karoke_system.rs

use audioprocess_cuda_rust::{AudioProcessor, CudaProcessor};
use cpal::Stream;
use cpal::traits::{DeviceTrait, HostTrait, StreamTrait};
use std::sync::Arc;

// Struct representing the karaoke system
struct KaraokeSystem {
    audio_processor: AudioProcessor,
    cuda_processor: CudaProcessor,
}

impl KaraokeSystem {
    // Constructor for initializing the karaoke system with the given audio parameters
    fn new(sample_rate: f32, channels: usize, chunk_size: usize) -> Self {
        // Initialize AudioProcessor and CudaProcessor with the provided parameters
        let audio_processor = AudioProcessor::new(sample_rate, channels, chunk_size);
        let cuda_processor = CudaProcessor::new(chunk_size);

        KaraokeSystem {
            audio_processor,
            cuda_processor,
        }
    }

    // Method for processing the audio (song and microphone input)
    fn process_audio(&mut self, song_data: &mut [f32], mic_data: &mut [f32]) {
        // Remove the vocal track from the song using the CudaProcessor
        self.cuda_processor.remove_vocal_track(song_data);

        // Apply reverb and other effects to the microphone input using the CudaProcessor
        self.cuda_processor.apply_reverb(mic_data);
        // Possible Error: Effects application failure
        // Solution: Ensure the CudaProcessor is properly configured and the effects are supported

        // Mix the processed song and microphone audio using the AudioProcessor
        self.audio_processor.mix_audio(song_data, mic_data);
        // Possible Error: Mixing failure
        // Solution: Verify the audio data is in the correct format and channels match
    }

    // Method for running the karaoke system
    fn run(&mut self) {
        // Get the default audio host
        let host = cpal::default_host();

        // Get the default input device
        let input_device = host.default_input_device().expect("No input device available");
        // Possible Error: No input device available
        // Solution: Ensure a microphone or input device is connected and recognized by the system

        // Get the default output device
        let output_device = host.default_output_device().expect("No output device available");
        // Possible Error: No output device available
        // Solution: Ensure speakers or output device are connected and recognized by the system

        // Get the default input configuration
        let input_config = input_device.default_input_config().expect("Failed to get default input config");
        // Possible Error: Failed to get input config
        // Solution: Verify the input device is functioning and supports the requested configuration

        // Get the default output configuration
        let output_config = output_device.default_output_config().expect("Failed to get default output config");
        // Possible Error: Failed to get output config
        // Solution: Verify the output device is functioning and supports the requested configuration

        // Build the input stream for microphone input
        let input_stream = input_device.build_input_stream(
            &input_config.into(),
            move |data: &[f32], _: &cpal::InputCallbackInfo| {
                // Process the microphone input
                // This is a placeholder, actual processing will be added here
                // Possible Error: Processing callback failure
                // Solution: Ensure data buffer is correctly handled and no panics occur in the callback
            },
            |err| eprintln!("Error occurred during microphone input: {}", err),
        ).expect("Failed to build input stream");
        // Possible Error: Failed to build input stream
        // Solution: Ensure the input device configuration is correct and supported

        // Build the output stream for audio output
        let output_stream = output_device.build_output_stream(
            &output_config.into(),
            move |data: &mut [f32], _: &cpal::OutputCallbackInfo| {
                // Process the song audio and mix with the microphone input
                // This is a placeholder, actual processing will be added here
                // Possible Error: Processing callback failure
                // Solution: Ensure data buffer is correctly handled and no panics occur in the callback
            },
            |err| eprintln!("Error occurred during audio output: {}", err),
        ).expect("Failed to build output stream");
        // Possible Error: Failed to build output stream
        // Solution: Ensure the output device configuration is correct and supported

        // Start the microphone input stream
        input_stream.play().expect("Failed to start microphone input stream");
        // Possible Error: Failed to start input stream
        // Solution: Verify the input device is not in use by another application and is properly configured

        // Start the audio output stream
        output_stream.play().expect("Failed to start audio output stream");
        // Possible Error: Failed to start output stream
        // Solution: Verify the output device is not in use by another application and is properly configured

        // Run the karaoke system for 60 seconds
        std::thread::sleep(std::time::Duration::from_secs(60));

        // Drop the input and output streams to stop them and free resources
        drop(input_stream);
        drop(output_stream);
    }
}

fn main() {
    // Set the desired audio parameters
    let sample_rate = 44100.0;
    let channels = 2;
    let chunk_size = 1024;

    // Create a new instance of the karaoke system
    let mut karaoke_system = KaraokeSystem::new(sample_rate, channels, chunk_size);

    // Run the karaoke system
    karaoke_system.run();
}