Show a cover letter.

GET /api/covers/15654/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "id": 15654,
    "url": "https://patchwork.libcamera.org/api/covers/15654/?format=api",
    "web_url": "https://patchwork.libcamera.org/cover/15654/",
    "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": "<20220408014231.231083-1-Rauch.Christian@gmx.de>",
    "date": "2022-04-08T01:42:27",
    "name": "[libcamera-devel,v3,0/4] generate and use fixed-sized Span Control types",
    "submitter": {
        "id": 111,
        "url": "https://patchwork.libcamera.org/api/people/111/?format=api",
        "name": "Christian Rauch",
        "email": "Rauch.Christian@gmx.de"
    },
    "mbox": "https://patchwork.libcamera.org/cover/15654/mbox/",
    "series": [
        {
            "id": 3045,
            "url": "https://patchwork.libcamera.org/api/series/3045/?format=api",
            "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=3045",
            "date": "2022-04-08T01:42:28",
            "name": "generate and use fixed-sized Span Control types",
            "version": 3,
            "mbox": "https://patchwork.libcamera.org/series/3045/mbox/"
        }
    ],
    "comments": "https://patchwork.libcamera.org/api/covers/15654/comments/",
    "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 E8119C3260\n\tfor <parsemail@patchwork.libcamera.org>;\n\tFri,  8 Apr 2022 01:42:39 +0000 (UTC)",
            "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 1286C6564F;\n\tFri,  8 Apr 2022 03:42:38 +0200 (CEST)",
            "from mout.gmx.net (mout.gmx.net [212.227.17.20])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 64617604B4\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tFri,  8 Apr 2022 03:42:35 +0200 (CEST)",
            "from localhost.localdomain ([92.10.251.63]) by mail.gmx.net\n\t(mrgmx104 [212.227.17.168]) with ESMTPSA (Nemesis) id\n\t1Mlw7f-1oJhlp39N5-00ixjM; Fri, 08 Apr 2022 03:42:34 +0200"
        ],
        "DKIM-Signature": [
            "v=1; a=rsa-sha256; c=relaxed/simple; d=libcamera.org;\n\ts=mail; t=1649382158;\n\tbh=h1Sdv6/vBxF3sryb8eKIIjdpB5tJMsyp3MUQS+p6s1I=;\n\th=To:Date:Subject:List-Id:List-Unsubscribe:List-Archive:List-Post:\n\tList-Help:List-Subscribe:From:Reply-To:From;\n\tb=UHprai7MjTPnd9w4Owe3XLjCqcwK8PQ+qZksqb5uERyNq8UbODsNgNDnaEHaBGu/1\n\tkBVQZGIVlhiV/wsXQMPyqyoJ3uC4yBznl7J1rzmdsAi8AIt4Ux8SmvnuDDIDSHi/mE\n\tQEZrPxT/wC3LBifcbsiHuARSQGzxHSGgP8c3RxH3asInuQrSVrsM/zTHLKhiokV2ce\n\tO98MHT5flHRfTb3CL5LkYrXodEcGgl+fPiwsQf4isFckznvQY4S6bA9MWtIlLim9sI\n\tuDPzjvSwJ9dvt0cUQavdkTUkZFQpYIDvMor9fmCml0sKcHv6XXv5Msz4m08nJdyRdS\n\tgjEoATzVCqdNg==",
            "v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net;\n\ts=badeba3b8450; t=1649382155;\n\tbh=h1Sdv6/vBxF3sryb8eKIIjdpB5tJMsyp3MUQS+p6s1I=;\n\th=X-UI-Sender-Class:From:To:Cc:Subject:Date;\n\tb=NU7/0O97a5h7KIKh7yNP+urq7y4jXqDm6lH1/mHoKPoB79qxyfw1SgdKvp5FzsZA4\n\tm8Ix2m5qQJd25EQyQfTGrVpYA8ihxSSmcKPa9VfI2g1vknSgYpuj+jzgHzH9VrA/Lu\n\tAhH6CSS1K3gRqQX49C0uttxAaK3lyRv4oz+ycIGc="
        ],
        "Authentication-Results": "lancelot.ideasonboard.com; dkim=pass (1024-bit key; \n\tunprotected) header.d=gmx.net header.i=@gmx.net\n\theader.b=\"NU7/0O97\"; dkim-atps=neutral",
        "X-UI-Sender-Class": "01bb95c1-4bf8-414a-932a-4f6e2808ef9c",
        "To": "libcamera-devel@lists.libcamera.org",
        "Date": "Fri,  8 Apr 2022 02:42:27 +0100",
