WebAssembly | Research on WebAssembly | Binary Executable Format library

 by   sophoslabs Python Version: Current License: Apache-2.0

kandi X-RAY | WebAssembly Summary

kandi X-RAY | WebAssembly Summary

WebAssembly is a Python library typically used in Programming Style, Binary Executable Format applications. WebAssembly has no vulnerabilities, it has a Permissive License and it has low support. However WebAssembly has 1 bugs and it build file is not available. You can download it from GitHub.

This repository contains some tools developed to help analyzing WebAssembly format:.
Support
    Quality
      Security
        License
          Reuse

            kandi-support Support

              WebAssembly has a low active ecosystem.
              It has 36 star(s) with 10 fork(s). There are 7 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 3 open issues and 0 have been closed. On average issues are closed in 462 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of WebAssembly is current.

            kandi-Quality Quality

              WebAssembly has 1 bugs (0 blocker, 0 critical, 1 major, 0 minor) and 36 code smells.

            kandi-Security Security

              WebAssembly has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              WebAssembly code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              WebAssembly is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              WebAssembly releases are not available. You will need to build from source code and install.
              WebAssembly has no build file. You will be need to create the build yourself to build the component from source.
              WebAssembly saves you 475 person hours of effort in developing the same functionality from scratch.
              It has 1120 lines of code, 84 functions and 3 files.
              It has low code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed WebAssembly and discovered the below as its top functions. This is intended to give you an instant insight into WebAssembly implemented functionality, and help decide if they suit your requirements.
            • Notify an emu
            • Notify INI
            • Disassemble code blocks
            • Disassemble a block
            • Accept a WASM file
            • Get the branch table
            • Convert an integer value into a varint
            • Notify the output of an out operation
            • Get the data section of a code section
            • Load a wasm file
            • Parse the Wasm section
            • Parse a code section
            • Add a Wasm segment
            • Notify about AAN
            • Create an opcode
            • Get the next nb bytes
            Get all kandi verified functions for this library.

            WebAssembly Key Features

            No Key Features are available at this moment for WebAssembly.

            WebAssembly Examples and Code Snippets

            No Code Snippets are available at this moment for WebAssembly.

            Community Discussions

            QUESTION

            How can I make webpack embed my *.wasm for use in a web worker?
            Asked 2022-Mar-30 at 07:38

            I have some rust code that compiles to web assembly using wasm-pack and wasm-bindgen. I want to call into this code from a web worklet/worker. The entire app should eventually be just one single *.js file, with everything else inlined.

            This is what I imagine my build process to look like:

            1. Use wasm-pack to compile the rust code to *.wasm and *.js bindings (this step works just fine)
            2. Use webpack to build a self-contained *.js file that I can load as a worklet/worker. The *.wasm must be included in this file. (this step fails)
            3. Use webpack again to build my final app/package, inlining the worklet/worker file from step 2. (this step works just fine)

            My problem is in step 2: I can't make webpack inline the *.wasm into the worklet/worker file. I tried this in my webpack config:

            ...

            ANSWER

            Answered 2022-Mar-30 at 07:38
            The solution
            1. Build the wasm itself: cargo build --target=wasm32/unknown/unknown
            2. Build the JS-bindings: wasm-bindgen --out-dir=dist --target=web --omit-default-module-path my-wasm-package.wasm.
            3. Consume the wasm in your worklet script like this:

            Source https://stackoverflow.com/questions/70420273

            QUESTION

            Javascript: frame precise video stop
            Asked 2022-Jan-28 at 14:55

            I would like to be able to robustly stop a video when the video arrives on some specified frames in order to do oral presentations based on videos made with Blender, Manim...

            I'm aware of this question, but the problem is that the video does not stops exactly at the good frame. Sometimes it continues forward for one frame and when I force it to come back to the initial frame we see the video going backward, which is weird. Even worse, if the next frame is completely different (different background...) this will be very visible.

            To illustrate my issues, I created a demo project here (just click "next" and see that when the video stops, sometimes it goes backward). The full code is here.

            The important part of the code I'm using is:

            ...

            ANSWER

            Answered 2022-Jan-21 at 19:18

            The video has frame rate of 25fps, and not 24fps:

            After putting the correct value it works ok: demo
            The VideoFrame api heavily relies on FPS provided by you. You can find FPS of your videos offline and send as metadata along with stop frames from server.

