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{ "id": 279, "url": "https://patchwork.libcamera.org/api/patches/279/?format=api", "web_url": "https://patchwork.libcamera.org/patch/279/", "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": "<20190120140435.23252-1-niklas.soderlund@ragnatech.se>", "date": "2019-01-20T14:04:35", "name": "[libcamera-devel,v2] libcamera: device_enumerator: extend documentation of DeviceMatch", "commit_ref": null, "pull_url": null, "state": "accepted", "archived": false, "hash": "93556a88a2cfc9b53baf552903d31cdb212299c3", "submitter": { "id": 5, "url": "https://patchwork.libcamera.org/api/people/5/?format=api", "name": "Niklas Söderlund", "email": "niklas.soderlund@ragnatech.se" }, "delegate": null, "mbox": "https://patchwork.libcamera.org/patch/279/mbox/", "series": [ { "id": 95, "url": "https://patchwork.libcamera.org/api/series/95/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=95", "date": "2019-01-20T14:04:35", "name": "[libcamera-devel,v2] libcamera: device_enumerator: extend documentation of DeviceMatch", "version": 2, "mbox": "https://patchwork.libcamera.org/series/95/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/patches/279/comments/", "check": "pending", "checks": "https://patchwork.libcamera.org/api/patches/279/checks/", "tags": {}, "headers": { "Return-Path": "<niklas.soderlund@ragnatech.se>", "Received": [ "from bin-mail-out-05.binero.net (bin-mail-out-05.binero.net\n\t[195.74.38.228])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 1694860C81\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tSun, 20 Jan 2019 15:06:41 +0100 (CET)", "from bismarck.berto.se (unknown [89.233.230.99])\n\tby bin-vsp-out-02.atm.binero.net (Halon) with ESMTPA\n\tid 98844484-1cbc-11e9-874f-005056917f90;\n\tSun, 20 Jan 2019 15:06:37 +0100 (CET)" ], "X-Halon-ID": "98844484-1cbc-11e9-874f-005056917f90", "Authorized-sender": "niklas@soderlund.pp.se", "From": "=?utf-8?q?Niklas_S=C3=B6derlund?= <niklas.soderlund@ragnatech.se>", "To": "libcamera-devel@lists.libcamera.org", "Date": "Sun, 20 Jan 2019 15:04:35 +0100", "Message-Id": "<20190120140435.23252-1-niklas.soderlund@ragnatech.se>", "X-Mailer": "git-send-email 2.20.1", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=UTF-8", "Content-Transfer-Encoding": "8bit", "Subject": "[libcamera-devel] [PATCH v2] libcamera: device_enumerator: extend\n\tdocumentation of DeviceMatch", "X-BeenThere": "libcamera-devel@lists.libcamera.org", "X-Mailman-Version": "2.1.23", "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": "Sun, 20 Jan 2019 14:06:41 -0000" }, "content": "Extend the document of the intended usage of DeviceMatch need for\ninformation to correctly function to find a uniquely identifiable media\ndevice.\n\nSigned-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>\n---\n* Changes since v1\n- Rephrased most of it after review comments from Laurent, Thanks!\n\n src/libcamera/device_enumerator.cpp | 12 ++++++++++++\n 1 file changed, 12 insertions(+)", "diff": "diff --git a/src/libcamera/device_enumerator.cpp b/src/libcamera/device_enumerator.cpp\nindex 55c510e3b79a415b..d41e1e580b3451ab 100644\n--- a/src/libcamera/device_enumerator.cpp\n+++ b/src/libcamera/device_enumerator.cpp\n@@ -52,6 +52,18 @@ namespace libcamera {\n *\n * The description is meant to be filled by pipeline managers and passed to a\n * device enumerator to find matching media devices.\n+ *\n+ * A DeviceMatch is created with a specific Linux device driver in mind,\n+ * therefore the name of the driver is a required property. One or more Entity\n+ * names can be added as as match criteria.\n+ *\n+ * Pipeline handlers are recommended to add entities to DeviceMatch as\n+ * appropriare to ensure that the media device they need can be uniquely\n+ * identified. This is useful when the corresponding kernel driver can produce\n+ * different graphs, for instance as a result of different driver versions or\n+ * hardware configurations, and not all those graphs are suitable for a pipeline\n+ * handler.\n+ *\n */\n \n /**\n", "prefixes": [ "libcamera-devel", "v2" ] }