include/zephyr/bluetooth/audio/audio.h

/** @file
 *  @brief Bluetooth Audio handling
 */

/*
 * Copyright (c) 2020 Intel Corporation
 * Copyright (c) 2020-2023 Nordic Semiconductor ASA
 *
 * SPDX-License-Identifier: Apache-2.0
 */
#ifndef ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_AUDIO_H_
#define ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_AUDIO_H_

/**
 * @brief Bluetooth Audio
 * @defgroup bt_audio Bluetooth Audio
 * @ingroup bluetooth
 * @{
 */

#include <zephyr/sys/atomic.h>
#include <zephyr/bluetooth/buf.h>
#include <zephyr/bluetooth/conn.h>
#include <zephyr/bluetooth/hci.h>
#include <zephyr/bluetooth/iso.h>
#include <zephyr/bluetooth/gatt.h>
#include <zephyr/bluetooth/audio/lc3.h>


#ifdef __cplusplus
extern "C" {
#endif

#define BT_AUDIO_BROADCAST_ID_SIZE               3 /* octets */
/** Maximum broadcast ID value */
#define BT_AUDIO_BROADCAST_ID_MAX                0xFFFFFFU
/** Indicates that the server have no preference for the presentation delay */
#define BT_AUDIO_PD_PREF_NONE                    0x000000U
/** Maximum presentation delay in microseconds */
#define BT_AUDIO_PD_MAX                          0xFFFFFFU

#define BT_AUDIO_BROADCAST_CODE_SIZE             16

/**
 * @brief Codec capability types
 *
 * Used to build and parse codec capabilities as specified in the PAC specification.
 * Source is assigned numbers for Generic Audio, bluetooth.com.
 */
enum bt_audio_codec_cap_type {
	/** Supported sampling frequencies */
	BT_AUDIO_CODEC_CAP_TYPE_FREQ = 0x01,

	/** Supported frame durations */
	BT_AUDIO_CODEC_CAP_TYPE_DURATION = 0x02,

	/** Supported audio channel counts */
	BT_AUDIO_CODEC_CAP_TYPE_CHAN_COUNT = 0x03,

	/** Supported octets per codec frame */
	BT_AUDIO_CODEC_CAP_TYPE_FRAME_LEN = 0x04,

	/** Supported maximum codec frames per SDU  */
	BT_AUDIO_CODEC_CAP_TYPE_FRAME_COUNT = 0x05,
};

/** @brief Supported frequencies bitfield */
enum bt_audio_codec_cap_freq {
	/** 8 Khz sampling frequency */
	BT_AUDIO_CODEC_CAP_FREQ_8KHZ = BIT(0),

	/** 11.025 Khz sampling frequency */
	BT_AUDIO_CODEC_CAP_FREQ_11KHZ = BIT(1),

	/** 16 Khz sampling frequency */
	BT_AUDIO_CODEC_CAP_FREQ_16KHZ = BIT(2),

	/** 22.05 Khz sampling frequency */
	BT_AUDIO_CODEC_CAP_FREQ_22KHZ = BIT(3),

	/** 24 Khz sampling frequency */
	BT_AUDIO_CODEC_CAP_FREQ_24KHZ = BIT(4),

	/** 32 Khz sampling frequency */
	BT_AUDIO_CODEC_CAP_FREQ_32KHZ = BIT(5),

	/** 44.1 Khz sampling frequency */
	BT_AUDIO_CODEC_CAP_FREQ_44KHZ = BIT(6),

	/** 48 Khz sampling frequency */
	BT_AUDIO_CODEC_CAP_FREQ_48KHZ = BIT(7),

	/** 88.2 Khz sampling frequency */
	BT_AUDIO_CODEC_CAP_FREQ_88KHZ = BIT(8),

	/** 96 Khz sampling frequency */
	BT_AUDIO_CODEC_CAP_FREQ_96KHZ = BIT(9),

	/** 176.4 Khz sampling frequency */
	BT_AUDIO_CODEC_CAP_FREQ_176KHZ = BIT(10),

	/** 192 Khz sampling frequency */
	BT_AUDIO_CODEC_CAP_FREQ_192KHZ = BIT(11),

	/** 384 Khz sampling frequency */
	BT_AUDIO_CODEC_CAP_FREQ_384KHZ = BIT(12),

	/** Any frequency capability */
	BT_AUDIO_CODEC_CAP_FREQ_ANY =
		(BT_AUDIO_CODEC_CAP_FREQ_8KHZ | BT_AUDIO_CODEC_CAP_FREQ_11KHZ |
		 BT_AUDIO_CODEC_CAP_FREQ_16KHZ | BT_AUDIO_CODEC_CAP_FREQ_22KHZ |
		 BT_AUDIO_CODEC_CAP_FREQ_24KHZ | BT_AUDIO_CODEC_CAP_FREQ_32KHZ |
		 BT_AUDIO_CODEC_CAP_FREQ_44KHZ | BT_AUDIO_CODEC_CAP_FREQ_48KHZ |
		 BT_AUDIO_CODEC_CAP_FREQ_88KHZ | BT_AUDIO_CODEC_CAP_FREQ_96KHZ |
		 BT_AUDIO_CODEC_CAP_FREQ_176KHZ | BT_AUDIO_CODEC_CAP_FREQ_192KHZ |
		 BT_AUDIO_CODEC_CAP_FREQ_384KHZ),
};

/** @brief Supported frame durations bitfield */
enum bt_audio_codec_cap_frame_dur {
	/** 7.5 msec frame duration capability */
	BT_AUDIO_CODEC_CAP_DURATION_7_5 = BIT(0),

	/** 10 msec frame duration capability */
	BT_AUDIO_CODEC_CAP_DURATION_10 = BIT(1),

	/** Any frame duration capability */
	BT_AUDIO_CODEC_CAP_DURATION_ANY =
		(BT_AUDIO_CODEC_CAP_DURATION_7_5 | BT_AUDIO_CODEC_CAP_DURATION_10),

	/**
	 * @brief 7.5 msec preferred frame duration capability.
	 *
	 * This shall only be set if @ref BT_AUDIO_CODEC_CAP_DURATION_7_5 is also set, and if @ref
	 * BT_AUDIO_CODEC_CAP_DURATION_PREFER_10 is not set.
	 */
	BT_AUDIO_CODEC_CAP_DURATION_PREFER_7_5 = BIT(4),

	/**
	 * @brief 10 msec preferred frame duration capability
	 *
	 * This shall only be set if @ref BT_AUDIO_CODEC_CAP_DURATION_10 is also set, and if @ref
	 * BT_AUDIO_CODEC_CAP_DURATION_PREFER_7_5 is not set.
	 */
	BT_AUDIO_CODEC_CAP_DURATION_PREFER_10 = BIT(5),
};

enum bt_audio_codec_cap_chan_count {
	/** Supporting 1 channel */
	BT_AUDIO_CODEC_CAP_CHAN_COUNT_1 = BIT(0),

	/** Supporting 2 channel */
	BT_AUDIO_CODEC_CAP_CHAN_COUNT_2 = BIT(1),

	/** Supporting 3 channel */
	BT_AUDIO_CODEC_CAP_CHAN_COUNT_3 = BIT(2),

	/** Supporting 4 channel */
	BT_AUDIO_CODEC_CAP_CHAN_COUNT_4 = BIT(3),

	/** Supporting 5 channel */
	BT_AUDIO_CODEC_CAP_CHAN_COUNT_5 = BIT(4),

	/** Supporting 6 channel */
	BT_AUDIO_CODEC_CAP_CHAN_COUNT_6 = BIT(5),

	/** Supporting 7 channel */
	BT_AUDIO_CODEC_CAP_CHAN_COUNT_7 = BIT(6),

	/** Supporting 8 channel */
	BT_AUDIO_CODEC_CAP_CHAN_COUNT_8 = BIT(7),

	/** Supporting all channels */
	BT_AUDIO_CODEC_CAP_CHAN_COUNT_ANY =
		(BT_AUDIO_CODEC_CAP_CHAN_COUNT_1 | BT_AUDIO_CODEC_CAP_CHAN_COUNT_2 |
		 BT_AUDIO_CODEC_CAP_CHAN_COUNT_3 | BT_AUDIO_CODEC_CAP_CHAN_COUNT_4 |
		 BT_AUDIO_CODEC_CAP_CHAN_COUNT_5 | BT_AUDIO_CODEC_CAP_CHAN_COUNT_6 |
		 BT_AUDIO_CODEC_CAP_CHAN_COUNT_7 | BT_AUDIO_CODEC_CAP_CHAN_COUNT_8),
};

/** Minimum supported channel counts */
#define BT_AUDIO_CODEC_CAP_CHAN_COUNT_MIN 1
/** Maximum supported channel counts */
#define BT_AUDIO_CODEC_CAP_CHAN_COUNT_MAX 8

/**
 *  @brief Channel count support capability
 *
 *  Macro accepts variable number of channel counts.
 *  The allowed channel counts are defined by specification and have to be in range from
 *  @ref BT_AUDIO_CODEC_CAP_CHAN_COUNT_MIN to @ref BT_AUDIO_CODEC_CAP_CHAN_COUNT_MAX inclusive.
 *
 *  Example to support 1 and 3 channels:
 *    BT_AUDIO_CODEC_CAP_CHAN_COUNT_SUPPORT(1, 3)
 */
#define BT_AUDIO_CODEC_CAP_CHAN_COUNT_SUPPORT(...)                                                 \
	((enum bt_audio_codec_cap_chan_count)((FOR_EACH(BIT, (|), __VA_ARGS__)) >> 1))

struct bt_audio_codec_octets_per_codec_frame {
	/** Minimum number of octets supported per codec frame */
	uint16_t min;
	/** Maximum number of octets supported per codec frame */
	uint16_t max;
};

