media_proxy.h

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/*
 * Copyright (c) 2019 - 2021 Nordic Semiconductor ASA
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_MEDIA_PROXY_H_
#define ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_MEDIA_PROXY_H_
 
#include <stdbool.h>
#include <zephyr/types.h>
#include <bluetooth/bluetooth.h>
 
/* TODO: Remove dependency on mcs.h */
#include "mcs.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
 
struct mpl_cmd {
        uint8_t  opcode;
        bool  use_param;
        int32_t param;
};
 
struct mpl_cmd_ntf {
        uint8_t requested_opcode;
        uint8_t result_code;
};
 
struct mpl_sci {
        uint8_t len;                     
        uint8_t type;                    
        char    param[SEARCH_PARAM_MAX]; 
};
 
struct mpl_search {
        uint8_t len;
        char    search[SEARCH_LEN_MAX]; /* Concatenated search control items */
};                                      /* - (type, length, param) */
 
#define MEDIA_PROXY_PLAYBACK_SPEED_MIN     -128
#define MEDIA_PROXY_PLAYBACK_SPEED_QUARTER -128
#define MEDIA_PROXY_PLAYBACK_SPEED_HALF     -64
#define MEDIA_PROXY_PLAYBACK_SPEED_UNITY      0
#define MEDIA_PROXY_PLAYBACK_SPEED_DOUBLE    64
#define MEDIA_PROXY_PLAYBACK_SPEED_MAX      127
 
#define MEDIA_PROXY_SEEKING_SPEED_FACTOR_MAX  64
#define MEDIA_PROXY_SEEKING_SPEED_FACTOR_MIN   4
#define MEDIA_PROXY_SEEKING_SPEED_FACTOR_ZERO  0
 
#define MEDIA_PROXY_PLAYING_ORDER_SINGLE_ONCE    0x01
#define MEDIA_PROXY_PLAYING_ORDER_SINGLE_REPEAT  0x02
#define MEDIA_PROXY_PLAYING_ORDER_INORDER_ONCE   0x03
#define MEDIA_PROXY_PLAYING_ORDER_INORDER_REPEAT 0x04
#define MEDIA_PROXY_PLAYING_ORDER_OLDEST_ONCE    0x05
#define MEDIA_PROXY_PLAYING_ORDER_OLDEST_REPEAT  0x06
#define MEDIA_PROXY_PLAYING_ORDER_NEWEST_ONCE    0x07
#define MEDIA_PROXY_PLAYING_ORDER_NEWEST_REPEAT  0x08
#define MEDIA_PROXY_PLAYING_ORDER_SHUFFLE_ONCE   0x09
#define MEDIA_PROXY_PLAYING_ORDER_SHUFFLE_REPEAT 0x0a
 
#define MEDIA_PROXY_PLAYING_ORDERS_SUPPORTED_SINGLE_ONCE    BIT(0)
#define MEDIA_PROXY_PLAYING_ORDERS_SUPPORTED_SINGLE_REPEAT  BIT(1)
#define MEDIA_PROXY_PLAYING_ORDERS_SUPPORTED_INORDER_ONCE   BIT(2)
#define MEDIA_PROXY_PLAYING_ORDERS_SUPPORTED_INORDER_REPEAT BIT(3)
#define MEDIA_PROXY_PLAYING_ORDERS_SUPPORTED_OLDEST_ONCE    BIT(4)
#define MEDIA_PROXY_PLAYING_ORDERS_SUPPORTED_OLDEST_REPEAT  BIT(5)
#define MEDIA_PROXY_PLAYING_ORDERS_SUPPORTED_NEWEST_ONCE    BIT(6)
#define MEDIA_PROXY_PLAYING_ORDERS_SUPPORTED_NEWEST_REPEAT  BIT(7)
#define MEDIA_PROXY_PLAYING_ORDERS_SUPPORTED_SHUFFLE_ONCE   BIT(8)
#define MEDIA_PROXY_PLAYING_ORDERS_SUPPORTED_SHUFFLE_REPEAT BIT(9)
 
#define MEDIA_PROXY_STATE_INACTIVE 0x00
#define MEDIA_PROXY_STATE_PLAYING  0x01
#define MEDIA_PROXY_STATE_PAUSED   0x02
#define MEDIA_PROXY_STATE_SEEKING  0x03
#define MEDIA_PROXY_STATE_LAST     0x04
 
