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{ "id": 4065, "url": "https://patchwork.libcamera.org/api/covers/4065/?format=api", "web_url": "https://patchwork.libcamera.org/cover/4065/", "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": "<20200616194523.23268-1-email@uajain.com>", "date": "2020-06-16T19:45:32", "name": "[libcamera-devel,v5,0/6] Introduce UVC hotplugging support", "submitter": { "id": 1, "url": "https://patchwork.libcamera.org/api/people/1/?format=api", "name": "Umang Jain", "email": "email@uajain.com" }, "mbox": "https://patchwork.libcamera.org/cover/4065/mbox/", "series": [ { "id": 1009, "url": "https://patchwork.libcamera.org/api/series/1009/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=1009", "date": "2020-06-16T19:45:33", "name": "Introduce UVC hotplugging support", "version": 5, "mbox": "https://patchwork.libcamera.org/series/1009/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/covers/4065/comments/", "headers": { "Return-Path": "<bounces+15657259-5c31-libcamera-devel=lists.libcamera.org@em7280.uajain.com>", "Received": [ "from o1.f.az.sendgrid.net (o1.f.az.sendgrid.net [208.117.55.132])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id D73C1603C4\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tTue, 16 Jun 2020 21:45:34 +0200 (CEST)", "by filter0135p3las1.sendgrid.net with SMTP id\n\tfilter0135p3las1-31150-5EE9215C-100\n\t2020-06-16 19:45:32.775346366 +0000 UTC m=+696613.763536559", "from mail.uajain.com (unknown)\n\tby ismtpd0008p1hnd1.sendgrid.net (SG) with ESMTP\n\tid bOjg1rY5Q3-ViCCarMv85g Tue, 16 Jun 2020 19:45:32.528 +0000 (UTC)" ], "Authentication-Results": "lancelot.ideasonboard.com; dkim=pass (1024-bit key; \n\tunprotected) header.d=uajain.com\n\theader.i=@uajain.com header.b=\"eZOXOXmb\"; \n\tdkim-atps=neutral", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=uajain.com;\n\th=from:subject:mime-version:to:cc:content-type:\n\tcontent-transfer-encoding;\n\ts=s1; bh=GMq6a7YbGQ5jWaj9l4gSPCTWEOe6U+/nbpJJpx8q/Bg=;\n\tb=eZOXOXmbHuzQgeUoNq9O2iayxF/7R8zhwRcX+nw6llh1GohyWfEe1t2rYCtTak4nbOZt\n\tCoj1yfAK1r5ZwkUJFA53o13aia30M4fROx6sVJSX0LcSv8qaBaTIvUFQPyRBefU6f0qs13\n\tu8Ri8FFRuhOtcON/7hKbQjseth9o0LNeI=", "From": "Umang Jain <email@uajain.com>", "Date": "Tue, 16 Jun 2020 19:45:32 +0000 (UTC)", "Message-Id": "<20200616194523.23268-1-email@uajain.com>", "Mime-Version": "1.0", "X-SG-EID": "1Q40EQ7YGir8a9gjSIAdTjhngY657NMk9ckeo4dbHZDiOpywc/L3L9rFqlwE4KPcZSRriRpMrvF+w7NThKsF/EM5+TBU7M/eEzrVLp9sOiTJEiVNMkPnbkKGOxghb1AS6dyNJXPF3G45mB89RKDxJ8i+2H010mcgb1grItPOnr0eaMHV4Seer5M4/Ftbwd34xRBNdFU9hJ0VadaM5vjMt5nNCnrF6kOmkMEaSAOHCniK9cwXUI9QNd64suapfkMk", "To": "laurent.pinchart@ideasonboard.com, kieran.bingham@ideasonboard.com,\n\tlibcamera-devel@lists.libcamera.org", "Content-Type": "text/plain; charset=us-ascii", "Content-Transfer-Encoding": "7bit", "Subject": "[libcamera-devel] [PATCH v5 0/6] Introduce UVC hotplugging support", "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": "Tue, 16 Jun 2020 19:45:35 -0000" }, "content": "v4->v5:\n - Rework \"libcamera: CameraManager: Drop the vector of created\n PipelineHandlers\" commit to guard against the possibility of\n pipeline handler getting deleted in PipelineHandler::disconnect().\n Add a _lot_ of documentation to it via commit message and a comment.\n - Make sure no use-after-free errors are present when the unit-test\n runs under valgrind. Fold the patch given by Laurent in previous\n review to properly address and document it.\n - Provide more past context to \"libcamera: CameraManager: Drop the\n vector of created PipelineHandlers\" in commit message, to 'why'\n pipes_ vector is not needed anymore.\n - Few typos fixes.\n\nv3->v4:\n - Introduce one additional commit to eliminate Pipehandlers' vector\n from CameraManager. It was leaving behind a leaked reference which\n was causing unclean unbind->bind operation (due to dangling dirs)\n for the hotplug unit test to run.\n - Simplify hotplug unit test with use of std::ofstream.\n - Change CameraManager::Private::addCamera() signature to accept\n Camera arg as pass-by-value instead of pass-by-reference.\n - qcam: Finalize HotplugEvent naming with ::HotPlug and ::HotUnplug\n - Few small improvements in commit messages and rebase. \n\nUmang Jain (6):\n libcamera: CameraManager: Drop the vector of created PipelineHandlers\n libcamera: camera_manager: Refactor pipelines creation into separate\n function\n libcamera: device_enumerator: Emit a signal when new devices are added\n libcamera: camera_manager: Introduce signals when a camera is added or\n removed\n qcam: main_window: Introduce initial hotplug support\n tests: Introduce hotplug hot-unplug unit test\n\n include/libcamera/camera_manager.h | 6 +-\n .../libcamera/internal/device_enumerator.h | 4 +\n src/libcamera/camera_manager.cpp | 65 ++++++---\n src/libcamera/device_enumerator.cpp | 13 ++\n src/libcamera/pipeline_handler.cpp | 20 ++-\n src/qcam/main_window.cpp | 76 +++++++++++\n src/qcam/main_window.h | 6 +\n test/hotplug-cameras.cpp | 128 ++++++++++++++++++\n test/meson.build | 1 +\n 9 files changed, 298 insertions(+), 21 deletions(-)\n create mode 100644 test/hotplug-cameras.cpp" }