mirror of https://git.ffmpeg.org/ffmpeg.git
183 lines
5.1 KiB
C
183 lines
5.1 KiB
C
/*
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* log functions
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* Copyright (c) 2003 Michel Bardiaux
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* logging functions
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*/
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#include <unistd.h>
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#include <stdlib.h>
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#include "avutil.h"
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#include "log.h"
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static int av_log_level = AV_LOG_INFO;
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static int flags;
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#if defined(_WIN32) && !defined(__MINGW32CE__)
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#include <windows.h>
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static const uint8_t color[] = { 12, 12, 12, 14, 7, 7, 7 };
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static int16_t background, attr_orig;
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static HANDLE con;
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#define set_color(x) SetConsoleTextAttribute(con, background | color[x])
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#define reset_color() SetConsoleTextAttribute(con, attr_orig)
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#else
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static const uint8_t color[] = { 0x41, 0x41, 0x11, 0x03, 9, 9, 9 };
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#define set_color(x) fprintf(stderr, "\033[%d;3%dm", color[x] >> 4, color[x]&15)
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#define reset_color() fprintf(stderr, "\033[0m")
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#endif
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static int use_color = -1;
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#undef fprintf
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static void colored_fputs(int level, const char *str)
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{
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if (use_color < 0) {
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#if defined(_WIN32) && !defined(__MINGW32CE__)
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CONSOLE_SCREEN_BUFFER_INFO con_info;
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con = GetStdHandle(STD_ERROR_HANDLE);
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use_color = (con != INVALID_HANDLE_VALUE) && !getenv("NO_COLOR") &&
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!getenv("AV_LOG_FORCE_NOCOLOR");
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if (use_color) {
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GetConsoleScreenBufferInfo(con, &con_info);
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attr_orig = con_info.wAttributes;
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background = attr_orig & 0xF0;
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}
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#elif HAVE_ISATTY
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use_color = !getenv("NO_COLOR") && !getenv("AV_LOG_FORCE_NOCOLOR") &&
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(getenv("TERM") && isatty(2) ||
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getenv("AV_LOG_FORCE_COLOR"));
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#else
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use_color = getenv("AV_LOG_FORCE_COLOR") && !getenv("NO_COLOR") &&
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!getenv("AV_LOG_FORCE_NOCOLOR");
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#endif
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}
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if (use_color) {
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set_color(level);
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}
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fputs(str, stderr);
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if (use_color) {
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reset_color();
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}
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}
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const char *av_default_item_name(void *ptr)
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{
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return (*(AVClass **) ptr)->class_name;
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}
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static void sanitize(uint8_t *line){
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while(*line){
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if(*line < 0x08 || (*line > 0x0D && *line < 0x20))
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*line='?';
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line++;
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}
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}
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void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl)
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{
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static int print_prefix = 1;
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static int count;
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static char prev[1024];
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char line[1024];
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static int is_atty;
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AVClass* avc = ptr ? *(AVClass **) ptr : NULL;
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if (level > av_log_level)
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return;
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line[0] = 0;
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#undef fprintf
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if (print_prefix && avc) {
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if (avc->parent_log_context_offset) {
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AVClass** parent = *(AVClass ***) (((uint8_t *) ptr) +
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avc->parent_log_context_offset);
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if (parent && *parent) {
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snprintf(line, sizeof(line), "[%s @ %p] ",
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(*parent)->item_name(parent), parent);
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}
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}
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snprintf(line + strlen(line), sizeof(line) - strlen(line), "[%s @ %p] ",
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avc->item_name(ptr), ptr);
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}
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vsnprintf(line + strlen(line), sizeof(line) - strlen(line), fmt, vl);
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print_prefix = strlen(line) && line[strlen(line) - 1] == '\n';
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#if HAVE_ISATTY
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if (!is_atty)
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is_atty = isatty(2) ? 1 : -1;
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#endif
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if (print_prefix && (flags & AV_LOG_SKIP_REPEATED) && !strcmp(line, prev)){
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count++;
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if (is_atty == 1)
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fprintf(stderr, " Last message repeated %d times\r", count);
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return;
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}
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if (count > 0) {
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fprintf(stderr, " Last message repeated %d times\n", count);
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count = 0;
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}
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strcpy(prev, line);
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sanitize(line);
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colored_fputs(av_clip(level >> 3, 0, 6), line);
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}
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static void (*av_log_callback)(void*, int, const char*, va_list) =
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av_log_default_callback;
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void av_log(void* avcl, int level, const char *fmt, ...)
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{
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AVClass* avc = avcl ? *(AVClass **) avcl : NULL;
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va_list vl;
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va_start(vl, fmt);
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if (avc && avc->version >= (50 << 16 | 15 << 8 | 2) &&
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avc->log_level_offset_offset && level >= AV_LOG_FATAL)
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level += *(int *) (((uint8_t *) avcl) + avc->log_level_offset_offset);
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av_vlog(avcl, level, fmt, vl);
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va_end(vl);
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}
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void av_vlog(void* avcl, int level, const char *fmt, va_list vl)
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{
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av_log_callback(avcl, level, fmt, vl);
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}
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int av_log_get_level(void)
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{
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return av_log_level;
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}
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void av_log_set_level(int level)
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{
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av_log_level = level;
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}
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void av_log_set_flags(int arg)
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{
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flags = arg;
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}
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void av_log_set_callback(void (*callback)(void*, int, const char*, va_list))
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{
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av_log_callback = callback;
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}
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