m_coms_ble_atvv_srv.h

/*$$$LICENCE_NORDIC_STANDARD<2016>$$$*/

#ifndef BLE_ATVV_H__
#define BLE_ATVV_H__

#include <stdint.h>
#include <stdbool.h>

#include "sdk_config.h"
#include "ble.h"
#include "ble_srv_common.h"
#include "nrf_sdh_ble.h"
#include "resources.h"

#ifdef __cplusplus
extern "C" {
#endif

#define ATVV_BLE_OBSERVER_PRIO BLE_OBSERVER_PRIORITY_LOW

#define BLE_ATVV_DEF(_name) \
static ble_atvv_t _name; \
NRF_SDH_BLE_OBSERVER(_name ## _obs, \
 ATVV_BLE_OBSERVER_PRIO, \
 ble_atvv_on_ble_evt, &_name)

#if PM_BLE_OBSERVER_PRIO >= ATVV_BLE_OBSERVER_PRIO
#error Peer Manager should have higher observer priority than ATVV
// PM is needed to reapply sys_attr when connecting to bonded peer
#endif

#define BLE_UUID_ATV_BASE {{0x64, 0xB6, 0x17, 0xF6, \
 0x01, 0xAF, 0x7D, 0xBC, \
 0x05, 0x4F, 0x21, 0x5A, \
 0x00, 0x00, 0x5E, 0xAB}} 
#define BLE_UUID_ATV_SERVICE 0x0001 
#define BLE_UUID_ATV_TX_CHARACTERISTIC 0x0002 
#define BLE_UUID_ATV_RX_CHARACTERISTIC 0x0003 
#define BLE_UUID_ATV_CTL_CHARACTERISTIC 0x0004 
#define BLE_ATVV_CHAR_TX_LEN 20
#define BLE_ATVV_CHAR_CTL_LEN 20

#define OPCODE_LENGTH 1
#define HANDLE_LENGTH 2

#if defined(NRF_SDH_BLE_GATT_MAX_MTU_SIZE) && (NRF_SDH_BLE_GATT_MAX_MTU_SIZE != 0)
 #define BLE_ATVV_MAX_DATA_LEN (NRF_SDH_BLE_GATT_MAX_MTU_SIZE - OPCODE_LENGTH - HANDLE_LENGTH)
#else
 #define BLE_ATVV_MAX_DATA_LEN (BLE_GATT_MTU_SIZE_DEFAULT - OPCODE_LENGTH - HANDLE_LENGTH)
 #warning NRF_SDH_BLE_GATT_MAX_MTU_SIZE is not defined.
#endif

#define ATVV_VERSION_MAJOR 0x00
#define ATVV_VERSION_MINOR 0x05

#define ATVV_CMD_GET_CAPS (0x0A)
#define ATVV_CMD_MIC_OPEN (0x0C)
#define ATVV_CMD_MIC_CLOSE (0x0D)

#define ATVV_CTL_AUDIO_STOP (0x00)
#define ATVV_CTL_AUDIO_START (0x04)
#define ATVV_CTL_START_SEARCH (0x08)
#define ATVV_CTL_AUDIO_SYNC (0x0A)
#define ATVV_CTL_GET_CAPS_RESP (0x0B)
#define ATVV_CTL_MIC_OPEN_ERROR (0x0C)

#define ATVV_ERROR_INVALID_CODEC (0x0F01)
#define ATVV_ERROR_MIC_OPEN_TIMEOUT (0x0F02)
#define ATVV_ERROR_INVALID_STATE (0x0F03)

#define ATVV_CAPS_SUPP_CODEC_ADPCM_8KHZ (0x0001)
#define ATVV_CAPS_SUPP_CODEC_ADPCM_8_KHZ_16KHZ (0x0003)
#define ATVV_CAPS_SUPP_CODEC_ADPCM_OPUS_8KHZ (0x0005)
#define ATVV_CAPS_SUPP_CODEC_ADPCM_OPUS_8KHZ_16KHZ (0x0007)

#define ATVV_CAPS_USED_CODEC_ADPCM_8KHZ (0x0001)
#define ATVV_CAPS_USED_CODEC_ADPCM_16KHZ (0x0002)
#define ATVV_CAPS_USED_CODEC_OPUS (0x0004)

#define ATVV_CAPS_FRAME_SIZE_DEFAULT_134 (0x0086)

#define ATVV_CAPS_CHAR_SIZE_DEFAULT_20 (0x0014)
#define ATVV_CAPS_CHAR_SIZE_MAX (ATVV_CAPS_CHAR_SIZE_DEFAULT_20)

