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{
    "id": 17461,
    "url": "https://patchwork.libcamera.org/api/patches/17461/?format=api",
    "web_url": "https://patchwork.libcamera.org/patch/17461/",
    "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": "<20220929091245.2159838-2-fsylvestre@baylibre.com>",
    "date": "2022-09-29T09:12:44",
    "name": "[libcamera-devel,v2,1/2] ipa: rkisp1: Compute LSC algorithm parameter during configure",
    "commit_ref": null,
    "pull_url": null,
    "state": "superseded",
    "archived": false,
    "hash": "025d01245cb1ba0e550b1f95197dbb766a513561",
    "submitter": {
        "id": 123,
        "url": "https://patchwork.libcamera.org/api/people/123/?format=api",
        "name": "Florian Sylvestre",
        "email": "fsylvestre@baylibre.com"
    },
    "delegate": null,
    "mbox": "https://patchwork.libcamera.org/patch/17461/mbox/",
    "series": [
        {
            "id": 3513,
            "url": "https://patchwork.libcamera.org/api/series/3513/?format=api",
            "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=3513",
            "date": "2022-09-29T09:12:43",
            "name": "Take into account color temperature during LSC algorithm for rkisp1",
            "version": 2,
            "mbox": "https://patchwork.libcamera.org/series/3513/mbox/"
        }
    ],
    "comments": "https://patchwork.libcamera.org/api/patches/17461/comments/",
    "check": "pending",
    "checks": "https://patchwork.libcamera.org/api/patches/17461/checks/",
    "tags": {},
    "headers": {
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        "To": "libcamera-devel@lists.libcamera.org",
        "Date": "Thu, 29 Sep 2022 11:12:44 +0200",
        "Message-Id": "<20220929091245.2159838-2-fsylvestre@baylibre.com>",
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        "Subject": "[libcamera-devel] [PATCH v2 1/2] ipa: rkisp1: Compute LSC algorithm\n\tparameter during configure",
        "X-BeenThere": "libcamera-devel@lists.libcamera.org",
        "X-Mailman-Version": "2.1.29",
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        "List-Id": "<libcamera-devel.lists.libcamera.org>",
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        "From": "Florian Sylvestre via libcamera-devel\n\t<libcamera-devel@lists.libcamera.org>",
        "Reply-To": "Florian Sylvestre <fsylvestre@baylibre.com>",
        "Errors-To": "libcamera-devel-bounces@lists.libcamera.org",
        "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>"
    },
    "content": "LSC gradient parameters where initially computed during prepare() phase.\nBecause these parameters can be computed only one time and stays constant for\neach frame after: move the computation to the configure() function.\n\nSigned-off-by: Florian Sylvestre <fsylvestre@baylibre.com>\n---\n src/ipa/rkisp1/algorithms/lsc.cpp | 66 ++++++++++++++++++-------------\n src/ipa/rkisp1/algorithms/lsc.h   |  4 ++\n 2 files changed, 42 insertions(+), 28 deletions(-)",
    "diff": "diff --git a/src/ipa/rkisp1/algorithms/lsc.cpp b/src/ipa/rkisp1/algorithms/lsc.cpp\nindex 44245caa..b1f39dfd 100644\n--- a/src/ipa/rkisp1/algorithms/lsc.cpp\n+++ b/src/ipa/rkisp1/algorithms/lsc.cpp\n@@ -125,30 +125,15 @@ int LensShadingCorrection::init([[maybe_unused]] IPAContext &context,\n int LensShadingCorrection::configure(IPAContext &context,\n \t\t\t\t     [[maybe_unused]] const IPACameraSensorInfo &configInfo)\n {\n-\tcontext.configuration.lsc.enabled = initialized_;\n-\treturn 0;\n-}\n-\n-/**\n- * \\copydoc libcamera::ipa::Algorithm::prepare\n- */\n-void LensShadingCorrection::prepare(IPAContext &context, const uint32_t