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
24 * logging functions
25 */
26
27#include <unistd.h>
28#include <stdlib.h>
29#include "avutil.h"
30#include "log.h"
31
32#if LIBAVUTIL_VERSION_MAJOR > 50
33static
34#endif
35int av_log_level = AV_LOG_INFO;
36
37static int use_ansi_color=-1;
38
39#undef fprintf
40static void colored_fputs(int color, const char *str){
41    if(use_ansi_color<0){
42#if HAVE_ISATTY && !defined(_WIN32)
43        use_ansi_color= getenv("TERM") && !getenv("NO_COLOR") && isatty(2);
44#else
45        use_ansi_color= 0;
46#endif
47    }
48
49    if(use_ansi_color){
50        fprintf(stderr, "\033[%d;3%dm", color>>4, color&15);
51    }
52    fputs(str, stderr);
53    if(use_ansi_color){
54        fprintf(stderr, "\033[0m");
55    }
56}
57
58void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl)
59{
60    static int print_prefix=1;
61    static int count;
62    static char line[1024], prev[1024];
63    static const uint8_t color[]={0x41,0x41,0x11,0x03,9,9,9};
64    AVClass* avc= ptr ? *(AVClass**)ptr : NULL;
65    if(level>av_log_level)
66        return;
67#undef fprintf
68    if(print_prefix && avc) {
69        snprintf(line, sizeof(line), "[%s @ %p]", avc->item_name(ptr), ptr);
70    }else
71        line[0]=0;
72
73    vsnprintf(line + strlen(line), sizeof(line) - strlen(line), fmt, vl);
74
75    print_prefix= line[strlen(line)-1] == '\n';
76    if(print_prefix && !strcmp(line, prev)){
77        count++;
78        return;
79    }
80    if(count>0){
81        fprintf(stderr, "    Last message repeated %d times\n", count);
82        count=0;
83    }
84    colored_fputs(color[av_clip(level>>3, 0, 6)], line);
85    strcpy(prev, line);
86}
87
88static void (*av_log_callback)(void*, int, const char*, va_list) = av_log_default_callback;
89
90void av_log(void* avcl, int level, const char *fmt, ...)
91{
92    va_list vl;
93    va_start(vl, fmt);
94    av_vlog(avcl, level, fmt, vl);
95    va_end(vl);
96}
97
98void av_vlog(void* avcl, int level, const char *fmt, va_list vl)
99{
100    av_log_callback(avcl, level, fmt, vl);
101}
102
103int av_log_get_level(void)
104{
105    return av_log_level;
106}
107
108void av_log_set_level(int level)
109{
110    av_log_level = level;
111}
112
113void av_log_set_callback(void (*callback)(void*, int, const char*, va_list))
114{
115    av_log_callback = callback;
116}
117