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{
    "id": 19252,
    "url": "https://patchwork.libcamera.org/api/patches/19252/?format=api",
    "web_url": "https://patchwork.libcamera.org/patch/19252/",
    "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": "<20231130142534.2075-5-naush@raspberrypi.com>",
    "date": "2023-11-30T14:25:32",
    "name": "[libcamera-devel,v4,4/6] libcamera: control: Add vendor control id range reservation",
    "commit_ref": "d3365b358f350931ce5b1e51c39c23fa47b4a7ca",
    "pull_url": null,
    "state": "accepted",
    "archived": false,
    "hash": "a27581dd87d9c98692753c90455a4b81e13340db",
    "submitter": {
        "id": 34,
        "url": "https://patchwork.libcamera.org/api/people/34/?format=api",
        "name": "Naushir Patuck",
        "email": "naush@raspberrypi.com"
    },
    "delegate": null,
    "mbox": "https://patchwork.libcamera.org/patch/19252/mbox/",
    "series": [
        {
            "id": 4091,
            "url": "https://patchwork.libcamera.org/api/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/19252/comments/",
    "check": "pending",
    "checks": "https://patchwork.libcamera.org/api/patches/19252/checks/",
    "tags": {},
    "headers": {
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        "To": "libcamera-devel@lists.libcamera.org",
        "Date": "Thu, 30 Nov 2023 14:25:32 +0000",
        "Message-Id": "<20231130142534.2075-5-naush@raspberrypi.com>",
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        "Subject": "[libcamera-devel] [PATCH v4 4/6] libcamera: control: Add vendor\n\tcontrol id range reservation",
        "X-BeenThere": "libcamera-devel@lists.libcamera.org",
        "X-Mailman-Version": "2.1.29",
        "Precedence": "list",
        "List-Id": "<libcamera-devel.lists.libcamera.org>",
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        "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>",
        "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": "Add a new control_ranges.yaml file that is used to reserve control id\nranges/offsets for libcamera and vendor specific controls. This file is\nused by the gen-controls.py script to generate control id values for\neach control.\n\nDraft controls now have a separate range from core libcamera controls,\nbreaking the existing numbering behaviour.\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>\nReviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>\n---\n include/libcamera/meson.build     |  3 ++-\n src/libcamera/control_ranges.yaml | 18 ++++++++++++++++++\n src/libcamera/meson.build         |  4 +++-\n utils/gen-controls.py             | 15 ++++++++++++---\n 4 files changed, 35 insertions(+), 5 deletions(-)\n create mode 100644 src/libcamera/control_ranges.yaml",
    "diff": "diff --git a/include/libcamera/meson.build b/include/libcamera/meson.build\nindex c46a4e701ac4..a2bb5d163ece 100644\n--- a/include/libcamera/meson.build\n+++ b/include/libcamera/meson.build\n@@ -74,12 +74,13 @@ foreach mode, entry : controls_map\n     endif\n \n     template_file = files(outfile + '.in')\n+    ranges_file = files('../../src/libcamera/control_ranges.yaml')\n     control_headers += custom_target(header + '_h',\n                                      input : input_files,\n                                      output : outfile,\n                                      command : [gen_controls, '-o', '@OUTPUT@',\n                                                 '--mode', mode, '-t', template_file,\n-                                                '@INPUT@'],\n+                                                '-r', ranges_file, '@INPUT@'],\n                                      install : true,\n                                      install_dir : libcamera_headers_install_dir)\n endforeach\ndiff --git a/src/libcamera/control_ranges.yaml b/src/libcamera/control_ranges.yaml\nnew file mode 100644\nindex 000000000000..d42447d04647\n--- /dev/null\n+++ b/src/libcamera/control_ranges.yaml\n@@ -0,0 +1,18 @@\n+# SPDX-License-Identifier: LGPL-2.1-or-later\n+#\n+# Copyright (C) 2023, Raspberry Pi Ltd\n+#\n+%YAML 1.1\n+---\n+# Specifies the control id ranges/offsets for core/draft libcamera and vendor\n+# controls and properties.