/*********************************************************************************************************
 *  ------------------------------------------------------------------------------------------------------
 *  file description
 *  ------------------------------------------------------------------------------------------------------
 *         \file  vlog.h
 *         \unit  vlog
 *        \brief  This is a simple log module for C language
 *       \author  Lamdonn
 *      \version  v1.0.0
 *      \license  GPL-2.0
 *    \copyright  Copyright (C) 2023 Lamdonn.
 ********************************************************************************************************/
#ifndef __vlog_H
#define __vlog_H

#include <stdarg.h>

/* vlog buffer size */
#define VLOG_BUFFER_SIZE                (1024)

/* vlog channel */
#define VLOG_CHANNEL_0                  (0x01)
#define VLOG_CHANNEL_1                  (0x02)
#define VLOG_CHANNEL_2                  (0x04)
#define VLOG_CHANNEL_3                  (0x08)
#define VLOG_CHANNEL_4                  (0x10)
#define VLOG_CHANNEL_5                  (0x20)
#define VLOG_CHANNEL_6                  (0x40)
#define VLOG_CHANNEL_7                  (0x80)
#define VLOG_CHANNEL_ALL                (0xFF)

#define VLOG_ENABALE(c)                 vlog_set_channel(vlog_get_channel() | (1 << (c)))
#define VLOG_DISABALE(c)                vlog_set_channel(vlog_get_channel() & ~(1 << (c)))

/* callback function define */
typedef void (*vlog_func_t)(char *buf, int len);

int vlog(char channel, const char *format, ...);
void vlog_set_channel(char channel);
char vlog_get_channel(void);
int vlog_start_offline(const char *filename);
void vlog_stop_offline(void);
void vlog_set_func(vlog_func_t func);

#endif