/**
 * @brief Codec configuration types
 *
 * Used to build and parse codec configurations as specified in the ASCS and BAP specifications.
 * Source is assigned numbers for Generic Audio, bluetooth.com.
 */
enum bt_audio_codec_cfg_type {
	/** Sampling frequency */
	BT_AUDIO_CODEC_CFG_FREQ = 0x01,

	/** Frame duration */
	BT_AUDIO_CODEC_CFG_DURATION = 0x02,

	/** Audio channel allocation */
	BT_AUDIO_CODEC_CFG_CHAN_ALLOC = 0x03,

	/** Octets per codec frame */
	BT_AUDIO_CODEC_CFG_FRAME_LEN = 0x04,

	/** Codec frame blocks per SDU */
	BT_AUDIO_CODEC_CFG_FRAME_BLKS_PER_SDU = 0x05,
};

enum bt_audio_codec_cfg_freq {
	/** 8 Khz codec sampling frequency */
	BT_AUDIO_CODEC_CFG_FREQ_8KHZ = 0x01,

	/** 11.025 Khz codec sampling frequency */
	BT_AUDIO_CODEC_CFG_FREQ_11KHZ = 0x02,

	/** 16 Khz codec sampling frequency */
	BT_AUDIO_CODEC_CFG_FREQ_16KHZ = 0x03,

	/** 22.05 Khz codec sampling frequency */
	BT_AUDIO_CODEC_CFG_FREQ_22KHZ = 0x04,

	/** 24 Khz codec sampling frequency */
	BT_AUDIO_CODEC_CFG_FREQ_24KHZ = 0x05,

	/** 32 Khz codec sampling frequency */
	BT_AUDIO_CODEC_CFG_FREQ_32KHZ = 0x06,

	/** 44.1 Khz codec sampling frequency */
	BT_AUDIO_CODEC_CFG_FREQ_44KHZ = 0x07,

	/** 48 Khz codec sampling frequency */
	BT_AUDIO_CODEC_CFG_FREQ_48KHZ = 0x08,

	/** 88.2 Khz codec sampling frequency */
	BT_AUDIO_CODEC_CFG_FREQ_88KHZ = 0x09,

	/** 96 Khz codec sampling frequency */
	BT_AUDIO_CODEC_CFG_FREQ_96KHZ = 0x0a,

	/** 176.4 Khz codec sampling frequency */
	BT_AUDIO_CODEC_CFG_FREQ_176KHZ = 0x0b,

	/** 192 Khz codec sampling frequency */
	BT_AUDIO_CODEC_CFG_FREQ_192KHZ = 0x0c,

	/** 384 Khz codec sampling frequency */
	BT_AUDIO_CODEC_CFG_FREQ_384KHZ = 0x0d,
};

enum bt_audio_codec_cfg_frame_dur {
	/** 7.5 msec Frame Duration configuration */
	BT_AUDIO_CODEC_CFG_DURATION_7_5 = 0x00,

	/** 10 msec Frame Duration configuration */
	BT_AUDIO_CODEC_CFG_DURATION_10 = 0x01,
};

/** @brief Audio Context Type for Generic Audio
 *
 * These values are defined by the Generic Audio Assigned Numbers, bluetooth.com
 */
enum bt_audio_context {
	BT_AUDIO_CONTEXT_TYPE_PROHIBITED = 0,
	BT_AUDIO_CONTEXT_TYPE_UNSPECIFIED = BIT(0),
	BT_AUDIO_CONTEXT_TYPE_CONVERSATIONAL = BIT(1),
	BT_AUDIO_CONTEXT_TYPE_MEDIA = BIT(2),
	BT_AUDIO_CONTEXT_TYPE_GAME = BIT(3),
	BT_AUDIO_CONTEXT_TYPE_INSTRUCTIONAL = BIT(4),
	BT_AUDIO_CONTEXT_TYPE_VOICE_ASSISTANTS = BIT(5),
	BT_AUDIO_CONTEXT_TYPE_LIVE = BIT(6),
	BT_AUDIO_CONTEXT_TYPE_SOUND_EFFECTS = BIT(7),
	BT_AUDIO_CONTEXT_TYPE_NOTIFICATIONS = BIT(8),
	BT_AUDIO_CONTEXT_TYPE_RINGTONE = BIT(9),
	BT_AUDIO_CONTEXT_TYPE_ALERTS = BIT(10),
	BT_AUDIO_CONTEXT_TYPE_EMERGENCY_ALARM = BIT(11),
};

/**
 * Any known context.
 */
#define BT_AUDIO_CONTEXT_TYPE_ANY	 (BT_AUDIO_CONTEXT_TYPE_UNSPECIFIED | \
					  BT_AUDIO_CONTEXT_TYPE_CONVERSATIONAL | \
					  BT_AUDIO_CONTEXT_TYPE_MEDIA | \
					  BT_AUDIO_CONTEXT_TYPE_GAME | \
					  BT_AUDIO_CONTEXT_TYPE_INSTRUCTIONAL | \
					  BT_AUDIO_CONTEXT_TYPE_VOICE_ASSISTANTS | \
					  BT_AUDIO_CONTEXT_TYPE_LIVE | \
					  BT_AUDIO_CONTEXT_TYPE_SOUND_EFFECTS | \
					  BT_AUDIO_CONTEXT_TYPE_NOTIFICATIONS | \
					  BT_AUDIO_CONTEXT_TYPE_RINGTONE | \
					  BT_AUDIO_CONTEXT_TYPE_ALERTS | \
					  BT_AUDIO_CONTEXT_TYPE_EMERGENCY_ALARM)

/**
 * @brief Parental rating defined by the Generic Audio assigned numbers (bluetooth.com).
 *
 * The numbering scheme is aligned with Annex F of EN 300 707 v1.2.1 which
 * defined parental rating for viewing.
 */
enum bt_audio_parental_rating {
	BT_AUDIO_PARENTAL_RATING_NO_RATING        = 0x00,
	BT_AUDIO_PARENTAL_RATING_AGE_ANY          = 0x01,
	BT_AUDIO_PARENTAL_RATING_AGE_5_OR_ABOVE   = 0x02,
	BT_AUDIO_PARENTAL_RATING_AGE_6_OR_ABOVE   = 0x03,
	BT_AUDIO_PARENTAL_RATING_AGE_7_OR_ABOVE   = 0x04,
	BT_AUDIO_PARENTAL_RATING_AGE_8_OR_ABOVE   = 0x05,
	BT_AUDIO_PARENTAL_RATING_AGE_9_OR_ABOVE   = 0x06,
	BT_AUDIO_PARENTAL_RATING_AGE_10_OR_ABOVE  = 0x07,
	BT_AUDIO_PARENTAL_RATING_AGE_11_OR_ABOVE  = 0x08,
	BT_AUDIO_PARENTAL_RATING_AGE_12_OR_ABOVE  = 0x09,
	BT_AUDIO_PARENTAL_RATING_AGE_13_OR_ABOVE  = 0x0A,
	BT_AUDIO_PARENTAL_RATING_AGE_14_OR_ABOVE  = 0x0B,
	BT_AUDIO_PARENTAL_RATING_AGE_15_OR_ABOVE  = 0x0C,
	BT_AUDIO_PARENTAL_RATING_AGE_16_OR_ABOVE  = 0x0D,
	BT_AUDIO_PARENTAL_RATING_AGE_17_OR_ABOVE  = 0x0E,
	BT_AUDIO_PARENTAL_RATING_AGE_18_OR_ABOVE  = 0x0F
};

/** @brief Audio Active State defined by the Generic Audio assigned numbers (bluetooth.com). */
enum bt_audio_active_state {
	BT_AUDIO_ACTIVE_STATE_DISABLED       = 0x00,
	BT_AUDIO_ACTIVE_STATE_ENABLED        = 0x01,
};

/**
 * @brief Codec metadata type IDs
 *
 * Metadata types defined by the Generic Audio assigned numbers (bluetooth.com).
 */
enum bt_audio_metadata_type {
	/** @brief Preferred audio context.
	 *
	 * Bitfield of preferred audio contexts.
	 *
	 * If 0, the context type is not a preferred use case for this codec
	 * configuration.
	 *
	 * See the BT_AUDIO_CONTEXT_* for valid values.
	 */
	BT_AUDIO_METADATA_TYPE_PREF_CONTEXT        = 0x01,

	/** @brief Streaming audio context.
	 *
	 * Bitfield of streaming audio contexts.
	 *
	 * If 0, the context type is not a preferred use case for this codec
	 * configuration.
	 *
	 * See the BT_AUDIO_CONTEXT_* for valid values.
	 */
	BT_AUDIO_METADATA_TYPE_STREAM_CONTEXT      = 0x02,

	/** UTF-8 encoded title or summary of stream content */
	BT_AUDIO_METADATA_TYPE_PROGRAM_INFO        = 0x03,

	/** @brief Stream language
	 *
	 * 3 octet lower case language code defined by ISO 639-3
	 */
	BT_AUDIO_METADATA_TYPE_STREAM_LANG         = 0x04,

	/** Array of 8-bit CCID values */
	BT_AUDIO_METADATA_TYPE_CCID_LIST           = 0x05,

	/** @brief Parental rating
	 *
	 * See @ref bt_audio_parental_rating for valid values.
	 */
	BT_AUDIO_METADATA_TYPE_PARENTAL_RATING     = 0x06,

	/** UTF-8 encoded URI for additional Program information */
	BT_AUDIO_METADATA_TYPE_PROGRAM_INFO_URI    = 0x07,

