From patchwork Thu Jun 15 17:26:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kieran Bingham X-Patchwork-Id: 18740 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 5C149C3291 for ; Thu, 15 Jun 2023 17:26:21 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id 3E986628C8; Thu, 15 Jun 2023 19:26:20 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=libcamera.org; s=mail; t=1686849980; bh=3uM+FQeNtAq1HBah6XYx6pdCz2blzMPIpWIOXkCd/xA=; h=To:Date:In-Reply-To:References:Subject:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:Cc: From; b=XYY9sgNnsCwY0W8dTNGSP1dpC57VVHXzF1bmSBRXQg8ARTJ0U8kw1i9gtAvKzlHGW fBVLwgdMW17iQ90xBQvB8woRIS2FAmfh6gqD25B7v7qR9Zj9G09r4qo1EBpaixkobm mSRbe92TCjDzA6d8LOIM9SNYlT5hBHflBxxPsNDbZi3ZXDtQ42/0+ctSeGmoP1BM0k Ne/boADgfGStWtsdkWPIkF86Mighs9GIHXPs2FVOuS7B+Z6X1OrJ0XJTHqgPYEqUlj 59OEi8B2u8WA5ifUOTDdj7DDSi56xbPqAJSbJeR+G1vOFR6YXYppkcBL7IbofW+RuD dw1FJvb+XqqZw== 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 B40AF628BB for ; Thu, 15 Jun 2023 19:26:16 +0200 (CEST) Authentication-Results: lancelot.ideasonboard.com; dkim=pass (1024-bit key; unprotected) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="nxbTnZHv"; dkim-atps=neutral Received: from Monstersaurus.local (aztw-30-b2-v4wan-166917-cust845.vm26.cable.virginm.net [82.37.23.78]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 0C902DFB; Thu, 15 Jun 2023 19:25:45 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1686849945; bh=3uM+FQeNtAq1HBah6XYx6pdCz2blzMPIpWIOXkCd/xA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nxbTnZHvksaynXnjA6fJhZ+p8gV9n6Q4dTEPT645OKONdCbyGST7rlyYi6WMIhy6R EMsWgwvzYgDhxBTicraLfKOO99CmpEYY4DgJPye8P4AbaRnIHwsH/ciQa9IXMFOglx VvNj5HDCxb/AZmucdOluM6ipv0Dq+Mr+lj13eGNk= To: libcamera devel Date: Thu, 15 Jun 2023 18:26:06 +0100 Message-Id: <20230615172608.378258-4-kieran.bingham@ideasonboard.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230615172608.378258-1-kieran.bingham@ideasonboard.com> References: <20230615172608.378258-1-kieran.bingham@ideasonboard.com> MIME-Version: 1.0 Subject: [libcamera-devel] [PATCH v4 3/5] libcamera: camera_manager: Move {add, remove}Camera to internal 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: Kieran Bingham via libcamera-devel From: Kieran Bingham Reply-To: Kieran Bingham Cc: Jacopo Mondi , Ashok Sidipotu Errors-To: libcamera-devel-bounces@lists.libcamera.org Sender: "libcamera-devel" The CameraManager exposes addCamera and removeCamera as public API calls, while they should never be called from an application. These calls are only expected to be used by PipelineHandlers to update the CameraManager that a new Camera has been created and allow the Camera Manager to expose it to applications. Remove the public calls and update the private implementations such that they can be used directly by the PipelineHandler through the internal CameraManager::Private provided by the Extensible class. Reviewed-by: Jacopo Mondi Tested-by: Ashok Sidipotu Reviewed-by: Laurent Pinchart Signed-off-by: Kieran Bingham --- include/libcamera/camera_manager.h | 4 - include/libcamera/internal/camera_manager.h | 2 +- src/libcamera/camera_manager.cpp | 87 +++++++++------------ src/libcamera/pipeline_handler.cpp | 6 +- 4 files changed, 43 insertions(+), 56 deletions(-) diff --git a/include/libcamera/camera_manager.h b/include/libcamera/camera_manager.h index 4b1fb7568e83..9767acc42c89 100644 --- a/include/libcamera/camera_manager.h +++ b/include/libcamera/camera_manager.h @@ -34,10 +34,6 @@ public: std::shared_ptr get(const std::string &id); std::shared_ptr get(dev_t devnum); - void addCamera(std::shared_ptr camera, - const std::vector &devnums); - void removeCamera(std::shared_ptr camera); - static const std::string &version() { return version_; } Signal> cameraAdded; diff --git a/include/libcamera/internal/camera_manager.h b/include/libcamera/internal/camera_manager.h index 96a83bd7ef3c..84aac499ea13 100644 --- a/include/libcamera/internal/camera_manager.h +++ b/include/libcamera/internal/camera_manager.h @@ -37,7 +37,7 @@ public: int start(); void addCamera(std::shared_ptr camera, const std::vector &devnums) LIBCAMERA_TSA_EXCLUDES(mutex_); - void removeCamera(Camera *camera) LIBCAMERA_TSA_EXCLUDES(mutex_); + void removeCamera(std::shared_ptr camera) LIBCAMERA_TSA_EXCLUDES(mutex_); /* * This mutex protects diff --git a/src/libcamera/camera_manager.cpp b/src/libcamera/camera_manager.cpp index 882b2d4b234c..cafd7bce574e 100644 --- a/src/libcamera/camera_manager.cpp +++ b/src/libcamera/camera_manager.cpp @@ -148,9 +148,25 @@ void CameraManager::Private::cleanup() enumerator_.reset(nullptr); } +/** + * \brief Add a camera to the camera manager + * \param[in] camera The camera to be added + * \param[in] devnums