1 /** @file 2 * @brief Internal APIs for Bluetooth MCP. 3 */ 4 5 /* 6 * Copyright (c) 2019 - 2021 Nordic Semiconductor ASA 7 * 8 * SPDX-License-Identifier: Apache-2.0 9 */ 10 11 #ifndef ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_MCP_INTERNAL_ 12 #define ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_MCP_INTERNAL_ 13 14 #include <stdbool.h> 15 #include <stdint.h> 16 17 #include <zephyr/autoconf.h> 18 #include <zephyr/bluetooth/audio/mcs.h> 19 #include <zephyr/bluetooth/conn.h> 20 #include <zephyr/bluetooth/gatt.h> 21 #include <zephyr/bluetooth/services/ots.h> 22 #include <zephyr/types.h> 23 24 struct mcs_instance_t *lookup_inst_by_conn(struct bt_conn *conn); 25 26 struct mcs_instance_t { 27 struct bt_conn *conn; 28 uint16_t start_handle; 29 uint16_t end_handle; 30 uint16_t player_name_handle; 31 #ifdef CONFIG_BT_MCC_OTS 32 uint16_t icon_obj_id_handle; 33 #endif /* CONFIG_BT_MCC_OTS */ 34 #if defined(CONFIG_BT_MCC_READ_MEDIA_PLAYER_ICON_URL) 35 uint16_t icon_url_handle; 36 #endif /* defined(CONFIG_BT_MCC_READ_MEDIA_PLAYER_ICON_URL) */ 37 uint16_t track_changed_handle; 38 #if defined(CONFIG_BT_MCC_READ_TRACK_TITLE) 39 uint16_t track_title_handle; 40 #endif /* defined(CONFIG_BT_MCC_READ_TRACK_TITLE) */ 41 #if defined(CONFIG_BT_MCC_READ_TRACK_DURATION) 42 uint16_t track_duration_handle; 43 #endif /* defined(CONFIG_BT_MCC_READ_TRACK_DURATION) */ 44 #if defined(CONFIG_BT_MCC_READ_TRACK_POSITION) || defined(CONFIG_BT_MCC_SET_TRACK_POSITION) 45 uint16_t track_position_handle; 46 #endif /* defined(CONFIG_BT_MCC_READ_TRACK_POSITION) || defined(CONFIG_BT_MCC_SET_TRACK_POSITION) */ 47 #if defined(CONFIG_BT_MCC_READ_PLAYBACK_SPEED) || defined(CONFIG_BT_MCC_SET_PLAYBACK_SPEED) 48 uint16_t playback_speed_handle; 49 #endif /* defined (CONFIG_BT_MCC_READ_PLAYBACK_SPEED) || */ 50 /* defined (CONFIG_BT_MCC_SET_PLAYBACK_SPEED) */ 51 #if defined(CONFIG_BT_MCC_READ_SEEKING_SPEED) 52 uint16_t seeking_speed_handle; 53 #endif /* defined (CONFIG_BT_MCC_READ_SEEKING_SPEED) */ 54 #ifdef CONFIG_BT_MCC_OTS 55 uint16_t segments_obj_id_handle; 56 uint16_t current_track_obj_id_handle; 57 uint16_t next_track_obj_id_handle; 58 uint16_t current_group_obj_id_handle; 59 uint16_t parent_group_obj_id_handle; 60 #endif /* CONFIG_BT_MCC_OTS */ 61 #if defined(CONFIG_BT_MCC_READ_PLAYING_ORDER) || defined(CONFIG_BT_MCC_SET_PLAYING_ORDER) 62 uint16_t playing_order_handle; 63 #endif /* defined(CONFIG_BT_MCC_READ_PLAYING_ORDER) || defined(CONFIG_BT_MCC_SET_PLAYING_ORDER) */ 64 #if defined(CONFIG_BT_MCC_READ_PLAYING_ORDER_SUPPORTED) 65 uint16_t playing_orders_supported_handle; 66 #endif /* defined(CONFIG_BT_MCC_READ_PLAYING_ORDER_SUPPORTED) */ 67 #if defined(CONFIG_BT_MCC_READ_MEDIA_STATE) 68 uint16_t media_state_handle; 69 #endif /* defined(CONFIG_BT_MCC_READ_MEDIA_STATE) */ 70 uint16_t cp_handle; 71 #if defined(CONFIG_BT_MCC_READ_MEDIA_CONTROL_POINT_OPCODES_SUPPORTED) 72 uint16_t opcodes_supported_handle; 73 #endif /* defined(CONFIG_BT_MCC_READ_MEDIA_CONTROL_POINT_OPCODES_SUPPORTED) */ 74 #ifdef CONFIG_BT_MCC_OTS 75 uint16_t scp_handle; 76 uint16_t search_results_obj_id_handle; 77 #endif /* CONFIG_BT_MCC_OTS */ 78 #if defined(CONFIG_BT_MCC_READ_CONTENT_CONTROL_ID) 79 uint16_t content_control_id_handle; 80 #endif /* defined(CONFIG_BT_MCC_READ_CONTENT_CONTROL_ID) */ 81 82 83 /* The write buffer is used for 84 * - track position (4 octets) 85 * - playback speed (1 octet) 86 * - playing order (1 