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{ "id": 24457, "url": "https://patchwork.libcamera.org/api/patches/24457/?format=api", "web_url": "https://patchwork.libcamera.org/patch/24457/", "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": "<20250925192856.77881-4-mzamazal@redhat.com>", "date": "2025-09-25T19:28:52", "name": "[v4,3/7] libcamera: software_isp: Pass correct y-coordinate to stats", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": false, "hash": "94ac82cb4a06472adc5772d50c69f384c8b3e6db", "submitter": { "id": 177, "url": "https://patchwork.libcamera.org/api/people/177/?format=api", "name": "Milan Zamazal", "email": "mzamazal@redhat.com" }, "delegate": null, "mbox": "https://patchwork.libcamera.org/patch/24457/mbox/", "series": [ { "id": 5458, "url": "https://patchwork.libcamera.org/api/series/5458/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=5458", "date": "2025-09-25T19:28:49", "name": "Fix stats related problems in software ISP", "version": 4, "mbox": "https://patchwork.libcamera.org/series/5458/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/patches/24457/comments/", "check": "pending", "checks": "https://patchwork.libcamera.org/api/patches/24457/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 24A9DBDB1C\n\tfor <parsemail@patchwork.libcamera.org>;\n\tThu, 25 Sep 2025 19:29:22 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id D0C1A6B60E;\n\tThu, 25 Sep 2025 21:29:20 +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 38FE569318\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tThu, 25 Sep 2025 21:29:16 +0200 (CEST)", "from mx-prod-mc-02.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-629-DB1HusEEMrKOOZmbfJ-x_A-1;\n\tThu, 25 Sep 2025 15:29:11 -0400", "from mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com\n\t(mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com\n\t[10.30.177.17])\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-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix)\n\twith ESMTPS id 4FC861956096; Thu, 25 Sep 2025 19:29:10 +0000 (UTC)", "from mzamazal-thinkpadp1gen7.tpbc.com (unknown [10.44.32.62])\n\tby mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix)\n\twith ESMTP id 320A71956095; Thu, 25 Sep 2025 19:29:07 +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=\"CtARagey\"; dkim-atps=neutral", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com;\n\ts=mimecast20190719; t=1758828554;\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=PtaZlGq26lh1o6lLWlr+mPPbwqfBa5VPofvYiEmcXMk=;\n\tb=CtARageyb6KYxVaNVdWFtv7M4mLFID0gkFOyJqMlIHtnNHes7dI1XpyRul0EYGKM7vzQEG\n\tXw0BTWCENDugsWJfZLtdmawAQbrIxluvuNalpbo0arzmzef0bguFkHVnitwHHI2Ns0y68o\n\toy+J9mf3DqRecUXDTveSbe6PSHa4rK8=", "X-MC-Unique": "DB1HusEEMrKOOZmbfJ-x_A-1", "X-Mimecast-MFC-AGG-ID": "DB1HusEEMrKOOZmbfJ-x_A_1758828550", "From": "Milan Zamazal <mzamazal@redhat.com>", "To": "libcamera-devel@lists.libcamera.org", "Cc": "Milan Zamazal <mzamazal@redhat.com>, pobrn@protonmail.com,\n\tmail@maciej.szmigiero.name", "Subject": "[PATCH v4 3/7] libcamera: software_isp: Pass correct y-coordinate to\n\tstats", "Date": "Thu, 25 Sep 2025 21:28:52 +0200", "Message-ID": "<20250925192856.77881-4-mzamazal@redhat.com>", "In-Reply-To": "<20250925192856.77881-1-mzamazal@redhat.com>", "References": "<20250925192856.77881-1-mzamazal@redhat.com>", "MIME-Version": "1.0", "X-Scanned-By": "MIMEDefang 3.0 on 10.30.177.17", "X-Mimecast-Spam-Score": "0", "X-Mimecast-MFC-PROC-ID": "N2p8er34GQQ1qsX4vL-io8qY4b5-6LkI7amDmWR0ZOc_1758828550", "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": "The window set by SwStatsCpu::setWindow is relative to the processed\nimage area. But debayering passes the processed line y-coordinate to\nthe stats relative to the whole image area. This can result in\ngathering stats from a wrong image area or in not gathering stats at\nall.\n\nLet's pass the correct y-coordinate to the stats processing methods.\n\nBug: https://bugs.libcamera.org/show_bug.cgi?id=280\nSigned-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name>\nSigned-off-by: Milan Zamazal <mzamazal@redhat.com>\n---\n src/libcamera/software_isp/debayer_cpu.cpp | 10 +++++-----\n 1 file changed, 5 insertions(+), 5 deletions(-)", "diff": "diff --git a/src/libcamera/software_isp/debayer_cpu.cpp b/src/libcamera/software_isp/debayer_cpu.cpp\nindex bcaaa5dee..5f3f22f07 100644\n--- a/src/libcamera/software_isp/debayer_cpu.cpp\n+++ b/src/libcamera/software_isp/debayer_cpu.cpp\n@@ -661,7 +661,7 @@ void DebayerCpu::memcpyNextLine(const uint8_t *linePointers[])\n \n void DebayerCpu::process2(const uint8_t *src, uint8_t *dst)\n {\n-\tunsigned int yEnd = window_.y + window_.height;\n+\tunsigned int yEnd = window_.height;\n \t/* Holds [0] previous- [1] current- [2] next-line */\n \tconst uint8_t *linePointers[3];\n \n@@ -677,12 +677,12 @@ void DebayerCpu::process2(const uint8_t *src, uint8_t *dst)\n \t\tlinePointers[1] = src + inputConfig_.stride;\n \t\tlinePointers[2] = src;\n \t\t/* Last 2 lines also need special handling */\n-\t\tyEnd -= 2;\n+\t\tyEnd = (yEnd > 2 ? yEnd - 2 : 0);\n \t}\n \n \tsetupInputMemcpy(linePointers);\n \n-\tfor (unsigned int y = window_.y; y < yEnd; y += 2) {\n+\tfor (unsigned int y = 0; y < yEnd; y += 2) {\n \t\tshiftLinePointers(linePointers, src);\n \t\tmemcpyNextLine(linePointers);\n \t\tstats_->processLine0(y, linePointers);\n@@ -716,7 +716,7 @@ void DebayerCpu::process2(const uint8_t *src, uint8_t *dst)\n \n void DebayerCpu::process4(const uint8_t *src, uint8_t *dst)\n {\n-\tconst unsigned int yEnd = window_.y + window_.height;\n+\tconst unsigned int yEnd = window_.height;\n \t/*\n \t * This holds pointers to [0] 2-lines-up [1] 1-line-up [2] current-line\n \t * [3] 1-line-down [4] 2-lines-down.\n@@ -734,7 +734,7 @@ void DebayerCpu::process4(const uint8_t *src, uint8_t *dst)\n \n \tsetupInputMemcpy(linePointers);\n \n-\tfor (unsigned int y = window_.y; y < yEnd; y += 4) {\n+\tfor (unsigned int y = 0; y < yEnd; y += 4) {\n \t\tshiftLinePointers(linePointers, src);\n \t\tmemcpyNextLine(linePointers);\n \t\tstats_->processLine0(y, linePointers);\n", "prefixes": [ "v4", "3/7" ] }