/* * 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" static 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, 10 }; 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, 2 }; #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("AV_LOG_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("AV_LOG_FORCE_NOCOLOR") && (getenv("TERM") && isatty(2) || getenv("AV_LOG_FORCE_COLOR")); #else use_color = getenv("AV_LOG_FORCE_COLOR") && !getenv("NO_COLOR") && !getenv("AV_LOG_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_format_line(void *ptr, int level, const char *fmt, va_list vl, char *line, int line_size, int *print_prefix) { AVClass* avc = ptr ? *(AVClass **) ptr : NULL; line[0] = 0; if (*print_prefix && avc) { if (avc->parent_log_context_offset) { AVClass** parent = *(AVClass ***) (((uint8_t *) ptr) + avc->parent_log_context_offset); if (parent && *parent) { snprintf(line, line_size, "[%s @ %p] ", (*parent)->item_name(parent), parent); } } snprintf(line + strlen(line), line_size - strlen(line), "[%s @ %p] ", avc->item_name(ptr), ptr); } vsnprintf(line + strlen(line), line_size - strlen(line), fmt, vl); *print_prefix = strlen(line) && line[strlen(line) - 1] == '\n'; } 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; if (level > av_log_level) return; av_log_format_line(ptr, level, fmt, vl, line, sizeof(line), &print_prefix); #if HAVE_ISATTY if (!is_atty) is_atty = isatty(2) ? 1 : -1; #endif #undef fprintf 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; }