b880637231
Audio streams as defined by the BAP spec does not support bidirectional audio streams. This commit updates the API and implementation to match that. The use a bidirectional CIS with 2 audio stream will be added in a future commit. This removes the _IN_ and _OUT_ and _INOUT_ QOS values, as well as the direction of the codec QOS struct. To keep direction for internal use, the direction has been added to the endpoint struct. Signed-off-by: Emil Gydesen <emil.gydesen@nordicsemi.no>
404 lines
13 KiB
C
404 lines
13 KiB
C
/** @file
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* @brief Bluetooth LC3 codec handling
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*/
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/*
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* Copyright (c) 2020 Intel Corporation
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* Copyright (c) 2022 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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#ifndef ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_LC3_H_
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#define ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_LC3_H_
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/**
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* @brief LC3
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* @defgroup bt_codec_lc3 AUDIO
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* @ingroup bluetooth
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* @{
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** @def BT_CODEC_LC3_ID
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* @brief LC3 codec ID
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*/
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#define BT_CODEC_LC3_ID 0x06
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/* TODO: Remove base once LTV types are defined */
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#define BT_CODEC_LC3_CAP_BASE 0x01
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/** @def BT_CODEC_LC3_FREQ
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* @brief LC3 sample frequency capability type
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*/
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#define BT_CODEC_LC3_FREQ (BT_CODEC_LC3_CAP_BASE)
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/** @def BT_CODEC_LC3_FREQ_8KHZ
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* @brief LC3 8 Khz frequency capability
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*/
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#define BT_CODEC_LC3_FREQ_8KHZ BIT(0)
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/** @def BT_CODEC_LC3_FREQ_11KHZ
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* @brief LC3 11.025 Khz frequency capability
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*/
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#define BT_CODEC_LC3_FREQ_11KHZ BIT(1)
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/** @def BT_CODEC_LC3_FREQ_16KHZ
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* @brief LC3 16 Khz frequency capability
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*/
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#define BT_CODEC_LC3_FREQ_16KHZ BIT(2)
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/** @def BT_CODEC_LC3_FREQ_22KHZ
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* @brief LC3 22.05 Khz frequency capability
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*/
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#define BT_CODEC_LC3_FREQ_22KHZ BIT(3)
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/** @def BT_CODEC_LC3_FREQ_24KHZ
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* @brief LC3 24 Khz frequency capability
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*/
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#define BT_CODEC_LC3_FREQ_24KHZ BIT(4)
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/** @def BT_CODEC_LC3_FREQ_32KHZ
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* @brief LC3 32 Khz frequency capability
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*/
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#define BT_CODEC_LC3_FREQ_32KHZ BIT(5)
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/** @def BT_CODEC_LC3_FREQ_44KHZ
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* @brief LC3 44.1 Khz frequency capability
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*/
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#define BT_CODEC_LC3_FREQ_44KHZ BIT(6)
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/** @def BT_CODEC_LC3_FREQ_48KHZ
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* @brief LC3 48 Khz frequency capability
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*/
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#define BT_CODEC_LC3_FREQ_48KHZ BIT(7)
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/** @def BT_CODEC_LC3_FREQ_ANY
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* @brief LC3 any frequency capability
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*/
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#define BT_CODEC_LC3_FREQ_ANY (BT_CODEC_LC3_FREQ_8KHZ | \
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BT_CODEC_LC3_FREQ_16KHZ | \
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BT_CODEC_LC3_FREQ_24KHZ | \
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BT_CODEC_LC3_FREQ_32KHZ | \
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BT_CODEC_LC3_FREQ_44KHZ | \
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BT_CODEC_LC3_FREQ_48KHZ)
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/** @def BT_CODEC_LC3_DURATION
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* @brief LC3 frame duration capability type
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*/
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#define BT_CODEC_LC3_DURATION (BT_CODEC_LC3_CAP_BASE + 1)
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/** @def BT_CODEC_LC3_DURATION_7_5
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* @brief LC3 7.5 msec frame duration capability
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*/
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#define BT_CODEC_LC3_DURATION_7_5 BIT(0)
