed\n+ as a position relative to the device's intended usage orientation. For\n+ example, a camera installed on the user-facing side of a phone, a tablet or\n+ a laptop device is said to be have ``V4L2_CAMERA_ORIENTATION_FRONT``\n+ orientation, while a camera installed on the opposite side of the front one\n+ is said to be have ``V4L2_CAMERA_ORIENTATION_BACK`` orientation. Camera\n+ sensors not directly attached to the device, or attached in a way that\n+ allows them to move freely, such as webcams and digital cameras, are said to\n+ have the ``V4L2_CAMERA_ORIENTATION_EXTERNAL`` orientation.\n+\n+\n+\n+.. flat-table::\n+ :header-rows: 0\n+ :stub-columns: 0\n+\n+ * - ``V4L2_CAMERA_ORIENTATION_FRONT``\n+ - The camera is oriented towards the user facing side of the device.\n+ * - ``V4L2_CAMERA_ORIENTATION_BACK``\n+ - The camera is oriented towards the back facing side of the device.\n+ * - ``V4L2_CAMERA_ORIENTATION_EXTERNAL``\n+ - The camera is not directly attached to the device and is 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","v11","03/13"]}