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+++ b/jni/pjproject-android/.svn/pristine/a6/a657b686b732d29347d96d98d461b0a2aeced8a4.svn-base
@@ -0,0 +1,587 @@
+/* $Id$ */
+/* 
+ * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
+ * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
+ */
+#ifndef __PJ_ERRNO_H__
+#define __PJ_ERRNO_H__
+
+/**
+ * @file errno.h
+ * @brief PJLIB Error Subsystem
+ */
+#include <pj/types.h>
+#include <pj/compat/errno.h>
+#include <stdarg.h>
+
+PJ_BEGIN_DECL
+
+/**
+ * @defgroup pj_errno Error Subsystem
+ * @{
+ *
+ * The PJLIB Error Subsystem is a framework to unify all error codes
+ * produced by all components into a single error space, and provide
+ * uniform set of APIs to access them. With this framework, any error
+ * codes are encoded as pj_status_t value. The framework is extensible,
+ * application may register new error spaces to be recognized by
+ * the framework.
+ *
+ * @section pj_errno_retval Return Values
+ *
+ * All functions that returns @a pj_status_t returns @a PJ_SUCCESS if the
+ * operation was completed successfully, or non-zero value to indicate 
+ * error. If the error came from operating system, then the native error
+ * code is translated/folded into PJLIB's error namespace by using
+ * #PJ_STATUS_FROM_OS() macro. The function will do this automatically
+ * before returning the error to caller.
+ *
+ * @section err_services Retrieving and Displaying Error Messages
+ *
+ * The framework provides the following APIs to retrieve and/or display
+ * error messages:
+ *
+ *   - #pj_strerror(): this is the base API to retrieve error string
+ *      description for the specified pj_status_t error code.
+ *
+ *   - #PJ_PERROR() macro: use this macro similar to PJ_LOG to format
+ *      an error message and display them to the log
+ *
+ *   - #pj_perror(): this function is similar to PJ_PERROR() but unlike
+ *      #PJ_PERROR(), this function will always be included in the
+ *      link process. Due to this reason, prefer to use #PJ_PERROR()
+ *      if the application is concerned about the executable size.
+ *
+ * Application MUST NOT pass native error codes (such as error code from
+ * functions like GetLastError() or errno) to PJLIB functions expecting
+ * @a pj_status_t.
+ *
+ * @section err_extending Extending the Error Space
+ *
+ * Application may register new error space to be recognized by the
+ * framework by using #pj_register_strerror(). Use the range started
+ * from PJ_ERRNO_START_USER to avoid conflict with existing error
+ * spaces.
+ *
+ */
+
+/**
+ * Guidelines on error message length.
+ */
+#define PJ_ERR_MSG_SIZE  80
+
+/**
+ * Buffer for title string of #PJ_PERROR().
+ */
+#ifndef PJ_PERROR_TITLE_BUF_SIZE
+#   define PJ_PERROR_TITLE_BUF_SIZE	120
+#endif
+
+
+/**
+ * Get the last platform error/status, folded into pj_status_t.
+ * @return	OS dependent error code, folded into pj_status_t.
+ * @remark	This function gets errno, or calls GetLastError() function and
+ *		convert the code into pj_status_t with PJ_STATUS_FROM_OS. Do
+ *		not call this for socket functions!
+ * @see	pj_get_netos_error()
+ */
+PJ_DECL(pj_status_t) pj_get_os_error(void);
+
+/**
+ * Set last error.
+ * @param code	pj_status_t
+ */
+PJ_DECL(void) pj_set_os_error(pj_status_t code);
+
+/**
+ * Get the last error from socket operations.
+ * @return	Last socket error, folded into pj_status_t.
+ */
+PJ_DECL(pj_status_t) pj_get_netos_error(void);
+
+/**
+ * Set error code.
+ * @param code	pj_status_t.
+ */
+PJ_DECL(void) pj_set_netos_error(pj_status_t code);
+
+
+/**
+ * Get the error message for the specified error code. The message
+ * string will be NULL terminated.
+ *
+ * @param statcode  The error code.
+ * @param buf	    Buffer to hold the error message string.
+ * @param bufsize   Size of the buffer.
+ *
+ * @return	    The error message as NULL terminated string,
+ *                  wrapped with pj_str_t.
+ */
+PJ_DECL(pj_str_t) pj_strerror( pj_status_t statcode, 
+			       char *buf, pj_size_t bufsize);
+
+/**
+ * A utility macro to print error message pertaining to the specified error 
+ * code to the log. This macro will construct the error message title 
+ * according to the 'title_fmt' argument, and add the error string pertaining
+ * to the error code after the title string. A colon (':') will be added 
+ * automatically between the title and the error string.
