Adds a --tone-test flag that bypasses all OpenAL/soundcard
initialization and instead:
- Generates a 440 Hz sine wave at 48kHz mono, encodes it via Opus,
and sends it to the Mumble server.
- Saves all incoming decoded audio to a raw PCM file (s16le,
stereo, 48kHz) specified by --tone-out (default: incoming.pcm).
Useful for end-to-end testing of the Opus encode/decode pipeline
and Mumble transport without requiring physical audio hardware.
Usage:
barnard --server HOST --tone-test --tone-out /tmp/in.pcm
ffplay -f s16le -ar 48000 -ac 2 incoming.pcm
Brandon McGinty (chatgpt)