--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/spandsp-0.0.6pre17/src/spandsp/logging.h	Fri Jun 25 15:50:58 2010 +0200
@@ -0,0 +1,141 @@
+/*
+ * SpanDSP - a series of DSP components for telephony
+ *
+ * logging.h - definitions for error and debug logging.
+ *
+ * Written by Steve Underwood <steveu@coppice.org>
+ *
+ * Copyright (C) 2005 Steve Underwood
+ *
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2.1,
+ * as published by the Free Software Foundation.
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * $Id: logging.h,v 1.20 2009/02/10 17:44:18 steveu Exp $
+ */
+
+/*! \file */
+
+/*! \page logging_page Logging
+\section logging_page_sec_1 What does it do?
+???.
+*/
+
+#if !defined(_SPANDSP_LOGGING_H_)
+#define _SPANDSP_LOGGING_H_
+
+/*! General logging function for spandsp logging. */
+typedef void (*message_handler_func_t)(int level, const char *text);
+
+/*! Error logging function for spandsp logging. */
+typedef void (*error_handler_func_t)(const char *text);
+
+/* Logging elements */
+enum
+{
+    SPAN_LOG_SEVERITY_MASK              = 0x00FF,
+    SPAN_LOG_SHOW_DATE                  = 0x0100,
+    SPAN_LOG_SHOW_SAMPLE_TIME           = 0x0200,
+    SPAN_LOG_SHOW_SEVERITY              = 0x0400,
+    SPAN_LOG_SHOW_PROTOCOL              = 0x0800,
+    SPAN_LOG_SHOW_VARIANT               = 0x1000,
+    SPAN_LOG_SHOW_TAG                   = 0x2000,
+    SPAN_LOG_SUPPRESS_LABELLING         = 0x8000
+};
+
+/* Logging severity levels */
+enum
+{
+    SPAN_LOG_NONE                       = 0,
+    SPAN_LOG_ERROR                      = 1,
+    SPAN_LOG_WARNING                    = 2,
+    SPAN_LOG_PROTOCOL_ERROR             = 3,
+    SPAN_LOG_PROTOCOL_WARNING           = 4,
+    SPAN_LOG_FLOW                       = 5,
+    SPAN_LOG_FLOW_2                     = 6,
+    SPAN_LOG_FLOW_3                     = 7,
+    SPAN_LOG_DEBUG                      = 8,
+    SPAN_LOG_DEBUG_2                    = 9,
+    SPAN_LOG_DEBUG_3                    = 10
+};
+
+/*!
+    Logging descriptor. This defines the working state for a single instance of
+    the logging facility for spandsp.
+*/
+typedef struct logging_state_s logging_state_t;
+
+#if defined(__cplusplus)
+extern "C"
+{
+#endif
+
+/*! Test if logging of a specified severity level is enabled.
+    \brief Test if logging of a specified severity level is enabled.
+    \param s The logging context.
+    \param level The severity level to be tested.
+    \return TRUE if logging is enable, else FALSE.
+*/
+SPAN_DECLARE(int) span_log_test(logging_state_t *s, int level);
+
+/*! Generate a log entry.
+    \brief Generate a log entry.
+    \param s The logging context.
+    \param level The severity level of the entry.
+    \param format ???
+    \return 0 if no output generated, else 1.
+*/
+SPAN_DECLARE(int) span_log(logging_state_t *s, int level, const char *format, ...);
+
+/*! Generate a log entry displaying the contents of a buffer.
+    \brief Generate a log entry displaying the contents of a buffer
+    \param s The logging context.
+    \param level The severity level of the entry.
+    \param tag A label for the log entry.
+    \param buf The buffer to be dumped to the log.
+    \param len The length of buf.
+    \return 0 if no output generated, else 1.
+*/
+SPAN_DECLARE(int) span_log_buf(logging_state_t *s, int level, const char *tag, const uint8_t *buf, int len);
+
+SPAN_DECLARE(int) span_log_set_level(logging_state_t *s, int level);
+
+SPAN_DECLARE(int) span_log_set_tag(logging_state_t *s, const char *tag);
+
+SPAN_DECLARE(int) span_log_set_protocol(logging_state_t *s, const char *protocol);
+
+SPAN_DECLARE(int) span_log_set_sample_rate(logging_state_t *s, int samples_per_second);
+
+SPAN_DECLARE(int) span_log_bump_samples(logging_state_t *s, int samples);
+
+SPAN_DECLARE(void) span_log_set_message_handler(logging_state_t *s, message_handler_func_t func);
+
+SPAN_DECLARE(void) span_log_set_error_handler(logging_state_t *s, error_handler_func_t func);
+
+SPAN_DECLARE(void) span_set_message_handler(message_handler_func_t func);
+
+SPAN_DECLARE(void) span_set_error_handler(error_handler_func_t func);
+
+SPAN_DECLARE(logging_state_t *) span_log_init(logging_state_t *s, int level, const char *tag);
+
+SPAN_DECLARE(int) span_log_release(logging_state_t *s);
+
+SPAN_DECLARE(int) span_log_free(logging_state_t *s);
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif
+/*- End of file ------------------------------------------------------------*/