5e34127e4b
Replace the busy boolean flag with an atomic value. This prevents any race conditions with the MCC implementation. Signed-off-by: Emil Gydesen <emil.gydesen@nordicsemi.no>
166 lines
6.4 KiB
C
166 lines
6.4 KiB
C
/** @file
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* @brief Internal APIs for Bluetooth MCP.
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*/
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/*
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* Copyright (c) 2019 - 2021 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_MCP_INTERNAL_
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#define ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_MCP_INTERNAL_
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#include <stdbool.h>
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#include <stdint.h>
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#include <zephyr/autoconf.h>
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#include <zephyr/bluetooth/audio/mcs.h>
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#include <zephyr/bluetooth/conn.h>
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#include <zephyr/bluetooth/gatt.h>
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#include <zephyr/bluetooth/services/ots.h>
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#include <zephyr/sys/atomic.h>
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#include <zephyr/types.h>
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struct mcs_instance_t *lookup_inst_by_conn(struct bt_conn *conn);
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enum mcc_flag {
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MCC_FLAG_BUSY,
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MCC_FLAG_NUM_FLAGS, /* keep as last */
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};
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struct mcs_instance_t {
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struct bt_conn *conn;
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uint16_t start_handle;
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uint16_t end_handle;
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uint16_t player_name_handle;
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#ifdef CONFIG_BT_MCC_OTS
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uint16_t icon_obj_id_handle;
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#endif /* CONFIG_BT_MCC_OTS */
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#if defined(CONFIG_BT_MCC_READ_MEDIA_PLAYER_ICON_URL)
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uint16_t icon_url_handle;
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#endif /* defined(CONFIG_BT_MCC_READ_MEDIA_PLAYER_ICON_URL) */
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uint16_t track_changed_handle;
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#if defined(CONFIG_BT_MCC_READ_TRACK_TITLE)
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uint16_t track_title_handle;
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#endif /* defined(CONFIG_BT_MCC_READ_TRACK_TITLE) */
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#if defined(CONFIG_BT_MCC_READ_TRACK_DURATION)
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uint16_t track_duration_handle;
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#endif /* defined(CONFIG_BT_MCC_READ_TRACK_DURATION) */
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#if defined(CONFIG_BT_MCC_READ_TRACK_POSITION) || defined(CONFIG_BT_MCC_SET_TRACK_POSITION)
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uint16_t track_position_handle;
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#endif /* defined(CONFIG_BT_MCC_READ_TRACK_POSITION) || defined(CONFIG_BT_MCC_SET_TRACK_POSITION) */
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#if defined(CONFIG_BT_MCC_READ_PLAYBACK_SPEED) || defined(CONFIG_BT_MCC_SET_PLAYBACK_SPEED)
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uint16_t playback_speed_handle;
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#endif /* defined (CONFIG_BT_MCC_READ_PLAYBACK_SPEED) || */
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/* defined (CONFIG_BT_MCC_SET_PLAYBACK_SPEED) */
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#if defined(CONFIG_BT_MCC_READ_SEEKING_SPEED)
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uint16_t seeking_speed_handle;
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#endif /* defined (CONFIG_BT_MCC_READ_SEEKING_SPEED) */
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#ifdef CONFIG_BT_MCC_OTS
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uint16_t segments_obj_id_handle;
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uint16_t current_track_obj_id_handle;
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uint16_t next_track_obj_id_handle;
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uint16_t current_group_obj_id_handle;
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uint16_t parent_group_obj_id_handle;
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#endif /* CONFIG_BT_MCC_OTS */
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#if defined(CONFIG_BT_MCC_READ_PLAYING_ORDER) || defined(CONFIG_BT_MCC_SET_PLAYING_ORDER)
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uint16_t playing_order_handle;
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#endif /* defined(CONFIG_BT_MCC_READ_PLAYING_ORDER) || defined(CONFIG_BT_MCC_SET_PLAYING_ORDER) */
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#if defined(CONFIG_BT_MCC_READ_PLAYING_ORDER_SUPPORTED)
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uint16_t playing_orders_supported_handle;
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#endif /* defined(CONFIG_BT_MCC_READ_PLAYING_ORDER_SUPPORTED) */
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#if defined(CONFIG_BT_MCC_READ_MEDIA_STATE)
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uint16_t media_state_handle;
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#endif /* defined(CONFIG_BT_MCC_READ_MEDIA_STATE) */
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uint16_t cp_handle;
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#if defined(CONFIG_BT_MCC_READ_MEDIA_CONTROL_POINT_OPCODES_SUPPORTED)
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uint16_t opcodes_supported_handle;
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#endif /* defined(CONFIG_BT_MCC_READ_MEDIA_CONTROL_POINT_OPCODES_SUPPORTED) */
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#ifdef CONFIG_BT_MCC_OTS
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uint16_t scp_handle;
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uint16_t search_results_obj_id_handle;
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#endif /* CONFIG_BT_MCC_OTS */
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#if defined(CONFIG_BT_MCC_READ_CONTENT_CONTROL_ID)
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uint16_t content_control_id_handle;
