8b8f727761
This allows applications to modify the values set by an existing unicast group, assuming that none of the streams in the CIG has been connected. Signed-off-by: Emil Gydesen <emil.gydesen@nordicsemi.no>
220 lines
6.3 KiB
C
220 lines
6.3 KiB
C
/* @file
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* @brief Internal APIs for Audio Endpoint handling
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* Copyright (c) 2020 Intel Corporation
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* Copyright (c) 2022-2023 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <stdbool.h>
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#include <stdint.h>
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#include <zephyr/autoconf.h>
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#include <zephyr/bluetooth/audio/audio.h>
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#include <zephyr/bluetooth/audio/bap.h>
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#include <zephyr/bluetooth/bluetooth.h>
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#include <zephyr/bluetooth/iso.h>
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#include <zephyr/kernel.h>
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#include <zephyr/sys/atomic.h>
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#include <zephyr/sys/slist.h>
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#include <zephyr/types.h>
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#include "ascs_internal.h"
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#include "bap_stream.h"
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#if defined(CONFIG_BT_BAP_UNICAST_CLIENT)
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#define UNICAST_GROUP_CNT CONFIG_BT_BAP_UNICAST_CLIENT_GROUP_COUNT
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#define UNICAST_GROUP_STREAM_CNT CONFIG_BT_BAP_UNICAST_CLIENT_GROUP_STREAM_COUNT
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#else /* !CONFIG_BT_BAP_UNICAST_CLIENT */
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#define UNICAST_GROUP_CNT 0
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#define UNICAST_GROUP_STREAM_CNT 0
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#endif /* CONFIG_BT_BAP_UNICAST_CLIENT */
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#if defined(CONFIG_BT_BAP_BROADCAST_SOURCE)
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#define BROADCAST_STREAM_CNT CONFIG_BT_BAP_BROADCAST_SRC_STREAM_COUNT
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#else /* !CONFIG_BT_BAP_BROADCAST_SOURCE */
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#define BROADCAST_STREAM_CNT 0
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#endif /* CONFIG_BT_BAP_BROADCAST_SOURCE */
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/* Temp struct declarations to handle circular dependencies */
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struct bt_bap_unicast_group;
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struct bt_bap_broadcast_source;
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struct bt_bap_broadcast_sink;
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struct bt_bap_ep {
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uint8_t dir;
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uint8_t cig_id;
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uint8_t cis_id;
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struct bt_ascs_ase_status status;
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struct bt_bap_stream *stream;
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struct bt_audio_codec_cfg codec_cfg;
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struct bt_audio_codec_qos qos;
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struct bt_audio_codec_qos_pref qos_pref;
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struct bt_bap_iso *iso;
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/* unicast stopped reason */
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uint8_t reason;
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/* Used by the unicast server and client */
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bool receiver_ready;
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/* TODO: Create a union to reduce memory usage */
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struct bt_bap_unicast_group *unicast_group;
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struct bt_bap_broadcast_source *broadcast_source;
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struct bt_bap_broadcast_sink *broadcast_sink;
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};
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struct bt_bap_unicast_group_cig_param {
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uint32_t c_to_p_interval;
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uint32_t p_to_c_interval;
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uint16_t c_to_p_latency;
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uint16_t p_to_c_latency;
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uint8_t framing;
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uint8_t packing;
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#if defined(CONFIG_BT_ISO_TEST_PARAMS)
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uint8_t c_to_p_ft;
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uint8_t p_to_c_ft;
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uint16_t iso_interval;
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#endif /* CONFIG_BT_ISO_TEST_PARAMS */
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};
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struct bt_bap_unicast_group {
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/* Group-wide QoS used to create the CIG */
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struct bt_bap_unicast_group_cig_param cig_param;
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/* Unicast group fields */
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uint8_t index;
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bool allocated;
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/* Used to determine whether any stream in this group has been started which will prevent
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* reconfiguring it
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*/
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bool has_been_connected;
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struct bt_iso_cig *cig;
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/* The ISO API for CIG creation requires an array of pointers to ISO channels */
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struct bt_iso_chan *cis[UNICAST_GROUP_STREAM_CNT];
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sys_slist_t streams;
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};
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#if CONFIG_BT_AUDIO_CODEC_CFG_MAX_DATA_SIZE > 0
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struct bt_audio_broadcast_stream_data {
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/** Codec Specific Data len */
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size_t data_len;
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/** Codec Specific Data */
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uint8_t data[CONFIG_BT_AUDIO_CODEC_CFG_MAX_DATA_SIZE];
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};
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#endif /* CONFIG_BT_AUDIO_CODEC_CFG_MAX_DATA_SIZE > 0 */
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struct bt_bap_broadcast_source {
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uint8_t stream_count;
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uint8_t packing;
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bool encryption;
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uint32_t broadcast_id; /* 24 bit */
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struct bt_iso_big *big;
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struct bt_audio_codec_qos *qos;
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#if defined(CONFIG_BT_ISO_TEST_PARAMS)
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/* Stored advanced parameters */
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uint8_t irc;
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uint8_t pto;
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uint16_t iso_interval;
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#endif /* CONFIG_BT_ISO_TEST_PARAMS */
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#if CONFIG_BT_AUDIO_CODEC_CFG_MAX_DATA_SIZE > 0
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/* The codec specific configured data for each stream in the subgroup */
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struct bt_audio_broadcast_stream_data stream_data[BROADCAST_STREAM_CNT];
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#endif /* CONFIG_BT_AUDIO_CODEC_CFG_MAX_DATA_SIZE > 0 */
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uint8_t broadcast_code[BT_AUDIO_BROADCAST_CODE_SIZE];
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/* The complete codec specific configured data for each stream in the subgroup.
