mirror of
https://git.videolan.org/git/ffmpeg.git
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165 lines
4.8 KiB
C
165 lines
4.8 KiB
C
/*
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* log functions
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* Copyright (c) 2003 Michel Bardiaux
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* logging functions
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*/
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#include <unistd.h>
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#include <stdlib.h>
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#include "avutil.h"
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#include "log.h"
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#if LIBAVUTIL_VERSION_MAJOR > 50
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static
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#endif
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int av_log_level = AV_LOG_INFO;
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static int flags;
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#if defined(_WIN32) && !defined(__MINGW32CE__)
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#include <windows.h>
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static const uint8_t color[] = {12,12,12,14,7,7,7};
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static int16_t background, attr_orig;
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static HANDLE con;
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#define set_color(x) SetConsoleTextAttribute(con, background | color[x])
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#define reset_color() SetConsoleTextAttribute(con, attr_orig)
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#else
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static const uint8_t color[]={0x41,0x41,0x11,0x03,9,9,9};
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#define set_color(x) fprintf(stderr, "\033[%d;3%dm", color[x]>>4, color[x]&15)
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#define reset_color() fprintf(stderr, "\033[0m")
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#endif
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static int use_color=-1;
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#undef fprintf
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static void colored_fputs(int level, const char *str){
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if(use_color<0){
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#if defined(_WIN32) && !defined(__MINGW32CE__)
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CONSOLE_SCREEN_BUFFER_INFO con_info;
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con = GetStdHandle(STD_ERROR_HANDLE);
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use_color = (con != INVALID_HANDLE_VALUE) && !getenv("NO_COLOR") && !getenv("FFMPEG_FORCE_NOCOLOR");
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if (use_color) {
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GetConsoleScreenBufferInfo(con, &con_info);
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attr_orig = con_info.wAttributes;
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background = attr_orig & 0xF0;
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}
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#elif HAVE_ISATTY
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use_color= !getenv("NO_COLOR") && !getenv("FFMPEG_FORCE_NOCOLOR") &&
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(getenv("TERM") && isatty(2) || getenv("FFMPEG_FORCE_COLOR"));
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#else
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use_color= getenv("FFMPEG_FORCE_COLOR") && !getenv("NO_COLOR") && !getenv("FFMPEG_FORCE_NOCOLOR");
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#endif
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}
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if(use_color){
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set_color(level);
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}
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fputs(str, stderr);
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if(use_color){
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reset_color();
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}
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}
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const char* av_default_item_name(void* ptr){
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return (*(AVClass**)ptr)->class_name;
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}
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void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl)
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{
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static int print_prefix=1;
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static int count;
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static char line[1024], prev[1024];
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static int is_atty;
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AVClass* avc= ptr ? *(AVClass**)ptr : NULL;
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if(level>av_log_level)
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return;
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line[0]=0;
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#undef fprintf
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if(print_prefix && avc) {
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if(avc->version >= (50<<16 | 15<<8 | 3) && avc->parent_log_context_offset){
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AVClass** parent= *(AVClass***)(((uint8_t*)ptr) + avc->parent_log_context_offset);
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if(parent && *parent){
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snprintf(line, sizeof(line), "[%s @ %p] ", (*parent)->item_name(parent), parent);
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}
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}
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snprintf(line + strlen(line), sizeof(line) - strlen(line), "[%s @ %p] ", avc->item_name(ptr), ptr);
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}
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vsnprintf(line + strlen(line), sizeof(line) - strlen(line), fmt, vl);
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print_prefix= line[strlen(line)-1] == '\n';
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#if HAVE_ISATTY
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if(!is_atty) is_atty= isatty(2) ? 1 : -1;
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#endif
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if(print_prefix && (flags & AV_LOG_SKIP_REPEATED) && !strcmp(line, prev)){
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count++;
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if(is_atty==1)
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fprintf(stderr, " Last message repeated %d times\r", count);
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return;
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}
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if(count>0){
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fprintf(stderr, " Last message repeated %d times\n", count);
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count=0;
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}
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colored_fputs(av_clip(level>>3, 0, 6), line);
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strcpy(prev, line);
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}
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static void (*av_log_callback)(void*, int, const char*, va_list) = av_log_default_callback;
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void av_log(void* avcl, int level, const char *fmt, ...)
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{
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AVClass* avc= avcl ? *(AVClass**)avcl : NULL;
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va_list vl;
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va_start(vl, fmt);
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if(avc && avc->version >= (50<<16 | 15<<8 | 2) && avc->log_level_offset_offset && level>=AV_LOG_FATAL)
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level += *(int*)(((uint8_t*)avcl) + avc->log_level_offset_offset);
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av_vlog(avcl, level, fmt, vl);
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va_end(vl);
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}
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void av_vlog(void* avcl, int level, const char *fmt, va_list vl)
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{
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av_log_callback(avcl, level, fmt, vl);
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}
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int av_log_get_level(void)
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{
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return av_log_level;
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}
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void av_log_set_level(int level)
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{
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av_log_level = level;
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}
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void av_log_set_flags(int arg)
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{
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flags= arg;
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}
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void av_log_set_callback(void (*callback)(void*, int, const char*, va_list))
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{
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av_log_callback = callback;
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}
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