#pragma once
#include <algorithm>
#include <cstdint>

// Десять секундных интервалов. Время передаёт аудиопоток из монотонных часов.
struct call_jitter_window {
    struct bucket { int64_t second = -1; int low = 0, high = 0; } buckets[10];
    int low = 0, high = 0, reserve = 60;
    int max_reserve = 1000;
    bool observe(int64_t now_ms, int depth) {
        int64_t second = now_ms / 1000;
        auto& b = buckets[second % 10];
        bool changed_second = b.second != second;
        if (changed_second) { b.second = second; b.low = b.high = depth; }
        else { b.low = std::min(b.low, depth); b.high = std::max(b.high, depth); }
        low = high = depth;
        for (const auto& item : buckets) {
            if (item.second < 0 || item.second > second || second - item.second >= 10) continue;
            low = std::min(low, item.low); high = std::max(high, item.high);
        }
        reserve = std::max(60, std::min(max_reserve, high - low));
        return changed_second;
    }
};