freeswitch/src/include/switch_types.h

722 lines
24 KiB
C

/*
* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
* Copyright (C) 2005/2006, Anthony Minessale II <anthmct@yahoo.com>
*
* Version: MPL 1.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
*
* The Initial Developer of the Original Code is
* Anthony Minessale II <anthmct@yahoo.com>
* Portions created by the Initial Developer are Copyright (C)
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Anthony Minessale II <anthmct@yahoo.com>
*
* switch_types.h -- Data Types
*
*/
/*! \file switch_types.h
\brief Data Types
*/
#ifndef SWITCH_TYPES_H
#define SWITCH_TYPES_H
#include <switch.h>
BEGIN_EXTERN_C
#ifdef WIN32
#define SWITCH_PATH_SEPARATOR "\\"
#else
#define SWITCH_PATH_SEPARATOR "/"
#endif
#ifndef SWITCH_PREFIX_DIR
#define SWITCH_PREFIX_DIR "."
#endif
#ifndef SWITCH_MOD_DIR
#define SWITCH_MOD_DIR SWITCH_PREFIX_DIR SWITCH_PATH_SEPARATOR "mod"
#endif
#ifndef SWITCH_CONF_DIR
#define SWITCH_CONF_DIR SWITCH_PREFIX_DIR SWITCH_PATH_SEPARATOR "conf"
#endif
#ifndef SWITCH_LOG_DIR
#define SWITCH_LOG_DIR SWITCH_PREFIX_DIR SWITCH_PATH_SEPARATOR "log"
#endif
#ifndef SWITCH_DB_DIR
#define SWITCH_DB_DIR SWITCH_PREFIX_DIR SWITCH_PATH_SEPARATOR "db"
#endif
#ifndef SWITCH_SCRIPT_DIR
#define SWITCH_SCRIPT_DIR SWITCH_PREFIX_DIR SWITCH_PATH_SEPARATOR "scripts"
#endif
#ifndef SWITCH_HTDOCS_DIR
#define SWITCH_HTDOCS_DIR SWITCH_PREFIX_DIR SWITCH_PATH_SEPARATOR "htdocs"
#endif
struct switch_directories {
char *base_dir;
char *mod_dir;
char *conf_dir;
char *log_dir;
char *db_dir;
char *script_dir;
char *temp_dir;
char *htdocs_dir;
};
typedef struct switch_directories switch_directories;
SWITCH_DECLARE_DATA extern switch_directories SWITCH_GLOBAL_dirs;
#define SWITCH_THREAD_STACKSIZE 512 * 1024
#define SWITCH_RECCOMMENDED_BUFFER_SIZE 2048
#define SWITCH_MAX_CODECS 30
#define SWITCH_MAX_STATE_HANDLERS 30
#define SWITCH_TRUE 1
#define SWITCH_FALSE 0
#define SWITCH_CORE_QUEUE_LEN 20000
typedef enum {
SWITCH_XML_SECTION_RESULT = 0,
SWITCH_XML_SECTION_CONFIG = (1 << 0),
SWITCH_XML_SECTION_DIRECTORY = (1 << 1),
SWITCH_XML_SECTION_DIALPLAN = (1 << 2)
} switch_xml_section_t;
/*!
\enum switch_vad_flag_t
\brief RTP Related Flags
<pre>
SWITCH_VAD_FLAG_TALKING - Currently Talking
SWITCH_VAD_FLAG_EVENTS_TALK - Fire events when talking is detected
SWITCH_VAD_FLAG_EVENTS_NOTALK - Fire events when not talking is detected
SWITCH_VAD_FLAG_CNG - Send CNG
</pre>
*/
typedef enum {
SWITCH_VAD_FLAG_TALKING = ( 1 << 0 ),
SWITCH_VAD_FLAG_EVENTS_TALK = ( 1 << 1 ),
SWITCH_VAD_FLAG_EVENTS_NOTALK = ( 1 << 2 ),
SWITCH_VAD_FLAG_CNG = ( 1 << 3)
} switch_vad_flag_t;
/*!
