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"""
utils.py
Functions:
- get_script: Get the dialogue from the LLM.
- call_llm: Call the LLM with the given prompt and dialogue format.
- get_audio: Get the audio from the TTS model from HF Spaces.
"""
import os
from gradio_client import Client
from openai import OpenAI
from pydantic import ValidationError
MODEL_ID = "accounts/fireworks/models/llama-v3p1-405b-instruct"
client = OpenAI(
base_url="https://api.fireworks.ai/inference/v1",
api_key=os.getenv("FIREWORKS_API_KEY"),
)
hf_client = Client("mrfakename/MeloTTS")
def generate_script(system_prompt: str, text: str, dialogue_format):
"""Get the dialogue from the LLM."""
# Load as python object
try:
response = call_llm(system_prompt, text, dialogue_format)
dialogue = dialogue_format.model_validate_json(
response.choices[0].message.content
)
except ValidationError as e:
error_message = f"Failed to parse dialogue JSON: {e}"
system_prompt_with_error = f"{system_prompt}\n\n Please return a VALID JSON object. This was the earlier error: {error_message}"
response = call_llm(system_prompt_with_error, text, dialogue_format)
dialogue = dialogue_format.model_validate_json(
response.choices[0].message.content
)
return dialogue
def call_llm(system_prompt: str, text: str, dialogue_format):
"""Call the LLM with the given prompt and dialogue format."""
response = client.chat.completions.create(
messages=[
{"role": "system", "content": system_prompt},
{"role": "user", "content": text},
],
model=MODEL_ID,
max_tokens=16_384,
temperature=0.1,
response_format={
"type": "json_object",
"schema": dialogue_format.model_json_schema(),
},
)
return response
def generate_audio(text: str, speaker: str) -> str:
"""Get the audio from the TTS model from HF Spaces."""
if speaker == "Guest":
accent = "EN-US"
speed = 0.9
else: # host
accent = "EN-Default"
speed = 1
result = hf_client.predict(
text=text, language="EN", speaker=accent, speed=speed, api_name="/synthesize"
)
return result
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