// Copyright 2017 Mobvoi Inc. All Rights Reserved.
// Author: ljliu@mobvoi.com (Lijie Liu)

#ifndef SDK_PIPELINE_MOBVOI_MSG_H_
#define SDK_PIPELINE_MOBVOI_MSG_H_

#ifdef __cplusplus
extern "C" {
#endif

#define SYNC_TAG "MOBV"
//#define MAX_MSG_LEN 128
#define MAX_MSG_LEN 128

//events from host system.
enum {
  EVENT_FROM_HOST_GET_WAKEUP_WORD = 0x81,
  EVENT_FROM_HOST_GET_DOA_DIR     = 0x82,
  EVENT_FROM_HOST_GET_BF_DIR_LIST = 0x83,
  EVENT_FROM_HOST_GET_BF_STATUS   = 0x84,
  EVENT_FROM_HOST_SET_BF_DIR      = 0x85,
  EVENT_FROM_HOST_ENABLE_BF       = 0x86,
  EVENT_FROM_HOST_DISABLE_BF      = 0x87,
  EVENT_FROM_HOST_INIT_DSP        = 0x88,
  EVENT_FROM_HOST_SET_LED         = 0x89,
};

//events to host system.
enum {
    EVENT_TO_HOST_WAKEUP        = 0x01,
    EVENT_TO_HOST_WAKEUP_WORDS  = 0x02,
    EVENT_TO_HOST_DOA_DIR       = 0x03,
    EVENT_TO_HOST_BF_DIR_LIST   = 0x04,
    EVENT_TO_HOST_BF_STATUS     = 0x05,
};

typedef struct {
    unsigned char sync_tag[4];
	unsigned char event;
	unsigned char check_bits:1;
	unsigned char reserved:7;
    unsigned short payload_len;
	unsigned char payload_data[0];
} mob_gs_msg;

// Little-Endian functions
static inline int mob_bytes2int(const char* buf)
{
    return (int)(buf[0] | buf[1] << 8 | buf[2] << 16 | buf[3] << 24);
}
static inline short mob_bytes2short(const char* buf)
{
    return (short)(buf[0] | buf[1] << 8);
}
static inline void mob_int2bytes(int src, char* buf)
{
    buf[0] = src & 0xFF;
    buf[1] = (src >> 8) & 0xFF;
    buf[2] = (src >> 16) & 0xFF;
    buf[3] = (src >> 24) & 0xFF;
}
static inline void mob_short2bytes(short src, char* buf)
{
    buf[0] = src & 0xFF;
    buf[1] = (src >> 8) & 0xFF;
}

#ifdef __cplusplus
}
#endif

#endif  // SDK_PIPELINE_MOBVOI_MSG_H_