OVMS3-idf/components/bt/bluedroid/api/include/esp_avrc_api.h

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