\enum switch_rtp_flag_t
\brief RTP Related Flags
<pre>
SWITCH_RTP_FLAG_NOBLOCK - Do not block
SWITCH_RTP_FLAG_IO - IO is ready
SWITCH_RTP_FLAG_USE_TIMER - Timeout Reads and replace with a CNG Frame
SWITCH_RTP_FLAG_TIMER_RECLOCK - Resync the timer to the current clock on slips
SWITCH_RTP_FLAG_SECURE - Secure RTP
SWITCH_RTP_FLAG_AUTOADJ - Auto-Adjust the dest based on the source
SWITCH_RTP_FLAG_RAW_WRITE - Try to forward packets unscathed
SWITCH_RTP_FLAG_GOOGLEHACK - Convert payload from 102 to 97
SWITCH_RTP_FLAG_VAD - Enable VAD
SWITCH_RTP_FLAG_BREAK - Stop what you are doing and return SWITCH_STATUS_BREAK
SWITCH_RTP_FLAG_MINI - Use mini RTP when possible
</pre>
*/
typedef enum {
SWITCH_RTP_FLAG_NOBLOCK = ( 1 << 0),
SWITCH_RTP_FLAG_IO = (1 << 1),
SWITCH_RTP_FLAG_USE_TIMER = (1 << 2),
SWITCH_RTP_FLAG_TIMER_RECLOCK = (1 << 3),
SWITCH_RTP_FLAG_SECURE = (1 << 4),
SWITCH_RTP_FLAG_AUTOADJ = (1 << 5),
SWITCH_RTP_FLAG_RAW_WRITE = (1 << 6),
SWITCH_RTP_FLAG_GOOGLEHACK = (1 << 7),
SWITCH_RTP_FLAG_VAD = (1 << 8),
SWITCH_RTP_FLAG_BREAK = ( 1 << 9),
SWITCH_RTP_FLAG_MINI = ( 1 << 10)
} switch_rtp_flag_t;
/*!
\enum switch_priority_t
\brief Priority Indication
<pre>
SWITCH_PRIORITY_NORMAL - Normal Priority
SWITCH_PRIORITY_LOW - Low Priority
SWITCH_PRIORITY_HIGH - High Priority
</pre>
*/
typedef enum {
SWITCH_PRIORITY_NORMAL,
SWITCH_PRIORITY_LOW,
SWITCH_PRIORITY_HIGH,
} switch_priority_t;
/*!
\enum switch_ivr_option_t
\brief Possible options related to ivr functions
<pre>
SWITCH_IVR_OPTION_NONE - nothing whatsoever
SWITCH_IVR_OPTION_ASYNC - Asynchronous (do things in the background when applicable)
SWITCH_IVR_OPTION_FILE - string argument implies a filename
</pre>
*/
typedef enum {
SWITCH_IVR_OPTION_NONE = 0,
SWITCH_IVR_OPTION_ASYNC = (1 << 0),
SWITCH_IVR_OPTION_FILE = (1 << 1)
} switch_ivr_option_t;
/*!
\enum switch_core_session_message_types_t
\brief Possible types of messages for inter-session communication
<pre>
SWITCH_MESSAGE_REDIRECT_AUDIO - Indication to redirect audio to another location if possible
SWITCH_MESSAGE_TRANSMIT_TEXT - A text message
SWITCH_MESSAGE_INDICATE_PROGRESS - indicate progress
SWITCH_MESSAGE_INDICATE_BRIDGE - indicate a bridge starting
SWITCH_MESSAGE_INDICATE_UNBRIDGE - indicate a bridge ending
</pre>
*/
typedef enum {
SWITCH_MESSAGE_REDIRECT_AUDIO,
SWITCH_MESSAGE_TRANSMIT_TEXT,
SWITCH_MESSAGE_INDICATE_PROGRESS,
SWITCH_MESSAGE_INDICATE_BRIDGE,
SWITCH_MESSAGE_INDICATE_UNBRIDGE
} switch_core_session_message_types_t;
/*!
\enum switch_stack_t
\brief Expression of how to stack a list
<pre>
SWITCH_STACK_BOTTOM - Stack on the bottom
SWITCH_STACK_TOP - Stack on the top
</pre>
*/
typedef enum {
SWITCH_STACK_BOTTOM,
SWITCH_STACK_TOP
} switch_stack_t;
/*!
