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{ "id": 21051, "url": "https://patchwork.libcamera.org/api/1.1/patches/21051/?format=api", "web_url": "https://patchwork.libcamera.org/patch/21051/", "project": { "id": 1, "url": "https://patchwork.libcamera.org/api/1.1/projects/1/?format=api", "name": "libcamera", "link_name": "libcamera", "list_id": "libcamera_core", "list_email": "libcamera-devel@lists.libcamera.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20240829195703.1456614-4-chenghaoyang@chromium.org>", "date": "2024-08-29T19:47:42", "name": "[v10,3/7] libcamera: virtual: Add VirtualPipelineHandler", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": false, "hash": "bbd5520e39d1404da2d90c733e17ab9b2acc9dc6", "submitter": { "id": 117, "url": "https://patchwork.libcamera.org/api/1.1/people/117/?format=api", "name": "Cheng-Hao Yang", "email": "chenghaoyang@chromium.org" }, "delegate": null, "mbox": "https://patchwork.libcamera.org/patch/21051/mbox/", "series": [ { "id": 4547, "url": "https://patchwork.libcamera.org/api/1.1/series/4547/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=4547", "date": "2024-08-29T19:47:39", "name": "Add VirtualPipelineHandler", "version": 10, "mbox": "https://patchwork.libcamera.org/series/4547/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/patches/21051/comments/", "check": "pending", "checks": "https://patchwork.libcamera.org/api/patches/21051/checks/", "tags": {}, "headers": { "Return-Path": "<libcamera-devel-bounces@lists.libcamera.org>", "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 42F17C32C2\n\tfor <parsemail@patchwork.libcamera.org>;\n\tThu, 29 Aug 2024 19:57:20 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 09C0A634D2;\n\tThu, 29 Aug 2024 21:57:19 +0200 (CEST)", "from mail-wm1-x333.google.com (mail-wm1-x333.google.com\n\t[IPv6:2a00:1450:4864:20::333])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 6A82A6347E\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tThu, 29 Aug 2024 21:57:09 +0200 (CEST)", "by mail-wm1-x333.google.com with SMTP id\n\t5b1f17b1804b1-4280bca3960so9236085e9.3\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tThu, 29 Aug 2024 12:57:09 -0700 (PDT)", "from chenghaoyang-germany.c.googlers.com.com\n\t(161.126.77.34.bc.googleusercontent.com. [34.77.126.161])\n\tby smtp.gmail.com with ESMTPSA id\n\t5b1f17b1804b1-42ba7b4271fsm54602805e9.29.2024.08.29.12.57.07\n\t(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n\tThu, 29 Aug 2024 12:57:07 -0700 (PDT)" ], "Authentication-Results": "lancelot.ideasonboard.com; dkim=pass (1024-bit key;\n\tunprotected) header.d=chromium.org