alsa-lib/src/error.c

/*
 *  Error Routines
 *  Copyright (c) 1998 by Jaroslav Kysela <perex@suse.cz>
 *
 *  snd_strerror routine needs to be recoded for locale support
 *
 *
 *   This library is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU Library General Public License as
 *   published by the Free Software Foundation; either version 2 of
 *   the License, or (at your option) any later version.
 *
 *   This program 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 Library General Public License for more details.
 *
 *   You should have received a copy of the GNU Library General Public
 *   License along with this library; if not, write to the Free Software
 *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include "asoundlib.h"

static const char *snd_error_codes[] =
{
	"Sound protocol is not compatible"
};

const char *snd_strerror(int errnum)
{
	if (errnum < 0)
		errnum = -errnum;
	if (errnum < SND_ERROR_BEGIN)
		return (const char *) strerror(errnum);
	errnum -= SND_ERROR_BEGIN;
	if ((unsigned int) errnum >= sizeof(snd_error_codes) / sizeof(const char *))
		 return "Unknown error";
	return snd_error_codes[errnum];
}

static void snd_lib_error_default(const char *file, int line, const char *function, int err, const char *fmt, ...)
{
	va_list arg;
	va_start(arg, fmt);
	fprintf(stderr, "ALSA lib %s:%i:(%s) ", file, line, function);
	vfprintf(stderr, fmt, arg);
	if (err)
		fprintf(stderr, ": %s", snd_strerror(err));
	putc('\n', stderr);
	va_end(arg);
}

snd_lib_error_handler_t *snd_lib_error = snd_lib_error_default;

int snd_lib_error_set_handler(snd_lib_error_handler_t *handler)
{
	snd_lib_error = handler == NULL ? snd_lib_error_default : handler;
	return 0;
}