introduce PipelineParams audio input/output sample rates

src/pipecat/services/gemini_multimodal_live/gemini.py

@@ -203,6 +203,8 @@ class GeminiMultimodalLiveLLMService(LLMService):
         self._bot_audio_buffer = bytearray()
         self._bot_text_buffer = ""
 
+        self._sample_rate = 24000
+
         self._settings = {
             "frequency_penalty": params.frequency_penalty,
             "max_tokens": params.max_tokens,
@@ -521,7 +523,7 @@ class GeminiMultimodalLiveLLMService(LLMService):
         if self._audio_input_paused:
             return
         # Send all audio to Gemini
-        evt = events.AudioInputMessage.from_raw_audio(frame.audio)
+        evt = events.AudioInputMessage.from_raw_audio(frame.audio, frame.sample_rate)
         await self.send_client_event(evt)
         # Manage a buffer of audio to use for transcription
         audio = frame.audio
@@ -650,7 +652,7 @@ class GeminiMultimodalLiveLLMService(LLMService):
         inline_data = part.inlineData
         if not inline_data:
             return
-        if inline_data.mimeType != "audio/pcm;rate=24000":
+        if inline_data.mimeType != f"audio/pcm;rate={self._sample_rate}":
             logger.warning(f"Unrecognized server_content format {inline_data.mimeType}")
             return
 
@@ -665,7 +667,7 @@ class GeminiMultimodalLiveLLMService(LLMService):
         self._bot_audio_buffer.extend(audio)
         frame = TTSAudioRawFrame(
             audio=audio,
-            sample_rate=24000,
+            sample_rate=self._sample_rate,
             num_channels=1,
         )
         await self.push_frame(frame)