Vendored fork: discord-ext-voice_recv 0.5.3a+echo.dave1
Patches the receive pipeline to handle Discord's mandatory DAVE E2E
encryption on voice gateway v=8. Without this, opus_decode raised
"corrupted stream" on every received packet in a DAVE-active room and
voice-to-voice never connected.
DAVE patch (vendor/discord-ext-voice-recv/reader.py):
- `_maybe_dave_decrypt(rtp_packet)`: gate mirrors discord.py 2.7.1
`voice_state.can_encrypt`. Uses davey's `can_passthrough(user_id)` to
branch — peers in passthrough send transport-only packets that pass
through verbatim; peers in DAVE epoch go through `davey.decrypt`.
- Hooked in `callback()` between transport decrypt and feed_rtp;
drops on decrypt failure without killing the reader thread.
- Bumps __version__ to '0.5.3a+echo.dave1' (PEP 440 local segment) so a
contract test can fail fast on accidental upstream-sync overwrite.
Pipeline fixes uncovered while testing DAVE end-to-end:
- src/voice/pipeline.py: silero-vad v6+ requires exactly 512 samples per
call at 16kHz; our 100ms window (1600 samples) was silently raising
ValueError → VAD always returned False → STT never fired. Slice the
window into 512-sample chunks. Bump whisper beam_size 1→5 and add a
Romanian `initial_prompt` — transcriptions go from "Eco salt." gibberish
to "Echo, salutare, te rog spune-mi cât este ora."
- src/voice/tts_stream.py: EchoStreamingAudioSource.read() returns a 20ms
silence frame instead of b'' on empty queue. Empty return is treated
by Discord as end-of-stream and kills the player, so any TTS pushed
later would be silently discarded.
- src/adapters/discord_voice.py: actually attach EchoStreamingAudioSource
to the voice client after the wakeup beep (chained via `after=`),
which was missing entirely — TTS frames had no consumer.
Tests:
- tests/test_voice_recv_dave.py: 11 unit + callback integration tests
covering bypass paths, can_passthrough gate, decrypt error handling.
- tests/test_voice_adapter_contract.py: +test_voice_recv_fork_version
and +test_voice_connection_state_has_dave_attrs guards against
upstream drift on either side.
Config:
- config.json: voice.allowed_user_ids whitelist for Marius's user id.
Status: voice-to-voice loop closes end-to-end (DAVE → VAD → Whisper →
Claude → Supertonic → audio out). Latency is ~8-13s per turn, which is
out of scope for this commit — see TODOS.md for the real-time UX
follow-up plan.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
