/*
* 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 && 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 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 const char *item_name(
void *obj,
const AVClass *cls)
{
return (cls->item_name ? cls->item_name : av_default_item_name)(obj);
}
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] ",
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_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);
}