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/** @def BT_CODEC_LC3_DURATION_10
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* @brief LC3 10 msec frame duration capability
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*/
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#define BT_CODEC_LC3_DURATION_10 BIT(1)
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/** @def BT_CODEC_LC3_DURATION_ANY
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* @brief LC3 any frame duration capability
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*/
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#define BT_CODEC_LC3_DURATION_ANY (BT_CODEC_LC3_DURATION_7_5 | \
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BT_CODEC_LC3_DURATION_10)
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/** @def BT_CODEC_LC3_DURATION_PREFER_7_5
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* @brief LC3 7.5 msec preferred frame duration capability
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*/
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#define BT_CODEC_LC3_DURATION_PREFER_7_5 BIT(4)
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/** @def BT_CODEC_LC3_DURATION_PREFER_10
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* @brief LC3 10 msec preferred frame duration capability
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*/
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#define BT_CODEC_LC3_DURATION_PREFER_10 BIT(5)
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/** @def BT_CODEC_LC3_CHAN_COUNT
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* @brief LC3 channel count capability type
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*/
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#define BT_CODEC_LC3_CHAN_COUNT (BT_CODEC_LC3_CAP_BASE + 2)
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/** @def BT_CODEC_LC3_CHAN_COUNT_SUPPORT
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* @brief LC3 channel count support capability
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*/
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#define BT_CODEC_LC3_CHAN_COUNT_SUPPORT BIT(0)
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/** @def BT_CODEC_LC3_FRAME_LEN
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* @brief LC3 frame length capability type
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*/
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#define BT_CODEC_LC3_FRAME_LEN (BT_CODEC_LC3_CAP_BASE + 3)
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/** @def BT_CODEC_LC3_FRAME_COUNT
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* @brief LC3 frame count capability type
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*/
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#define BT_CODEC_LC3_FRAME_COUNT (BT_CODEC_LC3_CAP_BASE + 4)
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/* TODO: Remove base once LTV types are defined */
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#define BT_CODEC_LC3_CONFIG_BASE 0x01
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struct bt_codec_lc3_frame_len {
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uint16_t min;
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uint16_t max;
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};
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/** @def BT_CODEC_CONFIG_LC3_FREQ
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* @brief LC3 Sample Frequency configuration type
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*/
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#define BT_CODEC_CONFIG_LC3_FREQ (BT_CODEC_LC3_CONFIG_BASE)
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/** @def BT_CODEC_CONFIG_LC3_FREQ_8KHZ
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* @brief LC3 8 Khz Sample Frequency configuration
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*/
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#define BT_CODEC_CONFIG_LC3_FREQ_8KHZ 0x01
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/** @def BT_CODEC_CONFIG_LC3_FREQ_11KHZ
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* @brief LC3 11.025 Khz Sample Frequency configuration
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*/
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#define BT_CODEC_CONFIG_LC3_FREQ_11KHZ 0x02
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/** @def BT_CODEC_CONFIG_LC3_FREQ_16KHZ
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* @brief LC3 16 Khz Sample Frequency configuration
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*/
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#define BT_CODEC_CONFIG_LC3_FREQ_16KHZ 0x03
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/** @def BT_CODEC_CONFIG_LC3_FREQ_22KHZ
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* @brief LC3 22.05 Khz Sample Frequency configuration
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*/
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#define BT_CODEC_CONFIG_LC3_FREQ_22KHZ 0x04
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/** @def BT_CODEC_CONFIG_LC3_FREQ_24KHZ
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* @brief LC3 24 Khz Sample Frequency configuration
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*/
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#define BT_CODEC_CONFIG_LC3_FREQ_24KHZ 0x05
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/** @def BT_CODEC_CONFIG_LC3_FREQ_32KHZ
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* @brief LC3 32 Khz Sample Frequency configuration
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*/
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#define BT_CODEC_CONFIG_LC3_FREQ_32KHZ 0x06
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/** @def BT_CODEC_CONFIG_LC3_FREQ_44KHZ
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* @brief LC3 44.1 Khz Sample Frequency configuration
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*/
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#define BT_CODEC_CONFIG_LC3_FREQ_44KHZ 0x07
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/** @def BT_CODEC_CONFIG_LC3_FREQ_48KHZ
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* @brief LC3 48 Khz Sample Frequency configuration
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*/
