STTv2 (Scribe v2 Realtime) support

- Add STTv2 class with full Scribe v2 Realtime API support
- Support word-level timestamps (include_timestamps parameter)
- Support both VAD and manual commit strategies
- Emit INTERIM_TRANSCRIPT events for real-time UI feedback
- Handle committed_transcript_with_timestamps events
- Add update_options() method for dynamic reconfiguration
- Comprehensive error handling and logging
- Full docstrings with examples

Author: varghesepaul

livekit-plugins/livekit-plugins-elevenlabs/livekit/plugins/elevenlabs/__init__.py

@@ -17,18 +17,23 @@
 See https://docs.livekit.io/agents/integrations/tts/elevenlabs/ for more information.
 """
 
-from .models import TTSEncoding, TTSModels
+from .models import STTAudioFormat, STTModels, TTSEncoding, TTSModels
 from .stt import STT
+from .stt_v2 import SpeechStreamv2, STTv2
 from .tts import DEFAULT_VOICE_ID, TTS, Voice, VoiceSettings
 from .version import __version__
 
 __all__ = [
     "STT",
+    "STTv2",
+    "SpeechStreamv2",
     "TTS",
     "Voice",
     "VoiceSettings",
     "TTSEncoding",
     "TTSModels",
+    "STTModels",
+    "STTAudioFormat",
     "DEFAULT_VOICE_ID",
     "__version__",
 ]

livekit-plugins/livekit-plugins-elevenlabs/livekit/plugins/elevenlabs/models.py

@@ -20,3 +20,15 @@
     "mp3_44100_128",
     "mp3_44100_192",
 ]
+
+STTModels = Literal["scribe_v2_realtime",]
+
+STTAudioFormat = Literal[
+    "pcm_8000",
+    "pcm_16000",
+    "pcm_22050",
+    "pcm_24000",
+    "pcm_44100",
+    "pcm_48000",
+    "ulaw_8000",
+]