PeerStreamer

/*

 * log functions

 * Copyright (c) 2003 Michel Bardiaux

 *

 * 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

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * 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

 */

/**

 * @file libavutil/log.c

 * logging functions

 */

#include "avutil.h"

#include "log.h"

int av_log_level = AV_LOG_INFO;

void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl)

{

    static int print_prefix=1;

    static int count;

    static char line[1024], prev[1024];

    AVClass* avc= ptr ? *(AVClass**)ptr : NULL;

    if(level>av_log_level)

        return;

#undef fprintf

    if(print_prefix && avc) {

        snprintf(line, sizeof(line), "[%s @ %p]", avc->item_name(ptr), ptr);

    }else

        line[0]=0;

    vsnprintf(line + strlen(line), sizeof(line) - strlen(line), fmt, vl);

    print_prefix= line[strlen(line)-1] == '\n';

    if(print_prefix && !strcmp(line, prev)){

        count++;

        return;

    }

    if(count>0){

        fprintf(stderr, "    Last message repeated %d times\n", count);

        count=0;

    }

    fputs(line, stderr);

    strcpy(prev, line);

}

static void (*av_log_callback)(void*, int, const char*, va_list) = av_log_default_callback;

void av_log(void* avcl, int level, const char *fmt, ...)

{

    va_list vl;

    va_start(vl, fmt);

    av_vlog(avcl, level, fmt, vl);

    va_end(vl);

}

void av_vlog(void* avcl, int level, const char *fmt, va_list vl)

{

    av_log_callback(avcl, level, fmt, vl);

}

int av_log_get_level(void)

{

    return av_log_level;

}

void av_log_set_level(int level)

{

    av_log_level = level;

}

void av_log_set_callback(void (*callback)(void*, int, const char*, va_list))

{

    av_log_callback = callback;

}