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{
    "id": 23061,
    "url": "https://patchwork.libcamera.org/api/patches/23061/?format=api",
    "web_url": "https://patchwork.libcamera.org/patch/23061/",
    "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": "<20250327185945.159481-4-mzamazal@redhat.com>",
    "date": "2025-03-27T18:59:41",
    "name": "[v6,3/6] ipa: simple: Report the ColourGains in metadata",
    "commit_ref": null,
    "pull_url": null,
    "state": "accepted",
    "archived": false,
    "hash": "708b11b063ab6a8efdb43378fa1b2d4832194032",
    "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/23061/mbox/",
    "series": [
        {
            "id": 5087,
            "url": "https://patchwork.libcamera.org/api/series/5087/?format=api",
            "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=5087",
            "date": "2025-03-27T18:59:38",
            "name": "ipa: simple: Introduce metadata reporting",
            "version": 6,
            "mbox": "https://patchwork.libcamera.org/series/5087/mbox/"
        }
    ],
    "comments": "https://patchwork.libcamera.org/api/patches/23061/comments/",
    "check": "pending",
    "checks": "https://patchwork.libcamera.org/api/patches/23061/checks/",
    "tags": {},
    "headers": {
        "Return-Path": "<libcamera-devel-bounces@lists.libcamera.org>",
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        "X-Mimecast-MFC-AGG-ID": "pWnb6hbkMDeNxZE_JWiZ5Q_1743102001",
        "From": "Milan Zamazal <mzamazal@redhat.com>",
        "To": "libcamera-devel@lists.libcamera.org",
        "Cc": "Kieran Bingham <kieran.bingham@ideasonboard.com>,\n\tLaurent Pinchart <laurent.pinchart@ideasonboard.com>,\n\tMilan Zamazal <mzamazal@redhat.com>",
        "Subject": "[PATCH v6 3/6] ipa: simple: Report the ColourGains in metadata",
        "Date": "Thu, 27 Mar 2025 19:59:41 +0100",
        "Message-ID": "<20250327185945.159481-4-mzamazal@redhat.com>",
        "In-Reply-To": "<20250327185945.159481-1-mzamazal@redhat.com>",
        "References": "<20250327185945.159481-1-mzamazal@redhat.com>",
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        "Errors-To": "libcamera-devel-bounces@lists.libcamera.org",
        "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>"
    },
    "content": "From: Kieran Bingham <kieran.bingham@ideasonboard.com>\n\nProvide the determined colour gains back into the metadata\nto add to completed requests.\n\nReviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>\nReviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>\nSigned-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>\nSigned-off-by: Milan Zamazal <mzamazal@redhat.com>\n---\n src/ipa/simple/algorithms/awb.cpp | 21 ++++++++++++++++++++-\n src/ipa/simple/algorithms/awb.h   |  6 +++++-\n src/ipa/simple/ipa_context.h      |  4 ++++\n 3 files changed, 29 insertions(+), 2 deletions(-)",
    "diff": "diff --git a/src/ipa/simple/algorithms/awb.cpp b/src/ipa/simple/algorithms/awb.cpp\nindex ec77c6e5..55719059 100644\n--- a/src/ipa/simple/algorithms/awb.cpp\n+++ b/src/ipa/simple/algorithms/awb.cpp\n@@ -17,6 +17,8 @@\n #include \"libipa/colours.h\"\n #include \"simple/ipa_context.h\"\n \n+#include \"control_ids.h\"\n+\n namespace libcamera {\n \n LOG_DEFINE_CATEGORY(IPASoftAwb)\n@@ -32,15 +34,32 @@ int Awb::configure(IPAContext &context,\n \treturn 0;\n }\n \n+void Awb::prepare(IPAContext &context,\n+\t\t  [[maybe_unused]] const uint32_t frame,\n+\t\t  IPAFrameContext &frameContext,\n+\t\t  [[maybe_unused]] DebayerParams *params)\n+{\n+\tauto &gains = context.activeState.awb.gains;\n+\tframeContext.gains.red = gains.r();\n+\tframeContext.gains.blue = gains.b();\n+}\n+\n void Awb::process(IPAContext &context,\n \t\t  [[maybe_unused]] const uint32_t frame,\n-\t\t  [[maybe_unused]] IPAFrameContext &frameContext,\n+\t\t  IPAFrameContext &frameContext,\n \t\t  const SwIspStats *stats,\n \t\t  ControlList &metadata)\n {\n \tconst SwIspStats::Histogram &histogram = stats->yHistogram;\n \tconst uint8_t blackLevel = context.activeState.blc.level;\n \n+\tconst float maxGain = 1024.0;\n+\tconst float mdGains[] = {\n+\t\tstatic_cast<float>(frameContext.gains.red / maxGain),\n+\t\tstatic_cast<float>(frameContext.gains.blue / maxGain)\n+\t};\n+\tmetadata.set(controls::ColourGains, mdGains);\n+\n \t/*\n \t * Black level must be subtracted to get the correct AWB ratios, they\n \t * would be off if they were computed from the whole brightness range\ndiff --git a/src/ipa/simple/algorithms/awb.h b/src/ipa/simple/algorithms/awb.h\nindex db1496cd..ad993f39 100644\n--- a/src/ipa/simple/algorithms/awb.h\n+++ b/src/ipa/simple/algorithms/awb.h\n@@ -1,6 +1,6 @@\n /* SPDX-License-Identifier: LGPL-2.1-or-later */\n /*\n- * Copyright (C) 2024, Red Hat Inc.\n+ * Copyright (C) 2024-2025 Red Hat Inc.\n  *\n  * Auto white balance\n  */\n@@ -20,6 +20,10 @@ public:\n \t~Awb() = default;\n \n \tint configure(IPAContext &context, const IPAConfigInfo &configInfo) override;\n+\tvoid prepare(IPAContext &context,\n+\t\t     const uint32_t frame,\n+\t\t     IPAFrameContext &frameContext,\n+\t\t     DebayerParams *params) override;\n \tvoid process(IPAContext &context,\n \t\t     const uint32_t frame,\n \t\t     IPAFrameContext &frameContext,\ndiff --git a/src/ipa/simple/ipa_context.h b/src/ipa/simple/ipa_context.h\nindex 17bcd4ca..bfac835b 100644\n--- a/src/ipa/simple/ipa_context.h\n+++ b/src/ipa/simple/ipa_context.h\n@@ -70,6 +70,10 @@ struct IPAFrameContext : public FrameContext {\n \t\tint32_t exposure;\n \t\tdouble gain;\n \t} sensor;\n+\tstruct {\n+\t\tdouble red;\n+\t\tdouble blue;\n+\t} gains;\n };\n \n struct IPAContext {\n",
    "prefixes": [
        "v6",
        "3/6"
    ]
}