/*
* 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 <stdatomic.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"
#include "fftime.h"
#include "time_internal.h"
static AVMutex mutex = AV_MUTEX_INITIALIZER;
#define LINE_SZ
1024
#if HAVE_VALGRIND_VALGRIND_H && CONFIG_VALGRIND_BACKTRACE
#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 atomic_int av_log_level = AV_LOG_INFO;
static atomic_int av_log_flags =
0 ;
#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_HWDEVICE ] =
6 ,
[
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 |
0 x41,
[AV_LOG_FATAL /
8 ] =
208 <<
8 |
0 x41,
[AV_LOG_ERROR /
8 ] =
196 <<
8 |
0 x11,
[AV_LOG_WARNING/
8 ] =
226 <<
8 |
0 x03,
[AV_LOG_INFO /
8 ] =
253 <<
8 |
0 x09,
[AV_LOG_VERBOSE/
8 ] =
40 <<
8 |
0 x02,
[AV_LOG_DEBUG /
8 ] =
34 <<
8 |
0 x02,
[AV_LOG_TRACE /
8 ] =
34 <<
8 |
0 x07,
[
16 +AV_CLASS_CATEGORY_NA ] =
250 <<
8 |
0 x09,
[
16 +AV_CLASS_CATEGORY_INPUT ] =
219 <<
8 |
0 x15,
[
16 +AV_CLASS_CATEGORY_OUTPUT ] =
201 <<
8 |
0 x05,
[
16 +AV_CLASS_CATEGORY_MUXER ] =
213 <<
8 |
0 x15,
[
16 +AV_CLASS_CATEGORY_DEMUXER ] =
207 <<
8 |
0 x05,
[
16 +AV_CLASS_CATEGORY_ENCODER ] =
51 <<
8 |
0 x16,
[
16 +AV_CLASS_CATEGORY_DECODER ] =
39 <<
8 |
0 x06,
[
16 +AV_CLASS_CATEGORY_FILTER ] =
155 <<
8 |
0 x12,
[
16 +AV_CLASS_CATEGORY_BITSTREAM_FILTER] =
192 <<
8 |
0 x14,
[
16 +AV_CLASS_CATEGORY_SWSCALER ] =
153 <<
8 |
0 x14,
[
16 +AV_CLASS_CATEGORY_SWRESAMPLER ] =
147 <<
8 |
0 x14,
[
16 +AV_CLASS_CATEGORY_HWDEVICE ] =
214 <<
8 |
0 x13,
[
16 +AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT ] =
213 <<
8 |
0 x15,
[
16 +AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT ] =
207 <<
8 |
0 x05,
[
16 +AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT ] =
213 <<
8 |
0 x15,
[
16 +AV_CLASS_CATEGORY_DEVICE_AUDIO_INPUT ] =
207 <<
8 |
0 x05,
[
16 +AV_CLASS_CATEGORY_DEVICE_OUTPUT ] =
213 <<
8 |
0 x15,
[
16 +AV_CLASS_CATEGORY_DEVICE_INPUT ] =
207 <<
8 |
0 x05,
};
#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 =
0 xfffd;
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 &
0 xF0;
}
#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 ) &
0 xff,
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 ) &
0 xff,
(color[level] >>
8 ) &
0 xff,
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 <
0 x08 || (*line >
0 x0D && *line <
0 x20))
*line=
'?' ;
line++;
}
}
static int get_category(
void *ptr){
AVClass *avc = *(AVClass **) ptr;
if ( !avc
|| (avc->version&
0 xFF)<
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 const char *item_name(
void *obj,
const AVClass *cls)
{
return (cls->item_name ? cls->item_name : av_default_item_name)(obj);
}
static void format_date_now(AVBPrint* bp_time,
int include_date)
{
struct tm *ptm, tmbuf;
const int64_t time_us = av_gettime();
const int64_t time_ms = time_us /
1000 ;
const time_t time_s = time_ms /
1000 ;
const int millisec = time_ms - (time_s *
1000 );
ptm = localtime_r(&time_s, &tmbuf);
if (ptm) {
if (include_date)
av_bprint_strftime(bp_time,
"%Y-%m-%d " , ptm);
av_bprint_strftime(bp_time,
"%H:%M:%S" , ptm);
av_bprintf(bp_time,
".%03d " , millisec);
}
}
static void format_line(
void *avcl,
int level,
const char *fmt, va_list vl,
AVBPrint part[
5 ],
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 );
av_bprint_init(part+
4 ,
0 , AV_BPRINT_SIZE_AUTOMATIC);
int flags = atomic_load_explicit(&av_log_flags, memory_order_relaxed);
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] " ,
item_name(parent, *parent), parent);
if (type) type[
0 ] = get_category(parent);
}
}
av_bprintf(part+
1 ,
"[%s @ %p] " ,
item_name(avcl, avc), avcl);
if (type) type[
1 ] = get_category(avcl);
}
if (*print_prefix && (level > AV_LOG_QUIET) && (flags & (AV_LOG_PRINT_TIME | AV_LOG_PRINT_DA
TETIME)))
format_date_now(&part[4 ], flags & AV_LOG_PRINT_DATETIME);
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[5 ];
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[5 ];
char line[LINE_SZ];
static int is_atty;
int type[2 ];
unsigned tint = 0 ;
if (level >= 0 ) {
tint = level & 0 xff00;
level &= 0 xff;
}
if (level > atomic_load_explicit(&av_log_level, memory_order_relaxed))
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 && (atomic_load_explicit(&av_log_flags, memory_order_relaxed) & 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[4 ].str);
colored_fputs(7 , 0 , part[4 ].str);
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 atomic_uintptr_t av_log_callback = (uintptr_t)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) =
(void *)atomic_load_explicit(&av_log_callback, memory_order_relaxed);
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 atomic_load_explicit(&av_log_level, memory_order_relaxed);
}
void av_log_set_level(int level)
{
atomic_store_explicit(&av_log_level, level, memory_order_relaxed);
}
void av_log_set_flags(int arg)
{
atomic_store_explicit(&av_log_flags, arg, memory_order_relaxed);
}
int av_log_get_flags(void )
{
return atomic_load_explicit(&av_log_flags, memory_order_relaxed);
}
void av_log_set_callback(void (*callback)(void *, int , const char *, va_list))
{
atomic_store_explicit(&av_log_callback, (uintptr_t)callback, memory_order_relaxed);
}
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);
}
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