Group PJSUA_LIB_CALL

group PJSUA_LIB_CALL

Call manipulation.

Defines

PJSUA_MAX_CALLS

Maximum simultaneous calls.

PJSUA_MAX_VID_WINS

Maximum active video windows

PJSUA_CALL_SEND_DTMF_DURATION_DEFAULT

Specify the default signal duration when sending DTMF using SIP INFO.

Default is 160

PJSUA_XFER_NO_REQUIRE_REPLACES

Flag to indicate that “Require: replaces” should not be put in the outgoing INVITE request caused by REFER request created by pjsua_call_xfer_replaces().

Typedefs

typedef int pjsua_vid_win_id

Video window ID.

Enums

enum pjsua_call_media_status

This enumeration specifies the media status of a call, and it’s part of pjsua_call_info structure.

Values:

PJSUA_CALL_MEDIA_NONE

Call currently has no media, or the media is not used.

PJSUA_CALL_MEDIA_ACTIVE

The media is active

PJSUA_CALL_MEDIA_LOCAL_HOLD

The media is currently put on hold by local endpoint

PJSUA_CALL_MEDIA_REMOTE_HOLD

The media is currently put on hold by remote endpoint

PJSUA_CALL_MEDIA_ERROR

The media has reported error (e.g. ICE negotiation)

enum pjsua_vid_req_keyframe_method

Enumeration of video keyframe request methods. Keyframe request is triggered by decoder, usually when the incoming video stream cannot be decoded properly due to missing video keyframe.

Values:

PJSUA_VID_REQ_KEYFRAME_SIP_INFO = 1

Requesting keyframe via SIP INFO message. Note that incoming keyframe request via SIP INFO will always be handled even if this flag is unset.

PJSUA_VID_REQ_KEYFRAME_RTCP_PLI = 2

Requesting keyframe via Picture Loss Indication of RTCP feedback. This is currently not supported.

enum pjsua_call_flag

Flags to be given to various call APIs. More than one flags may be specified by bitmasking them.

Values:

PJSUA_CALL_UNHOLD = 1

When the call is being put on hold, specify this flag to unhold it. This flag is only valid for pjsua_call_reinvite() and pjsua_call_update(). Note: for compatibility reason, this flag must have value of 1 because previously the unhold option is specified as boolean value.

PJSUA_CALL_UPDATE_CONTACT = 2

Update the local invite session’s contact with the contact URI from the account. This flag is only valid for pjsua_call_set_hold2(), pjsua_call_reinvite() and pjsua_call_update(). This flag is useful in IP address change situation, after the local account’s Contact has been updated (typically with re-registration) use this flag to update the invite session with the new Contact and to inform this new Contact to the remote peer with the outgoing re-INVITE or UPDATE.

PJSUA_CALL_INCLUDE_DISABLED_MEDIA = 4

Include SDP “m=” line with port set to zero for each disabled media (i.e when aud_cnt or vid_cnt is set to zero). This flag is only valid for pjsua_call_make_call(), pjsua_call_reinvite(), and pjsua_call_update(). Note that even this flag is applicable in pjsua_call_reinvite() and pjsua_call_update(), it will only take effect when the re-INVITE/UPDATE operation regenerates SDP offer, such as changing audio or video count in the call setting.

PJSUA_CALL_NO_SDP_OFFER = 8

Do not send SDP when sending INVITE or UPDATE. This flag is only valid for pjsua_call_make_call(), pjsua_call_reinvite()/reinvite2(), or pjsua_call_update()/update2(). For re-invite/update, specifying PJSUA_CALL_UNHOLD will take precedence over this flag.

PJSUA_CALL_REINIT_MEDIA = 16

Deinitialize and recreate media, including media transport. This flag is useful in IP address change situation, if the media transport address (or address family) changes, for example during IPv4/IPv6 network handover. This flag is only valid for pjsua_call_reinvite()/reinvite2(), or pjsua_call_update()/update2().

Warning: If the re-INVITE/UPDATE fails, the old media will not be reverted.

