{"id":16186,"url":"https://patchwork.libcamera.org/api/patches/16186/?format=json","web_url":"https://patchwork.libcamera.org/patch/16186/","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":"<20220609060306.57953-4-jeanmichel.hautbois@ideasonboard.com>","date":"2022-06-09T06:03:05","name":"[libcamera-devel,RFC,3/4] libcamera: lens: Add a helper to get the fixed range lens values","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"d2aa68ae4e80428177386880c4101537351bb90f","submitter":{"id":75,"url":"https://patchwork.libcamera.org/api/people/75/?format=json","name":"Jean-Michel Hautbois","email":"jeanmichel.hautbois@ideasonboard.com"},"delegate":null,"mbox":"https://patchwork.libcamera.org/patch/16186/mbox/","series":[{"id":3166,"url":"https://patchwork.libcamera.org/api/series/3166/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=3166","date":"2022-06-09T06:03:02","name":"Introduce camera lens properties","version":1,"mbox":"https://patchwork.libcamera.org/series/3166/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/16186/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/16186/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 0003DC3274\n\tfor ;\n\tThu, 9 Jun 2022 06:03:19 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 3257C65640;\n\tThu, 9 Jun 2022 08:03:17 +0200 (CEST)","from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[213.167.242.64])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 9A1E265635\n\tfor ;\n\tThu, 9 Jun 2022 08:03:13 +0200 (CEST)","from tatooine.ideasonboard.com (unknown\n\t[IPv6:2a01:e0a:169:7140:ae94:9dc3:50ea:aee6])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id 5FB1C9B1;\n\tThu, 9 Jun 2022 08:03:13 +0200 (CEST)"],"DKIM-Signature":["v=1; a=rsa-sha256; c=relaxed/simple; d=libcamera.org;\n\ts=mail; t=1654754597;\n\tbh=2HzTEAjgjllaAMAH5YbUX47ROk1ATiZreLc76dBGlyc=;\n\th=To:Date:In-Reply-To:References:Subject:List-Id:List-Unsubscribe:\n\tList-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:\n\tFrom;\n\tb=L7m2SZE4bdKbNMqt8q261vSOKo4rNkr1jnM0Xx5sPSENNKjRNKcZiBxODPFcD+LNi\n\tByGPw81pAfyQldscw3uucOF+Ue1195ZTlnR74/ZEuLAqoYow7I5tG5DWKdZfaMn8eF\n\tyDb1pb5yBoE9WZHSWnhfBVlChxKuzZsTltRRBIYZX2ZEWKvYMeZtVkBvzdLNEKkk62\n\t6gYzXg7Io8JnHSsuTXDjOz/oJUxV1E8t/0FzqvqGopEFnCFCXQ07akFqlmNdQsf0km\n\t2Ev6gCF+I8t4Nvq87FbV3QQiVcAyKs2miaRiH9fHB7hEhgpPMO9WElkL0MNcS76U9F\n\tUxAs3+ErzxPZA==","v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1654754593;\n\tbh=2HzTEAjgjllaAMAH5YbUX47ROk1ATiZreLc76dBGlyc=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=pLVLcvc2/Pv4lR0iH3+pMO/0WRcaVlJAC98LKMdFd9oOyxDrSEHjKpnYLPjc5EjBw\n\tTbJTUPz6eIIfH2yl8cogmJLC3VJ+RDX3p+St9gMitkAbf9AlT7vLVMkUNkwPbh9A/+\n\tAFL9An/4u9nKAIKaFzQH2KfV8O+25DYQaJVrbisQ="],"Authentication-Results":"lancelot.ideasonboard.com; dkim=pass (1024-bit key; \n\tunprotected) header.d=ideasonboard.com\n\theader.i=@ideasonboard.com\n\theader.b=\"pLVLcvc2\"; dkim-atps=neutral","To":"libcamera-devel@lists.libcamera.org","Date":"Thu, 9 Jun 2022 08:03:05 +0200","Message-Id":"<20220609060306.57953-4-jeanmichel.hautbois@ideasonboard.com>","X-Mailer":"git-send-email 2.34.1","In-Reply-To":"<20220609060306.57953-1-jeanmichel.hautbois@ideasonboard.com>","References":"<20220609060306.57953-1-jeanmichel.hautbois@ideasonboard.com>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","Subject":"[libcamera-devel] [RFC PATCH 3/4] libcamera: lens: Add a helper to\n\tget the fixed range lens values","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","From":"Jean-Michel Hautbois via libcamera-devel\n\t","Reply-To":"Jean-Michel Hautbois ","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "},"content":"When the focus algorithm runs, it can be asked to go to a specific\nposition, through the controls::LensPosition control. Those controls\nneed specific values to be known, in particular the minimum and maximum\nvalue the driver can set to the lens to make it move to a given\nposition.