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#define BT_CODEC_CONFIG_LC3_FREQ_48KHZ 0x08
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/** @def BT_CODEC_CONFIG_LC3_DURATION
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* @brief LC3 Frame Duration configuration type
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*/
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#define BT_CODEC_CONFIG_LC3_DURATION (BT_CODEC_LC3_CONFIG_BASE + 1)
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/** @def BT_CODEC_CONFIG_LC3_DURATION_7_5
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* @brief LC3 7.5 msec Frame Duration configuration
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*/
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#define BT_CODEC_CONFIG_LC3_DURATION_7_5 0x00
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/** @def BT_CODEC_CONFIG_LC3_DURATION_10
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* @brief LC3 10 msec Frame Duration configuration
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*/
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#define BT_CODEC_CONFIG_LC3_DURATION_10 0x01
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/** @def BT_CODEC_CONFIG_LC3_CHAN_ALLOC
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* @brief LC3 channel Allocation configuration type
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*/
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#define BT_CODEC_CONFIG_LC3_CHAN_ALLOC (BT_CODEC_LC3_CONFIG_BASE + 2)
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/** @def BT_CODEC_CONFIG_LC3_FRAME_LEN
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* @brief LC3 Frame Length configuration type
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*/
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#define BT_CODEC_CONFIG_LC3_FRAME_LEN (BT_CODEC_LC3_CONFIG_BASE + 3)
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/** @def BT_CODEC_LC3_DATA
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* @brief Helper to declare LC3 codec capability
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*/
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#define BT_CODEC_LC3_DATA(_freq, _duration, _chan_count, _len_min, _len_max) \
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{ \
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BT_CODEC_DATA(BT_CODEC_LC3_FREQ, (_freq) & 0xffu, (_freq) >> 8), \
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BT_CODEC_DATA(BT_CODEC_LC3_DURATION, _duration), \
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BT_CODEC_DATA(BT_CODEC_LC3_CHAN_COUNT, _chan_count), \
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BT_CODEC_DATA(BT_CODEC_LC3_FRAME_LEN, (_len_min) & 0xffu, (_len_min) >> 8, \
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(_len_max) & 0xffu, (_len_max) >> 8) \
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}
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/** @def BT_CODEC_LC3_META
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* @brief Helper to declare LC3 codec metadata
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*/
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#define BT_CODEC_LC3_META(_prefer_context, _context) \
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{ \
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BT_CODEC_DATA(BT_CODEC_META_PREFER_CONTEXT, (_prefer_context) & 0xffu, \
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(_prefer_context) >> 8), \
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BT_CODEC_DATA(BT_CODEC_META_CONTEXT, (_context) & 0xffu, (_context) >> 8) \
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}
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/** @def BT_CODEC_LC3
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* @brief Helper to declare LC3 codec
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*/
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#define BT_CODEC_LC3(_freq, _duration, _chan_count, _len_min, _len_max, \
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_frames, _prefer_context, _context) \
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BT_CODEC(BT_CODEC_LC3_ID, 0x0000, 0x0000, \
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BT_CODEC_LC3_DATA(_freq, _duration, _chan_count, _len_min, \
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_len_max), \
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BT_CODEC_LC3_META(_prefer_context, _context))
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/** @def BT_CODEC_LC3_CONFIG_DATA
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* @brief Helper to declare LC3 codec data configuration
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*/
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#define BT_CODEC_LC3_CONFIG_DATA(_freq, _duration, _loc, _len) \
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{ \
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BT_CODEC_DATA(BT_CODEC_CONFIG_LC3_FREQ, _freq), \
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BT_CODEC_DATA(BT_CODEC_CONFIG_LC3_DURATION, _duration), \
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BT_CODEC_DATA(BT_CODEC_CONFIG_LC3_CHAN_ALLOC, (_loc) & 0xffu, ((_loc) >> 8) & 0xffu, \
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((_loc) >> 16) & 0xffu, (_loc) >> 24), \
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BT_CODEC_DATA(BT_CODEC_CONFIG_LC3_FRAME_LEN, (_len) & 0xffu, (_len) >> 8) \
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}
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/** @def BT_CODEC_LC3_CONFIG_DATA
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* @brief Helper to declare LC3 codec metadata configuration
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*/
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#define BT_CODEC_LC3_CONFIG_META(_context) \
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{ \
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BT_CODEC_DATA(BT_CODEC_META_CONTEXT, _context, _context >> 8), \
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}
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/** @def BT_CODEC_LC3_CONFIG_N
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* @brief Helper to declare LC3 codec configuration for multiple channels.