	/** @brief Audio active state
	 *
	 * See @ref bt_audio_active_state for valid values.
	 */
	BT_AUDIO_METADATA_TYPE_AUDIO_STATE         = 0x08,

	/** Broadcast Audio Immediate Rendering flag  */
	BT_AUDIO_METADATA_TYPE_BROADCAST_IMMEDIATE = 0x09,

	/** Extended metadata */
	BT_AUDIO_METADATA_TYPE_EXTENDED            = 0xFE,

	/** Vendor specific metadata */
	BT_AUDIO_METADATA_TYPE_VENDOR              = 0xFF,
};

/**
 * @brief Helper to check whether metadata type is known by the stack.
 *
 * @note @p _type is evaluated thrice.
 */
#define BT_AUDIO_METADATA_TYPE_IS_KNOWN(_type)                                                     \
	(IN_RANGE((_type), BT_AUDIO_METADATA_TYPE_PREF_CONTEXT,                                    \
		  BT_AUDIO_METADATA_TYPE_BROADCAST_IMMEDIATE) ||                                   \
	 (_type) == BT_AUDIO_METADATA_TYPE_EXTENDED || (_type) == BT_AUDIO_METADATA_TYPE_VENDOR)

/* Unicast Announcement Type, Generic Audio */
#define BT_AUDIO_UNICAST_ANNOUNCEMENT_GENERAL    0x00
#define BT_AUDIO_UNICAST_ANNOUNCEMENT_TARGETED   0x01

/**
 * @brief Helper to declare elements of bt_audio_codec_cap arrays
 *
 * This macro is mainly for creating an array of struct bt_audio_codec_cap data arrays.
 *
 * @param _type Type of advertising data field
 * @param _bytes Variable number of single-byte parameters
 */
#define BT_AUDIO_CODEC_DATA(_type, _bytes...)                                                      \
	(sizeof((uint8_t)_type) + sizeof((uint8_t[]){_bytes})), (_type), _bytes

/**
 *  @brief Helper to declare @ref bt_audio_codec_cfg
 *
 *  @param _id Codec ID
 *  @param _cid Company ID
 *  @param _vid Vendor ID
 *  @param _data Codec Specific Data in LVT format
 *  @param _meta Codec Specific Metadata in LVT format
 */
#define BT_AUDIO_CODEC_CFG(_id, _cid, _vid, _data, _meta)                                          \
	((struct bt_audio_codec_cfg){                                                              \
		/* Use HCI data path as default, can be overwritten by application */              \
		.path_id = BT_ISO_DATA_PATH_HCI,                                                   \
		.ctlr_transcode = false,                                                           \
		.id = _id,                                                                         \
		.cid = _cid,                                                                       \
		.vid = _vid,                                                                       \
		.data_len = sizeof((uint8_t[])_data),                                              \
		.data = _data,                                                                     \
		.meta_len = sizeof((uint8_t[])_meta),                                              \
		.meta = _meta,                                                                     \
	})

/**
 *  @brief Helper to declare @ref bt_audio_codec_cap structure
 *
 *  @param _id Codec ID
 *  @param _cid Company ID
 *  @param _vid Vendor ID
 *  @param _data Codec Specific Data in LVT format
 *  @param _meta Codec Specific Metadata in LVT format
 */
#define BT_AUDIO_CODEC_CAP(_id, _cid, _vid, _data, _meta)                                          \
	((struct bt_audio_codec_cap){                                                              \
		/* Use HCI data path as default, can be overwritten by application */              \
		.path_id = BT_ISO_DATA_PATH_HCI,                                                   \
		.ctlr_transcode = false,                                                           \
		.id = (_id),                                                                       \
		.cid = (_cid),                                                                     \
		.vid = (_vid),                                                                     \
		.data_len = sizeof((uint8_t[])_data),                                              \
		.data = _data,                                                                     \
		.meta_len = sizeof((uint8_t[])_meta),                                              \
		.meta = _meta,                                                                     \
	})

/** @brief Location values for BT Audio.
 *
 * These values are defined by the Generic Audio Assigned Numbers, bluetooth.com
 */
enum bt_audio_location {
	BT_AUDIO_LOCATION_MONO_AUDIO = 0,
	BT_AUDIO_LOCATION_FRONT_LEFT = BIT(0),
	BT_AUDIO_LOCATION_FRONT_RIGHT = BIT(1),
	BT_AUDIO_LOCATION_FRONT_CENTER = BIT(2),
	BT_AUDIO_LOCATION_LOW_FREQ_EFFECTS_1 = BIT(3),
	BT_AUDIO_LOCATION_BACK_LEFT = BIT(4),
	BT_AUDIO_LOCATION_BACK_RIGHT = BIT(5),
	BT_AUDIO_LOCATION_FRONT_LEFT_OF_CENTER = BIT(6),
	BT_AUDIO_LOCATION_FRONT_RIGHT_OF_CENTER = BIT(7),
	BT_AUDIO_LOCATION_BACK_CENTER = BIT(8),
	BT_AUDIO_LOCATION_LOW_FREQ_EFFECTS_2 = BIT(9),
	BT_AUDIO_LOCATION_SIDE_LEFT = BIT(10),
	BT_AUDIO_LOCATION_SIDE_RIGHT = BIT(11),
	BT_AUDIO_LOCATION_TOP_FRONT_LEFT = BIT(12),
	BT_AUDIO_LOCATION_TOP_FRONT_RIGHT = BIT(13),
	BT_AUDIO_LOCATION_TOP_FRONT_CENTER = BIT(14),
	BT_AUDIO_LOCATION_TOP_CENTER = BIT(15),
	BT_AUDIO_LOCATION_TOP_BACK_LEFT = BIT(16),
	BT_AUDIO_LOCATION_TOP_BACK_RIGHT = BIT(17),
	BT_AUDIO_LOCATION_TOP_SIDE_LEFT = BIT(18),
	BT_AUDIO_LOCATION_TOP_SIDE_RIGHT = BIT(19),
	BT_AUDIO_LOCATION_TOP_BACK_CENTER = BIT(20),
	BT_AUDIO_LOCATION_BOTTOM_FRONT_CENTER = BIT(21),
	BT_AUDIO_LOCATION_BOTTOM_FRONT_LEFT = BIT(22),
	BT_AUDIO_LOCATION_BOTTOM_FRONT_RIGHT = BIT(23),
	BT_AUDIO_LOCATION_FRONT_LEFT_WIDE = BIT(24),
	BT_AUDIO_LOCATION_FRONT_RIGHT_WIDE = BIT(25),
	BT_AUDIO_LOCATION_LEFT_SURROUND = BIT(26),
	BT_AUDIO_LOCATION_RIGHT_SURROUND = BIT(27),
};

/**
 * Any known location.
 */
#define BT_AUDIO_LOCATION_ANY (BT_AUDIO_LOCATION_FRONT_LEFT | \
			       BT_AUDIO_LOCATION_FRONT_RIGHT | \
			       BT_AUDIO_LOCATION_FRONT_CENTER | \
			       BT_AUDIO_LOCATION_LOW_FREQ_EFFECTS_1 | \
			       BT_AUDIO_LOCATION_BACK_LEFT | \
			       BT_AUDIO_LOCATION_BACK_RIGHT | \
			       BT_AUDIO_LOCATION_FRONT_LEFT_OF_CENTER | \
			       BT_AUDIO_LOCATION_FRONT_RIGHT_OF_CENTER | \
			       BT_AUDIO_LOCATION_BACK_CENTER | \
			       BT_AUDIO_LOCATION_LOW_FREQ_EFFECTS_2 | \
			       BT_AUDIO_LOCATION_SIDE_LEFT | \
			       BT_AUDIO_LOCATION_SIDE_RIGHT | \
			       BT_AUDIO_LOCATION_TOP_FRONT_LEFT | \
			       BT_AUDIO_LOCATION_TOP_FRONT_RIGHT | \
			       BT_AUDIO_LOCATION_TOP_FRONT_CENTER | \
			       BT_AUDIO_LOCATION_TOP_CENTER | \
			       BT_AUDIO_LOCATION_TOP_BACK_LEFT | \
			       BT_AUDIO_LOCATION_TOP_BACK_RIGHT | \
			       BT_AUDIO_LOCATION_TOP_SIDE_LEFT | \
			       BT_AUDIO_LOCATION_TOP_SIDE_RIGHT | \
			       BT_AUDIO_LOCATION_TOP_BACK_CENTER | \
			       BT_AUDIO_LOCATION_BOTTOM_FRONT_CENTER | \
			       BT_AUDIO_LOCATION_BOTTOM_FRONT_LEFT | \
			       BT_AUDIO_LOCATION_BOTTOM_FRONT_RIGHT | \
			       BT_AUDIO_LOCATION_FRONT_LEFT_WIDE | \
			       BT_AUDIO_LOCATION_FRONT_RIGHT_WIDE | \
			       BT_AUDIO_LOCATION_LEFT_SURROUND | \
			       BT_AUDIO_LOCATION_RIGHT_SURROUND)