header.i=@chromium.org\n\theader.b=\"HbMYEWWi\"; dkim-atps=neutral", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=chromium.org; s=google; t=1724961428; x=1725566228;\n\tdarn=lists.libcamera.org; \n\th=content-transfer-encoding:mime-version:references:in-reply-to\n\t:message-id:date:subject:cc:to:from:from:to:cc:subject:date\n\t:message-id:reply-to;\n\tbh=ezM3n0mE+r+MM5FN9/A8FK5e+VugHHICwCh/6CBa0wg=;\n\tb=HbMYEWWijC/unzZD+0/FpyOOQpaSvuOgrz1n8jv6PaqBsC0UiSY0UaLQKFKASlnd5p\n\troNB3HO6yAbAHRFfstUp5qbu7xoZkS7X3aO46LmLJQk1UY+Bm/uAoKjvKczYMjX8U57f\n\teJ/rBzgbkt/7eGRE8OpUn+QL0M/FytRrgBhxs=", "X-Google-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=1e100.net; s=20230601; t=1724961428; x=1725566228;\n\th=content-transfer-encoding:mime-version:references:in-reply-to\n\t:message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc\n\t:subject:date:message-id:reply-to;\n\tbh=ezM3n0mE+r+MM5FN9/A8FK5e+VugHHICwCh/6CBa0wg=;\n\tb=ZWV/HuIAVFZAAOvypzdQPKNR6I2yt4N2VnnHa833j6UAgLE6t2e34N/NA8JKwJPUdY\n\tCTxe27+X7JAUzdQR9gF9pLqHinZ/3bsh6DNbEvPs77mw5mh8hAIK5vt6nDDWozAgc0sv\n\t3DOC7CEHIpsYHolaNRo42BgjNvOLZ4UPvn58CBRZ6BdvLsk6IKDe9vEUXeobuWMIOthc\n\tt4+54v83/wckEVOjiWvO7JNoy95pBoPDaV2S60/fRp2E2hTN/HsonLMirQMknd3NHUmP\n\t66HxjTznDHKNCtL1hW48VEIST3rZs+Qe+vXiraUMW99XJ3mfBZRhWb8hJ9X19GqyVehJ\n\tOVMg==", "X-Gm-Message-State": "AOJu0YznRFlNepu00wB1aWrnvBfWN2OfTPf6tKliExntfZAjs8n6zCjK\n\tJKSPuagsTEOlHYQaRYxrQDOkP9Qr9wHmlDLD8KfVJkWBNXpBikEfPGfZ0yAjQOybzU2Kjyv4j1b\n\tZqQ==", "X-Google-Smtp-Source": "AGHT+IGYnMSrbU1ZaHILfhaMcadO9RPJ47OCAXZjQbglniS48HLmG9NxzRi7Pe/g2AOCRODCR40cQg==", "X-Received": "by 2002:a05:600c:1391:b0:426:5546:71a with SMTP id\n\t5b1f17b1804b1-42bb023cdcbmr32488515e9.2.1724961428294; \n\tThu, 29 Aug 2024 12:57:08 -0700 (PDT)", "From": "Harvey Yang <chenghaoyang@chromium.org>", "To": "libcamera-devel@lists.libcamera.org", "Cc": "Harvey Yang <chenghaoyang@chromium.org>", "Subject": "[PATCH v10 3/7] libcamera: virtual: Add VirtualPipelineHandler", "Date": "Thu, 29 Aug 2024 19:47:42 +0000", "Message-ID": "<20240829195703.1456614-4-chenghaoyang@chromium.org>", "X-Mailer": "git-send-email 2.46.0.469.g59c65b2a67-goog", "In-Reply-To": "<20240829195703.1456614-1-chenghaoyang@chromium.org>", "References": "<20240829195703.1456614-1-chenghaoyang@chromium.org>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-BeenThere": "libcamera-devel@lists.libcamera.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "<libcamera-devel.lists.libcamera.org>", "List-Unsubscribe": "<https://lists.libcamera.org/options/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=unsubscribe>", "List-Archive": "<https://lists.libcamera.org/pipermail/libcamera-devel/>", "List-Post": "<mailto:libcamera-devel@lists.libcamera.org>", "List-Help": "<mailto:libcamera-devel-request@lists.libcamera.org?subject=help>", "List-Subscribe": "<https://lists.libcamera.org/listinfo/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=subscribe>", "Errors-To": "libcamera-devel-bounces@lists.libcamera.org", "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>" }, "content": "Add VirtualPipelineHandler for more unit tests and verfiy libcamera\ninfrastructure works on devices without using hardware cameras.