// aes67_tx: RTP sender task, PTP-paced, pull callback; optional mono sum.
// Core component: must not depend on main/ (project code).
#pragma once

#include <stddef.h>
#include <stdint.h>

#include "esp_err.h"

// Audio source: fill buf with frames x channels interleaved samples (full scale = INT32_MAX).
// Return the number of frames delivered; fewer than asked counts as an underrun (padded with silence).
typedef size_t (*aes67_tx_read_cb_t)(int32_t *buf, size_t frames);

// Registers the "aes67" config group and the TX status fields.
esp_err_t aes67_tx_init(void);
// Start the sender task. Sends while PTP is locked and aes67.enabled is set.
esp_err_t aes67_tx_start(void);
// Set the audio source. NULL = built-in 1 kHz test tone at -18 dBFS, phase-locked to PTP time.
void aes67_tx_set_source(aes67_tx_read_cb_t read);