\enum switch_status_t
\brief Common return values
<pre>
SWITCH_STATUS_SUCCESS - General Success (common return value for most functions)
SWITCH_STATUS_FALSE - General Falsehood
SWITCH_STATUS_TIMEOUT - A Timeout has occured
SWITCH_STATUS_RESTART - An indication to restart the previous operation
SWITCH_STATUS_TERM - An indication to terminate
SWITCH_STATUS_NOTIMPL - An indication that requested resource is not impelemented
SWITCH_STATUS_MEMERR - General memory error
SWITCH_STATUS_NOOP - NOTHING
SWITCH_STATUS_RESAMPLE - An indication that a resample has occured
SWITCH_STATUS_GENERR - A general Error
SWITCH_STATUS_INUSE - An indication that requested resource is in use
SWITCH_STATUS_BREAK - A non-fatal break of an operation
SWITCH_STATUS_SOCKERR - A socket error
SWITCH_STATUS_MORE_DATA - Need More Data
SWITCH_STATUS_NOTFOUND - Not Found
</pre>
*/
typedef enum {
SWITCH_STATUS_SUCCESS,
SWITCH_STATUS_FALSE,
SWITCH_STATUS_TIMEOUT,
SWITCH_STATUS_RESTART,
SWITCH_STATUS_TERM,
SWITCH_STATUS_NOTIMPL,
SWITCH_STATUS_MEMERR,
SWITCH_STATUS_NOOP,
SWITCH_STATUS_RESAMPLE,
SWITCH_STATUS_GENERR,
SWITCH_STATUS_INUSE,
SWITCH_STATUS_BREAK,
SWITCH_STATUS_SOCKERR,
SWITCH_STATUS_MORE_DATA,
SWITCH_STATUS_NOTFOUND
} switch_status_t;
/*!
\enum switch_log_level_t
\brief Log Level Enumeration
<pre>
SWITCH_LOG_CONSOLE - Console
SWITCH_LOG_DEBUG - Debug
SWITCH_LOG_INFO - Info
SWITCH_LOG_NOTICE - Notice
SWITCH_LOG_WARNING - Warning
SWITCH_LOG_ERROR - Error
SWITCH_LOG_CRIT - Critical
SWITCH_LOG_ALERT - Alert
SWITCH_LOG_EMERG - Emergency
</pre>
*/
typedef enum {
SWITCH_LOG_CONSOLE = 8,
SWITCH_LOG_DEBUG = 7,
SWITCH_LOG_INFO = 6,
SWITCH_LOG_NOTICE = 5,
SWITCH_LOG_WARNING = 4,
SWITCH_LOG_ERROR = 3,
SWITCH_LOG_CRIT = 2,
SWITCH_LOG_ALERT = 1,
SWITCH_LOG_EMERG = 0
} switch_log_level_t;
/*!
\enum switch_text_channel_t
\brief A target to write log/debug info to
<pre>
SWITCH_CHANNEL_ID_LOG - Write to the currently defined log
SWITCH_CHANNEL_ID_LOG_CLEAN - Write to the currently defined log with no extra file/line/date information
SWITCH_CHANNEL_ID_EVENT - Write to the event engine as a LOG event
</pre>
*/
typedef enum {
SWITCH_CHANNEL_ID_LOG,
SWITCH_CHANNEL_ID_LOG_CLEAN,
SWITCH_CHANNEL_ID_EVENT
} switch_text_channel_t;
#define SWITCH_UUID_FORMATTED_LENGTH APR_UUID_FORMATTED_LENGTH
#define SWITCH_CHANNEL_LOG SWITCH_CHANNEL_ID_LOG, __FILE__, __FUNCTION__, __LINE__
#define SWITCH_CHANNEL_LOG_CLEAN SWITCH_CHANNEL_ID_LOG_CLEAN, __FILE__, __FUNCTION__, __LINE__
#define SWITCH_CHANNEL_EVENT SWITCH_CHANNEL_ID_EVENT, __FILE__, __FUNCTION__, __LINE__
/*!
