OVMS3-idf/components/bt/bluedroid/api/include/esp_avrc_api.h
wangmengyang e07b43e924 component/bt: add AVRC event for remote features indication
1. remove the feature mask parameter from AVRC connection state event, as the AVCTP connection can be initiated by remote device before service discovery to remote device is performed. \
In this case, AVRCP connection state event may not be reported after connection initated by remote device is established.
2. remove ESP_AVRC_CT_MAX_EVT
3. add more documentations to AVRC APIs
2018-01-09 16:33:48 +08:00

288 lines
12 KiB
C

// 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>
#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_REWIND = 0x48, /*!< rewind */
ESP_AVRC_PT_CMD_FAST_FORWARD = 0x49 /*!< fast forward */
} 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_METADATA_RSP_EVT = 2, /*!< metadata response event */
ESP_AVRC_CT_PLAY_STATUS_RSP_EVT = 3, /*!< play status response event */
ESP_AVRC_CT_CHANGE_NOTIFY_EVT = 4, /*!< notification event */
ESP_AVRC_CT_REMOTE_FEATURES_EVT = 5, /*!< feature of remote device indication event */
} esp_avrc_ct_cb_event_t;
/// AVRC metadata attribute mask
typedef enum {
ESP_AVRC_MD_ATTR_TITLE = 0x1, /*!< title of the playing track */
ESP_AVRC_MD_ATTR_ARTIST = 0x2, /*!< track artist */
ESP_AVRC_MD_ATTR_ALBUM = 0x4, /*!< album name */
ESP_AVRC_MD_ATTR_TRACK_NUM = 0x8, /*!< track position on the album */
ESP_AVRC_MD_ATTR_NUM_TRACKS = 0x10, /*!< number of tracks on the album */
ESP_AVRC_MD_ATTR_GENRE = 0x20, /*!< track genre */
ESP_AVRC_MD_ATTR_PLAYING_TIME = 0x40 /*!< total album playing time in miliseconds */
} esp_avrc_md_attr_mask_t;
/// AVRC event notification ids
typedef enum {
ESP_AVRC_RN_PLAY_STATUS_CHANGE = 0x01, /*!< track status change, eg. from playing to paused */
ESP_AVRC_RN_TRACK_CHANGE = 0x02, /*!< new track is loaded */
ESP_AVRC_RN_TRACK_REACHED_END = 0x03, /*!< current track reached end */
ESP_AVRC_RN_TRACK_REACHED_START = 0x04, /*!< current track reached start position */
ESP_AVRC_RN_PLAY_POS_CHANGED = 0x05, /*!< track playing position changed */
ESP_AVRC_RN_BATTERY_STATUS_CHANGE = 0x06, /*!< battery status changed */
ESP_AVRC_RN_SYSTEM_STATUS_CHANGE = 0x07, /*!< system status changed */
ESP_AVRC_RN_APP_SETTING_CHANGE = 0x08, /*!< application settings changed */
ESP_AVRC_RN_MAX_EVT
} esp_avrc_rn_event_ids_t;
/// AVRC player setting ids
typedef enum {
ESP_AVRC_PS_EQUALIZER = 0x01, /*!< equalizer, on or off */
ESP_AVRC_PS_REPEAT_MODE = 0x02, /*!< repeat mode */
ESP_AVRC_PS_SHUFFLE_MODE = 0x03, /*!< shuffle mode */
ESP_AVRC_PS_SCAN_MODE = 0x04, /*!< scan mode on or off */
ESP_AVRC_PS_MAX_ATTR
} esp_avrc_ps_attr_ids_t;
/// AVRC equalizer modes
typedef enum {
ESP_AVRC_PS_EQUALIZER_OFF = 0x1, /*!< equalizer OFF */
ESP_AVRC_PS_EQUALIZER_ON = 0x2 /*!< equalizer ON */
} esp_avrc_ps_eq_value_ids_t;
/// AVRC repeat modes
typedef enum {
ESP_AVRC_PS_REPEAT_OFF = 0x1, /*!< repeat mode off */
ESP_AVRC_PS_REPEAT_SINGLE = 0x2, /*!< single track repeat */
ESP_AVRC_PS_REPEAT_GROUP = 0x3 /*!< group repeat */
} esp_avrc_ps_rpt_value_ids_t;
/// AVRC shuffle modes
typedef enum {
ESP_AVRC_PS_SHUFFLE_OFF = 0x1, /*<! shuffle off */
ESP_AVRC_PS_SHUFFLE_ALL = 0x2, /*<! all trackes shuffle */
ESP_AVRC_PS_SHUFFLE_GROUP = 0x3 /*<! group shuffle */
} esp_avrc_ps_shf_value_ids_t;
/// AVRC scan modes
typedef enum {
ESP_AVRC_PS_SCAN_OFF = 0x1, /*!< scan off */
ESP_AVRC_PS_SCAN_ALL = 0x2, /*!< all tracks scan */