+ *
+ * This function is similar to pj_perror() function, but has the advantage
+ * that the function call can be omitted from the link process if the
+ * log level argument is below PJ_LOG_MAX_LEVEL threshold.
+ *
+ * Note that the title string constructed from the title_fmt will be built on
+ * a string buffer which size is PJ_PERROR_TITLE_BUF_SIZE, which normally is
+ * allocated from the stack. By default this buffer size is small (around
+ * 120 characters). Application MUST ensure that the constructed title string
+ * will not exceed this limit, since not all platforms support truncating
+ * the string.
+ *
+ * @see pj_perror()
+ *
+ * @param level	    The logging verbosity level, valid values are 0-6. Lower
+ *		    number indicates higher importance, with level zero 
+ *		    indicates fatal error. Only numeral argument is 
+ *		    permitted (e.g. not variable).
+ * @param arg	    Enclosed 'printf' like arguments, with the following
+ *		    arguments:
+ *		     - the sender (NULL terminated string),
+ *		     - the error code (pj_status_t)
+ *		     - the format string (title_fmt), and 
+ *		     - optional variable number of arguments suitable for the 
+ *		       format string.
+ *
+ * Sample:
+ * \verbatim
+   PJ_PERROR(2, (__FILE__, PJ_EBUSY, "Error making %s", "coffee"));
+   \endverbatim
+ * @hideinitializer
+ */
+#define PJ_PERROR(level,arg)	do { \
+				    pj_perror_wrapper_##level(arg); \
+				} while (0)
+
+/**
+ * A utility function to print error message pertaining to the specified error 
+ * code to the log. This function will construct the error message title 
+ * according to the 'title_fmt' argument, and add the error string pertaining
+ * to the error code after the title string. A colon (':') will be added 
+ * automatically between the title and the error string.
+ *
+ * Unlike the PJ_PERROR() macro, this function takes the \a log_level argument
+ * as a normal argument, unlike in PJ_PERROR() where a numeral value must be
+ * given. However this function will always be linked to the executable,
+ * unlike PJ_PERROR() which can be omitted when the level is below the 
+ * PJ_LOG_MAX_LEVEL.
+ *
+ * Note that the title string constructed from the title_fmt will be built on
+ * a string buffer which size is PJ_PERROR_TITLE_BUF_SIZE, which normally is
+ * allocated from the stack. By default this buffer size is small (around
+ * 120 characters). Application MUST ensure that the constructed title string
+ * will not exceed this limit, since not all platforms support truncating
+ * the string.
+ *
+ * @see PJ_PERROR()
+ */
+PJ_DECL(void) pj_perror(int log_level, const char *sender, pj_status_t status,
+		        const char *title_fmt, ...);
+
+
+/**
+ * Type of callback to be specified in #pj_register_strerror()
+ *
+ * @param e	    The error code to lookup.
+ * @param msg	    Buffer to store the error message.
+ * @param max	    Length of the buffer.
+ *
+ * @return	    The error string.
+ */
+typedef pj_str_t (*pj_error_callback)(pj_status_t e, char *msg, pj_size_t max);
+
+
+/**
+ * Register strerror message handler for the specified error space.
+ * Application can register its own handler to supply the error message
+ * for the specified error code range. This handler will be called
+ * by #pj_strerror().
+ *
+ * @param start_code	The starting error code where the handler should
+ *			be called to retrieve the error message.
+ * @param err_space	The size of error space. The error code range then
+ *			will fall in start_code to start_code+err_space-1
+ *			range.
+ * @param f		The handler to be called when #pj_strerror() is
+ *			supplied with error code that falls into this range.
+ *
+ * @return		PJ_SUCCESS or the specified error code. The 
+ *			registration may fail when the error space has been
+ *			occupied by other handler, or when there are too many
+ *			handlers registered to PJLIB.
+ */
+PJ_DECL(pj_status_t) pj_register_strerror(pj_status_t start_code,
+					  pj_status_t err_space,
+					  pj_error_callback f);
+
+/**
+ * @hideinitializer
+ * Return platform os error code folded into pj_status_t code. This is
+ * the macro that is used throughout the library for all PJLIB's functions
+ * that returns error from operating system. Application may override
+ * this macro to reduce size (e.g. by defining it to always return 
+ * #PJ_EUNKNOWN).
+ *
+ * Note:
+ *  This macro MUST return non-zero value regardless whether zero is
+ *  passed as the argument. The reason is to protect logic error when
+ *  the operating system doesn't report error codes properly.