/** @brief Codec capability structure. */
struct bt_audio_codec_cap {
	/** Data path ID
	 *
	 * @ref BT_ISO_DATA_PATH_HCI for HCI path, or any other value for
	 * vendor specific ID.
	 */
	uint8_t path_id;
	/** Whether or not the local controller should transcode
	 *
	 * This effectively sets the coding format for the ISO data path to @ref
	 * BT_HCI_CODING_FORMAT_TRANSPARENT if false, else uses the @ref bt_audio_codec_cfg.id.
	 */
	bool ctlr_transcode;
	/** Codec ID */
	uint8_t id;
	/** Codec Company ID */
	uint16_t cid;
	/** Codec Company Vendor ID */
	uint16_t vid;
#if CONFIG_BT_AUDIO_CODEC_CAP_MAX_DATA_SIZE > 0
	/** Codec Specific Capabilities Data count */
	size_t data_len;
	/** Codec Specific Capabilities Data */
	uint8_t data[CONFIG_BT_AUDIO_CODEC_CAP_MAX_DATA_SIZE];
#endif /* CONFIG_BT_AUDIO_CODEC_CAP_MAX_DATA_SIZE > 0 */
#if defined(CONFIG_BT_AUDIO_CODEC_CAP_MAX_METADATA_SIZE)
	/** Codec Specific Capabilities Metadata count */
	size_t meta_len;
	/** Codec Specific Capabilities Metadata */
	uint8_t meta[CONFIG_BT_AUDIO_CODEC_CAP_MAX_METADATA_SIZE];
#endif /* CONFIG_BT_AUDIO_CODEC_CAP_MAX_METADATA_SIZE */
};

/** @brief Codec specific configuration structure. */
struct bt_audio_codec_cfg {
	/** Data path ID
	 *
	 * @ref BT_ISO_DATA_PATH_HCI for HCI path, or any other value for
	 * vendor specific ID.
	 */
	uint8_t path_id;
	/** Whether or not the local controller should transcode
	 *
	 * This effectively sets the coding format for the ISO data path to @ref
	 * BT_HCI_CODING_FORMAT_TRANSPARENT if false, else uses the @ref bt_audio_codec_cfg.id.
	 */
	bool ctlr_transcode;
	/** Codec ID */
	uint8_t  id;
	/** Codec Company ID */
	uint16_t cid;
	/** Codec Company Vendor ID */
	uint16_t vid;
#if CONFIG_BT_AUDIO_CODEC_CFG_MAX_DATA_SIZE > 0
	/** Codec Specific Capabilities Data count */
	size_t data_len;
	/** Codec Specific Capabilities Data */
	uint8_t data[CONFIG_BT_AUDIO_CODEC_CFG_MAX_DATA_SIZE];
#endif /* CONFIG_BT_AUDIO_CODEC_CFG_MAX_DATA_SIZE > 0 */
#if CONFIG_BT_AUDIO_CODEC_CFG_MAX_METADATA_SIZE > 0
	/** Codec Specific Capabilities Metadata count */
	size_t meta_len;
	/** Codec Specific Capabilities Metadata */
	uint8_t meta[CONFIG_BT_AUDIO_CODEC_CFG_MAX_METADATA_SIZE];
#endif /* CONFIG_BT_AUDIO_CODEC_CFG_MAX_METADATA_SIZE > 0 */
};

/**
 * @brief Helper for parsing length-type-value data.
 *
 * @param ltv       Length-type-value (LTV) encoded data.
 * @param size      Size of the @p ltv data.
 * @param func      Callback function which will be called for each element
 *                  that's found in the data. The callback should return
 *                  true to continue parsing, or false to stop parsing.
 * @param user_data User data to be passed to the callback.
 *
 * @retval 0 if all entries were parsed.
 * @retval -EINVAL if the data is incorrectly encoded
 * @retval -ECANCELED if parsing was prematurely cancelled by the callback
 */
int bt_audio_data_parse(const uint8_t ltv[], size_t size,
			bool (*func)(struct bt_data *data, void *user_data), void *user_data);

/** @brief Audio Capability type */
enum bt_audio_dir {
	BT_AUDIO_DIR_SINK = 0x01,
	BT_AUDIO_DIR_SOURCE = 0x02,
};

/**
 *  @brief Helper to declare elements of bt_audio_codec_qos
 *
 *  @param _interval SDU interval (usec)
 *  @param _framing Framing
 *  @param _phy Target PHY
 *  @param _sdu Maximum SDU Size
 *  @param _rtn Retransmission number
 *  @param _latency Maximum Transport Latency (msec)
 *  @param _pd Presentation Delay (usec)
 */
#define BT_AUDIO_CODEC_QOS(_interval, _framing, _phy, _sdu, _rtn, _latency, _pd)                   \
	((struct bt_audio_codec_qos){                                                              \
		.interval = _interval,                                                             \
		.framing = _framing,                                                               \
		.phy = _phy,                                                                       \
		.sdu = _sdu,                                                                       \
		.rtn = _rtn,                                                                       \
		IF_ENABLED(UTIL_OR(IS_ENABLED(CONFIG_BT_BAP_BROADCAST_SOURCE),                     \
				   IS_ENABLED(CONFIG_BT_BAP_UNICAST)),                             \
			   (.latency = _latency,))                                                 \
		.pd = _pd,                                                                         \
	})

/** @brief Codec QoS Framing */
enum bt_audio_codec_qos_framing {
	BT_AUDIO_CODEC_QOS_FRAMING_UNFRAMED = 0x00,
	BT_AUDIO_CODEC_QOS_FRAMING_FRAMED = 0x01,
};

/** @brief Codec QoS Preferred PHY */
enum {
	BT_AUDIO_CODEC_QOS_1M = BIT(0),
	BT_AUDIO_CODEC_QOS_2M = BIT(1),
	BT_AUDIO_CODEC_QOS_CODED = BIT(2),
};

/**
 *  @brief Helper to declare Input Unframed bt_audio_codec_qos
 *
 *  @param _interval SDU interval (usec)
 *  @param _sdu Maximum SDU Size
 *  @param _rtn Retransmission number
 *  @param _latency Maximum Transport Latency (msec)
 *  @param _pd Presentation Delay (usec)
 */
#define BT_AUDIO_CODEC_QOS_UNFRAMED(_interval, _sdu, _rtn, _latency, _pd)                          \
	BT_AUDIO_CODEC_QOS(_interval, BT_AUDIO_CODEC_QOS_FRAMING_UNFRAMED, BT_AUDIO_CODEC_QOS_2M,  \
			   _sdu, _rtn, _latency, _pd)

/**
 *  @brief Helper to declare Input Framed bt_audio_codec_qos
 *
 *  @param _interval SDU interval (usec)
 *  @param _sdu Maximum SDU Size
 *  @param _rtn Retransmission number
 *  @param _latency Maximum Transport Latency (msec)
 *  @param _pd Presentation Delay (usec)
 */
#define BT_AUDIO_CODEC_QOS_FRAMED(_interval, _sdu, _rtn, _latency, _pd)                            \
	BT_AUDIO_CODEC_QOS(_interval, BT_AUDIO_CODEC_QOS_FRAMING_FRAMED, BT_AUDIO_CODEC_QOS_2M,    \
			   _sdu, _rtn, _latency, _pd)

/** @brief Codec QoS structure. */
struct bt_audio_codec_qos {
	/** QoS PHY */
	uint8_t  phy;

	/** QoS Framing */
	enum bt_audio_codec_qos_framing framing;

	/** QoS Retransmission Number */
	uint8_t rtn;

	/** QoS SDU */
	uint16_t sdu;

#if defined(CONFIG_BT_BAP_BROADCAST_SOURCE) || defined(CONFIG_BT_BAP_UNICAST)
	/**
	 * @brief QoS Transport Latency
	 *
	 * Not used for the @kconfig{CONFIG_BT_BAP_BROADCAST_SINK} role.
	 */
	uint16_t latency;
#endif /*  CONFIG_BT_BAP_BROADCAST_SOURCE || CONFIG_BT_BAP_UNICAST */

	/** QoS Frame Interval */
	uint32_t interval;

	/** @brief QoS Presentation Delay in microseconds
	 *
	 *  Value range 0 to @ref BT_AUDIO_PD_MAX.
	 */
	uint32_t pd;

#if defined(CONFIG_BT_ISO_TEST_PARAMS)
	/** @brief Maximum PDU size
	 *
	 *  Maximum size, in octets, of the payload from link layer to link
	 *  layer.
	 *
	 *  Value range @ref BT_ISO_PDU_MIN to @ref BT_ISO_PDU_MAX.
	 */
	uint16_t max_pdu;

	/** @brief Burst number
	 *
	 *  Value range @ref BT_ISO_BN_MIN to @ref BT_ISO_BN_MAX.
	 */
	uint8_t burst_number;

	/** @brief Number of subevents
	 *
	 *  Maximum number of subevents in each CIS or BIS event.
	 *
	 *  Value range @ref BT_ISO_NSE_MIN to @ref BT_ISO_NSE_MAX.
	 */
	uint8_t num_subevents;
#endif /* CONFIG_BT_ISO_TEST_PARAMS */
};

/**
 *  @brief Helper to declare elements of @ref bt_audio_codec_qos_pref
 *
 *  @param _unframed_supported Unframed PDUs supported
 *  @param _phy Preferred Target PHY
 *  @param _rtn Preferred Retransmission number
 *  @param _latency Preferred Maximum Transport Latency (msec)
 *  @param _pd_min Minimum Presentation Delay (usec)
 *  @param _pd_max Maximum Presentation Delay (usec)
 *  @param _pref_pd_min Preferred Minimum Presentation Delay (usec)
 *  @param _pref_pd_max Preferred Maximum Presentation Delay (usec)
 */
#define BT_AUDIO_CODEC_QOS_PREF(_unframed_supported, _phy, _rtn, _latency, _pd_min, _pd_max,       \
				_pref_pd_min, _pref_pd_max)                                        \
	{                                                                                          \
		.unframed_supported = _unframed_supported,                                         \
		.phy = _phy,                                                                       \
		.rtn = _rtn,                                                                       \
		.latency = _latency,                                                               \
		.pd_min = _pd_min,                                                                 \
		.pd_max = _pd_max,                                                                 \
		.pref_pd_min = _pref_pd_min,                                                       \
		.pref_pd_max = _pref_pd_max,                                                       \
	}

