{"id":19790,"url":"https://patchwork.libcamera.org/api/patches/19790/?format=json","web_url":"https://patchwork.libcamera.org/patch/19790/","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":"<20240322131451.3092931-6-dan.scally@ideasonboard.com>","date":"2024-03-22T13:14:46","name":"[05/10] ipa: ipu3: Parse and store Agc stats","commit_ref":null,"pull_url":null,"state":"superseded","archived":false,"hash":"5998d1acdc4ed7edbcb81baedba8875bdaee39cd","submitter":{"id":156,"url":"https://patchwork.libcamera.org/api/people/156/?format=json","name":"Dan Scally","email":"dan.scally@ideasonboard.com"},"delegate":null,"mbox":"https://patchwork.libcamera.org/patch/19790/mbox/","series":[{"id":4236,"url":"https://patchwork.libcamera.org/api/series/4236/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=4236","date":"2024-03-22T13:14:41","name":"Centralise Agc into libipa","version":1,"mbox":"https://patchwork.libcamera.org/series/4236/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/19790/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/19790/checks/","tags":{},"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 AD52EC32C3\n\tfor ;\n\tFri, 22 Mar 2024 13:15:19 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 5497F63354;\n\tFri, 22 Mar 2024 14:15:16 +0100 (CET)","from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[IPv6:2001:4b98:dc2:55:216:3eff:fef7:d647])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 82BA3632E7\n\tfor ;\n\tFri, 22 Mar 2024 14:15:09 +0100 (CET)","from mail.ideasonboard.com\n\t(cpc141996-chfd3-2-0-cust928.12-3.cable.virginm.net [86.13.91.161])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id 86991D50;\n\tFri, 22 Mar 2024 14:14:40 +0100 (CET)"],"Authentication-Results":"lancelot.ideasonboard.com; dkim=pass (1024-bit key;\n\tunprotected) header.d=ideasonboard.com header.i=@ideasonboard.com\n\theader.b=\"jMwdG0Qe\"; dkim-atps=neutral","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1711113280;\n\tbh=eBnNF8fPnn3dj5kMYozHbwOefdh6RqSKyouYwf3Qs1Y=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=jMwdG0QeI/ox7dlXz7Hwv3ax6NQpDvaP4ESeJR5/n39/V+7uIlXpyWc7loyWn4zd+\n\ti00Sre5/2rNWbhhnmg1qAhQwitdYbKy6xdViXdbS9urfguiCNWlSuYdw4I2k4p3AYk\n\tyRVHGtbKnRVMJwe2dJQ3L/sDaD3jlTgggLXFUHtA=","From":"Daniel Scally ","To":"libcamera-devel@lists.libcamera.org","Cc":"Daniel Scally ","Subject":"[PATCH 05/10] ipa: ipu3: Parse and store Agc stats","Date":"Fri, 22 Mar 2024 13:14:46 +0000","Message-Id":"<20240322131451.3092931-6-dan.scally@ideasonboard.com>","X-Mailer":"git-send-email 2.34.1","In-Reply-To":"<20240322131451.3092931-1-dan.scally@ideasonboard.com>","References":"<20240322131451.3092931-1-dan.scally@ideasonboard.com>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","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","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "},"content":"In preparation for switching to a derivation of MeanLuminanceAgc, add\na function to parse and store the statistics for easy retrieval in an\noverriding estimateLuminance() function.\n\nSigned-off-by: Daniel Scally \n---\n src/ipa/ipu3/algorithms/agc.cpp | 33 +++++++++++++++++++++++++++++++++\n src/ipa/ipu3/algorithms/agc.h | 8 ++++++++\n 2 files changed, 41 insertions(+)","diff":"diff --git a/src/ipa/ipu3/algorithms/agc.cpp b/src/ipa/ipu3/algorithms/agc.cpp\nindex 606a237a..ee9a42cf 100644\n--- a/src/ipa/ipu3/algorithms/agc.cpp\n+++ b/src/ipa/ipu3/algorithms/agc.cpp\n@@ -142,6 +142,39 @@ double Agc::measureBrightness(const ipu3_uapi_stats_3a *stats,\n \treturn Histogram(Span(hist)).interQuantileMean(0.98, 1.0);\n }\n \n+void Agc::parseStatistics(const ipu3_uapi_stats_3a *stats,\n+\t\t\t const ipu3_uapi_grid_config &grid)\n+{\n+\tuint32_t hist[knumHistogramBins] = { 0 };\n+\n+\treds_.clear();\n+\tgreens_.clear();\n+\tblues_.clear();\n+\n+\tfor (unsigned int cellY = 0; cellY < grid.height; cellY++) {\n+\t\tfor (unsigned int cellX = 0; cellX < grid.width; cellX++) {\n+\t\t\tuint32_t cellPosition = cellY * stride_ + cellX;\n+\n+\t\t\tconst ipu3_uapi_awb_set_item *cell =\n+\t\t\t\treinterpret_cast(\n+\t\t\t\t\t&stats->awb_raw_buffer.meta_data[cellPosition]);\n+\n+\t\t\treds_.push_back(cell->R_avg);\n+\t\t\tgreens_.push_back((cell->Gr_avg + cell->Gb_avg) / 2);\n+\t\t\tblues_.push_back(cell->B_avg);\n+\n+\t\t\t/*\n+\t\t\t * Store the average green value to estimate the\n+\t\t\t * brightness. Even the overexposed pixels are\n+\t\t\t * taken into account.\n+\t\t\t */\n+\t\t\thist[(cell->Gr_avg + cell->Gb_avg) / 2]++;\n+\t\t}\n+\t}\n+\n+\thist_ = Histogram(Span(hist));\n+}\n+\n /**\n * \\brief Apply a filter on the exposure value to limit the speed of changes\n * \\param[in] exposureValue The target exposure from the AGC algorithm\ndiff --git a/src/ipa/ipu3/algorithms/agc.h b/src/ipa/ipu3/algorithms/agc.h\nindex 9d6e3ff1..7ed0ef7a 100644\n--- a/src/ipa/ipu3/algorithms/agc.h\n+++ b/src/ipa/ipu3/algorithms/agc.h\n@@ -13,6 +13,8 @@\n \n #include \n \n+#include \"libipa/histogram.h\"\n+\n #include \"algorithm.h\"\n \n namespace libcamera {\n@@ -43,6 +45,8 @@ private:\n \t\t\t\t const ipu3_uapi_grid_config &grid,\n \t\t\t\t const ipu3_uapi_stats_3a *stats,\n \t\t\t\t double gain);\n+\tvoid parseStatistics(const ipu3_uapi_stats_3a *stats,\n+\t\t\t const ipu3_uapi_grid_config &grid);\n \n \tuint64_t frameCount_;\n \n@@ -55,6 +59,10 @@ private:\n \tutils::Duration filteredExposure_;\n \n \tuint32_t stride_;\n+\tstd::vector reds_;\n+\tstd::vector blues_;\n+\tstd::vector greens_;\n+\tHistogram hist_;\n };\n \n } /* namespace ipa::ipu3::algorithms */\n","prefixes":["05/10"]}