{"id":15483,"url":"https://patchwork.libcamera.org/api/covers/15483/?format=json","web_url":"https://patchwork.libcamera.org/cover/15483/","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":"<20220321102702.1753800-1-naush@raspberrypi.com>","date":"2022-03-21T10:26:57","name":"[libcamera-devel,v3,0/5] Raspberry Pi: Efficient start/stop/start sequences","submitter":{"id":34,"url":"https://patchwork.libcamera.org/api/people/34/?format=json","name":"Naushir Patuck","email":"naush@raspberrypi.com"},"mbox":"https://patchwork.libcamera.org/cover/15483/mbox/","series":[{"id":2977,"url":"https://patchwork.libcamera.org/api/series/2977/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=2977","date":"2022-03-21T10:26:57","name":"Raspberry Pi: Efficient start/stop/start sequences","version":3,"mbox":"https://patchwork.libcamera.org/series/2977/mbox/"}],"comments":"https://patchwork.libcamera.org/api/covers/15483/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 AD386BD80A\n\tfor ;\n\tMon, 21 Mar 2022 10:27:07 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id B83DC604C4;\n\tMon, 21 Mar 2022 11:27:06 +0100 (CET)","from mail-wm1-x32f.google.com (mail-wm1-x32f.google.com\n\t[IPv6:2a00:1450:4864:20::32f])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id AF695604C4\n\tfor ;\n\tMon, 21 Mar 2022 11:27:05 +0100 (CET)","by mail-wm1-x32f.google.com with SMTP id\n\to7-20020a05600c4fc700b0038c87edc21eso2739178wmq.0\n\tfor ;\n\tMon, 21 Mar 2022 03:27:05 -0700 (PDT)","from naush-laptop.pitowers.org\n\t([2a00:1098:3142:14:77bd:7c6c:a8b9:8855])\n\tby smtp.gmail.com with ESMTPSA id\n\tv10-20020a056000144a00b00203df06cf9bsm13530115wrx.106.2022.03.21.03.27.04\n\t(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n\tMon, 21 Mar 2022 03:27:04 -0700 (PDT)"],"DKIM-Signature":["v=1; 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\n\tMon, 21 Mar 2022 03:27:04 -0700 (PDT)","To":"libcamera-devel@lists.libcamera.org","Date":"Mon, 21 Mar 2022 10:26:57 +0000","Message-Id":"<20220321102702.1753800-1-naush@raspberrypi.com>","X-Mailer":"git-send-email 2.25.1","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","Subject":"[libcamera-devel] [PATCH v3 0/5] Raspberry Pi: Efficient\n\tstart/stop/start sequences","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","From":"Naushir Patuck via libcamera-devel\n\t","Reply-To":"Naushir Patuck ","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "},"content":"Hi,\n\nFor version 3 of this series, I've removed the patch to add a timer that waits\nfor 5s after stop() to de-allocate buffers. David and me have had a chat about\nthis and we think for now it is best that we have fully deterministic behavior for\nbuffer allocations, and avoid CMA fragmentation on the Raspberry Pi platforms.\nApart from that, I have renamed the reallocate flag based on Kieran's suggestion.\n\nRegards,\nNaush\n\nNaushir Patuck (5):\n pipeline: raspberrypi: Avoid over-allocation for ISP Output 1\n pipeline: raspberrypi: Move freeBuffers() to the RPiCameraData class\n pipeline: raspberrypi: Free buffers in the RPiCamera destructor and\n re-configure\n pipeline: raspberrypi: Repurpose RPi::Stream::reset()\n libcamera: v4l2_videodevice: Empty the V4L2 buffer cache on\n streamOff()\n\n include/libcamera/internal/v4l2_videodevice.h | 1 +\n .../pipeline/raspberrypi/raspberrypi.cpp | 58 ++++++++++++-------\n .../pipeline/raspberrypi/rpi_stream.cpp | 13 ++---\n .../pipeline/raspberrypi/rpi_stream.h | 2 +-\n src/libcamera/v4l2_videodevice.cpp | 16 +++++\n 5 files changed, 61 insertions(+), 29 deletions(-)"}