ESP_AVRC_PS_SCAN_GROUP = 0x3 /*!< group scan */
} esp_avrc_ps_scn_value_ids_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 */
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 {
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 */
/**
* @brief ESP_AVRC_CT_METADATA_RSP_EVT
*/
struct avrc_ct_meta_rsp_param {
uint8_t attr_id; /*!< id of metadata attribute */
uint8_t *attr_text; /*!< attribute itself */
int attr_length; /*!< attribute character length */
} meta_rsp; /*!< metadata attributes response */
/**
* @brief ESP_AVRC_CT_CHANGE_NOTIFY_EVT
*/
struct avrc_ct_change_notify_param {
uint8_t event_id; /*!< id of AVRC event notification */
uint32_t event_parameter; /*!< event notification parameter */
} change_ntf; /*!< notifications */
/**
* @brief ESP_AVRC_CT_REMOTE_FEATURES_EVT
*/
struct avrc_ct_rmt_feats_param {
uint32_t feat_mask; /*!< AVRC feature mask of remote device */
esp_bd_addr_t remote_bda; /*!< remote bluetooth device address */
} rmt_feats; /*!< AVRC features discovered from remote SDP server */
} esp_avrc_ct_cb_param_t;
/**
* @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);
/**
* @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
*
* @param[in] callback: AVRCP controller callback function
*
* @return
* - ESP_OK: success
* - 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);
/**
*
* @brief Initialize the bluetooth AVRCP controller module, This function should be called
* after esp_bluedroid_enable() completes successfully
*
* @return
* - ESP_OK: success
* - ESP_INVALID_STATE: if bluetooth stack is not yet enabled
* - ESP_FAIL: others
*
*/
esp_err_t esp_avrc_ct_init(void);
/**
*
* @brief De-initialize AVRCP controller module. This function should be called after
* after esp_bluedroid_enable() completes successfully
*
* @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);
/**
*
* @brief Send player application settings 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] attr_id : player application setting attribute IDs from one of esp_avrc_ps_attr_ids_t
* @param[in] value_id : attribute value defined for the specific player application setting attribute
* @return
* - ESP_OK: success
* - ESP_INVALID_STATE: if bluetooth stack is not yet enabled
* - ESP_FAIL: others
*/
esp_err_t esp_avrc_ct_send_set_player_value_cmd(uint8_t tl, uint8_t attr_id, uint8_t value_id);
/**
* @brief Send register notification 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] event_id : id of events, e.g. ESP_AVRC_RN_PLAY_STATUS_CHANGE, ESP_AVRC_RN_TRACK_CHANGE, etc.
* @param[in] event_parameter : special parameters, eg. playback interval for ESP_AVRC_RN_PLAY_POS_CHANGED
* @return
* - ESP_OK: success
* - ESP_INVALID_STATE: if bluetooth stack is not yet enabled
* - ESP_FAIL: others
*/
esp_err_t esp_avrc_ct_send_register_notification_cmd(uint8_t tl, uint8_t event_id, uint32_t event_parameter);
/**
* @brief Send metadata 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] attr_mask : mask of attributes, e.g. ESP_AVRC_MD_ATTR_ID_TITLE | ESP_AVRC_MD_ATTR_ID_ARTIST.
*
* @return
* - ESP_OK: success
* - ESP_INVALID_STATE: if bluetooth stack is not yet enabled
* - ESP_FAIL: others
*/
esp_err_t esp_avrc_ct_send_metadata_cmd(uint8_t tl, uint8_t attr_mask);
/**
* @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
*
* @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);
#ifdef __cplusplus
}
#endif
#endif /* __ESP_AVRC_API_H__ */