From patchwork Mon Jun 19 14:21:11 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 18750 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 2D154C3237 for ; Mon, 19 Jun 2023 14:21:33 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id 820D0628C1; Mon, 19 Jun 2023 16:21:32 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=libcamera.org; s=mail; t=1687184492; bh=8xqR0XJK/7JpsFPOg/JxsdVzkHBY5ADJNd982TRrjf4=; h=To:Date:Subject:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:Cc:From; b=L+KmFDBmIl+fk3yBfdB5OaanTJzkXw4Q/kpxHUlq8DZy4ANVjNGafdtfyWR/eGEew bc4CbSwFNzAjP/7UEGGhq2EQDpi7nhRlsX5H0ZEigqyaDeZ9YnB9FuVGQ30vmCfZbh 6cTKZW6x2U2Nh7dH8EkcCxBi4z+neZhHWa+VzvjKEVm6ErGjlL3IvF8DQnarJjrwhM coGKEn8w23E3UoWdBahN5AbT0fmo9eAsuSjR4rCcvsJdLPCGdOaE2FxmkZMc0YSaCr zPZUO3nOfXiai/bftJ23he6hzq4qMFfC1NJ/hJdXkW4MB3JUmXu3jqJOpcaE6dlWBO 7MYP3bFW/Bb1A== 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 04D61614FD for ; Mon, 19 Jun 2023 16:21:31 +0200 (CEST) Authentication-Results: lancelot.ideasonboard.com; dkim=pass (1024-bit key; unprotected) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="ZFJJtu/W"; dkim-atps=neutral Received: from uno.lan (unknown [IPv6:2001:b07:5d2e:52c9:72c3:346:a663:c82d]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 8005C894; Mon, 19 Jun 2023 16:20:56 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1687184456; bh=8xqR0XJK/7JpsFPOg/JxsdVzkHBY5ADJNd982TRrjf4=; h=From:To:Cc:Subject:Date:From; b=ZFJJtu/WTl5oE2E+tN+Vz1kYni8MN0c8CYYyieKrE+ckBpJ/ggQ+3a4b16PCuYFr5 QU4r2Y9jiOhq4yipf6pgxFaoZyFACMsN2jaOabgubLb/ST/Vi701Z72TEqNgCRE81l V2Cm9au4rr+OInx08CEYs+a+aBhqToo7ACobzyeY= To: libcamera-devel@lists.libcamera.org Date: Mon, 19 Jun 2023 16:21:11 +0200 Message-Id: <20230619142111.30574-1-jacopo.mondi@ideasonboard.com> X-Mailer: git-send-email 2.40.1 MIME-Version: 1.0 Subject: [libcamera-devel] [PATCH] libcamera: camera_sensor: Cache rotationTransform_ 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: , X-Patchwork-Original-From: Jacopo Mondi via libcamera-devel From: Jacopo Mondi Reply-To: Jacopo Mondi Cc: Jacopo Mondi Errors-To: libcamera-devel-bounces@lists.libcamera.org Sender: "libcamera-devel" The rotationTransform_ depends on a V4L2 control whose value does not change for the whole lifetime of the camera. Instead of re-calculating it everytime the camera is configured, cache it at properties initialization time. Signed-off-by: Jacopo Mondi --- include/libcamera/internal/camera_sensor.h | 1 + src/libcamera/camera_sensor.cpp | 54 +++++++++++++--------- 2 files changed, 32 insertions(+), 23 deletions(-) -- 2.40.1 diff --git a/include/libcamera/internal/camera_sensor.h b/include/libcamera/internal/camera_sensor.h index 02c77ab037da..02b4b4d25e6d 100644 --- a/include/libcamera/internal/camera_sensor.h +++ b/include/libcamera/internal/camera_sensor.h @@ -107,6 +107,7 @@ private: Rectangle activeArea_; const BayerFormat *bayerFormat_; bool supportFlips_; + Transform rotationTransform_; ControlList properties_; diff --git a/src/libcamera/camera_sensor.cpp b/src/libcamera/camera_sensor.cpp index f3a5aa37149f..a15a6c89c5c8 100644 --- a/src/libcamera/camera_sensor.cpp +++ b/src/libcamera/camera_sensor.cpp @@ -461,18 +461,36 @@ int CameraSensor::initProperties() const auto &rotationControl = controls.find(V4L2_CID_CAMERA_SENSOR_ROTATION); if (rotationControl != controls.end()) { + propertyValue = rotationControl->second.def().get(); + /* - * validateTransform() compensates for the mounting rotation. - * However, as a camera sensor can only compensate rotations - * by applying H/VFlips, only rotation of 180 degrees are - * automatically compensated. The other valid rotations (Rot90 - * and Rot270) require transposition, which the camera sensor - * cannot perform, so leave them untouched. + * Cache the Transform associated with the camera mounting + * rotation for later use in validateTransform(). + */ + bool success; + rotationTransform_ = transformFromRotation(propertyValue, &success); + if (!success) { + LOG(CameraSensor, Warning) + << "Invalid rotation of " << propertyValue + << " degrees - ignoring"; + rotationTransform_ = Transform::Identity; + } + + /* + * Adjust property::Rotation as validateTransform() compensates + * for the mounting rotation. However, as a camera sensor can + * only compensate rotations by applying H/VFlips, only rotation + * of 180 degrees are automatically compensated. The other valid + * rotations (Rot90 and Rot270) require transposition, which the + * camera sensor cannot perform, so leave them untouched. */ - propertyValue = rotationControl->second.def().get(); if (propertyValue == 180 && supportFlips_) propertyValue = 0; properties_.set(properties::Rotation, propertyValue); + } else { + LOG(CameraSensor, Warning) + << "Rotation control not available, default to 0 degreees"; + rotationTransform_ = Transform::Identity; } properties_.set(properties::PixelArraySize, pixelArraySize_); @@ -1038,21 +1056,11 @@ void CameraSensor::updateControlInfo() */ Transform CameraSensor::validateTransform(Transform *transform) const { - /* Adjust the requested transform to compensate the sensor mounting rotation. */ - const ControlInfoMap &controls = subdev_->controls(); - int rotation = 0; - - const auto &rotationControl = controls.find(V4L2_CID_CAMERA_SENSOR_ROTATION); - if (rotationControl != controls.end()) - rotation = rotationControl->second.def().get(); - - bool success; - Transform rotationTransform = transformFromRotation(rotation, &success); - if (!success) - LOG(CameraSensor, Warning) << "Invalid rotation of " << rotation - << " degrees - ignoring"; - - Transform combined = *transform * rotationTransform; + /* + * Combine the requested transform to compensate the sensor mounting + * rotation. + */ + Transform combined = *transform * rotationTransform_; /* * We combine the platform and user transform, but must "adjust away" @@ -1083,7 +1091,7 @@ Transform CameraSensor::validateTransform(Transform *transform) const * rise to this is the inverse of the rotation. (Recall that * combined = transform * rotationTransform.) */ - *transform = -rotationTransform; + *transform = -rotationTransform_; combined = Transform::Identity; }