Lib webrtc. node-webrtc is a Node. cd webrtc-checkout. NET Core 3. lib库,另外还有可能会用到的. Oct 24, 2021 at 15:22. stamp. liburtc (μRTC or microRTC) is a minimal WebRTC library for embedded systems and microcontrollers. Just add this to your app level build. It will get the WebRTC repository's commit date, then check-out depot_tools to the commit having the closest date to WebRTC's, in order to ensure a high compatibility with gclient and other tools. A number of nonstandard APIs for testing are also included. A WebRTC library that makes it easy to embed scalable peer to peer communication into UI components. Python WebRTC. Sep 4, 2022 · For a Native Multi-platforms application, React-Native and Flutter propose a WebRTC library based on libWebRTC. webrtc-sdk:android:114. This repository contains unofficial distribution of WebRTC framework binaries for iOS and macOS. this is the message Mar 1, 2020 · I'm trying to build libwebrtc from source but I get errors when building. WebRTC provides a wrapper over the native C library of MixedReality-WebRTC, offering a more C# oriented API with familiar constructs such as Task and the async / await keywords. 08. On this page. Jun 26, 2023 · Which are best open-source WebRTC projects in C++? This list will help you: srs, mediasoup, flutter-webrtc, node-webrtc, webrtc-streamer, OvenMediaEngine, and wave-share. rs types compatible with Rust. json. 3: C# . js Native Addon that provides bindings to WebRTC M87. WinRTC enables real-time voice calling, video chat and data functionality (file transfer etc. Mar 13, 2020 · Gn is an extremely well documented tool, and the variable are usually equally well documented. RecordRTC is a server-less (entire client-side) JavaScript library can be used to record WebRTC audio/video media streams. To include this library in your project: implementation 'io. cpp) Nov 9, 2023 · WebRTC (Web Real-Time Communication) is a technology that enables Web applications and sites to capture and optionally stream audio and/or video media, as well as to exchange arbitrary data between browsers without requiring an intermediary. io libwebrtc. WebRTC has a preparation phase called "Signaling", during which the peers exchange data called "offers" and "answers" in order to gather necessary information to establish the connection. WebRTC. As we all know, Android Programs run into Dalvik Virtual Machine. a is not quite a stand-alone library unfortunately, at least not for branch-heads/72. Once you import this library, you can use all of the org. Then you need to figure out which system libs are necessary, there should be a list of them in build. recv(), but of course, this is bad design as a library. May 28, 2019 · Getting started with WebRTC. To be reusable, it should expose an injectable interface through which developers can implement arbitrary kinds of video transformation, encapsulating details such as VideoTransformTrack. It is a Boolean value that is true if WebRTC is Apr 14, 2022 · A Step by Step Guide to ** Compile and Build ** WebRTC Library for Android within 10 minutes. It supports cross-browser audio/video recording. enter image description here enter image description here. io. I didn't find jsoncpp. 04, and I used the Github repo ht The WebRTC Native APIs implementation is based on W3C’s WebRTC 1. I use this library for almost a year. However, considering the complexity of DTLS-SRTP, I thought of going the C++ API way of WebRTC. WebRTC has several JavaScript APIs — click the links to see demos. ) for mobile, desktop and web. For desktop development: Create a working directory, enter it, and run fetch webrtc: mkdir webrtc-checkout. 09. This library is hosted on Maven Central. Part 4: Sharing and sending the user’s display and changing tracks Link. Equipped with nothing but an ID, a peer can create a P2P data or media stream connection to a remote peer. webrtc-sdk:android Feb 12, 2021 · In tiny-streamlit-webrtc, the video transformation is hard-coded inside VideoTransformTrack. Corresponds to webrtc-sdk/webrtc@ 2ab452f. The code that implements WebRTC Native APIs (including the Stream and PeerConnection APIs) are available here. Creating a new application based on the WebRTC technologies can be overwhelming if you're unfamiliar with the APIs. WebRTC. – PaulMcKenzie. 