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annotate libavutil/log.c @ 2:897f711a7157

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rearrange to work with autoconf
author Nina Engelhardt <nengel@mailbox.tu-berlin.de>
date Tue, 25 Sep 2012 15:55:33 +0200
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nengel@2 1 /*
nengel@2 2 * log functions
nengel@2 3 * Copyright (c) 2003 Michel Bardiaux
nengel@2 4 *
nengel@2 5 * This file is part of FFmpeg.
nengel@2 6 *
nengel@2 7 * FFmpeg is free software; you can redistribute it and/or
nengel@2 8 * modify it under the terms of the GNU Lesser General Public
nengel@2 9 * License as published by the Free Software Foundation; either
nengel@2 10 * version 2.1 of the License, or (at your option) any later version.
nengel@2 11 *
nengel@2 12 * FFmpeg is distributed in the hope that it will be useful,
nengel@2 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
nengel@2 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
nengel@2 15 * Lesser General Public License for more details.
nengel@2 16 *
nengel@2 17 * You should have received a copy of the GNU Lesser General Public
nengel@2 18 * License along with FFmpeg; if not, write to the Free Software
nengel@2 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
nengel@2 20 */
nengel@2 21
nengel@2 22 /**
nengel@2 23 * @file
nengel@2 24 * logging functions
nengel@2 25 */
nengel@2 26 #include "error.h"
nengel@2 27 #include <unistd.h>
nengel@2 28 #include <stdlib.h>
nengel@2 29 #include "log.h"
nengel@2 30
nengel@2 31
nengel@2 32 static int av_log_level = AV_LOG_INFO;
nengel@2 33
nengel@2 34 static int use_ansi_color=-1;
nengel@2 35
nengel@2 36 #undef fprintf
nengel@2 37 static void colored_fputs(int color, const char *str){
nengel@2 38 if(use_ansi_color<0){
nengel@2 39 #if HAVE_ISATTY && !defined(_WIN32)
nengel@2 40 use_ansi_color= getenv("TERM") && !getenv("NO_COLOR") && isatty(2);
nengel@2 41 #else
nengel@2 42 use_ansi_color= 0;
nengel@2 43 #endif
nengel@2 44 }
nengel@2 45
nengel@2 46 if(use_ansi_color){
nengel@2 47 fprintf(stderr, "\033[%d;3%dm", color>>4, color&15);
nengel@2 48 }
nengel@2 49 fputs(str, stderr);
nengel@2 50 if(use_ansi_color){
nengel@2 51 fprintf(stderr, "\033[0m");
nengel@2 52 }
nengel@2 53 }
nengel@2 54
nengel@2 55 void av_log_default_callback(int level, const char* fmt, va_list vl)
nengel@2 56 {
nengel@2 57 static int print_prefix=1;
nengel@2 58 static int count;
nengel@2 59 static char line[1024], prev[1024];
nengel@2 60 static const uint8_t color[]={0x41,0x41,0x11,0x03,9,9,9};
nengel@2 61
nengel@2 62 if(level>av_log_level)
nengel@2 63 return;
nengel@2 64 #undef fprintf
nengel@2 65
nengel@2 66 line[0]=0;
nengel@2 67
nengel@2 68 vsnprintf(line + strlen(line), sizeof(line) - strlen(line), fmt, vl);
nengel@2 69
nengel@2 70 print_prefix= line[strlen(line)-1] == '\n';
nengel@2 71 if(print_prefix && !strcmp(line, prev)){
nengel@2 72 count++;
nengel@2 73 return;
nengel@2 74 }
nengel@2 75 if(count>0){
nengel@2 76 fprintf(stderr, " Last message repeated %d times\n", count);
nengel@2 77 count=0;
nengel@2 78 }
nengel@2 79 colored_fputs(color[av_clip(level>>3, 0, 6)], line);
nengel@2 80 strcpy(prev, line);
nengel@2 81 }
nengel@2 82
nengel@2 83 static void (*av_log_callback)(int, const char*, va_list) = av_log_default_callback;
nengel@2 84
nengel@2 85 void av_log(int level, const char *fmt, ...)
nengel@2 86 {
nengel@2 87 va_list vl;
nengel@2 88 va_start(vl, fmt);
nengel@2 89 av_vlog(level, fmt, vl);
nengel@2 90 va_end(vl);
nengel@2 91 }
nengel@2 92
nengel@2 93 void av_vlog(int level, const char *fmt, va_list vl)
nengel@2 94 {
nengel@2 95 av_log_callback(level, fmt, vl);
nengel@2 96 }
nengel@2 97
nengel@2 98 int av_log_get_level(void)
nengel@2 99 {
nengel@2 100 return av_log_level;
nengel@2 101 }
nengel@2 102
nengel@2 103 void av_log_set_level(int level)
nengel@2 104 {
nengel@2 105 av_log_level = level;
nengel@2 106 }
nengel@2 107
nengel@2 108 void av_log_set_callback(void (*callback)(int, const char*, va_list))
nengel@2 109 {
nengel@2 110 av_log_callback = callback;
nengel@2 111 }