            The site videoplayer.handmadeproductions.de uses window.requestAnimationFrame() to get the callback.

            There is a new better alternative to requestAnimationFrame. The requestVideoFrameCallback(), allows us to do per-video-frame operations on video.
            The same functionality, you domed in OP, can be achieved like this:

            Source https://stackoverflow.com/questions/70613008

            QUESTION

            WASM from Rust not returning the expected types
            Asked 2022-Jan-18 at 09:48

            Hey @all I was playing with WebAssembly Studio and created an empty Rust project.

            In my Rust code, I'm returning the pointer and the length for my "Hello World" string. Compiling worked fine, but I was expecting the resulting WASM to have a function returning two i32. But I found a function taking one i32 and returning nothing.

            1. Why is the function not having the signature fn () -> (i32,i32) ?

            2. How am I supposed to extract the two values from the WASM module? (Using Rust-wasmtime)

            Below you can find the code snippets I'm talking about. Thanks in advance!

            ...

            ANSWER

            Answered 2022-Jan-18 at 09:48

            WebAssembly got the ability to return multiple values just recently. The compiler used doesn't seem to support this yet or doesn't use it for compatibility reasons, i.e. for runtimes that don't know this feature yet.

            Therefore, the compiler rewrites the code as follows:

            Source https://stackoverflow.com/questions/70641080

            QUESTION

            Blazor wasm localization showing just keys
            Asked 2022-Jan-07 at 13:21

            Followed Dynamically set the culture from the Accept-Language header to localize my blazor wasm app.

            WebUI.csproj

            ...

            ANSWER

            Answered 2022-Jan-06 at 10:47

            You only specified an English localization file: Shared.en.resx.

            When you specify @loc["countries"] in the component, it attempts to use the browser locale to translate the text "countries".

            The localizer looks for a resource file Shared.de.resx but that doesn't exist, so it defaults to the base translation, in this case English.

            Source https://stackoverflow.com/questions/70534325

            QUESTION

            How to list the symbols in this WASM module?
            Asked 2021-Dec-25 at 14:45

            I'm looking to do some in-browser video work using good-ol' FFmpeg and Rust. Simple examples, where the caller is interacting with the ffmpeg command-line abound. More complex examples are harder to find. In my case I wish to extract, process and rotate discrete frames.

            Clipchamp makes impressive use of WASM and FFmpeg, however the downloaded WASM file (there's only one) will not reveal itself to wasm-nm nor wasm-decompile, both complaining about the same opcode:

            Has anyone wisdom to share on how I can (1) introspect the WASM module in use or (2) more generally advise on how I can (using WASM and Rust, most likely) work with video files?

            ...

            ANSWER

            Answered 2021-Dec-25 at 14:45

            The WASM module uses SIMD instructions (prefixed with 0xfd, and also known as vector instructions), which were merged into the spec just last month. The latest release of wasm-decompile therefore doesn't have these enabled by default yet, but will in the next release. Meanwhile, you can enable them manually with the --enable-simd command line option. This invocation works for me with the latest release:

            Source https://stackoverflow.com/questions/70454530

            QUESTION

            Catch and display on the page any error in a .NET Maui Blazor project
            Asked 2021-Dec-07 at 14:22

            For testing purpose, I would like to 'catch' any error occuring in my app and displaying it on the page (not in the console). For that purpose I discovered the ErrorBoundary component in the .Net 6 framework.

            ErrorBoundaries doc from Microsoft

            At first, I successfully tested this component inside a Bazor WebAssembly project.

            Steps:

            • Create a newBlazor WebAssembly project
            • Create the component CustomErrorBoundary.razor (see code below)
            • In MainLayout.razor surround the @Body instruction with the component CustomErrorBoundary
            • In FetchData.razor throw an exception in the code (see below)

            CustomErrorBoundary

            ...

            ANSWER

            Answered 2021-Dec-07 at 14:22

            Trying to decipher the error, on first look, it seems that the type ErrorBoudary that you inherit needs a dependency that is not injected in your MAUI project.

            I have found a post that seems to explain your issue Githubmemory on this issue Basically, you need to implement the interface and then register that new class as an available service.

            Code of ErrorBoundary

            code of IErrorBoundaryLogger

            I would guess the Blazor Wasm implements this by default?

            Source https://stackoverflow.com/questions/70198098

            QUESTION

            emscripten: use globals in C
            Asked 2021-Dec-03 at 21:07

            The C source of my wasm module has to use global variables because it's using code that's common to the server which does so. But I get:

            ...