0 library providing access to the same API as the native C library, exposed with familiar C# concepts such as async / await and Task. In the first one, run the signalling server: cd signalling WEBRTCSINK_SIGNALLING_SERVER_LOG=debug cargo run--bin gst-webrtc-signalling-server Apr 2, 2020 · AV1 in lib #webrtc – DONE. More than 100 million people use GitHub to discover, fork, and contribute to over 420 million projects. My build environment and the target are both ubuntu 18. Here are the most commonly used APIs in the WebRTC library, and you can reference the documentation below: WebRTC (Web Real-Time Communications) is a framework for real-time communication and in libp2p is used to establish browser-to-server and browser-to-browser connections between applications. WebRTC is an evolving technology for peer-to-peer communication on the web. Copy to clipboard. mm) file. Oct 19, 2022 · Google play have a new error/warning from the last days about the WebRTC library that I use. We need a folder to put all our stuff that is needed to compile and build WebRTC. WebRTC: C# 7. We also offer a shadowed version that moves the org. cargo build Usage. May 17, 2021 · WebRTC技術者 (C++) 必携リンク集 読者対象. So make sure you set export GO111MODULE=on, and explicitly specify /v4 (or an earlier version) when importing. The webrtc. See the version list below for details. Feb 21, 2022 · You shouldn't link intermediary libs like webrtc_multiopus. Our mission: To enable rich, high-quality RTC applications to be developed for the browser, mobile platforms, and IoT devices, and allow them all to communicate via a common set of protocols. WEBRTC_SUPPORT is a property of the ‘simple-peer’ library that shows whether or not WebRTC is supported in the current context. example-webrtc-applications contains more full featured examples that use 3rd party libraries. js developers. Oct 24, 2021 · but how to know what runtime library built with webrtc? -- Open the Visual Studio IDE to your project, go to the project settings and go to the C/C++ Code Generation and Runtime Library. 编译完成后,out\x64_debug\obj目录下会生成我们需要的webrtc. pristine:libjingle:11139@aar'), iOS thì xài pod "libjingle_peerconnection" các bạn chú ý đoạn code nhé, mình sẽ giải thích cụ thể Webrtc plug-in for videojs. webrtc. ninja文件, 发现webrtc. 0 tutorial for the Windows Desktop platform builds a console application which records audio and video. NOTICE: During your first sync, you’ll have to accept the license agreement of the Google Play Services SDK. Reload to refresh your session. For more information, you can check out the API references for WebRTC packages. 3 Android installation: npm install react-native-webrtc-usb-lib --save. MediaRecorder: record audio and video. You switched accounts on another tab or window. This repository demonstrates how this technology can be used to establish a peer connection from a Python instance. Reasons: Dashes aren't allowed in package names; Including the word "go" in a Go package name seems redundant; Just calling this repo webrtc wouldn't make sense either. 9. 0. For example, if you want to set the log level on this library's logger as WARNING, you can use the following code. Open the directory in your code editor and install these dependencies. setLevel (logging mkdir -p amazon-kinesis-video-streams-webrtc-sdk-c/build; cd amazon-kinesis-video-streams-webrtc-sdk-c/build; cmake . Kurento is a free, open-source WebRTC media server with a rich API set for building rich video applications for web, and mobile. ninja -C out/ios framework_objc. 0: Real-time Communication Between Browsers. The networking topology is based on a meshed network . . This allows web browsers to not only request resources from backend servers, but also real-time information from browsers of other users. The thing to keep in mind is the revision of libWebRTC used by your React-Native or Flutter version. Build sequence of program is based on below documents. WebRTC 1. libwebrtc for DataChannel. Starting to deviate from the golden path: the quest for GN GEN args . gn (winmm. LioWebRTC works standalone, but it is also compatible with React, Vue, Electron, etc. Microsoft. I’m a little bit late on this one, but in May 2019 Microsoft had its “Build” event, and disclosed the new iteration of their windows native webrtc Library. This allows forwarding H264 frames from V4L2 device or RTSP stream to WebRTC stream. WebRTC (Web Real-Time Communication) is a free and open-source project providing web browsers and mobile applications with real-time communication (RTC) via application programming interfaces (APIs). Membrane Framework. javascriptで動画通信プログラムを書く方ではなく、それを実現するWebRTCライブラリ(libwebrtc)の中身を理解する必要がある技術者向けリンク集です。 