{"id":18869,"url":"https://patchwork.libcamera.org/api/patches/18869/?format=json","web_url":"https://patchwork.libcamera.org/patch/18869/","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":"<20230724071101.5256-8-jacopo.mondi@ideasonboard.com>","date":"2023-07-24T07:10:58","name":"[libcamera-devel,v4,07/10] libcamera: transform: Add operations with Orientation","commit_ref":null,"pull_url":null,"state":"accepted","archived":false,"hash":"b48e062701793c893d2cf2330849c851e00d1353","submitter":{"id":143,"url":"https://patchwork.libcamera.org/api/people/143/?format=json","name":"Jacopo Mondi","email":"jacopo.mondi@ideasonboard.com"},"delegate":null,"mbox":"https://patchwork.libcamera.org/patch/18869/mbox/","series":[{"id":3981,"url":"https://patchwork.libcamera.org/api/series/3981/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=3981","date":"2023-07-24T07:10:51","name":"libcamera: Replace CameraConfiguration::transform","version":4,"mbox":"https://patchwork.libcamera.org/series/3981/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/18869/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/18869/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 0F6A0C324E\n\tfor ;\n\tMon, 24 Jul 2023 07:11:32 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id AD8E1628C0;\n\tMon, 24 Jul 2023 09:11:31 +0200 (CEST)","from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[213.167.242.64])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 49AD0628C2\n\tfor ;\n\tMon, 24 Jul 2023 09:11:26 +0200 (CEST)","from uno.localdomain (mob-5-91-20-233.net.vodafone.it\n\t[5.91.20.233])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id 17DE8735;\n\tMon, 24 Jul 2023 09:10:28 +0200 (CEST)"],"DKIM-Signature":["v=1; 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dkim=pass (1024-bit key; \n\tunprotected) header.d=ideasonboard.com\n\theader.i=@ideasonboard.com\n\theader.b=\"Bfbpb1/8\"; dkim-atps=neutral","To":"libcamera-devel@lists.libcamera.org","Date":"Mon, 24 Jul 2023 09:10:58 +0200","Message-Id":"<20230724071101.5256-8-jacopo.mondi@ideasonboard.com>","X-Mailer":"git-send-email 2.40.1","In-Reply-To":"<20230724071101.5256-1-jacopo.mondi@ideasonboard.com>","References":"<20230724071101.5256-1-jacopo.mondi@ideasonboard.com>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","Subject":"[libcamera-devel] [PATCH v4 07/10] libcamera: transform: Add\n\toperations with Orientation","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":"Jacopo Mondi via libcamera-devel ","Reply-To":"Jacopo Mondi ","Cc":"Jacopo Mondi ","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "},"content":"Add two operations that allows to combine Transform with Orientation.\n\n- Transform operator/(Orientation1, Orientation2)\n allows to easily get back the Transform that needs to be applied to\n Orientation2 to get Orientation1\n\n- Orientation operator*(Orientation1, Transform)\n allows to apply a Transform to an Orientation and obtain the\n combination of the two\n\nThese two operations allow applications to use Transforms to\nmanipulate the Orientation inside the CameraConfiguration, if they\nwish.\n\nSigned-off-by: Jacopo Mondi \nReviewed-by: David Plowman \n---\n include/libcamera/transform.h | 3 +++\n src/libcamera/transform.cpp | 37 +++++++++++++++++++++++++++++++++++\n 2 files changed, 40 insertions(+)","diff":"diff --git a/include/libcamera/transform.h b/include/libcamera/transform.h\nindex 14f1db0e8572..847a1f94713c 100644\n--- a/include/libcamera/transform.h\n+++ b/include/libcamera/transform.h\n@@ -74,6 +74,9 @@ Transform transformFromRotation(int angle, bool *success = nullptr);\n Transform transformFromOrientation(const Orientation &orientation);\n Orientation transformToOrientation(const Transform &transform);\n \n+Transform operator/(const Orientation &o1, const Orientation &o2);\n+Orientation operator*(const Orientation &o1, const Transform &t);\n+\n const char *transformToString(Transform t);\n \n } /* namespace libcamera */\ndiff --git a/src/libcamera/transform.cpp b/src/libcamera/transform.cpp\nindex d192d63d9290..80cd804ca530 100644\n--- a/src/libcamera/transform.cpp\n+++ b/src/libcamera/transform.cpp\n@@ -362,6 +362,43 @@ Orientation transformToOrientation(const Transform &transform)\n \treturn Orientation::rotate0;\n }\n \n+/**\n+ * \\brief Return the Transform that applied to \\a o2 gives \\a o1\n+ * \\param o1 The Orientation to obtain\n+ * \\param o2 The base Orientation\n+ *\n+ * This operation can be used to easily compute the Transform to apply to a\n+ * base orientation \\a o2 to get the desired orientation \\a o1.\n+ *\n+ * The CameraSensor class uses this function to compute what Transform to apply\n+ * to a camera with mounting rotation \\a o2 (the base) to obtain the user\n+ * requested orientation \\a o1.\n+ *\n+ * \\return A Transform that applied to \\a o2 gives \\a o1\n+ */\n+Transform operator/(const Orientation &o1, const Orientation &o2)\n+{\n+\tTransform t1 = transformFromOrientation(o1);\n+\tTransform t2 = transformFromOrientation(o2);\n+\n+\treturn -t2 * t1;\n+}\n+\n+/**\n+ * \\brief Apply the Transform \\a t on the base orientation \\a o\n+ * \\param o The base orientation\n+ * \\param t The transform to apply on \\a o\n+ * \\return The Orientation resulting from applying \\a t on \\a o\n+ */\n+Orientation operator*(const Orientation &o, const Transform &t)\n+{\n+\t/*\n+\t * Apply a Transform corresponding to the base orientation first and\n+\t * then apply \\a t to it.\n+\t */\n+\treturn transformToOrientation(transformFromOrientation(o) * t);\n+}\n+\n /**\n * \\brief Return a character string describing the transform\n * \\param[in] t The transform to be described.\n","prefixes":["libcamera-devel","v4","07/10"]}