\enum switch_channel_state_t
\brief Channel States
<pre>
CS_NEW - Channel is newly created
CS_INIT - Channel has been initilized
CS_RING - Channel is looking for a dialplan
CS_TRANSMIT - Channel is in a passive transmit state
CS_EXECUTE - Channel is executing it's dialplan
CS_LOOPBACK - Channel is in loopback
CS_HOLD - Channel is on hold
CS_HANGUP - Channel is flagged for hangup and ready to end
CS_DONE - Channel is ready to be destroyed and out of the state machine
</pre>
*/
typedef enum {
CS_NEW,
CS_INIT,
CS_RING,
CS_TRANSMIT,
CS_EXECUTE,
CS_LOOPBACK,
CS_HOLD,
CS_HANGUP,
CS_DONE
} switch_channel_state_t;
/*!
\enum switch_channel_flag_t
\brief Channel Flags
<pre>
CF_ANSWERED = (1 << 0) - Channel is answered
CF_OUTBOUND = (1 << 1) - Channel is an outbound channel
CF_EARLY_MEDIA = (1 << 2) - Channel is ready for audio before answer
CF_ORIGINATOR = (1 << 3) - Channel is an originator
CF_TRANSFER = (1 << 4) - Channel is being transfered
CF_ACCEPT_CNG = (1 << 5) - Channel will accept CNG frames
CF_LOCK_THREAD = (1 << 6) - Prevent the channel thread from exiting while this flag is set
CF_BRIDGED = (1 << 7) - Channel in a bridge
CF_HOLD = (1 << 8) - Channel is on hold
CF_SERVICE = (1 << 9) - Channel has a service thread
</pre>
*/
typedef enum {
CF_ANSWERED = (1 << 0),
CF_OUTBOUND = (1 << 1),
CF_EARLY_MEDIA = (1 << 2),
CF_ORIGINATOR = (1 << 3),
CF_TRANSFER = (1 << 4),
CF_ACCEPT_CNG = (1 << 5),
CF_LOCK_THREAD = (1 << 6),
CF_BRIDGED = (1 << 7),
CF_HOLD = (1 << 8),
CF_SERVICE = (1 << 9)
} switch_channel_flag_t;
/*!
\enum switch_frame_flag_t
\brief Frame Flags
<pre>
SFF_CNG = (1 << 0) - Frame represents comfort noise
SFF_RAW_RTP = (1 << 1) - Frame has raw rtp accessible
</pre>
*/
typedef enum {
SFF_NONE = 0,
SFF_CNG = (1 << 0),
SFF_RAW_RTP = (1 << 1)
} switch_frame_flag_t;
/*!
\enum switch_signal_t
\brief Signals to send to channels
<pre>
SWITCH_SIG_KILL - Kill the channel
SWITCH_SIG_XFER - Stop the current io but leave it viable
</pre>
*/
typedef enum {
SWITCH_SIG_NONE,
SWITCH_SIG_KILL,
SWITCH_SIG_XFER
} switch_signal_t;
/*!
\enum switch_codec_flag_t
\brief Codec related flags
<pre>
SWITCH_CODEC_FLAG_ENCODE = (1 << 0) - Codec can encode
SWITCH_CODEC_FLAG_DECODE = (1 << 1) - Codec can decode
SWITCH_CODEC_FLAG_SILENCE_START = (1 << 2) - Start period of silence
SWITCH_CODEC_FLAG_SILENCE_STOP = (1 << 3) - End period of silence
SWITCH_CODEC_FLAG_SILENCE = (1 << 4) - Silence
SWITCH_CODEC_FLAG_FREE_POOL = (1 << 5) - Free codec's pool on destruction
</pre>
*/
typedef enum {
SWITCH_CODEC_FLAG_ENCODE = (1 << 0),
SWITCH_CODEC_FLAG_DECODE = (1 << 1),
SWITCH_CODEC_FLAG_SILENCE_START = (1 << 2),
SWITCH_CODEC_FLAG_SILENCE_STOP = (1 << 3),
SWITCH_CODEC_FLAG_SILENCE = (1 << 4),
SWITCH_CODEC_FLAG_FREE_POOL = (1 << 5),
} switch_codec_flag_t;
/*!
\enum switch_speech_flag_t
\brief Speech related flags
<pre>
SWITCH_SPEECH_FLAG_TTS = (1 << 0) - Interface can/should convert text to speech.
SWITCH_SPEECH_FLAG_ASR = (1 << 1) - Interface can/should convert audio to text.
SWITCH_SPEECH_FLAG_HASTEXT = (1 << 2) - Interface is has text to read.