Nov 14, 2017 · 2 Answers. (This may be slightly contrary to Go convention, unless we consider the suffix to really begin at the last dash. This should result in a . While working with webrtc native development in Android, JNI Folder should include complete webrtc ndk stack for native development. Part 3: Creating the peers and sending/receiving media Link. lib, dxgi. 03] - 2023. Overview. PeerJS wraps the browser's WebRTC implementation to provide a complete, configurable, and easy-to-use peer-to-peer connection API. A java wrapper for WebRTC by JNI based on WebRTC M70, you could use this java lib to communicate with any other WebRTC client(eg: chrome browser, android, ios), stream from other client to java side isn't supported yet, if anyone would like to finish this part, your PR will been very expected. Furthermore, in a typical real-time application involving video and audio transmission, we have to depend heavily on C++ libraries, and we have to handle a lot of problems, including: Feb 28, 2024 · Most of our wrappers use the cxx. org. 60 auto-linking works out of the box, so there are no extra steps. g: multiple livekit::MediaStreamTrack pointing to the same webrtc::MediaStreamTrackInterface). lib, etc). A small-footprint WebRTC native C library for IP cameras and embedded systems. Starting with React Native 0. This is only build if pkg-config finds GStreamer is installed on your system. To associate your repository with the webrtc-javascript-library topic, visit your repo's landing page and select "manage topics. WebRTC APIs. This building program configured for only enable DataChannel without multimedia features. This is a Rust library which allows you to write a game server with browser based clients and UDP-like networking. A wrapper around PulseAudio's repackaging of WebRTC's AudioProcessing module. Feb 26, 2022 · Contents: Part 1: Introduction to WebRTC and creating the signaling server Link. 03. a using. Jan 8, 2024 · WebRTC does not need any external plugins to be installed in our browser as the solution comes bundled out-of-the-box with the browser. The purpose of this repository is making easy to use WebRTC native library by sharing pre-compiled libraries. Introducing rtc. You signed out in another tab or window. Finally, the install () command has a lot of signature, so let’s focus on those which would be of use for us. 编译会使用cang_cl进行编译,速度比较快。. It allows audio and video communication to work inside web pages by allowing direct peer-to-peer communication, eliminating the need to install Aug 9, 2022 · Run this command to create a folder and node project. PeerConnection and org. Versioning. 1'. io does not only target node. Also you will need to set your build settings to Java 8, because official WebRTC jar now uses static methods in EglBase interface. This library is based on the Complete WebRTC Native Stack for Android. It uses less CPU, but has less features (resize, codec, and bandwidth are disabled). This fully C# library can be used to add Real-time Communications, typically audio and video calls, to . Install npm install wrtc Installing from NPM downloads a prebuilt binary for your operating system × architecture. Dec 29, 2021 · In this article, you will find the best free, open-source WebRTC libraries and frameworks to build WebRTC-based projects. The WebRTC. js module in server side. Kurento is written with C/C++ and uses several GStreamer functions. Of course, browser vendors rarely use the EXACT same library and versions due to compatibility reasons, and differing release cycles. It illustrates where the SIPSorcery and associated libraries can help. gradle: android {. Louper. [114. This project aims for spec-compliance and is tested using the W3C's web-platform-tests project. js Native Addon that provides bindings to WebRTC M81. Obtain the access key and the secret key of the AWS account that you want to use for this demo. aar My app is still available but they ask to update the library, which usually means that they will block apps with this library it in the future. Support both WebRTC and plain RTP input and output. May 23, 2023 · There is 1 folder named jsoncpp (have 3 file . getLogger("streamlit_webrtc") through which you can control the logs from this library. Nov 24, 2022 · This repository contains the native WebRTC library used by most modern browsers (Chrome, Firefox, Opera, etc. Contribute to ant-media/videojs-webrtc-plugin development by creating an account on GitHub. It is lightweight, portable, and free . . js modules that simplify WebRTC development. NET applications. lib library file from webRTC so I downloaded jsoncpp library from jsoncpp homepage source code on GitHub but it didn't fix This library exposes are pure C API easily integrated into any C/C++ application. The diagram below is a high level overview of a Real-time audio and video call between Alice and Bob. See full list on webrtc. Native Development tool (NDK) allows users to execute some of the program using native code languages such as C/C++. The set of standards that comprise WebRTC makes it possible to share data and perform teleconferencing Feb 14, 2022 · In this lib all symbols are hidden by default rules in WebRTC build system, so you need to export yours: to do this mark your methods/classes with __attribute__((visibility("default"))) Solution 2 Another solution is to compile WebRTC without included compiler and std lib, and that might be tricky because it requires you to go deep into GN The PeerJS library. For example, here is Firefox's clone of libWebRTC on Github with their own modifications to the project. apt update && apt install -y git curl wget lsb-release transport:webrtc、rtmp、srt,webrtc is non-google lib。 