The device numbers to associate with \a camera + * + * This function is called by pipeline handlers to register the cameras they + * handle with the camera manager. Registered cameras are immediately made + * available to the system. + * + * \a devnums are used by the V4L2 compatibility layer to map V4L2 device nodes + * to Camera instances. + * + * \context This function shall be called from the CameraManager thread. + */ void CameraManager::Private::addCamera(std::shared_ptr camera, const std::vector &devnums) { + ASSERT(Thread::current() == this); + MutexLocker locker(mutex_); for (const std::shared_ptr &c : cameras_) { @@ -167,15 +183,31 @@ void CameraManager::Private::addCamera(std::shared_ptr camera, unsigned int index = cameras_.size() - 1; for (dev_t devnum : devnums) camerasByDevnum_[devnum] = cameras_[index]; + + /* Report the addition to the public signal */ + CameraManager *const o = LIBCAMERA_O_PTR(); + o->cameraAdded.emit(cameras_[index]); } -void CameraManager::Private::removeCamera(Camera *camera) +/** + * \brief Remove a camera from the camera manager + * \param[in] camera The camera to be removed + * + * This function is called by pipeline handlers to unregister cameras from the + * camera manager. Unregistered cameras won't be reported anymore by the + * cameras() and get() calls, but references may still exist in applications. + * + * \context This function shall be called from the CameraManager thread. + */ +void CameraManager::Private::removeCamera(std::shared_ptr camera) { + ASSERT(Thread::current() == this); + MutexLocker locker(mutex_); auto iter = std::find_if(cameras_.begin(), cameras_.end(), [camera](std::shared_ptr &c) { - return c.get() == camera; + return c.get() == camera.get(); }); if (iter == cameras_.end()) return; @@ -185,12 +217,16 @@ void CameraManager::Private::removeCamera(Camera *camera) auto iter_d = std::find_if(camerasByDevnum_.begin(), camerasByDevnum_.end(), [camera](const std::pair> &p) { - return p.second.lock().get() == camera; + return p.second.lock().get() == camera.get(); }); if (iter_d != camerasByDevnum_.end()) camerasByDevnum_.erase(iter_d); cameras_.erase(iter); + + /* Report the removal to the public signal */ + CameraManager *const o = LIBCAMERA_O_PTR(); + o->cameraRemoved.emit(camera); } /** @@ -383,51 +419,6 @@ std::shared_ptr CameraManager::get(dev_t devnum) * perform any blocking operation. */ -/** - * \brief Add a camera to the camera manager - * \param[in] camera The camera to be added - * \param[in] devnums The device numbers to associate with \a camera - * - * This function is called by pipeline handlers to register the cameras they - * handle with the camera manager. Registered cameras are immediately made - * available to the system. - * - * \a devnums are used by the V4L2 compatibility layer to map V4L2 device nodes - * to Camera instances. - * - * \context This function shall be called from the CameraManager thread. - */ -void CameraManager::addCamera(std::shared_ptr camera, - const std::vector &devnums) -{ - Private *const d = _d(); - - ASSERT(Thread::current() == d); - - d->addCamera(camera, devnums); - cameraAdded.emit(camera); -} - -/** - * \brief Remove a camera from the camera manager - * \param[in] camera The camera to be removed - * - * This function is called by pipeline handlers to unregister cameras from the - * camera manager. Unregistered cameras won't be reported anymore by the - * cameras() and get() calls, but references may still exist in applications. - * - * \context This function shall be called from the CameraManager thread. - */ -void CameraManager::removeCamera(std::shared_ptr camera) -{ - Private *const d = _d(); - - ASSERT(Thread::current() == d); - - d->removeCamera(camera.get()); - cameraRemoved.emit(camera); -} - /** * \fn const std::string &CameraManager::version() * \brief Retrieve the libcamera version string diff --git a/src/libcamera/pipeline_handler.cpp b/src/libcamera/pipeline_handler.cpp index f72613b8e515..49092ea88a58 100644 --- a/src/libcamera/pipeline_handler.cpp +++ b/src/libcamera/pipeline_handler.cpp @@ -16,10 +16,10 @@ #include #include -#include #include #include "libcamera/internal/camera.h" +#include "libcamera/internal/camera_manager.h" #include "libcamera/internal/device_enumerator.h" #include "libcamera/internal/framebuffer.h" #include "libcamera/internal/media_device.h" @@ -624,7 +624,7 @@ void PipelineHandler::registerCamera(std::shared_ptr camera) } } - manager_->addCamera(std::move(camera), devnums); + manager_->_d()->addCamera(std::move(camera), devnums); } /** @@ -691,7 +691,7 @@ void PipelineHandler::disconnect() continue; camera->disconnect(); - manager_->removeCamera(camera); + manager_->_d()->removeCamera(camera); } }