return final_makeup_gain_auto;
}
+ struct BusLevel {
+ float current_level_dbfs[2]; // Digital peak of last frame, left and right.
+ float peak_level_dbfs[2]; // Digital peak with hold, left and right.
+ float historic_peak_dbfs;
+ float gain_staging_db;
+ float compressor_attenuation_db; // A positive number; 0.0 for no attenuation.
+ };
+
typedef std::function<void(float level_lufs, float peak_db,
- std::vector<float> bus_level_lufs,
+ std::vector<BusLevel> bus_levels,
float global_level_lufs, float range_low_lufs, float range_high_lufs,
- std::vector<float> gain_staging_db, float final_makeup_gain_db,
+ float final_makeup_gain_db,
float correlation)> audio_level_callback_t;
void set_audio_level_callback(audio_level_callback_t callback)
{
void reset_alsa_mutex_held(DeviceSpec device_spec);
std::map<DeviceSpec, DeviceInfo> get_devices_mutex_held() const;
void update_meters(const std::vector<float> &samples);
+ void add_bus_to_master(unsigned bus_index, const std::vector<float> &samples_bus, std::vector<float> *samples_out);
void measure_bus_levels(unsigned bus_index, const std::vector<float> &left, const std::vector<float> &right);
void send_audio_level_callback();
std::atomic<float> compressor_threshold_dbfs[MAX_BUSES];
std::atomic<bool> compressor_enabled[MAX_BUSES];
+ // Note: The values here are not in dB.
+ struct PeakHistory {
+ float current_level = 0.0f; // Peak of the last frame.
+ float historic_peak = 0.0f; // Highest peak since last reset; no falloff.
+ float current_peak = 0.0f; // Current peak of the peak meter.
+ float last_peak = 0.0f;
+ float age_seconds = 0.0f; // Time since "last_peak" was set.
+ };
+ PeakHistory peak_history[MAX_BUSES][2]; // Separate for each channel.
+
double final_makeup_gain = 1.0; // Under compressor_mutex. Read/write by the user. Note: Not in dB, we want the numeric precision so that we can change it slowly.
bool final_makeup_gain_auto = true; // Under compressor_mutex.
InputMapping input_mapping; // Under audio_mutex.
std::atomic<float> fader_volume_db[MAX_BUSES] {{ 0.0f }};
+ float last_fader_volume_db[MAX_BUSES] { 0.0f }; // Under audio_mutex.
audio_level_callback_t audio_level_callback = nullptr;
mutable std::mutex audio_measure_mutex;
CorrelationMeasurer correlation; // Under audio_measure_mutex.
Resampler peak_resampler; // Under audio_measure_mutex.
std::atomic<float> peak{0.0f};
-
- // Under audio_measure_mutex. Note that Ebu_r128_proc has a broken
- // copy constructor (it uses the default, but holds arrays),
- // so we can't just use raw Ebu_r128_proc elements, but need to use
- // unique_ptrs.
- std::vector<std::unique_ptr<Ebu_r128_proc>> bus_r128;
};
#endif // !defined(_AUDIO_MIXER_H)