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{ "id": 18364, "url": "https://patchwork.libcamera.org/api/patches/18364/?format=api", "web_url": "https://patchwork.libcamera.org/patch/18364/", "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": "<20230309142601.70556-4-tomi.valkeinen@ideasonboard.com>", "date": "2023-03-09T14:25:49", "name": "[libcamera-devel,v4,03/15] py: cam.py: Use new events support", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": false, "hash": "4c7f227c98257ddd6a404f2ee683b2d601d0af05", "submitter": { "id": 109, "url": "https://patchwork.libcamera.org/api/people/109/?format=api", "name": "Tomi Valkeinen", "email": "tomi.valkeinen@ideasonboard.com" }, "delegate": null, "mbox": "https://patchwork.libcamera.org/patch/18364/mbox/", "series": [ { "id": 3796, "url": "https://patchwork.libcamera.org/api/series/3796/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=3796", "date": "2023-03-09T14:25:46", "name": "py: New python bindings event handling", "version": 4, "mbox": "https://patchwork.libcamera.org/series/3796/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/patches/18364/comments/", "check": "pending", "checks": "https://patchwork.libcamera.org/api/patches/18364/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 18952BDE17\n\tfor <parsemail@patchwork.libcamera.org>;\n\tThu, 9 Mar 2023 14:26:24 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 87F00626E1;\n\tThu, 9 Mar 2023 15:26:19 +0100 (CET)", "from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[213.167.242.64])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 756AA626D5\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tThu, 9 Mar 2023 15:26:17 +0100 (CET)", "from desky.lan (91-154-32-225.elisa-laajakaista.fi [91.154.32.225])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id F1EBF886;\n\tThu, 9 Mar 2023 15:26:16 +0100 (CET)" ], "DKIM-Signature": [ "v=1; 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dkim=pass (1024-bit key; \n\tunprotected) header.d=ideasonboard.com\n\theader.i=@ideasonboard.com\n\theader.b=\"ih7Me3KS\"; dkim-atps=neutral", "To": "libcamera-devel@lists.libcamera.org", "Date": "Thu, 9 Mar 2023 16:25:49 +0200", "Message-Id": "<20230309142601.70556-4-tomi.valkeinen@ideasonboard.com>", "X-Mailer": "git-send-email 2.34.1", "In-Reply-To": "<20230309142601.70556-1-tomi.valkeinen@ideasonboard.com>", "References": "<20230309142601.70556-1-tomi.valkeinen@ideasonboard.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Subject": "[libcamera-devel] [PATCH v4 03/15] py: cam.py: Use new events\n\tsupport", "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": "Convert cam.py to use the new event dispatching. In addition to handling\nthe request-completed event, handle also disconnect, camera-added and\ncamera-removed events (which only do a simple print).\n\nSigned-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>\nReviewed-by: Jacopo Mondi <jacopo@jmondi.org>\n---\n src/py/cam/cam.py | 28 ++++++++++++++++++++++------\n 1 file changed, 22 insertions(+), 6 deletions(-)", "diff": "diff --git a/src/py/cam/cam.py b/src/py/cam/cam.py\nindex a2a115c1..0b464256 100755\n--- a/src/py/cam/cam.py\n+++ b/src/py/cam/cam.py\n@@ -230,11 +230,20 @@ class CaptureState:\n # Called from renderer when there is a libcamera event\n def event_handler(self):\n try:\n- reqs = self.cm.get_ready_requests()\n-\n- for req in reqs:\n- ctx = next(ctx for ctx in self.contexts if ctx.idx == req.cookie)\n- self.__request_handler(ctx, req)\n+ evs = self.cm.get_events()\n+ for ev in evs:\n+ type = ev.type\n+\n+ if type == libcam.Event.Type.CameraAdded:\n+ print('Camera added:', ev.camera)\n+ elif type == libcam.Event.Type.CameraRemoved:\n+ print('Camera removed:', ev.camera)\n+ elif type == libcam.Event.Type.Disconnect:\n+ print(f'Camera {ev.camera} disconnected')\n+ elif type == libcam.Event.Type.RequestCompleted:\n+ self.__request_handler(ev.camera, ev.request)\n+ else:\n+ raise RuntimeError(\"Bad event type\")\n \n running = any(ctx.reqs_completed < ctx.opt_capture for ctx in self.contexts)\n return running\n@@ -242,7 +251,9 @@ class CaptureState:\n traceback.print_exc()\n return False\n \n- def __request_handler(self, ctx, req):\n+ def __request_handler(self, cam, req):\n+ ctx = next(ctx for ctx in self.contexts if ctx.camera == cam)\n+\n if req.status != libcam.Request.Status.Complete:\n raise Exception('{}: Request failed: {}'.format(ctx.id, req.status))\n \n@@ -447,6 +458,11 @@ def main():\n \n state.do_cmd_capture()\n \n+ # This is not strictly needed, but it helps to do a proper cleanup as we\n+ # drop any unhandled events, and so makes it easier to use memory leak\n+ # detectors.\n+ cm.get_events()\n+\n return 0\n \n \n", "prefixes": [ "libcamera-devel", "v4", "03/15" ] }