117 lines
3.5 KiB
C
117 lines
3.5 KiB
C
/*
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* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef LOG_H
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#define LOG_H
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#include <stdarg.h>
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/**
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* Used by av_log
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*/
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typedef struct AVCLASS AVClass;
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struct AVCLASS {
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const char* class_name;
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const char* (*item_name)(void*); /* actually passing a pointer to an AVCodecContext
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or AVFormatContext, which begin with an AVClass.
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Needed because av_log is in libavcodec and has no visibility
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of AVIn/OutputFormat */
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const struct AVOption *option;
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};
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/* av_log API */
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#if LIBAVUTIL_VERSION_INT < (50<<16)
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#define AV_LOG_QUIET -1
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#define AV_LOG_FATAL 0
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#define AV_LOG_ERROR 0
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#define AV_LOG_WARNING 1
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#define AV_LOG_INFO 1
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#define AV_LOG_VERBOSE 1
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#define AV_LOG_DEBUG 2
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#else
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#define AV_LOG_QUIET -8
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/**
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* something went really wrong and we will crash now
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*/
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#define AV_LOG_PANIC 0
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/**
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* something went wrong and recovery is not possible
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* like no header in a format which depends on it or a combination
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* of parameters which are not allowed
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*/
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#define AV_LOG_FATAL 8
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/**
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* something went wrong and cannot losslessly be recovered
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* but not all future data is affected
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*/
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#define AV_LOG_ERROR 16
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/**
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* something somehow does not look correct / something which may or may not
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* lead to some problems like use of -vstrict -2
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*/
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#define AV_LOG_WARNING 24
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#define AV_LOG_INFO 32
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#define AV_LOG_VERBOSE 40
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/**
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* stuff which is only useful for libav* developers
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*/
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#define AV_LOG_DEBUG 48
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#endif
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extern int av_log_level;
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/**
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* Send the specified message to the log if the level is less than or equal to
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* the current av_log_level. By default, all logging messages are sent to
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* stderr. This behavior can be altered by setting a different av_vlog callback
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* function.
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*
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* @param avcl A pointer to an arbitrary struct of which the first field is a
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* pointer to an AVClass struct.
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* @param level The importance level of the message, lower values signifying
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* higher importance.
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* @param fmt The format string (printf-compatible) that specifies how
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* subsequent arguments are converted to output.
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* @see av_vlog
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*/
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#ifdef __GNUC__
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extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
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#else
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extern void av_log(void*, int level, const char *fmt, ...);
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#endif
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#if LIBAVUTIL_VERSION_INT < (50<<16)
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extern void av_vlog(void*, int level, const char *fmt, va_list);
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extern int av_log_get_level(void);
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extern void av_log_set_level(int);
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extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));
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extern void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl);
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#else
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extern void (*av_vlog)(void*, int, const char*, va_list);
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#endif
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#endif /* LOG_H */
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