SWITCH_SPEECH_FLAG_PEEK = (1 << 3) - Read data but do not erase it.
SWITCH_SPEECH_FLAG_FREE_POOL = (1 << 4) - Free interface's pool on destruction.
SWITCH_SPEECH_FLAG_BLOCKING = (1 << 5) - Indicate that a blocking call is desired
SWITCH_SPEECH_FLAG_PAUSE = (1 << 6) - Pause toggle for playback
</pre>
*/
typedef enum {
SWITCH_SPEECH_FLAG_TTS = (1 << 0),
SWITCH_SPEECH_FLAG_ASR = (1 << 1),
SWITCH_SPEECH_FLAG_HASTEXT = (1 << 2),
SWITCH_SPEECH_FLAG_PEEK = (1 << 3),
SWITCH_SPEECH_FLAG_FREE_POOL = (1 << 4),
SWITCH_SPEECH_FLAG_BLOCKING = (1 << 5),
SWITCH_SPEECH_FLAG_PAUSE = (1 << 6)
} switch_speech_flag_t;
/*!
\enum switch_directory_flag_t
\brief Directory Handle related flags
<pre>
SWITCH_DIRECTORY_FLAG_FREE_POOL = (1 << 0) - Free interface's pool on destruction.
</pre>
*/
typedef enum {
SWITCH_DIRECTORY_FLAG_FREE_POOL = (1 << 0),
} switch_directory_flag_t;
/*!
\enum switch_codec_type_t
\brief Codec types
<pre>
SWITCH_CODEC_TYPE_AUDIO - Audio Codec
SWITCH_CODEC_TYPE_VIDEO - Video Codec
SWITCH_CODEC_TYPE_T38 - T38 Codec
SWITCH_CODEC_TYPE_APP - Application Codec
</pre>
*/
typedef enum {
SWITCH_CODEC_TYPE_AUDIO,
SWITCH_CODEC_TYPE_VIDEO,
SWITCH_CODEC_TYPE_T38,
SWITCH_CODEC_TYPE_APP
} switch_codec_type_t;
/*!
\enum switch_timer_flag_t
\brief Timer related flags
<pre>
SWITCH_TIMER_FLAG_FREE_POOL = (1 << 0) - Free timer's pool on destruction
</pre>
*/
typedef enum {
SWITCH_TIMER_FLAG_FREE_POOL = (1 << 0),
} switch_timer_flag_t;
/*!
\enum switch_file_flag_t
\brief File flags
<pre>
SWITCH_FILE_FLAG_READ = (1 << 0) - Open for read
SWITCH_FILE_FLAG_WRITE = (1 << 1) - Open for write
SWITCH_FILE_FLAG_FREE_POOL = (1 << 2) - Free file handle's pool on destruction
SWITCH_FILE_DATA_SHORT = (1 << 3) - Read data in shorts
SWITCH_FILE_DATA_INT = (1 << 4) - Read data in ints
SWITCH_FILE_DATA_FLOAT = (1 << 5) - Read data in floats
SWITCH_FILE_DATA_DOUBLE = (1 << 6) - Read data in doubles
SWITCH_FILE_DATA_RAW = (1 << 7) - Read data as is
SWITCH_FILE_PAUSE = (1 << 8) - Pause
</pre>
*/
typedef enum {
SWITCH_FILE_FLAG_READ = (1 << 0),
SWITCH_FILE_FLAG_WRITE = (1 << 1),
SWITCH_FILE_FLAG_FREE_POOL = (1 << 2),
SWITCH_FILE_DATA_SHORT = (1 << 3),
SWITCH_FILE_DATA_INT = (1 << 4),
SWITCH_FILE_DATA_FLOAT = (1 << 5),
SWITCH_FILE_DATA_DOUBLE = (1 << 6),
SWITCH_FILE_DATA_RAW = (1 << 7),
SWITCH_FILE_PAUSE = (1 << 8)
} switch_file_flag_t;
typedef enum {
SWITCH_IO_FLAG_NOOP = 0,
} switch_io_flag_t;
/* make sure this is synced with the EVENT_NAMES array in switch_event.c
also never put any new ones before EVENT_ALL
*/
/*!