/** @brief Audio Stream Quality of Service Preference structure. */
struct bt_audio_codec_qos_pref {
	/** @brief Unframed PDUs supported
	 *
	 *  Unlike the other fields, this is not a preference but whether
	 *  the codec supports unframed ISOAL PDUs.
	 */
	bool unframed_supported;

	/** Preferred PHY */
	uint8_t phy;

	/** Preferred Retransmission Number */
	uint8_t rtn;

	/** Preferred Transport Latency */
	uint16_t latency;

	/** @brief Minimum Presentation Delay in microseconds
	 *
	 *  Unlike the other fields, this is not a preference but a minimum
	 *  requirement.
	 *
	 *  Value range 0 to @ref BT_AUDIO_PD_MAX, or @ref BT_AUDIO_PD_PREF_NONE
	 *  to indicate no preference.
	 */
	uint32_t pd_min;

	/** @brief Maximum Presentation Delay
	 *
	 *  Unlike the other fields, this is not a preference but a maximum
	 *  requirement.
	 *
	 *  Value range 0 to @ref BT_AUDIO_PD_MAX, or @ref BT_AUDIO_PD_PREF_NONE
	 *  to indicate no preference.
	 */
	uint32_t pd_max;

	/** @brief Preferred minimum Presentation Delay
	 *
	 *  Value range 0 to @ref BT_AUDIO_PD_MAX.
	 */
	uint32_t pref_pd_min;

	/** @brief Preferred maximum Presentation Delay
	 *
	 *  Value range 0 to @ref BT_AUDIO_PD_MAX.
	 */
	uint32_t pref_pd_max;
};

/**
 * @brief Audio codec Config APIs
 * @defgroup bt_audio_codec_cfg Codec config parsing APIs
 *
 * Functions to parse codec config data when formatted as LTV wrapped into @ref bt_audio_codec_cfg.
 *
 * @{
 */

/**
 * @brief Convert assigned numbers frequency to frequency value.
 *
 * @param freq The assigned numbers frequency to convert.
 *
 * @retval -EINVAL if arguments are invalid.
 * @retval The converted frequency value in Hz.
 */
int bt_audio_codec_cfg_freq_to_freq_hz(enum bt_audio_codec_cfg_freq freq);

/**
 * @brief Convert frequency value to assigned numbers frequency.
 *
 * @param freq_hz The frequency value to convert.
 *
 * @retval -EINVAL if arguments are invalid.
 * @retval The assigned numbers frequency (@ref bt_audio_codec_cfg_freq).
 */
int bt_audio_codec_cfg_freq_hz_to_freq(uint32_t freq_hz);

/**@brief Extract the frequency from a codec configuration.
 *
 * @param codec_cfg The codec configuration to extract data from.
 *
 *  @retval A @ref bt_audio_codec_cfg_freq value
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 *  @retval -EBADMSG if found value has invalid size or value
 */
int bt_audio_codec_cfg_get_freq(const struct bt_audio_codec_cfg *codec_cfg);

/**
 * @brief Set the frequency of a codec configuration.
 *
 * @param codec_cfg The codec configuration to set data for.
 * @param freq      The assigned numbers frequency to set.
 *
 * @retval The data_len of @p codec_cfg on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cfg_set_freq(struct bt_audio_codec_cfg *codec_cfg,
				enum bt_audio_codec_cfg_freq freq);

/**
 * @brief Convert assigned numbers frame duration to duration in microseconds.
 *
 * @param frame_dur The assigned numbers frame duration to convert.
 *
 * @retval -EINVAL if arguments are invalid.
 * @retval The converted frame duration value in microseconds.
 */
int bt_audio_codec_cfg_frame_dur_to_frame_dur_us(enum bt_audio_codec_cfg_frame_dur frame_dur);

/**
 * @brief Convert frame duration in microseconds to assigned numbers frame duration.
 *
 * @param frame_dur_us The frame duration in microseconds to convert.
 *
 * @retval -EINVAL if arguments are invalid.
 * @retval The assigned numbers frame duration (@ref bt_audio_codec_cfg_frame_dur).
 */
int bt_audio_codec_cfg_frame_dur_us_to_frame_dur(uint32_t frame_dur_us);

/** @brief Extract frame duration from BT codec config
 *
 *  @param codec_cfg The codec configuration to extract data from.
 *
 *  @retval A @ref bt_audio_codec_cfg_frame_dur value
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 *  @retval -EBADMSG if found value has invalid size or value
 */
int bt_audio_codec_cfg_get_frame_dur(const struct bt_audio_codec_cfg *codec_cfg);

/**
 * @brief Set the frame duration of a codec configuration.
 *
 * @param codec_cfg  The codec configuration to set data for.
 * @param frame_dur  The assigned numbers frame duration to set.
 *
 * @retval The data_len of @p codec_cfg on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cfg_set_frame_dur(struct bt_audio_codec_cfg *codec_cfg,
				     enum bt_audio_codec_cfg_frame_dur frame_dur);

/** @brief Extract channel allocation from BT codec config
 *
 *  The value returned is a bit field representing one or more audio locations as
 *  specified by @ref bt_audio_location
 *  Shall match one or more of the bits set in BT_PAC_SNK_LOC/BT_PAC_SRC_LOC.
 *
 *  Up to the configured @ref BT_AUDIO_CODEC_CAP_TYPE_CHAN_COUNT number of channels can be present.
 *
 *  @param codec_cfg The codec configuration to extract data from.
 *  @param chan_allocation Pointer to the variable to store the extracted value in.
 *
 *  @retval 0 if value is found and stored in the pointer provided
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 *  @retval -EBADMSG if found value has invalid size or value
 */
int bt_audio_codec_cfg_get_chan_allocation(const struct bt_audio_codec_cfg *codec_cfg,
					   enum bt_audio_location *chan_allocation);

/**
 * @brief Set the channel allocation of a codec configuration.
 *
 * @param codec_cfg       The codec configuration to set data for.
 * @param chan_allocation The channel allocation to set.
 *
 * @retval The data_len of @p codec_cfg on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cfg_set_chan_allocation(struct bt_audio_codec_cfg *codec_cfg,
					   enum bt_audio_location chan_allocation);

/** @brief Extract frame size in octets from BT codec config
 *
 * The overall SDU size will be octets_per_frame * blocks_per_sdu.
 *
 *  The Bluetooth specificationa are not clear about this value - it does not state that
 *  the codec shall use this SDU size only. A codec like LC3 supports variable bit-rate
 *  (per SDU) hence it might be allowed for an encoder to reduce the frame size below this
 *  value.
 *  Hence it is recommended to use the received SDU size and divide by
 *  blocks_per_sdu rather than relying on this octets_per_sdu value to be fixed.
 *
 *  @param codec_cfg The codec configuration to extract data from.
 *
 *  @retval Frame length in octets
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 *  @retval -EBADMSG if found value has invalid size or value
 */
int bt_audio_codec_cfg_get_octets_per_frame(const struct bt_audio_codec_cfg *codec_cfg);

/**
 * @brief Set the octets per codec frame of a codec configuration.
 *
 * @param codec_cfg        The codec configuration to set data for.
 * @param octets_per_frame The octets per codec frame to set.
 *
 * @retval The data_len of @p codec_cfg on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cfg_set_octets_per_frame(struct bt_audio_codec_cfg *codec_cfg,
					    uint16_t octets_per_frame);

/** @brief Extract number of audio frame blockss in each SDU from BT codec config
 *
 *  The overall SDU size will be octets_per_frame * frame_blocks_per_sdu * number-of-channels.
 *
 *  If this value is not present a default value of 1 shall be used.
 *
 *  A frame block is one or more frames that represents data for the same period of time but
 *  for different channels. If the stream have two audio channels and this value is two
 *  there will be four frames in the SDU.
 *
 *  @param codec_cfg The codec configuration to extract data from.
 *  @param fallback_to_default If true this function will return the default value of 1
 *         if the type is not found. In this case the function will only fail if a NULL
 *         pointer is provided.
 *
 *  @retval The count of codec frames in each SDU if value is found else of @p fallback_to_default
 *          is true then the value 1 is returned if frames per sdu is not found.
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 *  @retval -EBADMSG if found value has invalid size or value
 */
int bt_audio_codec_cfg_get_frame_blocks_per_sdu(const struct bt_audio_codec_cfg *codec_cfg,
						bool fallback_to_default);

/**
 * @brief Set the frame blocks per SDU of a codec configuration.
 *
 * @param codec_cfg    The codec configuration to set data for.
 * @param frame_blocks The frame blocks per SDU to set.
 *
 * @retval The data_len of @p codec_cfg on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cfg_set_frame_blocks_per_sdu(struct bt_audio_codec_cfg *codec_cfg,
						uint8_t frame_blocks);

/** @brief Lookup a specific codec configuration value
 *
 *  @param[in] codec_cfg The codec data to search in.
 *  @param[in] type The type id to look for
 *  @param[out] data Pointer to the data-pointer to update when item is found
 *
 *  @retval Length of found @p data (may be 0)
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 */
int bt_audio_codec_cfg_get_val(const struct bt_audio_codec_cfg *codec_cfg,
			       enum bt_audio_codec_cfg_type type, const uint8_t **data);

/**
 * @brief Set or add a specific codec configuration value
 *
 * @param codec_cfg  The codec data to set the value in.
 * @param type       The type id to set
 * @param data       Pointer to the data-pointer to set
 * @param data_len   Length of @p data
 *
 * @retval The data_len of @p codec_cfg on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cfg_set_val(struct bt_audio_codec_cfg *codec_cfg,
			       enum bt_audio_codec_cfg_type type, const uint8_t *data,
			       size_t data_len);

