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{ "id": 16406, "url": "https://patchwork.libcamera.org/api/1.1/covers/16406/?format=api", "web_url": "https://patchwork.libcamera.org/cover/16406/", "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": "<20220629070416.17550-1-tomi.valkeinen@ideasonboard.com>", "date": "2022-06-29T07:04:02", "name": "[libcamera-devel,v2,00/14] Python bindings event handling", "submitter": { "id": 109, "url": "https://patchwork.libcamera.org/api/1.1/people/109/?format=api", "name": "Tomi Valkeinen", "email": "tomi.valkeinen@ideasonboard.com" }, "mbox": "https://patchwork.libcamera.org/cover/16406/mbox/", "series": [ { "id": 3230, "url": "https://patchwork.libcamera.org/api/1.1/series/3230/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=3230", "date": "2022-06-29T07:04:02", "name": "Python bindings event handling", "version": 2, "mbox": "https://patchwork.libcamera.org/series/3230/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/covers/16406/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 9952FBE173\n\tfor <parsemail@patchwork.libcamera.org>;\n\tWed, 29 Jun 2022 07:04:43 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 96F886563B;\n\tWed, 29 Jun 2022 09:04:42 +0200 (CEST)", "from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[213.167.242.64])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 5F95F60552\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tWed, 29 Jun 2022 09:04:40 +0200 (CEST)", "from deskari.lan (91-158-154-79.elisa-laajakaista.fi\n\t[91.158.154.79])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id 5C7EA4A8;\n\tWed, 29 Jun 2022 09:04:39 +0200 (CEST)" ], "DKIM-Signature": [ "v=1; a=rsa-sha256; c=relaxed/simple; d=libcamera.org;\n\ts=mail; t=1656486282;\n\tbh=jj3dizpI6ArZZZ7WrJHaft6iRD1TBV/M310eawnjA2M=;\n\th=To:Date:Subject:List-Id:List-Unsubscribe:List-Archive:List-Post:\n\tList-Help:List-Subscribe:From:Reply-To:From;\n\tb=0POIa8kJUfsjJccA22GoSeOXVL943jiaNFH8v42D3AbMIci85YRFmnL6M+K1Q4bC2\n\twoPlJFq1AwUmnjUT1xJcetlQpw7o5hr3ddVog7XUxE2rG2ehs5z9V5bwSxpEAVYwfb\n\tPEGoH1hWAfWZ5DUapJ/7ez5/AJT65NnZbm558TqZv3ZfXiD4kujRaM7T6DdwVjDDcW\n\tCsGns4Sb3ndAeXnwB8fgv1tvbIMLmQy4yndRAyaT5L7l6GWVwQizRvTND7iczYgGvB\n\tMUuESWuvPL4mNLPTcXcaDj/7eo+CN/NlIAhymQN8SB9Vnh9ndov5DCcHVMKxndYRCy\n\tfJndQJNf9/y8g==", "v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1656486279;\n\tbh=jj3dizpI6ArZZZ7WrJHaft6iRD1TBV/M310eawnjA2M=;\n\th=From:To:Cc:Subject:Date:From;\n\tb=d/lNJLNym+5KNkXG6hTeyhaiv4Vjl6fMsYgrkKX/eUMoXC2vWvxhZidj784mE4A8A\n\tMPr0ItOVxOmYhgoNtBD2OQp+xXJcMMwwrjL4TbTA1JptE5bz0rVz/2mpAdxoqSPAa+\n\ttOCb9+f0fr7vpkTI8g7VOdWBkuFRoxzP2XA2kopQ=" ], "Authentication-Results": "lancelot.ideasonboard.com; dkim=pass (1024-bit key; \n\tunprotected) header.d=ideasonboard.com\n\theader.i=@ideasonboard.com\n\theader.b=\"d/lNJLNy\"; dkim-atps=neutral", "To": "libcamera-devel@lists.libcamera.org,\n\tDavid Plowman <david.plowman@raspberrypi.com>,\n\tKieran Bingham <kieran.bingham@ideasonboard.com>,\n\tLaurent Pinchart <laurent.pinchart@ideasonboard.com>,\n\tJacopo Mondi <jacopo@jmondi.org>", "Date": "Wed, 29 Jun 2022 10:04:02 +0300", "Message-Id": "<20220629070416.17550-1-tomi.valkeinen@ideasonboard.com>", "X-Mailer": "git-send-email 2.34.1", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Subject": "[libcamera-devel] [PATCH v2 00/14] Python bindings event handling", "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": "Tomi Valkeinen via libcamera-devel\n\t<libcamera-devel@lists.libcamera.org>", "Reply-To": "Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>", "Errors-To": "libcamera-devel-bounces@lists.libcamera.org", "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>" }, "content": "Hi,\n\nv2 of the event handling series. Plenty of changes to v1:\n\n- (Hopefully) most of the review comments addressed\n- PyCameraManager no longer inherits CameraManager. This also fixes the\n camera added/removed events.\n- 7 new patches\n- API CHANGE: The eventfd is now always non-blocking. This causes an API\n change only if you relied on the blocking read.\n- API CHANGE: many of the methods exposed to Python no longer return an\n error code, but raise an exception on error.\n\nThe patches up to and including \"py: Switch to non-blocking eventfd\" can\nbe considered for merging.\n\nThe new event handling still needs more thought, I believe. I'm still\nnot sure if we should go with the dispatching method implemented now, or\ninstead returning a list of events which the user needs to process (a\nbit more like what we have now with the get_ready_requests). I'm also\nnot quite sure how to go with the camera.stop(), but there's an attempt\nto solve that in this series.\n\n Tomi\n\nTomi Valkeinen (14):\n py: cam.py: Fix multi camera capture without -C\n py: Add Python logging category\n py: Move ControlValue helpers to py_helpers.cpp\n py: cam.py: Remove todo comment\n py: Create PyCameraManager\n py: Use UniqueFD\n py: Set EFD_CLOEXEC on eventfd to avoid fd leaking\n py: Use libcamera's Mutex classes\n py: Use exceptions instead of returning error codes\n py: Switch to non-blocking eventfd\n py: New event handling\n py: cam.py: Use new events support\n py: Discard/Dispatch Request events on camera.stop()\n py: Add hotplug-monitor.py\n\n src/py/cam/cam.py | 57 +--\n src/py/examples/hotplug-monitor.py | 38 ++\n src/py/examples/simple-cam.py | 20 +-\n src/py/examples/simple-capture.py | 33 +-\n src/py/examples/simple-continuous-capture.py | 26 +-\n src/py/libcamera/meson.build | 2 +\n src/py/libcamera/py_camera_manager.cpp | 375 +++++++++++++++++++\n src/py/libcamera/py_camera_manager.h | 100 +++++\n src/py/libcamera/py_helpers.cpp | 97 +++++\n src/py/libcamera/py_helpers.h | 13 +\n src/py/libcamera/py_main.cpp | 347 ++++++++---------\n src/py/libcamera/py_main.h | 14 +\n test/py/unittests.py | 83 ++--\n 13 files changed, 904 insertions(+), 301 deletions(-)\n create mode 100644 src/py/examples/hotplug-monitor.py\n create mode 100644 src/py/libcamera/py_camera_manager.cpp\n create mode 100644 src/py/libcamera/py_camera_manager.h\n create mode 100644 src/py/libcamera/py_helpers.cpp\n create mode 100644 src/py/libcamera/py_helpers.h\n create mode 100644 src/py/libcamera/py_main.h" }