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{ "id": 19254, "url": "https://patchwork.libcamera.org/api/1.1/patches/19254/?format=api", "web_url": "https://patchwork.libcamera.org/patch/19254/", "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": "<20231130142534.2075-7-naush@raspberrypi.com>", "date": "2023-11-30T14:25:34", "name": "[libcamera-devel,v4,6/6] documentation: Document vendor specific controls and properties handling", "commit_ref": "cbfbab48a7c0b479c2281cceaf11fcd2afed1093", "pull_url": null, "state": "accepted", "archived": false, "hash": "48a50298f1db346ab13527f61532e0774e342f40", "submitter": { "id": 34, "url": "https://patchwork.libcamera.org/api/1.1/people/34/?format=api", "name": "Naushir Patuck", "email": "naush@raspberrypi.com" }, "delegate": null, "mbox": "https://patchwork.libcamera.org/patch/19254/mbox/", "series": [ { "id": 4091, "url": "https://patchwork.libcamera.org/api/1.1/series/4091/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=4091", "date": "2023-11-30T14:25:28", "name": "Vendor controls and properties", "version": 4, "mbox": "https://patchwork.libcamera.org/series/4091/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/patches/19254/comments/", "check": "pending", "checks": "https://patchwork.libcamera.org/api/patches/19254/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 1DA3EC32BC\n\tfor <parsemail@patchwork.libcamera.org>;\n\tThu, 30 Nov 2023 14:25:51 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id C5037629DF;\n\tThu, 30 Nov 2023 15:25:50 +0100 (CET)", "from mail-ej1-x62a.google.com (mail-ej1-x62a.google.com\n\t[IPv6:2a00:1450:4864:20::62a])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 03A04629D8\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tThu, 30 Nov 2023 15:25:47 +0100 (CET)", "by mail-ej1-x62a.google.com with SMTP id\n\ta640c23a62f3a-a013d22effcso145617666b.2\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tThu, 30 Nov 2023 06:25:46 -0800 (PST)", "from localhost.localdomain ([88.97.53.79])\n\tby smtp.gmail.com with ESMTPSA id\n\ta5-20020a17090640c500b009e50ea0a05asm725577ejk.99.2023.11.30.06.25.45\n\t(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n\tThu, 30 Nov 2023 06:25:45 -0800 (PST)" ], "DKIM-Signature": [ "v=1; 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\n\tThu, 30 Nov 2023 06:25:46 -0800 (PST)", "To": "libcamera-devel@lists.libcamera.org", "Date": "Thu, 30 Nov 2023 14:25:34 +0000", "Message-Id": "<20231130142534.2075-7-naush@raspberrypi.com>", "X-Mailer": "git-send-email 2.34.1", "In-Reply-To": "<20231130142534.2075-1-naush@raspberrypi.com>", "References": "<20231130142534.2075-1-naush@raspberrypi.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Subject": "[libcamera-devel] [PATCH v4 6/6] documentation: Document vendor\n\tspecific controls and properties handling", "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": "Naushir Patuck via libcamera-devel\n\t<libcamera-devel@lists.libcamera.org>", "Reply-To": "Naushir Patuck <naush@raspberrypi.com>", "Errors-To": "libcamera-devel-bounces@lists.libcamera.org", "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>" }, "content": "Add some documentation to the pipeline handler file describing how to\nimplement and handle vendor specific controls and properties with a\nsmall example.\n\nSigned-off-by: Naushir Patuck <naush@raspberrypi.com>\nReviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>\nReviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>\n---\n Documentation/guides/pipeline-handler.rst | 52 +++++++++++++++++++++++\n 1 file changed, 52 insertions(+)", "diff": "diff --git a/Documentation/guides/pipeline-handler.rst b/Documentation/guides/pipeline-handler.rst\nindex 66d428a19c4f..26dc93589382 100644\n--- a/Documentation/guides/pipeline-handler.rst\n+++ b/Documentation/guides/pipeline-handler.rst\n@@ -672,6 +672,58 @@ handling controls:\n #include <libcamera/controls.h>\n #include <libcamera/control_ids.h>\n \n+Vendor-specific controls and properties\n+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n+\n+Vendor-specific controls and properties must be defined in a separate YAML file\n+and included in the build by defining the pipeline handler to file mapping in\n+include/libcamera/meson.build. These YAML files live in the src/libcamera\n+directory.\n+\n+For example, adding a Raspberry Pi vendor control file for the PiSP pipeline\n+handler is done with the following mapping:\n+\n+.. code-block:: meson\n+\n+ controls_map = {\n+ 'controls': {\n+ 'draft': 'control_ids_draft.yaml',\n+ 'libcamera': 'control_ids_core.yaml',\n+ 'rpi/pisp': 'control_ids_rpi.yaml',\n+ },\n+\n+ 'properties': {\n+ 'draft': 'property_ids_draft.yaml',\n+ 'libcamera': 'property_ids_core.yaml',\n+ }\n+ }\n+\n+The pipeline handler named above must match the pipeline handler option string\n+specified in the meson build configuration.\n+\n+Vendor-specific controls and properties must contain a `vendor: <vendor_string>`\n+tag in the YAML file. Every unique vendor tag must define a unique and\n+non-overlapping range of reserved control IDs in src/libcamera/control_ranges.yaml.\n+\n+For example, the following block defines a vendor-specific control with the\n+`rpi` vendor tag:\n+\n+.. code-block:: yaml\n+\n+ vendor: rpi\n+ controls:\n+ - PispConfigDumpFile:\n+ type: string\n+ description: |\n+ Triggers the Raspberry Pi PiSP pipeline handler to generate a JSON\n+ formatted dump of the Backend configuration to the filename given by the\n+ value of the control.\n+\n+The controls will be generated in the vendor-specific namespace\n+`libcamera::controls::rpi`. Additionally a `#define\n+LIBCAMERA_HAS_RPI_VENDOR_CONTROLS` will be available to allow applications to\n+test for the availability of these controls.\n+\n Generating a default configuration\n ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n \n", "prefixes": [ "libcamera-devel", "v4", "6/6" ] }