1/*
2 * log functions
3 * Copyright (c) 2003 Michel Bardiaux
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22/**
23 * @file libavutil/log.c
24 * logging functions
25 */
26
27#include "avutil.h"
28#include "log.h"
29
30int av_log_level = AV_LOG_INFO;
31
32void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl)
33{
34    static int print_prefix=1;
35    static int count;
36    static char line[1024], prev[1024];
37    AVClass* avc= ptr ? *(AVClass**)ptr : NULL;
38    if(level>av_log_level)
39        return;
40#undef fprintf
41    if(print_prefix && avc) {
42        snprintf(line, sizeof(line), "[%s @ %p]", avc->item_name(ptr), ptr);
43    }else
44        line[0]=0;
45
46    vsnprintf(line + strlen(line), sizeof(line) - strlen(line), fmt, vl);
47
48    print_prefix= line[strlen(line)-1] == '\n';
49    if(print_prefix && !strcmp(line, prev)){
50        count++;
51        return;
52    }
53    if(count>0){
54        fprintf(stderr, "    Last message repeated %d times\n", count);
55        count=0;
56    }
57    fputs(line, stderr);
58    strcpy(prev, line);
59}
60
61static void (*av_log_callback)(void*, int, const char*, va_list) = av_log_default_callback;
62
63void av_log(void* avcl, int level, const char *fmt, ...)
64{
65    va_list vl;
66    va_start(vl, fmt);
67    av_vlog(avcl, level, fmt, vl);
68    va_end(vl);
69}
70
71void av_vlog(void* avcl, int level, const char *fmt, va_list vl)
72{
73    av_log_callback(avcl, level, fmt, vl);
74}
75
76int av_log_get_level(void)
77{
78    return av_log_level;
79}
80
81void av_log_set_level(int level)
82{
83    av_log_level = level;
84}
85
86void av_log_set_callback(void (*callback)(void*, int, const char*, va_list))
87{
88    av_log_callback = callback;
89}
90