/* * 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 <unistd.h> #endif #if HAVE_IO_H #include <io.h> #endif #include <inttypes.h> #include <stdarg.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include "bprint.h" #include "common.h" #include "internal.h" #include "log.h" #include "thread.h" static AVMutex mutex = AV_MUTEX_INITIALIZER; #define LINE_SZ 1024 #if HAVE_VALGRIND_VALGRIND_H #include <valgrind/valgrind.h> /* this is the log level at which valgrind will output a full backtrace */ #define BACKTRACE_LOGLEVEL AV_LOG_ERROR #endif static int av_log_level = AV_LOG_INFO; static int flags; #define NB_LEVELS 8 #if defined(_WIN32) && HAVE_SETCONSOLETEXTATTRIBUTE && HAVE_GETSTDHANDLE #include <windows.h> 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, [AV_LOG_TRACE /8] = 8, [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, [16+AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT ] = 13, [16+AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT ] = 5, [16+AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT ] = 13, [16+AV_CLASS_CATEGORY_DEVICE_AUDIO_INPUT ] = 5, [16+AV_CLASS_CATEGORY_DEVICE_OUTPUT ] = 13, [16+AV_CLASS_CATEGORY_DEVICE_INPUT ] = 5, }; static int16_t background, attr_orig; static HANDLE con; #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, [AV_LOG_TRACE /8] = 34 << 8 | 0x07, [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, [16+AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT ] = 213 << 8 | 0x15, [16+AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT ] = 207 << 8 | 0x05, [16+AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT ] = 213 << 8 | 0x15, [16+AV_CLASS_CATEGORY_DEVICE_AUDIO_INPUT ] = 207 << 8 | 0x05, [16+AV_CLASS_CATEGORY_DEVICE_OUTPUT ] = 213 << 8 | 0x15, [16+AV_CLASS_CATEGORY_DEVICE_INPUT ] = 207 << 8 | 0x05, }; #endif static int use_color = -1; #if defined(_WIN32) && HAVE_SETCONSOLETEXTATTRIBUTE && HAVE_GETSTDHANDLE static void win_console_puts(const char *str) { const uint8_t *q = str; uint16_t line[LINE_SZ]; while (*q) { uint16_t *buf = line; DWORD nb_chars = 0; DWORD written; while (*q && nb_chars < LINE_SZ - 1) { uint32_t ch; uint16_t tmp; GET_UTF8(ch, *q ? *q++ : 0, ch = 0xfffd; goto continue_on_invalid;) continue_on_invalid: PUT_UTF16(ch, tmp, *buf++ = tmp; nb_chars++;) } WriteConsoleW(con, line, nb_chars, &written, NULL); } } #endif static void check_color_terminal(void) { char *term = getenv("TERM"); #if defined(_WIN32) && HAVE_SETCONSOLETEXTATTRIBUTE && HAVE_GETSTDHANDLE CONSOLE_SCREEN_BUFFER_INFO con_info; DWORD dummy; con = GetStdHandle(STD_ERROR_HANDLE); if (con != INVALID_HANDLE_VALUE && !GetConsoleMode(con, &dummy)) con = INVALID_HANDLE_VALUE; if (con != INVALID_HANDLE_VALUE) { GetConsoleScreenBufferInfo(con, &con_info); attr_orig = con_info.wAttributes; background = attr_orig & 0xF0; } #endif if (getenv("AV_LOG_FORCE_NOCOLOR")) { use_color = 0; } else if (getenv("AV_LOG_FORCE_COLOR")) { use_color = 1; } else { #if defined(_WIN32) && HAVE_SETCONSOLETEXTATTRIBUTE && HAVE_GETSTDHANDLE use_color = (con != INVALID_HANDLE_VALUE); #elif HAVE_ISATTY use_color = (term && isatty(2)); #else use_color = 0; #endif } if (getenv("AV_LOG_FORCE_256COLOR") || term && strstr(term, "256color")) use_color *= 256; } static void ansi_fputs(int level, int tint, const char *str, int local_use_color) { if (local_use_color == 1) { fprintf(stderr, "\033[%"PRIu32";3%"PRIu32"m%s\033[0m", (color[level] >> 4) & 15, color[level] & 15, str); } else if (tint && use_color == 256) { fprintf(stderr, "\033[48;5;%"PRIu32"m\033[38;5;%dm%s\033[0m", (color[level] >> 16) & 0xff, tint, str); } else if (local_use_color == 256) { fprintf(stderr, "\033[48;5;%"PRIu32"m\033[38;5;%"PRIu32"m%s\033[0m", (color[level] >> 16) & 0xff, (color[level] >> 8) & 0xff, str); } else fputs(str, stderr); } static void colored_fputs(int level, int tint, const char *str) { int local_use_color; if (!*str) return; if (use_color < 0) check_color_terminal(); if (level == AV_LOG_INFO/8) local_use_color = 0; else local_use_color = use_color; #if defined(_WIN32) && HAVE_SETCONSOLETEXTATTRIBUTE && HAVE_GETSTDHANDLE if (con != INVALID_HANDLE_VALUE) { if (local_use_color) SetConsoleTextAttribute(con, background | color[level]); win_console_puts(str); if (local_use_color) SetConsoleTextAttribute(con, attr_orig); } else { ansi_fputs(level, tint, str, local_use_color); } #else ansi_fputs(level, tint, str, local_use_color); #endif } 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 const char *get_level_str(int level) { switch (level) { case AV_LOG_QUIET: return "quiet"; case AV_LOG_DEBUG: return "debug"; case AV_LOG_TRACE: return "trace"; case AV_LOG_VERBOSE: return "verbose"; case AV_LOG_INFO: return "info"; case AV_LOG_WARNING: return "warning"; case AV_LOG_ERROR: return "error"; case AV_LOG_FATAL: return "fatal"; case AV_LOG_PANIC: return "panic"; default: return ""; } } static void format_line(void *avcl, int level, const char *fmt, va_list vl, AVBPrint part[4], int *print_prefix, int type[2]) { AVClass* avc = avcl ? *(AVClass **) avcl : NULL; av_bprint_init(part+0, 0, AV_BPRINT_SIZE_AUTOMATIC); av_bprint_init(part+1, 0, AV_BPRINT_SIZE_AUTOMATIC); av_bprint_init(part+2, 0, AV_BPRINT_SIZE_AUTOMATIC); av_bprint_init(part+3, 0, 65536); 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 *) avcl) + avc->parent_log_context_offset); if (parent && *parent) { av_bprintf(part+0, "[%s @ %p] ", (*parent)->item_name(parent), parent); if(type) type[0] = get_category(parent); } } av_bprintf(part+1, "[%s @ %p] ", avc->item_name(avcl), avcl); if(type) type[1] = get_category(avcl); } if (*print_prefix && (level > AV_LOG_QUIET) && (flags & AV_LOG_PRINT_LEVEL)) av_bprintf(part+2, "[%s] ", get_level_str(level)); av_vbprintf(part+3, fmt, vl); if(*part[0].str || *part[1].str || *part[2].str || *part[3].str) { char lastc = part[3].len && part[3].len <= part[3].size ? part[3].str[part[3].len - 1] : 0; *print_prefix = lastc == '\n' || lastc == '\r'; } } void av_log_format_line(void *ptr, int level, const char *fmt, va_list vl, char *line, int line_size, int *print_prefix) { av_log_format_line2(ptr, level, fmt, vl, line, line_size, print_prefix); } int av_log_format_line2(void *ptr, int level, const char *fmt, va_list vl, char *line, int line_size, int *print_prefix) { AVBPrint part[4]; int ret; format_line(ptr, level, fmt, vl, part, print_prefix, NULL); ret = snprintf(line, line_size, "%s%s%s%s", part[0].str, part[1].str, part[2].str, part[3].str); av_bprint_finalize(part+3, NULL); return ret; } 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]; AVBPrint part[4]; char line[LINE_SZ]; static int is_atty; int type[2]; unsigned tint = 0; if (level >= 0) { tint = level & 0xff00; level &= 0xff; } if (level > av_log_level) return; ff_mutex_lock(&mutex); format_line(ptr, level, fmt, vl, part, &print_prefix, type); snprintf(line, sizeof(line), "%s%s%s%s", part[0].str, part[1].str, part[2].str, part[3].str); #if HAVE_ISATTY if (!is_atty) is_atty = isatty(2) ? 1 : -1; #endif if (print_prefix && (flags & AV_LOG_SKIP_REPEATED) && !strcmp(line, prev) && *line && line[strlen(line) - 1] != '\r'){ count++; if (is_atty == 1) fprintf(stderr, " Last message repeated %d times\r", count); goto end; } if (count > 0) { fprintf(stderr, " Last message repeated %d times\n", count); count = 0; } strcpy(prev, line); sanitize(part[0].str); colored_fputs(type[0], 0, part[0].str); sanitize(part[1].str); colored_fputs(type[1], 0, part[1].str); sanitize(part[2].str); colored_fputs(av_clip(level >> 3, 0, NB_LEVELS - 1), tint >> 8, part[2].str); sanitize(part[3].str); colored_fputs(av_clip(level >> 3, 0, NB_LEVELS - 1), tint >> 8, part[3].str); #if CONFIG_VALGRIND_BACKTRACE if (level <= BACKTRACE_LOGLEVEL) VALGRIND_PRINTF_BACKTRACE("%s", ""); #endif end: av_bprint_finalize(part+3, NULL); ff_mutex_unlock(&mutex); } 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, ...) { va_list vl; va_start(vl, fmt); av_vlog(avcl, level, fmt, vl); va_end(vl); } void av_log_once(void* avcl, int initial_level, int subsequent_level, int *state, const char *fmt, ...) { va_list vl; va_start(vl, fmt); av_vlog(avcl, *state ? subsequent_level : initial_level, fmt, vl); va_end(vl); *state = 1; } void av_vlog(void* avcl, int level, const char *fmt, va_list vl) { AVClass* avc = avcl ? *(AVClass **) avcl : NULL; void (*log_callback)(void*, int, const char*, va_list) = av_log_callback; 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); if (log_callback) 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; } int av_log_get_flags(void) { return flags; } void av_log_set_callback(void (*callback)(void*, int, const char*, va_list)) { av_log_callback = callback; } static void missing_feature_sample(int sample, void *avc, const char *msg, va_list argument_list) { av_vlog(avc, AV_LOG_WARNING, msg, argument_list); av_log(avc, AV_LOG_WARNING, " is not implemented. Update your FFmpeg " "version to the newest one from Git. If the problem still " "occurs, it means that your file has a feature which has not " "been implemented.\n"); if (sample) av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample " "of this file to https://streams.videolan.org/upload/ " "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n"); } void avpriv_request_sample(void *avc, const char *msg, ...) { va_list argument_list; va_start(argument_list, msg); missing_feature_sample(1, avc, msg, argument_list); va_end(argument_list); } void avpriv_report_missing_feature(void *avc, const char *msg, ...) { va_list argument_list; va_start(argument_list, msg); missing_feature_sample(0, avc, msg, argument_list); va_end(argument_list); }