+ *
+ * @param os_code   Platform OS error code. This value may be evaluated
+ *		    more than once.
+ * @return	    The platform os error code folded into pj_status_t.
+ */
+#ifndef PJ_RETURN_OS_ERROR
+#   define PJ_RETURN_OS_ERROR(os_code)   (os_code ? \
+					    PJ_STATUS_FROM_OS(os_code) : -1)
+#endif
+
+
+/**
+ * @hideinitializer
+ * Fold a platform specific error into an pj_status_t code.
+ *
+ * @param e	The platform os error code.
+ * @return	pj_status_t
+ * @warning	Macro implementation; the syserr argument may be evaluated
+ *		multiple times.
+ */
+#if PJ_NATIVE_ERR_POSITIVE
+#   define PJ_STATUS_FROM_OS(e) (e == 0 ? PJ_SUCCESS : e + PJ_ERRNO_START_SYS)
+#else
+#   define PJ_STATUS_FROM_OS(e) (e == 0 ? PJ_SUCCESS : PJ_ERRNO_START_SYS - e)
+#endif
+
+/**
+ * @hideinitializer
+ * Fold an pj_status_t code back to the native platform defined error.
+ *
+ * @param e	The pj_status_t folded platform os error code.
+ * @return	pj_os_err_type
+ * @warning	macro implementation; the statcode argument may be evaluated
+ *		multiple times.  If the statcode was not created by 
+ *		pj_get_os_error or PJ_STATUS_FROM_OS, the results are undefined.
+ */
+#if PJ_NATIVE_ERR_POSITIVE
+#   define PJ_STATUS_TO_OS(e) (e == 0 ? PJ_SUCCESS : e - PJ_ERRNO_START_SYS)
+#else
+#   define PJ_STATUS_TO_OS(e) (e == 0 ? PJ_SUCCESS : PJ_ERRNO_START_SYS - e)
+#endif
+
+
+/**
+ * @defgroup pj_errnum PJLIB's Own Error Codes
+ * @ingroup pj_errno
+ * @{
+ */
+
+/**
+ * Use this macro to generate error message text for your error code,
+ * so that they look uniformly as the rest of the libraries.
+ *
+ * @param code	The error code
+ * @param msg	The error test.
+ */
+#ifndef PJ_BUILD_ERR
+#   define PJ_BUILD_ERR(code,msg) { code, msg " (" #code ")" }
+#endif
+
+
+/**
+ * @hideinitializer
+ * Unknown error has been reported.
+ */
+#define PJ_EUNKNOWN	    (PJ_ERRNO_START_STATUS + 1)	/* 70001 */
+/**
+ * @hideinitializer
+ * The operation is pending and will be completed later.
+ */
+#define PJ_EPENDING	    (PJ_ERRNO_START_STATUS + 2)	/* 70002 */
+/**
+ * @hideinitializer
+ * Too many connecting sockets.
+ */
+#define PJ_ETOOMANYCONN	    (PJ_ERRNO_START_STATUS + 3)	/* 70003 */
+/**
+ * @hideinitializer
+ * Invalid argument.
+ */
+#define PJ_EINVAL	    (PJ_ERRNO_START_STATUS + 4)	/* 70004 */
+/**
+ * @hideinitializer
+ * Name too long (eg. hostname too long).
+ */
+#define PJ_ENAMETOOLONG	    (PJ_ERRNO_START_STATUS + 5)	/* 70005 */
+/**
+ * @hideinitializer
+ * Not found.
+ */
+#define PJ_ENOTFOUND	    (PJ_ERRNO_START_STATUS + 6)	/* 70006 */
+/**
+ * @hideinitializer
+ * Not enough memory.
+ */
+#define PJ_ENOMEM	    (PJ_ERRNO_START_STATUS + 7)	/* 70007 */
+/**
+ * @hideinitializer
+ * Bug detected!
+ */
+#define PJ_EBUG             (PJ_ERRNO_START_STATUS + 8)	/* 70008 */
+/**
+ * @hideinitializer
+ * Operation timed out.
+ */
+#define PJ_ETIMEDOUT        (PJ_ERRNO_START_STATUS + 9)	/* 70009 */
+/**
+ * @hideinitializer
+ * Too many objects.
+ */
+#define PJ_ETOOMANY         (PJ_ERRNO_START_STATUS + 10)/* 70010 */
+/**
+ * @hideinitializer
+ * Object is busy.
+ */
+#define PJ_EBUSY            (PJ_ERRNO_START_STATUS + 11)/* 70011 */
+/**
+ * @hideinitializer
+ * The specified option is not supported.