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*/
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#define BT_CODEC_LC3_CONFIG_N(_freq, _duration, _loc, _len, _context) \
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BT_CODEC(BT_CODEC_LC3_ID, 0x0000, 0x0000, \
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BT_CODEC_LC3_CONFIG_DATA(_freq, _duration, _loc, _len), \
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BT_CODEC_LC3_CONFIG_META(_context))
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/** @def BT_CODEC_LC3_CONFIG
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* @brief Helper to declare LC3 codec configuration
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*/
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#define BT_CODEC_LC3_CONFIG(_freq, _duration, _len, _context) \
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BT_CODEC_LC3_CONFIG_N(_freq, _duration, 0x000000000, _len, _context)
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/** @def BT_CODEC_LC3_CONFIG_8_1
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* @brief Helper to declare LC3 8.1 codec configuration
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*/
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#define BT_CODEC_LC3_CONFIG_8_1 \
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BT_CODEC_LC3_CONFIG(BT_CODEC_CONFIG_LC3_FREQ_8KHZ, \
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BT_CODEC_CONFIG_LC3_DURATION_7_5, 26u, \
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BT_CODEC_META_CONTEXT_VOICE)
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/** @def BT_CODEC_LC3_CONFIG_8_2
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* @brief Helper to declare LC3 8.2 codec configuration
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*/
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#define BT_CODEC_LC3_CONFIG_8_2 \
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BT_CODEC_LC3_CONFIG(BT_CODEC_CONFIG_LC3_FREQ_8KHZ, \
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BT_CODEC_CONFIG_LC3_DURATION_10, 30u, \
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BT_CODEC_META_CONTEXT_VOICE)
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/** @def BT_CODEC_LC3_CONFIG_16_1
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* @brief Helper to declare LC3 16.1 codec configuration
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*/
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#define BT_CODEC_LC3_CONFIG_16_1 \
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BT_CODEC_LC3_CONFIG(BT_CODEC_CONFIG_LC3_FREQ_16KHZ, \
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BT_CODEC_CONFIG_LC3_DURATION_7_5, 30u, \
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BT_CODEC_META_CONTEXT_VOICE)
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/** @def BT_CODEC_LC3_CONFIG_16_2
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* @brief Helper to declare LC3 16.2 codec configuration
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*/
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#define BT_CODEC_LC3_CONFIG_16_2 \
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BT_CODEC_LC3_CONFIG(BT_CODEC_CONFIG_LC3_FREQ_16KHZ, \
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BT_CODEC_CONFIG_LC3_DURATION_10, 40u, \
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BT_CODEC_META_CONTEXT_VOICE)
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/** @def BT_CODEC_LC3_CONFIG_24_1
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* @brief Helper to declare LC3 24.1 codec configuration
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*/
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#define BT_CODEC_LC3_CONFIG_24_1 \
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BT_CODEC_LC3_CONFIG(BT_CODEC_CONFIG_LC3_FREQ_24KHZ, \
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BT_CODEC_CONFIG_LC3_DURATION_7_5, 45u, \
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BT_CODEC_META_CONTEXT_VOICE)
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/** @def BT_CODEC_LC3_CONFIG_24_2
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* @brief Helper to declare LC3 24.2 codec configuration
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*/
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#define BT_CODEC_LC3_CONFIG_24_2 \
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BT_CODEC_LC3_CONFIG(BT_CODEC_CONFIG_LC3_FREQ_24KHZ, \
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BT_CODEC_CONFIG_LC3_DURATION_10, 60u, \
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BT_CODEC_META_CONTEXT_VOICE)
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/** @def BT_CODEC_LC3_CONFIG_32_1
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* @brief Helper to declare LC3 32.1 codec configuration
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*/
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#define BT_CODEC_LC3_CONFIG_32_1 \
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BT_CODEC_LC3_CONFIG(BT_CODEC_CONFIG_LC3_FREQ_32KHZ, \
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BT_CODEC_CONFIG_LC3_DURATION_7_5, 60u, \
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BT_CODEC_META_CONTEXT_VOICE)
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/** @def BT_CODEC_LC3_CONFIG_32_2
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* @brief Helper to declare LC3 32.2 codec configuration
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*/
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#define BT_CODEC_LC3_CONFIG_32_2 \
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BT_CODEC_LC3_CONFIG(BT_CODEC_CONFIG_LC3_FREQ_32KHZ, \
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BT_CODEC_CONFIG_LC3_DURATION_10, 80u, \
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BT_CODEC_META_CONTEXT_VOICE)
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/** @def BT_CODEC_LC3_CONFIG_441_1
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* @brief Helper to declare LC3 441.1 codec configuration
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*/
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#define BT_CODEC_LC3_CONFIG_441_1 \
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BT_CODEC_LC3_CONFIG(BT_CODEC_CONFIG_LC3_FREQ_44KHZ, \
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BT_CODEC_CONFIG_LC3_DURATION_7_5, 98u, \
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BT_CODEC_META_CONTEXT_MEDIA)
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/** @def BT_CODEC_LC3_CONFIG_441_2
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* @brief Helper to declare LC3 441.2 codec configuration
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*/