frame,\n-\t\t\t\t    [[maybe_unused]] IPAFrameContext &frameContext,\n-\t\t\t\t    rkisp1_params_cfg *params)\n-{\n-\tif (frame > 0)\n-\t\treturn;\n-\n \tif (!initialized_)\n-\t\treturn;\n+\t\treturn EINVAL;\n \n-\tstruct rkisp1_cif_isp_lsc_config &config = params->others.lsc_config;\n \tconst Size &size = context.configuration.sensor.size;\n \tSize totalSize{};\n \n \tfor (unsigned int i = 0; i < RKISP1_CIF_ISP_LSC_SECTORS_TBL_SIZE; ++i) {\n-\t\tconfig.x_size_tbl[i] = xSize_[i] * size.width;\n-\t\tconfig.y_size_tbl[i] = ySize_[i] * size.height;\n+\t\txSizes_[i] = xSize_[i] * size.width;\n+\t\tySizes_[i] = ySize_[i] * size.height;\n \n \t\t/*\n \t\t * To prevent unexpected behavior of the ISP, the sum of x_size_tbl and\n@@ -157,25 +142,50 @@ void LensShadingCorrection::prepare(IPAContext &context, const uint32_t frame,\n \t\t * rounding-induced errors.\n \t\t */\n \t\tif (i == RKISP1_CIF_ISP_LSC_SECTORS_TBL_SIZE - 1) {\n-\t\t\tconfig.x_size_tbl[i] = size.width / 2 - totalSize.width;\n-\t\t\tconfig.y_size_tbl[i] = size.height / 2 - totalSize.height;\n+\t\t\txSizes_[i] = size.width / 2 - totalSize.width;\n+\t\t\tySizes_[i] = size.height / 2 - totalSize.height;\n \t\t}\n \n-\t\ttotalSize.width += config.x_size_tbl[i];\n-\t\ttotalSize.height += config.y_size_tbl[i];\n+\t\ttotalSize.width += xSizes_[i];\n+\t\ttotalSize.height += ySizes_[i];\n \n-\t\tconfig.x_grad_tbl[i] = std::round(32768 / config.x_size_tbl[i]);\n-\t\tconfig.y_grad_tbl[i] = std::round(32768 / config.y_size_tbl[i]);\n+\t\txGrad_[i] = std::round(32768 / xSizes_[i]);\n+\t\tyGrad_[i] = std::round(32768 / ySizes_[i]);\n \t}\n \n+\tcontext.configuration.lsc.enabled = true;\n+\treturn 0;\n+}\n+\n+/**\n+ * \\copydoc libcamera::ipa::Algorithm::prepare\n+ */\n+void LensShadingCorrection::prepare([[maybe_unused]] IPAContext &context,\n+\t\t\t\t    const uint32_t frame,\n+\t\t\t\t    [[maybe_unused]] IPAFrameContext &frameContext,\n+\t\t\t\t    rkisp1_params_cfg *params)\n+{\n+\tif (frame > 0)\n+\t\treturn;\n+\n+\tif (!initialized_)\n+\t\treturn;\n+\n+\tstruct rkisp1_cif_isp_lsc_config &config = params->others.lsc_config;\n+\n+\tmemcpy(config.x_grad_tbl, xGrad_, sizeof(config.x_grad_tbl));\n+\tmemcpy(config.y_grad_tbl, yGrad_, sizeof(config.y_grad_tbl));\n+\tmemcpy(config.x_size_tbl, xSizes_, sizeof(config.x_size_tbl));\n+\tmemcpy(config.y_size_tbl, ySizes_, sizeof(config.y_size_tbl));\n+\n \tstd::copy(rData_.begin(), rData_.end(),\n-\t\t  &params->others.lsc_config.r_data_tbl[0][0]);\n+\t\t  &config.r_data_tbl[0][0]);\n \tstd::copy(grData_.begin(), grData_.end(),\n-\t\t  &params->others.lsc_config.gr_data_tbl[0][0]);\n+\t\t  &config.gr_data_tbl[0][0]);\n \tstd::copy(gbData_.begin(), gbData_.end(),\n-\t\t  &params->others.lsc_config.gb_data_tbl[0][0]);\n+\t\t  &config.gb_data_tbl[0][0]);\n \tstd::copy(bData_.begin(), bData_.end(),\n-\t\t  &params->others.lsc_config.b_data_tbl[0][0]);\n+\t\t  &config.b_data_tbl[0][0]);\n \n \tparams->module_en_update |= RKISP1_CIF_ISP_MODULE_LSC;\n \tparams->module_ens |= RKISP1_CIF_ISP_MODULE_LSC;\ndiff --git a/src/ipa/rkisp1/algorithms/lsc.h b/src/ipa/rkisp1/algorithms/lsc.h\nindex da957d3e..b5cd5047 100644\n--- a/src/ipa/rkisp1/algorithms/lsc.h\n+++ b/src/ipa/rkisp1/algorithms/lsc.h\n@@ -35,6 +35,10 @@ private:\n \n \tstd::vector<double> xSize_;\n \tstd::vector<double> ySize_;\n+\tuint16_t xGrad_[RKISP1_CIF_ISP_LSC_SECTORS_TBL_SIZE];\n+\tuint16_t yGrad_[RKISP1_CIF_ISP_LSC_SECTORS_TBL_SIZE];\n+\tuint16_t xSizes_[RKISP1_CIF_ISP_LSC_SECTORS_TBL_SIZE];\n+\tuint16_t ySizes_[RKISP1_CIF_ISP_LSC_SECTORS_TBL_SIZE];\n };\n \n } /* namespace ipa::rkisp1::algorithms */\n",
    "prefixes": [
        "libcamera-devel",
        "v2",
        "1/2"
    ]
}