nengel@2: /*
nengel@2:  * log functions
nengel@2:  * Copyright (c) 2003 Michel Bardiaux
nengel@2:  *
nengel@2:  * This file is part of FFmpeg.
nengel@2:  *
nengel@2:  * FFmpeg is free software; you can redistribute it and/or
nengel@2:  * modify it under the terms of the GNU Lesser General Public
nengel@2:  * License as published by the Free Software Foundation; either
nengel@2:  * version 2.1 of the License, or (at your option) any later version.
nengel@2:  *
nengel@2:  * FFmpeg is distributed in the hope that it will be useful,
nengel@2:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
nengel@2:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
nengel@2:  * Lesser General Public License for more details.
nengel@2:  *
nengel@2:  * You should have received a copy of the GNU Lesser General Public
nengel@2:  * License along with FFmpeg; if not, write to the Free Software
nengel@2:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
nengel@2:  */
nengel@2: 
nengel@2: /**
nengel@2:  * @file
nengel@2:  * logging functions
nengel@2:  */
nengel@2: #include "error.h"
nengel@2: #include <unistd.h>
nengel@2: #include <stdlib.h>
nengel@2: #include "log.h"
nengel@2: 
nengel@2: 
nengel@2: static int av_log_level = AV_LOG_INFO;
nengel@2: 
nengel@2: static int use_ansi_color=-1;
nengel@2: 
nengel@2: #undef fprintf
nengel@2: static void colored_fputs(int color, const char *str){
nengel@2:     if(use_ansi_color<0){
nengel@2: #if HAVE_ISATTY && !defined(_WIN32)
nengel@2:         use_ansi_color= getenv("TERM") && !getenv("NO_COLOR") && isatty(2);
nengel@2: #else
nengel@2:         use_ansi_color= 0;
nengel@2: #endif
nengel@2:     }
nengel@2: 
nengel@2:     if(use_ansi_color){
nengel@2:         fprintf(stderr, "\033[%d;3%dm", color>>4, color&15);
nengel@2:     }
nengel@2:     fputs(str, stderr);
nengel@2:     if(use_ansi_color){
nengel@2:         fprintf(stderr, "\033[0m");
nengel@2:     }
nengel@2: }
nengel@2: 
nengel@2: void av_log_default_callback(int level, const char* fmt, va_list vl)
nengel@2: {
nengel@2:     static int print_prefix=1;
nengel@2:     static int count;
nengel@2:     static char line[1024], prev[1024];
nengel@2:     static const uint8_t color[]={0x41,0x41,0x11,0x03,9,9,9};
nengel@2: 
nengel@2:     if(level>av_log_level)
nengel@2:         return;
nengel@2: #undef fprintf
nengel@2: 
nengel@2:     line[0]=0;
nengel@2: 
nengel@2:     vsnprintf(line + strlen(line), sizeof(line) - strlen(line), fmt, vl);
nengel@2: 
nengel@2:     print_prefix= line[strlen(line)-1] == '\n';
nengel@2:     if(print_prefix && !strcmp(line, prev)){
nengel@2:         count++;
nengel@2:         return;
nengel@2:     }
nengel@2:     if(count>0){
nengel@2:         fprintf(stderr, "    Last message repeated %d times\n", count);
nengel@2:         count=0;
nengel@2:     }
nengel@2:     colored_fputs(color[av_clip(level>>3, 0, 6)], line);
nengel@2:     strcpy(prev, line);
nengel@2: }
nengel@2: 
nengel@2: static void (*av_log_callback)(int, const char*, va_list) = av_log_default_callback;
nengel@2: 
nengel@2: void av_log(int level, const char *fmt, ...)
nengel@2: {
nengel@2:     va_list vl;
nengel@2:     va_start(vl, fmt);
nengel@2:     av_vlog(level, fmt, vl);
nengel@2:     va_end(vl);
nengel@2: }
nengel@2: 
nengel@2: void av_vlog(int level, const char *fmt, va_list vl)
nengel@2: {
nengel@2:     av_log_callback(level, fmt, vl);
nengel@2: }
nengel@2: 
nengel@2: int av_log_get_level(void)
nengel@2: {
nengel@2:     return av_log_level;
nengel@2: }
nengel@2: 
nengel@2: void av_log_set_level(int level)
nengel@2: {
nengel@2:     av_log_level = level;
nengel@2: }
nengel@2: 
nengel@2: void av_log_set_callback(void (*callback)(int, const char*, va_list))
nengel@2: {
nengel@2:     av_log_callback = callback;
nengel@2: }