\n\nSigned-off-by: Harvey Yang <chenghaoyang@chromium.org>\n---\n meson.build | 1 +\n meson_options.txt | 3 +-\n src/libcamera/pipeline/virtual/meson.build | 5 +\n src/libcamera/pipeline/virtual/virtual.cpp | 261 +++++++++++++++++++++\n src/libcamera/pipeline/virtual/virtual.h | 89 +++++++\n 5 files changed, 358 insertions(+), 1 deletion(-)\n create mode 100644 src/libcamera/pipeline/virtual/meson.build\n create mode 100644 src/libcamera/pipeline/virtual/virtual.cpp\n create mode 100644 src/libcamera/pipeline/virtual/virtual.h", "diff": "diff --git a/meson.build b/meson.build\nindex 432ae1337..ff9a70cf8 100644\n--- a/meson.build\n+++ b/meson.build\n@@ -214,6 +214,7 @@ pipelines_support = {\n 'simple': ['any'],\n 'uvcvideo': ['any'],\n 'vimc': ['test'],\n+ 'virtual': ['test'],\n }\n \n if pipelines.contains('all')\ndiff --git a/meson_options.txt b/meson_options.txt\nindex 7aa412491..c91cd241a 100644\n--- a/meson_options.txt\n+++ b/meson_options.txt\n@@ -53,7 +53,8 @@ option('pipelines',\n 'rpi/vc4',\n 'simple',\n 'uvcvideo',\n- 'vimc'\n+ 'vimc',\n+ 'virtual'\n ],\n description : 'Select which pipeline handlers to build. If this is set to \"auto\", all the pipelines applicable to the target architecture will be built. If this is set to \"all\", all the pipelines will be built. If both are selected then \"all\" will take precedence.')\n \ndiff --git a/src/libcamera/pipeline/virtual/meson.build b/src/libcamera/pipeline/virtual/meson.build\nnew file mode 100644\nindex 000000000..ada1b3358\n--- /dev/null\n+++ b/src/libcamera/pipeline/virtual/meson.build\n@@ -0,0 +1,5 @@\n+# SPDX-License-Identifier: CC0-1.0\n+\n+libcamera_internal_sources += files([\n+ 'virtual.cpp',\n+])\ndiff --git a/src/libcamera/pipeline/virtual/virtual.cpp b/src/libcamera/pipeline/virtual/virtual.cpp\nnew file mode 100644\nindex 000000000..d4e3f60ad\n--- /dev/null\n+++ b/src/libcamera/pipeline/virtual/virtual.cpp\n@@ -0,0 +1,261 @@\n+/* SPDX-License-Identifier: LGPL-2.1-or-later */\n+/*\n+ * Copyright (C) 2024, Google Inc.\n+ *\n+ * virtual.cpp - Pipeline handler for virtual cameras\n+ */\n+\n+#include \"virtual.h\"\n+\n+#include <algorithm>\n+#include <map>\n+#include <memory>\n+#include <set>\n+#include <utility>\n+#include <vector>\n+\n+#include <libcamera/base/log.h>\n+\n+#include <libcamera/control_ids.h>\n+#include <libcamera/controls.h>\n+#include <libcamera/formats.h>\n+#include <libcamera/property_ids.h>\n+\n+#include \"libcamera/internal/camera.h\"\n+#include \"libcamera/internal/formats.h\"\n+#include \"libcamera/internal/pipeline_handler.h\"\n+\n+namespace libcamera {\n+\n+LOG_DEFINE_CATEGORY(Virtual)\n+\n+namespace {\n+\n+uint64_t currentTimestamp()\n+{\n+\tstruct timespec ts;\n+\tif (clock_gettime(CLOCK_MONOTONIC, &ts) < 0) {\n+\t\tLOG(Virtual, Error) << \"Get clock time fails\";\n+\t\treturn 0;\n+\t}\n+\n+\treturn ts.tv_sec * 1'000'000'000LL + ts.tv_nsec;\n+}\n+\n+} /* namespace */\n+\n+VirtualCameraData::VirtualCameraData(PipelineHandler *pipe,\n+\t\t\t\t std::vector<Resolution> supportedResolutions)\n+\t: Camera::Private(pipe), supportedResolutions_(std::move(supportedResolutions))\n+{\n+\tfor (const auto &resolution : supportedResolutions_) {\n+\t\tif (minResolutionSize_.isNull() || minResolutionSize_ > resolution.size)\n+\t\t\tminResolutionSize_ = resolution.size;\n+\n+\t\tmaxResolutionSize_ = std::max(maxResolutionSize_, resolution.size);\n+\t}\n+\n+\t/* \\todo Support multiple streams and pass multi_stream_test */\n+\tstreamConfigs_.resize(kMaxStream);\n+}\n+\n+VirtualCameraConfiguration::VirtualCameraConfiguration(VirtualCameraData *data)\n+\t: CameraConfiguration(), data_(data)\n+{\n+}\n+\n+CameraConfiguration::Status VirtualCameraConfiguration::validate()\n+{\n+\tStatus status = Valid;\n+\n+\tif (config_.empty()) {\n+\t\tLOG(Virtual, Error) << \"Empty config\";\n+\t\treturn Invalid;\n+\t}\n+\n+\t/* Only one stream is supported */\n+\tif (config_.size() > VirtualCameraData::kMaxStream) {\n+\t\tconfig_.resize(VirtualCameraData::kMaxStream);\n+\t\tstatus = Adjusted;\n+\t}\n+\n+\tfor (StreamConfiguration &cfg : config_) {\n+\t\tbool found = false;\n+\t\tfor (const auto &resolution : data_->supportedResolutions_) {\n+\t\t\tif (resolution.size.width == cfg.size.width &&\n+\t\t\t resolution.size.height == cfg.size.height) {\n+\t\t\t\tfound = true;\n+\t\t\t\tbreak;\n+\t\t\t}\n+\t\t}\n+\n+\t\tif (!found) {\n+\t\t\tcfg.size = data_->maxResolutionSize_;\n+\t\t\tstatus = Adjusted;\n+\t\t}\n+\n+\t\tconst PixelFormatInfo &info = PixelFormatInfo::info(cfg.pixelFormat);\n+\t\tcfg.stride = info.stride(cfg.size.width, 0, 1);\n+\t\tcfg.frameSize = info.frameSize(cfg.size, 1);\n+\n+\t\tcfg.bufferCount = VirtualCameraConfiguration::kBufferCount;\n+\n+\t\tif (cfg.pixelFormat != formats::NV12) {\n+\t\t\tcfg.pixelFormat = formats::NV12;\n+\t\t\tLOG(Virtual, Debug)\n+\t\t\t\t<< \"Stream configuration adjusted to \" << cfg.toString();\n+\t\t\tstatus = Adjusted;\n+\t\t}\n+\t}\n+\n+\treturn status;\n+}\n+\n+PipelineHandlerVirtual::PipelineHandlerVirtual(CameraManager *manager)\n+\t: PipelineHandler(manager),\n+\t dmaBufAllocator_(DmaBufAllocator::DmaBufAllocatorFlag::CmaHeap |\n+\t\t\t DmaBufAllocator::DmaBufAllocatorFlag::SystemHeap |\n+\t\t\t DmaBufAllocator::DmaBufAllocatorFlag::UDmaBuf)\n+{\n+}\n+\n+std::unique_ptr<CameraConfiguration>\n+PipelineHandlerVirtual::generateConfiguration(Camera *camera,\n+\t\t\t\t\t Span<const StreamRole> roles)\n+{\n+\tVirtualCameraData *data = cameraData(camera);\n+\tauto config =\n+\t\tstd::make_unique<VirtualCameraConfiguration>(data);\n+\n+\tif (roles.empty())\n+\t\treturn config;\n+\n+\tfor (const StreamRole role : roles) {\n+\t\tstd::map<PixelFormat, std::vector<SizeRange>> streamFormats;\n+\t\tPixelFormat pixelFormat = formats::NV12;\n+\t\tstreamFormats[pixelFormat] = { { data->minResolutionSize_, data->maxResolutionSize_ } };\n+\t\tStreamFormats formats(streamFormats);\n+\t\tStreamConfiguration cfg(formats);\n+\t\tcfg.pixelFormat = pixelFormat;\n+\t\tcfg.size = data->maxResolutionSize_;\n+\t\tcfg.bufferCount = VirtualCameraConfiguration::kBufferCount;\n+\n+\t\tswitch (role) {\n+\t\tcase StreamRole::StillCapture:\n+\t\tcase StreamRole::VideoRecording:\n+\t\tcase StreamRole::Viewfinder:\n+\t\t\tbreak;\n+\n+\t\tcase StreamRole::Raw:\n+\t\tdefault:\n+\t\t\tLOG(Virtual, Error)\n+\t\t\t\t<< \"Requested