Watermarker trait gains embed_with_message(audio, message) with a
default impl forwarding to embed (no-op for watermarkers without a
payload). AudioSealWatermarker overrides to use the requested message
instead of self.message; ResampledWatermarker forwards through the
resample dance.
TtsRequest gains optional watermark_message: Option<String> (decimal or
0xHEX). Useful for clawsample to tag each generation with a unique ID
(e.g. job_id mod 0x10000) for audit trails. When omitted, falls back
to the server-startup --audioseal-message default.
Verified end-to-end: override "0xBEEF" -> detect 0xBEEF (mean_presence
0.9995, 16/16 bits). Default fallback also decodes correctly.
Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>
Streams 16-bit little-endian PCM (24 kHz mono) as Mimi produces chunks.
Wraps Generator::generate_streaming via spawn_blocking + tokio::sync::mpsc
bridge into an axum Body::from_stream response.
Same JSON request format as /v1/tts; Content-Type is
audio/L16; rate=24000; channels=1 per RFC 2586.
First-byte (first audio chunk) latency on Metal: ~880 ms vs ~6 s wall
for the non-streaming /v1/tts path — 6.8x faster perceived UX, the
difference between "the app froze" and "the app started speaking."
Caveat: streaming endpoint does NOT apply post-processing or the inline
watermarker (those operate on the full utterance). For watermarked
output use /v1/tts. A chunked AudioSeal port is the natural follow-up
for streaming watermarking.
Adds futures-util as a dev-dependency for the Stream trait.
Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>
Extends the HTTP service with three new endpoints exposing AudioSeal
detection and WavLM-SV speaker scoring alongside the existing TTS:
GET /health
POST /v1/tts audio/wav (24 kHz mono)
POST /v1/detect [audio] JSON { mean_presence, message_hex }
POST /v1/speaker_embed [audio] JSON { embedding: [512 floats] }
POST /v1/speaker_compare [a+b] JSON { cosine }
Wires the inline watermarker into /v1/tts when --audioseal-* flags are
set: every TTS response is auto-watermarked through the
ResampledWatermarker (24 kHz <-> 16 kHz) adapter.
Verified end-to-end on Metal:
/health -> ok
/v1/tts -> 200, 145964 bytes (3s @ 24kHz)
/v1/detect -> mean_presence=0.998 on watermarked output
/v1/speaker_embed -> 512-d float vector
/v1/speaker_compare a==b -> cosine 1.0000001
axum gains the "multipart" feature for audio uploads.
Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>
