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FFmpeg/libavutil/log.c
Martin Storsjö 63418e374f configure: Check for GetStdHandle in addition to SetConsoleTextAttribute 
SetConsoleTextAttribute used to be unavailable for Windows Store apps,
but is available to them now. But GetStdHandle still is unavailable,
thus make sure to check for both functions before using code that
requires both.

Signed-off-by: Martin Storsjö <martin@martin.st>
2020-01-23 18:30:09 +02:00

438 lines
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/*
* 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"
#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;
static void check_color_terminal(void)
{
#if defined(_WIN32) && HAVE_SETCONSOLETEXTATTRIBUTE && HAVE_GETSTDHANDLE
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) && HAVE_SETCONSOLETEXTATTRIBUTE && HAVE_GETSTDHANDLE
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_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_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 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);
}
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