1 /* 2 * Copyright (c) 2025 Nordic Semiconductor ASA 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 #ifndef SAMPLE_BAP_BROADCAST_SINK_STREAM_RX_H 7 #define SAMPLE_BAP_BROADCAST_SINK_STREAM_RX_H 8 9 #include <stddef.h> 10 #include <stdint.h> 11 12 #include <zephyr/autoconf.h> 13 #include <zephyr/bluetooth/audio/audio.h> 14 #include <zephyr/bluetooth/audio/bap.h> 15 #include <zephyr/bluetooth/iso.h> 16 #include <zephyr/kernel.h> 17 #include <zephyr/net_buf.h> 18 19 #if defined(CONFIG_LIBLC3) 20 #include <lc3.h> 21 #endif /* defined(CONFIG_LIBLC3) */ 22 23 struct stream_rx { 24 /* A BAP stream object */ 25 struct bt_bap_stream stream; 26 #if CONFIG_INFO_REPORTING_INTERVAL > 0 27 /** Struct containing information useful for logging purposes */ 28 struct { 29 /** Total Number of SDUs received */ 30 size_t recv_cnt; 31 /** Number of lost SDUs */ 32 size_t loss_cnt; 33 /** Number of SDUs containing errors */ 34 size_t error_cnt; 35 /** Number of valid SDUs received */ 36 size_t valid_cnt; 37 /** Number of empty SDUs received */ 38 size_t empty_sdu_cnt; 39 /** Number of SDUs with duplicated packet sequence number received */ 40 size_t dup_psn_cnt; 41 /** Number of SDUs with duplicated timestamps received */ 42 size_t dup_ts_cnt; 43 /** The last received timestamp to track dup_ts_cnt */ 44 uint32_t last_ts; 45 /** The last received sequence number to track dup_psn_cnt */ 46 uint16_t last_seq_num; 47 #if CONFIG_LIBLC3 > 0 48 /** Number of SDUs decoded */ 49 size_t lc3_decoded_cnt; 50 #endif /* CONFIG_LIBLC3 > 0 */ 51 } reporting_info; 52 #endif /* CONFIG_INFO_REPORTING_INTERVAL > 0 */ 53 54 #if defined(CONFIG_LIBLC3) 55 /** Octets per frame - Used to validate that the incoming data is of correct size */ 56 uint16_t lc3_octets_per_frame; 57 /** Frame blocks per SDU - Used to split the SDU into frame blocks when decoding */ 58 uint8_t lc3_frame_blocks_per_sdu; 59 60 /** Number of channels - Used to split the SDU into frame blocks when decoding */ 61 uint8_t lc3_chan_cnt; 62 63 /** 64 * @brief The configured channels of the stream 65 * 66 * Used to determine whether to send data to USB and count number of channels 67 */ 68 enum bt_audio_location lc3_chan_allocation; 69 70 /** Memory use for the LC3 decoder - Supports any configuration */ 71 lc3_decoder_mem_48k_t lc3_decoder_mem; 72 /** Reference to the LC3 decoder */ 73 lc3_decoder_t lc3_decoder; 74 #endif /* defined(CONFIG_LIBLC3) */ 75 }; 76 77 /** 78 * @brief Function to call for each SDU received 79 * 80 * Will decode with LC3 and send to USB if enabled 81 */ 82 void stream_rx_recv(struct bt_bap_stream *bap_stream, const struct bt_iso_recv_info *info, 83 struct net_buf *buf); 84 85 size_t stream_rx_get_streaming_cnt(void); 86 int stream_rx_started(struct bt_bap_stream *bap_stream); 87 int stream_rx_stopped(struct bt_bap_stream *bap_stream); 88 void stream_rx_get_streams( 89 struct bt_bap_stream *bap_streams[CONFIG_BT_BAP_BROADCAST_SNK_STREAM_COUNT]); 90 91 #endif /* SAMPLE_BAP_BROADCAST_SINK_STREAM_RX_H */ 92
