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