{"id":4030,"url":"https://patchwork.libcamera.org/api/patches/4030/?format=json","web_url":"https://patchwork.libcamera.org/patch/4030/","project":{"id":1,"url":"https://patchwork.libcamera.org/api/projects/1/?format=json","name":"libcamera","link_name":"libcamera","list_id":"libcamera_core","list_email":"libcamera-devel@lists.libcamera.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20200611171528.9381-7-email@uajain.com>","date":"2020-06-11T17:16:08","name":"[libcamera-devel,v4,6/6] tests: Introduce hotplug hot-unplug unit test","commit_ref":null,"pull_url":null,"state":"superseded","archived":false,"hash":"4456ec492d8cf4875ec64ff3db22753d7e815e9d","submitter":{"id":1,"url":"https://patchwork.libcamera.org/api/people/1/?format=json","name":"Umang Jain","email":"email@uajain.com"},"delegate":null,"mbox":"https://patchwork.libcamera.org/patch/4030/mbox/","series":[{"id":993,"url":"https://patchwork.libcamera.org/api/series/993/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=993","date":"2020-06-11T17:16:02","name":"Introduce UVC hotplugging support","version":4,"mbox":"https://patchwork.libcamera.org/series/993/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/4030/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/4030/checks/","tags":{},"headers":{"Return-Path":"","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 51BAC61167\n\tfor ;\n\tThu, 11 Jun 2020 19:16:09 +0200 (CEST)","by filterdrecv-p3iad2-784dbb6bd8-hcng7 with SMTP id\n\tfilterdrecv-p3iad2-784dbb6bd8-hcng7-18-5EE266D7-DD\n\t2020-06-11 17:16:08.22047431 +0000 UTC m=+680961.308968930","from mail.uajain.com (unknown)\n\tby ismtpd0008p1maa1.sendgrid.net (SG) with ESMTP\n\tid Pfb7fKVHRxi6I5sRD3YkMQ Thu, 11 Jun 2020 17:16:07.475 +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=\"MLvjpl9k\"; \n\tdkim-atps=neutral","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed; d=uajain.com;\n\th=from:subject:in-reply-to:references:mime-version:to:cc:\n\tcontent-transfer-encoding:content-type;\n\ts=s1; bh=BemP8mCiSuDiWTKrP7yL6afMkUnpjFUGlYIFEVEdddU=;\n\tb=MLvjpl9kjlza2Iy4nM/mQQ483uKT6+qClWBfu+oVNc50PH3WB9zKTVTnAucw5Xr9NBDL\n\tD6tqouVnW5bQATFqowVniHR6nCEytdnX3lmj79v/px3JVVBmpMma9efJr6i3YN8rVA5thl\n\tZqb3tLiVTmUgVcSuuoZconf7Wkw8YVWwk=","From":"Umang Jain ","Date":"Thu, 11 Jun 2020 17:16:08 +0000 (UTC)","Message-Id":"<20200611171528.9381-7-email@uajain.com>","In-Reply-To":"<20200611171528.9381-1-email@uajain.com>","References":"<20200611171528.9381-1-email@uajain.com>","Mime-Version":"1.0","X-SG-EID":"1Q40EQ7YGir8a9gjSIAdTjhngY657NMk9ckeo4dbHZDiOpywc/L3L9rFqlwE4KPcYDswUgqLHty1lirORaEntR95UyLLITGvBSHaUC4UjCvx2dCMfy3hTqgrHZ5ipiSUrCjpIrCCy7Qh//02WzlWEIfZvUgptFn09BhgLNaxQw8M8wHM6Zp0mHT8kaWM5v4ceJLBZ4db5ezZkpdmTwO67bGgf7EsIAJ9theFlLxjT8ZwRScRPCXYC2IVBPZPL4CF0yO7OkTG0mj+2f+XG5on3A==","To":"laurent.pinchart@ideasonboard.com, libcamera-devel@lists.libcamera.org","Content-Transfer-Encoding":"7bit","Content-Type":"text/plain; charset=us-ascii","Subject":"[libcamera-devel] [PATCH v4 6/6] tests: Introduce hotplug\n\thot-unplug unit test","X-BeenThere":"libcamera-devel@lists.libcamera.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","X-List-Received-Date":"Thu, 11 Jun 2020 17:16:09 -0000"},"content":"This test checks the code-paths for camera's hotplugged and\nunplugged support. It is based on bind/unbind of a UVC device\nfrom sysfs. Hence, this test requires root permissions to run\nand should have at least one already bound UVC device present\nin the system.