            ANSWER

            Answered 2021-Oct-10 at 21:23

            I don't have this software installed, but it seems that you have to remove the -s SIDE_MODULE flag, and instead of -o daft.wasm use -o daft.html. According to this the extension .wasm generates only .wasm file (as when -s STANDALONE_WASM is used). But you will need more.

            The problem is that at this time the WebAssembly needs JavaScript glue code to "make it work". When you use -o draf.html you will get .html, .js and .wasm files (so care not to overwrite some of your files). In your case that is a linking error. Check this for a very simple example.

            For short you should use just this emcc daft.c -s WASM=1 -o daft.html.

            Source https://stackoverflow.com/questions/69499343

            QUESTION

            Azure App Service .net6 Deploy - Error: EISDIR: illegal operation on a directory, open '/home/site/wwwroot/wwwroot/Identity/lib/bootstrap/LICENSE'
            Asked 2021-Nov-28 at 13:03

            I updated my Asp.net core Blazor WebAssembly app to .net 6. Everything is fine, but the deploy from github actions doesn't work and throws this error:

            ...

            ANSWER

            Answered 2021-Nov-15 at 05:26
            • On Linux, it's important that any bash deployment scripts that get run have Unix line endings (LF) and not Windows line endings (CRLF).

            • Kuduscript will generate scripts with platform-appropriate line endings, but if those scripts are modified, or if you provide your own custom deployment scripts, it's important to make sure that your editor doesn't change the line endings.

            • If something seems off with your deployment script, you can always use the Kudu console to delete the contents of /home/site/deployments/tools.

            • This is the directory where Kudu caches kuduscript-generated deployment scripts. On the next deployment, the script will be regenerated.

            • The error you're currently seeing is a Kudu issue with running node/npm for deployments.

            • The easiest and fastest resolution for what you are currently seeing is to specify engines.node in your package.json.

            Error: EISDIR: illegal operation on a directory, open '/home/site/wwwroot/wwwroot/Identity/lib/bootstrap/LICENSE'

            EISDIR stands for "Error, Is Directory". This means that NPM is trying to do something to a file but it is a directory. In your case, NPM is trying to "read" a file which is a directory. Since the operation cannot be done the error is thrown.

            Three things to make sure here

            1. Make sure the file exists. If it does not, you need to create it. (If NPM depends on any specific information in the file, you will need to have that information there).
            2. Make sure it is in fact a file and not a directory.
            3. It has the right permissions. You can change the file to have all permissions with "sudo chmod 777 FILE_NAME".

            Note: You are giving Read, Write and Execute permissions to every one on that file.

            Source https://stackoverflow.com/questions/69967124

            QUESTION

            How does Task.Yield work under the hood in Blazor WebAssembly?
            Asked 2021-Nov-28 at 11:17

            How does Task.Yield work under the hood in Mono/WASM runtime (which is used by Blazor WebAssembly)?

            To clarify, I believe I have a good understanding of how Task.Yield works in .NET Framework and .NET Core. Mono implementation doesn't look much different, in a nutshell, it comes down to this:

            ...

            ANSWER

            Answered 2021-Nov-28 at 11:17

            It’s setTimeout. There is considerable indirection between that and QueueUserWorkItem, but this is where it bottoms out.

            Most of the WebAssembly-specific machinery can be seen in PR 38029. The WebAssembly implementation of RequestWorkerThread calls a private method named QueueCallback, which is implemented in C code as mono_wasm_queue_tp_cb. This in invokes mono_threads_schedule_background_job, which in turn calls schedule_background_exec, which is implemented in TypeScript as:

            Source https://stackoverflow.com/questions/70091469

            QUESTION

            How do I return a string from a Rust function in Nodejs-WebAssembly using wasm bindgen?
            Asked 2021-Nov-23 at 12:50

            I'm new to Rust and WASM and struggling to get a first program running.

            ...

            ANSWER

            Answered 2021-Nov-23 at 12:35

            When using WebInstantiate in node without more boilerplate, just like you did, I got the same result (undefined). What works seamlessly in the browser doesn't work so well in node.

            But I got string exchange working when specifically building a node module with

            Source https://stackoverflow.com/questions/70079979

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install WebAssembly

            You can download it from GitHub.
            You can use WebAssembly like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.

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