Origin/audio for waiting

app/agents/voice/automatic/__init__.py

@@ -21,6 +21,7 @@
     OutputAudioRawFrame,
     TTSSpeakFrame,
 )
+
 from pipecat.pipeline.pipeline import Pipeline
 from pipecat.pipeline.runner import PipelineRunner
 from pipecat.pipeline.task import PipelineParams, PipelineTask
@@ -54,10 +55,13 @@
 
 from .processors import LLMSpyProcessor
 from .processors.ptt_vad_filter import PTTVADFilter
+from .processors.user_speaking_audio import UserSpeakingAudioProcessor
 from .prompts import get_system_prompt
 from .stt import get_stt_service
 from .tools import initialize_tools
 from .tts import get_tts_service
+from .audio.audio_manager import initialize_audio_manager
+
 from .types import (
     Mode,
     TTSProvider,
@@ -212,6 +216,9 @@ async def main():
         enable_chart_text_filter=config.ENABLE_CHARTS,
     )
 
+    # Initialize audio manager for looping waiting audio
+    audio_manager = initialize_audio_manager(tts)
+
     llm = LLMServiceWrapper(
         AzureLLMService(
             api_key=config.AZURE_OPENAI_API_KEY,
@@ -273,39 +280,24 @@ async def main():
 
     rtvi = RTVIProcessor(config=RTVIConfig(config=[]))
 
-    # Simplified event handler for TTS feedback
-    @llm.event_handler("on_function_calls_started")
-    async def on_function_calls_started(service, function_calls):
-        # Only play the "checking" message if using Google TTS
-        if tts_provider == TTSProvider.GOOGLE:
-            for function_call in function_calls:
-                # Skip "checking" message for instant functions and chart tools
-                instant_functions = [
-                    "get_current_time",
-                    "utility__getCurrentTime",  # NeuroLink equivalent
-                    "utility__generateTimestamp",  # NeuroLink timestamp tool
-                    "generate_bar_chart",
-                    "generate_line_chart",
-                    "generate_donut_chart",
-                    "generate_single_stat_card",
-                ]
-                if function_call.function_name not in instant_functions:
-                    # Play tool call sound if enabled, otherwise use phrases
-                    if tool_call_sound:
-                        await transport.send_audio(tool_call_sound)
-                    else:
-                        phrases = [
-                            "Let me check on that.",
-                            "Give me a moment to do that.",
-                            "I'll get right on that.",
-                            "Working on that for you.",
-                            "One moment — I'm on it",
-                            "One second, boss.",
-                            "On it, boss!",
-                            "Just a second, captain.",
-                        ]
-                        await tts.queue_frame(TTSSpeakFrame(random.choice(phrases)))
-                    break
+    # LLM response started handler - DO NOT start audio here
+    # Audio should only start when user stops speaking, not when LLM processes
+    @llm.event_handler("on_llm_response_started")
+    async def on_llm_response_started(service, function_calls):
+        logger.info(f"Function calls started event triggered with {len(function_calls)} calls")
+
+    # Only stop audio when function calls complete if audio is actually playing
+    @llm.event_handler("on_function_calls_finished")
+    async def on_function_calls_finished(service):
+        # Stop audio when function calls finish but keep it enabled for potential resumption
+        if audio_manager.is_playing:
+            # Stop current audio but don't disable - allow resumption if no LLM text follows
+            audio_manager.is_playing = False
+            if audio_manager.loop_task and not audio_manager.loop_task.done():
+                audio_manager.loop_task.cancel()
+            logger.info("Function calls finished - stopped audio but kept enabled for resumption")
+        else:
+            logger.debug("Function calls finished - audio not playing, no action needed")
 
     messages = [
         {"role": "system", "content": system_prompt},
@@ -334,6 +326,10 @@ async def on_function_calls_started(service, function_calls):
         ptt_vad_filter = PTTVADFilter("PTTVADFilter")
         pipeline_components.append(ptt_vad_filter)  # Filter VAD frames after STT
 
