Talon cccf085a87 fix(audio): stereo screen-audio loopback capture on Windows
start_loopback_capture hardcoded channels=1, forcing miniaudio to downmix the system's stereo mix to mono before the encoder saw it -- on_capture_frame then upmixed L=R to produce fake stereo. Now the loopback device opens in the channel's mode (stereo when the channel is stereo), CaptureCallback carries an explicit channels param so the encoder gets real interleaved L/R, and a mono fallback covers unusual render endpoints. New test_loopback_stereo_capture asserts L!=R end-to-end; 18/18 ctest green.
2026-06-17 23:27:59 +02:00
2026-06-17 00:52:02 +02:00

VoiceCat

Self-hosted, native voice & text chat in the spirit of classic TeamSpeak / Mumble — channel-based voice, channel + private text, one server you run yourself. Plain TCP (control) and UDP (media), no WebRTC. Encrypted by default. A shared C++ core (libvoicecat) drives native clients (Swift on macOS/iOS, C# on Windows) and the server.

Status: pre-implementation. The design is complete in docs/. The code is an M0 skeleton — it compiles and links, but every subsystem is a stub. See AGENTS.md to start building, and docs/roadmap.md for the milestones.

Read the design first

The docs/ folder is the source of truth. Start at docs/README.md, then architectureprotocolvoicesecuritytech-stackdeploymentroadmap.

Build the skeleton (no dependencies needed yet)

The M0 skeleton builds with just a C++20 compiler + CMake + Ninja — no vcpkg, no third-party libraries, because every subsystem is currently a stub.

cmake --preset dev
cmake --build --preset dev
ctest --preset dev            # runs the smoke test (links the core, calls the C ABI)

Artifacts land in build/dev/bin/ (voicecat-server, vccli).

When you start implementing a subsystem that needs real libraries, build with vcpkg deps:

# one-time: git clone https://github.com/microsoft/vcpkg && ./vcpkg/bootstrap-vcpkg.sh
export VCPKG_ROOT=/path/to/vcpkg            # set VCPKG_ROOT (works on Linux/macOS/Windows)
cmake --preset server-release               # auto-installs deps from vcpkg.json
cmake --build --preset server-release

Layout

docs/         design spec (read this)
core/         libvoicecat — the shared C++ core
  include/    voicecat.h  (the C ABI all clients call)
  proto/      voicecat.proto  (control-plane wire format, source of truth)
  src/        net/ crypto/ codec/ protocol/ session/ audio/  (stubs today)
server/       voicecat-server (headless; links the core)
tools/vccli/  headless test client — drives the protocol from M1 on
clients/      apple/ (Swift, M4)   windows/ (C#, M4)   — placeholders for now
tests/        CTest targets

License

Permissive-only dependencies (no GPL/LGPL) so the project can be redistributed freely, including closed-source. Project license: TBD (see docs/tech-stack.md §5).

Description
Native voice chat server and client
Readme 12 MiB
Languages
C++ 43.9%
Swift 30.6%
C# 17.5%
Shell 3.6%
CMake 2.1%
Other 2.3%