From patchwork Wed Feb 23 10:48:22 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jean-Michel Hautbois X-Patchwork-Id: 15373 Return-Path: X-Original-To: parsemail@patchwork.libcamera.org Delivered-To: parsemail@patchwork.libcamera.org Received: from lancelot.ideasonboard.com (lancelot.ideasonboard.com [92.243.16.209]) by patchwork.libcamera.org (Postfix) with ESMTPS id A491FBE08A for ; Wed, 23 Feb 2022 10:48:33 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id 3F2076116E; Wed, 23 Feb 2022 11:48:31 +0100 (CET) Authentication-Results: lancelot.ideasonboard.com; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="ekQXlF3I"; dkim-atps=neutral Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [IPv6:2001:4b98:dc2:55:216:3eff:fef7:d647]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id A5DEC610F9 for ; Wed, 23 Feb 2022 11:48:28 +0100 (CET) Received: from tatooine.ideasonboard.com (unknown [IPv6:2a01:e0a:169:7140:7ebc:9e38:c4df:c57]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 5605A113C; Wed, 23 Feb 2022 11:48:28 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1645613308; bh=AuS7HKUAkwJC/4rMgcXb++lzPzJsuEGjdgTWHTEI4BU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ekQXlF3IeoTXD/gGolXKZLKAg+rwsxOGAnT9PXwyx8FISXUWL977gHQ9X1m+vCNyS wvRMEM05giGm88bqNGbKN1L3rbaOVv5jZx7XwEYXOqsGUfmVNlLD26+lHFFJRz8upP izDKhHw3t9Q4PdMMgj+Dy+wVOOqmIaYwKDGCa8MA= From: Jean-Michel Hautbois To: libcamera-devel@lists.libcamera.org Date: Wed, 23 Feb 2022 11:48:22 +0100 Message-Id: <20220223104824.25723-3-jeanmichel.hautbois@ideasonboard.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220223104824.25723-1-jeanmichel.hautbois@ideasonboard.com> References: <20220223104824.25723-1-jeanmichel.hautbois@ideasonboard.com> MIME-Version: 1.0 Subject: [libcamera-devel] [PATCH v2 2/4] ipa: rkisp1: Introduce Black Level Correction X-BeenThere: libcamera-devel@lists.libcamera.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: libcamera-devel-bounces@lists.libcamera.org Sender: "libcamera-devel" In order to have the proper pixel levels, apply a fixed black level correction, based on the imx219 tuning file in RPi. The value is 4096 on 16 bits, and the pipeline for RkISP1 is on 12 bits, scale it. Signed-off-by: Jean-Michel Hautbois Tested-by: Peter Griffin --- src/ipa/rkisp1/algorithms/blc.cpp | 57 +++++++++++++++++++++++++++ src/ipa/rkisp1/algorithms/blc.h | 30 ++++++++++++++ src/ipa/rkisp1/algorithms/meson.build | 1 + src/ipa/rkisp1/rkisp1.cpp | 2 + 4 files changed, 90 insertions(+) create mode 100644 src/ipa/rkisp1/algorithms/blc.cpp create mode 100644 src/ipa/rkisp1/algorithms/blc.h diff --git a/src/ipa/rkisp1/algorithms/blc.cpp b/src/ipa/rkisp1/algorithms/blc.cpp new file mode 100644 index 00000000..788953e3 --- /dev/null +++ b/src/ipa/rkisp1/algorithms/blc.cpp @@ -0,0 +1,57 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/* + * Copyright (C) 2021, Ideas On Board + * + * blc.cpp - RkISP1 Black Level Correction control + */ + +#include "blc.h" + +/** + * \file blc.h + */ + +namespace libcamera { + +namespace ipa::rkisp1::algorithms { + +/** + * \class BlackLevelCorrection + * \brief RkISP1 Black Level Correction control + * + * The pixels output by the camera normally include a black level, because + * sensors do not always report a signal level of '0' for black. Pixels at or + * below this level should be considered black. To achieve that, the RkISP BLC + * algorithm subtracts a configurable offset from all pixels. + * + * The black level can be measured at runtime from an optical dark region of the + * camera sensor, or measured during the camera tuning process. The first option + * isn't currently supported. + */ + +/** + * \copydoc libcamera::ipa::Algorithm::prepare + */ +void BlackLevelCorrection::prepare(IPAContext &context, + rkisp1_params_cfg *params) +{ + /* + * Substract fixed values taken from imx219 tuning file. + * \todo Use a configuration file for it ? + */ + params->others.bls_config.enable_auto = 0; + params->others.bls_config.fixed_val.r = 256; + params->others.bls_config.fixed_val.gr = 256; + params->others.bls_config.fixed_val.gb = 256; + params->others.bls_config.fixed_val.b = 256; + + if (context.frameContext.frameId == 0) { + params->module_en_update |= RKISP1_CIF_ISP_MODULE_BLS; + params->module_ens |= RKISP1_CIF_ISP_MODULE_BLS; + params->module_cfg_update |= RKISP1_CIF_ISP_MODULE_BLS; + } +} + +} /* namespace ipa::rkisp1::algorithms */ + +} /* namespace libcamera */ diff --git a/src/ipa/rkisp1/algorithms/blc.h b/src/ipa/rkisp1/algorithms/blc.h new file mode 100644 index 00000000..331a2209 --- /dev/null +++ b/src/ipa/rkisp1/algorithms/blc.h @@ -0,0 +1,30 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/* + * Copyright (C) 2021, Ideas On Board + * + * blc.h - RkISP1 Black Level Correction control + */ + +#pragma once + +#include + +#include "algorithm.h" + +namespace libcamera { + +struct IPACameraSensorInfo; + +namespace ipa::rkisp1::algorithms { + +class BlackLevelCorrection : public Algorithm +{ +public: + BlackLevelCorrection() = default; + ~BlackLevelCorrection() = default; + + void prepare(IPAContext &context, rkisp1_params_cfg *params) override; +}; + +} /* namespace ipa::rkisp1::algorithms */ +} /* namespace libcamera */ diff --git a/src/ipa/rkisp1/algorithms/meson.build b/src/ipa/rkisp1/algorithms/meson.build index a19c1a4f..27c97731 100644 --- a/src/ipa/rkisp1/algorithms/meson.build +++ b/src/ipa/rkisp1/algorithms/meson.build @@ -2,4 +2,5 @@ rkisp1_ipa_algorithms = files([ 'agc.cpp', + 'blc.cpp', ]) diff --git a/src/ipa/rkisp1/rkisp1.cpp b/src/ipa/rkisp1/rkisp1.cpp index 732ca2bb..f82b7cb3 100644 --- a/src/ipa/rkisp1/rkisp1.cpp +++ b/src/ipa/rkisp1/rkisp1.cpp @@ -27,6 +27,7 @@ #include "algorithms/agc.h" #include "algorithms/algorithm.h" +#include "algorithms/blc.h" #include "libipa/camera_sensor_helper.h" #include "ipa_context.h" @@ -125,6 +126,7 @@ int IPARkISP1::init(const IPASettings &settings, unsigned int hwRevision) /* Construct our Algorithms */ algorithms_.push_back(std::make_unique()); + algorithms_.push_back(std::make_unique()); return 0; }