/**
 * @brief Unset a specific codec configuration value
 *
 * The type and the value will be removed from the codec configuration.
 *
 * @param codec_cfg  The codec data to set the value in.
 * @param type       The type id to unset.
 *
 * @retval The data_len of @p codec_cfg on success
 * @retval -EINVAL if arguments are invalid
 */
int bt_audio_codec_cfg_unset_val(struct bt_audio_codec_cfg *codec_cfg,
				 enum bt_audio_codec_cfg_type type);

/** @brief Lookup a specific metadata value based on type
 *
 *
 *  @param[in]  codec_cfg The codec data to search in.
 *  @param[in]  type      The type id to look for
 *  @param[out] data      Pointer to the data-pointer to update when item is found
 *
 *  @retval Length of found @p data (may be 0)
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 */
int bt_audio_codec_cfg_meta_get_val(const struct bt_audio_codec_cfg *codec_cfg, uint8_t type,
				    const uint8_t **data);

/**
 * @brief Set or add a specific codec configuration metadata value.
 *
 * @param codec_cfg  The codec configuration to set the value in.
 * @param type       The type id to set.
 * @param data       Pointer to the data-pointer to set.
 * @param data_len   Length of @p data.
 *
 * @retval The meta_len of @p codec_cfg on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cfg_meta_set_val(struct bt_audio_codec_cfg *codec_cfg,
				    enum bt_audio_metadata_type type, const uint8_t *data,
				    size_t data_len);

/**
 * @brief Unset a specific codec configuration metadata value
 *
 * The type and the value will be removed from the codec configuration metadata.
 *
 * @param codec_cfg  The codec data to set the value in.
 * @param type       The type id to unset.
 *
 * @retval The meta_len of @p codec_cfg on success
 * @retval -EINVAL if arguments are invalid
 */
int bt_audio_codec_cfg_meta_unset_val(struct bt_audio_codec_cfg *codec_cfg,
				      enum bt_audio_metadata_type type);
/** @brief Extract preferred contexts
 *
 *  See @ref BT_AUDIO_METADATA_TYPE_PREF_CONTEXT for more information about this value.
 *
 *  @param codec_cfg The codec data to search in.
 *
 *  @retval The preferred context type if positive or 0
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 *  @retval -EBADMSG if found value has invalid size
 */
int bt_audio_codec_cfg_meta_get_pref_context(const struct bt_audio_codec_cfg *codec_cfg);

/**
 * @brief Set the preferred context of a codec configuration metadata.
 *
 * @param codec_cfg The codec configuration to set data for.
 * @param ctx       The preferred context to set.
 *
 * @retval The data_len of @p codec_cfg on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cfg_meta_set_pref_context(struct bt_audio_codec_cfg *codec_cfg,
					     enum bt_audio_context ctx);

/** @brief Extract stream contexts
 *
 *  See @ref BT_AUDIO_METADATA_TYPE_STREAM_CONTEXT for more information about this value.
 *
 *  @param codec_cfg The codec data to search in.
 *
 *  @retval The stream context type if positive or 0
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 *  @retval -EBADMSG if found value has invalid size
 */
int bt_audio_codec_cfg_meta_get_stream_context(const struct bt_audio_codec_cfg *codec_cfg);

/**
 * @brief Set the stream context of a codec configuration metadata.
 *
 * @param codec_cfg The codec configuration to set data for.
 * @param ctx       The stream context to set.
 *
 * @retval The data_len of @p codec_cfg on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cfg_meta_set_stream_context(struct bt_audio_codec_cfg *codec_cfg,
					       enum bt_audio_context ctx);

/** @brief Extract program info
 *
 *  See @ref BT_AUDIO_METADATA_TYPE_PROGRAM_INFO for more information about this value.
 *
 *  @param[in]  codec_cfg    The codec data to search in.
 *  @param[out] program_info Pointer to the UTF-8 formatted program info.
 *
 *  @retval The length of the @p program_info (may be 0)
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 */
int bt_audio_codec_cfg_meta_get_program_info(const struct bt_audio_codec_cfg *codec_cfg,
					     const uint8_t **program_info);

/**
 * @brief Set the program info of a codec configuration metadata.
 *
 * @param codec_cfg        The codec configuration to set data for.
 * @param program_info     The program info to set.
 * @param program_info_len The length of @p program_info.
 *
 * @retval The data_len of @p codec_cfg on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cfg_meta_set_program_info(struct bt_audio_codec_cfg *codec_cfg,
					     const uint8_t *program_info, size_t program_info_len);

/** @brief Extract stream language
 *
 *  See @ref BT_AUDIO_METADATA_TYPE_STREAM_LANG for more information about this value.
 *
 *  @param codec_cfg The codec data to search in.
 *
 *  @retval The stream language if positive or 0
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 *  @retval -EBADMSG if found value has invalid size
 */
int bt_audio_codec_cfg_meta_get_stream_lang(const struct bt_audio_codec_cfg *codec_cfg);

/**
 * @brief Set the stream language of a codec configuration metadata.
 *
 * @param codec_cfg   The codec configuration to set data for.
 * @param stream_lang The 24-bit stream language to set.
 *
 * @retval The data_len of @p codec_cfg on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cfg_meta_set_stream_lang(struct bt_audio_codec_cfg *codec_cfg,
					    uint32_t stream_lang);

/** @brief Extract CCID list
 *
 *  See @ref BT_AUDIO_METADATA_TYPE_CCID_LIST for more information about this value.
 *
 *  @param[in]  codec_cfg The codec data to search in.
 *  @param[out] ccid_list Pointer to the array containing 8-bit CCIDs.
 *
 *  @retval The length of the @p ccid_list (may be 0)
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 */
int bt_audio_codec_cfg_meta_get_ccid_list(const struct bt_audio_codec_cfg *codec_cfg,
					  const uint8_t **ccid_list);

/**
 * @brief Set the CCID list of a codec configuration metadata.
 *
 * @param codec_cfg     The codec configuration to set data for.
 * @param ccid_list     The program info to set.
 * @param ccid_list_len The length of @p ccid_list.
 *
 * @retval The data_len of @p codec_cfg on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cfg_meta_set_ccid_list(struct bt_audio_codec_cfg *codec_cfg,
					  const uint8_t *ccid_list, size_t ccid_list_len);

/** @brief Extract parental rating
 *
 *  See @ref BT_AUDIO_METADATA_TYPE_PARENTAL_RATING for more information about this value.
 *
 *  @param codec_cfg The codec data to search in.
 *
 *  @retval The parental rating if positive or 0
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 *  @retval -EBADMSG if found value has invalid size
 */
int bt_audio_codec_cfg_meta_get_parental_rating(const struct bt_audio_codec_cfg *codec_cfg);

/**
 * @brief Set the parental rating of a codec configuration metadata.
 *
 * @param codec_cfg       The codec configuration to set data for.
 * @param parental_rating The parental rating to set.
 *
 * @retval The data_len of @p codec_cfg on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cfg_meta_set_parental_rating(struct bt_audio_codec_cfg *codec_cfg,
						enum bt_audio_parental_rating parental_rating);

/** @brief Extract program info URI
 *
 *  See @ref BT_AUDIO_METADATA_TYPE_PROGRAM_INFO_URI for more information about this value.
 *
 *  @param[in]  codec_cfg The codec data to search in.
 *  @param[out] program_info_uri Pointer to the UTF-8 formatted program info URI.
 *
 *  @retval The length of the @p ccid_list (may be 0)
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 */
int bt_audio_codec_cfg_meta_get_program_info_uri(const struct bt_audio_codec_cfg *codec_cfg,
						 const uint8_t **program_info_uri);

/**
 * @brief Set the program info URI of a codec configuration metadata.
 *
 * @param codec_cfg            The codec configuration to set data for.
 * @param program_info_uri     The program info URI to set.
 * @param program_info_uri_len The length of @p program_info_uri.
 *
 * @retval The data_len of @p codec_cfg on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cfg_meta_set_program_info_uri(struct bt_audio_codec_cfg *codec_cfg,
						 const uint8_t *program_info_uri,
						 size_t program_info_uri_len);

/** @brief Extract audio active state
 *
 *  See @ref BT_AUDIO_METADATA_TYPE_AUDIO_STATE for more information about this value.
 *
 *  @param codec_cfg The codec data to search in.
 *
 *  @retval The preferred context type if positive or 0
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 *  @retval -EBADMSG if found value has invalid size
 */
int bt_audio_codec_cfg_meta_get_audio_active_state(const struct bt_audio_codec_cfg *codec_cfg);

/**
 * @brief Set the audio active state of a codec configuration metadata.
 *
 * @param codec_cfg The codec configuration to set data for.
 * @param state     The audio active state to set.
 *
 * @retval The data_len of @p codec_cfg on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cfg_meta_set_audio_active_state(struct bt_audio_codec_cfg *codec_cfg,
						   enum bt_audio_active_state state);

/** @brief Extract broadcast audio immediate rendering flag
 *
 *  See @ref BT_AUDIO_METADATA_TYPE_BROADCAST_IMMEDIATE for more information about this value.
 *
 *  @param codec_cfg The codec data to search in.
 *
 *  @retval 0 if the flag was found
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not the flag was not found
 */
int bt_audio_codec_cfg_meta_get_bcast_audio_immediate_rend_flag(
	const struct bt_audio_codec_cfg *codec_cfg);

/**
 * @brief Set the broadcast audio immediate rendering flag of a codec configuration metadata.
 *
 * @param codec_cfg The codec configuration to set data for.
 *
 * @retval The data_len of @p codec_cfg on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cfg_meta_set_bcast_audio_immediate_rend_flag(
	struct bt_audio_codec_cfg *codec_cfg);

