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