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BaseInputTransport: deprecate vad_analyzer

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This commit is contained in:
Aleix Conchillo Flaqué
2026-01-28 10:09:38 -08:00
parent 0857aa87be
commit b1ad4d5ab0
3 changed files with 130 additions and 74 deletions
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2
src/pipecat/audio/vad/vad_analyzer.py
View File

@@ -127,7 +127,7 @@ class VADAnalyzer(ABC):
pass
@abstractmethod
def voice_confidence(self, buffer) -> float:
def voice_confidence(self, buffer: bytes) -> float:
"""Calculate voice activity confidence for the given audio buffer.
Args:

197
src/pipecat/transports/base_input.py
View File

@@ -48,7 +48,7 @@ from pipecat.metrics.metrics import MetricsData
from pipecat.processors.frame_processor import FrameDirection, FrameProcessor
from pipecat.transports.base_transport import TransportParams
AUDIO_INPUT_TIMEOUT_SECS = 0.5
AUDIO_INPUT_TIMEOUT_SECS = 1.0
class BaseInputTransport(FrameProcessor):
@@ -144,6 +144,17 @@ class BaseInputTransport(FrameProcessor):
DeprecationWarning,
)
if self._params.vad_analyzer:
import warnings
with warnings.catch_warnings():
warnings.simplefilter("always")
warnings.warn(
"Parameter 'vad_analyzer' is deprecated, use `LLMUserAggregator`'s new "
"`vad_analyzer` parameter instead.",
DeprecationWarning,
)
def enable_audio_in_stream_on_start(self, enabled: bool) -> None:
"""Enable or disable audio streaming on transport start.
@@ -173,9 +184,23 @@ class BaseInputTransport(FrameProcessor):
def vad_analyzer(self) -> Optional[VADAnalyzer]:
"""Get the Voice Activity Detection analyzer.
.. deprecated:: 0.0.101
This method is deprecated and will be removed in a future version.
Use `LLMUserAggregator`'s new `vad_analyzer` parameter instead.
Returns:
The VAD analyzer instance if configured, None otherwise.
"""
import warnings
with warnings.catch_warnings():
warnings.simplefilter("always")
warnings.warn(
"Method 'vad_analyzer' is deprecated. Use `LLMUserAggregator`'s new "
"`vad_analyzer` parameter instead.",
DeprecationWarning,
)
return self._params.vad_analyzer
@property
@@ -212,6 +237,13 @@ class BaseInputTransport(FrameProcessor):
self._sample_rate = self._params.audio_in_sample_rate or frame.audio_in_sample_rate
# Start audio filter.
if self._params.audio_in_filter:
await self._params.audio_in_filter.start(self._sample_rate)
###################################################################
# DEPRECATED.
# Configure VAD analyzer.
if self._params.vad_analyzer:
self._params.vad_analyzer.set_sample_rate(self._sample_rate)
@@ -227,10 +259,7 @@ class BaseInputTransport(FrameProcessor):
await self.broadcast_frame(
SpeechControlParamsFrame, vad_params=vad_params, turn_params=turn_params
)
# Start audio filter.
if self._params.audio_in_filter:
await self._params.audio_in_filter.start(self._sample_rate)
###################################################################
async def stop(self, frame: EndFrame):
"""Stop the input transport and cleanup resources.
@@ -341,9 +370,11 @@ class BaseInputTransport(FrameProcessor):
elif isinstance(frame, StopFrame):
await self.push_frame(frame, direction)
await self.pause(frame)
###################################################################
# DEPRECATED.
elif isinstance(frame, VADParamsUpdateFrame):
if self.vad_analyzer:
self.vad_analyzer.set_params(frame.params)
if self._params.vad_analyzer:
self._params.vad_analyzer.set_params(frame.params)
await self.broadcast_frame(
SpeechControlParamsFrame,
vad_params=frame.params,
@@ -351,6 +382,7 @@ class BaseInputTransport(FrameProcessor):
if self._params.turn_analyzer
else None,
)
###################################################################
