gst-plugins-rs/README.md

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# gst-plugins-rs [![crates.io](https://img.shields.io/crates/v/gst-plugin.svg)](https://crates.io/crates/gst-plugin) [![pipeline status](https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/badges/main/pipeline.svg)](https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/commits/main)
Repository containing various [GStreamer](https://gstreamer.freedesktop.org/)
plugins and elements written in the [Rust programming
language](https://www.rust-lang.org/).
The plugins build upon the [GStreamer Rust bindings](https://gitlab.freedesktop.org/gstreamer/gstreamer-rs).
Check the README.md of that repository also for details about how to set-up
your development environment.
## Plugins
You will find the following plugins in this repository:
* `generic`
- `file`: A Rust implementation of the standard `filesrc` and `filesink` elements
- `sodium`: Elements to perform encryption and decryption using [libsodium](https://libsodium.org).
- `threadshare`: Some popular threaded elements reimplemented using common thread-sharing infrastructure.
* `net`
- `aws`: Various elements for Amazon AWS services using the [AWS SDK](https://awslabs.github.io/aws-sdk-rust/) library
- `s3src`/`s3sink`: A source and sink element to talk to the Amazon S3 object storage system.
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- `s3hlssink`: A sink element to store HLS streams on Amazon S3.
- `awstranscriber`: an element wrapping the AWS Transcriber service.
- `awstranscribeparse`: an element parsing the packets of the AWS Transcriber service.
- `hlssink3`: An element for generating MPEG-TS HLS streams.
- `ndi`: An [NDI](https://www.newtek.com/ndi/) plugin containing a source, sink and device provider.
- `onvif`: Various elements for parsing, RTP (de)payloading, overlaying of ONVIF timed metadata.
- `raptorq`: Encoder/decoder element for RaptorQ RTP FEC mechanism.
- `reqwest`: An HTTP source element based on the [reqwest](https://github.com/seanmonstar/reqwest) library.
- `rtp`:
- `rtpav1pay` / `rtpav1depay`: RTP (de)payloader for the AV1 video codec.
- `rtpgccbwe`: RTP bandwidth estimator based on the Google Congestion Control algorithm.
- `webrtc`: WebRTC elements, with batteries included Sink elements for specific signalling protocols.
- `webrtchttp`: Simple WebRTC HTTP elements (WHIP/WHEP).
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* `audio`
- `audiofx`: Elements to apply audio effects to a stream
- `rsaudioecho`: a simple echo/reverb filter.
- `audioloudnorm`: [audio normalization](http://k.ylo.ph/2016/04/04/loudnorm.html) filter.
- `audiornnoise`: Filter for [removing noise](https://jmvalin.ca/demo/rnnoise/).
- `ebur128level`: Filter for measuring audio loudness according to EBU R-128.
- `hrtfrender`: Filter for rendering audio according to a [head-related transfer
function](https://en.wikipedia.org/wiki/Head-related_transfer_function).
- `claxon`: A FLAC decoder based on the [Claxon](https://github.com/ruuda/claxon) library.
- `csound`: A plugin to implement audio effects using the [Csound](https://csound.com/) library.
- `lewton`: A Vorbis decoder based on the [lewton](https://github.com/RustAudio/lewton) library.
- `spotify`: A plugin to access content from [Spotify](https://www.spotify.com/) based on the [librespot](https://github.com/librespot-org/) library.
* `video`
- `cdg`: A parser and renderer for [CD+G karaoke data](https://docs.rs/cdg/0.1.0/cdg/).
- `closedcaption`: Plugin to deal with closed caption streams
- `ccdetect`: Detects if a stream contains active Closed Captions.
- `cea608overlay`: Overlay CEA-608 / EIA-608 closed captions over a
video stream.
- `cea608tojson`: Convert CEA-608 / EIA-608 closed captions to a JSON
stream.
- `cea608tott`: Convert CEA-608 / EIA-608 closed captions to timed text.
- `jsontovtt`: Convert JSON to timed text.
- `mccenc`: Convert CEA-608 / EIA-608 and CEA-708 / EIA-708 closed captions to the MCC format.
- `mccparse`: Parse CEA-608 / EIA-608 and CEA-708 / EIA-708 closed captions from the MCC format.
- `sccenc`: Convert CEA-608 / EIA-608 closed captions to the MCC format.
- `sccparse`: Parse CEA-608 / EIA-608 closed captions from the MCC format.
- `transcriberbin`: Convenience bin around transcriber elements like `aws_transcriber`.
- `tttocea608`: Convert timed text to CEA-608 / EIA-608 closed captions.
- `tttojson`: Convert timed text to JSON.
- `dav1d`: AV1 decoder based on the [dav1d](https://code.videolan.org/videolan/dav1d) library.
- `ffv1`: FFV1 decoder based on the [ffv1](https://github.com/rust-av/ffv1) library.