+    # Add user speaking audio processor - manages audio based on user speech
+    user_speaking_processor = UserSpeakingAudioProcessor("UserSpeakingAudioProcessor")
+    pipeline_components.append(user_speaking_processor)  # Add after STT/PTT, before RTVI
+
     pipeline_components.extend([rtvi, context_aggregator.user()])
     if (
         config.MEM0_ENABLED

app/agents/voice/automatic/audio/audio_manager.py

@@ -0,0 +1,232 @@
+"""
+Simplified Audio Manager - Minimal variables, seamless playback, immediate stop capability
+"""
+
+import asyncio
+from typing import Optional
+from pydub import AudioSegment
+from pipecat.frames.frames import OutputAudioRawFrame
+from app.core.logger import logger
+
+# Configurable audio length constant
+AUDIO_LENGTH_SECONDS = 6  # Default duration in seconds
+
+
+class AudioManager:
+    """Simplified audio manager with minimal state and seamless chunked playback."""
+
+    def __init__(self, tts_service, transport=None):
+        self.tts_service = tts_service
+        self.transport = transport  # Keep for compatibility
+
+        # MINIMAL STATE - Only 4 variables needed
+        self.is_playing = False
+        self.loop_count = 0  # Track completed loops (max 3 = 18 seconds total)
+        self.audio_chunks = []  # 1-second audio chunks for seamless playback
+        self.user_has_input = False  # Ensure audio only starts after user input
+
+        # Internal task management
+        self.loop_task: Optional[asyncio.Task] = None
+
+        self._load_waiting_audio()
+
+    def _load_waiting_audio(self):
+        """Load waiting audio and split into 1-second chunks for seamless playback."""
+        try:
+            wav_file_path = f"app/agents/voice/automatic/audio/waiting_{int(AUDIO_LENGTH_SECONDS)}sec.wav"
+
+            audio = AudioSegment.from_wav(wav_file_path)
+            # Convert to pipeline format
+            audio = audio.set_frame_rate(16000).set_channels(1).set_sample_width(2)
+
+            # Split into clean 1-second chunks
+            self.audio_chunks = []
+            chunk_duration_ms = 1000  # 1 second in milliseconds
+
+            for i in range(0, len(audio), chunk_duration_ms):
+                chunk = audio[i:i + chunk_duration_ms]
+
+                # Ensure chunk is exactly 1 second (pad if necessary)
+                if len(chunk) < chunk_duration_ms:
+                    silence_needed = chunk_duration_ms - len(chunk)
+                    silence = AudioSegment.silent(duration=silence_needed, frame_rate=16000)
+                    chunk = chunk + silence
+
+                self.audio_chunks.append(chunk.raw_data)
+
+            logger.info(f"Loaded {AUDIO_LENGTH_SECONDS}-second waiting audio: {len(self.audio_chunks)} chunks")
+
+        except Exception as e:
+            logger.error(f"Failed to load waiting_{int(AUDIO_LENGTH_SECONDS)}sec.wav: {e}")
+            self.audio_chunks = []
+
+    def set_user_input(self):
+        """Mark that user has provided input - required for audio to start."""
+        self.user_has_input = True
+        logger.info("User input detected - audio enabled")
+
+    async def start_audio(self):
+        """Start seamless chunked audio playback (only if user has provided input)."""
+
+        # Check prerequisites
+        if not self.user_has_input:
+            return
+
+        if not self.audio_chunks:
+            return
+
+        if self.is_playing:
+            return
+
+        # Start audio
+        self.is_playing = True
+        self.loop_count = 0
+
+        # Cancel any existing task
+        if self.loop_task and not self.loop_task.done():
+            self.loop_task.cancel()
+
+        # Start seamless audio streaming
+        self.loop_task = asyncio.create_task(self._stream_seamless_audio())
+        # logger.info("Started audio playback")
+
+    async def stop_and_disable_audio(self):
+        """Stop audio immediately and disable until next user input."""
+        # Set stop flags
+        self.is_playing = False
+        self.user_has_input = False  # Require new user input for next audio
+        self.loop_count = 0
+
+        # Cancel audio task
+        if self.loop_task and not self.loop_task.done():
+            self.loop_task.cancel()
+            try:
+                await self.loop_task
+            except asyncio.CancelledError:
+                pass
+
+        # Clear audio queue aggressively
+        await self._clear_audio_queue()
