meter.h

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// SPDX-FileCopyrightText: © 2020 Alexandros Theodotou <alex@zrythm.org>
// SPDX-License-Identifier: LicenseRef-ZrythmLicense
 
#ifndef __AUDIO_METER_H__
#define __AUDIO_METER_H__
 
#include "utils/types.h"
 
#include "gtk_wrapper.h"
 
typedef struct TruePeakDsp TruePeakDsp;
typedef struct KMeterDsp   KMeterDsp;
typedef struct PeakDsp     PeakDsp;
typedef struct Port        Port;
 
enum class MeterAlgorithm
{
  METER_ALGORITHM_AUTO,
 
  METER_ALGORITHM_DIGITAL_PEAK,
 
  METER_ALGORITHM_TRUE_PEAK,
  METER_ALGORITHM_RMS,
  METER_ALGORITHM_K,
};
 
typedef struct Meter
{
  Port * port;
 
  TruePeakDsp * true_peak_processor;
  TruePeakDsp * true_peak_max_processor;
 
  float true_peak;
  float true_peak_max;
 
  KMeterDsp * kmeter_processor;
 
  PeakDsp * peak_processor;
 
  MeterAlgorithm algorithm;
 
  float prev_max;
 
  float last_amp;
 
  gint64 last_draw_time;
 
  gint64 last_midi_trigger_time;
 
} Meter;
 
Meter *
meter_new_for_port (Port * port);
 
void
meter_get_value (Meter * self, AudioValueFormat format, float * val, float * max);
 
void
meter_free (Meter * self);
 
#endif