111 lines
3.2 KiB
C
111 lines
3.2 KiB
C
/**
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* @file
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* @brief Internal Header for Bluetooth Volume Control Service (VCS).
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*
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* Copyright (c) 2020 Bose Corporation
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* Copyright (c) 2020-2021 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_VCS_INTERNAL_
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#define ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_VCS_INTERNAL_
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/* VCS opcodes */
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#define BT_VCS_OPCODE_REL_VOL_DOWN 0x00
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#define BT_VCS_OPCODE_REL_VOL_UP 0x01
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#define BT_VCS_OPCODE_UNMUTE_REL_VOL_DOWN 0x02
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#define BT_VCS_OPCODE_UNMUTE_REL_VOL_UP 0x03
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#define BT_VCS_OPCODE_SET_ABS_VOL 0x04
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#define BT_VCS_OPCODE_UNMUTE 0x05
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#define BT_VCS_OPCODE_MUTE 0x06
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struct vcs_state {
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uint8_t volume;
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uint8_t mute;
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uint8_t change_counter;
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} __packed;
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struct vcs_control {
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uint8_t opcode;
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uint8_t counter;
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} __packed;
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struct vcs_control_vol {
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struct vcs_control cp;
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uint8_t volume;
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} __packed;
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#if defined(CONFIG_BT_VCS_CLIENT)
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struct bt_vcs_client {
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struct vcs_state state;
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uint8_t flags;
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uint16_t start_handle;
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uint16_t end_handle;
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uint16_t state_handle;
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uint16_t control_handle;
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uint16_t flag_handle;
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struct bt_gatt_subscribe_params state_sub_params;
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struct bt_gatt_discover_params state_sub_disc_params;
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struct bt_gatt_subscribe_params flag_sub_params;
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struct bt_gatt_discover_params flag_sub_disc_params;
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bool cp_retried;
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bool busy;
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struct vcs_control_vol cp_val;
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struct bt_gatt_write_params write_params;
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struct bt_gatt_read_params read_params;
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struct bt_gatt_discover_params discover_params;
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struct bt_uuid_16 uuid;
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struct bt_conn *conn;
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uint8_t vocs_inst_cnt;
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struct bt_vocs *vocs[CONFIG_BT_VCS_CLIENT_MAX_VOCS_INST];
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uint8_t aics_inst_cnt;
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struct bt_aics *aics[CONFIG_BT_VCS_CLIENT_MAX_AICS_INST];
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};
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#endif /* CONFIG_BT_VCS_CLIENT */
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#if defined(CONFIG_BT_VCS)
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struct bt_vcs_server {
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struct vcs_state state;
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uint8_t flags;
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struct bt_vcs_cb *cb;
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uint8_t volume_step;
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struct bt_gatt_service *service_p;
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struct bt_vocs *vocs_insts[CONFIG_BT_VCS_VOCS_INSTANCE_COUNT];
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struct bt_aics *aics_insts[CONFIG_BT_VCS_AICS_INSTANCE_COUNT];
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};
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#endif /* CONFIG_BT_VCS */
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/* Struct used as a common type for the api */
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struct bt_vcs {
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bool client_instance;
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union {
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#if defined(CONFIG_BT_VCS)
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struct bt_vcs_server srv;
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#endif /* CONFIG_BT_VCS */
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#if defined(CONFIG_BT_VCS_CLIENT)
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struct bt_vcs_client cli;
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#endif /* CONFIG_BT_VCS_CLIENT */
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};
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};
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int bt_vcs_client_included_get(struct bt_vcs *vcs,
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struct bt_vcs_included *included);
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int bt_vcs_client_read_vol_state(struct bt_vcs *vcs);
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int bt_vcs_client_read_flags(struct bt_vcs *vcs);
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int bt_vcs_client_vol_down(struct bt_vcs *vcs);
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int bt_vcs_client_vol_up(struct bt_vcs *vcs);
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int bt_vcs_client_unmute_vol_down(struct bt_vcs *vcs);
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int bt_vcs_client_unmute_vol_up(struct bt_vcs *vcs);
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int bt_vcs_client_set_volume(struct bt_vcs *vcs, uint8_t volume);
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int bt_vcs_client_unmute(struct bt_vcs *vcs);
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int bt_vcs_client_mute(struct bt_vcs *vcs);
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bool bt_vcs_client_valid_vocs_inst(struct bt_vcs *vcs, struct bt_vocs *vocs);
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bool bt_vcs_client_valid_aics_inst(struct bt_vcs *vcs, struct bt_aics *aics);
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#endif /* ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_VCS_INTERNAL_*/
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