Flight

Standalone, pure Swift Discord voice library

The smoothest way to fly audio into Discord

Features

• Voice Gateway
  • Seamless Connect / Disconnect
  • Auto-Reconnecting & Resumes
  • Invisible DAVE (End-to-End Encryption) Support
  • Granular State Tracking
• Playback
  • Play, Pause, Resume, Stop
  • Real-time Volume Control
  • Dynamic AudioMixer for playing multiple tracks simultaneously
  • Track Queueing (QueueManager)
• Audio Pipeline
  • Opus Encoding / Decoding
  • Smart Jitter Buffering (Sequence Sorting, PLC triggering)
  • Strict Continuous Clock Frame Scheduling (20ms)
• Events
  • trackStarted & trackFinished
  • onUserConnect & onUserDisconnect
  • Receive Voice Audio (onAudioReceived)

Sources

• FFmpeg (FFmpegSource)
  • Supports local files, HTTP streams, and everything FFmpeg can parse
• Youtube / SoundCloud (FFmpegSource via yt-dlp)
  • Supported automatically via ytsearch: and scsearch: queries
• Raw PCM (AudioMixer / Custom Sources)
  • Full support for writing your own custom AudioSource generator
• DCA / Pre-encoded Opus (OpusSource)
  • Bypasses CPU-heavy encoding entirely for pre-processed .dca files

Documentation

• Comprehensive documentation is available in the Book directory. Check out the Installation Guide to get started!

Installation

• Keep in mind that Flight is heavily in active development. For issues, please open an issue in the Issues Tab.
• Flight is distributed via the Swift Package Manager. Just drop this in your Package.swift:

dependencies: [
    .package(url: "https://github.com/debaucheryparty/Flight.git", branch: "main")
]

• Note: You must enable C++ Interoperability (.interoperabilityMode(.Cxx)) on your target to use Flight's encryption suite smoothly.

Contributing

• The dev environment used in this project is:
  • macOS / Linux
  • Swift toolchain: Swift 6.0+
  • System Dependencies: ffmpeg, yt-dlp
• This should enable you to fork, compile, and test the project before opening a PR.

If you need help or ask for help, feel free to open a Discussion on GitHub or reach out to the maintainers!