{"id":9272,"url":"https://patchwork.libcamera.org/api/1.1/covers/9272/?format=json","web_url":"https://patchwork.libcamera.org/cover/9272/","project":{"id":1,"url":"https://patchwork.libcamera.org/api/1.1/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":"<20200810120406.52654-1-email@uajain.com>","date":"2020-08-10T12:04:11","name":"[libcamera-devel,v2,0/4] android: Camera hotplug support","submitter":{"id":1,"url":"https://patchwork.libcamera.org/api/1.1/people/1/?format=json","name":"Umang Jain","email":"email@uajain.com"},"mbox":"https://patchwork.libcamera.org/cover/9272/mbox/","series":[{"id":1210,"url":"https://patchwork.libcamera.org/api/1.1/series/1210/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=1210","date":"2020-08-10T12:04:11","name":"android: Camera hotplug support","version":2,"mbox":"https://patchwork.libcamera.org/series/1210/mbox/"}],"comments":"https://patchwork.libcamera.org/api/covers/9272/comments/","headers":{"Return-Path":"","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 AAE18BD87D\n\tfor ;\n\tMon, 10 Aug 2020 12:04:15 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id ED33C60F27;\n\tMon, 10 Aug 2020 14:04:14 +0200 (CEST)","from o1.f.az.sendgrid.net (o1.f.az.sendgrid.net [208.117.55.132])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 6D41D60DCA\n\tfor ;\n\tMon, 10 Aug 2020 14:04:13 +0200 (CEST)","by filterdrecv-p3las1-canary-695b95b5f7-4z57j with SMTP id\n\tfilterdrecv-p3las1-canary-695b95b5f7-4z57j-19-5F3137BA-135\n\t2020-08-10 12:04:11.183701171 +0000 UTC m=+1019291.604134524","from mail.uajain.com (unknown)\n\tby ismtpd0003p1maa1.sendgrid.net (SG) with ESMTP id\n\t_VDpY-w6Rtm0o8nsvtV24A for ;\n\tMon, 10 Aug 2020 12:04:10.534 +0000 (UTC)"],"Authentication-Results":"lancelot.ideasonboard.com;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n\tunprotected) header.d=uajain.com header.i=@uajain.com\n\theader.b=\"hqx3bspg\"; dkim-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=2hvchwMYv1l9Tnnb8CFXGVZceApNWpcCPyHk1+5IK28=;\n\tb=hqx3bspgm0aiIG2s/9w9zKk/033nprjPKES9z9XDQF986OUjWUCOIyO/m7xzFrNOI/Bd\n\tpr+WoKIHJerHIU17jZJ9AUtGbWh6AMCTFoiYcePgwCQ4AFxmm8wXGe9anWa09Con0dYOJy\n\tg6A1cNpLCzoznatMaqk5Cv3Cv1BPOTXDM=","From":"Umang Jain ","Date":"Mon, 10 Aug 2020 12:04:11 +0000 (UTC)","Message-Id":"<20200810120406.52654-1-email@uajain.com>","Mime-Version":"1.0","X-SG-EID":"1Q40EQ7YGir8a9gjSIAdTjhngY657NMk9ckeo4dbHZDiOpywc/L3L9rFqlwE4KPc9vLW9W8H4bP+KZ0PPVtun1Yrxv2Kv21+EEtvbtDfRfZDoIPNJqqboTM5Fq7jYVpIhc3PQi1jD0z0V0ycnXWeXHv18gXA/zqWnFJURg2NvVyqX8PWFG0jHrEQIHRa5VBQMs7jjnwoE7PYcH/k5tXAROSRl9gYMvrmN4OVF5utgVP4euIiOQzR0O0ayfNWp/9ym8vimDTnHqZ8ZxZif3wgpFNsuCVFElsWCUdeg5/g57w=","To":"libcamera-devel@lists.libcamera.org","Subject":"[libcamera-devel] [PATCH v2 0/4] android: Camera hotplug support","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","Content-Type":"text/plain; charset=\"us-ascii\"","Content-Transfer-Encoding":"7bit","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "},"content":"Changes from v1:\n- Treat all UVC cameras as external - based off Laurent's suggestion.\n -It's difficult to know whether a UVC camera is external or internal.\n Hence, treat all UVC camereas as external by setting their\n CameraLocation property as CameraLocationExternal.\n- Use different IDs for internal and external cameras.\n -Internal camera IDs are meant to be started with 0 and\n external/removable ones from 1000. Also, support that\n if the camera has been seen in the past, reuse it's ID.\n- Few changes dealing with race conditions, locking and graceful\n handling of currently streaming camera.\n\nTested:\n- Camera hotplug and unplug by running cros_camera_service, their\n assigned IDs. Unfortunately I only have UVC cameras(#2) so the IDs\n always started with 1000 and so on.\n- Hotplug/Hot-unplug entry updated on chrome::media-internals in real\n time.\n\nUntested:\n- Hot-unplug of an currently open/streaming camera. The patch 4/4 deals\n with this is only a compile-test-only patch, not tested end-of-end.\n I am now looking into how to make libcamera streaming work with an\n UVC camera so that I can test this use case too with the internal\n CrOS camera application.\n \n\nUmang Jain (4):\n libcamera: pipeline: uvcvideo: Treat all UVC cameras as external\n android: camera_hal_manager: Set camera module callbacks\n android: camera_hal_manager: Support camera hotplug\n android: camera_hal_manager: Handle hot-unplug of currently open\n camera\n\n src/android/camera3_hal.cpp | 2 +\n src/android/camera_device.cpp | 15 ++\n src/android/camera_device.h | 9 +-\n src/android/camera_hal_manager.cpp | 174 ++++++++++++++++---\n src/android/camera_hal_manager.h | 20 ++-\n src/libcamera/pipeline/uvcvideo/uvcvideo.cpp | 4 +\n 6 files changed, 197 insertions(+), 27 deletions(-)"}