\n+ranges:\n+  # Core libcamera controls\n+  libcamera: 0\n+  # Draft designated libcamera controls\n+  draft: 10000\n+  # Raspberry Pi vendor controls\n+  rpi: 20000\n+  # Next range starts at 30000\n+\n+...\ndiff --git a/src/libcamera/meson.build b/src/libcamera/meson.build\nindex 6d9902e6ffd1..45f63e932e4f 100644\n--- a/src/libcamera/meson.build\n+++ b/src/libcamera/meson.build\n@@ -141,11 +141,13 @@ foreach mode, input_files : controls_mode_files\n         template_file = files('property_ids.cpp.in')\n     endif\n \n+    ranges_file = files('control_ranges.yaml')\n     control_sources += custom_target(mode + '_cpp',\n                                      input : input_files,\n                                      output : mode + '_ids.cpp',\n                                      command : [gen_controls, '-o', '@OUTPUT@',\n-                                                '--mode', mode, '-t', template_file, '@INPUT@'])\n+                                                '--mode', mode, '-t', template_file,\n+                                                '-r', ranges_file, '@INPUT@'])\n endforeach\n \n libcamera_sources += control_sources\ndiff --git a/utils/gen-controls.py b/utils/gen-controls.py\nindex 2a633cc0aba9..8e592148af3d 100755\n--- a/utils/gen-controls.py\n+++ b/utils/gen-controls.py\n@@ -239,7 +239,7 @@ ${vendor_controls_str}\n     }\n \n \n-def generate_h(controls, mode):\n+def generate_h(controls, mode, ranges):\n     enum_template_start = string.Template('''enum ${name}Enum {''')\n     enum_value_template = string.Template('''\\t${name} = ${value},''')\n     enum_values_template = string.Template('''extern const std::array<const ControlValue, ${size}> ${name}Values;''')\n@@ -254,8 +254,10 @@ def generate_h(controls, mode):\n \n         vendor = 'draft' if ctrl.is_draft else ctrl.vendor\n         if vendor not in ctrls:\n+            if vendor not in ranges.keys():\n+                raise RuntimeError(f'Control id range is not defined for vendor {vendor}')\n+            id_value[vendor] = ranges[vendor] + 1\n             ids[vendor] = []\n-            id_value[vendor] = 1\n             ctrls[vendor] = []\n \n         # Core and draft controls use the same ID value\n@@ -341,6 +343,8 @@ def main(argv):\n                         help='Mode of operation')\n     parser.add_argument('--output', '-o', metavar='file', type=str,\n                         help='Output file name. Defaults to standard output if not specified.')\n+    parser.add_argument('--ranges', '-r', type=str, required=True,\n+                        help='Control id range reservation file.')\n     parser.add_argument('--template', '-t', dest='template', type=str, required=True,\n                         help='Template file name.')\n     parser.add_argument('input', type=str, nargs='+',\n@@ -348,6 +352,11 @@ def main(argv):\n \n     args = parser.parse_args(argv[1:])\n \n+    ranges = {}\n+    with open(args.ranges, 'rb') as f:\n+        data = open(args.ranges, 'rb').read()\n+        ranges = yaml.safe_load(data)['ranges']\n+\n     controls = []\n     for input in args.input:\n         with open(input, 'rb') as f:\n@@ -359,7 +368,7 @@ def main(argv):\n     if args.template.endswith('.cpp.in'):\n         data = generate_cpp(controls)\n     elif args.template.endswith('.h.in'):\n-        data = generate_h(controls, args.mode)\n+        data = generate_h(controls, args.mode, ranges)\n     else:\n         raise RuntimeError('Unknown template type')\n \n",
    "prefixes": [
        "libcamera-devel",
        "v4",
        "4/6"
    ]
}