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/*
* Copyright (c) 2011-2014 - Mauro Carvalho Chehab
* Copyright (c) 2012 - Andre Roth <neolynx@gmail.com>
*
* This program 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 version 2.1 of the License.
*
* 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
* Or, point your browser to http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
*
*/
#ifndef _LOG_H
#define _LOG_H
#include <syslog.h>
/**
* @file dvb-log.h
* @ingroup ancillary
* @brief Provides interfaces to handle libdvbv5 log messages.
* @copyright GNU Lesser General Public License version 2.1 (LGPLv2.1)
* @author Mauro Carvalho Chehab
* @author Andre Roth
*
* @par Bug Report
* Please submit bug reports and patches to linux-media@vger.kernel.org
*/
/**
* @typedef void (*dvb_logfunc)(int level, const char *fmt, ...)
* @brief typedef used by dvb_fe_open2 for the log function
* @ingroup ancillary
*/
typedef void (*dvb_logfunc)(int level, const char *fmt, ...) __attribute__ (( format( printf, 2, 3 )));
/**
* @typedef void (*dvb_logfunc)(void *logpriv, int level, const char *fmt, ...)
* @brief typedef used by dvb_fe_open2 for the log function with private context
* @ingroup ancillary
*/
typedef void (*dvb_logfunc_priv)(void *logpriv, int level, const char *fmt, ...);
/*
* Macros used internally inside libdvbv5 frontend part, to output logs
*/
#ifndef _DOXYGEN
struct dvb_v5_fe_parms;
/**
* @brief retrieve the logging function with private data from the private fe params.
*/
dvb_logfunc_priv dvb_get_log_priv(struct dvb_v5_fe_parms *, void **);
#ifndef __DVB_FE_PRIV_H
#define dvb_loglevel(level, fmt, arg...) do {\
void *priv;\
dvb_logfunc_priv f = dvb_get_log_priv(parms, &priv);\
if (f) {\
f(priv, level, fmt, ##arg);\
} else {\
parms->logfunc(level, fmt, ##arg); \
}\
} while (0)
#else
#define dvb_loglevel(level, fmt, arg...) do {\
if (parms->logfunc_priv) {\
parms->logfunc_priv(parms->logpriv, level, fmt, ##arg);\
} else {\
parms->p.logfunc(level, fmt, ##arg); \
}\
} while (0)
#endif
#define dvb_log(fmt, arg...) dvb_loglevel(LOG_INFO, fmt, ##arg)
#define dvb_logerr(fmt, arg...) dvb_loglevel(LOG_ERR, fmt, ##arg)
#define dvb_logdbg(fmt, arg...) dvb_loglevel(LOG_DEBUG, fmt, ##arg)
#define dvb_logwarn(fmt, arg...) dvb_loglevel(LOG_WARNING, fmt, ##arg)
#define dvb_loginfo(fmt, arg...) dvb_loglevel(LOG_NOTICE, fmt, ##arg)
#define dvb_perror(msg) dvb_logerr("%s: %s", msg, strerror(errno))
#endif /* _DOXYGEN */
/**
* @brief This is the prototype of the internal log function that it is used,
* if the library client doesn't desire to override with something else.
* @ingroup ancillary
*
* @param level level of the message, as defined at syslog.h
* @param fmt format string (same as format string on sprintf)
*/
void dvb_default_log(int level, const char *fmt, ...) __attribute__ (( format( printf, 2, 3 )));
#endif
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