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ffmpeg / libavutil / log.c @ 0b006599

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1 4b45de0e Luca Abeni
/*
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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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31 411983c1 Axel Holzinger
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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54 0f482cfc Panagiotis Issaris
/**
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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