elif isinstance(frame, FilterUpdateSettingsFrame) and self._params.audio_in_filter:
await self._params.audio_in_filter.process_frame(frame)
# Other frames
@@ -373,18 +405,89 @@ class BaseInputTransport(FrameProcessor):
await self.cancel_task(self._audio_task)
self._audio_task = None
async def _vad_analyze(self, audio_frame: InputAudioRawFrame) -> VADState:
async def _audio_task_handler(self):
"""Main audio processing task handler for VAD and turn analysis."""
vad_state: VADState = VADState.QUIET
# Skip timeout handling until the first audio frame arrives (e.g. client
# not yet connected).
audio_received = False
while True:
try:
frame: InputAudioRawFrame = await asyncio.wait_for(
self._audio_in_queue.get(), timeout=AUDIO_INPUT_TIMEOUT_SECS
)
# From now on, timeout should warn if there's no audio.
audio_received = True
# If an audio filter is available, run it before VAD.
if self._params.audio_in_filter:
frame.audio = await self._params.audio_in_filter.filter(frame.audio)
###################################################################
# DEPRECATED.
#
# Check VAD and push event if necessary. We just care about
# changes from QUIET to SPEAKING and vice versa.
previous_vad_state = vad_state
if self._params.vad_analyzer:
vad_state = await self._deprecated_handle_vad(frame, vad_state)
if self._params.turn_analyzer:
await self._deprecated_run_turn_analyzer(frame, vad_state, previous_vad_state)
if self._params.vad_analyzer and vad_state == VADState.SPEAKING:
await self._deprecated_user_currently_speaking()
###################################################################
# Push audio downstream if passthrough is set.
if self._params.audio_in_passthrough:
await self.push_frame(frame)
self._audio_in_queue.task_done()
except asyncio.TimeoutError:
if not audio_received:
continue
logger.warning(
f"{self}: audio not received for more than {AUDIO_INPUT_TIMEOUT_SECS}"
)
###################################################################
# DEPRECATED.
if self._user_speaking:
logger.warning(
"Forcing VAD user stopped speaking due to timeout receiving audio frame!"
)
vad_state = VADState.QUIET
if self._params.turn_analyzer:
self._params.turn_analyzer.clear()
if self._params.turn_analyzer:
await self._deprecated_handle_user_interruption(VADState.QUIET)
else:
await self.push_frame(VADUserStoppedSpeakingFrame())
###################################################################
#
# DEPRECATED.
#
# The functions below are deprecated and should be removed once the old
# interruption strategies and turn analyzer are removed.
#
async def _deprecated_vad_analyze(self, audio_frame: InputAudioRawFrame) -> VADState:
"""Analyze audio frame for voice activity."""
state = VADState.QUIET
if self.vad_analyzer:
state = await self.vad_analyzer.analyze_audio(audio_frame.audio)
if self._params.vad_analyzer:
state = await self._params.vad_analyzer.analyze_audio(audio_frame.audio)
return state
async def _new_handle_vad(
async def _deprecated_new_handle_vad(
self, audio_frame: InputAudioRawFrame, vad_state: VADState
) -> VADState:
"""Handle Voice Activity Detection results and generate appropriate frames."""
new_vad_state = await self._vad_analyze(audio_frame)
new_vad_state = await self._deprecated_vad_analyze(audio_frame)
if (
new_vad_state != vad_state
and new_vad_state != VADState.STARTING
@@ -398,72 +501,22 @@ class BaseInputTransport(FrameProcessor):
vad_state = new_vad_state
return vad_state
async def _handle_vad(self, audio_frame: InputAudioRawFrame, vad_state: VADState) -> VADState:
async def _deprecated_handle_vad(
self, audio_frame: InputAudioRawFrame, vad_state: VADState
) -> VADState:
"""Handle Voice Activity Detection results and generate appropriate frames."""
if self._params.turn_analyzer or self._deprecated_openaillmcontext:
return await self._deprecated_handle_vad(audio_frame, vad_state)
return await self._deprecated_old_handle_vad(audio_frame, vad_state)
else:
return await self._new_handle_vad(audio_frame, vad_state)
return await self._deprecated_new_handle_vad(audio_frame, vad_state)
async def _audio_task_handler(self):
"""Main audio processing task handler for VAD and turn analysis."""
vad_state: VADState = VADState.QUIET
while True:
try:
frame: InputAudioRawFrame = await asyncio.wait_for(
self._audio_in_queue.get(), timeout=AUDIO_INPUT_TIMEOUT_SECS
)
# If an audio filter is available, run it before VAD.
if self._params.audio_in_filter:
frame.audio = await self._params.audio_in_filter.filter(frame.audio)
# Check VAD and push event if necessary. We just care about
# changes from QUIET to SPEAKING and vice versa.
previous_vad_state = vad_state
if self._params.vad_analyzer:
vad_state = await self._handle_vad(frame, vad_state)
# DEPRECATED.
if self._params.turn_analyzer:
await self._deprecated_run_turn_analyzer(frame, vad_state, previous_vad_state)
if vad_state == VADState.SPEAKING:
await self._user_currently_speaking()
# Push audio downstream if passthrough is set.
if self._params.audio_in_passthrough:
await self.push_frame(frame)
self._audio_in_queue.task_done()
except asyncio.TimeoutError:
if self._user_speaking:
logger.warning(
"Forcing VAD user stopped speaking due to timeout receiving audio frame!"
)
vad_state = VADState.QUIET
if self._params.turn_analyzer:
self._params.turn_analyzer.clear()
if self._params.turn_analyzer:
await self._deprecated_handle_user_interruption(VADState.QUIET)
else:
await self.push_frame(VADUserStoppedSpeakingFrame())
async def _user_currently_speaking(self):
async def _deprecated_user_currently_speaking(self):
"""Handle user speaking frame."""
diff_time = time.time() - self._user_speaking_frame_time
if diff_time >= self._user_speaking_frame_period:
await self.broadcast_frame(UserSpeakingFrame)
self._user_speaking_frame_time = time.time()
#
# DEPRECATED.
#
# The functions below are deprecated and should be removed once the old
# interruption strategies and turn analyzer are removed.
#
async def _deprecated_handle_bot_started_speaking(self, frame: BotStartedSpeakingFrame):
"""Update bot speaking state when bot starts speaking."""
self._bot_speaking = True
@@ -503,11 +556,11 @@ class BaseInputTransport(FrameProcessor):
await self.broadcast_frame(UserStoppedSpeakingFrame, emulated=emulated)
async def _deprecated_handle_vad(
async def _deprecated_old_handle_vad(
self, audio_frame: InputAudioRawFrame, vad_state: VADState
) -> VADState:
"""Handle Voice Activity Detection results and generate appropriate frames."""
new_vad_state = await self._vad_analyze(audio_frame)
new_vad_state = await self._deprecated_vad_analyze(audio_frame)
if (
new_vad_state != vad_state
and new_vad_state != VADState.STARTING
@@ -539,9 +592,7 @@ class BaseInputTransport(FrameProcessor):
async def _deprecated_handle_end_of_turn(self):
"""Handle end-of-turn analysis and generate prediction results."""
# Don't use self._params.turn_analyzer so we can keep showing one
# deprecation warning.
if self.turn_analyzer:
if self._params.turn_analyzer:
state, prediction = await self._params.turn_analyzer.analyze_end_of_turn()
await self._deprecated_handle_prediction_result(prediction)
await self._deprecated_handle_end_of_turn_complete(state)

5
src/pipecat/transports/base_transport.py
View File

@@ -113,6 +113,11 @@ class TransportParams(BaseModel):
instead.
vad_analyzer: Voice Activity Detection analyzer instance.
.. deprecated:: 0.0.101
The `vad_analyzer` parameter is deprecated, use `LLMUSerAggregator`'s
new `vad_analyzer` parameter instead.
turn_analyzer: Turn-taking analyzer instance for conversation management.
.. deprecated:: 0.0.99