live:rtmp、srt、webrtc、HLS、HTTP-FLV。 8bit recording:hh264, h265 mp4 and flv。 10bit recording:h265 mp4; screen sharing and control 实现了屏幕共享与控制。 a variety of processing of sound and images is realized 实现了声音和图像多种处理。 Nov 11, 2020 · With all that configuration done we can create a new peer connection by calling the NewPeerConnection function on the WebRTC API we just created. A sample client application is also provided. st_webrtc_logger = logging. org open source repository contains platform implementations for Windows, Mac, iOS and Android. ) with web browsers via WebRTC. This repository involves a Step by Step Guide to Compile and Build WebRTC Library for Android based on WebRTC Native Stack. #bash mkdir webrtc-react-video-chat && cd webrtc-react-video-chat npm init --y Code language: CSS (css) npm init --``y will generate a package. MixedReality. Try to make your own capturer, needs rtti, LiveKit. Jan 7, 2023 · aiortc is a library for Web Real-Time Communication (WebRTC) and Object Real-Time Communication (ORTC) in Python. Obviously you can change this directory. google-webrtc-1. Expose audio sample buffers for Android. framework that gets created by the build script has Objective-C header files. Introduction. It is possible to prevent this behavior by specifying the location to your own depot_tools repository by defining the DEPOT_TOOLS_PATH variable. framework bundle being generated in out/ios . Jan 10, 2021 · So you can get the logger instance with logging. Part 2: Understanding the MediaDevices API and getting access to the user’s media devices Link. Be careful to WebRTC for C# & C++/CLI. Options for the WebRTC stream name: WebRTC native code package can be found at: Webrtc Native Guide. aiortc is a library for Web Real-Time Communication (WebRTC) and Object Real-Time Communication (ORTC) in Python. The WinRTC project hosts everything needed to build apps with interoperable real time communications for modern Windows. lib by default now, reducing the link list to it and just a few satellites (like boringssl & protobuf_lite). My primary interest to decrypt the voip date, as asked in this question. 71. Supports both VoIP (get started) and WebRTC (get Sep 28, 2016 · However, the latest WebRTC (M58) seems to build a single webrtc. Jul 30, 2015 · Libraries can be installed in a flat directory structure, but headers need to follow a certain directory structure to be usable, so we will have to follow two different strategies there. 3) project (sample) find_package (LibWebRTC REQUIRED ) include ( ${LIBWEBRTC_USE_FILE} ) set (SOURCE_FILES main. It is built on top of asyncio, Python's standard asynchronous I/O framework. The package name is webrtc, even though the repo name is go-webrtc. Aug 5, 2014 · Would you be interested to answer this question: How to integrate part of WebRTC as a static / dynamic library with the existing C++ code?. NET development by creating an account on GitHub. Go Modules are mandatory for using Pion WebRTC. That library was created using browserify and lives in the dist directory of the rtc repository. This is where the media device library comes into play to read the video from the camera This hacks the stucture webrtc::VideoFrameBuffer storing data in a override of the i420 buffer. It is a building program of WebRTC native library from Chromium. Build Notes In order to build the native code, be sure to install the prerequisite software (follow the links): Running WebRTC Native Tests on an Android Device; Running WebRTC Instrumentation Tests on an Android Device; Prebuilt libraries. 