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{ "id": 8412, "url": "https://patchwork.libcamera.org/api/patches/8412/?format=api", "web_url": "https://patchwork.libcamera.org/patch/8412/", "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": "<20200624145256.48266-15-paul.elder@ideasonboard.com>", "date": "2020-06-24T14:52:48", "name": "[libcamera-devel,v4,14/22] v4l2: v4l2_camera_proxy: noop if streamon when stream is already on", "commit_ref": null, "pull_url": null, "state": "accepted", "archived": false, "hash": "fd3a69004079fae04e18c56aa6d801988508e416", "submitter": { "id": 17, "url": "https://patchwork.libcamera.org/api/people/17/?format=api", "name": "Paul Elder", "email": "paul.elder@ideasonboard.com" }, "delegate": null, "mbox": "https://patchwork.libcamera.org/patch/8412/mbox/", "series": [ { "id": 1041, "url": "https://patchwork.libcamera.org/api/series/1041/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=1041", "date": "2020-06-24T14:52:34", "name": "Support v4l2-compliance", "version": 4, "mbox": "https://patchwork.libcamera.org/series/1041/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/patches/8412/comments/", "check": "pending", "checks": "https://patchwork.libcamera.org/api/patches/8412/checks/", "tags": {}, "headers": { "Return-Path": "<paul.elder@ideasonboard.com>", "Received": [ "from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[213.167.242.64])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 6688D609C5\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tWed, 24 Jun 2020 16:53:49 +0200 (CEST)", "from jade.rasen.tech (unknown\n\t[IPv6:2400:4051:61:600:8147:f2a2:a8c6:9087])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id 9C5FB2A8;\n\tWed, 24 Jun 2020 16:53:47 +0200 (CEST)" ], "Authentication-Results": "lancelot.ideasonboard.com; dkim=pass (1024-bit key; \n\tunprotected) header.d=ideasonboard.com\n\theader.i=@ideasonboard.com\n\theader.b=\"tNTBCbdP\"; dkim-atps=neutral", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1593010429;\n\tbh=JN+fsVE6f2eE8BPtIsHz0iQYBapWF5nD+gkAItMv/k0=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=tNTBCbdPH/RynwuZijaIxeg7M4UmVgqzG9XddrqYCc4Ftj8vbal3WphpGNJJYjRgV\n\tKB3nVGfbtGHJMhWreRRKYbyqXy00EsSt6ifv2PDQFdNqHOzXv3iUYAsFTEvD4XCsnT\n\tS3uT51psYTK6+e/WEvuS8KrLTAJ9wBP/frylt7+w=", "From": "Paul Elder <paul.elder@ideasonboard.com>", "To": "libcamera-devel@lists.libcamera.org", "Date": "Wed, 24 Jun 2020 23:52:48 +0900", "Message-Id": "<20200624145256.48266-15-paul.elder@ideasonboard.com>", "X-Mailer": "git-send-email 2.27.0", "In-Reply-To": "<20200624145256.48266-1-paul.elder@ideasonboard.com>", "References": "<20200624145256.48266-1-paul.elder@ideasonboard.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Subject": "[libcamera-devel] [PATCH v4 14/22] v4l2: v4l2_camera_proxy: noop if\n\tstreamon when stream is already on", "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>", "X-List-Received-Date": "Wed, 24 Jun 2020 14:53:49 -0000" }, "content": "If VIDIOC_STREMAON is called when the stream is already on, do a noop.\n\nSigned-off-by: Paul Elder <paul.elder@ideasonboard.com>\nReviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>\n\n---\nNo change in v4\n\nChanges in v3:\n- move isRunning check to after ownership check\n\nNew in v2: (split from \"v4l2: v4l2_camera: Add isRunning()\")\n---\n src/v4l2/v4l2_camera_proxy.cpp | 3 +++\n 1 file changed, 3 insertions(+)", "diff": "diff --git a/src/v4l2/v4l2_camera_proxy.cpp b/src/v4l2/v4l2_camera_proxy.cpp\nindex f8e8d79..7b269a5 100644\n--- a/src/v4l2/v4l2_camera_proxy.cpp\n+++ b/src/v4l2/v4l2_camera_proxy.cpp\n@@ -625,6 +625,9 @@ int V4L2CameraProxy::vidioc_streamon(V4L2CameraFile *file, int *arg)\n \tif (!hasOwnership(file))\n \t\treturn -EBUSY;\n \n+\tif (vcam_->isRunning())\n+\t\treturn 0;\n+\n \tcurrentBuf_ = 0;\n \n \treturn vcam_->streamOn();\n", "prefixes": [ "libcamera-devel", "v4", "14/22" ] }