+ */
+#define PJ_ENOTSUP	    (PJ_ERRNO_START_STATUS + 12)/* 70012 */
+/**
+ * @hideinitializer
+ * Invalid operation.
+ */
+#define PJ_EINVALIDOP	    (PJ_ERRNO_START_STATUS + 13)/* 70013 */
+/**
+ * @hideinitializer
+ * Operation is cancelled.
+ */
+#define PJ_ECANCELLED	    (PJ_ERRNO_START_STATUS + 14)/* 70014 */
+/**
+ * @hideinitializer
+ * Object already exists.
+ */
+#define PJ_EEXISTS          (PJ_ERRNO_START_STATUS + 15)/* 70015 */
+/**
+ * @hideinitializer
+ * End of file.
+ */
+#define PJ_EEOF		    (PJ_ERRNO_START_STATUS + 16)/* 70016 */
+/**
+ * @hideinitializer
+ * Size is too big.
+ */
+#define PJ_ETOOBIG	    (PJ_ERRNO_START_STATUS + 17)/* 70017 */
+/**
+ * @hideinitializer
+ * Error in gethostbyname(). This is a generic error returned when
+ * gethostbyname() has returned an error.
+ */
+#define PJ_ERESOLVE	    (PJ_ERRNO_START_STATUS + 18)/* 70018 */
+/**
+ * @hideinitializer
+ * Size is too small.
+ */
+#define PJ_ETOOSMALL	    (PJ_ERRNO_START_STATUS + 19)/* 70019 */
+/**
+ * @hideinitializer
+ * Ignored
+ */
+#define PJ_EIGNORED	    (PJ_ERRNO_START_STATUS + 20)/* 70020 */
+/**
+ * @hideinitializer
+ * IPv6 is not supported
+ */
+#define PJ_EIPV6NOTSUP	    (PJ_ERRNO_START_STATUS + 21)/* 70021 */
+/**
+ * @hideinitializer
+ * Unsupported address family
+ */
+#define PJ_EAFNOTSUP	    (PJ_ERRNO_START_STATUS + 22)/* 70022 */
+/**
+ * @hideinitializer
+ * Object no longer exists
+ */
+#define PJ_EGONE	    (PJ_ERRNO_START_STATUS + 23)/* 70023 */
+/**
+ * @hideinitializer
+ * Socket is stopped
+ */
+#define PJ_ESOCKETSTOP	    (PJ_ERRNO_START_STATUS + 24)/* 70024 */
+
+/** @} */   /* pj_errnum */
+
+/** @} */   /* pj_errno */
+
+
+/**
+ * PJ_ERRNO_START is where PJLIB specific error values start.
+ */
+#define PJ_ERRNO_START		20000
+
+/**
+ * PJ_ERRNO_SPACE_SIZE is the maximum number of errors in one of 
+ * the error/status range below.
+ */
+#define PJ_ERRNO_SPACE_SIZE	50000
+
+/**
+ * PJ_ERRNO_START_STATUS is where PJLIB specific status codes start.
+ * Effectively the error in this class would be 70000 - 119000.
+ */
+#define PJ_ERRNO_START_STATUS	(PJ_ERRNO_START + PJ_ERRNO_SPACE_SIZE)
+
+/**
+ * PJ_ERRNO_START_SYS converts platform specific error codes into
+ * pj_status_t values.
+ * Effectively the error in this class would be 120000 - 169000.
+ */
+#define PJ_ERRNO_START_SYS	(PJ_ERRNO_START_STATUS + PJ_ERRNO_SPACE_SIZE)
+
+/**
+ * PJ_ERRNO_START_USER are reserved for applications that use error
+ * codes along with PJLIB codes.
+ * Effectively the error in this class would be 170000 - 219000.
+ */
+#define PJ_ERRNO_START_USER	(PJ_ERRNO_START_SYS + PJ_ERRNO_SPACE_SIZE)
+
+
+/*
+ * Below are list of error spaces that have been taken so far:
+ *  - PJSIP_ERRNO_START		(PJ_ERRNO_START_USER)
+ *  - PJMEDIA_ERRNO_START	(PJ_ERRNO_START_USER + PJ_ERRNO_SPACE_SIZE)
+ *  - PJSIP_SIMPLE_ERRNO_START	(PJ_ERRNO_START_USER + PJ_ERRNO_SPACE_SIZE*2)
+ *  - PJLIB_UTIL_ERRNO_START	(PJ_ERRNO_START_USER + PJ_ERRNO_SPACE_SIZE*3)
+ *  - PJNATH_ERRNO_START	(PJ_ERRNO_START_USER + PJ_ERRNO_SPACE_SIZE*4)
+ *  - PJMEDIA_AUDIODEV_ERRNO_START (PJ_ERRNO_START_USER + PJ_ERRNO_SPACE_SIZE*5)
+ *  - PJ_SSL_ERRNO_START	   (PJ_ERRNO_START_USER + PJ_ERRNO_SPACE_SIZE*6)
+ *  - PJMEDIA_VIDEODEV_ERRNO_START (PJ_ERRNO_START_USER + PJ_ERRNO_SPACE_SIZE*7)
+ */
+
+/* Internal */
+void pj_errno_clear_handlers(void);
+
+
+/****** Internal for PJ_PERROR *******/
+
+/**
+ * @def pj_perror_wrapper_1(arg)
+ * Internal function to write log with verbosity 1. Will evaluate to
+ * empty expression if PJ_LOG_MAX_LEVEL is below 1.
