app.py

import gradio as gr
import numpy as np
import librosa
import requests
from io import BytesIO
from PIL import Image
import os
from tensorflow.keras.models import load_model
from faster_whisper import WhisperModel

# Load the emotion prediction model
def load_emotion_model(model_path):
    try:
        model = load_model(model_path)
        return model
    except Exception as e:
        print("Error loading emotion prediction model:", e)
        return None

model_path = 'mymodel_SER_LSTM_RAVDESS.h5'
model = load_emotion_model(model_path)

# Initialize WhisperModel
model_size = "small"
model2 = WhisperModel(model_size, device="cpu", compute_type="int8")

# Function to transcribe audio
def transcribe(wav_filepath):
    segments, _ = model2.transcribe(wav_filepath, beam_size=5)
    return "".join([segment.text for segment in segments])

# Function to extract MFCC features from audio
def extract_mfcc(wav_file_name):
    try:
        y, sr = librosa.load(wav_file_name)
        mfccs = np.mean(librosa.feature.mfcc(y=y, sr=sr, n_mfcc=40).T, axis=0)
        return mfccs
    except Exception as e:
        print("Error extracting MFCC features:", e)
        return None

# Emotions dictionary
emotions = {1: 'neutral', 2: 'calm', 3: 'happy', 4: 'sad', 5: 'angry', 6: 'fearful', 7: 'disgust', 8: 'surprised'}

# Function to predict emotion from audio
def predict_emotion_from_audio(wav_filepath):
    try:
        test_point = extract_mfcc(wav_filepath)
        if test_point is not None:
            test_point = np.reshape(test_point, newshape=(1, 40, 1))
            predictions = model.predict(test_point)
            predicted_emotion_label = np.argmax(predictions[0]) + 1
            return emotions[predicted_emotion_label]
        else:
            return "Error: Unable to extract features"
    except Exception as e:
        print("Error predicting emotion:", e)
        return None

api_key = os.getenv("DeepAI_api_key")

# Function to generate an image using DeepAI Text to Image API
def generate_image(api_key, text):
    url = "https://api.deepai.org/api/text2img"
    headers = {'api-key': api_key}
    response = requests.post(
        url,
        data={'text': text},
        headers=headers
    )
    response_data = response.json()
    if 'output_url' in response_data:
        image_url = response_data['output_url']
        image_response = requests.get(image_url)
        image = Image.open(BytesIO(image_response.content))
        return image
    else:
        return None

        
# Function to get predictions
def get_predictions(audio_input):
    emotion_prediction = predict_emotion_from_audio(audio_input)
    transcribed_text = transcribe(audio_input)
    texto_imagen = emotion_prediction + transcribed_text
    image = generate_image(api_key, texto_imagen)
    return emotion_prediction, transcribed_text, image

# Create the Gradio interface
interface = gr.Interface(
    fn=get_predictions,
    inputs=gr.Audio(label="Input Audio", type="filepath"),
    outputs=[
        gr.Label("Acoustic Prediction", label="Acoustic Prediction"),
        gr.Label("Transcribed Text", label="Transcribed Text"),
        gr.Image(type='pil', label="Generated Image")
    ],
    title="Affective Virtual Environments",
    description="Create an AVE using your voice."
)


interface.launch()