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liblinphone 3.5.2
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The #LinphoneCall object represents an incoming or outgoing call managed by the LinphoneCore. Outgoing calls can be created using linphone_core_invite() or linphone_core_invite_address(), while incoming calls are notified to the application through the LinphoneCoreVTable::call_state_changed callback.
See the basic call tutorial.
| typedef enum _LinphoneCallState LinphoneCallState |
LinphoneCallState enum represents the different state a call can reach into. The application is notified of state changes through the LinphoneCoreVTable::call_state_changed callback.
| enum _LinphoneCallState |
LinphoneCallState enum represents the different state a call can reach into. The application is notified of state changes through the LinphoneCoreVTable::call_state_changed callback.
| LinphoneCall* linphone_call_ref | ( | LinphoneCall * | obj | ) |
Increments the call 's reference count. An application that wishes to retain a pointer to call object must use this function to unsure the pointer remains valid. Once the application no more needs this pointer, it must call linphone_call_unref().
| void linphone_call_unref | ( | LinphoneCall * | obj | ) |
Decrements the call object reference count. See linphone_call_ref().
| const LinphoneCallParams* linphone_call_get_current_params | ( | const LinphoneCall * | call | ) |
Returns current parameters associated to the call.
| const LinphoneCallParams* linphone_call_get_remote_params | ( | LinphoneCall * | call | ) |
Returns call parameters proposed by remote.
This is useful when receiving an incoming call, to know whether the remote party supports video, encryption or whatever.
| const LinphoneAddress* linphone_call_get_remote_address | ( | const LinphoneCall * | call | ) |
Returns the remote address associated to this call
| char* linphone_call_get_remote_address_as_string | ( | const LinphoneCall * | call | ) |
Returns the remote address associated to this call as a string.
The result string must be freed by user using ms_free().
| LinphoneCallState linphone_call_get_state | ( | const LinphoneCall * | call | ) |
Retrieves the call's current state.
| LinphoneReason linphone_call_get_reason | ( | const LinphoneCall * | call | ) |
Returns the reason for a call termination (either error or normal termination)
| void* linphone_call_get_user_pointer | ( | LinphoneCall * | call | ) |
Get the user_pointer in the LinphoneCall
return user_pointer an opaque user pointer that can be retrieved at any time
| void linphone_call_set_user_pointer | ( | LinphoneCall * | call, |
| void * | user_pointer | ||
| ) |
Set the user_pointer in the LinphoneCall
the user_pointer is an opaque user pointer that can be retrieved at any time in the LinphoneCall
| LinphoneCallLog* linphone_call_get_call_log | ( | const LinphoneCall * | call | ) |
Returns the call log associated to this call.
| const char* linphone_call_get_refer_to | ( | const LinphoneCall * | call | ) |
Returns the refer-to uri (if the call was transfered).
| LinphoneCallDir linphone_call_get_dir | ( | const LinphoneCall * | call | ) |
Returns direction of the call (incoming or outgoing).
| const char* linphone_call_get_remote_user_agent | ( | LinphoneCall * | call | ) |
Returns the far end's user agent description string, if available.
| bool_t linphone_call_has_transfer_pending | ( | const LinphoneCall * | call | ) |
Returns true if this calls has received a transfer that has not been executed yet. Pending transfers are executed when this call is being paused or closed, locally or by remote endpoint. If the call is already paused while receiving the transfer request, the transfer immediately occurs.
| int linphone_call_get_duration | ( | const LinphoneCall * | call | ) |
Returns call's duration in seconds.
| LinphoneCall* linphone_call_get_replaced_call | ( | LinphoneCall * | call | ) |
Returns the call object this call is replacing, if any. Call replacement can occur during call transfers. By default, the core automatically terminates the replaced call and accept the new one. This function allows the application to know whether a new incoming call is a one that replaces another one.
| void linphone_call_enable_camera | ( | LinphoneCall * | call, |
| bool_t | enable | ||
| ) |
Indicate whether camera input should be sent to remote end.
| int linphone_call_take_video_snapshot | ( | LinphoneCall * | call, |
| const char * | file | ||
| ) |
Take a photo of currently received video and write it into a jpeg file.
| bool_t linphone_call_camera_enabled | ( | const LinphoneCall * | call | ) |
Returns TRUE if camera pictures are sent to the remote party.
| void linphone_call_params_enable_video | ( | LinphoneCallParams * | cp, |
| bool_t | enabled | ||
| ) |
Enable video stream.
| bool_t linphone_call_params_video_enabled | ( | const LinphoneCallParams * | cp | ) |
Returns whether video is enabled.
| void linphone_call_params_enable_early_media_sending | ( | LinphoneCallParams * | cp, |
| bool_t | enabled | ||
| ) |
Enable sending of real early media (during outgoing calls).
| bool_t linphone_call_params_local_conference_mode | ( | const LinphoneCallParams * | cp | ) |
Returns true if the call is part of the locally managed conference.
| void linphone_call_params_set_audio_bandwidth_limit | ( | LinphoneCallParams * | cp, |
| int | bandwidth | ||
| ) |
Refine bandwidth settings for this call by setting a bandwidth limit for audio streams. As a consequence, codecs whose bitrates are not compatible with this limit won't be used.
| LinphoneCall* linphone_core_invite | ( | LinphoneCore * | lc, |
| const char * | url | ||
| ) |
Initiates an outgoing call
| lc | the LinphoneCore object |
| url | the destination of the call (sip address, or phone number). |
The application doesn't own a reference to the returned LinphoneCall object. Use linphone_call_ref() to safely keep the LinphoneCall pointer valid within your application.
| LinphoneCall* linphone_core_invite_with_params | ( | LinphoneCore * | lc, |
| const char * | url, | ||
| const LinphoneCallParams * | p | ||
| ) |
Initiates an outgoing call according to supplied call parameters
| lc | the LinphoneCore object |
| url | the destination of the call (sip address, or phone number). |
| p | call parameters |
The application doesn't own a reference to the returned LinphoneCall object. Use linphone_call_ref() to safely keep the LinphoneCall pointer valid within your application.
| LinphoneCall* linphone_core_invite_address | ( | LinphoneCore * | lc, |
| const LinphoneAddress * | addr | ||
| ) |
Initiates an outgoing call given a destination LinphoneAddress
| lc | the LinphoneCore object |
| addr | the destination of the call (sip address). |
The LinphoneAddress can be constructed directly using linphone_address_new(), or created by linphone_core_interpret_url(). The application doesn't own a reference to the returned LinphoneCall object. Use linphone_call_ref() to safely keep the LinphoneCall pointer valid within your application.
| LinphoneCall* linphone_core_invite_address_with_params | ( | LinphoneCore * | lc, |
| const LinphoneAddress * | addr, | ||
| const LinphoneCallParams * | params | ||
| ) |
Initiates an outgoing call given a destination LinphoneAddress
| lc | the LinphoneCore object |
| addr | the destination of the call (sip address). |
| params | call parameters |
The LinphoneAddress can be constructed directly using linphone_address_new(), or created by linphone_core_interpret_url(). The application doesn't own a reference to the returned LinphoneCall object. Use linphone_call_ref() to safely keep the LinphoneCall pointer valid within your application.
| int linphone_core_update_call | ( | LinphoneCore * | lc, |
| LinphoneCall * | call, | ||
| const LinphoneCallParams * | params | ||
| ) |
Updates a running call according to supplied call parameters or parameters changed in the LinphoneCore.
In this version this is limited to the following use cases:
In case no changes are requested through the LinphoneCallParams argument, then this argument can be omitted and set to NULL.
| lc | the core |
| call | the call to be updated |
| params | the new call parameters to use. (may be NULL) |
| int linphone_core_defer_call_update | ( | LinphoneCore * | lc, |
| LinphoneCall * | call | ||
| ) |
When receiving a LinphoneCallUpdatedByRemote state notification, prevent LinphoneCore from performing an automatic answer.
When receiving a LinphoneCallUpdatedByRemote state notification (ie an incoming reINVITE), the default behaviour of LinphoneCore is to automatically answer the reINIVTE with call parameters unchanged. However when for example when the remote party updated the call to propose a video stream, it can be useful to prompt the user before answering. This can be achieved by calling linphone_core_defer_call_update() during the call state notifiacation, to deactivate the automatic answer that would just confirm the audio but reject the video. Then, when the user responds to dialog prompt, it becomes possible to call linphone_core_accept_call_update() to answer the reINVITE, with eventually video enabled in the LinphoneCallParams argument.
0 if successful, -1 if the linphone_core_defer_call_update() was done outside a LinphoneCallUpdatedByRemote notification, which is illegal.
| int linphone_core_accept_call_update | ( | LinphoneCore * | lc, |
| LinphoneCall * | call, | ||
| const LinphoneCallParams * | params | ||
| ) |
Accept call modifications initiated by other end.
