| /* |
| * log functions |
| * Copyright (c) 2003 Michel Bardiaux |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /** |
| * @file |
| * logging functions |
| */ |
| |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include "avutil.h" |
| #include "log.h" |
| |
| #if LIBAVUTIL_VERSION_MAJOR > 50 |
| static |
| #endif |
| int av_log_level = AV_LOG_INFO; |
| static int flags; |
| |
| #if defined(_WIN32) && !defined(__MINGW32CE__) |
| #include <windows.h> |
| static const uint8_t color[] = {12,12,12,14,7,7,7}; |
| static int16_t background, attr_orig; |
| static HANDLE con; |
| #define set_color(x) SetConsoleTextAttribute(con, background | color[x]) |
| #define reset_color() SetConsoleTextAttribute(con, attr_orig) |
| #else |
| static const uint8_t color[]={0x41,0x41,0x11,0x03,9,9,9}; |
| #define set_color(x) fprintf(stderr, "\033[%d;3%dm", color[x]>>4, color[x]&15) |
| #define reset_color() fprintf(stderr, "\033[0m") |
| #endif |
| static int use_color=-1; |
| |
| #undef fprintf |
| static void colored_fputs(int level, const char *str){ |
| if(use_color<0){ |
| #if defined(_WIN32) && !defined(__MINGW32CE__) |
| CONSOLE_SCREEN_BUFFER_INFO con_info; |
| con = GetStdHandle(STD_ERROR_HANDLE); |
| use_color = (con != INVALID_HANDLE_VALUE) && !getenv("NO_COLOR") && !getenv("FFMPEG_FORCE_NOCOLOR"); |
| if (use_color) { |
| GetConsoleScreenBufferInfo(con, &con_info); |
| attr_orig = con_info.wAttributes; |
| background = attr_orig & 0xF0; |
| } |
| #elif HAVE_ISATTY |
| use_color= !getenv("NO_COLOR") && !getenv("FFMPEG_FORCE_NOCOLOR") && |
| (getenv("TERM") && isatty(2) || getenv("FFMPEG_FORCE_COLOR")); |
| #else |
| use_color= getenv("FFMPEG_FORCE_COLOR") && !getenv("NO_COLOR") && !getenv("FFMPEG_FORCE_NOCOLOR"); |
| #endif |
| } |
| |
| if(use_color){ |
| set_color(level); |
| } |
| fputs(str, stderr); |
| if(use_color){ |
| reset_color(); |
| } |
| } |
| |
| const char* av_default_item_name(void* ptr){ |
| return (*(AVClass**)ptr)->class_name; |
| } |
| |
| static void sanitize(uint8_t *line){ |
| while(*line){ |
| if(*line < 0x08 || (*line > 0x0D && *line < 0x20)) |
| *line='?'; |
| line++; |
| } |
| } |
| |
| void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl) |
| { |
| static int print_prefix=1; |
| static int count; |
| static char prev[1024]; |
| char line[1024]; |
| static int is_atty; |
| AVClass* avc= ptr ? *(AVClass**)ptr : NULL; |
| if(level>av_log_level) |
| return; |
| line[0]=0; |
| #undef fprintf |
| if(print_prefix && avc) { |
| if(avc->version >= (50<<16 | 15<<8 | 3) && avc->parent_log_context_offset){ |
| AVClass** parent= *(AVClass***)(((uint8_t*)ptr) + avc->parent_log_context_offset); |
| if(parent && *parent){ |
| snprintf(line, sizeof(line), "[%s @ %p] ", (*parent)->item_name(parent), parent); |
| } |
| } |
| snprintf(line + strlen(line), sizeof(line) - strlen(line), "[%s @ %p] ", avc->item_name(ptr), ptr); |
| } |
| |
| vsnprintf(line + strlen(line), sizeof(line) - strlen(line), fmt, vl); |
| |
| print_prefix = strlen(line) && line[strlen(line)-1] == '\n'; |
| |
| #if HAVE_ISATTY |
| if(!is_atty) is_atty= isatty(2) ? 1 : -1; |
| #endif |
| |
| if(print_prefix && (flags & AV_LOG_SKIP_REPEATED) && !strcmp(line, prev)){ |
| count++; |
| if(is_atty==1) |
| fprintf(stderr, " Last message repeated %d times\r", count); |
| return; |
| } |
| if(count>0){ |
| fprintf(stderr, " Last message repeated %d times\n", count); |
| count=0; |
| } |
| strcpy(prev, line); |
| sanitize(line); |
| colored_fputs(av_clip(level>>3, 0, 6), line); |
| } |
| |
| static void (*av_log_callback)(void*, int, const char*, va_list) = av_log_default_callback; |
| |
| void av_log(void* avcl, int level, const char *fmt, ...) |
| { |
| AVClass* avc= avcl ? *(AVClass**)avcl : NULL; |
| va_list vl; |
| va_start(vl, fmt); |
| if(avc && avc->version >= (50<<16 | 15<<8 | 2) && avc->log_level_offset_offset && level>=AV_LOG_FATAL) |
| level += *(int*)(((uint8_t*)avcl) + avc->log_level_offset_offset); |
| av_vlog(avcl, level, fmt, vl); |
| va_end(vl); |
| } |
| |
| void av_vlog(void* avcl, int level, const char *fmt, va_list vl) |
| { |
| av_log_callback(avcl, level, fmt, vl); |
| } |
| |
| int av_log_get_level(void) |
| { |
| return av_log_level; |
| } |
| |
| void av_log_set_level(int level) |
| { |
| av_log_level = level; |
| } |
| |
| void av_log_set_flags(int arg) |
| { |
| flags= arg; |
| } |
| |
| void av_log_set_callback(void (*callback)(void*, int, const char*, va_list)) |
| { |
| av_log_callback = callback; |
| } |