/** @brief Extract extended metadata
 *
 *  See @ref BT_AUDIO_METADATA_TYPE_EXTENDED for more information about this value.
 *
 *  @param[in]  codec_cfg     The codec data to search in.
 *  @param[out] extended_meta Pointer to the extended metadata.
 *
 *  @retval The length of the @p ccid_list (may be 0)
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 */
int bt_audio_codec_cfg_meta_get_extended(const struct bt_audio_codec_cfg *codec_cfg,
					 const uint8_t **extended_meta);

/**
 * @brief Set the extended metadata of a codec configuration metadata.
 *
 * @param codec_cfg         The codec configuration to set data for.
 * @param extended_meta     The extended metadata to set.
 * @param extended_meta_len The length of @p extended_meta.
 *
 * @retval The data_len of @p codec_cfg on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cfg_meta_set_extended(struct bt_audio_codec_cfg *codec_cfg,
					 const uint8_t *extended_meta, size_t extended_meta_len);

/** @brief Extract vendor specific metadata
 *
 *  See @ref BT_AUDIO_METADATA_TYPE_VENDOR for more information about this value.
 *
 *  @param[in]  codec_cfg   The codec data to search in.
 *  @param[out] vendor_meta Pointer to the vendor specific metadata.
 *
 *  @retval The length of the @p ccid_list (may be 0)
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 */
int bt_audio_codec_cfg_meta_get_vendor(const struct bt_audio_codec_cfg *codec_cfg,
				       const uint8_t **vendor_meta);

/**
 * @brief Set the vendor specific metadata of a codec configuration metadata.
 *
 * @param codec_cfg       The codec configuration to set data for.
 * @param vendor_meta     The vendor specific metadata to set.
 * @param vendor_meta_len The length of @p vendor_meta.
 *
 * @retval The data_len of @p codec_cfg on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cfg_meta_set_vendor(struct bt_audio_codec_cfg *codec_cfg,
				       const uint8_t *vendor_meta, size_t vendor_meta_len);
/** @} */ /* End of bt_audio_codec_cfg */

/**
 * @brief Audio codec capabilities APIs
 * @defgroup bt_audio_codec_cap Codec capability parsing APIs
 *
 * Functions to parse codec capability data when formatted as LTV wrapped into @ref
 * bt_audio_codec_cap.
 *
 * @{
 */

/**
 * @brief Lookup a specific value based on type
 *
 * @param[in]  codec_cap The codec data to search in.
 * @param[in]  type The type id to look for
 * @param[out] data Pointer to the data-pointer to update when item is found
 *
 *  @retval Length of found @p data (may be 0)
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 */
int bt_audio_codec_cap_get_val(const struct bt_audio_codec_cap *codec_cap,
			       enum bt_audio_codec_cap_type type, const uint8_t **data);

/**
 * @brief Set or add a specific codec capability value
 *
 * @param codec_cap  The codec data to set the value in.
 * @param type       The type id to set
 * @param data       Pointer to the data-pointer to set
 * @param data_len   Length of @p data
 *
 * @retval The data_len of @p codec_cap on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cap_set_val(struct bt_audio_codec_cap *codec_cap,
			       enum bt_audio_codec_cap_type type, const uint8_t *data,
			       size_t data_len);

/**
 * @brief Unset a specific codec capability value
 *
 * The type and the value will be removed from the codec capability.
 *
 * @param codec_cap  The codec data to set the value in.
 * @param type       The type id to unset.
 *
 * @retval The data_len of @p codec_cap on success
 * @retval -EINVAL if arguments are invalid
 */
int bt_audio_codec_cap_unset_val(struct bt_audio_codec_cap *codec_cap,
				 enum bt_audio_codec_cap_type type);

/**
 * @brief Extract the frequency from a codec capability.
 *
 * @param codec_cap The codec capabilities to extract data from.
 *
 * @retval Bitfield of supported frequencies (@ref bt_audio_codec_cap_freq) if 0 or positive
 * @retval -EINVAL if arguments are invalid
 * @retval -ENODATA if not found
 * @retval -EBADMSG if found value has invalid size or value
 */
int bt_audio_codec_cap_get_freq(const struct bt_audio_codec_cap *codec_cap);

/**
 * @brief Set the supported frequencies of a codec capability.
 *
 * @param codec_cap The codec capabilities to set data for.
 * @param freq      The supported frequencies to set.
 *
 * @retval The data_len of @p codec_cap on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cap_set_freq(struct bt_audio_codec_cap *codec_cap,
				enum bt_audio_codec_cap_freq freq);

/**
 * @brief Extract the frequency from a codec capability.
 *
 * @param codec_cap The codec capabilities to extract data from.
 *
 * @retval Bitfield of supported frame durations if 0 or positive
 * @retval -EINVAL if arguments are invalid
 * @retval -ENODATA if not found
 * @retval -EBADMSG if found value has invalid size or value
 */
int bt_audio_codec_cap_get_frame_dur(const struct bt_audio_codec_cap *codec_cap);

/**
 * @brief Set the frame duration of a codec capability.
 *
 * @param codec_cap The codec capabilities to set data for.
 * @param frame_dur The frame duration to set.
 *
 * @retval The data_len of @p codec_cap on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cap_set_frame_dur(struct bt_audio_codec_cap *codec_cap,
				     enum bt_audio_codec_cap_frame_dur frame_dur);

/**
 * @brief Extract the frequency from a codec capability.
 *
 * @param codec_cap The codec capabilities to extract data from.
 *
 * @retval Bitfield of supported channel counts if 0 or positive
 * @retval -EINVAL if arguments are invalid
 * @retval -ENODATA if not found
 * @retval -EBADMSG if found value has invalid size or value
 */
int bt_audio_codec_cap_get_supported_audio_chan_counts(const struct bt_audio_codec_cap *codec_cap);

/**
 * @brief Set the channel count of a codec capability.
 *
 * @param codec_cap The codec capabilities to set data for.
 * @param chan_count The channel count frequency to set.
 *
 * @retval The data_len of @p codec_cap on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cap_set_supported_audio_chan_counts(
	struct bt_audio_codec_cap *codec_cap, enum bt_audio_codec_cap_chan_count chan_count);

/**
 * @brief Extract the supported octets per codec frame from a codec capability.
 *
 * @param[in]  codec_cap   The codec capabilities to extract data from.
 * @param[out] codec_frame Struct to place the resulting values in
 *
 * @retval 0 on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENODATA if not found
 * @retval -EBADMSG if found value has invalid size or value
 */
int bt_audio_codec_cap_get_octets_per_frame(
	const struct bt_audio_codec_cap *codec_cap,
	struct bt_audio_codec_octets_per_codec_frame *codec_frame);

/**
 * @brief Set the octets per codec frame of a codec capability.
 *
 * @param codec_cap   The codec capabilities to set data for.
 * @param codec_frame The octets per codec frame to set.
 *
 * @retval The data_len of @p codec_cap on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cap_set_octets_per_frame(
	struct bt_audio_codec_cap *codec_cap,
	const struct bt_audio_codec_octets_per_codec_frame *codec_frame);

/**
 * @brief Extract the maximum codec frames per SDU from a codec capability.
 *
 * @param codec_cap The codec capabilities to extract data from.
 *
 * @retval Maximum number of codec frames per SDU supported
 * @retval -EINVAL if arguments are invalid
 * @retval -ENODATA if not found
 * @retval -EBADMSG if found value has invalid size or value
 */
int bt_audio_codec_cap_get_max_codec_frames_per_sdu(const struct bt_audio_codec_cap *codec_cap);

/**
 * @brief Set the maximum codec frames per SDU of a codec capability.
 *
 * @param codec_cap            The codec capabilities to set data for.
 * @param codec_frames_per_sdu The maximum codec frames per SDU to set.
 *
 * @retval The data_len of @p codec_cap on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cap_set_max_codec_frames_per_sdu(struct bt_audio_codec_cap *codec_cap,
						    uint8_t codec_frames_per_sdu);

/** @brief Lookup a specific metadata value based on type
 *
 *  @param[in]  codec_cap The codec data to search in.
 *  @param[in]  type      The type id to look for
 *  @param[out] data      Pointer to the data-pointer to update when item is found
 *
 *  @retval Length of found @p data (may be 0)
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 */
int bt_audio_codec_cap_meta_get_val(const struct bt_audio_codec_cap *codec_cap, uint8_t type,
				    const uint8_t **data);

/**
 * @brief Set or add a specific codec capability metadata value.
 *
 * @param codec_cap  The codec capability to set the value in.
 * @param type       The type id to set.
 * @param data       Pointer to the data-pointer to set.
 * @param data_len   Length of @p data.
 *
 * @retval The meta_len of @p codec_cap on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cap_meta_set_val(struct bt_audio_codec_cap *codec_cap,
				    enum bt_audio_metadata_type type, const uint8_t *data,
				    size_t data_len);

/**
 * @brief Unset a specific codec capability metadata value
 *
 * The type and the value will be removed from the codec capability metadata.
 *
 * @param codec_cap  The codec data to set the value in.
 * @param type       The type id to unset.
 *
 * @retval The meta_len of @p codec_cap on success
 * @retval -EINVAL if arguments are invalid
 */
int bt_audio_codec_cap_meta_unset_val(struct bt_audio_codec_cap *codec_cap,
				      enum bt_audio_metadata_type type);

