blob: a886844d9b03a92ef31d6e34fffbc58f6baa4586 [file] [log] [blame]
* copyright (c) 2006 Michael Niedermayer <>
* This file is part of FFmpeg.
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#ifndef AVUTIL_LOG_H
#define AVUTIL_LOG_H
#include <stdarg.h>
#include "avutil.h"
* Describes the class of an AVClass context structure. That is an
* arbitrary struct of which the first field is a pointer to an
* AVClass struct (e.g. AVCodecContext, AVFormatContext etc.).
typedef struct AVCLASS AVClass;
struct AVCLASS {
* The name of the class; usually it is the same name as the
* context structure type to which the AVClass is associated.
const char* class_name;
* A pointer to a function which returns the name of a context
* instance \p ctx associated with the class.
const char* (*item_name)(void* ctx);
* a pointer to the first option specified in the class if any or NULL
* @see av_set_default_options()
const struct AVOption *option;
/* av_log API */
#define AV_LOG_QUIET -1
#define AV_LOG_FATAL 0
#define AV_LOG_ERROR 0
#define AV_LOG_WARNING 1
#define AV_LOG_INFO 1
#define AV_LOG_VERBOSE 1
#define AV_LOG_DEBUG 2
#define AV_LOG_QUIET -8
* Something went really wrong and we will crash now.
#define AV_LOG_PANIC 0
* Something went wrong and recovery is not possible.
* For example, no header was found for a format which depends
* on headers or an illegal combination of parameters is used.
#define AV_LOG_FATAL 8
* Something went wrong and cannot losslessly be recovered.
* However, not all future data is affected.
#define AV_LOG_ERROR 16
* Something somehow does not look correct. This may or may not
* lead to problems. An example would be the use of '-vstrict -2'.
#define AV_LOG_WARNING 24
#define AV_LOG_INFO 32
#define AV_LOG_VERBOSE 40
* Stuff which is only useful for libav* developers.
#define AV_LOG_DEBUG 48
extern int av_log_level;
* Sends the specified message to the log if the level is less than or equal
* to the current av_log_level. By default, all logging messages are sent to
* stderr. This behavior can be altered by setting a different av_vlog callback
* function.
* @param avcl A pointer to an arbitrary struct of which the first field is a
* pointer to an AVClass struct.
* @param level The importance level of the message, lower values signifying
* higher importance.
* @param fmt The format string (printf-compatible) that specifies how
* subsequent arguments are converted to output.
* @see av_vlog
#ifdef __GNUC__
void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
void av_log(void*, int level, const char *fmt, ...);
void av_vlog(void*, int level, const char *fmt, va_list);
int av_log_get_level(void);
void av_log_set_level(int);
void av_log_set_callback(void (*)(void*, int, const char*, va_list));
void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl);
#endif /* AVUTIL_LOG_H */