\n\nAdd a new helper on the camera lens side to get this range or a default\nnulled structure if it is not available. This particular value needs to\nbe taken into account by the caller and it shall use the minimum and\nmaximum reported by the driver.\n\nSigned-off-by: Jean-Michel Hautbois \n---\n include/libcamera/internal/camera_lens.h | 1 +\n .../internal/camera_lens_properties.h | 2 ++\n src/libcamera/camera_lens.cpp | 19 +++++++++++++++++++\n src/libcamera/camera_lens_properties.cpp | 9 ++++++++-\n 4 files changed, 30 insertions(+), 1 deletion(-)","diff":"diff --git a/include/libcamera/internal/camera_lens.h b/include/libcamera/internal/camera_lens.h\nindex 523a1481..f6daff01 100644\n--- a/include/libcamera/internal/camera_lens.h\n+++ b/include/libcamera/internal/camera_lens.h\n@@ -29,6 +29,7 @@ public:\n \n \tint init();\n \tint setFocusPosition(int32_t position);\n+\tconst Size &getLensRange();\n \n \tconst std::string &model() const { return model_; }\n \ndiff --git a/include/libcamera/internal/camera_lens_properties.h b/include/libcamera/internal/camera_lens_properties.h\nindex 73982550..7424b375 100644\n--- a/include/libcamera/internal/camera_lens_properties.h\n+++ b/include/libcamera/internal/camera_lens_properties.h\n@@ -17,6 +17,8 @@ namespace libcamera {\n \n struct CameraLensProperties {\n \tstatic const CameraLensProperties *get(const std::string &lens);\n+\n+\tSize lensFocusRange;\n };\n \n } /* namespace libcamera */\ndiff --git a/src/libcamera/camera_lens.cpp b/src/libcamera/camera_lens.cpp\nindex d4d44bc7..abec5a27 100644\n--- a/src/libcamera/camera_lens.cpp\n+++ b/src/libcamera/camera_lens.cpp\n@@ -79,6 +79,25 @@ int CameraLens::init()\n \treturn 0;\n }\n \n+/**\n+ * \\brief Retrieve the lens position range\n+ * \\return The minimum and maximum positions for the given lens or a default\n+ * nulled Size reference\n+ *\n+ * If a lens has no static properties associated, a special value is returned,\n+ * where the minimum and maximum are set to 0. The caller may then chose the\n+ * ones returned by the V4L2_CID_FOCUS_ABSOLUTE call.\n+ */\n+const Size &CameraLens::getLensRange()\n+{\n+\tstatic const Size defaultLensFocusRange = { 0, 0 };\n+\tif (!staticProps_ || staticProps_->lensFocusRange.isNull())\n+\t\treturn defaultLensFocusRange;\n+\n+\treturn staticProps_->lensFocusRange;\n+}\n+\n+\n /**\n * \\brief This function sets the focal point of the lens to a specific position.\n * \\param[in] position The focal point of the lens\ndiff --git a/src/libcamera/camera_lens_properties.cpp b/src/libcamera/camera_lens_properties.cpp\nindex dee73b43..225546ae 100644\n--- a/src/libcamera/camera_lens_properties.cpp\n+++ b/src/libcamera/camera_lens_properties.cpp\n@@ -32,6 +32,9 @@ LOG_DEFINE_CATEGORY(CameraLensProperties)\n /**\n * \\struct CameraLensProperties\n * \\brief Database of camera lens properties\n+ *\n+ * \\var CameraLensProperties::lensFocusRange\n+ * \\brief The limits for the sensor position, stored as a min and a max.\n */\n \n /**\n@@ -42,7 +45,11 @@ LOG_DEFINE_CATEGORY(CameraLensProperties)\n */\n const CameraLensProperties *CameraLensProperties::get(const std::string &lens)\n {\n-\tstatic const std::map lensProps = {};\n+\tstatic const std::map lensProps = {\n+\t\t{ \"dw9714\", {\n+\t\t\t\t.lensFocusRange = { 150, 800 },\n+\t\t} },\n+\t};\n \n \tconst auto it = lensProps.find(lens);\n \tif (it == lensProps.end()) {\n","prefixes":["libcamera-devel","RFC","3/4"]}