lv_log.h

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#ifndef LV_LOG_H
#define LV_LOG_H
 
#ifdef __cplusplus
extern "C" {
#endif
 
/*********************
 *      INCLUDES
 *********************/
#include "../lv_conf_internal.h"
#include <stdint.h>
 
#include "lv_types.h"
 
/*********************
 *      DEFINES
 *********************/
 
/*Possible log level. For compatibility declare it independently from `LV_USE_LOG`*/
 
#define LV_LOG_LEVEL_TRACE 0 
#define LV_LOG_LEVEL_INFO  1 
#define LV_LOG_LEVEL_WARN  2 
#define LV_LOG_LEVEL_ERROR 3 
#define LV_LOG_LEVEL_USER  4 
#define LV_LOG_LEVEL_NONE  5 
#define _LV_LOG_LEVEL_NUM  6 
LV_EXPORT_CONST_INT(LV_LOG_LEVEL_TRACE);
LV_EXPORT_CONST_INT(LV_LOG_LEVEL_INFO);
LV_EXPORT_CONST_INT(LV_LOG_LEVEL_WARN);
LV_EXPORT_CONST_INT(LV_LOG_LEVEL_ERROR);
LV_EXPORT_CONST_INT(LV_LOG_LEVEL_USER);
LV_EXPORT_CONST_INT(LV_LOG_LEVEL_NONE);
 
typedef int8_t lv_log_level_t;
 
#if LV_USE_LOG
/**********************
 *      TYPEDEFS
 **********************/
 
typedef void (*lv_log_print_g_cb_t)(const char * buf);
 
/**********************
 * GLOBAL PROTOTYPES
 **********************/
 
void lv_log_register_print_cb(lv_log_print_g_cb_t print_cb);
 
void lv_log(const char * format, ...) LV_FORMAT_ATTRIBUTE(1, 2);
 
void _lv_log_add(lv_log_level_t level, const char * file, int line,
                 const char * func, const char * format, ...) LV_FORMAT_ATTRIBUTE(5, 6);
 
/**********************
 *      MACROS
 **********************/
#ifndef LV_LOG_TRACE
#  if LV_LOG_LEVEL <= LV_LOG_LEVEL_TRACE
#    define LV_LOG_TRACE(...) _lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, __func__, __VA_ARGS__)
#  else
#    define LV_LOG_TRACE(...) do {}while(0)
#  endif
#endif
 
#ifndef LV_LOG_INFO
#  if LV_LOG_LEVEL <= LV_LOG_LEVEL_INFO
#    define LV_LOG_INFO(...) _lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, __func__, __VA_ARGS__)
#  else
#    define LV_LOG_INFO(...) do {}while(0)
#  endif
#endif
 
#ifndef LV_LOG_WARN
#  if LV_LOG_LEVEL <= LV_LOG_LEVEL_WARN
#    define LV_LOG_WARN(...) _lv_log_add(LV_LOG_LEVEL_WARN, __FILE__, __LINE__, __func__, __VA_ARGS__)
#  else
#    define LV_LOG_WARN(...) do {}while(0)
#  endif
#endif
 
#ifndef LV_LOG_ERROR
#  if LV_LOG_LEVEL <= LV_LOG_LEVEL_ERROR
#    define LV_LOG_ERROR(...) _lv_log_add(LV_LOG_LEVEL_ERROR, __FILE__, __LINE__, __func__, __VA_ARGS__)
#  else
#    define LV_LOG_ERROR(...) do {}while(0)
#  endif
#endif
 
#ifndef LV_LOG_USER
#  if LV_LOG_LEVEL <= LV_LOG_LEVEL_USER
#    define LV_LOG_USER(...) _lv_log_add(LV_LOG_LEVEL_USER, __FILE__, __LINE__, __func__, __VA_ARGS__)
#  else
#    define LV_LOG_USER(...) do {}while(0)
#  endif
#endif
 
#ifndef LV_LOG
#  if LV_LOG_LEVEL < LV_LOG_LEVEL_NONE
#    define LV_LOG(...) lv_log(__VA_ARGS__)
#  else
#    define LV_LOG(...) do {} while(0)
#  endif
#endif
 
#else /*LV_USE_LOG*/
 
/*Do nothing if `LV_USE_LOG 0`*/
#define _lv_log_add(level, file, line, ...)
#define LV_LOG_TRACE(...) do {}while(0)
#define LV_LOG_INFO(...) do {}while(0)
#define LV_LOG_WARN(...) do {}while(0)
#define LV_LOG_ERROR(...) do {}while(0)
#define LV_LOG_USER(...) do {}while(0)
#define LV_LOG(...) do {}while(0)
 
#endif /*LV_USE_LOG*/
 
#ifdef __cplusplus
} /*extern "C"*/
#endif
 
#endif /*LV_LOG_H*/