/**
 * @file audio.h
 * @brief Audio driver for PWM/DAC audio output
 */
#pragma once

#include <stdint.h>
#include "esp_err.h"

#ifdef __cplusplus
extern "C" {
#endif

/* Audio sample rate */
#define AUDIO_SAMPLE_RATE   8000

/* Initialize audio output (PWM for ESP32S3, DAC for ESP32) */
esp_err_t audio_init(int gpio);

/* Play a beep/tone */
void audio_beep(uint16_t freq_hz, uint16_t duration_ms);

/* Play a startup sound */
void audio_play_startup(void);

/* Play a warning beep */
void audio_play_warning(void);

/* Set volume (0-100) */
void audio_set_volume(uint8_t volume);

/* Get current volume */
uint8_t audio_get_volume(void);

/* Audio task for continuous audio playback */
void audio_task(void *pvParameters);

#ifdef __cplusplus
}
#endif