+ * @param arg       Log expression.
+ */
+#if PJ_LOG_MAX_LEVEL >= 1
+    #define pj_perror_wrapper_1(arg)	pj_perror_1 arg
+    /** Internal function. */
+    PJ_DECL(void) pj_perror_1(const char *sender, pj_status_t status, 
+			      const char *title_fmt, ...);
+#else
+    #define pj_perror_wrapper_1(arg)
+#endif
+
+/**
+ * @def pj_perror_wrapper_2(arg)
+ * Internal function to write log with verbosity 2. Will evaluate to
+ * empty expression if PJ_LOG_MAX_LEVEL is below 2.
+ * @param arg       Log expression.
+ */
+#if PJ_LOG_MAX_LEVEL >= 2
+    #define pj_perror_wrapper_2(arg)	pj_perror_2 arg
+    /** Internal function. */
+    PJ_DECL(void) pj_perror_2(const char *sender, pj_status_t status, 
+			      const char *title_fmt, ...);
+#else
+    #define pj_perror_wrapper_2(arg)
+#endif
+
+/**
+ * @def pj_perror_wrapper_3(arg)
+ * Internal function to write log with verbosity 3. Will evaluate to
+ * empty expression if PJ_LOG_MAX_LEVEL is below 3.
+ * @param arg       Log expression.
+ */
+#if PJ_LOG_MAX_LEVEL >= 3
+    #define pj_perror_wrapper_3(arg)	pj_perror_3 arg
+    /** Internal function. */
+    PJ_DECL(void) pj_perror_3(const char *sender, pj_status_t status, 
+			      const char *title_fmt, ...);
+#else
+    #define pj_perror_wrapper_3(arg)
+#endif
+
+/**
+ * @def pj_perror_wrapper_4(arg)
+ * Internal function to write log with verbosity 4. Will evaluate to
+ * empty expression if PJ_LOG_MAX_LEVEL is below 4.
+ * @param arg       Log expression.
+ */
+#if PJ_LOG_MAX_LEVEL >= 4
+    #define pj_perror_wrapper_4(arg)	pj_perror_4 arg
+    /** Internal function. */
+    PJ_DECL(void) pj_perror_4(const char *sender, pj_status_t status, 
+			      const char *title_fmt, ...);
+#else
+    #define pj_perror_wrapper_4(arg)
+#endif
+
+/**
+ * @def pj_perror_wrapper_5(arg)
+ * Internal function to write log with verbosity 5. Will evaluate to
+ * empty expression if PJ_LOG_MAX_LEVEL is below 5.
+ * @param arg       Log expression.
+ */
+#if PJ_LOG_MAX_LEVEL >= 5
+    #define pj_perror_wrapper_5(arg)	pj_perror_5 arg
+    /** Internal function. */
+    PJ_DECL(void) pj_perror_5(const char *sender, pj_status_t status, 
+			      const char *title_fmt, ...);
+#else
+    #define pj_perror_wrapper_5(arg)
+#endif
+
+/**
+ * @def pj_perror_wrapper_6(arg)
+ * Internal function to write log with verbosity 6. Will evaluate to
+ * empty expression if PJ_LOG_MAX_LEVEL is below 6.
+ * @param arg       Log expression.
+ */
+#if PJ_LOG_MAX_LEVEL >= 6
+    #define pj_perror_wrapper_6(arg)	pj_perror_6 arg
+    /** Internal function. */
+    PJ_DECL(void) pj_perror_6(const char *sender, pj_status_t status, 
+			      const char *title_fmt, ...);
+#else
+    #define pj_perror_wrapper_6(arg)
+#endif
+
+
+
+
+PJ_END_DECL
+
+#endif	/* __PJ_ERRNO_H__ */
+