From patchwork Sat Sep 3 18:10:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 17288 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 6A74EC3272 for ; Sat, 3 Sep 2022 18:10:54 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id 375B76203C; Sat, 3 Sep 2022 20:10:54 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=libcamera.org; s=mail; t=1662228654; bh=eMGSi/27H+OU236Wr8sTP2VnIhK3fDLlkmTXN6wvgBM=; h=To:Date:In-Reply-To:References:Subject:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To: From; b=K8rWVZiq6NVPiOB3zVsTZ+fwADIKvdEFMmKpi35XKVqj5WQrvHBwvqc4HvKiMWJgP xKswp/eaSwqTB1QBz9be77Yy92Lqwe6w8DrJvsLyz9R2Sb3gQgtEZsI+OkXBdynL3R kfISr4Np/z/kHM2hsxa9ZsyTfPlFA2kcvk7fDYlgX7XBuH1Kzr5aGb3vUIRzIQuU3s ym6UDtXGM5RCqCv08mAQ2gYreA6M1adIUsAm2IN0ow5XstQAPf164SW6bMcOsud0sI w6wRhR1N1GLZVrfGsipRS6G9MActFMG0b54yFJHF31PTQqwN5Mat2meISQe0KV30hL x+XxlQevUkM8Q== 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 C9C9D6203C for ; Sat, 3 Sep 2022 20:10:51 +0200 (CEST) Authentication-Results: lancelot.ideasonboard.com; dkim=pass (1024-bit key; unprotected) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="JMo2tXtX"; dkim-atps=neutral Received: from pendragon.ideasonboard.com (62-78-145-57.bb.dnainternet.fi [62.78.145.57]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 4F3024A8; Sat, 3 Sep 2022 20:10:51 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1662228651; bh=eMGSi/27H+OU236Wr8sTP2VnIhK3fDLlkmTXN6wvgBM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JMo2tXtXP44PwLB9vpwsQmYpWbIA6If/anQjfeoMNNmhDqgUEb3HPvOP2e9I7bGEl YtkONLsNvUgAdfET6+wuNU3i74vO34DHH3BTPOIQ4WsRGp6kEv8zWmBP+BoGmIrOku Vjco/pEiM+SbaHDvrN0xbWGZ91I+3k4bqrLhaRDI= To: libcamera-devel@lists.libcamera.org Date: Sat, 3 Sep 2022 21:10:35 +0300 Message-Id: <20220903181037.1406-2-laurent.pinchart@ideasonboard.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220903181037.1406-1-laurent.pinchart@ideasonboard.com> References: <20220903181037.1406-1-laurent.pinchart@ideasonboard.com> MIME-Version: 1.0 Subject: [libcamera-devel] [PATCH 1/3] pipeline: uvcvideo: Move camera ID generation to UVCCameraData class 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: Laurent Pinchart via libcamera-devel From: Laurent Pinchart Reply-To: Laurent Pinchart Errors-To: libcamera-devel-bounces@lists.libcamera.org Sender: "libcamera-devel" Move the camera ID generation to UVCCameraData, and cache the ID in that class. This will be useful to access the ID in multiple locations, such as when printing error messages. Signed-off-by: Laurent Pinchart Reviewed-by: Kieran Bingham --- src/libcamera/pipeline/uvcvideo/uvcvideo.cpp | 149 ++++++++++--------- 1 file changed, 78 insertions(+), 71 deletions(-) diff --git a/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp b/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp index 2ae640a31f68..22b67faf309e 100644 --- a/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp +++ b/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp @@ -46,8 +46,15 @@ public: ControlInfoMap::Map *ctrls); void bufferReady(FrameBuffer *buffer); + const std::string &id() const { return id_; } + std::unique_ptr video_; Stream stream_; + +private: + bool generateId(); + + std::string id_; }; class UVCCameraConfiguration : public CameraConfiguration @@ -81,8 +88,6 @@ public: bool match(DeviceEnumerator *enumerator) override; private: - std::string generateId(const UVCCameraData *data); - int processControl(ControlList *controls, unsigned int id, const ControlValue &value); int processControls(UVCCameraData *data, Request *request); @@ -384,69 +389,6 @@ int PipelineHandlerUVC::queueRequestDevice(Camera *camera, Request *request) return 0; } -std::string PipelineHandlerUVC::generateId(const UVCCameraData *data) -{ - const std::string path = data->video_->devicePath(); - - /* Create a controller ID from first device described in firmware. */ - std::string controllerId; - std::string