1 /* btp_bap_audio_stream.h - Bluetooth BAP Tester */ 2 3 /* 4 * Copyright (c) 2023 Codecoup 5 * Copyright (c) 2024 Nordic Semiconductor ASA 6 * 7 * SPDX-License-Identifier: Apache-2.0 8 */ 9 10 #ifndef BTP_BAP_AUDIO_STREAM_H 11 #define BTP_BAP_AUDIO_STREAM_H 12 13 #include <stdint.h> 14 15 #include <zephyr/bluetooth/conn.h> 16 #include <zephyr/bluetooth/audio/bap.h> 17 #include <zephyr/bluetooth/audio/cap.h> 18 #include <zephyr/sys/util_macro.h> 19 #include <zephyr/types.h> 20 21 struct btp_bap_audio_stream { 22 struct bt_cap_stream cap_stream; 23 }; 24 25 /** 26 * @brief Initialize TX 27 * 28 * This will initialize TX if not already initialized. This creates and starts a thread that 29 * will attempt to send data on all streams registered with btp_bap_audio_stream_tx_register(). 30 */ 31 void btp_bap_audio_stream_tx_init(void); 32 33 /** 34 * @brief Register a stream for TX 35 * 36 * This will add it to the list of streams the TX thread will attempt to send on. 37 * 38 * @param bap_stream The stream to register 39 * 40 * @retval 0 on success 41 * @retval -EINVAL @p bap_stream is NULL 42 * @retval -EINVAL @p bap_stream is not configured for TX 43 * @retval -EINVAL @p bap_stream.codec_cfg contains invalid values 44 * @retval -ENOMEM if not more streams can be registered 45 */ 46 int btp_bap_audio_stream_tx_register(struct btp_bap_audio_stream *stream); 47 48 /** 49 * @brief Unregister a stream for TX 50 * 51 * This will remove it to the list of streams the TX thread will attempt to send on. 52 * 53 * @param bap_stream The stream to unregister 54 * 55 * @retval 0 on success 56 * @retval -EINVAL @p bap_stream is NULL 57 * @retval -EINVAL @p bap_stream is not configured for TX 58 * @retval -EALREADY @p bap_stream is currently not registered 59 */ 60 int btp_bap_audio_stream_tx_unregister(struct btp_bap_audio_stream *stream); 61 62 /** 63 * @brief Test if the provided stream has been configured for TX 64 * 65 * @param bap_stream The stream to test for TX support 66 * 67 * @retval true if it has been configured for TX, and false if not 68 */ 69 bool btp_bap_audio_stream_can_send(struct btp_bap_audio_stream *stream); 70 71 /** 72 * @brief Callback to indicate a TX complete 73 * 74 * @param stream The stream that completed TX 75 */ 76 void btp_bap_audio_stream_sent_cb(struct bt_bap_stream *stream); 77 78 /* Generate 310 octets of mock data going 0x00, 0x01, ..., 0xff, 0x00, 0x01, ..., 0xff, etc 79 * For 2 x 155 = 310 octets is used as the maximum number of channels per stream defined by BAP is 2 80 * and the maximum octets per codec frame is 155 for the 48_6 configs. 81 * If we ever want to send multiple frames per SDU, we can simply multiply this value. 82 */ 83 #define BTP_BAP_AUDIO_STREAM_ISO_DATA_GEN(_i, _) (uint8_t) _i 84 static const uint8_t btp_bap_audio_stream_mock_data[] = { 85 LISTIFY(310, BTP_BAP_AUDIO_STREAM_ISO_DATA_GEN, (,)), 86 }; 87 #endif /* BTP_BAP_AUDIO_STREAM_H */ 88