+
+    def reset(self):
+        """Reset for new conversation cycle."""
+        self.is_playing = False
+        self.user_has_input = False
+        self.loop_count = 0
+
+        if self.loop_task and not self.loop_task.done():
+            self.loop_task.cancel()
+
+    def set_bot_speaking(self, speaking: bool):
+        """Track when bot starts/stops speaking to prevent audio during speech."""
+        if speaking and self.is_playing:
+            logger.info("Bot started speaking - stopping audio")
+            asyncio.create_task(self.stop_and_disable_audio())
+
+    async def _stream_seamless_audio(self):
+        """Stream audio chunks seamlessly with minimal buffer for immediate stopping."""
+        try:
+            if not self.audio_chunks:
+                return
+
+            total_chunks = len(self.audio_chunks)  # 6 chunks = 6 seconds
+            max_loops = 3  # Maximum 3 loops = 18 seconds total
+            chunk_index = 0
+
+            # Pre-queue 1 chunk for seamless start (minimal buffer)
+            if self.is_playing:
+                audio_frame = OutputAudioRawFrame(
+                    audio=self.audio_chunks[chunk_index],
+                    sample_rate=16000,
+                    num_channels=1
+                )
+                await self.tts_service.queue_frame(audio_frame)
+                chunk_index = 1
+
+            # Continue streaming with optimal timing for seamless playback
+            while self.is_playing and self.loop_count < max_loops:
+
+                # Wait 0.8 seconds before queuing next chunk (seamless timing)
+                await asyncio.sleep(0.8)
+
+                # Check if we should stop
+                if not self.is_playing:
+                    break
+
+                # Queue next chunk
+                current_chunk = self.audio_chunks[chunk_index % total_chunks]
+                audio_frame = OutputAudioRawFrame(
+                    audio=current_chunk,
+                    sample_rate=16000,
+                    num_channels=1
+                )
+                await self.tts_service.queue_frame(audio_frame)
+
+                chunk_index += 1
+
+                # Update loop count when we complete a full cycle
+                if chunk_index % total_chunks == 0:
+                    self.loop_count += 1
+
+        except asyncio.CancelledError:
+            pass
+        except Exception as e:
+            logger.error(f"Error in audio streaming: {e}")
+        finally:
+            self.is_playing = False
+
+    async def _clear_audio_queue(self):
+        """Clear audio queue to prevent delayed audio after stop."""
+        try:
+            # Try to interrupt TTS service
+            if hasattr(self.tts_service, 'interrupt'):
+                if asyncio.iscoroutinefunction(self.tts_service.interrupt):
+                    await self.tts_service.interrupt()
+                else:
+                    self.tts_service.interrupt()
+
+            # Send brief silence to flush pipeline
+            silence_duration = 0.01  # 10ms silence
+            sample_rate = 16000
+            silence_samples = int(silence_duration * sample_rate)
+            silence_data = b'\x00' * (silence_samples * 2)  # 16-bit silence
+
+            silence_frame = OutputAudioRawFrame(
+                audio=silence_data,
+                sample_rate=16000,
+                num_channels=1
+            )
+            await self.tts_service.queue_frame(silence_frame)
+
+        except Exception as e:
+            logger.debug(f"Audio queue clearing failed: {e}")
+
+
+# Global audio manager instance
+_audio_manager: Optional[AudioManager] = None
+
+
+def get_audio_manager() -> Optional[AudioManager]:
+    """Get the global audio manager instance."""
+    return _audio_manager
+
+
+def set_audio_manager(audio_manager: AudioManager):
+    """Set the global audio manager instance."""
+    global _audio_manager
+    _audio_manager = audio_manager
+
+
+def initialize_audio_manager(tts_service, transport=None) -> AudioManager:
+    """Initialize and return the audio manager."""
+    audio_manager = AudioManager(tts_service, transport)
+    set_audio_manager(audio_manager)
+    return audio_manager
+
+# Simple helper functions for external use
+
+def reset_for_new_input():
+    """Legacy method - reset for new input."""
+    audio_manager = get_audio_manager()
+    if audio_manager:
+        audio_manager.reset()