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/*
* hda-emu - simple HD-audio codec emulator for debugging snd-hda-intel driver
*
* Logging stuff
*
* Copyright (c) Takashi Iwai <tiwai@suse.de>
*
* This driver is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This driver 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <stdlib.h>
#include <ctype.h>
#include <assert.h>
#include <signal.h>
#include "hda-types.h"
#include "hda-log.h"
static int log_level = HDA_LOG_VERB;
static FILE *logfp;
static int log_flags = HDA_LOG_FLAG_COLOR;
int hda_log_trap_on_error;
static int log_previous_prefix = -1;
static void set_color(int level)
{
static char *color_seq[] = {
[HDA_LOG_ERR] = "31;1", /* bold red */
[HDA_LOG_WARN] = "31", /* red */
[HDA_LOG_KERN] = "32", /* green */
[HDA_LOG_INFO] = "0", /* normal */
[HDA_LOG_VERB] = "36", /* blue */
};
if (!(log_flags & HDA_LOG_FLAG_COLOR))
return;
if (level < 0)
level = 0;
else if (level > HDA_LOG_VERB)
level = HDA_LOG_VERB;
printf("\x1b[%sm", color_seq[level]);
}
static void reset_color(void)
{
if (!(log_flags & HDA_LOG_FLAG_COLOR))
return;
printf("\x1b[0m");
}
static void print_prefix(int level)
{
static char *prefix_seq[] = {
[HDA_LOG_ERR] = "Error",
[HDA_LOG_WARN] = "Warning",
[HDA_LOG_KERN] = "Kernel",
[HDA_LOG_INFO] = "Info",
[HDA_LOG_VERB] = "Verb",
};
if (!(log_flags & HDA_LOG_FLAG_PREFIX))
return;
if (level < 0)
level = 0;
else if (level > HDA_LOG_VERB)
level = HDA_LOG_VERB;
if (log_previous_prefix == level)
return;
if (log_previous_prefix != -1)
fprintf(logfp, "\n");
fprintf(logfp, "%s: ", prefix_seq[level]);
log_previous_prefix = level;
}
static void _hda_log(int level, const char *fmt, va_list ap)
{
va_list ap2;
int i;
if (level > log_level)
return;
if (logfp == stdout)
set_color(level);
print_prefix(level);
va_copy(ap2, ap);
vfprintf(logfp, fmt, ap);
if (!(log_flags & HDA_LOG_FLAG_NO_ECHO) && logfp != stdout)
vprintf(fmt, ap2);
va_end(ap2);
if (logfp == stdout)
reset_color();
if (((i = strlen(fmt)) > 0) && (fmt[i-1] == '\n'))
log_previous_prefix = -1;
if ((level == HDA_LOG_ERR || level == HDA_LOG_WARN) &&
hda_log_trap_on_error)
raise(SIGTRAP);
}
void hda_log(int level, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
_hda_log(level, fmt, ap);
va_end(ap);
}
void hda_log_printk(const char *fmt, ...)
{
va_list ap;
int level = 7;
va_start(ap, fmt);
if (fmt[0] == '<' && isdigit(fmt[1]) && fmt[2] == '>') {
level = fmt[1] - '0';
fmt += 3;
}
if (level >= 5)
level = HDA_LOG_KERN;
else if (level == 4)
level = HDA_LOG_WARN;
else
level = HDA_LOG_ERR;
_hda_log(level, fmt, ap);
va_end(ap);
}
void hda_log_echo(int level, const char *fmt, ...)
{
va_list ap;
if ((log_flags & HDA_LOG_FLAG_NO_ECHO) || logfp == stdout ||
level > log_level)
return;
va_start(ap, fmt);
vfprintf(logfp, fmt, ap);
va_end(ap);
if (level == HDA_LOG_ERR && hda_log_trap_on_error)
raise(SIGTRAP);
}
int hda_log_init(const char *file, unsigned int flags)
{
if (!file || !strcmp(file, "-") || !strcmp(file, "stdout"))
logfp = stdout;
else {
logfp = fopen(file, "w");
if (!logfp) {
fprintf(stderr, "cannot open log file %s\n", file);
exit(1);
}
}
log_flags = flags;
return 0;
}
int hda_log_level_set(int level)
{
int saved = log_level;
log_level = level;
return saved;
}
void hda_log_flush()
{
fflush(logfp);
}
FILE *hda_get_logfp(void)
{
return logfp;
}
void *xalloc(size_t size)
{
void *p = calloc(1, size);
if (!p) {
hda_log(HDA_LOG_ERR, "No memory left\n");
exit(1);
}
return p;
}
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