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{ "id": 21209, "url": "https://patchwork.libcamera.org/api/patches/21209/?format=api", "web_url": "https://patchwork.libcamera.org/patch/21209/", "project": { "id": 1, "url": "https://patchwork.libcamera.org/api/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": "<20240910044834.2477701-4-chenghaoyang@google.com>", "date": "2024-09-10T04:40:16", "name": "[v12,3/7] libcamera: virtual: Add VirtualPipelineHandler", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": false, "hash": "8a522d308e3bafad6192398b412b2c9635038e16", "submitter": { "id": 117, "url": "https://patchwork.libcamera.org/api/people/117/?format=api", "name": "Cheng-Hao Yang", "email": "chenghaoyang@chromium.org" }, "delegate": null, "mbox": "https://patchwork.libcamera.org/patch/21209/mbox/", "series": [ { "id": 4572, "url": "https://patchwork.libcamera.org/api/series/4572/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=4572", "date": "2024-09-10T04:40:13", "name": "Add VirtualPipelineHandler", "version": 12, "mbox": "https://patchwork.libcamera.org/series/4572/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/patches/21209/comments/", "check": "pending", "checks": "https://patchwork.libcamera.org/api/patches/21209/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 34B4CC324C\n\tfor <parsemail@patchwork.libcamera.org>;\n\tTue, 10 Sep 2024 04:48:53 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 6DA63634F7;\n\tTue, 10 Sep 2024 06:48:52 +0200 (CEST)", "from mail-pf1-x42f.google.com (mail-pf1-x42f.google.com\n\t[IPv6:2607:f8b0:4864:20::42f])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 54CC6634FF\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tTue, 10 Sep 2024 06:48:46 +0200 (CEST)", "by mail-pf1-x42f.google.com with SMTP id\n\td2e1a72fcca58-718d79fb6f7so300591b3a.3\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tMon, 09 Sep 2024 21:48:46 -0700 (PDT)", "from chenghaoyang-low.c.googlers.com.com\n\t(0.223.81.34.bc.googleusercontent.com. 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\n\tMon, 09 Sep 2024 21:48:43 -0700 (PDT)", "From": "Harvey Yang <chenghaoyang@chromium.org>", "X-Google-Original-From": "Harvey Yang <chenghaoyang@google.com>", "To": "libcamera-devel@lists.libcamera.org", "Cc": "Harvey Yang <chenghaoyang@chromium.org>,\n\tJacopo Mondi <jacopo.mondi@ideasonboard.com>", "Subject": "[PATCH v12 3/7] libcamera: virtual: Add VirtualPipelineHandler", "Date": "Tue, 10 Sep 2024 04:40:16 +0000", "Message-ID": "<20240910044834.2477701-4-chenghaoyang@google.com>", "X-Mailer": "git-send-email 2.46.0.598.g6f2099f65c-goog", "In-Reply-To": "<20240910044834.2477701-1-chenghaoyang@google.com>", "References": "<20240910044834.2477701-1-chenghaoyang@google.com>", "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": "From: Harvey Yang <chenghaoyang@chromium.org>\n\nAdd 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>\nReviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>\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 | 309 +++++++++++++++++++++\n src/libcamera/pipeline/virtual/virtual.h | 44 +++\n 5 files changed, 361 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 432ae133..ff9a70cf 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 7aa41249..c91cd241 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 00000000..ada1b335\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 00000000..56e05528\n--- /dev/null\n+++ b/src/libcamera/pipeline/virtual/virtual.cpp\n@@ -0,0 +1,309 @@\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 <chrono>\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/dma_buf_allocator.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+\tconst auto now = std::chrono::steady_clock::now();\n+\tauto nsecs = std::chrono::duration_cast<std::chrono::nanoseconds>(\n+\t\tnow.time_since_epoch());\n+\n+\treturn nsecs.count();\n+}\n+\n+} /* namespace */\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+/* static */\n+bool PipelineHandlerVirtual::created_ = false;\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\t/*\n+\t\t\t * \\todo It's a pipeline's decision to choose a\n+\t\t\t * resolution when the exact one is not supported.\n+\t\t\t * Defining the default logic in PipelineHandler to\n+\t\t\t * find the closest resolution would be nice.\n+\t\t\t */\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\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\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\tconfig->addConfiguration(cfg);\n+\t}\n+\n+\tASSERT(config->validate() != CameraConfiguration::Invalid);\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 (auto [i, c] : utils::enumerate(*config))\n+\t\tc.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+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 00000000..77823c41\n--- /dev/null\n+++ b/src/libcamera/pipeline/virtual/virtual.h\n@@ -0,0 +1,44 @@\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 <vector>\n+\n+#include <libcamera/base/file.h>\n+\n+#include \"libcamera/internal/camera.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+} /* namespace libcamera */\n", "prefixes": [ "v12", "3/7" ] }