app.py

import streamlit as st
import os
import tempfile
import whisper
import speech_recognition as sr
from pydub import AudioSegment
from audio_recorder_streamlit import audio_recorder

# Function to convert mp3 file to wav
def convert_mp3_to_wav(mp3_path):
    audio = AudioSegment.from_mp3(mp3_path)
    wav_path = mp3_path.replace('.mp3', '.wav')
    audio.export(wav_path, format="wav")
    return wav_path

# Function to transcribe audio using OpenAI Whisper
def transcribe_whisper(model_name, file_path):
    model = whisper.load_model(model_name)
    result = model.transcribe(file_path)
    return result["text"]

# Function to transcribe audio using Google Speech API
def transcribe_speech_recognition(file_path):
    r = sr.Recognizer()
    with sr.AudioFile(file_path) as source:
        r.adjust_for_ambient_noise(source, duration=0.5)  # Adjust ambient noise threshold
        audio = r.record(source)

    try:
        result = r.recognize_google(audio, language='spanish')
        return result
    except sr.UnknownValueError:
        return "No se pudo reconocer ningún texto en el audio."

# Function to perform transcription based on selected method
def perform_transcription(transcription_method, model_name, audio_path):
    if transcription_method == 'OpenAI Whisper':
        return transcribe_whisper(model_name, audio_path)
    else:
        return transcribe_speech_recognition(audio_path)

# Function to handle uploaded file transcription
def handle_uploaded_file(uploaded_file, transcription_method, model_name):
    file_details = {"FileName": uploaded_file.name, "FileType": uploaded_file.type, "FileSize": uploaded_file.size}
    st.write(file_details)

    # Save uploaded file to temp directory
    os.makedirs("temp", exist_ok=True)  # Create temp directory if it doesn't exist
    file_path = os.path.join("temp", uploaded_file.name)
    with open(file_path, "wb") as f:
        f.write(uploaded_file.getbuffer())

    with st.spinner('Transcribiendo...'):
        if uploaded_file.name.endswith('.mp3') and transcription_method != 'OpenAI Whisper':
            # Convert mp3 to wav if Google Speech API is selected and file is in mp3 format
            file_path = convert_mp3_to_wav(file_path)

        # Perform transcription
        transcript = perform_transcription(transcription_method, model_name, file_path)

    st.text_area('Resultado de la Transcripción:', transcript, height=200)

def main():
    st.title('Transcriptor de Audio')

    # Choose the transcription method and model
    option = st.selectbox('Escoger Modelo de Transcripción', ('Subir un archivo', 'Grabar audio en tiempo real'))
    transcription_method = st.selectbox('Escoge el método de transcripción', ('OpenAI Whisper', 'Google Speech API'))
    if transcription_method == 'OpenAI Whisper':
        model_name = st.selectbox('Escoge el modelo de Whisper', ('base', 'small', 'medium', 'large', 'tiny'))

    if option == 'Subir un archivo':
        uploaded_file = st.file_uploader("Sube tu archivo de audio para transcribir", type=['wav', 'mp3'])

        if uploaded_file is not None:
            handle_uploaded_file(uploaded_file, transcription_method, model_name)
    
    elif option == 'Grabar audio en tiempo real':
        duration = 5
        # duration = st.slider("Selecciona la duración de la grabación (segundos)", 1, 10, 5)
        # st.write("Duración de la grabación:", duration, "segundos")
        
        audio_bytes = audio_recorder(pause_threshold=duration, sample_rate=16_000)

        if audio_bytes:
            st.write("Grabación finalizada. Transcribiendo...")
            with st.spinner('Transcribiendo...'):
                # Save recorded audio to a temporary file
                with tempfile.NamedTemporaryFile(suffix='.wav', delete=False) as temp_audio:
                    temp_path = temp_audio.name
                    temp_audio.write(audio_bytes)

                # Perform transcription
                transcript = perform_transcription(transcription_method, model_name, temp_path)

                st.text_area('Resultado de la Transcripción:', transcript, height=200)

if __name__ == "__main__":
    main()