/* * 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 <stdarg.h>#include <stdlib.h>#include "avutil.h"#include "bprint.h"#include "common.h"#include "internal.h"#include "log.h" #if HAVE_PTHREADS#include <pthread.h>static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;#endif #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) && !defined(__MINGW32CE__) && HAVE_SETCONSOLETEXTATTRIBUTE#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,}; #endifstatic int use_color = -1; static void check_color_terminal(void){#if defined(_WIN32) && !defined(__MINGW32CE__) && 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    char *term = getenv("TERM");    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")        || (term && strstr(term, "256color")))        use_color *= 256;#else    use_color = getenv("AV_LOG_FORCE_COLOR") && !getenv("NO_COLOR") &&               !getenv("AV_LOG_FORCE_NOCOLOR");#endif} 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) && !defined(__MINGW32CE__) && HAVE_SETCONSOLETEXTATTRIBUTE    if (local_use_color)        SetConsoleTextAttribute(con, background | color[level]);    fputs(str, stderr);    if (local_use_color)        SetConsoleTextAttribute(con, attr_orig);#else    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);#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_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, 1);    av_bprint_init(part+1, 0, 1);    av_bprint_init(part+2, 0, 1);    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 (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;#if HAVE_PTHREADS    pthread_mutex_lock(&mutex);#endif     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", "");#endifend:    av_bprint_finalize(part+3, NULL);#if HAVE_PTHREADS    pthread_mutex_unlock(&mutex);#endif} 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){    void (*log_callback)(void*, int, const char*, va_list) = av_log_callback;    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 ftp://upload.ffmpeg.org/incoming/ "               "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);}