/* * 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 "config.h" #if HAVE_UNISTD_H #include #endif #if HAVE_IO_H #include #endif #include #include "avutil.h" #include "common.h" #include "log.h" #define LINE_SZ 1024 static int av_log_level = AV_LOG_INFO; static int flags; #if HAVE_SETCONSOLETEXTATTRIBUTE #include static const uint8_t color[16 + AV_CLASS_CATEGORY_NB] = { [AV_LOG_PANIC /8] = 12, [AV_LOG_FATAL /8] = 12, [AV_LOG_ERROR /8] = 12, [AV_LOG_WARNING/8] = 14, [AV_LOG_INFO /8] = 7, [AV_LOG_VERBOSE/8] = 10, [AV_LOG_DEBUG /8] = 10, [16+AV_CLASS_CATEGORY_NA ] = 7, [16+AV_CLASS_CATEGORY_INPUT ] = 13, [16+AV_CLASS_CATEGORY_OUTPUT ] = 5, [16+AV_CLASS_CATEGORY_MUXER ] = 13, [16+AV_CLASS_CATEGORY_DEMUXER ] = 5, [16+AV_CLASS_CATEGORY_ENCODER ] = 11, [16+AV_CLASS_CATEGORY_DECODER ] = 3, [16+AV_CLASS_CATEGORY_FILTER ] = 10, [16+AV_CLASS_CATEGORY_BITSTREAM_FILTER] = 9, [16+AV_CLASS_CATEGORY_SWSCALER ] = 7, [16+AV_CLASS_CATEGORY_SWRESAMPLER ] = 7, }; static int16_t background, attr_orig; static HANDLE con; #define set_color(x) SetConsoleTextAttribute(con, background | color[x]) #define set_256color set_color #define reset_color() SetConsoleTextAttribute(con, attr_orig) #else static const uint32_t color[16 + AV_CLASS_CATEGORY_NB] = { [AV_LOG_PANIC /8] = 52 << 16 | 196 << 8 | 0x41, [AV_LOG_FATAL /8] = 208 << 8 | 0x41, [AV_LOG_ERROR /8] = 196 << 8 | 0x11, [AV_LOG_WARNING/8] = 226 << 8 | 0x03, [AV_LOG_INFO /8] = 253 << 8 | 0x09, [AV_LOG_VERBOSE/8] = 40 << 8 | 0x02, [AV_LOG_DEBUG /8] = 34 << 8 | 0x02, [16+AV_CLASS_CATEGORY_NA ] = 250 << 8 | 0x09, [16+AV_CLASS_CATEGORY_INPUT ] = 219 << 8 | 0x15, [16+AV_CLASS_CATEGORY_OUTPUT ] = 201 << 8 | 0x05, [16+AV_CLASS_CATEGORY_MUXER ] = 213 << 8 | 0x15, [16+AV_CLASS_CATEGORY_DEMUXER ] = 207 << 8 | 0x05, [16+AV_CLASS_CATEGORY_ENCODER ] = 51 << 8 | 0x16, [16+AV_CLASS_CATEGORY_DECODER ] = 39 << 8 | 0x06, [16+AV_CLASS_CATEGORY_FILTER ] = 155 << 8 | 0x12, [16+AV_CLASS_CATEGORY_BITSTREAM_FILTER] = 192 << 8 | 0x14, [16+AV_CLASS_CATEGORY_SWSCALER ] = 153 << 8 | 0x14, [16+AV_CLASS_CATEGORY_SWRESAMPLER ] = 147 << 8 | 0x14, }; #define set_color(x) fprintf(stderr, "\033[%d;3%dm", (color[x] >> 4) & 15, color[x] & 15) #define set_256color(x) fprintf(stderr, "\033[48;5;%dm\033[38;5;%dm", (color[x] >> 16) & 0xff, (color[x] >> 8) & 0xff) #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 HAVE_SETCONSOLETEXTATTRIBUTE 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")); if (getenv("AV_LOG_FORCE_256COLOR")) use_color *= 256; #else use_color = getenv("AV_LOG_FORCE_COLOR") && !getenv("NO_COLOR") && !getenv("AV_LOG_FORCE_NOCOLOR"); #endif } if (use_color == 1) { set_color(level); } else if (use_color == 256) set_256color(level); fputs(str, stderr); if (use_color) { reset_color(); } } const char *av_default_item_name(void *ptr) { return (*(AVClass **) ptr)->class_name; } AVClassCategory av_default_get_category(void *ptr) { return (*(AVClass **) ptr)->category; } static void sanitize(uint8_t *line){ while(*line){ if(*line < 0x08 || (*line > 0x0D && *line < 0x20)) *line='?'; line++; } } static int get_category(void *ptr){ AVClass *avc = *(AVClass **) ptr; if( !avc || (avc->version&0xFF)<100 || avc->version < (51 << 16 | 59 << 8) || avc->category >= AV_CLASS_CATEGORY_NB) return AV_CLASS_CATEGORY_NA + 16; if(avc->get_category) return avc->get_category(ptr) + 16; return avc->category + 16; } static void format_line(void *ptr, int level, const char *fmt, va_list vl, char part[3][LINE_SZ], int part_size, int *print_prefix, int type[2]) { AVClass* avc = ptr ? *(AVClass **) ptr : NULL; part[0][0] = part[1][0] = part[2][0] = 0; if(type) type[0] = type[1] = AV_CLASS_CATEGORY_NA + 16; 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(part[0], part_size, "[%s @ %p] ", (*parent)->item_name(parent), parent); if(type) type[0] = get_category(((uint8_t *) ptr) + avc->parent_log_context_offset); } } snprintf(part[1], part_size, "[%s @ %p] ", avc->item_name(ptr), ptr); if(type) type[1] = get_category(ptr); } vsnprintf(part[2], part_size, fmt, vl); *print_prefix = strlen(part[2]) && part[2][strlen(part[2]) - 1] == '\n'; } void av_log_format_line(void *ptr, int level, const char *fmt, va_list vl, char *line, int line_size, int *print_prefix) { char part[3][LINE_SZ]; format_line(ptr, level, fmt, vl, part, sizeof(part[0]), print_prefix, NULL); snprintf(line, line_size, "%s%s%s", part[0], part[1], part[2]); } 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[LINE_SZ]; char part[3][LINE_SZ]; char line[LINE_SZ]; static int is_atty; int type[2]; if (level > av_log_level) return; format_line(ptr, level, fmt, vl, part, sizeof(part[0]), &print_prefix, type); snprintf(line, sizeof(line), "%s%s%s", part[0], part[1], part[2]); #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(part[0]); colored_fputs(type[0], part[0]); sanitize(part[1]); colored_fputs(type[1], part[1]); sanitize(part[2]); colored_fputs(av_clip(level >> 3, 0, 6), part[2]); } 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) { if(av_log_callback) 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; }