v4l2loopback
cargo-asm
v4l2loopback | cargo-asm | |
---|---|---|
28 | 13 | |
3,537 | 1,131 | |
- | - | |
8.2 | 0.0 | |
21 days ago | 2 months ago | |
C | Rust | |
GNU General Public License v3.0 only | GNU General Public License v3.0 or later |
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For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
v4l2loopback
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Installing v4l2loopback in asahi-linux edge kernel
I am relatively new to linux, so pardon if this is a newbie question. I want to install the v4l2loopback module to 6.3.0-asahi-8-1-edge-ARCH. When I manually compile from https://github.com/umlaeute/v4l2loopback, and attempt to install, I obtain a vermagic and kernel version mismatch. Running modinfo:
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Is there a way (plugin or something?) to output the gcode viewer to an rtsp stream?
If you want to stream your webcam as an H264 encoded rtsp stream, it can be done with either rtsp-simple-server or V4l2rtspserver And it is possible to stream a linux desktop (and any program that might be open, like your web browser with the gcode viewer running on it) with the V4l2Loopback device and either of the two prgrams above. It is quite an involved process, but it is do-able.
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VToonify: Controllable High-Resolution Portrait Video Style Transfer
https://github.com/umlaeute/v4l2loopback
Effectively these let an app (eg some VToonify tool) generate content that from the perspective of your live streaming app look like they are from a webcam
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create a live webcam stream, that can be shared
note: want to get extra fancy and use random sources or have multiple streams use a single webcam source?? check into v4l2loopback -- https://github.com/umlaeute/v4l2loopback
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[HELP] I would like to know if you can create a virtual camera on Android.
https://www.youtube.com/watch?v=E89XQXrA_tI (which uses this)
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Fake Cam doesn't work
I'm trying to install Linux-Fake-Background-Webcam, which in turn requires 4l2loopback. Following the 4l2loopback manual, I try the following command to install it:
- Using a Canon EOS camera as a webcam in Debian
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Using Sony camera (a6500) as a webcam in Ubuntu 20.04 - Working fine
Download the last version bash wget https://github.com/umlaeute/v4l2loopback/archive/refs/tags/v0.12.5.tar.gz
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Is it possible for Linux mint to use an Android (11) as a webcam?
scrcpy and v4l2loopback works well
- v4l2loopback not working on other kernels
cargo-asm
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Performance difference between obj.function(...) and function(obj, ...) ?
cargo asm might be useful here (if you can't use godbolt).
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Is there a simple way to borrow the value of an Option without using a match statement?
They should be inlined in release mode. You'd have to verify by checking the assembly, though, which could be done directly in the Rust playground or with a tool like cargo-asm.
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Hey Rustaceans! Got a question? Ask here (4/2023)!
You can use cargo asm - not sure if you can integrate it with VSCode, but even from a terminal it's a pretty convenient tool.
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How does rust optimize this code to increase the performance so drastically?
There's probably a built-in one somewhere, but I suspect it'd be easier just to install https://github.com/gnzlbg/cargo-asm
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Is there a library to display source with annotations?
I don't know if there's a way to do a side by side comparison but cargo-asm uses the source mapping information from rustc to annotate chunks of assembly with it's respective rust code, though it's an imperfect process.
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Hey Rustaceans! Got a question? Ask here! (25/2022)!
After that you would need some tools to help figure out how to achieve improvements. That will depend on your system and personal preferences. As the other commenter suggested, perf is a good choice on linux. I personally like to look at the generated assembly, using either cargo asm, godbolt, or just rust playground.
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New crate announcement cargo-show-asm
Doesn't this already exist? https://github.com/gnzlbg/cargo-asm
- on the fly disassembler for Rust symbols
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Writing the fastest GBDT libary in Rust
From the flamegraph, we knew which function was taking the majority of the time, which we briefly described above. We started by looking at the assembly code it generated to see if there were any opportunities to make it faster. We did this with cargo-asm.
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How can I profile this type of slowdown?
You're best bet at the moment is probably using cargo-asm to inspect the function assembly to see when it is performing the correct TCO.
What are some alternatives?
akvcam - akvcam, virtual camera for Linux
rust - Empowering everyone to build reliable and efficient software.
pyvirtualcam - 🎥 Send frames to a virtual camera from Python
cargo-show-asm - cargo subcommand showing the assembly, LLVM-IR and MIR generated for Rust code
obs-v4l2sink - obs studio output plugin for Video4Linux2 device
multitarget-issue
BlackHole - BlackHole is a modern macOS audio loopback driver that allows applications to pass audio to other applications with zero additional latency.
safe_arch - Exposes arch-specific intrinsics as safe function (via cfg).
xdg-desktop-portal-wlr - xdg-desktop-portal backend for wlroots
wide - A crate to help you go wide. By which I mean use SIMD stuff.
stateright - A model checker for implementing distributed systems.