lnp_opt / data /src /lab_assistant /audio_utils.py
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import os
import wave
import threading
from datetime import datetime
from time import sleep
import pyaudio
import soundfile as sf
import pygame
import keyboard
from openai import OpenAI
def _safe_stop_recording(stream, p):
try:
stream.stop_stream()
except Exception:
pass
try:
stream.close()
except Exception:
pass
try:
p.terminate()
except Exception:
pass
def record_audio(duration=10):
"""
Record microphone input to both WAV and MP3. Press Space to stop early.
Returns the MP3 path.
"""
chunk = 1024
sample_format = pyaudio.paInt16
channels = 1
fs = 44100
p = pyaudio.PyAudio()
stream = p.open(format=sample_format, channels=channels, rate=fs, frames_per_buffer=chunk, input=True)
frames = []
print("Recording... Press Space to stop.")
stop_event = threading.Event()
def listen_for_stop():
while not stop_event.is_set():
try:
if keyboard.is_pressed("space"):
stop_event.set()
print("Recording stopped by user.")
_safe_stop_recording(stream, p)
except Exception:
# keyboard might not have permission on some systems
pass
listener_thread = threading.Thread(target=listen_for_stop, daemon=True)
listener_thread.start()
for _ in range(0, int(fs / chunk * duration)):
if stop_event.is_set():
break
data = stream.read(chunk)
frames.append(data)
if not stop_event.is_set():
_safe_stop_recording(stream, p)
listener_thread.join()
print("Recording finished.")
now = datetime.now().strftime("%Y%m%d_%H%M%S")
wav_filename = f"question_{now}.wav"
mp3_filename = f"question_{now}.mp3"
with wave.open(wav_filename, "wb") as wf:
wf.setnchannels(channels)
wf.setsampwidth(p.get_sample_size(sample_format))
wf.setframerate(fs)
wf.writeframes(b"".join(frames))
if os.path.getsize(wav_filename) > 0:
data, samplerate = sf.read(wav_filename)
sf.write(mp3_filename, data, samplerate, format="MP3")
else:
print(f"{wav_filename} is empty.")
return mp3_filename
def audio_to_text(audio_file_path, api_key):
client = OpenAI(api_key=api_key)
with open(audio_file_path, "rb") as audio_file:
tr = client.audio.transcriptions.create(model="whisper-1", file=audio_file)
return tr.text
def text_to_audio(text, output_file_path, api_key):
client = OpenAI(api_key=api_key)
with client.audio.speech.with_streaming_response.create(
model="tts-1", voice="alloy", input=text
) as resp:
resp.stream_to_file(output_file_path)
def play_audio_with_skip(audio_file_path):
"""
Play audio via pygame with Space to stop. Falls back to direct playback if needed.
"""
def stop_playback():
if pygame.mixer.music.get_busy():
pygame.mixer.music.stop()
print("Playback stopped by user.")
try:
pygame.mixer.init()
pygame.mixer.music.load(audio_file_path)
print("Playing audio... Press Space to skip.")
stop_event = threading.Event()
def listen_for_skip():
while not stop_event.is_set():
try:
if keyboard.is_pressed("space"):
stop_event.set()
stop_playback()
break
except Exception:
# keyboard may fail on some systems
pass
listener_thread = threading.Thread(target=listen_for_skip, daemon=True)
listener_thread.start()
pygame.mixer.music.play()
while pygame.mixer.music.get_busy() and not stop_event.is_set():
sleep(0.1)
stop_event.set()
listener_thread.join()
pygame.mixer.quit()
except Exception as e:
print(f"Fallback playback: {e}")
try:
import IPython
from IPython.display import Audio, display
display(Audio(audio_file_path))
except Exception as _:
print("Could not play audio automatically.")