#define ATVV_TIMEOUT_1_MIC_OPEN (1000)
#define ATVV_TIMEOUT_2_STREAMING_DURATION (7000)

typedef enum
{
 BLE_ATVV_EVT_ENABLED, 
 BLE_ATVV_EVT_DISABLED, 
 BLE_ATVV_EVT_MIC_OPEN, 
 BLE_ATVV_EVT_MIC_CLOSE, 
 BLE_ATVV_EVT_GET_CAPS, 
} ble_atvv_evt_type_t;

typedef enum
{
 BLE_ATVV_CTL_AUDIO_STOP = ATVV_CTL_AUDIO_STOP, 
 BLE_ATVV_CTL_AUDIO_START = ATVV_CTL_AUDIO_START, 
 BLE_ATVV_CTL_START_SEARCH = ATVV_CTL_START_SEARCH, 
 BLE_ATVV_CTL_AUDIO_SYNC = ATVV_CTL_AUDIO_SYNC, 
 BLE_ATVV_CTL_GET_CAPS_RESP = ATVV_CTL_GET_CAPS_RESP, 
 BLE_ATVV_CTL_MIC_OPEN_ERROR = ATVV_CTL_MIC_OPEN_ERROR,
} ble_atvv_ctl_type_t;

typedef enum
{
 BLE_ATVV_SUPPORTED_CODECS_ADPCM_8KHZ = ATVV_CAPS_SUPP_CODEC_ADPCM_8KHZ,
 BLE_ATVV_SUPPORTED_CODECS_ADPCM_8KHZ_16KHZ = ATVV_CAPS_SUPP_CODEC_ADPCM_8_KHZ_16KHZ,
 BLE_ATVV_SUPPORTED_CODECS_ADPCM_OPUS_8KHZ = ATVV_CAPS_SUPP_CODEC_ADPCM_OPUS_8KHZ,
 BLE_ATVV_SUPPORTED_CODECS_ADPCM_OPUS_8KHZ_16KHZ = ATVV_CAPS_SUPP_CODEC_ADPCM_OPUS_8KHZ_16KHZ,
} ble_atvv_supported_codecs_t;

typedef enum
{
 BLE_ATVV_USED_CODEC_ADPCM_8KHZ = ATVV_CAPS_USED_CODEC_ADPCM_8KHZ,
 BLE_ATVV_USED_CODEC_ADPCM_16KHZ = ATVV_CAPS_USED_CODEC_ADPCM_16KHZ,
 BLE_ATVV_USED_CODEC_OPUS = ATVV_CAPS_USED_CODEC_OPUS,
} ble_atvv_used_codec_t;

typedef enum
{
 BLE_ATVV_FRAME_SIZE_DEFAULT_134 = ATVV_CAPS_FRAME_SIZE_DEFAULT_134,
} ble_atvv_frame_size_t;

typedef enum
{
 BLE_ATVV_CHAR_SIZE_DEFAULT_20 = ATVV_CAPS_CHAR_SIZE_DEFAULT_20,
} ble_atvv_rx_char_size_t;

typedef enum
{
 BLE_ATVV_ERROR_INVALID_CODEC = ATVV_ERROR_INVALID_CODEC,
 BLE_ATVV_ERROR_MIC_OPEN_TIMEOUT = ATVV_ERROR_MIC_OPEN_TIMEOUT,
 BLE_ATVV_ERROR_INVALID_STATE = ATVV_ERROR_INVALID_STATE,
} ble_atvv_error_code_t;

/* Forward declaration of the ble_atvv_t type. */
typedef struct ble_atvv_s ble_atvv_t;

typedef struct
{
 ble_atvv_used_codec_t codec; 
} ble_atvv_evt_mic_open_t;

typedef struct
{
 uint16_t peer_version; 
 ble_atvv_supported_codecs_t peer_codec_support; 
} ble_atvv_evt_get_caps_t;

typedef struct
{
 ble_atvv_evt_type_t type; 
 ble_atvv_t const * p_atvv; 
 uint16_t conn_handle; 
 union
 {
 ble_atvv_evt_mic_open_t mic_open; 
 ble_atvv_evt_get_caps_t get_caps; 
 } params;
} ble_atvv_evt_t;

typedef void (*ble_atvv_evt_handler_t) (ble_atvv_evt_t const * p_evt);

struct ble_atvv_s
{
 uint8_t uuid_type; 
 uint16_t service_handle; 
 ble_gatts_char_handles_t tx_handles; 
 ble_gatts_char_handles_t rx_handles; 
 ble_gatts_char_handles_t ctl_handles; 
 ble_atvv_evt_handler_t event_handler; 
};


ret_code_t ble_atvv_init(ble_atvv_t * p_atvv, ble_atvv_evt_handler_t p_evt_handler);


void ble_atvv_on_ble_evt(ble_evt_t const * p_ble_evt, void * p_context);

ret_code_t ble_atvv_ctl_send(ble_atvv_t const * p_atvv, uint16_t conn_handle, ble_atvv_ctl_type_t type, void * p_param);

ret_code_t ble_atvv_frame_data_transmit(ble_atvv_t const * p_atvv, uint8_t const * p_frame_data, uint16_t len, uint16_t conn_handle);

#ifdef __cplusplus
}
#endif

#endif // BLE_ATVV_H__