mlt_log.h

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#ifndef MLT_LOG_H
#define MLT_LOG_H
 
#include "mlt_export.h"
#include <stdarg.h>
#include <stdint.h>
 
#define MLT_LOG_QUIET -8
 
#define MLT_LOG_PANIC 0
 
#define MLT_LOG_FATAL 8
 
#define MLT_LOG_ERROR 16
 
#define MLT_LOG_WARNING 24
 
#define MLT_LOG_INFO 32
#define MLT_LOG_VERBOSE 40
#define MLT_LOG_TIMINGS 44
 
#define MLT_LOG_DEBUG 48
 
#ifdef __GNUC__
MLT_EXPORT void mlt_log(void *service, int level, const char *fmt, ...)
    __attribute__((__format__(__printf__, 3, 4)));
#else
MLT_EXPORT void mlt_log(void *service, int level, const char *fmt, ...);
#endif
 
#ifdef _MSC_VER
 
#define MLT_LOG_EXPAND_ARGS(...) , ##__VA_ARGS__
 
#define mlt_log_panic(service, format, ...) \
    mlt_log((service), MLT_LOG_PANIC, format MLT_LOG_EXPAND_ARGS(__VA_ARGS__))
#define mlt_log_fatal(service, format, ...) \
    mlt_log((service), MLT_LOG_FATAL, format MLT_LOG_EXPAND_ARGS(__VA_ARGS__))
#define mlt_log_error(service, format, ...) \
    mlt_log((service), MLT_LOG_ERROR, format MLT_LOG_EXPAND_ARGS(__VA_ARGS__))
#define mlt_log_warning(service, format, ...) \
    mlt_log((service), MLT_LOG_WARNING, format MLT_LOG_EXPAND_ARGS(__VA_ARGS__))
#define mlt_log_info(service, format, ...) \
    mlt_log((service), MLT_LOG_INFO, format MLT_LOG_EXPAND_ARGS(__VA_ARGS__))
#define mlt_log_verbose(service, format, ...) \
    mlt_log((service), MLT_LOG_VERBOSE, format MLT_LOG_EXPAND_ARGS(__VA_ARGS__))
#define mlt_log_timings(service, format, ...) \
    mlt_log((service), MLT_LOG_TIMINGS, format MLT_LOG_EXPAND_ARGS(__VA_ARGS__))
#define mlt_log_debug(service, format, ...) \
    mlt_log((service), MLT_LOG_DEBUG, format MLT_LOG_EXPAND_ARGS(__VA_ARGS__))
 
#else
 
#define mlt_log_panic(service, format, args...) mlt_log((service), MLT_LOG_PANIC, (format), ##args)
#define mlt_log_fatal(service, format, args...) mlt_log((service), MLT_LOG_FATAL, (format), ##args)
#define mlt_log_error(service, format, args...) mlt_log((service), MLT_LOG_ERROR, (format), ##args)
#define mlt_log_warning(service, format, args...) \
    mlt_log((service), MLT_LOG_WARNING, (format), ##args)
#define mlt_log_info(service, format, args...) mlt_log((service), MLT_LOG_INFO, (format), ##args)
#define mlt_log_verbose(service, format, args...) \
    mlt_log((service), MLT_LOG_VERBOSE, (format), ##args)
#define mlt_log_timings(service, format, args...) \
    mlt_log((service), MLT_LOG_TIMINGS, (format), ##args)
#define mlt_log_debug(service, format, args...) mlt_log((service), MLT_LOG_DEBUG, (format), ##args)
 
#endif
 
MLT_EXPORT void mlt_vlog(void *service, int level, const char *fmt, va_list);
MLT_EXPORT int mlt_log_get_level(void);
MLT_EXPORT void mlt_log_set_level(int);
MLT_EXPORT void mlt_log_set_callback(void (*)(void *, int, const char *, va_list));
 
#define mlt_log_timings_begin() \
    { \
        int64_t _mlt_log_timings_begin = mlt_log_timings_now(), _mlt_log_timings_end;
 
#define mlt_log_timings_end(service, msg) \
    _mlt_log_timings_end = mlt_log_timings_now(); \
    mlt_log_timings(service, \
                    "%s:%d: T(%s)=%" PRId64 " us\n", \
                    __FILE__, \
                    __LINE__, \
                    msg, \
                    _mlt_log_timings_end - _mlt_log_timings_begin); \
    }
 
MLT_EXPORT int64_t mlt_log_timings_now(void);
 
#endif /* MLT_LOG_H */