#pragma once
#include <cstddef>
#include <cstdint>

inline void encode_ms(float* left, float* right, size_t n) {
    for (size_t i = 0; i < n; i++) {
        float mid = (left[i] + right[i]) * 0.5f;
        float side = (left[i] - right[i]) * 0.5f;
        left[i] = mid;
        right[i] = side;
    }
}

inline void decode_ms(float* left, float* right, size_t n) {
    for (size_t i = 0; i < n; i++) {
        float mid = left[i];
        float side = right[i];
        left[i] = mid + side;
        right[i] = mid - side;
    }
}

inline void apply_balance(float* left, float* right, float balance, size_t n) {
    float gain_l = std::sqrt(0.5f * (1 - balance));
    float gain_r = std::sqrt(0.5f * (1 + balance));
    for (size_t i = 0; i < n; i++) {
        left[i] *= gain_l;
        right[i] *= gain_r;
    }
}