14. There is a newer prerelease version of this package available. Are you using WebRTC SDK in your framework or app? Feel free to open a PR and add yourself! Contribute to webrtc-sdk/webrtc development by creating an account on GitHub. This is the third iteration, and it s remarkable in many ways, especially for Gaming and Hardware Acceleration, so let’s dig into the history 4 days ago · Make sure to install the development packages for some codec libraries beforehand, such as libx264, libvpx and libopusenc, exact names depend on your distribution. The . Media transport is optional Jan 14, 2021 · mediasoup and its client side libraries are designed to accomplish with the following goals: Be a SFU (Selective Forwarding Unit). The API closely follows its Javascript counterpart while using pythonic constructs: To learn more about aiortc please read the documentation. Still, 198 flags is a lot. Upgrade to WebRTC-SDK M114. It is very clear from the messages on discuss-webrtc that the compilation process behind chrome, electron and libwebrtc is more often than not too hard to understand, some extra time was spent to Jul 12, 2020 · I have built webrtc for linux and getting libwebrtc. Threadsafe methods use the const keyword so we Feb 5, 2024 · The Flutter project template adds it, so it may already be there. getUserMedia (): capture audio and video. It also provides a JavaScript library in the rtc module that can be used by any frontend application. Be a tiny JavaScript and C++ libraries in client side. lib, the only one you need to use is webrtc. add failure tolerance for framecryptor. github. obj) And 2 file: jsoncpp. PeerJS simplifies WebRTC peer-to-peer data, video, and audio calls. obj文件生成的:. - microsoft/winrtc v114. WebRTC is designed to work peer to peer, so users can connect by the most direct route possible. obj: json_reader. WebRTC was originally designed to make audio, video, and data communication between browsers user-friendly and easy to implement. For the past weeks, lots of work was done to make Av1 available in libwebrtc in an easy way. These are the steps that I followed: $ cd /home/user1 $ mkdir libwebrtc && cd libwebrtc $ fetch --nohooks webrtc $ Nov 23, 2023 · BASE=/webrtc. io is a collection of node. webrtc , avoiding any collisions with other WebRTC libraries: implementation 'io. How to use. VideoTrack. The target audience of this document are those who want to use WebRTC Native Jan 1, 2024 · webrtc-unreliable. framework. c) file. It is compatible with browsers Firefox, Chromium, and Safari, and other WebRTC libraries (see webrtc-echoes). Client apps need to traverse NAT gateways and firewalls, and peer-to-peer networking needs fallbacks in case direct connection fails. These libraries are compiled from the tip-of-tree and are meant for development purposes only. Examples provide code samples to show how to use webrtc-rs to build media and data channel applications. April 2, 2020 ~ agouaillard. WebRTC (Web Real-Time Communication) is a collection of communications protocols and application programming interfaces that enable real-time communication over peer-to-peer connections. Based on the results of my own projects, the libraries required are. This crate is not meant as a general purpose WebRTC data channel system, it is instead designed to be used as the bottom level UDP-like transport layer of a higher level protocol in an environment where UDP is WebRTC C++ library. However, WebRTC is built to cope with real-world networking. This can be done with ninja as follows, replacing ios with the actual location of your generated build files. Since version M80, Google has deprecated their mobile binary libraries distributions (Was officially using the GoogleWebRTC pod). We have provided an example of using GStreamer to capture/encode video, and then send via this library. obj, json_writer. Once you have compiled your shared library using ndk-build command. WebRTC is an open source project to enable realtime communication of audio, video and data in Web and native apps. In contrast to other WebRTC implementations, it aims to be nimble, with a small footprint, minimal dependencies, and simple The native libraries were build with WebRTC branch M99/4844. It requires a number of additional third-party dependencies, and you have to build with specific compiler / linker flags to make it all work. You cannot call Objective-C methods in a C source code (. Feb 12, 2021 · aiortc is a WebRTC library for Python. In this section we will show how to get started with the various APIs in the WebRTC standard, by explaining a number of common use cases and code snippets for solving those. This project is still in active and early development stage, please refer to the Roadmap to track the major milestones and releases. Developers choose an arbitrary method for Signaling, such as the HTTP req/res mechanism. Part 5: Data Channels basics Link. lib 链接了各个模块的. Open three terminals. Improve e2ee, add setSharedKey to KeyProvider. (e. webrtc package to livekit. Net Standard 2. Be a Node. So whatever you choose, you will have libWebRTC that comes with a full compatibility and level-grade with the browsers. 