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{ "id": 20890, "url": "https://patchwork.libcamera.org/api/1.1/patches/20890/?format=api", "web_url": "https://patchwork.libcamera.org/patch/20890/", "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": "<20240812115009.946036-17-mzamazal@redhat.com>", "date": "2024-08-12T11:50:05", "name": "[16/16] libcamera: software_isp: Remove stats-sharing TODO item", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "af63376bf3fa2ffad39818605ae920749182b3ba", "submitter": { "id": 177, "url": "https://patchwork.libcamera.org/api/1.1/people/177/?format=api", "name": "Milan Zamazal", "email": "mzamazal@redhat.com" }, "delegate": null, "mbox": "https://patchwork.libcamera.org/patch/20890/mbox/", "series": [ { "id": 4511, "url": "https://patchwork.libcamera.org/api/1.1/series/4511/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=4511", "date": "2024-08-12T11:49:49", "name": "Software ISP: Share params and stats buffers", "version": 1, "mbox": "https://patchwork.libcamera.org/series/4511/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/patches/20890/comments/", "check": "pending", "checks": "https://patchwork.libcamera.org/api/patches/20890/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 7860FC323E\n\tfor <parsemail@patchwork.libcamera.org>;\n\tMon, 12 Aug 2024 11:50:57 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 177D2633CA;\n\tMon, 12 Aug 2024 13:50:57 +0200 (CEST)", "from us-smtp-delivery-124.mimecast.com\n\t(us-smtp-delivery-124.mimecast.com [170.10.129.124])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 903AA633DB\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tMon, 12 Aug 2024 13:50:47 +0200 (CEST)", "from mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com\n\t(ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63])\n\tby relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3,\n\tcipher=TLS_AES_256_GCM_SHA384) id us-mta-687-PM8kHWjdNMm_BWu7ukP3PQ-1;\n\tMon, 12 Aug 2024 07:50:45 -0400", "from mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com\n\t(mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com\n\t[10.30.177.15])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\tkey-exchange X25519 server-signature RSA-PSS (2048 bits)\n\tserver-digest SHA256) (No client certificate requested)\n\tby mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix)\n\twith ESMTPS\n\tid 434971954B16 for <libcamera-devel@lists.libcamera.org>;\n\tMon, 12 Aug 2024 11:50:44 +0000 (UTC)", "from nuthatch.redhat.com (unknown [10.45.225.57])\n\tby mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix)\n\twith ESMTP id 33E9219772C4; Mon, 12 Aug 2024 11:50:42 +0000 (UTC)" ], "Authentication-Results": "lancelot.ideasonboard.com; dkim=pass (1024-bit key;\n\tunprotected) header.d=redhat.com header.i=@redhat.com\n\theader.b=\"etuepSCM\"; dkim-atps=neutral", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com;\n\ts=mimecast20190719; t=1723463446;\n\th=from:from:reply-to:subject:subject:date:date:message-id:message-id:\n\tto:to:cc:cc:mime-version:mime-version:content-type:content-type:\n\tcontent-transfer-encoding:content-transfer-encoding:\n\tin-reply-to:in-reply-to:references:references;\n\tbh=YIGnnrU9sn832F49PZotPozmJP3zPpgRObwzrRoBQfE=;\n\tb=etuepSCMEryT09t/oDtNLX4sO8I+3d4y/bTvxgjqe8i0JMns4LwVbl268Z6kXRMx387TCP\n\tfaMiRoeBtdh+o7O0Z88Tj8OTM/SHL/ur753NybMr9NKO0YhCs7o1+/lOPqwb/p9tZ0OI+s\n\tjVnUT7pY1F+YB6g4XFGxZ7E1Uy+eR80=", "X-MC-Unique": "PM8kHWjdNMm_BWu7ukP3PQ-1", "From": "Milan Zamazal <mzamazal@redhat.com>", "To": "libcamera-devel@lists.libcamera.org", "Cc": "Milan Zamazal <mzamazal@redhat.com>", "Subject": "[PATCH 16/16] libcamera: software_isp: Remove stats-sharing TODO\n\titem", "Date": "Mon, 12 Aug 2024 13:50:05 +0200", "Message-ID": "<20240812115009.946036-17-mzamazal@redhat.com>", "In-Reply-To": "<20240812115009.946036-1-mzamazal@redhat.com>", "References": "<20240812115009.946036-1-mzamazal@redhat.com>", "MIME-Version": "1.0", "X-Scanned-By": "MIMEDefang 3.0 on 10.30.177.15", "X-Mimecast-Spam-Score": "0", "X-Mimecast-Originator": "redhat.com", "Content-Transfer-Encoding": "8bit", "Content-Type": "text/plain; charset=\"US-ASCII\"; x-default=true", "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>", "Errors-To": "libcamera-devel-bounces@lists.libcamera.org", "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>" }, "content": "Shared per-frame statistics buffers are implemented, we can remove\nTODO #2.\n\nSigned-off-by: Milan Zamazal <mzamazal@redhat.com>\n---\n src/libcamera/software_isp/TODO | 27 ---------------------------\n 1 file changed, 27 deletions(-)", "diff": "diff --git a/src/libcamera/software_isp/TODO b/src/libcamera/software_isp/TODO\nindex db1115dd..b83c3ba3 100644\n--- a/src/libcamera/software_isp/TODO\n+++ b/src/libcamera/software_isp/TODO\n@@ -1,30 +1,3 @@\n-2. Reconsider stats sharing\n-\n->>> +void SwStatsCpu::finishFrame(void)\n->>> +{\n->>> +\t*sharedStats_ = stats_;\n->> \n->> Is it more efficient to copy the stats instead of operating directly on\n->> the shared memory ?\n->\n-> I inherited doing things this way from Andrey. I kept this because\n-> we don't really have any synchronization with the IPA reading this.\n->\n-> So the idea is to only touch this when the next set of statistics\n-> is ready since we don't know when the IPA is done with accessing\n-> the previous set of statistics ...\n->\n-> This is both something which seems mostly a theoretic problem,\n-> yet also definitely something which I think we need to fix.\n->\n-> Maybe use a ringbuffer of stats buffers and pass the index into\n-> the ringbuffer to the emit signal ?\n-\n-That would match how we deal with hardware ISPs, and I think that's a\n-good idea. It will help decoupling the processing side from the IPA.\n-\n----\n-\n 3. Remove statsReady signal\n \n > class SwStatsCpu\n", "prefixes": [ "16/16" ] }