\enum switch_event_types_t
\brief Built-in Events
<pre>
SWITCH_EVENT_CUSTOM - A custom event
SWITCH_EVENT_CHANNEL_CREATE - A channel has been created
SWITCH_EVENT_CHANNEL_DESTROY - A channel has been destroyed
SWITCH_EVENT_CHANNEL_STATE - A channel has changed state
SWITCH_EVENT_CHANNEL_ANSWER - A channel has been answered
SWITCH_EVENT_CHANNEL_HANGUP - A channel has been hungup
SWITCH_EVENT_CHANNEL_EXECUTE - A channel has executed a module's application
SWITCH_EVENT_CHANNEL_BRIDGE - A channel has bridged to another channel
SWITCH_EVENT_CHANNEL_UNBRIDGE - A channel has unbridged from another channel
SWITCH_EVENT_API - An API call has been executed
SWITCH_EVENT_LOG - A LOG event has been triggered
SWITCH_EVENT_INBOUND_CHAN - A new inbound channel has been created
SWITCH_EVENT_OUTBOUND_CHAN - A new outbound channel has been created
SWITCH_EVENT_STARTUP - The system has been started
SWITCH_EVENT_SHUTDOWN - The system has been shutdown
SWITCH_EVENT_PUBLISH - Publish
SWITCH_EVENT_UNPUBLISH - UnPublish
SWITCH_EVENT_TALK - Talking Detected
SWITCH_EVENT_NOTALK - Not Talking Detected
SWITCH_EVENT_SESSION_CRASH - Session Crashed
SWITCH_EVENT_MODULE_LOAD - Module was loaded
SWITCH_EVENT_DTMF - DTMF was sent
SWITCH_EVENT_ALL - All events at once
</pre>
*/
typedef enum {
SWITCH_EVENT_CUSTOM,
SWITCH_EVENT_CHANNEL_CREATE,
SWITCH_EVENT_CHANNEL_DESTROY,
SWITCH_EVENT_CHANNEL_STATE,
SWITCH_EVENT_CHANNEL_ANSWER,
SWITCH_EVENT_CHANNEL_HANGUP,
SWITCH_EVENT_CHANNEL_EXECUTE,
SWITCH_EVENT_CHANNEL_BRIDGE,
SWITCH_EVENT_CHANNEL_UNBRIDGE,
SWITCH_EVENT_API,
SWITCH_EVENT_LOG,
SWITCH_EVENT_INBOUND_CHAN,
SWITCH_EVENT_OUTBOUND_CHAN,
SWITCH_EVENT_STARTUP,
SWITCH_EVENT_SHUTDOWN,
SWITCH_EVENT_PUBLISH,
SWITCH_EVENT_UNPUBLISH,
SWITCH_EVENT_TALK,
SWITCH_EVENT_NOTALK,
SWITCH_EVENT_SESSION_CRASH,
SWITCH_EVENT_MODULE_LOAD,
SWITCH_EVENT_DTMF,
SWITCH_EVENT_ALL
} switch_event_types_t;
typedef enum {
SWITCH_CAUSE_UNALLOCATED = 1,
SWITCH_CAUSE_NO_ROUTE_TRANSIT_NET = 2,
SWITCH_CAUSE_NO_ROUTE_DESTINATION = 3,
SWITCH_CAUSE_CHANNEL_UNACCEPTABLE = 6,
SWITCH_CAUSE_CALL_AWARDED_DELIVERED = 7,
SWITCH_CAUSE_NORMAL_CLEARING = 16,
SWITCH_CAUSE_USER_BUSY = 17,
SWITCH_CAUSE_NO_USER_RESPONSE = 18,
SWITCH_CAUSE_NO_ANSWER = 19,
SWITCH_CAUSE_CALL_REJECTED = 21,
SWITCH_CAUSE_NUMBER_CHANGED = 22,
SWITCH_CAUSE_DESTINATION_OUT_OF_ORDER = 27,
SWITCH_CAUSE_INVALID_NUMBER_FORMAT = 28,
SWITCH_CAUSE_FACILITY_REJECTED = 29,
SWITCH_CAUSE_RESPONSE_TO_STATUS_ENQUIRY = 30,
SWITCH_CAUSE_NORMAL_UNSPECIFIED = 31,
SWITCH_CAUSE_NORMAL_CIRCUIT_CONGESTION = 34,
SWITCH_CAUSE_NETWORK_OUT_OF_ORDER = 38,
SWITCH_CAUSE_NORMAL_TEMPORARY_FAILURE = 41,
SWITCH_CAUSE_SWITCH_CONGESTION = 42,
SWITCH_CAUSE_ACCESS_INFO_DISCARDED = 43,
SWITCH_CAUSE_REQUESTED_CHAN_UNAVAIL = 44,
SWITCH_CAUSE_PRE_EMPTED = 45,
SWITCH_CAUSE_FACILITY_NOT_SUBSCRIBED = 50,
SWITCH_CAUSE_OUTGOING_CALL_BARRED = 52,
SWITCH_CAUSE_INCOMING_CALL_BARRED = 54,
SWITCH_CAUSE_BEARERCAPABILITY_NOTAUTH = 57,
SWITCH_CAUSE_BEARERCAPABILITY_NOTAVAIL = 58,
SWITCH_CAUSE_BEARERCAPABILITY_NOTIMPL = 65,
SWITCH_CAUSE_CHAN_NOT_IMPLEMENTED = 66,
SWITCH_CAUSE_FACILITY_NOT_IMPLEMENTED = 69,
SWITCH_CAUSE_INVALID_CALL_REFERENCE = 81,
SWITCH_CAUSE_INCOMPATIBLE_DESTINATION = 88,
