Implementation of the client-side of the Snapcast protocol (snapclient).
The player works as a proof of concept, though it sometimes crashes when using the ALSA backend and adjusting the latency.
Only PCM/Flac/Opus are implemented, and only File/Pulse/Alsa/Tcp work for output devices.
The Flac codec has slight clipping and I don't know why.
To use the TCP module, (or to avoid having to link to libpulse), you can enable the 'simple protocol' module:
pactl load-module module-simple-protocol-tcp rate=48000 format=s16le channels=2 playback=true port=12345 listen=127.0.0.1
For Coreelec, bash build.sh will run the build process in a 32-bit Docker container.
This implementation behaves very similarly as the official one in regards to latency; measured with the scope and an 'audio/video sync test' playback:
Measurement notes:
- Tests on the ALSA back-end
- Yellow = this repo
- Cyan = official snapclient
- Blue plays via USB-C -> Screen -> Audio out
- Yellow plays via the Audio out port on my computer
It seems like this implementation is ~8ms lower latency, compared to the official one. I'm not sure why, as it should compensate for audio buffer size. I kinda hope it's due to the audio cards.
0ms added latency on the rs implementation:
5ms added latency on the rs implementation:
8ms added latency on the rs implementation:
