bridge_features.h File Reference

Channel Bridging API. More...

#include "asterisk/channel.h"

Include dependency graph for bridge_features.h:

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Data Structures
struct	ast_bridge_features
	Structure that contains features information. More...
struct	ast_bridge_features_attended_transfer
	Structure that contains configuration information for the attended transfer built in feature. More...
struct	ast_bridge_features_automixmonitor
struct	ast_bridge_features_blind_transfer
	Structure that contains configuration information for the blind transfer built in feature. More...
struct	ast_bridge_features_limits
	Structure that contains configuration information for the limits feature. More...
struct	ast_bridge_hook
	Structure that is the essence of a feature hook. More...
struct	ast_bridge_hook_dtmf
struct	ast_bridge_hook_dtmf_parms
struct	ast_bridge_hook_timer
struct	ast_bridge_hook_timer_parms

Macros
#define	MAXIMUM_DTMF_FEATURE_STRING   (11 + 1)
	Maximum length of a DTMF feature string.

Typedefs
typedef int(*	ast_bridge_builtin_set_limits_fn) (struct ast_bridge_features *features, struct ast_bridge_features_limits *limits, enum ast_bridge_hook_remove_flags remove_flags)
	Attach interval hooks to a bridge features structure.
typedef int(*	ast_bridge_hook_callback) (struct ast_bridge_channel *bridge_channel, void *hook_pvt)
	Hook callback type.
typedef void(*	ast_bridge_hook_pvt_destructor) (void *hook_pvt)
	Hook pvt destructor callback.
typedef int(*	ast_bridge_move_indicate_callback) (struct ast_bridge_channel *bridge_channel, void *hook_pvt, struct ast_bridge *src, struct ast_bridge *dst)
	Move indicator callback.
typedef int(*	ast_bridge_talking_indicate_callback) (struct ast_bridge_channel *bridge_channel, void *hook_pvt, int talking)
	Talking indicator callback.

Enumerations
enum	ast_bridge_builtin_feature {   AST_BRIDGE_BUILTIN_BLINDTRANSFER , AST_BRIDGE_BUILTIN_ATTENDEDTRANSFER , AST_BRIDGE_BUILTIN_HANGUP , AST_BRIDGE_BUILTIN_PARKCALL ,   AST_BRIDGE_BUILTIN_AUTOMIXMON , AST_BRIDGE_BUILTIN_END }
	Built in DTMF features. More...
enum	ast_bridge_builtin_interval { AST_BRIDGE_BUILTIN_INTERVAL_LIMITS , AST_BRIDGE_BUILTIN_INTERVAL_END }
enum	ast_bridge_channel_feature_flags { AST_BRIDGE_CHANNEL_FLAG_DISSOLVE_HANGUP = (1 << 0) , AST_BRIDGE_CHANNEL_FLAG_LONELY = (1 << 1) , AST_BRIDGE_CHANNEL_FLAG_IMMOVABLE = (1 << 2) }
	Flags used for per bridge channel features. More...
enum	ast_bridge_feature_flags {   AST_BRIDGE_FLAG_DISSOLVE_HANGUP = (1 << 0) , AST_BRIDGE_FLAG_DISSOLVE_EMPTY = (1 << 1) , AST_BRIDGE_FLAG_SMART = (1 << 2) , AST_BRIDGE_FLAG_MERGE_INHIBIT_FROM = (1 << 3) ,   AST_BRIDGE_FLAG_MERGE_INHIBIT_TO = (1 << 4) , AST_BRIDGE_FLAG_SWAP_INHIBIT_FROM = (1 << 5) , AST_BRIDGE_FLAG_SWAP_INHIBIT_TO = (1 << 6) , AST_BRIDGE_FLAG_MASQUERADE_ONLY = (1 << 7) ,   AST_BRIDGE_FLAG_TRANSFER_PROHIBITED = (1 << 8) , AST_BRIDGE_FLAG_TRANSFER_BRIDGE_ONLY = (1 << 9) , AST_BRIDGE_FLAG_INVISIBLE = (1 << 10) }
	Flags used for bridge features. More...
enum	ast_bridge_features_monitor { AUTO_MONITOR_TOGGLE , AUTO_MONITOR_START , AUTO_MONITOR_STOP }
enum	ast_bridge_hook_remove_flags { AST_BRIDGE_HOOK_REMOVE_ON_PULL = (1 << 0) , AST_BRIDGE_HOOK_REMOVE_ON_PERSONALITY_CHANGE = (1 << 1) }
enum	ast_bridge_hook_timer_option { AST_BRIDGE_HOOK_TIMER_OPTION_MEDIA = (1 << 0) }
enum	ast_bridge_hook_type {   AST_BRIDGE_HOOK_TYPE_NONE , AST_BRIDGE_HOOK_TYPE_DTMF , AST_BRIDGE_HOOK_TYPE_TIMER , AST_BRIDGE_HOOK_TYPE_HANGUP ,   AST_BRIDGE_HOOK_TYPE_JOIN , AST_BRIDGE_HOOK_TYPE_LEAVE , AST_BRIDGE_HOOK_TYPE_TALK , AST_BRIDGE_HOOK_TYPE_MOVE }

Functions
int	ast_bridge_dtmf_hook (struct ast_bridge_features *features, const char *dtmf, ast_bridge_hook_callback callback, void *hook_pvt, ast_bridge_hook_pvt_destructor destructor, enum ast_bridge_hook_remove_flags remove_flags)
	Attach a DTMF hook to a bridge features structure.
void	ast_bridge_features_cleanup (struct ast_bridge_features *features)
	Clean up the contents of a bridge features structure.
void	ast_bridge_features_destroy (struct ast_bridge_features *features)
	Destroy an allocated bridge features struct.
int	ast_bridge_features_do (enum ast_bridge_builtin_feature feature, struct ast_bridge_channel *bridge_channel, void *hook_pvt)
	Invoke a built in feature hook now.
int	ast_bridge_features_enable (struct ast_bridge_features *features, enum ast_bridge_builtin_feature feature, const char *dtmf, void *config, ast_bridge_hook_pvt_destructor destructor, enum ast_bridge_hook_remove_flags remove_flags)
	Enable a built in feature on a bridge features structure.
int	ast_bridge_features_init (struct ast_bridge_features *features)
	Initialize bridge features structure.
int	ast_bridge_features_limits_construct (struct ast_bridge_features_limits *limits)
	Constructor function for ast_bridge_features_limits.
void	ast_bridge_features_limits_destroy (struct ast_bridge_features_limits *limits)
	Destructor function for ast_bridge_features_limits.
void	ast_bridge_features_merge (struct ast_bridge_features *into, const struct ast_bridge_features *from)
	Merge one ast_bridge_features into another.
struct ast_bridge_features *	ast_bridge_features_new (void)
	Allocate a new bridge features struct.
int	ast_bridge_features_register (enum ast_bridge_builtin_feature feature, ast_bridge_hook_callback callback, const char *dtmf)
	Register a handler for a built in feature.
void	ast_bridge_features_set_flag (struct ast_bridge_features *features, unsigned int flag)
	Set a flag on a bridge channel features structure.
int	ast_bridge_features_set_limits (struct ast_bridge_features *features, struct ast_bridge_features_limits *limits, enum ast_bridge_hook_remove_flags remove_flags)
	Limit the amount of time a channel may stay in the bridge and optionally play warning messages as time runs out.
int	ast_bridge_features_unregister (enum ast_bridge_builtin_feature feature)
	Unregister a handler for a built in feature.
int	ast_bridge_hangup_hook (struct ast_bridge_features *features, ast_bridge_hook_callback callback, void *hook_pvt, ast_bridge_hook_pvt_destructor destructor, enum ast_bridge_hook_remove_flags remove_flags)
	Attach a hangup hook to a bridge features structure.
int	ast_bridge_interval_hook (struct ast_bridge_features *features, enum ast_bridge_hook_timer_option flags, unsigned int interval, ast_bridge_hook_callback callback, void *hook_pvt, ast_bridge_hook_pvt_destructor destructor, enum ast_bridge_hook_remove_flags remove_flags)
	Attach an interval hook to a bridge features structure.
int	ast_bridge_interval_register (enum ast_bridge_builtin_interval interval, ast_bridge_builtin_set_limits_fn callback)
	Register a handler for a built in interval feature.
int	ast_bridge_interval_unregister (enum ast_bridge_builtin_interval interval)
	Unregisters a handler for a built in interval feature.
int	ast_bridge_join_hook (struct ast_bridge_features *features, ast_bridge_hook_callback callback, void *hook_pvt, ast_bridge_hook_pvt_destructor destructor, enum ast_bridge_hook_remove_flags remove_flags)
	Attach a bridge channel join hook to a bridge features structure.
int	ast_bridge_leave_hook (struct ast_bridge_features *features, ast_bridge_hook_callback callback, void *hook_pvt, ast_bridge_hook_pvt_destructor destructor, enum ast_bridge_hook_remove_flags remove_flags)
	Attach a bridge channel leave hook to a bridge features structure.
int	ast_bridge_move_hook (struct ast_bridge_features *features, ast_bridge_move_indicate_callback callback, void *hook_pvt, ast_bridge_hook_pvt_destructor destructor, enum ast_bridge_hook_remove_flags remove_flags)
	Attach a bridge channel move detection hook to a bridge features structure.
int	ast_bridge_talk_detector_hook (struct ast_bridge_features *features, ast_bridge_talking_indicate_callback callback, void *hook_pvt, ast_bridge_hook_pvt_destructor destructor, enum ast_bridge_hook_remove_flags remove_flags)
	Attach a bridge channel talk detection hook to a bridge features structure.

Detailed Description

Channel Bridging API.

Author

Joshua Colp jcolp.nosp@m.@dig.nosp@m.ium.c.nosp@m.om

Definition in file bridge_features.h.

Macro Definition Documentation

MAXIMUM_DTMF_FEATURE_STRING

#define MAXIMUM_DTMF_FEATURE_STRING   (11 + 1)

Maximum length of a DTMF feature string.

Definition at line 208 of file bridge_features.h.

Typedef Documentation

ast_bridge_builtin_set_limits_fn

typedef int(* ast_bridge_builtin_set_limits_fn) (struct ast_bridge_features *features, struct ast_bridge_features_limits *limits, enum ast_bridge_hook_remove_flags remove_flags)

Attach interval hooks to a bridge features structure.

Parameters

features	Bridge features structure
limits	Configured limits applicable to the channel
remove_flags	Dictates what situations the hook should be removed.

Return values

0	on success
-1	on failure

Definition at line 408 of file bridge_features.h.

ast_bridge_hook_callback

typedef int(* ast_bridge_hook_callback) (struct ast_bridge_channel *bridge_channel, void *hook_pvt)

Hook callback type.

Parameters

bridge_channel	Channel executing the feature
hook_pvt	Private data passed in when the hook was created

Return values

0	for interval hooks: setup to fire again at the last interval. for other hooks: keep the callback hook.
positive	for interval hooks: Setup to fire again at the new interval returned. for other hooks: n/a
-1	for all hooks: remove the callback hook.

Definition at line 127 of file bridge_features.h.

ast_bridge_hook_pvt_destructor

typedef void(* ast_bridge_hook_pvt_destructor) (void *hook_pvt)

Hook pvt destructor callback.

Parameters

hook_pvt

Private data passed in when the hook was created to destroy

Definition at line 134 of file bridge_features.h.

ast_bridge_move_indicate_callback

typedef int(* ast_bridge_move_indicate_callback) (struct ast_bridge_channel *bridge_channel, void *hook_pvt, struct ast_bridge *src, struct ast_bridge *dst)

Move indicator callback.

This callback can be registered with the bridge channel in order to be notified when the bridge channel is being moved from one bridge to another.

Parameters

bridge_channel	The channel executing the feature
hook_pvt	Private data passed in when the hook was created
src	The bridge from which the bridge channel is moving
dst	The bridge into which the bridge channel is moving

Return values

0	Keep the callback hook.
-1	Remove the callback hook.

Definition at line 169 of file bridge_features.h.

ast_bridge_talking_indicate_callback

typedef int(* ast_bridge_talking_indicate_callback) (struct ast_bridge_channel *bridge_channel, void *hook_pvt, int talking)

Talking indicator callback.

This callback can be registered with the bridge channel in order to receive updates when the bridge_channel has started and stopped talking.

Parameters

bridge_channel	Channel executing the feature
hook_pvt	Private data passed in when the hook was created
talking	TRUE if the channel is now talking

Return values

0	Keep the callback hook.
-1	Remove the callback hook.

Definition at line 151 of file bridge_features.h.

Enumeration Type Documentation

ast_bridge_builtin_feature

enum ast_bridge_builtin_feature

Built in DTMF features.

Enumerator
AST_BRIDGE_BUILTIN_BLINDTRANSFER	DTMF based Blind Transfer
AST_BRIDGE_BUILTIN_ATTENDEDTRANSFER	DTMF based Attended Transfer
AST_BRIDGE_BUILTIN_HANGUP	DTMF based depart bridge feature Note Imparted channels are optionally hangup depending upon how it was imparted. Joined channels exit the bridge with BRIDGE_CHANNEL_STATE_END_WITH_DISSOLVE.
AST_BRIDGE_BUILTIN_PARKCALL	DTMF based Park The bridge is parked and the channel hears the parking slot to which it was parked.
AST_BRIDGE_BUILTIN_AUTOMIXMON	DTMF one-touch-record toggle using MixMonitor app. Note Only valid on two party bridges.
AST_BRIDGE_BUILTIN_END	End terminator for list of built in features. Must remain last.

Definition at line 71 of file bridge_features.h.

                                {
    /*! DTMF based Blind Transfer */
    AST_BRIDGE_BUILTIN_BLINDTRANSFER,
    /*! DTMF based Attended Transfer */
    AST_BRIDGE_BUILTIN_ATTENDEDTRANSFER,
    /*!
     * DTMF based depart bridge feature
     *
     * \note Imparted channels are optionally hangup depending upon
     * how it was imparted.
     *
     * \note Joined channels exit the bridge with
     * BRIDGE_CHANNEL_STATE_END_WITH_DISSOLVE.
     */
    AST_BRIDGE_BUILTIN_HANGUP,
    /*!
     * DTMF based Park
     *
     * \details The bridge is parked and the channel hears the
     * parking slot to which it was parked.
     */
    AST_BRIDGE_BUILTIN_PARKCALL,
    /*!
     * DTMF one-touch-record toggle using MixMonitor app.
     *
     * \note Only valid on two party bridges.
     */
    AST_BRIDGE_BUILTIN_AUTOMIXMON,
 
    /*! End terminator for list of built in features. Must remain last. */
    AST_BRIDGE_BUILTIN_END
};

ast_bridge_builtin_interval

enum ast_bridge_builtin_interval

Enumerator
AST_BRIDGE_BUILTIN_INTERVAL_LIMITS	Apply Call Duration Limits
AST_BRIDGE_BUILTIN_INTERVAL_END	End terminator for list of built in interval features. Must remain last.

Definition at line 104 of file bridge_features.h.

                                 {
    /*! Apply Call Duration Limits */
    AST_BRIDGE_BUILTIN_INTERVAL_LIMITS,
 
    /*! End terminator for list of built in interval features. Must remain last. */
    AST_BRIDGE_BUILTIN_INTERVAL_END
};

ast_bridge_channel_feature_flags

enum ast_bridge_channel_feature_flags

Flags used for per bridge channel features.

Enumerator
AST_BRIDGE_CHANNEL_FLAG_DISSOLVE_HANGUP	Upon channel hangup all bridge participants should be kicked out.
AST_BRIDGE_CHANNEL_FLAG_LONELY	This channel leaves the bridge if all participants have this flag set.
AST_BRIDGE_CHANNEL_FLAG_IMMOVABLE	This channel cannot be moved to another bridge.

Definition at line 61 of file bridge_features.h.

                                      {
    /*! Upon channel hangup all bridge participants should be kicked out. */
    AST_BRIDGE_CHANNEL_FLAG_DISSOLVE_HANGUP = (1 << 0),
    /*! This channel leaves the bridge if all participants have this flag set. */
    AST_BRIDGE_CHANNEL_FLAG_LONELY = (1 << 1),
    /*! This channel cannot be moved to another bridge. */
    AST_BRIDGE_CHANNEL_FLAG_IMMOVABLE = (1 << 2),
};

ast_bridge_feature_flags

enum ast_bridge_feature_flags

Flags used for bridge features.

Enumerator
AST_BRIDGE_FLAG_DISSOLVE_HANGUP	Upon channel hangup all bridge participants should be kicked out.
AST_BRIDGE_FLAG_DISSOLVE_EMPTY	The last channel to leave the bridge dissolves it.
AST_BRIDGE_FLAG_SMART	Move between bridging technologies as needed.
AST_BRIDGE_FLAG_MERGE_INHIBIT_FROM	Bridge channels cannot be merged from this bridge.
AST_BRIDGE_FLAG_MERGE_INHIBIT_TO	Bridge channels cannot be merged to this bridge.
AST_BRIDGE_FLAG_SWAP_INHIBIT_FROM	Bridge channels cannot be local channel swap optimized from this bridge.
AST_BRIDGE_FLAG_SWAP_INHIBIT_TO	Bridge channels cannot be local channel swap optimized to this bridge.
AST_BRIDGE_FLAG_MASQUERADE_ONLY	Bridge channels can be moved to another bridge only by masquerade (ConfBridge)
AST_BRIDGE_FLAG_TRANSFER_PROHIBITED	Bridge does not allow transfers of channels out
AST_BRIDGE_FLAG_TRANSFER_BRIDGE_ONLY	Bridge transfers require transfer of entire bridge rather than individual channels
AST_BRIDGE_FLAG_INVISIBLE	Bridge is invisible to AMI/CLI/ARI/etc.

Definition at line 35 of file bridge_features.h.

                              {
    /*! Upon channel hangup all bridge participants should be kicked out. */
    AST_BRIDGE_FLAG_DISSOLVE_HANGUP = (1 << 0),
    /*! The last channel to leave the bridge dissolves it. */
    AST_BRIDGE_FLAG_DISSOLVE_EMPTY = (1 << 1),
    /*! Move between bridging technologies as needed. */
    AST_BRIDGE_FLAG_SMART = (1 << 2),
    /*! Bridge channels cannot be merged from this bridge. */
    AST_BRIDGE_FLAG_MERGE_INHIBIT_FROM = (1 << 3),
    /*! Bridge channels cannot be merged to this bridge. */
    AST_BRIDGE_FLAG_MERGE_INHIBIT_TO = (1 << 4),
    /*! Bridge channels cannot be local channel swap optimized from this bridge. */
    AST_BRIDGE_FLAG_SWAP_INHIBIT_FROM = (1 << 5),
    /*! Bridge channels cannot be local channel swap optimized to this bridge. */
    AST_BRIDGE_FLAG_SWAP_INHIBIT_TO = (1 << 6),
    /*! Bridge channels can be moved to another bridge only by masquerade (ConfBridge) */
    AST_BRIDGE_FLAG_MASQUERADE_ONLY = (1 << 7),
    /*! Bridge does not allow transfers of channels out */
    AST_BRIDGE_FLAG_TRANSFER_PROHIBITED = (1 << 8),
    /*! Bridge transfers require transfer of entire bridge rather than individual channels */
    AST_BRIDGE_FLAG_TRANSFER_BRIDGE_ONLY = (1 << 9),
    /*! Bridge is invisible to AMI/CLI/ARI/etc. */
    AST_BRIDGE_FLAG_INVISIBLE = (1 << 10),
};

ast_bridge_features_monitor

enum ast_bridge_features_monitor

Enumerator
AUTO_MONITOR_TOGGLE	Toggle start/stop of MixMonitor.
AUTO_MONITOR_START	Start MixMonitor if not already started.
AUTO_MONITOR_STOP	Stop MixMonitor if not already stopped.

Definition at line 301 of file bridge_features.h.

                                 {
    /*! Toggle start/stop of MixMonitor. */
    AUTO_MONITOR_TOGGLE,
    /*! Start MixMonitor if not already started. */
    AUTO_MONITOR_START,
    /*! Stop MixMonitor if not already stopped. */
    AUTO_MONITOR_STOP,
};

ast_bridge_hook_remove_flags

enum ast_bridge_hook_remove_flags

Enumerator
AST_BRIDGE_HOOK_REMOVE_ON_PULL	The hook is removed when the channel is pulled from the bridge.
AST_BRIDGE_HOOK_REMOVE_ON_PERSONALITY_CHANGE	The hook is removed when the bridge's personality changes.

Definition at line 172 of file bridge_features.h.

                                  {
    /*! The hook is removed when the channel is pulled from the bridge. */
    AST_BRIDGE_HOOK_REMOVE_ON_PULL = (1 << 0),
    /*! The hook is removed when the bridge's personality changes. */
    AST_BRIDGE_HOOK_REMOVE_ON_PERSONALITY_CHANGE = (1 << 1),
};

ast_bridge_hook_timer_option

enum ast_bridge_hook_timer_option

Enumerator
AST_BRIDGE_HOOK_TIMER_OPTION_MEDIA	The timer temporarily affects media. (Like a custom playfile.)

Definition at line 224 of file bridge_features.h.

                                  {
    /*! The timer temporarily affects media. (Like a custom playfile.) */
    AST_BRIDGE_HOOK_TIMER_OPTION_MEDIA = (1 << 0),
};

ast_bridge_hook_type

enum ast_bridge_hook_type

Enumerator
AST_BRIDGE_HOOK_TYPE_NONE	The hook type has not been specified.
AST_BRIDGE_HOOK_TYPE_DTMF
AST_BRIDGE_HOOK_TYPE_TIMER
AST_BRIDGE_HOOK_TYPE_HANGUP
AST_BRIDGE_HOOK_TYPE_JOIN
AST_BRIDGE_HOOK_TYPE_LEAVE
AST_BRIDGE_HOOK_TYPE_TALK
AST_BRIDGE_HOOK_TYPE_MOVE

Definition at line 179 of file bridge_features.h.

                          {
    /*! The hook type has not been specified. */
    AST_BRIDGE_HOOK_TYPE_NONE,
    AST_BRIDGE_HOOK_TYPE_DTMF,
    AST_BRIDGE_HOOK_TYPE_TIMER,
    AST_BRIDGE_HOOK_TYPE_HANGUP,
    AST_BRIDGE_HOOK_TYPE_JOIN,
    AST_BRIDGE_HOOK_TYPE_LEAVE,
    AST_BRIDGE_HOOK_TYPE_TALK,
    AST_BRIDGE_HOOK_TYPE_MOVE,
};

Function Documentation

ast_bridge_dtmf_hook()

int ast_bridge_dtmf_hook	(	struct ast_bridge_features *	features,
		const char *	dtmf,
		ast_bridge_hook_callback	callback,
		void *	hook_pvt,
		ast_bridge_hook_pvt_destructor	destructor,
		enum ast_bridge_hook_remove_flags	remove_flags
	)

Attach a DTMF hook to a bridge features structure.

Parameters

features	Bridge features structure
dtmf	DTMF string to be activated upon
callback	Function to execute upon activation
hook_pvt	Unique data
destructor	Optional destructor callback for hook_pvt data
remove_flags	Dictates what situations the hook should be removed.

Return values

0	on success
-1	on failure (The caller must cleanup any hook_pvt resources.)

Example usage:

struct ast_bridge_features features;
ast_bridge_features_init(&features);
ast_bridge_dtmf_hook(&features, "#", pound_callback, NULL, NULL, 0);

This makes the bridging core call pound_callback if a channel that has this feature structure inputs the DTMF string '#'. A pointer to useful data may be provided to the hook_pvt parameter.

Definition at line 3391 of file bridge.c.

{
    struct ast_bridge_hook_dtmf *hook;
    int res;
 
    /* Allocate new hook and setup it's various variables */
    hook = (struct ast_bridge_hook_dtmf *) bridge_hook_generic(sizeof(*hook), callback,
        hook_pvt, destructor, remove_flags);
    if (!hook) {
        return -1;
    }
    hook->generic.type = AST_BRIDGE_HOOK_TYPE_DTMF;
    ast_copy_string(hook->dtmf.code, dtmf, sizeof(hook->dtmf.code));
 
    /* Once done we put it in the container. */
    res = ao2_link(features->dtmf_hooks, hook) ? 0 : -1;
    if (res) {
        /*
         * Could not link the hook into the container.
         *
         * Remove the hook_pvt destructor call from the hook since we
         * are returning failure to install the hook.
         */
        hook->generic.destructor = NULL;
    }
    ao2_ref(hook, -1);
 
    return res;
}

References ao2_link, ao2_ref, AST_BRIDGE_HOOK_TYPE_DTMF, ast_copy_string(), bridge_hook_generic(), callback(), ast_bridge_hook_dtmf_parms::code, ast_bridge_hook::destructor, ast_bridge_hook_dtmf::dtmf, ast_bridge_features::dtmf_hooks, ast_bridge_hook_dtmf::generic, NULL, and ast_bridge_hook::type.

Referenced by apply_menu_to_user(), ast_bridge_features_enable(), AST_TEST_DEFINE(), bridge_agent_hold_push(), bridge_personality_atxfer_push(), and dynamic_dtmf_hook_add().

ast_bridge_features_cleanup()

void ast_bridge_features_cleanup

(

struct ast_bridge_features *

features

)

Clean up the contents of a bridge features structure.

Parameters

features

Bridge features structure

Example usage:

struct ast_bridge_features features;
ast_bridge_features_init(&features);
ast_bridge_features_cleanup(&features);

This cleans up the feature structure 'features'.

Note

This MUST be called after the features structure is done being used or a memory leak may occur.

Definition at line 3862 of file bridge.c.

{
    struct ast_bridge_hook_timer *hook;
 
    /* Destroy the interval hooks heap. */
    if (features->interval_hooks) {
        while ((hook = ast_heap_pop(features->interval_hooks))) {
            ao2_ref(hook, -1);
        }
        features->interval_hooks = ast_heap_destroy(features->interval_hooks);
    }
 
    /* Destroy the miscellaneous other hooks container. */
    ao2_cleanup(features->other_hooks);
    features->other_hooks = NULL;
 
    /* Destroy the DTMF hooks container. */
    ao2_cleanup(features->dtmf_hooks);
    features->dtmf_hooks = NULL;
}

References ao2_cleanup, ao2_ref, ast_heap_destroy(), ast_heap_pop(), ast_bridge_features::dtmf_hooks, ast_bridge_features::interval_hooks, NULL, and ast_bridge_features::other_hooks.

Referenced by agent_request_exec(), agent_run(), ast_bridge_call_with_flags(), ast_bridge_features_destroy(), AST_TEST_DEFINE(), AST_TEST_DEFINE(), bridge_exec(), bridgeadd_exec(), bridgewait_exec(), channel_feature_hooks_set_full(), confbridge_exec(), park_and_announce_app_exec(), park_app_exec(), and parked_call_app_exec().

ast_bridge_features_destroy()

void ast_bridge_features_destroy

(

struct ast_bridge_features *

features

)

Destroy an allocated bridge features struct.

Since

12.0.0

Parameters

features

Bridge features structure

Example usage:

struct ast_bridge_features *features;
features = ast_bridge_features_new();
ast_bridge_features_destroy(features);

Definition at line 3883 of file bridge.c.

{
    if (!features) {
        return;
    }
    ast_bridge_features_cleanup(features);
    ast_free(features);
}

References ast_bridge_features_cleanup(), and ast_free.

Referenced by ast_bridge_add_channel(), ast_bridge_call_with_flags(), ast_bridge_features_new(), ast_local_setup_bridge(), bridge_channel_depart_thread(), bridge_channel_ind_thread(), bridge_exec(), bridge_impart_internal(), conf_start_record(), control_dtor(), features_destroy(), and local_pvt_destructor().

ast_bridge_features_do()

int ast_bridge_features_do	(	enum ast_bridge_builtin_feature	feature,
		struct ast_bridge_channel *	bridge_channel,
		void *	hook_pvt
	)

Invoke a built in feature hook now.

Parameters

feature	The feature to invoke
bridge_channel	Channel executing the feature
hook_pvt	Private data passed in when the hook was created

Note

This API call is only meant to be used by bridge subclasses and hook callbacks to request a builtin feature hook to be executed.

Return values

0	on success
-1	on failure

Example usage:

ast_bridge_features_do(AST_BRIDGE_BUILTIN_ATTENDED_TRANSFER, bridge_channel, hook_pvt);

Definition at line 3299 of file bridge.c.

{
    ast_bridge_hook_callback callback;
 
    if (ARRAY_LEN(builtin_features_handlers) <= feature) {
        return -1;
    }
 
    callback = builtin_features_handlers[feature];
    if (!callback) {
        return -1;
    }
    callback(bridge_channel, hook_pvt);
 
    return 0;
}

References ARRAY_LEN, builtin_features_handlers, and callback().

Referenced by agent_connect_caller().

ast_bridge_features_enable()

int ast_bridge_features_enable	(	struct ast_bridge_features *	features,
		enum ast_bridge_builtin_feature	feature,
		const char *	dtmf,
		void *	config,
		ast_bridge_hook_pvt_destructor	destructor,
		enum ast_bridge_hook_remove_flags	remove_flags
	)

Enable a built in feature on a bridge features structure.

Parameters

features	Bridge features structure
feature	Feature to enable
dtmf	Optionally the DTMF stream to trigger the feature, if not specified it will be the default
config	Configuration structure unique to the built in type
destructor	Optional destructor callback for config data
remove_flags	Dictates what situations the hook should be removed.

Return values

0	on success
-1	on failure

Example usage:

struct ast_bridge_features features;
ast_bridge_features_init(&features);
ast_bridge_features_enable(&features, AST_BRIDGE_BUILTIN_ATTENDEDTRANSFER, NULL, NULL, 0);

This enables the attended transfer DTMF option using the default DTMF string. An alternate string may be provided using the dtmf parameter. Internally this is simply setting up a hook to a built in feature callback function.

Definition at line 3574 of file bridge.c.

{
    if (ARRAY_LEN(builtin_features_handlers) <= feature
        || !builtin_features_handlers[feature]) {
        return -1;
    }
 
    /* If no alternate DTMF stream was provided use the default one */
    if (ast_strlen_zero(dtmf)) {
        dtmf = builtin_features_dtmf[feature];
        /* If no DTMF is still available (ie: it has been disabled) then error out now */
        if (ast_strlen_zero(dtmf)) {
            ast_debug(1, "Failed to enable built in feature %u on %p, no DTMF string is available for it.\n",
                feature, features);
            return -1;
        }
    }
 
    /*
     * The rest is basically pretty easy.  We create another hook
     * using the built in feature's DTMF callback.  Easy as pie.
     */
    return ast_bridge_dtmf_hook(features, dtmf, builtin_features_handlers[feature],
        config, destructor, remove_flags);
}

References ARRAY_LEN, ast_bridge_dtmf_hook(), ast_debug, ast_strlen_zero(), builtin_features_dtmf, builtin_features_handlers, and config.

Referenced by builtin_features_helper().

ast_bridge_features_init()

int ast_bridge_features_init

(

struct ast_bridge_features *

features

)

Initialize bridge features structure.

Parameters

features

Bridge featues structure

Return values

0	on success
-1	on failure

Example usage:

struct ast_bridge_features features;
ast_bridge_features_init(&features);

This initializes the feature structure 'features' to have nothing enabled.

Note

This MUST be called before enabling features or flags. Failure to do so may result in a crash.

Definition at line 3829 of file bridge.c.

{
    /* Zero out the structure */
    memset(features, 0, sizeof(*features));
 
    /* Initialize the DTMF hooks container */
    features->dtmf_hooks = ao2_container_alloc_list(AO2_ALLOC_OPT_LOCK_MUTEX,
        AO2_CONTAINER_ALLOC_OPT_DUPS_REPLACE, bridge_dtmf_hook_sort, NULL);
    if (!features->dtmf_hooks) {
        return -1;
    }
 
    /* Initialize the miscellaneous other hooks container */
    features->other_hooks = ao2_container_alloc_list(AO2_ALLOC_OPT_LOCK_MUTEX, 0, NULL,
        NULL);
    if (!features->other_hooks) {
        return -1;
    }
 
    /* Initialize the interval hooks heap */
    features->interval_hooks = ast_heap_create(8, interval_hook_time_cmp,
        offsetof(struct ast_bridge_hook_timer, timer.heap_index));
    if (!features->interval_hooks) {
        return -1;
    }
 
    features->dtmf_passthrough = 1;
    features->text_messaging = 1;
 
    return 0;
}

References AO2_ALLOC_OPT_LOCK_MUTEX, ao2_container_alloc_list, AO2_CONTAINER_ALLOC_OPT_DUPS_REPLACE, ast_heap_create, bridge_dtmf_hook_sort(), ast_bridge_features::dtmf_hooks, ast_bridge_features::dtmf_passthrough, interval_hook_time_cmp(), ast_bridge_features::interval_hooks, NULL, ast_bridge_features::other_hooks, ast_bridge_features::text_messaging, and timer.

Referenced by agent_request_exec(), agent_run(), ast_bridge_call_with_flags(), ast_bridge_features_new(), AST_TEST_DEFINE(), AST_TEST_DEFINE(), bridge_exec(), bridgeadd_exec(), bridgewait_exec(), channel_feature_hooks_set_full(), confbridge_exec(), park_and_announce_app_exec(), park_app_exec(), and parked_call_app_exec().

ast_bridge_features_limits_construct()

int ast_bridge_features_limits_construct

(

struct ast_bridge_features_limits *

limits

)

Constructor function for ast_bridge_features_limits.

Parameters

limits

pointer to a ast_bridge_features_limits struct that has been allocated, but not initialized

Return values

0	on success
-1	on failure

Definition at line 3605 of file bridge.c.

{
    memset(limits, 0, sizeof(*limits));
 
    if (ast_string_field_init(limits, 256)) {
        return -1;
    }
 
    return 0;
}

References ast_string_field_init.

Referenced by bridge_builtin_set_limits(), and pre_bridge_setup().

ast_bridge_features_limits_destroy()

void ast_bridge_features_limits_destroy

(

struct ast_bridge_features_limits *

limits

)

Destructor function for ast_bridge_features_limits.

Parameters

limits

pointer to an ast_bridge_features_limits struct that needs to be destroyed

This function does not free memory allocated to the ast_bridge_features_limits struct, it only frees elements within the struct. You must still call ast_free on the struct if you allocated it with malloc.

Definition at line 3616 of file bridge.c.

{
    ast_string_field_free_memory(limits);
}

References ast_string_field_free_memory.

Referenced by bridge_features_limits_dtor(), and pre_bridge_setup().

ast_bridge_features_merge()

void ast_bridge_features_merge	(	struct ast_bridge_features *	into,
		const struct ast_bridge_features *	from
	)

Merge one ast_bridge_features into another.

Parameters

into	The ast_bridge_features that will be merged into
from	The ast_bridge_features that will be merged from

Definition at line 3804 of file bridge.c.

{
    struct ast_bridge_hook_timer *hook;
    int idx;
 
    /* Merge hook containers */
    ao2_callback(from->dtmf_hooks, 0, merge_container_cb, into->dtmf_hooks);
    ao2_callback(from->other_hooks, 0, merge_container_cb, into->other_hooks);
 
    /* Merge hook heaps */
    ast_heap_wrlock(from->interval_hooks);
    for (idx = 1; (hook = ast_heap_peek(from->interval_hooks, idx)); idx++) {
        wrap_hook(into, hook);
    }
    ast_heap_unlock(from->interval_hooks);
 
    /* Merge feature flags */
    into->feature_flags.flags |= from->feature_flags.flags;
    into->usable |= from->usable;
 
    into->mute |= from->mute;
    into->dtmf_passthrough |= from->dtmf_passthrough;
}

References ao2_callback, ast_heap_peek(), ast_heap_unlock, ast_heap_wrlock, ast_bridge_features::dtmf_hooks, ast_bridge_features::dtmf_passthrough, ast_bridge_features::feature_flags, ast_flags::flags, ast_bridge_features::interval_hooks, merge_container_cb(), ast_bridge_features::mute, ast_bridge_features::other_hooks, ast_bridge_features::usable, and wrap_hook().

Referenced by bridge_channel_internal_join(), and channel_feature_hooks_set_full().

ast_bridge_features_new()

struct ast_bridge_features * ast_bridge_features_new

(

void

)

Allocate a new bridge features struct.

Since

12.0.0

Example usage:

struct ast_bridge_features *features;
features = ast_bridge_features_new();
ast_bridge_features_destroy(features);

Returns

features New allocated features struct.

Return values

NULL

on error.

Definition at line 3892 of file bridge.c.

{
    struct ast_bridge_features *features;
 
    features = ast_malloc(sizeof(*features));
    if (features) {
        if (ast_bridge_features_init(features)) {
            ast_bridge_features_destroy(features);
            features = NULL;
        }
    }
 
    return features;
}

References ast_bridge_features_destroy(), ast_bridge_features_init(), ast_malloc, and NULL.

Referenced by ast_bridge_call_with_flags(), ast_unreal_channel_push_to_bridge(), bridge_exec(), bridge_impart_internal(), channel_feature_hooks_set_full(), conf_announce_channel_push(), conf_start_record(), and stasis_app_control_bridge_features_init().

ast_bridge_features_register()

int ast_bridge_features_register	(	enum ast_bridge_builtin_feature	feature,
		ast_bridge_hook_callback	callback,
		const char *	dtmf
	)

Register a handler for a built in feature.

Parameters

feature	The feature that the handler will be responsible for
callback	The callback function that will handle it
dtmf	Default DTMF string used to activate the feature

Return values

0	on success
-1	on failure

Example usage:

ast_bridge_features_register(AST_BRIDGE_BUILTIN_ATTENDED_TRANSFER, bridge_builtin_attended_transfer, "*1");

This registers the function bridge_builtin_attended_transfer as the function responsible for the built in attended transfer feature.

Definition at line 3271 of file bridge.c.

{
    if (ARRAY_LEN(builtin_features_handlers) <= feature
        || builtin_features_handlers[feature]) {
        return -1;
    }
 
    if (!ast_strlen_zero(dtmf)) {
        ast_copy_string(builtin_features_dtmf[feature], dtmf, sizeof(builtin_features_dtmf[feature]));
    }
 
    builtin_features_handlers[feature] = callback;
 
    return 0;
}

References ARRAY_LEN, ast_copy_string(), ast_strlen_zero(), builtin_features_dtmf, builtin_features_handlers, and callback().

Referenced by ast_bridging_init_basic(), load_module(), and load_parking_bridge_features().

ast_bridge_features_set_flag()

void ast_bridge_features_set_flag	(	struct ast_bridge_features *	features,
		unsigned int	flag
	)

Set a flag on a bridge channel features structure.

Parameters

features	Bridge channel features structure
flag	Flag to enable

Example usage:

struct ast_bridge_features features;
ast_bridge_features_init(&features);
ast_bridge_features_set_flag(&features, AST_BRIDGE_CHANNEL_FLAG_DISSOLVE_HANGUP);

This sets the AST_BRIDGE_CHANNEL_FLAG_DISSOLVE_HANGUP feature to be enabled on the features structure 'features'.

Definition at line 3636 of file bridge.c.

{
    ast_set_flag(&features->feature_flags, flag);
    features->usable = 1;
}

References ast_set_flag, ast_bridge_features::feature_flags, and ast_bridge_features::usable.

ast_bridge_features_set_limits()

int ast_bridge_features_set_limits	(	struct ast_bridge_features *	features,
		struct ast_bridge_features_limits *	limits,
		enum ast_bridge_hook_remove_flags	remove_flags
	)

Limit the amount of time a channel may stay in the bridge and optionally play warning messages as time runs out.

Parameters

features	Bridge features structure
limits	Configured limits applicable to the channel
remove_flags	Dictates what situations the hook should be removed.

Return values

0	on success
-1	on failure

Example usage:

struct ast_bridge_features features;
struct ast_bridge_features_limits limits;
ast_bridge_features_init(&features);
ast_bridge_features_limits_construct(&limits);
ast_bridge_features_set_limits(&features, &limits, 0);
ast_bridge_features_limits_destroy(&limits);

This sets the maximum time the channel can be in the bridge to 10 seconds and does not play any warnings.

Note

This API call can only be used on a features structure that will be used in association with a bridge channel.

The ast_bridge_features_limits structure must remain accessible for the lifetime of the features structure.

Definition at line 3621 of file bridge.c.

{
    if (builtin_interval_handlers[AST_BRIDGE_BUILTIN_INTERVAL_LIMITS]) {
        ast_bridge_builtin_set_limits_fn callback;
 
        callback = builtin_interval_handlers[AST_BRIDGE_BUILTIN_INTERVAL_LIMITS];
        return callback(features, limits, remove_flags);
    }
 
    ast_log(LOG_ERROR, "Attempted to set limits without an AST_BRIDGE_BUILTIN_INTERVAL_LIMITS callback registered.\n");
    return -1;
}

References AST_BRIDGE_BUILTIN_INTERVAL_LIMITS, ast_log, builtin_interval_handlers, callback(), and LOG_ERROR.

Referenced by pre_bridge_setup().

ast_bridge_features_unregister()

int ast_bridge_features_unregister

(

enum ast_bridge_builtin_feature

feature

)

Unregister a handler for a built in feature.

Parameters

feature

The feature to unregister

Return values

0	on success
-1	on failure

Example usage:

ast_bridge_features_unregister(AST_BRIDGE_BUILTIN_ATTENDED_TRANSFER);

This unregisters the function that is handling the built in attended transfer feature.

Definition at line 3287 of file bridge.c.

{
    if (ARRAY_LEN(builtin_features_handlers) <= feature
        || !builtin_features_handlers[feature]) {
        return -1;
    }
 
    builtin_features_handlers[feature] = NULL;
 
    return 0;
}

References ARRAY_LEN, builtin_features_handlers, and NULL.

Referenced by unload_module(), and unload_parking_bridge_features().

ast_bridge_hangup_hook()

int ast_bridge_hangup_hook	(	struct ast_bridge_features *	features,
		ast_bridge_hook_callback	callback,
		void *	hook_pvt,
		ast_bridge_hook_pvt_destructor	destructor,
		enum ast_bridge_hook_remove_flags	remove_flags
	)

Attach a hangup hook to a bridge features structure.

Parameters

features	Bridge features structure
callback	Function to execute upon activation
hook_pvt	Unique data
destructor	Optional destructor callback for hook_pvt data
remove_flags	Dictates what situations the hook should be removed.

Return values

0	on success
-1	on failure (The caller must cleanup any hook_pvt resources.)

Example usage:

struct ast_bridge_features features;
ast_bridge_features_init(&features);
ast_bridge_hangup_hook(&features, hangup_callback, NULL, NULL, 0);

This makes the bridging core call hangup_callback if a channel that has this hook hangs up. A pointer to useful data may be provided to the hook_pvt parameter.

Definition at line 3474 of file bridge.c.

{
    return bridge_other_hook(features, callback, hook_pvt, destructor, remove_flags,
        AST_BRIDGE_HOOK_TYPE_HANGUP);
}

References AST_BRIDGE_HOOK_TYPE_HANGUP, bridge_other_hook(), callback(), ast_bridge_hook::destructor, ast_bridge_hook::hook_pvt, and ast_bridge_hook::remove_flags.

Referenced by add_normal_hooks(), and bridge_personality_atxfer_push().

ast_bridge_interval_hook()

int ast_bridge_interval_hook	(	struct ast_bridge_features *	features,
		enum ast_bridge_hook_timer_option	flags,
		unsigned int	interval,
		ast_bridge_hook_callback	callback,
		void *	hook_pvt,
		ast_bridge_hook_pvt_destructor	destructor,
		enum ast_bridge_hook_remove_flags	remove_flags
	)

Attach an interval hook to a bridge features structure.

Parameters

features	Bridge features structure
flags	Interval timer callback option flags.
interval	The interval that the hook should execute at in milliseconds
callback	Function to execute upon activation
hook_pvt	Unique data
destructor	Optional destructor callback for hook_pvt data
remove_flags	Dictates what situations the hook should be removed.

Return values

0	on success
-1	on failure (The caller must cleanup any hook_pvt resources.)

struct ast_bridge_features features;
ast_bridge_features_init(&features);
ast_bridge_interval_hook(&features, 1000, playback_callback, NULL, NULL, 0);

This makes the bridging core call playback_callback every second. A pointer to useful data may be provided to the hook_pvt parameter.

Definition at line 3528 of file bridge.c.

{
    struct ast_bridge_hook_timer *hook;
    int res;
 
    if (!features ||!interval || !callback) {
        return -1;
    }
 
    /* Allocate new hook and setup it's various variables */
    hook = (struct ast_bridge_hook_timer *) bridge_hook_generic(sizeof(*hook), callback,
        hook_pvt, destructor, remove_flags);
    if (!hook) {
        return -1;
    }
    hook->generic.type = AST_BRIDGE_HOOK_TYPE_TIMER;
    hook->timer.interval = interval;
    hook->timer.trip_time = ast_tvadd(ast_tvnow(), ast_samp2tv(interval, 1000));
    hook->timer.seqno = ast_atomic_fetchadd_int((int *) &features->interval_sequence, +1);
    hook->timer.flags = flags;
 
    ast_debug(1, "Putting interval hook %p with interval %u in the heap on features %p\n",
        hook, hook->timer.interval, features);
    ast_heap_wrlock(features->interval_hooks);
    res = ast_heap_push(features->interval_hooks, hook);
    ast_heap_unlock(features->interval_hooks);
    if (res) {
        /*
         * Could not push the hook into the heap
         *
         * Remove the hook_pvt destructor call from the hook since we
         * are returning failure to install the hook.
         */
        hook->generic.destructor = NULL;
        ao2_ref(hook, -1);
    }
 
    return res ? -1 : 0;
}

References ao2_ref, ast_atomic_fetchadd_int(), AST_BRIDGE_HOOK_TYPE_TIMER, ast_debug, ast_heap_push, ast_heap_unlock, ast_heap_wrlock, ast_samp2tv(), ast_tvadd(), ast_tvnow(), bridge_hook_generic(), callback(), ast_bridge_hook::destructor, ast_bridge_hook_timer_parms::flags, ast_bridge_hook_timer::generic, ast_bridge_hook_timer_parms::interval, ast_bridge_features::interval_hooks, ast_bridge_features::interval_sequence, NULL, ast_bridge_hook_timer_parms::seqno, ast_bridge_hook_timer::timer, ast_bridge_hook_timer_parms::trip_time, and ast_bridge_hook::type.

Referenced by agent_request_exec(), apply_option_timeout(), AST_TEST_DEFINE(), bridge_agent_hold_push(), bridge_builtin_set_limits(), confbridge_exec(), parking_set_duration(), set_interval_hook(), and wrap_hook().

ast_bridge_interval_register()

int ast_bridge_interval_register	(	enum ast_bridge_builtin_interval	interval,
		ast_bridge_builtin_set_limits_fn	callback
	)

Register a handler for a built in interval feature.

Parameters

interval	The interval feature that the handler will be responsible for
callback	the Callback function that will handle it

Return values

0	on success
-1	on failure

Example usage:

ast_bridge_interval_register(AST_BRIDGE_BUILTIN_INTERVAL_LIMITS, bridge_builtin_set_limits);

This registers the function bridge_builtin_set_limits as the function responsible for the built in duration limit feature.

Definition at line 3316 of file bridge.c.

{
    if (ARRAY_LEN(builtin_interval_handlers) <= interval
        || builtin_interval_handlers[interval]) {
        return -1;
    }
 
    builtin_interval_handlers[interval] = callback;
 
    return 0;
}

References ARRAY_LEN, builtin_interval_handlers, and callback().

Referenced by load_module().

ast_bridge_interval_unregister()

int ast_bridge_interval_unregister

(

enum ast_bridge_builtin_interval

interval

)

Unregisters a handler for a built in interval feature.

Parameters

interval

the interval feature to unregister

Return values

0	on success
-1	on failure

Example usage:

ast_bridge_interval_unregister(AST_BRIDGE_BULTIN_INTERVAL_LIMITS)

This unregisters the function that is handling the built in duration limit feature.

Definition at line 3328 of file bridge.c.

{
    if (ARRAY_LEN(builtin_interval_handlers) <= interval
        || !builtin_interval_handlers[interval]) {
        return -1;
    }
 
    builtin_interval_handlers[interval] = NULL;
 
    return 0;
 
}

References ARRAY_LEN, builtin_interval_handlers, and NULL.

Referenced by unload_module().

ast_bridge_join_hook()

int ast_bridge_join_hook	(	struct ast_bridge_features *	features,
		ast_bridge_hook_callback	callback,
		void *	hook_pvt,
		ast_bridge_hook_pvt_destructor	destructor,
		enum ast_bridge_hook_remove_flags	remove_flags
	)

Attach a bridge channel join hook to a bridge features structure.

Parameters

features	Bridge features structure
callback	Function to execute upon activation
hook_pvt	Unique data
destructor	Optional destructor callback for hook_pvt data
remove_flags	Dictates what situations the hook should be removed.

Return values

0	on success
-1	on failure (The caller must cleanup any hook_pvt resources.)

Example usage:

struct ast_bridge_features features;
ast_bridge_features_init(&features);
ast_bridge_join_hook(&features, join_callback, NULL, NULL, 0);

This makes the bridging core call join_callback when a channel successfully joins the bridging system. A pointer to useful data may be provided to the hook_pvt parameter.

Definition at line 3484 of file bridge.c.

{
    return bridge_other_hook(features, callback, hook_pvt, destructor, remove_flags,
        AST_BRIDGE_HOOK_TYPE_JOIN);
}

References AST_BRIDGE_HOOK_TYPE_JOIN, bridge_other_hook(), callback(), ast_bridge_hook::destructor, ast_bridge_hook::hook_pvt, and ast_bridge_hook::remove_flags.

Referenced by agent_request_exec(), and confbridge_exec().

ast_bridge_leave_hook()

int ast_bridge_leave_hook	(	struct ast_bridge_features *	features,
		ast_bridge_hook_callback	callback,
		void *	hook_pvt,
		ast_bridge_hook_pvt_destructor	destructor,
		enum ast_bridge_hook_remove_flags	remove_flags
	)

Attach a bridge channel leave hook to a bridge features structure.

Parameters

features	Bridge features structure
callback	Function to execute upon activation
hook_pvt	Unique data
destructor	Optional destructor callback for hook_pvt data
remove_flags	Dictates what situations the hook should be removed.

Return values

0	on success
-1	on failure (The caller must cleanup any hook_pvt resources.)

Example usage:

struct ast_bridge_features features;
ast_bridge_features_init(&features);
ast_bridge_leave_hook(&features, leave_callback, NULL, NULL, 0);

This makes the bridging core call leave_callback when a channel successfully leaves the bridging system. A pointer to useful data may be provided to the hook_pvt parameter.

Definition at line 3494 of file bridge.c.

{
    return bridge_other_hook(features, callback, hook_pvt, destructor, remove_flags,
        AST_BRIDGE_HOOK_TYPE_LEAVE);
}

References AST_BRIDGE_HOOK_TYPE_LEAVE, bridge_other_hook(), callback(), ast_bridge_hook::destructor, ast_bridge_hook::hook_pvt, and ast_bridge_hook::remove_flags.

Referenced by confbridge_exec().

ast_bridge_move_hook()

int ast_bridge_move_hook	(	struct ast_bridge_features *	features,
		ast_bridge_move_indicate_callback	callback,
		void *	hook_pvt,
		ast_bridge_hook_pvt_destructor	destructor,
		enum ast_bridge_hook_remove_flags	remove_flags
	)

Attach a bridge channel move detection hook to a bridge features structure.

Parameters

features	Bridge features structure
callback	Function to execute upon activation
hook_pvt	Unique data
destructor	Optional destructor callback for hook_pvt data
remove_flags	Dictates what situations the hook should be removed.

Return values

0	on success
-1	on failure (The caller must cleanup any hook_pvt resources.)

Example usage:

struct ast_bridge_features features;
ast_bridge_features_init(&features);
ast_bridge_move_hook(&features, move_callback, NULL, NULL, 0);

This makes the bridging core call callback when a channel is moved from one bridge to another. A pointer to useful data may be provided to the hook_pvt parameter.

Definition at line 3516 of file bridge.c.

{
    ast_bridge_hook_callback hook_cb = (ast_bridge_hook_callback) callback;
 
    return bridge_other_hook(features, hook_cb, hook_pvt, destructor, remove_flags,
        AST_BRIDGE_HOOK_TYPE_MOVE);
}

References AST_BRIDGE_HOOK_TYPE_MOVE, bridge_other_hook(), callback(), ast_bridge_hook::destructor, hook_cb(), ast_bridge_hook::hook_pvt, and ast_bridge_hook::remove_flags.

Referenced by bridge_stasis_pull().

ast_bridge_talk_detector_hook()

int ast_bridge_talk_detector_hook	(	struct ast_bridge_features *	features,
		ast_bridge_talking_indicate_callback	callback,
		void *	hook_pvt,
		ast_bridge_hook_pvt_destructor	destructor,
		enum ast_bridge_hook_remove_flags	remove_flags
	)

Attach a bridge channel talk detection hook to a bridge features structure.

Parameters

features	Bridge features structure
callback	Function to execute upon activation
hook_pvt	Unique data
destructor	Optional destructor callback for hook_pvt data
remove_flags	Dictates what situations the hook should be removed.

Return values

0	on success
-1	on failure (The caller must cleanup any hook_pvt resources.)

Example usage:

struct ast_bridge_features features;
ast_bridge_features_init(&features);
ast_bridge_talk_hook(&features, talk_callback, NULL, NULL, 0);

This makes the bridging technology call talk_callback when a channel is recognized as starting and stopping talking. A pointer to useful data may be provided to the hook_pvt parameter.

Note

This hook is currently only supported by softmix.

Definition at line 3504 of file bridge.c.

{
    ast_bridge_hook_callback hook_cb = (ast_bridge_hook_callback) callback;
 
    return bridge_other_hook(features, hook_cb, hook_pvt, destructor, remove_flags,
        AST_BRIDGE_HOOK_TYPE_TALK);
}

References AST_BRIDGE_HOOK_TYPE_TALK, bridge_other_hook(), callback(), ast_bridge_hook::destructor, hook_cb(), ast_bridge_hook::hook_pvt, and ast_bridge_hook::remove_flags.

Referenced by confbridge_exec().