main.py

import gradio as gr
import librosa
import soundfile as sf

def nightcore_effect(audio_filepath):
    try:
        y, sr = librosa.load(audio_filepath, sr=None)

        # Speed up the audio (e.g., 1.25 times faster)
        y_speed_up = librosa.effects.time_stretch(y, rate=1.25)

        # Shift the pitch higher (e.g., by 5 semitones)
        y_pitch_shift = librosa.effects.pitch_shift(y_speed_up, sr=sr, n_steps=5)

        # Save the modified audio to a temporary file
        output_path = "modified_audio.wav"
        sf.write(output_path, y_pitch_shift, sr)

        return output_path
    except Exception as e:
        print(f"Error processing audio: {e}")
        return "Error"

# Define the Gradio interface
iface = gr.Interface(
    fn=nightcore_effect, 
    inputs=gr.Audio(type="filepath", label="Upload a .wav file"), # Updated line
    outputs=gr.Audio(label="Processed Audio"),
    live=False
)

# Launch the interface
iface.launch()