blob: ae878c19f02e283a7ac83ca7d5c2016f82f8b20f [file] [log] [blame]
/** @file
* @brief Advance Audio Distribution Profile.
*/
/*
* Copyright (c) 2015-2016 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/kernel.h>
#include <string.h>
#include <errno.h>
#include <zephyr/sys/atomic.h>
#include <zephyr/sys/byteorder.h>
#include <zephyr/sys/util.h>
#include <zephyr/sys/printk.h>
#include <zephyr/bluetooth/bluetooth.h>
#include <zephyr/bluetooth/l2cap.h>
#include <zephyr/bluetooth/avdtp.h>
#include <zephyr/bluetooth/a2dp.h>
#define BT_DBG_ENABLED IS_ENABLED(CONFIG_BT_DEBUG_A2DP)
#define LOG_MODULE_NAME bt_a2dp
#include "common/log.h"
#include "hci_core.h"
#include "conn_internal.h"
#include "avdtp_internal.h"
#include "a2dp_internal.h"
#define A2DP_NO_SPACE (-1)
struct bt_a2dp {
struct bt_avdtp session;
};
/* Connections */
static struct bt_a2dp connection[CONFIG_BT_MAX_CONN];
void a2d_reset(struct bt_a2dp *a2dp_conn)
{
(void)memset(a2dp_conn, 0, sizeof(struct bt_a2dp));
}
struct bt_a2dp *get_new_connection(struct bt_conn *conn)
{
int8_t i, free;
free = A2DP_NO_SPACE;
if (!conn) {
BT_ERR("Invalid Input (err: %d)", -EINVAL);
return NULL;
}
/* Find a space */
for (i = 0; i < CONFIG_BT_MAX_CONN; i++) {
if (connection[i].session.br_chan.chan.conn == conn) {
BT_DBG("Conn already exists");
return NULL;
}
if (!connection[i].session.br_chan.chan.conn &&
free == A2DP_NO_SPACE) {
free = i;
}
}
if (free == A2DP_NO_SPACE) {
BT_DBG("More connection cannot be supported");
return NULL;
}
/* Clean the memory area before returning */
a2d_reset(&connection[free]);
return &connection[free];
}
int a2dp_accept(struct bt_conn *conn, struct bt_avdtp **session)
{
struct bt_a2dp *a2dp_conn;
a2dp_conn = get_new_connection(conn);
if (!a2dp_conn) {
return -ENOMEM;
}
*session = &(a2dp_conn->session);
BT_DBG("session: %p", &(a2dp_conn->session));
return 0;
}
/* Callback for incoming requests */
static struct bt_avdtp_ind_cb cb_ind = {
/*TODO*/
};
/* The above callback structures need to be packed and passed to AVDTP */
static struct bt_avdtp_event_cb avdtp_cb = {
.ind = &cb_ind,
.accept = a2dp_accept
};
int bt_a2dp_init(void)
{
int err;
/* Register event handlers with AVDTP */
err = bt_avdtp_register(&avdtp_cb);
if (err < 0) {
BT_ERR("A2DP registration failed");
return err;
}
BT_DBG("A2DP Initialized successfully.");
return 0;
}
struct bt_a2dp *bt_a2dp_connect(struct bt_conn *conn)
{
struct bt_a2dp *a2dp_conn;
int err;
a2dp_conn = get_new_connection(conn);
if (!a2dp_conn) {
BT_ERR("Cannot allocate memory");
return NULL;
}
err = bt_avdtp_connect(conn, &(a2dp_conn->session));
if (err < 0) {
/* If error occurs, undo the saving and return the error */
a2d_reset(a2dp_conn);
BT_DBG("AVDTP Connect failed");
return NULL;
}
BT_DBG("Connect request sent");
return a2dp_conn;
}
int bt_a2dp_register_endpoint(struct bt_a2dp_endpoint *endpoint,
uint8_t media_type, uint8_t role)
{
int err;
BT_ASSERT(endpoint);
err = bt_avdtp_register_sep(media_type, role, &(endpoint->info));
if (err < 0) {
return err;
}
/* TODO: Register SDP record */
return 0;
}