#define MEDIA_PROXY_OP_PLAY          0x01
#define MEDIA_PROXY_OP_PAUSE         0x02
#define MEDIA_PROXY_OP_FAST_REWIND   0x03
#define MEDIA_PROXY_OP_FAST_FORWARD  0x04
#define MEDIA_PROXY_OP_STOP          0x05
 
#define MEDIA_PROXY_OP_MOVE_RELATIVE 0x10
 
#define MEDIA_PROXY_OP_PREV_SEGMENT  0x20
#define MEDIA_PROXY_OP_NEXT_SEGMENT  0x21
#define MEDIA_PROXY_OP_FIRST_SEGMENT 0x22
#define MEDIA_PROXY_OP_LAST_SEGMENT  0x23
#define MEDIA_PROXY_OP_GOTO_SEGMENT  0x24
 
#define MEDIA_PROXY_OP_PREV_TRACK    0x30
#define MEDIA_PROXY_OP_NEXT_TRACK    0x31
#define MEDIA_PROXY_OP_FIRST_TRACK   0x32
#define MEDIA_PROXY_OP_LAST_TRACK    0x33
#define MEDIA_PROXY_OP_GOTO_TRACK    0x34
 
#define MEDIA_PROXY_OP_PREV_GROUP    0x40
#define MEDIA_PROXY_OP_NEXT_GROUP    0x41
#define MEDIA_PROXY_OP_FIRST_GROUP   0x42
#define MEDIA_PROXY_OP_LAST_GROUP    0x43
#define MEDIA_PROXY_OP_GOTO_GROUP    0x44
 
#define MEDIA_PROXY_OPCODES_SUPPORTED_LEN 4
 
#define MEDIA_PROXY_OP_SUP_PLAY          BIT(0)
#define MEDIA_PROXY_OP_SUP_PAUSE         BIT(1)
#define MEDIA_PROXY_OP_SUP_FAST_REWIND   BIT(2)
#define MEDIA_PROXY_OP_SUP_FAST_FORWARD  BIT(3)
#define MEDIA_PROXY_OP_SUP_STOP          BIT(4)
 
#define MEDIA_PROXY_OP_SUP_MOVE_RELATIVE BIT(5)
 
#define MEDIA_PROXY_OP_SUP_PREV_SEGMENT  BIT(6)
#define MEDIA_PROXY_OP_SUP_NEXT_SEGMENT  BIT(7)
#define MEDIA_PROXY_OP_SUP_FIRST_SEGMENT BIT(8)
#define MEDIA_PROXY_OP_SUP_LAST_SEGMENT  BIT(9)
#define MEDIA_PROXY_OP_SUP_GOTO_SEGMENT  BIT(10)
 
#define MEDIA_PROXY_OP_SUP_PREV_TRACK    BIT(11)
#define MEDIA_PROXY_OP_SUP_NEXT_TRACK    BIT(12)
#define MEDIA_PROXY_OP_SUP_FIRST_TRACK   BIT(13)
#define MEDIA_PROXY_OP_SUP_LAST_TRACK    BIT(14)
#define MEDIA_PROXY_OP_SUP_GOTO_TRACK    BIT(15)
 
#define MEDIA_PROXY_OP_SUP_PREV_GROUP    BIT(16)
#define MEDIA_PROXY_OP_SUP_NEXT_GROUP    BIT(17)
#define MEDIA_PROXY_OP_SUP_FIRST_GROUP   BIT(18)
#define MEDIA_PROXY_OP_SUP_LAST_GROUP    BIT(19)
#define MEDIA_PROXY_OP_SUP_GOTO_GROUP    BIT(20)
 
#define MEDIA_PROXY_CMD_SUCCESS             0x01
#define MEDIA_PROXY_CMD_NOT_SUPPORTED       0x02
#define MEDIA_PROXY_CMD_PLAYER_INACTIVE     0x03
#define MEDIA_PROXY_CMD_CANNOT_BE_COMPLETED 0x04
 
#define MEDIA_PROXY_SEARCH_TYPE_TRACK_NAME    0x01
#define MEDIA_PROXY_SEARCH_TYPE_ARTIST_NAME   0x02
#define MEDIA_PROXY_SEARCH_TYPE_ALBUM_NAME    0x03
#define MEDIA_PROXY_SEARCH_TYPE_GROUP_NAME    0x04
#define MEDIA_PROXY_SEARCH_TYPE_EARLIEST_YEAR 0x05
#define MEDIA_PROXY_SEARCH_TYPE_LATEST_YEAR   0x06
#define MEDIA_PROXY_SEARCH_TYPE_GENRE         0x07
#define MEDIA_PROXY_SEARCH_TYPE_ONLY_TRACKS   0x08
#define MEDIA_PROXY_SEARCH_TYPE_ONLY_GROUPS   0x09
 
