// Metrics.
std::atomic<int64_t> metric_x264_speedcontrol_preset_used_frames[SC_PRESETS]{{0}};
+ std::atomic<double> metric_x264_speedcontrol_preset_used_frames_sum{0.0};
std::atomic<double> metric_x264_speedcontrol_buffer_available_seconds{0.0};
std::atomic<double> metric_x264_speedcontrol_buffer_size_seconds{0.0};
std::atomic<int64_t> metric_x264_speedcontrol_idle_frames{0};