SWITCH_CAUSE_INVALID_MSG_UNSPECIFIED = 95,
SWITCH_CAUSE_MANDATORY_IE_MISSING = 96,
SWITCH_CAUSE_MESSAGE_TYPE_NONEXIST = 97,
SWITCH_CAUSE_WRONG_MESSAGE = 98,
SWITCH_CAUSE_IE_NONEXIST = 99,
SWITCH_CAUSE_INVALID_IE_CONTENTS = 100,
SWITCH_CAUSE_WRONG_CALL_STATE = 101,
SWITCH_CAUSE_RECOVERY_ON_TIMER_EXPIRE = 102,
SWITCH_CAUSE_MANDATORY_IE_LENGTH_ERROR = 103,
SWITCH_CAUSE_PROTOCOL_ERROR = 111,
SWITCH_CAUSE_INTERWORKING = 127,
SWITCH_CAUSE_CRASH = 500,
SWITCH_CAUSE_SYSTEM_SHUTDOWN = 501
} switch_call_cause_t;
typedef uint8_t switch_payload_t;
typedef struct switch_rtp switch_rtp_t;
typedef struct switch_core_session_message switch_core_session_message_t;
typedef struct switch_event_header switch_event_header_t;
typedef struct switch_event switch_event_t;
typedef struct switch_event_subclass switch_event_subclass_t;
typedef struct switch_event_node switch_event_node_t;
typedef struct switch_loadable_module switch_loadable_module_t;
typedef struct switch_frame switch_frame_t;
typedef struct switch_channel switch_channel_t;
typedef struct switch_file_handle switch_file_handle_t;
typedef struct switch_core_session switch_core_session_t;
typedef struct switch_caller_profile switch_caller_profile_t;
typedef struct switch_caller_extension switch_caller_extension_t;
typedef struct switch_caller_application switch_caller_application_t;
typedef struct switch_state_handler_table switch_state_handler_table_t;
typedef struct switch_timer switch_timer_t;
typedef struct switch_codec switch_codec_t;
typedef struct switch_core_thread_session switch_core_thread_session_t;
typedef struct switch_codec_implementation switch_codec_implementation_t;
typedef struct switch_buffer switch_buffer_t;
typedef struct switch_codec_settings switch_codec_settings_t;
typedef struct switch_config switch_config_t;
typedef struct switch_io_event_hook_outgoing_channel switch_io_event_hook_outgoing_channel_t;
typedef struct switch_io_event_hook_answer_channel switch_io_event_hook_answer_channel_t;
typedef struct switch_io_event_hook_receive_message switch_io_event_hook_receive_message_t;
typedef struct switch_io_event_hook_queue_event switch_io_event_hook_queue_event_t;
typedef struct switch_io_event_hook_read_frame switch_io_event_hook_read_frame_t;
typedef struct switch_io_event_hook_write_frame switch_io_event_hook_write_frame_t;
typedef struct switch_io_event_hook_kill_channel switch_io_event_hook_kill_channel_t;
typedef struct switch_io_event_hook_waitfor_read switch_io_event_hook_waitfor_read_t;
typedef struct switch_io_event_hook_waitfor_write switch_io_event_hook_waitfor_write_t;
typedef struct switch_io_event_hook_send_dtmf switch_io_event_hook_send_dtmf_t;
typedef struct switch_io_routines switch_io_routines_t;
typedef struct switch_io_event_hooks switch_io_event_hooks_t;
typedef struct switch_speech_handle switch_speech_handle_t;
typedef struct switch_directory_handle switch_directory_handle_t;
typedef struct switch_loadable_module_interface switch_loadable_module_interface_t;
typedef struct switch_endpoint_interface switch_endpoint_interface_t;
typedef struct switch_timer_interface switch_timer_interface_t;
typedef struct switch_dialplan_interface switch_dialplan_interface_t;
