154 lines
5.7 KiB
C
154 lines
5.7 KiB
C
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef __ESP_AVRC_API_H__
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#define __ESP_AVRC_API_H__
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#include <stdint.h>
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#include <stdbool.h>
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#include "esp_err.h"
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#include "esp_bt_defs.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/// AVRC feature bit mask
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typedef enum {
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ESP_AVRC_FEAT_RCTG = 0x0001, /*!< remote control target */
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ESP_AVRC_FEAT_RCCT = 0x0002, /*!< remote control controller */
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ESP_AVRC_FEAT_VENDOR = 0x0008, /*!< remote control vendor dependent commands */
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ESP_AVRC_FEAT_BROWSE = 0x0010, /*!< use browsing channel */
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ESP_AVRC_FEAT_META_DATA = 0x0040, /*!< remote control metadata transfer command/response */
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ESP_AVRC_FEAT_ADV_CTRL = 0x0200, /*!< remote control advanced control commmand/response */
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} esp_avrc_features_t;
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/// AVRC passthrough command code
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typedef enum {
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ESP_AVRC_PT_CMD_PLAY = 0x44, /*!< play */
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ESP_AVRC_PT_CMD_STOP = 0x45, /*!< stop */
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ESP_AVRC_PT_CMD_PAUSE = 0x46, /*!< pause */
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ESP_AVRC_PT_CMD_FORWARD = 0x4B, /*!< forward */
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ESP_AVRC_PT_CMD_BACKWARD = 0x4C /*!< backward */
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} esp_avrc_pt_cmd_t;
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/// AVRC passthrough command state
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typedef enum {
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ESP_AVRC_PT_CMD_STATE_PRESSED = 0, /*!< key pressed */
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ESP_AVRC_PT_CMD_STATE_RELEASED = 1 /*!< key released */
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} esp_avrc_pt_cmd_state_t;
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/// AVRC Controller callback events
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typedef enum {
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ESP_AVRC_CT_CONNECTION_STATE_EVT = 0, /*!< connection state changed event */
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ESP_AVRC_CT_PASSTHROUGH_RSP_EVT = 1, /*!< passthrough response event */
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ESP_AVRC_CT_MAX_EVT
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} esp_avrc_ct_cb_event_t;
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/// AVRC controller callback parameters
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typedef union {
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/**
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* @brief ESP_AVRC_CT_CONNECTION_STATE_EVT
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*/
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struct avrc_ct_conn_stat_param {
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bool connected; /*!< whether AVRC connection is set up */
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uint32_t feat_mask; /*!< AVRC feature mask of remote device */
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esp_bd_addr_t remote_bda; /*!< remote bluetooth device address */
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} conn_stat; /*!< AVRC connection status */
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/**
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* @brief ESP_AVRC_CT_PASSTHROUGH_RSP_EVT
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*/
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struct avrc_ct_psth_rsp_param {
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uint8_t tl; /*!< transaction label, 0 to 15 */
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uint8_t key_code; /*!< passthrough command code */
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uint8_t key_state; /*!< 0 for PRESSED, 1 for RELEASED */
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} psth_rsp; /*!< passthrough command response */
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} esp_avrc_ct_cb_param_t;
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/**
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* @brief AVRCP controller callback function type
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* @param event : Event type
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* @param param : Pointer to callback parameter union
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*/
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typedef void (* esp_avrc_ct_cb_t)(esp_avrc_ct_cb_event_t event, esp_avrc_ct_cb_param_t *param);
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/**
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* @brief Register application callbacks to AVRCP module; for now only AVRCP Controller
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* role is supported. This function should be called after esp_bluedroid_enable()
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* completes successfully
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*
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* @param[in] callback: AVRCP controller callback function
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*
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* @return
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* - ESP_OK: success
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* - ESP_INVALID_STATE: if bluetooth stack is not yet enabled
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* - ESP_FAIL: others
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*
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*/
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esp_err_t esp_avrc_ct_register_callback(esp_avrc_ct_cb_t callback);
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/**
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*
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* @brief Initialize the bluetooth AVRCP controller module, This function should be called
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* after esp_bluedroid_enable() completes successfully
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*
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* @return
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* - ESP_OK: success
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* - ESP_INVALID_STATE: if bluetooth stack is not yet enabled
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* - ESP_FAIL: others
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*
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*/
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esp_err_t esp_avrc_ct_init(void);
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/**
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*
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* @brief De-initialize AVRCP controller module. This function should be called after
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* after esp_bluedroid_enable() completes successfully
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*
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* @return
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* - ESP_OK: success
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* - ESP_INVALID_STATE: if bluetooth stack is not yet enabled
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* - ESP_FAIL: others
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*/
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esp_err_t esp_avrc_ct_deinit(void);
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/**
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* @brief Send passthrough command to AVRCP target, This function should be called after
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* ESP_AVRC_CT_CONNECTION_STATE_EVT is received and AVRCP connection is established
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*
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* @param[in] tl : transaction label, 0 to 15, consecutive commands should use different values.
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* @param[in] key_code : passthrough command code, e.g. ESP_AVRC_PT_CMD_PLAY, ESP_AVRC_PT_CMD_STOP, etc.
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* @param[in] key_state : passthrough command key state, ESP_AVRC_PT_CMD_STATE_PRESSED or
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* ESP_AVRC_PT_CMD_STATE_PRESSED
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*
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* @return
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* - ESP_OK: success
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* - ESP_INVALID_STATE: if bluetooth stack is not yet enabled
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* - ESP_FAIL: others
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*/
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esp_err_t esp_avrc_ct_send_passthrough_cmd(uint8_t tl, uint8_t key_code, uint8_t key_state);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __ESP_AVRC_API_H__ */
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