/** @brief Extract preferred contexts
 *
 *  See @ref BT_AUDIO_METADATA_TYPE_PREF_CONTEXT for more information about this value.
 *
 *  @param codec_cap The codec data to search in.
 *
 *  @retval The preferred context type if positive or 0
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 *  @retval -EBADMSG if found value has invalid size
 */
int bt_audio_codec_cap_meta_get_pref_context(const struct bt_audio_codec_cap *codec_cap);

/**
 * @brief Set the preferred context of a codec capability metadata.
 *
 * @param codec_cap The codec capability to set data for.
 * @param ctx       The preferred context to set.
 *
 * @retval The data_len of @p codec_cap on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cap_meta_set_pref_context(struct bt_audio_codec_cap *codec_cap,
					     enum bt_audio_context ctx);

/** @brief Extract stream contexts
 *
 *  See @ref BT_AUDIO_METADATA_TYPE_STREAM_CONTEXT for more information about this value.
 *
 *  @param codec_cap The codec data to search in.
 *
 *  @retval The stream context type if positive or 0
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 *  @retval -EBADMSG if found value has invalid size
 */
int bt_audio_codec_cap_meta_get_stream_context(const struct bt_audio_codec_cap *codec_cap);

/**
 * @brief Set the stream context of a codec capability metadata.
 *
 * @param codec_cap The codec capability to set data for.
 * @param ctx       The stream context to set.
 *
 * @retval The data_len of @p codec_cap on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cap_meta_set_stream_context(struct bt_audio_codec_cap *codec_cap,
					       enum bt_audio_context ctx);

/** @brief Extract program info
 *
 *  See @ref BT_AUDIO_METADATA_TYPE_PROGRAM_INFO for more information about this value.
 *
 *  @param[in]  codec_cap    The codec data to search in.
 *  @param[out] program_info Pointer to the UTF-8 formatted program info.
 *
 *  @retval The length of the @p program_info (may be 0)
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 */
int bt_audio_codec_cap_meta_get_program_info(const struct bt_audio_codec_cap *codec_cap,
					     const uint8_t **program_info);

/**
 * @brief Set the program info of a codec capability metadata.
 *
 * @param codec_cap        The codec capability to set data for.
 * @param program_info     The program info to set.
 * @param program_info_len The length of @p program_info.
 *
 * @retval The data_len of @p codec_cap on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cap_meta_set_program_info(struct bt_audio_codec_cap *codec_cap,
					     const uint8_t *program_info, size_t program_info_len);

/** @brief Extract stream language
 *
 *  See @ref BT_AUDIO_METADATA_TYPE_STREAM_LANG for more information about this value.
 *
 *  @param codec_cap The codec data to search in.
 *
 *  @retval The stream language if positive or 0
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 *  @retval -EBADMSG if found value has invalid size
 */
int bt_audio_codec_cap_meta_get_stream_lang(const struct bt_audio_codec_cap *codec_cap);

/**
 * @brief Set the stream language of a codec capability metadata.
 *
 * @param codec_cap   The codec capability to set data for.
 * @param stream_lang The 24-bit stream language to set.
 *
 * @retval The data_len of @p codec_cap on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cap_meta_set_stream_lang(struct bt_audio_codec_cap *codec_cap,
					    uint32_t stream_lang);

/** @brief Extract CCID list
 *
 *  See @ref BT_AUDIO_METADATA_TYPE_CCID_LIST for more information about this value.
 *
 *  @param[in]  codec_cap The codec data to search in.
 *  @param[out] ccid_list Pointer to the array containing 8-bit CCIDs.
 *
 *  @retval The length of the @p ccid_list (may be 0)
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 */
int bt_audio_codec_cap_meta_get_ccid_list(const struct bt_audio_codec_cap *codec_cap,
					  const uint8_t **ccid_list);

/**
 * @brief Set the CCID list of a codec capability metadata.
 *
 * @param codec_cap     The codec capability to set data for.
 * @param ccid_list     The program info to set.
 * @param ccid_list_len The length of @p ccid_list.
 *
 * @retval The data_len of @p codec_cap on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cap_meta_set_ccid_list(struct bt_audio_codec_cap *codec_cap,
					  const uint8_t *ccid_list, size_t ccid_list_len);

/** @brief Extract parental rating
 *
 *  See @ref BT_AUDIO_METADATA_TYPE_PARENTAL_RATING for more information about this value.
 *
 *  @param codec_cap The codec data to search in.
 *
 *  @retval The parental rating if positive or 0
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 *  @retval -EBADMSG if found value has invalid size
 */
int bt_audio_codec_cap_meta_get_parental_rating(const struct bt_audio_codec_cap *codec_cap);

/**
 * @brief Set the parental rating of a codec capability metadata.
 *
 * @param codec_cap       The codec capability to set data for.
 * @param parental_rating The parental rating to set.
 *
 * @retval The data_len of @p codec_cap on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cap_meta_set_parental_rating(struct bt_audio_codec_cap *codec_cap,
						enum bt_audio_parental_rating parental_rating);

/** @brief Extract program info URI
 *
 *  See @ref BT_AUDIO_METADATA_TYPE_PROGRAM_INFO_URI for more information about this value.
 *
 *  @param[in]  codec_cap        The codec data to search in.
 *  @param[out] program_info_uri Pointer to the UTF-8 formatted program info URI.
 *
 *  @retval The length of the @p ccid_list (may be 0)
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 */
int bt_audio_codec_cap_meta_get_program_info_uri(const struct bt_audio_codec_cap *codec_cap,
						 const uint8_t **program_info_uri);

/**
 * @brief Set the program info URI of a codec capability metadata.
 *
 * @param codec_cap            The codec capability to set data for.
 * @param program_info_uri     The program info URI to set.
 * @param program_info_uri_len The length of @p program_info_uri.
 *
 * @retval The data_len of @p codec_cap on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cap_meta_set_program_info_uri(struct bt_audio_codec_cap *codec_cap,
						 const uint8_t *program_info_uri,
						 size_t program_info_uri_len);

/** @brief Extract audio active state
 *
 *  See @ref BT_AUDIO_METADATA_TYPE_AUDIO_STATE for more information about this value.
 *
 *  @param codec_cap The codec data to search in.
 *
 *  @retval The preferred context type if positive or 0
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 *  @retval -EBADMSG if found value has invalid size
 */
int bt_audio_codec_cap_meta_get_audio_active_state(const struct bt_audio_codec_cap *codec_cap);

/**
 * @brief Set the audio active state of a codec capability metadata.
 *
 * @param codec_cap The codec capability to set data for.
 * @param state     The audio active state to set.
 *
 * @retval The data_len of @p codec_cap on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cap_meta_set_audio_active_state(struct bt_audio_codec_cap *codec_cap,
						   enum bt_audio_active_state state);

/** @brief Extract broadcast audio immediate rendering flag
 *
 *  See @ref BT_AUDIO_METADATA_TYPE_BROADCAST_IMMEDIATE for more information about this value.
 *
 *  @param codec_cap The codec data to search in.
 *
 *  @retval 0 if the flag was found
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not the flag was not found
 */
int bt_audio_codec_cap_meta_get_bcast_audio_immediate_rend_flag(
	const struct bt_audio_codec_cap *codec_cap);

/**
 * @brief Set the broadcast audio immediate rendering flag of a codec capability metadata.
 *
 * @param codec_cap The codec capability to set data for.
 *
 * @retval The data_len of @p codec_cap on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cap_meta_set_bcast_audio_immediate_rend_flag(
	struct bt_audio_codec_cap *codec_cap);

/** @brief Extract extended metadata
 *
 *  See @ref BT_AUDIO_METADATA_TYPE_EXTENDED for more information about this value.
 *
 *  @param[in]  codec_cap     The codec data to search in.
 *  @param[out] extended_meta Pointer to the extended metadata.
 *
 *  @retval The length of the @p ccid_list (may be 0)
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 */
int bt_audio_codec_cap_meta_get_extended(const struct bt_audio_codec_cap *codec_cap,
					 const uint8_t **extended_meta);

/**
 * @brief Set the extended metadata of a codec capability metadata.
 *
 * @param codec_cap         The codec capability to set data for.
 * @param extended_meta     The extended metadata to set.
 * @param extended_meta_len The length of @p extended_meta.
 *
 * @retval The data_len of @p codec_cap on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cap_meta_set_extended(struct bt_audio_codec_cap *codec_cap,
					 const uint8_t *extended_meta, size_t extended_meta_len);

/** @brief Extract vendor specific metadata
 *
 *  See @ref BT_AUDIO_METADATA_TYPE_VENDOR for more information about this value.
 *
 *  @param[in]  codec_cap   The codec data to search in.
 *  @param[out] vendor_meta Pointer to the vendor specific metadata.
 *
 *  @retval The length of the @p ccid_list (may be 0)
 *  @retval -EINVAL if arguments are invalid
 *  @retval -ENODATA if not found
 */
int bt_audio_codec_cap_meta_get_vendor(const struct bt_audio_codec_cap *codec_cap,
				       const uint8_t **vendor_meta);

/**
 * @brief Set the vendor specific metadata of a codec capability metadata.
 *
 * @param codec_cap       The codec capability to set data for.
 * @param vendor_meta     The vendor specific metadata to set.
 * @param vendor_meta_len The length of @p vendor_meta.
 *
 * @retval The data_len of @p codec_cap on success
 * @retval -EINVAL if arguments are invalid
 * @retval -ENOMEM if the new value could not set or added due to memory
 */
int bt_audio_codec_cap_meta_set_vendor(struct bt_audio_codec_cap *codec_cap,
				       const uint8_t *vendor_meta, size_t vendor_meta_len);

/** @} */ /* End of bt_audio_codec_cap */

#ifdef __cplusplus
}
#endif

/** @} */ /* end of bt_audio */

#endif /* ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_H_ */