typedef struct switch_codec_interface switch_codec_interface_t;
typedef struct switch_application_interface switch_application_interface_t;
typedef struct switch_api_interface switch_api_interface_t;
typedef struct switch_file_interface switch_file_interface_t;
typedef struct switch_speech_interface switch_speech_interface_t;
typedef struct switch_directory_interface switch_directory_interface_t;
typedef void (*switch_application_function_t)(switch_core_session_t *, char *);
typedef void (*switch_event_callback_t)(switch_event_t *);
typedef switch_caller_extension_t *(*switch_dialplan_hunt_function_t)(switch_core_session_t *);
typedef switch_status_t (*switch_state_handler_t)(switch_core_session_t *);
typedef switch_status_t (*switch_outgoing_channel_hook_t)(switch_core_session_t *, switch_caller_profile_t *, switch_core_session_t *);
typedef switch_status_t (*switch_answer_channel_hook_t)(switch_core_session_t *);
typedef switch_status_t (*switch_receive_message_hook_t)(switch_core_session_t *, switch_core_session_message_t *);
typedef switch_status_t (*switch_queue_event_hook_t)(switch_core_session_t *, switch_event_t *);
typedef switch_status_t (*switch_read_frame_hook_t)(switch_core_session_t *, switch_frame_t **, int, switch_io_flag_t, int);
typedef switch_status_t (*switch_write_frame_hook_t)(switch_core_session_t *, switch_frame_t *, int, switch_io_flag_t, int);
typedef switch_status_t (*switch_kill_channel_hook_t)(switch_core_session_t *, int);
typedef switch_status_t (*switch_waitfor_read_hook_t)(switch_core_session_t *, int, int);
typedef switch_status_t (*switch_waitfor_write_hook_t)(switch_core_session_t *, int, int);
typedef switch_status_t (*switch_send_dtmf_hook_t)(switch_core_session_t *, char *);
typedef struct switch_stream_handle switch_stream_handle_t;
typedef switch_status_t (*switch_stream_handle_write_function_t)(switch_stream_handle_t *handle, char *fmt, ...);
typedef switch_status_t (*switch_api_function_t)(char *in, switch_stream_handle_t *stream);
typedef switch_status_t (*switch_dtmf_callback_function_t)(switch_core_session_t *session, char *dtmf, void *buf, unsigned int buflen);
typedef int (*switch_core_db_callback_func_t)(void *pArg, int argc, char **argv, char **columnNames);
typedef switch_status_t (*switch_module_load_t) (switch_loadable_module_interface_t **, char *);
typedef switch_status_t (*switch_module_reload_t) (void);
typedef switch_status_t (*switch_module_pause_t) (void);
typedef switch_status_t (*switch_module_resume_t) (void);
typedef switch_status_t (*switch_module_status_t) (void);
typedef switch_status_t (*switch_module_runtime_t) (void);
typedef switch_status_t (*switch_module_shutdown_t) (void);
typedef struct switch_xml *switch_xml_t;
typedef struct switch_core_time_duration switch_core_time_duration_t;
typedef switch_xml_t (*switch_xml_search_function_t)(char *section,
char *tag_name,
char *key_name,
char *key_value,
char *params);
/* things we don't deserve to know about */
/*! \brief A channel */
struct switch_channel;
/*! \brief A core session representing a call and all of it's resources */
struct switch_core_session;
END_EXTERN_C
#endif