stream role not supported: \" << role;\n+\t\t\tconfig.reset();\n+\t\t\treturn config;\n+\t\t}\n+\n+\t\tconfig->addConfiguration(cfg);\n+\t}\n+\n+\tif (config->validate() == CameraConfiguration::Invalid)\n+\t\tconfig.reset();\n+\n+\treturn config;\n+}\n+\n+int PipelineHandlerVirtual::configure(Camera *camera,\n+\t\t\t\t CameraConfiguration *config)\n+{\n+\tVirtualCameraData *data = cameraData(camera);\n+\tfor (size_t i = 0; i < config->size(); ++i)\n+\t\tconfig->at(i).setStream(&data->streamConfigs_[i].stream);\n+\n+\treturn 0;\n+}\n+\n+int PipelineHandlerVirtual::exportFrameBuffers([[maybe_unused]] Camera *camera,\n+\t\t\t\t\t Stream *stream,\n+\t\t\t\t\t std::vector<std::unique_ptr<FrameBuffer>> *buffers)\n+{\n+\tif (!dmaBufAllocator_.isValid())\n+\t\treturn -ENOBUFS;\n+\n+\tconst StreamConfiguration &config = stream->configuration();\n+\n+\tauto info = PixelFormatInfo::info(config.pixelFormat);\n+\n+\tstd::vector<unsigned int> planeSizes;\n+\tfor (size_t i = 0; i < info.planes.size(); ++i)\n+\t\tplaneSizes.push_back(info.planeSize(config.size, i));\n+\n+\treturn dmaBufAllocator_.exportBuffers(config.bufferCount, planeSizes, buffers);\n+}\n+\n+int PipelineHandlerVirtual::start([[maybe_unused]] Camera *camera,\n+\t\t\t\t [[maybe_unused]] const ControlList *controls)\n+{\n+\treturn 0;\n+}\n+\n+void PipelineHandlerVirtual::stopDevice([[maybe_unused]] Camera *camera)\n+{\n+}\n+\n+int PipelineHandlerVirtual::queueRequestDevice([[maybe_unused]] Camera *camera,\n+\t\t\t\t\t Request *request)\n+{\n+\t/* \\todo Read from the virtual video if any. */\n+\tfor (auto it : request->buffers())\n+\t\tcompleteBuffer(request, it.second);\n+\n+\trequest->metadata().set(controls::SensorTimestamp, currentTimestamp());\n+\tcompleteRequest(request);\n+\n+\treturn 0;\n+}\n+\n+// static\n+bool PipelineHandlerVirtual::created_ = false;\n+\n+bool PipelineHandlerVirtual::match([[maybe_unused]] DeviceEnumerator *enumerator)\n+{\n+\tif (created_)\n+\t\treturn false;\n+\n+\tcreated_ = true;\n+\n+\t/* \\todo Add virtual cameras according to a config file. */\n+\n+\tstd::vector<VirtualCameraData::Resolution> supportedResolutions;\n+\tsupportedResolutions.resize(2);\n+\tsupportedResolutions[0] = { .size = Size(1920, 1080), .frameRates = { 30 } };\n+\tsupportedResolutions[1] = { .size = Size(1280, 720), .frameRates = { 30 } };\n+\n+\tstd::unique_ptr<VirtualCameraData> data =\n+\t\tstd::make_unique<VirtualCameraData>(this, supportedResolutions);\n+\n+\tdata->properties_.set(properties::Location, properties::CameraLocationFront);\n+\tdata->properties_.set(properties::Model, \"Virtual Video Device\");\n+\tdata->properties_.set(properties::PixelArrayActiveAreas, { Rectangle(Size(1920, 1080)) });\n+\n+\t/* \\todo Set FrameDurationLimits based on config. */\n+\tControlInfoMap::Map controls;\n+\tint64_t min_frame_duration = 33333, max_frame_duration = 33333;\n+\tcontrols[&controls::FrameDurationLimits] = ControlInfo(min_frame_duration, max_frame_duration);\n+\tdata->controlInfo_ = ControlInfoMap(std::move(controls), controls::controls);\n+\n+\t/* Create and register the camera. */\n+\tstd::set<Stream *> streams;\n+\tfor (auto &streamConfig : data->streamConfigs_)\n+\t\tstreams.insert(&streamConfig.stream);\n+\n+\tconst std::string id = \"Virtual0\";\n+\tstd::shared_ptr<Camera> camera = Camera::create(std::move(data), id, streams);\n+\tregisterCamera(std::move(camera));\n+\n+\treturn true;\n+}\n+\n+REGISTER_PIPELINE_HANDLER(PipelineHandlerVirtual, \"virtual\")\n+\n+} /* namespace libcamera */\ndiff --git a/src/libcamera/pipeline/virtual/virtual.h b/src/libcamera/pipeline/virtual/virtual.h\nnew file mode 100644\nindex 000000000..fb3dbcad3\n--- /dev/null\n+++ b/src/libcamera/pipeline/virtual/virtual.h\n@@ -0,0 +1,89 @@\n+/* SPDX-License-Identifier: LGPL-2.1-or-later */\n+/*\n+ * Copyright (C) 2024, Google Inc.\n+ *\n+ * virtual.h - Pipeline handler for virtual cameras\n+ */\n+\n+#pragma once\n+\n+#include <memory>\n+#include <vector>\n+\n+#include <libcamera/base/file.h>\n+\n+#include \"libcamera/internal/camera.h\"\n+#include \"libcamera/internal/dma_buf_allocator.h\"\n+#include \"libcamera/internal/pipeline_handler.h\"\n+\n+namespace libcamera {\n+\n+class VirtualCameraData : public Camera::Private\n+{\n+public:\n+\tconst static unsigned int kMaxStream = 1;\n+\n+\tstruct Resolution {\n+\t\tSize size;\n+\t\tstd::vector<int> frameRates;\n+\t};\n+\tstruct StreamConfig {\n+\t\tStream stream;\n+\t};\n+\n+\tVirtualCameraData(PipelineHandler *pipe,\n+\t\t\t std::vector<Resolution> supportedResolutions);\n+\n+\t~VirtualCameraData() = default;\n+\n+\tconst std::vector<Resolution> supportedResolutions_;\n+\tSize maxResolutionSize_;\n+\tSize minResolutionSize_;\n+\n+\tstd::vector<StreamConfig> streamConfigs_;\n+};\n+\n+class VirtualCameraConfiguration : public CameraConfiguration\n+{\n+public:\n+\tstatic constexpr unsigned int kBufferCount = 4;\n+\n+\tVirtualCameraConfiguration(VirtualCameraData *data);\n+\n+\tStatus validate() override;\n+\n+private:\n+\tconst VirtualCameraData *data_;\n+};\n+\n+class PipelineHandlerVirtual : public PipelineHandler\n+{\n+public:\n+\tPipelineHandlerVirtual(CameraManager *manager);\n+\n+\tstd::unique_ptr<CameraConfiguration> generateConfiguration(Camera *camera,\n+\t\t\t\t\t\t\t\t Span<const StreamRole> roles) override;\n+\tint configure(Camera *camera, CameraConfiguration *config) override;\n+\n+\tint exportFrameBuffers(Camera *camera, Stream *stream,\n+\t\t\t std::vector<std::unique_ptr<FrameBuffer>> *buffers) override;\n+\n+\tint start(Camera *camera, const ControlList *controls) override;\n+\tvoid stopDevice(Camera *camera) override;\n+\n+\tint queueRequestDevice(Camera *camera, Request *request) override;\n+\n+\tbool match(DeviceEnumerator *enumerator) override;\n+\n+private:\n+\tstatic bool created_;\n+\n+\tVirtualCameraData *cameraData(Camera *camera)\n+\t{\n+\t\treturn static_cast<VirtualCameraData *>(camera->_d());\n+\t}\n+\n+\tDmaBufAllocator dmaBufAllocator_;\n+};\n+\n+} /* namespace libcamera */\n", "prefixes": [ "v10", "3/7" ] }