searchPath = path; - while (true) { - std::string::size_type pos = searchPath.rfind('/'); - if (pos <= 1) { - LOG(UVC, Error) << "Can not find controller ID"; - return {}; - } - - searchPath = searchPath.substr(0, pos); - - controllerId = sysfs::firmwareNodePath(searchPath); - if (!controllerId.empty()) - break; - } - - /* - * Create a USB ID from the device path which has the known format: - * - * path = bus, "-", ports, ":", config, ".", interface ; - * bus = number ; - * ports = port, [ ".", ports ] ; - * port = number ; - * config = number ; - * interface = number ; - * - * Example: 3-2.4:1.0 - * - * The bus is not guaranteed to be stable and needs to be stripped from - * the USB ID. The final USB ID is built up of the ports, config and - * interface properties. - * - * Example 2.4:1.0. - */ - std::string usbId = utils::basename(path.c_str()); - usbId = usbId.substr(usbId.find('-') + 1); - - /* Creata a device ID from the USB devices vendor and product ID. */ - std::string deviceId; - for (const char *name : { "idVendor", "idProduct" }) { - std::ifstream file(path + "/../" + name); - - if (!file.is_open()) - return {}; - - std::string value; - std::getline(file, value); - file.close(); - - if (!deviceId.empty()) - deviceId += ":"; - - deviceId += value; - } - - return controllerId + "-" + usbId + "-" + deviceId; -} - bool PipelineHandlerUVC::match(DeviceEnumerator *enumerator) { MediaDevice *media; @@ -462,12 +404,7 @@ bool PipelineHandlerUVC::match(DeviceEnumerator *enumerator) return false; /* Create and register the camera. */ - std::string id = generateId(data.get()); - if (id.empty()) { - LOG(UVC, Error) << "Failed to generate camera ID"; - return false; - } - + std::string id = data->id(); std::set streams{ &data->stream_ }; std::shared_ptr camera = Camera::create(std::move(data), id, streams); @@ -502,6 +439,12 @@ int UVCCameraData::init(MediaDevice *media) video_->bufferReady.connect(this, &UVCCameraData::bufferReady); + /* Generate the camera ID. */ + if (!generateId()) { + LOG(UVC, Error) << "Failed to generate camera ID"; + return -EINVAL; + } + properties_.set(properties::Model, utils::toAscii(media->model())); /* @@ -563,6 +506,70 @@ int UVCCameraData::init(MediaDevice *media) return 0; } +bool UVCCameraData::generateId() +{ + const std::string path = video_->devicePath(); + + /* Create a controller ID from first device described in firmware. */ + std::string controllerId; + std::string searchPath = path; + while (true) { + std::string::size_type pos = searchPath.rfind('/'); + if (pos <= 1) { + LOG(UVC, Error) << "Can not find controller ID"; + return false; + } + + searchPath = searchPath.substr(0, pos); + + controllerId = sysfs::firmwareNodePath(searchPath); + if (!controllerId.empty()) + break; + } + + /* + * Create a USB ID from the device path which has the known format: + * + * path = bus, "-", ports, ":", config, ".", interface ; + * bus = number ; + * ports = port, [ ".", ports ] ; + * port = number ; + * config = number ; + * interface = number ; + * + * Example: 3-2.4:1.0 + * + * The bus is not guaranteed to be stable and needs to be stripped from + * the USB ID. The final USB ID is built up of the ports, config and + * interface properties. + * + * Example 2.4:1.0. + */ + std::string usbId = utils::basename(path.c_str()); + usbId = usbId.substr(usbId.find('-') + 1); + + /* Creata a device ID from the USB devices vendor and product ID. */ + std::string deviceId; + for (const char *name : { "idVendor", "idProduct" }) { + std::ifstream file(path + "/../" + name); + + if (!file.is_open()) + return false; + + std::string value; + std::getline(file, value); + file.close(); + + if (!deviceId.empty()) + deviceId += ":"; + + deviceId += value; + } + + id_ = controllerId + "-" + usbId + "-" + deviceId; + return true; +} + void UVCCameraData::addControl(uint32_t cid, const ControlInfo &v4l2Info, ControlInfoMap::Map *ctrls) {