        "Message-Id": "<20220408014231.231083-1-Rauch.Christian@gmx.de>",
        "X-Mailer": "git-send-email 2.25.1",
        "MIME-Version": "1.0",
        "X-Provags-ID": "V03:K1:/D2igQGP/LBE69iSHUhq2G+dSN20sbUQ/eVW5gSuVtrYu514Eg2\n\tKCvNDNdMKo62ct+4Dv6KDLr7lOCCqSRZFWOMeLK5Awo8vgIkPPlos5kly4DBK18Wbo6hGAS\n\tdQDjYOuhI5VC/DL0000/iGN8Urp28i4wSdhdh99MyLw1ZnP9297OIt1IapRa+KflgzI/1XO\n\t/vxoOh7jlHp3slar8Gpfw==",
        "X-Spam-Flag": "NO",
        "X-UI-Out-Filterresults": "notjunk:1; V03:K0:eY5sn8rt3pk=:yN9+BpYkxfJ900ChJThK49\n\tboXd7N8yvteSLZNmUlAzA5i01zV+3OIPsi6hPpQ5/jI0qA4kbQsf07t8Tv+z7tzUHYbedard+\n\tZhfAVFZ3TQxUkcEp+mN0bNoWbc/ju/kMwU6if3PkM+lCtUDWdBgcc73MRyXAQUfUXVuQdNOWf\n\t6QOJ0gayg7LSfb/4Rcc+NGLGzPuPbRJKfY+h50IohOa0aOEOtrY/xSDMJVRAfyEkHEREnY1+N\n\tq7WFp0OvyTrzBFT/E9J+bQX+PwVgaaXKalTSRuszd2oo2lew7KGl9exX/g+S2jzUBC241getn\n\txCjt0T2avTjO8eXtTNkPvkrtMQssFu2GDRSmnWzsUdRridin8FxkB1xOsBaf3LgXYrbqHPxRU\n\thnlEXKckjZsKQLHGIgPJYLPSS6WXxXX73qUQVVkBF2wDuU6FGs/vBiQyn8jvdcG38VJsfPFTp\n\tQPGQYEFCs4F6wNIV8yUrvau41R9ePeORAZ4HhQCVEbOkLigvJqm0FWvQWpV7FhjJVv4bYRTsn\n\tPqBWT8yXrG1G/FyQJysEpkBBj2X0H5EGt5sbMFom9Zg0Ws3UED3J/wRv8qIJW74K6exWvgmH0\n\trFBAliQXeK3RXgIi/GeIHpgSrLi2VQkaTkbxGDmMKccN0b3+9njrI0F+sc/6ROP9uelLnWcGl\n\tLxUiMN4jhElNm49RmBj5VnJ7xVqDoqzrghf3n6HI+2Qv/N/SEIeOnf0LBXNjDTp2mptpoiqtY\n\tvpahZZFiCV/la/JIy46GTYlwH8BIViSjmkne4/pLD1GXBJ42oqNb0r2JDr0e0r0XWT0cZ4TbE\n\tx0RSkyO+TnkfliqUrXUHm7FER9JP42jvvtEjmvV2fc0g4ldHdUQfcJOjV9JGlkhJCr103bSVd\n\tjjikC6xCu5ZKRds40VqkT0NwA7+32i7lx2IyryxJ3Xos2ygLC7QBPVjPxTcSwEX4PFDLty137\n\tFvr2PNXeBy6TGt0C2NPwmSQrMg7R5cLMG4Qgh/+9AqXMJtb9631icUS4sSBzSJmyCJopafNl3\n\tCHrH1TTWAlwyR2WSObNymEJ878BW3eJdL0GywVQF469NDQi6m/qhBMscXBWNuUpUQ1m281O1A\n\tQ6XP+IssKjIRB4=",
        "Subject": "[libcamera-devel] [PATCH v3 0/4] generate and use fixed-sized Span\n\tControl types",
        "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": "Christian Rauch via libcamera-devel\n\t<libcamera-devel@lists.libcamera.org>",
        "Reply-To": "Christian Rauch <Rauch.Christian@gmx.de>",
        "Errors-To": "libcamera-devel-bounces@lists.libcamera.org",
        "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>"
    },
    "content": "Hello,\n\nThis is version 3 of my fixed-sized Span patch set. It reverts my earlier changes to the Span constructors in order to keep compatibility with std::span. Since this prevents the default construction of fixed-sized Span, I am introducing std::optional<> to handle failure causes (when a requested ControlValue does not exist).\n\nBest,\nChristian\n\n\nChristian Rauch (4):\n  libcamera: controls: Define size of array controls as a shape vector\n  generate fixed- and variable-sized Span Controls\n  apply explicit fixed-sized Span type casts\n  use std::optional to handle invalid control values\n\n include/libcamera/controls.h                  |  6 ++--\n src/cam/main.cpp                              |  4 +--\n src/ipa/raspberrypi/raspberrypi.cpp           | 20 ++++++------\n src/libcamera/control_ids.yaml                |  2 +-\n src/libcamera/pipeline/ipu3/ipu3.cpp          |  9 +++---\n .../pipeline/raspberrypi/raspberrypi.cpp      |  9 +++---\n src/libcamera/property_ids.yaml               |  4 +--\n src/qcam/dng_writer.cpp                       | 15 +++++----\n utils/gen-controls.py                         | 32 +++++++++++++------\n 9 files changed, 58 insertions(+), 43 deletions(-)\n\n--\n2.25.1"
}