PJSUA_CALL_UPDATE_VIA = 32

Update the local invite session’s Via with the via address from the account. This flag is only valid for pjsua_call_set_hold2(), pjsua_call_reinvite() and pjsua_call_update(). Similar to the flag PJSUA_CALL_UPDATE_CONTACT above, this flag is useful in IP address change situation, after the local account’s Via has been updated (typically with re-registration).

PJSUA_CALL_UPDATE_TARGET = 64

Update dialog target to URI specified in pjsua_msg_data.target_uri. This flag is only valid for pjsua_call_set_hold(), pjsua_call_reinvite(), and pjsua_call_update(). This flag can be useful in IP address change scenario where IP version has been changed and application needs to update target IP address.

enum pjsua_call_vid_strm_op

This enumeration represents video stream operation on a call. See also pjsua_call_vid_strm_op_param for further info.

Values:

PJSUA_CALL_VID_STRM_NO_OP

No operation

PJSUA_CALL_VID_STRM_ADD

Add a new video stream. This will add a new m=video line to the media, regardless of whether existing video is/are present or not. This will cause re-INVITE or UPDATE to be sent to remote party.

PJSUA_CALL_VID_STRM_REMOVE

Remove/disable an existing video stream. This will cause re-INVITE or UPDATE to be sent to remote party.

PJSUA_CALL_VID_STRM_CHANGE_DIR

Change direction of a video stream. This operation can be used to activate or deactivate an existing video media. This will cause re-INVITE or UPDATE to be sent to remote party.

PJSUA_CALL_VID_STRM_CHANGE_CAP_DEV

Change capture device of a video stream. This will not send re-INVITE or UPDATE to remote party.

PJSUA_CALL_VID_STRM_START_TRANSMIT

Start transmitting video stream. This will cause previously stopped stream to start transmitting again. Note that no re-INVITE/UPDATE is to be transmitted to remote since this operation only operates on local stream.

PJSUA_CALL_VID_STRM_STOP_TRANSMIT

Stop transmitting video stream. This will cause the stream to be paused in TX direction, causing it to stop sending any video packets. No re-INVITE/UPDATE is to be transmitted to remote with this operation.

PJSUA_CALL_VID_STRM_SEND_KEYFRAME

Send keyframe in the video stream. This will force the stream to generate and send video keyframe as soon as possible. No re-INVITE/UPDATE is to be transmitted to remote with this operation.

Functions

void pjsua_call_setting_default(pjsua_call_setting *opt)

Initialize call settings.

Parameters
  • opt: The call setting to be initialized.

void pjsua_call_vid_strm_op_param_default(pjsua_call_vid_strm_op_param *param)

Initialize video stream operation param with default values.

Parameters
  • param: The video stream operation param to be initialized.

void pjsua_call_send_dtmf_param_default(pjsua_call_send_dtmf_param *param)

Initialize send DTMF param with default values.

Parameters
  • param: The send DTMF param to be initialized.

unsigned pjsua_call_get_max_count(void)

Get maximum number of calls configured in pjsua.

Return

Maximum number of calls configured.

unsigned pjsua_call_get_count(void)

Get number of currently active calls.

Return

Number of currently active calls.

pj_status_t pjsua_enum_calls(pjsua_call_id ids[], unsigned *count)

Enumerate all active calls. Application may then query the information and state of each call by calling pjsua_call_get_info().

Return

PJ_SUCCESS on success, or the appropriate error code.

Parameters
  • ids: Array of account IDs to be initialized.

  • count: In input, specifies the maximum number of elements. On return, it contains the actual number of elements.

pj_status_t pjsua_call_make_call(pjsua_acc_id acc_id, const pj_str_t *dst_uri, const pjsua_call_setting *opt, void *user_data, const pjsua_msg_data *msg_data, pjsua_call_id *p_call_id)

Make outgoing call to the specified URI using the specified account.

Return

PJ_SUCCESS on success, or the appropriate error code.

Parameters
  • acc_id: The account to be used.

  • dst_uri: URI to be put in the To header (normally is the same as the target URI).

  • opt: Optional call setting. This should be initialized using pjsua_call_setting_default().

  • user_data: Arbitrary user data to be attached to the call, and can be retrieved later.

  • msg_data: Optional headers etc to be added to outgoing INVITE request, or NULL if no custom header is desired.

