* Fix Smallest AI TTS WebSocket endpoint URL to match API documentation
Update base URL from waves-api.smallest.ai to api.smallest.ai and
fix path prefix from /api/v1/ to /waves/v1/ per the v4.0.0 docs.
* Update keepalive using silent space message instead of unsupported flush
Some TTS providers (e.g. Inworld) return verbatim tokens where spaces and
punctuation are already embedded in the token text. When downstream consumers
join these tokens with an extra space they produce "hello , world" instead of
"hello, world".
Add an opt-in `includes_inter_frame_spaces: bool = False` parameter to
`add_word_timestamps` / `_add_word_timestamps`. The flag is threaded through
`_WordTimestampEntry` and stamped onto every emitted `TTSTextFrame`.
Defaults to `False` — no behaviour change for existing services.
`InworldTTSService` passes `includes_inter_frame_spaces=True` and stops
pre-processing tokens in `_calculate_word_times`, returning them verbatim.
Tests added to `test_tts_frame_ordering.py` covering both HTTP and WebSocket
delivery paths: verbatim text preservation, PTS ordering, text-before-audio
ordering, and the Inworld punctuation-token scenario.
Made-with: Cursor
- Fall back to Language.EN in _primary_detected_language when model is
flux-general-en, preserving prior behavior on the default model.
- Standardize example on DeepgramFluxSTTService.Settings and drop the
now-redundant DeepgramFluxSTTSettings import.
- Narrow the changed-behavior changelog to reflect that flux-general-en
frames still carry Language.EN.
Add changelog entries for the pyright introduction and the
LiveKitRunnerArguments.token signature tightening. Restore the
indented multi-line format for the WhatsApp missing-env error,
now listing only the vars that are actually missing.
SentryMetrics.stop_ttfb_metrics and stop_processing_metrics called the
base FrameProcessorMetrics implementation but discarded its return
value (implicit `return None`). FrameProcessorMetrics.stop_ttfb_metrics
/ stop_processing_metrics build and return a MetricsFrame, which
FrameProcessor.stop_ttfb_metrics / stop_processing_metrics then pushes
downstream so observers (e.g. UserBotLatencyObserver,
MetricsLogObserver) can see TTFB / processing metrics.
Because SentryMetrics returned None, the FrameProcessor never pushed
the MetricsFrame, so any pipeline using metrics=SentryMetrics() on STT
/ LLM / TTS services silently lost all downstream TTFB and processing
MetricsFrames. The metrics were still calculated and logged
internally, and Sentry transactions still finished correctly, but
observers never saw them.
Forward the MetricsFrame returned by the base class so FrameProcessor
can push it into the pipeline.
The single-key `button` field on `OutputDTMFFrame` and
`OutputDTMFUrgentFrame` is kept as a first-class ergonomic shortcut
for the common single-keypress case, equivalent to
`buttons=[button]`. `buttons` takes precedence when both are set.
Replaces the string-based `tones` field with a type-safe
`buttons: list[KeypadEntry]` on `OutputDTMFFrame` and
`OutputDTMFUrgentFrame`, matching the existing singular `button`
field on `InputDTMFFrame`. A `from_string` classmethod builds the
list from a dial string like `"123#"` (invalid characters raise
ValueError from the `KeypadEntry` constructor).
The base output audio fallback now iterates `frame.buttons`
directly, LiveKit sends `frame.buttons[0].value`, and the Daily
transport joins the button values into the single string Daily's
`send_dtmf` expects.
Introduces a new `tones` field on `OutputDTMFFrame` and
`OutputDTMFUrgentFrame` for sending multi-digit DTMF sequences and
deprecates the existing single-key `button` field. When only `button`
is set, it is used as a single-character `tones` string for backward
compatibility.
`DTMFFrame` is kept as an empty marker class so both input and output
DTMF frames can still be identified via isinstance. `InputDTMFFrame`
keeps its required `button` field (single keypress semantics).
The Daily-specific `DailyOutputDTMFFrame` and
`DailyOutputDTMFUrgentFrame` frames no longer need to override
`button` and simply add `session_id` and `digit_duration_ms`, which
are forwarded to Daily's `send_dtmf` as `sessionId` and
`digitDurationMs`.
The base output audio fallback now iterates `tones` and generates a
tone per character; LiveKit's native DTMF path sends `tones[0]` since
its API is single-tone.
Introduces Daily-specific DTMF output frames that carry explicit
`tones`, `session_id` and `digit_duration_ms` fields, forwarded to
Daily's `send_dtmf` as `tones`, `sessionId` and `digitDurationMs`.
The inherited `button` and `transport_destination` fields are
ignored for these frames in the Daily transport.
Replaces the per-frame asyncio.Event signaling with a monotonic
timestamp updated on each audio frame. The handler sleeps until the
next deadline (last_audio_time + timeout), recomputing on each wake-up
to account for audio arriving during sleep.
This avoids waking the handler on every audio frame (~50/s at 20ms
chunks), and guarantees detection latency is bounded by timeout rather
than 2 * timeout.
Also renames audio_starvation_timeout to audio_idle_timeout and
associated identifiers for consistency with existing pipecat naming
(user_idle_timeout, etc.).
