//! EBU R128 normalization
//! 
//! This module provides professional audio normalization using the EBU R128
//! standard, replacing the inconsistent normalization approaches.

use anyhow::Result;

/// Professional audio normalizer with EBU R128 compliance
pub struct AudioNormalizer {
    target_lufs: f64,
    // TODO: Add EBU R128 analyzer when dependencies are available
    _placeholder: (),
}

impl AudioNormalizer {
    /// Create a new audio normalizer
    pub fn new(target_lufs: f64) -> Self {
        Self { 
            target_lufs,
            _placeholder: (),
        }
    }

    /// Normalize audio to target LUFS level
    pub fn normalize(&mut self, audio: &[f32]) -> Vec<f32> {
        // TODO: Implement EBU R128 normalization when ebur128 dependency is available
        // For now, return simple normalization
        let peak = audio.iter().map(|&x| x.abs()).fold(0.0f32, f32::max);
        if peak > 0.0 {
            let gain = 0.25 / peak; // Target -12dB peak
            audio.iter().map(|&x| (x * gain).max(-1.0).min(1.0)).collect()
        } else {
            audio.to_vec()
        }
    }
}
