Moonmic

Moonmic sends microphone audio from a Moonlight client to a host over UDP. The client library captures and encodes audio; moonmic-host receives it and writes it to a virtual microphone.

Components

• moonmic: static client library for PS Vita, Windows, and Linux.
• moonmic-host: Windows and Linux receiver with GUI and console modes.
• moonmic-guardian: Windows watchdog that restores the previous microphone if the host exits unexpectedly.

The default UDP port is 48100. Audio is sent as Opus or signed 16-bit PCM. Protocol declarations shared by clients and the host are in moonmic_protocol.h.

Layout

codec/       Client codecs
include/     Public client and protocol headers
network/     Client transport
platform/    Client platform implementations
src/         Client implementation and private headers
host/        Host application, resources, and virtual audio drivers

Dependencies used by the host are Git submodules under host/third_party.

Client build

cmake -S . -B build -DBUILD_CLIENT=ON
cmake --build build --target moonmic

The client requires Opus and the platform audio API. PS Vita builds also require VitaSDK. A parent CMake project can use:

add_subdirectory(third_party/moonmic)
target_link_libraries(your_target PRIVATE moonmic::moonmic)

See INTEGRATION.md for the client API and host/README.md for host setup.

Host packages

The host GUI needs curl and SpeexDSP at runtime; both build from submodules, nothing to install by hand.

The manual Create release GitHub Actions workflow reads VERSION, builds the Windows and Linux hosts, and publishes:

• moonmic-host-<version>-windows-x86_64.zip
• moonmic-host-<version>-linux-x86_64.tar.gz

Contributing

See CONTRIBUTING.md for contribution and validation guidance.

License

Moonmic's own source is distributed under the terms in LICENSE. Bundled drivers and submodules retain the terms listed in THIRD_PARTY_NOTICES.md.

Credits

• Valve Corporation — Steam Streaming Microphone driver
• VB-Audio Software — VB-CABLE driver
• Xiph.Org — Opus and SpeexDSP
• Dear ImGui and GLFW — host interface
• AorsiniYT — Moonmic and vita-moonlight integration