octet) 87 * - the control point (5 octets) 88 * (1 octet opcode + optionally 4 octet param) 89 * (mpl_cmd.opcode + mpl_cmd.param) 90 * If the object transfer client is included, it is also used for 91 * - object IDs (6 octets - BT_OTS_OBJ_ID_SIZE) and 92 * - the search control point (64 octets - SEARCH_LEN_MAX) 93 * 94 * If there is no OTC, the largest is control point 95 * If OTC is included, the largest is the search control point 96 */ 97 #ifdef CONFIG_BT_MCC_OTS 98 char write_buf[SEARCH_LEN_MAX]; 99 #else 100 /* Trick to be able to use sizeof on members of a struct type */ 101 /* TODO: Rewrite the mpl_cmd to have the "use_param" parameter */ 102 /* separately, and the opcode and param alone as a struct */ 103 char write_buf[sizeof(((struct mpl_cmd *)0)->opcode) + 104 sizeof(((struct mpl_cmd *)0)->param)]; 105 #endif /* CONFIG_BT_MCC_OTS */ 106 107 struct bt_gatt_discover_params discover_params; 108 struct bt_gatt_read_params read_params; 109 struct bt_gatt_write_params write_params; 110 111 /** Any fields below here cannot be memset as part of a reset */ 112 bool busy; 113 114 struct bt_gatt_subscribe_params player_name_sub_params; 115 struct bt_gatt_subscribe_params track_changed_sub_params; 116 #if defined(CONFIG_BT_MCC_READ_TRACK_TITLE_ENABLE_SUBSCRIPTION) 117 struct bt_gatt_subscribe_params track_title_sub_params; 118 #endif /* defined(CONFIG_BT_MCC_READ_TRACK_TITLE_ENABLE_SUBSCRIPTION) */ 119 #if defined(CONFIG_BT_MCC_READ_TRACK_DURATION) 120 struct bt_gatt_subscribe_params track_duration_sub_params; 121 #endif /* defined(CONFIG_BT_MCC_READ_TRACK_DURATION) */ 122 #if defined(CONFIG_BT_MCC_READ_TRACK_POSITION) 123 struct bt_gatt_subscribe_params track_position_sub_params; 124 #endif /* defined(CONFIG_BT_MCC_READ_TRACK_POSITION)*/ 125 #if defined(CONFIG_BT_MCC_READ_PLAYBACK_SPEED) 126 struct bt_gatt_subscribe_params playback_speed_sub_params; 127 #endif /* defined (CONFIG_BT_MCC_READ_PLAYBACK_SPEED) */ 128 #if defined(CONFIG_BT_MCC_READ_SEEKING_SPEED) 129 struct bt_gatt_subscribe_params seeking_speed_sub_params; 130 #endif /* defined (CONFIG_BT_MCC_READ_SEEKING_SPEED) */ 131 #ifdef CONFIG_BT_MCC_OTS 132 struct bt_gatt_subscribe_params current_track_obj_sub_params; 133 struct bt_gatt_subscribe_params next_track_obj_sub_params; 134 struct bt_gatt_subscribe_params parent_group_obj_sub_params; 135 struct bt_gatt_subscribe_params current_group_obj_sub_params; 136 #endif /* CONFIG_BT_MCC_OTS */ 137 #if defined(CONFIG_BT_MCC_READ_PLAYING_ORDER) 138 struct bt_gatt_subscribe_params playing_order_sub_params; 139 #endif /* defined(CONFIG_BT_MCC_READ_PLAYING_ORDER) */ 140 #if defined(CONFIG_BT_MCC_READ_MEDIA_STATE) 141 struct bt_gatt_subscribe_params media_state_sub_params; 142 #endif /* defined(CONFIG_BT_MCC_READ_MEDIA_STATE) */ 143 struct bt_gatt_subscribe_params cp_sub_params; 144 #if defined(CONFIG_BT_MCC_READ_MEDIA_CONTROL_POINT_OPCODES_SUPPORTED) 145 struct bt_gatt_subscribe_params opcodes_supported_sub_params; 146 #endif /* defined(CONFIG_BT_MCC_READ_MEDIA_CONTROL_POINT_OPCODES_SUPPORTED) */ 147 #ifdef CONFIG_BT_MCC_OTS 148 struct bt_gatt_subscribe_params scp_sub_params; 149 struct bt_gatt_subscribe_params search_results_obj_sub_params; 150 #endif /* CONFIG_BT_MCC_OTS */ 151 152 #ifdef CONFIG_BT_MCC_OTS 153 struct bt_ots_client otc; 154 #endif /* CONFIG_BT_MCC_OTS */ 155 }; 156 157 #endif /* ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_MCP_INTERNAL_ */ 158