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* This contains both the subgroup and the BIS-specific data for each stream.
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*/
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struct bt_audio_codec_cfg codec_cfg[BROADCAST_STREAM_CNT];
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/* The subgroups containing the streams used to create the broadcast source */
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sys_slist_t subgroups;
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};
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enum bt_bap_broadcast_sink_flag {
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/** Sink has been initialized */
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BT_BAP_BROADCAST_SINK_FLAG_INITIALIZED,
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/** BIGInfo has been received */
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BT_BAP_BROADCAST_SINK_FLAG_BIGINFO_RECEIVED,
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/** Periodic Advertising is syncing */
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BT_BAP_BROADCAST_SINK_FLAG_SYNCING,
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/** Broadcast sink instance is scanning */
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BT_BAP_BROADCAST_SINK_FLAG_SCANNING,
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/** The BIG is encrypted */
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BT_BAP_BROADCAST_SINK_FLAG_BIG_ENCRYPTED,
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/** The Scan Delegator Source ID is valid */
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BT_BAP_BROADCAST_SINK_FLAG_SRC_ID_VALID,
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/** Total number of flags */
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BT_BAP_BROADCAST_SINK_FLAG_NUM_FLAGS,
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};
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struct bt_bap_broadcast_sink_subgroup {
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uint32_t bis_indexes;
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};
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struct bt_bap_broadcast_sink_bis {
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uint8_t index;
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struct bt_iso_chan *chan;
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struct bt_audio_codec_cfg codec_cfg;
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};
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#if defined(CONFIG_BT_BAP_BROADCAST_SINK)
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struct bt_bap_broadcast_sink {
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uint8_t index; /* index of broadcast_snks array */
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uint8_t stream_count;
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uint8_t bass_src_id;
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uint8_t subgroup_count;
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uint16_t iso_interval;
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uint16_t biginfo_num_bis;
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uint32_t broadcast_id; /* 24 bit */
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uint32_t indexes_bitfield;
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uint32_t valid_indexes_bitfield; /* based on codec support */
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struct bt_audio_codec_qos codec_qos;
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struct bt_le_per_adv_sync *pa_sync;
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struct bt_iso_big *big;
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struct bt_bap_broadcast_sink_bis bis[CONFIG_BT_BAP_BROADCAST_SNK_STREAM_COUNT];
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struct bt_bap_broadcast_sink_subgroup subgroups[CONFIG_BT_BAP_BROADCAST_SNK_SUBGROUP_COUNT];
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const struct bt_bap_scan_delegator_recv_state *recv_state;
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/* The streams used to create the broadcast sink */
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sys_slist_t streams;
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/** Flags */
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ATOMIC_DEFINE(flags, BT_BAP_BROADCAST_SINK_FLAG_NUM_FLAGS);
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};
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#endif /* CONFIG_BT_BAP_BROADCAST_SINK */
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static inline const char *bt_bap_ep_state_str(uint8_t state)
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{
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switch (state) {
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case BT_BAP_EP_STATE_IDLE:
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return "idle";
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case BT_BAP_EP_STATE_CODEC_CONFIGURED:
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return "codec-configured";
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case BT_BAP_EP_STATE_QOS_CONFIGURED:
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return "qos-configured";
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case BT_BAP_EP_STATE_ENABLING:
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return "enabling";
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case BT_BAP_EP_STATE_STREAMING:
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return "streaming";
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case BT_BAP_EP_STATE_DISABLING:
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return "disabling";
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case BT_BAP_EP_STATE_RELEASING:
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return "releasing";
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default:
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return "unknown";
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}
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}
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bool bt_bap_ep_is_broadcast_snk(const struct bt_bap_ep *ep);
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bool bt_bap_ep_is_broadcast_src(const struct bt_bap_ep *ep);
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bool bt_bap_ep_is_unicast_client(const struct bt_bap_ep *ep);
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