USBAudioConfig.h

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#pragma once
#include <stdint.h>
 
#include <cstring>
 
#include "AudioTools/CoreAudio/AudioTypes.h"
 
namespace audio_tools {
 
#ifdef STANDALONE_USB
struct USBAudioConfig {
  uint32_t sample_rate = 44100;
  uint8_t channels = 2;
  uint8_t bits_per_sample = 16;
#else
struct USBAudioConfig : public AudioInfo {
#endif
 
  // ── Direction ─────────────────────────────────────────────────────────────
  bool enable_ep_in = true;   
  bool enable_ep_out = true;  
 
  // ── USB endpoint addresses ────────────────────────────────────────────────
  uint8_t ep_in = 0x83;   
  uint8_t ep_out = 0x03;  
  uint8_t ep_fb = 0x84;   
  uint8_t ep_int = 0x85;  
 
  // ── Interface numbering ───────────────────────────────────────────────────
  uint8_t itf_num_ac = 0;
 
  // ── Buffering ─────────────────────────────────────────────────────────────
  uint8_t fifo_packets = 16;
 
  // ── Device identity ───────────────────────────────────────────────────────
  uint16_t vid = 0xCafe;
  uint16_t pid = 0x4002;
  const char* manufacturer = "Audio Tools";
  const char* product = "USB Audio";
  const char* serial = "000001";
  bool self_powered = true;
  uint8_t max_power_ma = 100;
 
  // ── Advanced ──────────────────────────────────────────────────────────────
  bool enable_feedback_ep = true;
 
  bool enable_multi_sample_rate = false;
 
  bool enable_interrupt_ep = false;
 
  bool enable_ep_in_flow_control = true;
 
  bool use_linear_buffer_rx = true;
  bool use_linear_buffer_tx = true;
  // ── Volume Handling ────────────────────────────────────────────────────────
  bool volume_active = false;
 
  // ── ESP32-specific ────────────────────────────────────────────────────────
  bool begin_usb = false;
 
  // ── Zephyr-specific ───────────────────────────────────────────────────────
  uint8_t terminal_id = 1;
 
  bool operator==(const USBAudioConfig& other) {
    return sample_rate == other.sample_rate && channels == other.channels &&
           bits_per_sample == other.bits_per_sample &&
 
           enable_ep_in == other.enable_ep_in &&
           enable_ep_out == other.enable_ep_out &&
 
           ep_in == other.ep_in && ep_out == other.ep_out &&
           ep_fb == other.ep_fb &&
 
           itf_num_ac == other.itf_num_ac &&
           fifo_packets == other.fifo_packets &&
 
           vid == other.vid && pid == other.pid &&
 
           std::strcmp(manufacturer ? manufacturer : "",
                       other.manufacturer ? other.manufacturer : "") == 0 &&
 
           std::strcmp(product ? product : "",
                       other.product ? other.product : "") == 0 &&
 
           std::strcmp(serial ? serial : "",
                       other.serial ? other.serial : "") == 0 &&
 
           self_powered == other.self_powered &&
           max_power_ma == other.max_power_ma &&
 
           enable_feedback_ep == other.enable_feedback_ep &&
           enable_ep_in_flow_control == other.enable_ep_in_flow_control &&
           use_linear_buffer_rx == other.use_linear_buffer_rx &&
           use_linear_buffer_tx == other.use_linear_buffer_tx &&
 
           begin_usb == other.begin_usb && terminal_id == other.terminal_id;
  }
 
  bool operator!=(const USBAudioConfig& other) { return !(*this == other); }
};
 
}  // namespace audio_tools