- `gif`: A GIF encoder based on the [gif](https://github.com/image-rs/image-gif) library.
- `gtk4`: A [GTK4](https://www.gtk.org) video sink that provides a `GdkPaintable` for UI integration.
- `hsv`: Plugin with various elements to work with video data in hue, saturation, value format
- `hsvdetector`: Mark pixels that are close to a configured color in HSV format.
- `hsvfilter`: Apply various transformations in the HSV colorspace.
- `png`: PNG encoder based on the [png](https://github.com/image-rs/image-png) library.
- `rav1e`: AV1 encoder based on the [rav1e](https://github.com/xiph/rav1e) library.
- `videofx`: Plugin with various video filters.
- `roundedcorners`: Element to make the corners of a video rounded via the alpha channel.
- `colordetect`: A pass-through filter able to detect the dominant color(s) on incoming frames, using [color-thief](https://github.com/RazrFalcon/color-thief-rs).
- `videocompare`: Compare similarity of video frames. The element can use different hashing algorithms like [Blockhash](https://github.com/commonsmachinery/blockhash-rfc), [DSSIM](https://kornel.ski/dssim), and others.
- `webp`: WebP decoder based on the [libwebp-sys-2](https://github.com/qnighy/libwebp-sys2-rs) library.
* `mux`
- `flavors`: FLV demuxer based on the [flavors](https://github.com/rust-av/flavors) library.
- `fmp4`: A fragmented MP4/ISOBMFF/CMAF muxer for generating e.g. DASH/HLS media fragments.
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- `mp4`: A non-fragmented MP4 muxer for generating MP4 files.
* `text`
- `ahead`: A plugin to display upcoming text buffers ahead.
- `json`: A plugin to convert a stream of JSON objects to a higher level wrapped NDJSON output.
- `regex`: A regular expression text filter plugin.
- `wrap`: A plugin to perform text wrapping with hyphenation.
* `utils`
- `fallbackswitch`:
- `fallbackswitch`: An element that allows falling back to different
sink pads after a timeout based on the sink pads' priorities.
- `fallbacksrc`: Element similar to `urisourcebin` that allows
configuring a fallback audio/video if there are problems with the main
source.
- `livesync`: Element to maintain a continuous live stream from a
potentially unstable source.
- `togglerecord`: Element to enable starting and stopping multiple streams together.
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- `tracers`: Plugin with multiple tracers:
- `buffer-lateness`: Records lateness of buffers and the reported
latency for each pad in a CSV file. Contains a script for
visualization.
- `pipeline-snapshot`: Creates a .dot file of all pipelines in the
application whenever requested.
- `queue-levels`: Records queue levels for each queue in a CSV file.
Contains a script for visualization.
- `uriplaylistbin`: Helper bin to gaplessly play a list of URIs.
## Building
gst-plugins-rs relies on [cargo-c](https://github.com/lu-zero/cargo-c/) to
generate shared and static C libraries. It can be installed using:
```
$ cargo install cargo-c
```
Then you can easily build and test a specific plugin:
```
$ cargo cbuild -p gst-plugin-cdg
$ GST_PLUGIN_PATH="target/x86_64-unknown-linux-gnu/debug:$GST_PLUGIN_PATH" gst-inspect-1.0 cdgdec
```
Replace `x86_64-unknown-linux-gnu` with your system's Rust target triple (`rustc -vV`).
The plugin can also be installed system-wide:
```
$ cargo cbuild -p gst-plugin-cdg --prefix=/usr
$ cargo cinstall -p gst-plugin-cdg --prefix=/usr
```
This will install the plugin to `/usr/lib/gstreamer-1.0`.
You can use `--libdir` to pass a custom `lib` directory
such as `/usr/lib/x86_64-linux-gnu` for example.
Note that you can also just use `cargo` directly to build Rust static libraries
and shared C libraries. `cargo-c` is mostly useful to build static C libraries
and generate `pkg-config` files.
In case cargo complains about dependency versions after a `git pull`, `cargo update` may
be able to resolve those.
## LICENSE
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gst-plugins-rs and all crates contained in here are licensed under one of the
following licenses
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* Mozilla Public License Version 2.0 ([LICENSE-MPL-2.0](LICENSE-MPL-2.0) or http://opensource.org/licenses/MPL-2.0)
* Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
* MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
* Lesser General Public License ([LICENSE-LGPLv2](LICENSE-LGPLv2)) version 2.1 or (at your option) any later version
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GStreamer itself is licensed under the Lesser General Public License version
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2.1 or (at your option) any later version: https://www.gnu.org/licenses/lgpl-2.1.html
## Contribution
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Any kinds of contributions are welcome as a merge request.
Unless you explicitly state otherwise, any contribution intentionally submitted
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for inclusion in gst-plugins-rs by you shall be licensed under the license of
the plugin it is added to.
For new plugins the MPL-2 license is preferred.