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/* FluidSynth - A Software Synthesizer
*
* Copyright (C) 2003 Peter Hanappe and others.
*
* 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 library 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., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA
*/
#ifndef _FLUIDSYNTH_LOG_H
#define _FLUIDSYNTH_LOG_H
#ifdef __cplusplus
extern "C" {
#endif
/**
* @file log.h
* @brief Logging interface
*
* The default logging function of the fluidsynth prints its messages
* to the stderr. The synthesizer uses five level of messages: #FLUID_PANIC,
* #FLUID_ERR, #FLUID_WARN, #FLUID_INFO, and #FLUID_DBG.
*
* A client application can install a new log function to handle the
* messages differently. In the following example, the application
* sets a callback function to display #FLUID_PANIC messages in a dialog,
* and ignores all other messages by setting the log function to
* NULL:
*
* @code
* fluid_set_log_function(FLUID_PANIC, show_dialog, (void*) root_window);
* fluid_set_log_function(FLUID_ERR, NULL, NULL);
* fluid_set_log_function(FLUID_WARN, NULL, NULL);
* fluid_set_log_function(FLUID_DBG, NULL, NULL);
* @endcode
*/
/**
* FluidSynth log levels.
*/
enum fluid_log_level {
FLUID_PANIC, /**< The synth can't function correctly any more */
FLUID_ERR, /**< Serious error occurred */
FLUID_WARN, /**< Warning */
FLUID_INFO, /**< Verbose informational messages */
FLUID_DBG, /**< Debugging messages */
LAST_LOG_LEVEL
};
/**
* Log function handler callback type used by fluid_set_log_function().
* @param level Log level (#fluid_log_level)
* @param message Log message text
* @param data User data pointer supplied to fluid_set_log_function().
*/
typedef void (*fluid_log_function_t)(int level, char* message, void* data);
FLUIDSYNTH_API
fluid_log_function_t fluid_set_log_function(int level, fluid_log_function_t fun, void* data);
FLUIDSYNTH_API void fluid_default_log_function(int level, char* message, void* data);
FLUIDSYNTH_API int fluid_log(int level, const char *fmt, ...);
#ifdef __cplusplus
}
#endif
#endif /* _FLUIDSYNTH_LOG_H */
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