\n\nSigned-off-by: Umang Jain \n---\n test/hotplug-cameras.cpp | 124 +++++++++++++++++++++++++++++++++++++++\n test/meson.build | 1 +\n 2 files changed, 125 insertions(+)\n create mode 100644 test/hotplug-cameras.cpp","diff":"diff --git a/test/hotplug-cameras.cpp b/test/hotplug-cameras.cpp\nnew file mode 100644\nindex 0000000..07500fc\n--- /dev/null\n+++ b/test/hotplug-cameras.cpp\n@@ -0,0 +1,124 @@\n+/* SPDX-License-Identifier: GPL-2.0-or-later */\n+/*\n+ * Copyright (C) 2020, Umang Jain \n+ *\n+ * hotplug-cameras.cpp - Test cameraAdded/cameraRemoved signals in CameraManager\n+ */\n+\n+#include \n+#include \n+#include \n+#include \n+#include \n+\n+#include \n+#include \n+#include \n+#include \n+\n+#include \"libcamera/internal/file.h\"\n+#include \"libcamera/internal/thread.h\"\n+\n+#include \"test.h\"\n+\n+using namespace libcamera;\n+\n+class HotplugTest : public Test\n+{\n+protected:\n+\tvoid cameraAddedHandler(std::shared_ptr cam)\n+\t{\n+\t\tcameraAdded_ = true;\n+\t}\n+\n+\tvoid cameraRemovedHandler(std::shared_ptr cam)\n+\t{\n+\t\tcameraRemoved_ = true;\n+\t}\n+\n+\tint init()\n+\t{\n+\t\tif (!File::exists(\"/sys/module/uvcvideo\")) {\n+\t\t\tstd::cout << \"uvcvideo driver is not loaded, skipping\" << std::endl;\n+\t\t\treturn TestSkip;\n+\t\t}\n+\n+\t\tif (geteuid() != 0) {\n+\t\t\tstd::cout << \"This test requires root permissions, skipping\" << std::endl;\n+\t\t\treturn TestSkip;\n+\t\t}\n+\n+\t\tcm_ = new CameraManager();\n+\t\tif (cm_->start()) {\n+\t\t\tstd::cout << \"Failed to start camera manager\" << std::endl;\n+\t\t\treturn TestFail;\n+\t\t}\n+\n+\t\tcameraAdded_ = false;\n+\t\tcameraRemoved_ = false;\n+\n+\t\tcm_->cameraAdded.connect(this, &HotplugTest::cameraAddedHandler);\n+\t\tcm_->cameraRemoved.connect(this, &HotplugTest::cameraRemovedHandler);\n+\n+\t\treturn 0;\n+\t}\n+\n+\tint run()\n+\t{\n+\t\tDIR *dir;\n+\t\tstruct dirent *dirent;\n+\t\tstd::string uvcDeviceDir;\n+\n+\t\tdir = opendir(uvcDriverDir_.c_str());\n+\t\t/* Find a UVC device directory, which we can bind/unbind. */\n+\t\twhile ((dirent = readdir(dir)) != nullptr) {\n+\t\t\tif (!File::exists(uvcDriverDir_ + dirent->d_name + \"/video4linux\"))\n+\t\t\t\tcontinue;\n+\n+\t\t\tuvcDeviceDir = dirent->d_name;\n+\t\t\tbreak;\n+\t\t}\n+\t\tclosedir(dir);\n+\n+\t\t/* If no UVC device found, skip the test. */\n+\t\tif (uvcDeviceDir.empty())\n+\t\t\treturn TestSkip;\n+\n+\t\t/* Unbind a camera and process events. */\n+\t\tstd::ofstream(uvcDriverDir_ + \"unbind\", std::ios::binary)\n+\t\t\t<< uvcDeviceDir;\n+\t\tTimer timer;\n+\t\ttimer.start(1000);\n+\t\twhile (timer.isRunning() && !cameraRemoved_)\n+\t\t\tThread::current()->eventDispatcher()->processEvents();\n+\t\tif (!cameraRemoved_)\n+\t\t\treturn TestFail;\n+\n+\t\t/* Bind the camera again and process events. */\n+\t\tstd::ofstream(uvcDriverDir_ + \"bind\", std::ios::binary)\n+\t\t\t<< uvcDeviceDir;\n+\t\ttimer.start(1000);\n+\t\twhile (timer.isRunning() && !cameraAdded_)\n+\t\t\tThread::current()->eventDispatcher()->processEvents();\n+\t\tif (!cameraAdded_)\n+\t\t\treturn TestFail;\n+\n+\t\treturn TestPass;\n+\t}\n+\n+\tvoid cleanup()\n+\t{\n+\t\tcm_->stop();\n+\t\tdelete cm_;\n+\t}\n+\n+private:\n+\tCameraManager *cm_;\n+\tstatic const std::string uvcDriverDir_;\n+\tbool cameraRemoved_;\n+\tbool cameraAdded_;\n+};\n+\n+const std::string HotplugTest::uvcDriverDir_ = \"/sys/bus/usb/drivers/uvcvideo/\";\n+\n+TEST_REGISTER(HotplugTest)\ndiff --git a/test/meson.build b/test/meson.build\nindex bd7da14..a868813 100644\n--- a/test/meson.build\n+++ b/test/meson.build\n@@ -30,6 +30,7 @@ internal_tests = [\n ['event-thread', 'event-thread.cpp'],\n ['file', 'file.cpp'],\n ['file-descriptor', 'file-descriptor.cpp'],\n+ ['hotplug-cameras', 'hotplug-cameras.cpp'],\n ['message', 'message.cpp'],\n ['object', 'object.cpp'],\n ['object-invoke', 'object-invoke.cpp'],\n","prefixes":["libcamera-devel","v4","6/6"]}