This call may be performed in response to a LinphoneCallUpdatedByRemote state notification. When such notification arrives, the application can decide to call linphone_core_defer_update_call() so that it can have the time to prompt the user. linphone_call_get_remote_params() can be used to get information about the call parameters requested by the other party, such as whether a video stream is requested.
When the user accepts or refuse the change, linphone_core_accept_update() can be done to answer to the other party. If params is NULL, then the same call parameters established before the update request will continue to be used (no change). If params is not NULL, then the update will be accepted according to the parameters passed. Typical example is when a user accepts to start video, then params should indicate that video stream should be used (see linphone_call_params_enable_video()).
| lc | the linphone core object. |
| call | the LinphoneCall object |
| params | a LinphoneCallParams object describing the call parameters to accept. 0 if sucessful, -1 otherwise (actually when this function call is performed outside ot LinphoneCallUpdatedByRemote state). |
| int linphone_core_accept_call | ( | LinphoneCore * | lc, |
| LinphoneCall * | call | ||
| ) |
Accept an incoming call.
Basically the application is notified of incoming calls within the call_state_changed callback of the LinphoneCoreVTable structure, where it will receive a LinphoneCallIncoming event with the associated LinphoneCall object. The application can later accept the call using this method.
| lc | the LinphoneCore object |
| call | the LinphoneCall object representing the call to be answered. |
| int linphone_core_accept_call_with_params | ( | LinphoneCore * | lc, |
| LinphoneCall * | call, | ||
| const LinphoneCallParams * | params | ||
| ) |
Accept an incoming call, with parameters.
Basically the application is notified of incoming calls within the call_state_changed callback of the LinphoneCoreVTable structure, where it will receive a LinphoneCallIncoming event with the associated LinphoneCall object. The application can later accept the call using this method.
| lc | the LinphoneCore object |
| call | the LinphoneCall object representing the call to be answered. |
| params | the specific parameters for this call, for example whether video is accepted or not. Use NULL to use default parameters. |
| int linphone_core_terminate_call | ( | LinphoneCore * | lc, |
| LinphoneCall * | the_call | ||
| ) |
Terminates a call.
| lc | the LinphoneCore |
| the_call | the LinphoneCall object representing the call to be terminated. |
| int linphone_core_terminate_all_calls | ( | LinphoneCore * | lc | ) |
Terminates all the calls.
| lc | The LinphoneCore |
| const MSList* linphone_core_get_calls | ( | LinphoneCore * | lc | ) |
Returns the current list of calls.
Note that this list is read-only and might be changed by the core after a function call to linphone_core_iterate(). Similarly the LinphoneCall objects inside it might be destroyed without prior notice. To hold references to LinphoneCall object into your program, you must use linphone_call_ref().
| bool_t linphone_core_in_call | ( | const LinphoneCore * | lc | ) |
Returns TRUE if there is a call running.
| LinphoneCall* linphone_core_get_current_call | ( | const LinphoneCore * | lc | ) |
Returns The _LinphoneCall struct of the current call if one is in call
| int linphone_core_pause_call | ( | LinphoneCore * | lc, |
| LinphoneCall * | call | ||
| ) |
Pauses the call. If a music file has been setup using linphone_core_set_play_file(), this file will be played to the remote user.
| int linphone_core_resume_call | ( | LinphoneCore * | lc, |
| LinphoneCall * | the_call | ||
| ) |
Resumes the call.
| void linphone_core_set_inc_timeout | ( | LinphoneCore * | lc, |
| int | seconds | ||
| ) |
Set the incoming call timeout in seconds.
If an incoming call isn't answered for this timeout period, it is automatically declined.
| int linphone_core_get_inc_timeout | ( | LinphoneCore * | lc | ) |
Returns the incoming call timeout
See linphone_core_set_inc_timeout() for details.
| int linphone_core_get_calls_nb | ( | const LinphoneCore * | lc | ) |
Get the number of Call
| bool_t linphone_core_can_we_add_call | ( | LinphoneCore * | lc | ) |
Check if we do not have exceed the number of simultaneous call
| bool_t linphone_core_sound_resources_locked | ( | LinphoneCore * | lc | ) |
Check if a call will need the sound resources.
| lc | The LinphoneCore |
1.7.4