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#endif /* defined(CONFIG_BT_MCC_READ_CONTENT_CONTROL_ID) */
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/* The write buffer is used for
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* - track position (4 octets)
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* - playback speed (1 octet)
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* - playing order (1 octet)
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* - the control point (5 octets)
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* (1 octet opcode + optionally 4 octet param)
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* (mpl_cmd.opcode + mpl_cmd.param)
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* If the object transfer client is included, it is also used for
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* - object IDs (6 octets - BT_OTS_OBJ_ID_SIZE) and
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* - the search control point (64 octets - SEARCH_LEN_MAX)
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*
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* If there is no OTC, the largest is control point
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* If OTC is included, the largest is the search control point
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*/
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#ifdef CONFIG_BT_MCC_OTS
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char write_buf[SEARCH_LEN_MAX];
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#else
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/* Trick to be able to use sizeof on members of a struct type */
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/* TODO: Rewrite the mpl_cmd to have the "use_param" parameter */
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/* separately, and the opcode and param alone as a struct */
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char write_buf[sizeof(((struct mpl_cmd *)0)->opcode) +
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sizeof(((struct mpl_cmd *)0)->param)];
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#endif /* CONFIG_BT_MCC_OTS */
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struct bt_gatt_discover_params discover_params;
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struct bt_gatt_read_params read_params;
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struct bt_gatt_write_params write_params;
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/** Any fields below here cannot be memset as part of a reset */
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struct bt_gatt_subscribe_params player_name_sub_params;
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struct bt_gatt_subscribe_params track_changed_sub_params;
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#if defined(CONFIG_BT_MCC_READ_TRACK_TITLE_ENABLE_SUBSCRIPTION)
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struct bt_gatt_subscribe_params track_title_sub_params;
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#endif /* defined(CONFIG_BT_MCC_READ_TRACK_TITLE_ENABLE_SUBSCRIPTION) */
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#if defined(CONFIG_BT_MCC_READ_TRACK_DURATION)
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struct bt_gatt_subscribe_params track_duration_sub_params;
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#endif /* defined(CONFIG_BT_MCC_READ_TRACK_DURATION) */
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#if defined(CONFIG_BT_MCC_READ_TRACK_POSITION)
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struct bt_gatt_subscribe_params track_position_sub_params;
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#endif /* defined(CONFIG_BT_MCC_READ_TRACK_POSITION)*/
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#if defined(CONFIG_BT_MCC_READ_PLAYBACK_SPEED)
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struct bt_gatt_subscribe_params playback_speed_sub_params;
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#endif /* defined (CONFIG_BT_MCC_READ_PLAYBACK_SPEED) */
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#if defined(CONFIG_BT_MCC_READ_SEEKING_SPEED)
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struct bt_gatt_subscribe_params seeking_speed_sub_params;
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#endif /* defined (CONFIG_BT_MCC_READ_SEEKING_SPEED) */
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#ifdef CONFIG_BT_MCC_OTS
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struct bt_gatt_subscribe_params current_track_obj_sub_params;
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struct bt_gatt_subscribe_params next_track_obj_sub_params;
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struct bt_gatt_subscribe_params parent_group_obj_sub_params;
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struct bt_gatt_subscribe_params current_group_obj_sub_params;
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#endif /* CONFIG_BT_MCC_OTS */
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#if defined(CONFIG_BT_MCC_READ_PLAYING_ORDER)
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struct bt_gatt_subscribe_params playing_order_sub_params;
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#endif /* defined(CONFIG_BT_MCC_READ_PLAYING_ORDER) */
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#if defined(CONFIG_BT_MCC_READ_MEDIA_STATE)
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struct bt_gatt_subscribe_params media_state_sub_params;
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#endif /* defined(CONFIG_BT_MCC_READ_MEDIA_STATE) */
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struct bt_gatt_subscribe_params cp_sub_params;
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#if defined(CONFIG_BT_MCC_READ_MEDIA_CONTROL_POINT_OPCODES_SUPPORTED)
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struct bt_gatt_subscribe_params opcodes_supported_sub_params;
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#endif /* defined(CONFIG_BT_MCC_READ_MEDIA_CONTROL_POINT_OPCODES_SUPPORTED) */
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#ifdef CONFIG_BT_MCC_OTS
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struct bt_gatt_subscribe_params scp_sub_params;
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struct bt_gatt_subscribe_params search_results_obj_sub_params;
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#endif /* CONFIG_BT_MCC_OTS */
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#ifdef CONFIG_BT_MCC_OTS
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struct bt_ots_client otc;
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#endif /* CONFIG_BT_MCC_OTS */
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ATOMIC_DEFINE(flags, MCC_FLAG_NUM_FLAGS);
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};
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#endif /* ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_MCP_INTERNAL_ */
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