mirror of
https://github.com/espressif/esp-idf.git
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0ad3017df7
1. move btif and A2DP source code from project directory to bluetooth directory; 2. some updates of audio source code;
113 lines
3.0 KiB
C
113 lines
3.0 KiB
C
#ifndef __ESP_A2DP_API_H__
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#define __ESP_A2DP_API_H__
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#include "esp_err.h"
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#include "esp_bt_defs.h"
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/* Media codec types */
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#define ESP_A2D_MCT_SBC (0)
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#define ESP_A2D_MCT_M12 (0x01)
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#define ESP_A2D_MCT_M24 (0x02)
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#define ESP_A2D_MCT_ATRAC (0x04)
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#define ESP_A2D_MCT_NON_A2DP (0xff)
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typedef uint8_t esp_a2d_mct_t;
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/* codec specific information element */
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#define ESP_A2D_CIE_LEN_SBC (4)
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#define ESP_A2D_CIE_LEN_M12 (4)
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#define ESP_A2D_CIE_LEN_M24 (6)
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#define ESP_A2D_CIE_LEN_ATRAC (7)
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typedef struct {
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uint8_t oct[ESP_A2D_CIE_LEN_SBC];
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} esp_a2d_cie_sbc_t;
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typedef struct {
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uint8_t oct[ESP_A2D_CIE_LEN_M12];
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} esp_a2d_cie_m12_t;
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typedef struct {
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uint8_t oct[ESP_A2D_CIE_LEN_M24];
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} esp_a2d_cie_m24_t;
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typedef struct {
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uint8_t oct[ESP_A2D_CIE_LEN_ATRAC];
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} esp_a2d_cie_atrac_t;
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/* media codec capabilities */
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typedef struct {
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esp_a2d_mct_t type; /* A2DP media codec type*/
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union {
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esp_a2d_cie_sbc_t sbc;
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esp_a2d_cie_m12_t m12;
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esp_a2d_cie_m24_t m24;
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esp_a2d_cie_atrac_t atrac;
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} cie;
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} esp_a2d_mcc_t;
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/* Bluetooth A2DP connection states */
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typedef enum {
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ESP_A2D_CONNECTION_STATE_DISCONNECTED = 0,
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ESP_A2D_CONNECTION_STATE_CONNECTING,
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ESP_A2D_CONNECTION_STATE_CONNECTED,
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ESP_A2D_CONNECTION_STATE_DISCONNECTING
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} esp_a2d_connection_state_t;
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/* Bluetooth A2DP datapath states */
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typedef enum {
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ESP_A2D_AUDIO_STATE_REMOTE_SUSPEND = 0,
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ESP_A2D_AUDIO_STATE_STOPPED,
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ESP_A2D_AUDIO_STATE_STARTED,
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} esp_a2d_audio_state_t;
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typedef enum {
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ESP_A2D_CONNECTION_STATE_EVT = 0, /*!< connection state changed */
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ESP_A2D_AUDIO_STATE_EVT = 1, /*!< audio stream state changed */
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ESP_A2D_AUDIO_CFG_EVT = 2 /*!< audio codec configuration received */
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} esp_a2d_cb_event_t;
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typedef union {
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/*< ESP_A2D_CONNECTION_STATE_EVT */
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struct a2d_conn_stat_param {
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esp_a2d_connection_state_t state; /*!< one of values from esp_a2d_connection_state_t */
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esp_bd_addr_t remote_bda;
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} conn_stat;
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/*< ESP_A2D_AUDIO_STATE_EVT */
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struct a2d_audio_stat_param {
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esp_a2d_audio_state_t state; /*!< one of the values from esp_a2d_audio_state_t */
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esp_bd_addr_t remote_bda;
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} audio_stat;
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/*< ESP_A2D_AUDIO_CFG_EVT */
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struct a2d_audio_cfg_param {
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esp_bd_addr_t remote_bda;
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esp_a2d_mcc_t mcc;
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} audio_cfg;
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} esp_a2d_cb_param_t;
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typedef void (* esp_a2d_data_cb_t)(uint8_t *buf, uint32_t len);
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/**
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* NOTE:
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* A2DP data path is handled via below function sets, between the Audio HAL
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* and the Bluetooth stack.
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*/
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/**
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* Represents the A2DP sink interface.
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*/
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esp_err_t esp_a2d_register_callback(esp_profile_cb_t callback);
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esp_err_t esp_a2d_register_data_callback(esp_a2d_data_cb_t cb);
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esp_err_t esp_a2d_sink_init(void);
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esp_err_t esp_a2d_sink_connect(esp_bd_addr_t remote_bda);
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esp_err_t esp_a2d_sink_disconnect(esp_bd_addr_t remote_bda);
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void esp_a2d_sink_deinit(void);
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#endif /* __ESP_A2DP_API_H__ */
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