blob: 3227a9ce9cb2a6303defea26614b6c5a16f36705 [file] [log] [blame]
/* @file
* @brief Internal APIs for Audio Endpoint handling
* Copyright (c) 2020 Intel Corporation
* Copyright (c) 2022 Nordic Semiconductor ASA
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "ascs_internal.h"
#include "stream.h"
#if defined(CONFIG_BT_AUDIO_UNICAST_CLIENT) && defined(CONFIG_BT_AUDIO_UNICAST)
#define UNICAST_GROUP_CNT CONFIG_BT_AUDIO_UNICAST_CLIENT_GROUP_COUNT
#define UNICAST_GROUP_STREAM_CNT CONFIG_BT_AUDIO_UNICAST_CLIENT_GROUP_STREAM_COUNT
#else /* !(CONFIG_BT_AUDIO_UNICAST_CLIENT && CONFIG_BT_AUDIO_UNICAST) */
#define UNICAST_GROUP_CNT 0
#define UNICAST_GROUP_STREAM_CNT 0
#endif /* CONFIG_BT_AUDIO_UNICAST_CLIENT && CONFIG_BT_AUDIO_UNICAST */
#if defined(CONFIG_BT_AUDIO_BROADCAST_SOURCE)
#define BROADCAST_STREAM_CNT CONFIG_BT_AUDIO_BROADCAST_SRC_STREAM_COUNT
#else /* !CONFIG_BT_AUDIO_BROADCAST_SOURCE */
#define BROADCAST_STREAM_CNT 0
#endif /* CONFIG_BT_AUDIO_BROADCAST_SOURCE */
/* Temp struct declarations to handle circular dependencies */
struct bt_audio_unicast_group;
struct bt_audio_broadcast_source;
struct bt_audio_broadcast_sink;
struct bt_audio_ep;
struct bt_audio_iso {
struct bt_iso_chan iso_chan;
struct bt_iso_chan_qos iso_qos;
struct bt_audio_ep *sink_ep;
struct bt_audio_ep *source_ep;
};
struct bt_audio_ep {
uint8_t dir;
uint16_t handle;
uint16_t cp_handle;
uint8_t cig_id;
uint8_t cis_id;
/* ISO sequence number */
uint32_t seq_num;
struct bt_ascs_ase_status status;
struct bt_audio_stream *stream;
struct bt_codec codec;
struct bt_codec_qos qos;
struct bt_codec_qos_pref qos_pref;
struct bt_audio_iso *iso;
struct bt_iso_chan_io_qos iso_io_qos;
struct bt_gatt_subscribe_params subscribe;
struct bt_gatt_discover_params discover;
/* TODO: Create a union to reduce memory usage */
struct bt_audio_unicast_group *unicast_group;
struct bt_audio_broadcast_source *broadcast_source;
struct bt_audio_broadcast_sink *broadcast_sink;
};
struct bt_audio_unicast_group {
bool allocated;
/* QoS used to create the CIG */
struct bt_codec_qos *qos;
struct bt_iso_cig *cig;
/* The ISO API for CIG creation requires an array of pointers to ISO channels */
struct bt_iso_chan *cis[UNICAST_GROUP_STREAM_CNT];
sys_slist_t streams;
};
struct bt_audio_broadcast_source {
uint8_t stream_count;
uint8_t subgroup_count;
uint32_t pd; /** QoS Presentation Delay */
uint32_t broadcast_id; /* 24 bit */
struct bt_le_ext_adv *adv;
struct bt_iso_big *big;
struct bt_iso_chan *bis[BROADCAST_STREAM_CNT];
struct bt_codec_qos *qos;
/* The streams used to create the broadcast source */
struct bt_audio_stream **streams;
};
struct bt_audio_broadcast_sink {
uint8_t index; /* index of broadcast_snks array */
uint8_t stream_count;
uint16_t pa_interval;
uint16_t iso_interval;
uint16_t biginfo_num_bis;
bool biginfo_received;
bool syncing;
bool big_encrypted;
uint32_t broadcast_id; /* 24 bit */
struct bt_audio_base base;
struct bt_le_per_adv_sync *pa_sync;
struct bt_iso_big *big;
struct bt_iso_chan *bis[BROADCAST_SNK_STREAM_CNT];
/* The streams used to create the broadcast sink */
struct bt_audio_stream **streams;
};
static inline const char *bt_audio_ep_state_str(uint8_t state)
{
switch (state) {
case BT_AUDIO_EP_STATE_IDLE:
return "idle";
case BT_AUDIO_EP_STATE_CODEC_CONFIGURED:
return "codec-configured";
case BT_AUDIO_EP_STATE_QOS_CONFIGURED:
return "qos-configured";
case BT_AUDIO_EP_STATE_ENABLING:
return "enabling";
case BT_AUDIO_EP_STATE_STREAMING:
return "streaming";
case BT_AUDIO_EP_STATE_DISABLING:
return "disabling";
case BT_AUDIO_EP_STATE_RELEASING:
return "releasing";
default:
return "unknown";
}
}
bool bt_audio_ep_is_broadcast_snk(const struct bt_audio_ep *ep);
bool bt_audio_ep_is_broadcast_src(const struct bt_audio_ep *ep);