32006. Add scalabilityMode support for AV1/VP9. Before sending the offer to the ion-sfu server over Websockets we first need to add the video and audio stream. Requires NuGet 2. As most of our wrappers are stateless, we allow multiple instances of a specific wrapper to point to the same underlying webrtc pointer. rtc. gn gen out/Default --args=is_debug=false rtc_use_h264=true target_cpu="x64" target_os="linux" clang_use_chrome_plugins=false use_ghash=false symbol_level=2 use_custom_libcxx=false is_component_ffmpeg=true ffmpeg_branding="Chrome" rtc_include_tests=false rtc_build_examples=true rtc_build_tools=false use_rtti=true rtc_enable_protobuf Oct 14, 2018 · Deal with C++ standard implementation lib mismatch, Deal with missing preprocessor definitions (WEBRTC_WIN, WEBRTC_POSIX, ), Deal with missing JSON symbols, Eventually succeed in barely reproducing something that was already working. 1- Kurento. Có khá nhiều library WebRTC cho Android nhưng trong bài này thì mình sử dụng lib môn phái Pristine (compile 'io. RTCPeerConnection: stream audio and video between users. fetch --nohooks webrtc. Let's use the native WebRTC with strict compatibility and fully implemented stuff! This project follows the W3C specification with some modifications and additions to make it work better with Python applications, with useful APIs like programmatic audio and video. 查看out\x64_debug\obj目录下的webrtc. – monoceres Mar 18, 2017 at 22:36 The C# library Microsoft. The WebRTC initiative is a project supported by Google, Mozilla and Opera, amongst 编译命令:. Contribute to radioman/WebRtc. rs is a pure Rust implementation of WebRTC stack, which rewrites Pion stack in Rust. The WebRTC components have been optimized to best serve this purpose. example applications contains code samples of common things people build with Pion WebRTC. 5 or higher. 5735. ). on Ubuntu, run sudo apt-get install pkg-config cmake libcap2 libcap-dev. Be minimalist: just handle the media layer. Assets 3. It can be configured for scalability using partial mesh networks, making it possible to emit data to thousands of peers in a room, while only needing to be To build WebRTC for use in a native iOS app, it’s easiest to build WebRTC. 1. WebRtc Library is a secure, fast and highly performant developer toolkit enabling real-time voice calling, video chat and data functionality (file transfer etc. All of your modules should be using the same library. obj, json_value. Jul 26, 2020 · native libwebrtc for windows: WinRTC. recv() and Jul 24, 2020 · I met some issues when I wanted to build the peerconnection example with linking Webrtc as a static library. obj文件。. Getting the Code. OpenMomo は WebRTC Native Client Momo をオープンソースとして公開し継続的に開発を行っていくプロジェクトです。 ブラウザやスマートフォン以外からの WebRTC をいろいろな用途で使ってもらえればと思っています。 詳細については下記をご確認ください。 Jan 27, 2020 · In the release notes of WebRTC M80 (=the changes made to WebRTC in the upcoming Chrome 80), Google added an interesting deprecation announcement: Deprecating binary mobile libraries. ninja, jsoncpp. lib. Mar 5, 2023 · The Peer. ninja -C out/x64_debug. m) file or Objective C++ (. You signed in with another tab or window. WebRTC allows real-time data and media exchange between two devices through a Peer Connection (or RTCPeerConnection), a signaled peer-to-peer connection which can carry both Data Channels and media tracks. gclient sync. You'll need to consume it in an Objective-C (. lib, crypt32. This repository contains a collection of CMake scripts to help you embed Google's native WebRTC implementation inside your project as simple as this: cmake_minimum_required ( VERSION 3. Remove the --short options from the GN args <build_dir> --list command to get the description of each flag. This is a home page for WebRTC C++ library documentation. These are primarily utilized for automated testing. WebRTC C++ library. " GitHub is where people build software. getLogger ("streamlit_webrtc") st_webrtc_logger. WebRTC is a free, open project that enables web browsers with Real-Time Communications (RTC) capabilities via simple JavaScript APIs. Unity: C# 7. webrtc-audio-processing can remove echo from an audio input stream in the situation where a speaker is feeding back into a microphone, as well as noise-removal, auto-gain-control, voice-activity-detection, and more! 1. Run the following command to create a build directory in your downloaded WebRTC C SDK, and execute cmake from it: $ mkdir -p amazon-kinesis-video-streams-webrtc-sdk-c/build; cd Sep 5, 2017 · The library webrtc. It brings the power of WebRTC to modern Windows apps written in C#, C++ and VB. libwebrtc specific flags are usually prefixed by “rtc_”, so you could jut focussed on those. Make it easy, Make it simple webrtc-audio-processing. webrtc packge functions, such as org. The easiest way to get started is using the official prebuilt libraries available at JCenter. pg gp ur hc oq al rl df kb ng