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#define BT_CODEC_LC3_CONFIG_441_2 \
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BT_CODEC_LC3_CONFIG(BT_CODEC_CONFIG_LC3_FREQ_44KHZ, \
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BT_CODEC_CONFIG_LC3_DURATION_10, 130u, \
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BT_CODEC_META_CONTEXT_MEDIA)
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/** @def BT_CODEC_LC3_CONFIG_48_1
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* @brief Helper to declare LC3 48.1 codec configuration
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*/
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#define BT_CODEC_LC3_CONFIG_48_1 \
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BT_CODEC_LC3_CONFIG(BT_CODEC_CONFIG_LC3_FREQ_48KHZ, \
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BT_CODEC_CONFIG_LC3_DURATION_7_5, 75u, \
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BT_CODEC_META_CONTEXT_MEDIA)
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/** @def BT_CODEC_LC3_CONFIG_48_2
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* @brief Helper to declare LC3 48.2 codec configuration
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*/
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#define BT_CODEC_LC3_CONFIG_48_2 \
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BT_CODEC_LC3_CONFIG(BT_CODEC_CONFIG_LC3_FREQ_48KHZ, \
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BT_CODEC_CONFIG_LC3_DURATION_10, 100u, \
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BT_CODEC_META_CONTEXT_MEDIA)
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/** @def BT_CODEC_LC3_CONFIG_48_3
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* @brief Helper to declare LC3 48.3 codec configuration
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*/
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#define BT_CODEC_LC3_CONFIG_48_3 \
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BT_CODEC_LC3_CONFIG(BT_CODEC_CONFIG_LC3_FREQ_48KHZ, \
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BT_CODEC_CONFIG_LC3_DURATION_7_5, 90u, \
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BT_CODEC_META_CONTEXT_MEDIA)
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/** @def BT_CODEC_LC3_CONFIG_48_4
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* @brief Helper to declare LC3 48.4 codec configuration
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*/
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#define BT_CODEC_LC3_CONFIG_48_4 \
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BT_CODEC_LC3_CONFIG(BT_CODEC_CONFIG_LC3_FREQ_48KHZ, \
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BT_CODEC_CONFIG_LC3_DURATION_10, 120u, \
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BT_CODEC_META_CONTEXT_MEDIA)
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/** @def BT_CODEC_LC3_CONFIG_48_5
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* @brief Helper to declare LC3 48.5 codec configuration
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*/
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#define BT_CODEC_LC3_CONFIG_48_5 \
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BT_CODEC_LC3_CONFIG(BT_CODEC_CONFIG_LC3_FREQ_48KHZ, \
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BT_CODEC_CONFIG_LC3_DURATION_7_5, 117u, \
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BT_CODEC_META_CONTEXT_MEDIA)
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/** @def BT_CODEC_LC3_CONFIG_48_6
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* @brief Helper to declare LC3 48.6 codec configuration
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*/
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#define BT_CODEC_LC3_CONFIG_48_6 \
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BT_CODEC_LC3_CONFIG(BT_CODEC_CONFIG_LC3_FREQ_48KHZ, \
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BT_CODEC_CONFIG_LC3_DURATION_10, 155u, \
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BT_CODEC_META_CONTEXT_MEDIA)
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/** @def BT_CODEC_LC3_QOS_7_5
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* @brief Helper to declare LC3 codec QoS for 7.5ms interval
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*/
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#define BT_CODEC_LC3_QOS_7_5(_framing, _sdu, _rtn, _latency, _pd) \
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BT_CODEC_QOS(7500u, _framing, BT_CODEC_QOS_2M, _sdu, _rtn, \
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_latency, _pd)
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/** @def BT_CODEC_LC3_QOS_7_5_UNFRAMED
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* @brief Helper to declare LC3 codec QoS for 7.5ms interval unframed input
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*/
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#define BT_CODEC_LC3_QOS_7_5_UNFRAMED(_sdu, _rtn, _latency, _pd) \
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BT_CODEC_QOS_UNFRAMED(7500u, _sdu, _rtn, _latency, _pd)
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/** @def BT_CODEC_LC3_QOS_10
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* @brief Helper to declare LC3 codec QoS for 10ms frame internal
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*/
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#define BT_CODEC_LC3_QOS_10(_framing, _sdu, _rtn, _latency, _pd) \
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BT_CODEC_QOS(10000u, _framing, BT_CODEC_QOS_2M, _sdu, _rtn, \
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_latency, _pd)
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/** @def BT_CODEC_LC3_QOS_10_UNFRAMED
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* @brief Helper to declare LC3 codec QoS for 10ms interval unframed input
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*/
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#define BT_CODEC_LC3_QOS_10_UNFRAMED(_sdu, _rtn, _latency, _pd) \
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BT_CODEC_QOS_UNFRAMED(10000u, _sdu, _rtn, _latency, _pd)
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#ifdef __cplusplus
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}
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#endif
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/**
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* @}
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*/
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#endif /* ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_LC3_H_ */
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