libspandsp 0.0.4
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00001 /* 00002 * SpanDSP - a series of DSP components for telephony 00003 * 00004 * logging.h - definitions for error and debug logging. 00005 * 00006 * Written by Steve Underwood <steveu@coppice.org> 00007 * 00008 * Copyright (C) 2005 Steve Underwood 00009 * 00010 * All rights reserved. 00011 * 00012 * This program is free software; you can redistribute it and/or modify 00013 * it under the terms of the GNU Lesser General Public License version 2.1, 00014 * as published by the Free Software Foundation. 00015 * 00016 * This program is distributed in the hope that it will be useful, 00017 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00018 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00019 * GNU Lesser General Public License for more details. 00020 * 00021 * You should have received a copy of the GNU Lesser General Public 00022 * License along with this program; if not, write to the Free Software 00023 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 00024 * 00025 * $Id: logging.h,v 1.16 2008/05/05 11:25:01 steveu Exp $ 00026 */ 00027 00028 /*! \file */ 00029 00030 /*! \page logging_page Logging 00031 \section logging_page_sec_1 What does it do? 00032 ???. 00033 */ 00034 00035 #if !defined(_SPANDSP_LOGGING_H_) 00036 #define _SPANDSP_LOGGING_H_ 00037 00038 /*! General logging function for spandsp logging. */ 00039 typedef void (*message_handler_func_t)(int level, const char *text); 00040 00041 /*! Error logging function for spandsp logging. */ 00042 typedef void (*error_handler_func_t)(const char *text); 00043 00044 /* Logging elements */ 00045 enum 00046 { 00047 SPAN_LOG_SEVERITY_MASK = 0x00FF, 00048 SPAN_LOG_SHOW_DATE = 0x0100, 00049 SPAN_LOG_SHOW_SAMPLE_TIME = 0x0200, 00050 SPAN_LOG_SHOW_SEVERITY = 0x0400, 00051 SPAN_LOG_SHOW_PROTOCOL = 0x0800, 00052 SPAN_LOG_SHOW_VARIANT = 0x1000, 00053 SPAN_LOG_SHOW_TAG = 0x2000, 00054 SPAN_LOG_SUPPRESS_LABELLING = 0x8000 00055 }; 00056 00057 /* Logging severity levels */ 00058 enum 00059 { 00060 SPAN_LOG_NONE = 0, 00061 SPAN_LOG_ERROR = 1, 00062 SPAN_LOG_WARNING = 2, 00063 SPAN_LOG_PROTOCOL_ERROR = 3, 00064 SPAN_LOG_PROTOCOL_WARNING = 4, 00065 SPAN_LOG_FLOW = 5, 00066 SPAN_LOG_FLOW_2 = 6, 00067 SPAN_LOG_FLOW_3 = 7, 00068 SPAN_LOG_DEBUG = 8, 00069 SPAN_LOG_DEBUG_2 = 9, 00070 SPAN_LOG_DEBUG_3 = 10 00071 }; 00072 00073 /*! 00074 Logging descriptor. This defines the working state for a single instance of 00075 the logging facility for spandsp. 00076 */ 00077 typedef struct 00078 { 00079 int level; 00080 int samples_per_second; 00081 int64_t elapsed_samples; 00082 const char *tag; 00083 const char *protocol; 00084 00085 message_handler_func_t span_message; 00086 error_handler_func_t span_error; 00087 } logging_state_t; 00088 00089 #if defined(__cplusplus) 00090 extern "C" 00091 { 00092 #endif 00093 00094 /*! Test if logging of a specified severity level is enabled. 00095 \brief Test if logging of a specified severity level is enabled. 00096 \param s The logging context. 00097 \param level The severity level to be tested. 00098 \return TRUE if logging is enable, else FALSE. 00099 */ 00100 int span_log_test(logging_state_t *s, int level); 00101 00102 /*! Generate a log entry. 00103 \brief Generate a log entry. 00104 \param s The logging context. 00105 \param level The severity level of the entry. 00106 \param format ??? 00107 \return 0 if no output generated, else 1. 00108 */ 00109 int span_log(logging_state_t *s, int level, const char *format, ...); 00110 00111 /*! Generate a log entry displaying the contents of a buffer. 00112 \brief Generate a log entry displaying the contents of a buffer 00113 \param s The logging context. 00114 \param level The severity level of the entry. 00115 \param tag A label for the log entry. 00116 \param buf The buffer to be dumped to the log. 00117 \param len The length of buf. 00118 \return 0 if no output generated, else 1. 00119 */ 00120 int span_log_buf(logging_state_t *s, int level, const char *tag, const uint8_t *buf, int len); 00121 00122 int span_log_init(logging_state_t *s, int level, const char *tag); 00123 00124 int span_log_set_level(logging_state_t *s, int level); 00125 00126 int span_log_set_tag(logging_state_t *s, const char *tag); 00127 00128 int span_log_set_protocol(logging_state_t *s, const char *protocol); 00129 00130 int span_log_set_sample_rate(logging_state_t *s, int samples_per_second); 00131 00132 int span_log_bump_samples(logging_state_t *s, int samples); 00133 00134 void span_log_set_message_handler(logging_state_t *s, message_handler_func_t func); 00135 00136 void span_log_set_error_handler(logging_state_t *s, error_handler_func_t func); 00137 00138 void span_set_message_handler(message_handler_func_t func); 00139 00140 void span_set_error_handler(error_handler_func_t func); 00141 00142 #if defined(__cplusplus) 00143 } 00144 #endif 00145 00146 #endif 00147 /*- End of file ------------------------------------------------------------*/