ffmpeg/libavutil/log.c
Michael Niedermayer 51e026d115 Coloring the log with ANSI.
Ive checked this on black and white background and found no problem in terms
of readability.
flames welcome.

Originally committed as revision 22946 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-04-22 18:58:39 +00:00

110 lines
2.7 KiB
C

/*
* 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
* logging functions
*/
#include <unistd.h>
#include "avutil.h"
#include "log.h"
#if LIBAVUTIL_VERSION_MAJOR > 50
static
#endif
int av_log_level = AV_LOG_INFO;
#if !HAVE_ISATTY
#define isatty(s) 0
#endif
#undef fprintf
static void colored_fputs(int color, const char *str){
if(isatty(2)){
fprintf(stderr, "\033[%dm\033[3%dm", color>>4, color&15);
}
fputs(str, stderr);
if(isatty(2)){
fprintf(stderr, "\033[0m");
}
}
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];
static const uint8_t color[]={0x41,0x41,0x11,0x03,9,9,9};
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;
}
colored_fputs(color[av_clip(level>>3, 0, 6)], line);
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;
}