squeezelite-esp32/components/spotify/cspot/bell/main/audio-sinks/include/esp/ES8388AudioSink.h

#ifndef ES8388AUDIOSINK_H
#define ES8388AUDIOSINK_H

#include <driver/i2c.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/unistd.h>
#include <iostream>
#include <vector>
#include "BufferedAudioSink.h"
#include "driver/i2s.h"
#include "esp_err.h"
#include "esp_log.h"

#define ES8388_ADDR 0x20

#define ACK_CHECK_EN 0x1

/* ES8388 register */
#define ES8388_CONTROL1 0x00
#define ES8388_CONTROL2 0x01
#define ES8388_CHIPPOWER 0x02
#define ES8388_ADCPOWER 0x03
#define ES8388_DACPOWER 0x04
#define ES8388_CHIPLOPOW1 0x05
#define ES8388_CHIPLOPOW2 0x06
#define ES8388_ANAVOLMANAG 0x07
#define ES8388_MASTERMODE 0x08

/* ADC */
#define ES8388_ADCCONTROL1 0x09
#define ES8388_ADCCONTROL2 0x0a
#define ES8388_ADCCONTROL3 0x0b
#define ES8388_ADCCONTROL4 0x0c
#define ES8388_ADCCONTROL5 0x0d
#define ES8388_ADCCONTROL6 0x0e
#define ES8388_ADCCONTROL7 0x0f
#define ES8388_ADCCONTROL8 0x10
#define ES8388_ADCCONTROL9 0x11
#define ES8388_ADCCONTROL10 0x12
#define ES8388_ADCCONTROL11 0x13
#define ES8388_ADCCONTROL12 0x14
#define ES8388_ADCCONTROL13 0x15
#define ES8388_ADCCONTROL14 0x16

/* DAC */
#define ES8388_DACCONTROL1 0x17
#define ES8388_DACCONTROL2 0x18
#define ES8388_DACCONTROL3 0x19
#define ES8388_DACCONTROL4 0x1a
#define ES8388_DACCONTROL5 0x1b
#define ES8388_DACCONTROL6 0x1c
#define ES8388_DACCONTROL7 0x1d
#define ES8388_DACCONTROL8 0x1e
#define ES8388_DACCONTROL9 0x1f
#define ES8388_DACCONTROL10 0x20
#define ES8388_DACCONTROL11 0x21
#define ES8388_DACCONTROL12 0x22
#define ES8388_DACCONTROL13 0x23
#define ES8388_DACCONTROL14 0x24
#define ES8388_DACCONTROL15 0x25
#define ES8388_DACCONTROL16 0x26
#define ES8388_DACCONTROL17 0x27
#define ES8388_DACCONTROL18 0x28
#define ES8388_DACCONTROL19 0x29
#define ES8388_DACCONTROL20 0x2a
#define ES8388_DACCONTROL21 0x2b
#define ES8388_DACCONTROL22 0x2c
#define ES8388_DACCONTROL23 0x2d
#define ES8388_DACCONTROL24 0x2e
#define ES8388_DACCONTROL25 0x2f
#define ES8388_DACCONTROL26 0x30
#define ES8388_DACCONTROL27 0x31
#define ES8388_DACCONTROL28 0x32
#define ES8388_DACCONTROL29 0x33
#define ES8388_DACCONTROL30 0x34

class ES8388AudioSink : public BufferedAudioSink {
 public:
  ES8388AudioSink();
  ~ES8388AudioSink();

  bool begin(int sda = -1, int scl = -1, uint32_t frequency = 400000U);

  enum ES8388_OUT {
    ES_MAIN,  // this is the DAC output volume (both outputs)
    ES_OUT1,  // this is the additional gain for OUT1
    ES_OUT2   // this is the additional gain for OUT2
  };

  void mute(const ES8388_OUT out, const bool muted);
  void volume(const ES8388_OUT out, const uint8_t vol);

  void writeReg(uint8_t reg_add, uint8_t data);

 private:
  i2c_config_t i2c_config;
  i2c_port_t i2c_port = I2C_NUM_0;
};

#endif