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{
    "id": 13234,
    "url": "https://patchwork.libcamera.org/api/1.1/patches/13234/?format=api",
    "web_url": "https://patchwork.libcamera.org/patch/13234/",
    "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": "<20210805222436.6263-4-laurent.pinchart@ideasonboard.com>",
    "date": "2021-08-05T22:24:29",
    "name": "[libcamera-devel,03/10] libcamera: pipeline: simple: Delay opening of video device until init()",
    "commit_ref": null,
    "pull_url": null,
    "state": "accepted",
    "archived": false,
    "hash": "2d507bc84d40755ec2c0613aa3daa798a77a405f",
    "submitter": {
        "id": 2,
        "url": "https://patchwork.libcamera.org/api/1.1/people/2/?format=api",
        "name": "Laurent Pinchart",
        "email": "laurent.pinchart@ideasonboard.com"
    },
    "delegate": null,
    "mbox": "https://patchwork.libcamera.org/patch/13234/mbox/",
    "series": [
        {
            "id": 2314,
            "url": "https://patchwork.libcamera.org/api/1.1/series/2314/?format=api",
            "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=2314",
            "date": "2021-08-05T22:24:26",
            "name": "Concurrent camera support in simple pipeline handler",
            "version": 1,
            "mbox": "https://patchwork.libcamera.org/series/2314/mbox/"
        }
    ],
    "comments": "https://patchwork.libcamera.org/api/patches/13234/comments/",
    "check": "pending",
    "checks": "https://patchwork.libcamera.org/api/patches/13234/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 80741C3235\n\tfor <parsemail@patchwork.libcamera.org>;\n\tThu,  5 Aug 2021 22:25:02 +0000 (UTC)",
            "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id AFBF96888B;\n\tFri,  6 Aug 2021 00:24:59 +0200 (CEST)",
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        ],
        "Authentication-Results": "lancelot.ideasonboard.com;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n\tunprotected) header.d=ideasonboard.com header.i=@ideasonboard.com\n\theader.b=\"ZgukgEu4\"; dkim-atps=neutral",
        "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1628202296;\n\tbh=cED4Slz0594G/5GZEExCd3pstt5tHhUSAFRaF8FPMmg=;\n\th=From:To:Subject:Date:In-Reply-To:References:From;\n\tb=ZgukgEu4AzIc55q1dQTVBKsUt1psEHmWDpsG9yiae2K4VcD+kglarLfzu06STXAQk\n\tn13JWPFe5DbCjOfJ3FEgj5lD+zF1MXTLTPatIg26Vu+1ys9fPhQr0n/CKPeNpH0SKB\n\tAwIWswb1XsWuf0x0joOJRJGsDrSOul3ZFdikgRY8=",
        "From": "Laurent Pinchart <laurent.pinchart@ideasonboard.com>",
        "To": "libcamera-devel@lists.libcamera.org",
        "Date": "Fri,  6 Aug 2021 01:24:29 +0300",
        "Message-Id": "<20210805222436.6263-4-laurent.pinchart@ideasonboard.com>",
        "X-Mailer": "git-send-email 2.31.1",
        "In-Reply-To": "<20210805222436.6263-1-laurent.pinchart@ideasonboard.com>",
        "References": "<20210805222436.6263-1-laurent.pinchart@ideasonboard.com>",
        "MIME-Version": "1.0",
        "Content-Transfer-Encoding": "8bit",
        "Subject": "[libcamera-devel] [PATCH 03/10] libcamera: pipeline: simple: Delay\n\topening of video device until init()",
        "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>",
        "Errors-To": "libcamera-devel-bounces@lists.libcamera.org",
        "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>"
    },
    "content": "The video device is currently opened in the SimpleCameraData\nconstructor. This requires opening the video devices on-demand the first\ntime they're accessed, which gets in the way of refactoring of\nper-entity data storage in the pipeline handler.\n\nMove opening of the video device to the SimpleCameraData::init()\nfunction. The on-demand open mechanism isn't touched yet, it will be\nrefactored later.\n\nSigned-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>\n---\n src/libcamera/pipeline/simple/simple.cpp | 11 +++++++++--\n 1 file changed, 9 insertions(+), 2 deletions(-)",
    "diff": "diff --git a/src/libcamera/pipeline/simple/simple.cpp b/src/libcamera/pipeline/simple/simple.cpp\nindex e0695d052629..744f842dbfe6 100644\n--- a/src/libcamera/pipeline/simple/simple.cpp\n+++ b/src/libcamera/pipeline/simple/simple.cpp\n@@ -308,6 +308,7 @@ SimpleCameraData::SimpleCameraData(SimplePipelineHandler *pipe,\n \t/* Remember at each entity where we came from. */\n \tstd::unordered_map<MediaEntity *, Entity> parents;\n \tMediaEntity *entity = nullptr;\n+\tMediaEntity *video = nullptr;\n \n \tqueue.push({ sensor, nullptr });\n \n@@ -321,7 +322,7 @@ SimpleCameraData::SimpleCameraData(SimplePipelineHandler *pipe,\n \t\tif (entity->function() == MEDIA_ENT_F_IO_V4L) {\n \t\t\tLOG(SimplePipeline, Debug)\n \t\t\t\t<< \"Found capture device \" << entity->name();\n-\t\t\tvideo_ = pipe->video(entity);\n+\t\t\tvideo = entity;\n \t\t\tbreak;\n \t\t}\n \n@@ -341,7 +342,7 @@ SimpleCameraData::SimpleCameraData(SimplePipelineHandler *pipe,\n \t\t}\n \t}\n \n-\tif (!video_)\n+\tif (!video)\n \t\treturn;\n \n \t/*\n@@ -384,6 +385,12 @@ int SimpleCameraData::init()\n \tSimpleConverter *converter = pipe->converter();\n \tint ret;\n \n+\tvideo_ = pipe->video(entities_.back().entity);\n+\tif (!video_) {\n+\t\tLOG(SimplePipeline, Error) << \"Failed to open video device\";\n+\t\treturn -ENODEV;\n+\t}\n+\n \t/*\n \t * Setup links first as some subdev drivers take active links into\n \t * account to propagate TRY formats. Such is life :-(\n",
    "prefixes": [
        "libcamera-devel",
        "03/10"
    ]
}