#define MEDIA_PROXY_SEARCH_SUCCESS  0x01
#define MEDIA_PROXY_SEARCH_FAILURE  0x02
 
 
struct media_player;
 
/* PUBLIC API FOR CONTROLLERS */
 
struct media_proxy_ctrl_cbs {
 
        void (*local_player_instance)(struct media_player *player, int err);
 
        void (*discover_player)(struct media_player *player, int err);
 
        void (*player_name_recv)(struct media_player *player, int err, const char *name);
 
        void (*icon_id_recv)(struct media_player *player, int err, uint64_t id);
 
        void (*icon_url_recv)(struct media_player *player, int err, const char *url);
 
        void (*track_changed_recv)(struct media_player *player, int err);
 
        void (*track_title_recv)(struct media_player *player, int err, const char *title);
 
        void (*track_duration_recv)(struct media_player *player, int err, int32_t duration);
 
        void (*track_position_recv)(struct media_player *player, int err, int32_t position);
 
        void (*track_position_write)(struct media_player *player, int err, int32_t position);
 
        void (*playback_speed_recv)(struct media_player *player, int err, int8_t speed);
 
        void (*playback_speed_write)(struct media_player *player, int err, int8_t speed);
 
        void (*seeking_speed_recv)(struct media_player *player, int err, int8_t speed);
 
        void (*track_segments_id_recv)(struct media_player *player, int err, uint64_t id);
 
        void (*current_track_id_recv)(struct media_player *player, int err, uint64_t id);
 
        void (*current_track_id_write)(struct media_player *player, int err, uint64_t id);
 
        void (*next_track_id_recv)(struct media_player *player, int err, uint64_t id);
 
        void (*next_track_id_write)(struct media_player *player, int err, uint64_t id);
 
        void (*parent_group_id_recv)(struct media_player *player, int err, uint64_t id);
 
        void (*current_group_id_recv)(struct media_player *player, int err, uint64_t id);
 
        void (*current_group_id_write)(struct media_player *player, int err, uint64_t id);
 
        void (*playing_order_recv)(struct media_player *player, int err, uint8_t order);
 
        void (*playing_order_write)(struct media_player *player, int err, uint8_t order);
 
        void (*playing_orders_supported_recv)(struct media_player *player, int err,
                                              uint16_t orders);
 
        void (*media_state_recv)(struct media_player *player, int err, uint8_t state);
 
        void (*command_send)(struct media_player *player, int err, struct mpl_cmd cmd);
 
        void (*command_recv)(struct media_player *player, int err, struct mpl_cmd_ntf result);
 
        void (*commands_supported_recv)(struct media_player *player, int err, uint32_t opcodes);
 
        void (*search_send)(struct media_player *player, int err, struct mpl_search search);
 
        void (*search_recv)(struct media_player *player, int err, uint8_t result_code);
 
        void (*search_results_id_recv)(struct media_player *player, int err, uint64_t id);
 
        void (*content_ctrl_id_recv)(struct media_player *player, int err, uint8_t ccid);
};
 
int media_proxy_ctrl_register(struct media_proxy_ctrl_cbs *ctrl_cbs);
 
int media_proxy_ctrl_discover_player(struct bt_conn *conn);
 
int media_proxy_ctrl_get_player_name(struct media_player *player);
 
int media_proxy_ctrl_get_icon_id(struct media_player *player);
 
int media_proxy_ctrl_get_icon_url(struct media_player *player);
 
int media_proxy_ctrl_get_track_title(struct media_player *player);
 
int media_proxy_ctrl_get_track_duration(struct media_player *player);
 
int media_proxy_ctrl_get_track_position(struct media_player *player);
 
int media_proxy_ctrl_set_track_position(struct media_player *player, int32_t position);
 
int media_proxy_ctrl_get_playback_speed(struct media_player *player);
 
int media_proxy_ctrl_set_playback_speed(struct media_player *player, int8_t speed);
 
int media_proxy_ctrl_get_seeking_speed(struct media_player *player);
 
int media_proxy_ctrl_get_track_segments_id(struct media_player *player);
 
int media_proxy_ctrl_get_current_track_id(struct media_player *player);
 
