79 lines
2.9 KiB
C
79 lines
2.9 KiB
C
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/**
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* \file include/error.h
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* \brief Application interface library for the ALSA driver
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* \author Jaroslav Kysela <perex@perex.cz>
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* \author Abramo Bagnara <abramo@alsa-project.org>
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* \author Takashi Iwai <tiwai@suse.de>
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* \date 1998-2001
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*
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* Application interface library for the ALSA driver
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*/
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/*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* This program 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
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* GNU 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 this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#ifndef __ALSA_ERROR_H
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#define __ALSA_ERROR_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* \defgroup Error Error handling
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* Error handling macros and functions.
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* \{
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*/
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#define SND_ERROR_BEGIN 500000 /**< Lower boundary of sound error codes. */
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#define SND_ERROR_INCOMPATIBLE_VERSION (SND_ERROR_BEGIN+0) /**< Kernel/library protocols are not compatible. */
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#define SND_ERROR_ALISP_NIL (SND_ERROR_BEGIN+1) /**< Lisp encountered an error during acall. */
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const char *snd_strerror(int errnum);
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/**
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* \brief Error handler callback.
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* \param file Source file name.
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* \param line Line number.
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* \param function Function name.
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* \param err Value of \c errno, or 0 if not relevant.
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* \param fmt \c printf(3) format.
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* \param ... \c printf(3) arguments.
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*
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* A function of this type is called by the ALSA library when an error occurs.
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* This function usually shows the message on the screen, and/or logs it.
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*/
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typedef void (*snd_lib_error_handler_t)(const char *file, int line, const char *function, int err, const char *fmt, ...) /* __attribute__ ((format (printf, 5, 6))) */;
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extern snd_lib_error_handler_t snd_lib_error;
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extern int snd_lib_error_set_handler(snd_lib_error_handler_t handler);
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#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 95)
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#define SNDERR(...) snd_lib_error(__FILE__, __LINE__, __FUNCTION__, 0, __VA_ARGS__) /**< Shows a sound error message. */
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#define SYSERR(...) snd_lib_error(__FILE__, __LINE__, __FUNCTION__, errno, __VA_ARGS__) /**< Shows a system error message (related to \c errno). */
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#else
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#define SNDERR(args...) snd_lib_error(__FILE__, __LINE__, __FUNCTION__, 0, ##args) /**< Shows a sound error message. */
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#define SYSERR(args...) snd_lib_error(__FILE__, __LINE__, __FUNCTION__, errno, ##args) /**< Shows a system error message (related to \c errno). */
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#endif
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/** \} */
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#ifdef __cplusplus
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}
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#endif
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#endif /* __ALSA_ERROR_H */
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