mirror of
https://github.com/FFmpeg/FFmpeg.git
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97 lines
2.6 KiB
C
97 lines
2.6 KiB
C
/*
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* log functions
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* Copyright (c) 2003 Michel Bardiaux
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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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/**
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* @file log.c
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* log.
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*/
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#include "avutil.h"
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int av_log_level = AV_LOG_INFO;
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void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl)
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{
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static int print_prefix=1;
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AVClass* avc= ptr ? *(AVClass**)ptr : NULL;
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if(level>av_log_level)
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return;
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#undef fprintf
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if(print_prefix && avc) {
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fprintf(stderr, "[%s @ %p]", avc->item_name(ptr), avc);
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}
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#define fprintf please_use_av_log
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print_prefix= strstr(fmt, "\n") != NULL;
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vfprintf(stderr, fmt, vl);
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}
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#if LIBAVUTIL_VERSION_INT < (50<<16)
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static void (*av_log_callback)(void*, int, const char*, va_list) = av_log_default_callback;
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#else
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void (*av_vlog)(void*, int, const char*, va_list) = av_log_default_callback;
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#endif
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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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void av_log(void* avcl, int level, const char *fmt, ...)
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{
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va_list vl;
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va_start(vl, fmt);
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av_vlog(avcl, level, fmt, vl);
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va_end(vl);
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}
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#if LIBAVUTIL_VERSION_INT < (50<<16)
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void av_vlog(void* avcl, int level, const char *fmt, va_list vl)
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{
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av_log_callback(avcl, level, fmt, vl);
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}
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int av_log_get_level(void)
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{
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return av_log_level;
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}
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void av_log_set_level(int level)
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{
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av_log_level = level;
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}
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void av_log_set_callback(void (*callback)(void*, int, const char*, va_list))
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{
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av_log_callback = callback;
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}
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#endif
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