int media_proxy_ctrl_set_current_track_id(struct media_player *player, uint64_t id);
 
int media_proxy_ctrl_get_next_track_id(struct media_player *player);
 
int media_proxy_ctrl_set_next_track_id(struct media_player *player, uint64_t id);
 
int media_proxy_ctrl_get_parent_group_id(struct media_player *player);
 
int media_proxy_ctrl_get_current_group_id(struct media_player *player);
 
int media_proxy_ctrl_set_current_group_id(struct media_player *player, uint64_t id);
 
int media_proxy_ctrl_get_playing_order(struct media_player *player);
 
int media_proxy_ctrl_set_playing_order(struct media_player *player, uint8_t order);
 
int media_proxy_ctrl_get_playing_orders_supported(struct media_player *player);
 
int media_proxy_ctrl_get_media_state(struct media_player *player);
 
int media_proxy_ctrl_send_command(struct media_player *player, struct mpl_cmd command);
 
int media_proxy_ctrl_get_commands_supported(struct media_player *player);
 
int media_proxy_ctrl_send_search(struct media_player *player, struct mpl_search search);
 
int media_proxy_ctrl_get_search_results_id(struct media_player *player);
 
uint8_t media_proxy_ctrl_get_content_ctrl_id(struct media_player *player);
 
 
/* PUBLIC API FOR PLAYERS */
 
struct media_proxy_pl_calls {
 
        const char *(*get_player_name)(void);
 
        uint64_t (*get_icon_id)(void);
 
        const char *(*get_icon_url)(void);
 
        const char *(*get_track_title)(void);
 
        int32_t (*get_track_duration)(void);
 
        int32_t (*get_track_position)(void);
 
        void (*set_track_position)(int32_t position);
 
        int8_t (*get_playback_speed)(void);
 
        void (*set_playback_speed)(int8_t speed);
 
        int8_t (*get_seeking_speed)(void);
 
        uint64_t (*get_track_segments_id)(void);
 
        uint64_t (*get_current_track_id)(void);
 
        void (*set_current_track_id)(uint64_t id);
 
        uint64_t (*get_next_track_id)(void);
 
        void (*set_next_track_id)(uint64_t id);
 
        uint64_t (*get_parent_group_id)(void);
 
        uint64_t (*get_current_group_id)(void);
 
        void (*set_current_group_id)(uint64_t id);
 
        uint8_t (*get_playing_order)(void);
 
        void (*set_playing_order)(uint8_t order);
 
        uint16_t (*get_playing_orders_supported)(void);
 
        uint8_t (*get_media_state)(void);
 
        void (*send_command)(struct mpl_cmd command);
 
        uint32_t (*get_commands_supported)(void);
 
        void (*send_search)(struct mpl_search search);
 
        uint64_t (*get_search_results_id)(void);
 
        uint8_t (*get_content_ctrl_id)(void);
};
 
int media_proxy_pl_register(struct media_proxy_pl_calls *pl_calls);
 
/* Initialize player - TODO: Move to player header file */
int media_proxy_pl_init(void);
 
/* TODO: Find best location for this call, and move this one also */
struct bt_ots *bt_mcs_get_ots(void);
 
/* Callbacks from the player to the media proxy */
 
void media_proxy_pl_track_changed_cb(void);
 
void media_proxy_pl_track_title_cb(char *title);
 
void media_proxy_pl_track_duration_cb(int32_t duration);
 
void media_proxy_pl_track_position_cb(int32_t position);
 
void media_proxy_pl_playback_speed_cb(int8_t speed);
 
void media_proxy_pl_seeking_speed_cb(int8_t speed);
 
void media_proxy_pl_current_track_id_cb(uint64_t id);
 
void media_proxy_pl_next_track_id_cb(uint64_t id);
 
void media_proxy_pl_parent_group_id_cb(uint64_t id);
 
void media_proxy_pl_current_group_id_cb(uint64_t id);
 
void media_proxy_pl_playing_order_cb(uint8_t order);
 
void media_proxy_pl_media_state_cb(uint8_t state);
 
void media_proxy_pl_command_cb(struct mpl_cmd_ntf cmd_ntf);
 
void media_proxy_pl_commands_supported_cb(uint32_t opcodes);
 
void media_proxy_pl_search_cb(uint8_t result_code);
 
void media_proxy_pl_search_results_id_cb(uint64_t id);
 
#ifdef __cplusplus
}
#endif
 
#endif /* ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_MEDIA_PROXY_H_ */