  • p_call_id: Pointer to receive call identification.

pj_bool_t pjsua_call_is_active(pjsua_call_id call_id)

Check if the specified call has active INVITE session and the INVITE session has not been disconnected.

Return

Non-zero if call is active.

Parameters
  • call_id: Call identification.

pj_bool_t pjsua_call_has_media(pjsua_call_id call_id)

Check if call has an active media session.

Return

Non-zero if yes.

Parameters
  • call_id: Call identification.

pjsua_conf_port_id pjsua_call_get_conf_port(pjsua_call_id call_id)

Get the conference port identification associated with the call.

Return

Conference port ID, or PJSUA_INVALID_ID when the media has not been established or is not active.

Parameters
  • call_id: Call identification.

pjsua_vid_win_id pjsua_call_get_vid_win(pjsua_call_id call_id)

Get the video window associated with the call. Note that this function will only evaluate the first video stream in the call, to query any other video stream, use pjsua_call_get_info().

Return

Video window, or PJSUA_INVALID_ID when the media has not been established or is not active.

Parameters
  • call_id: Call identification.

pjsua_conf_port_id pjsua_call_get_vid_conf_port(pjsua_call_id call_id, pjmedia_dir dir)

Get the video conference port identification associated with the call. Note that this function will only evaluate the first video stream in the call, to query any other video stream, use pjsua_call_get_info().

Return

Conference port ID, or PJSUA_INVALID_ID when the media has not been established or is not active.

Parameters
  • call_id: Call identification.

  • dir: Port direction to be queried. Valid values are PJMEDIA_DIR_ENCODING and PJMEDIA_DIR_DECODING only.

pj_status_t pjsua_call_get_info(pjsua_call_id call_id, pjsua_call_info *info)

Obtain detail information about the specified call.

Return

PJ_SUCCESS on success, or the appropriate error code.

Parameters
  • call_id: Call identification.

  • info: Call info to be initialized.

pjsip_dialog_cap_status pjsua_call_remote_has_cap(pjsua_call_id call_id, int htype, const pj_str_t *hname, const pj_str_t *token)

Check if remote peer support the specified capability.

Return

PJSIP_DIALOG_CAP_SUPPORTED if the specified capability is explicitly supported, see for more info.

Parameters
  • call_id: Call identification.

  • htype: The header type to be checked, which value may be:

    • PJSIP_H_ACCEPT

    • PJSIP_H_ALLOW

    • PJSIP_H_SUPPORTED

  • hname: If htype specifies PJSIP_H_OTHER, then the header name must be supplied in this argument. Otherwise the value must be set to NULL.

  • token: The capability token to check. For example, if htype is PJSIP_H_ALLOW, then token specifies the method names; if htype is PJSIP_H_SUPPORTED, then token specifies the extension names such as “100rel”.

pj_status_t pjsua_call_set_user_data(pjsua_call_id call_id, void *user_data)

Attach application specific data to the call. Application can then inspect this data by calling pjsua_call_get_user_data().

Return

The user data.

Parameters
  • call_id: Call identification.

  • user_data: Arbitrary data to be attached to the call.

void *pjsua_call_get_user_data(pjsua_call_id call_id)

Get user data attached to the call, which has been previously set with pjsua_call_set_user_data().

Return

The user data.

Parameters
  • call_id: Call identification.

pj_status_t pjsua_call_get_rem_nat_type(pjsua_call_id call_id, pj_stun_nat_type *p_type)

Get the NAT type of remote’s endpoint. This is a proprietary feature of PJSUA-LIB which sends its NAT type in the SDP when nat_type_in_sdp is set in pjsua_config.

This function can only be called after SDP has been received from remote, which means for incoming call, this function can be called as soon as call is received as long as incoming call contains SDP, and for outgoing call, this function can be called only after SDP is received (normally in 200/OK response to INVITE). As a general case, application should call this function after or in on_call_media_state() callback.

Return

PJ_SUCCESS on success.

See

pjsua_get_nat_type(), nat_type_in_sdp

Parameters
  • call_id: Call identification.

  • p_type: Pointer to store the NAT type. Application can then retrieve the string description of the NAT type by calling pj_stun_get_nat_name().

pj_status_t pjsua_call_answer(pjsua_call_id call_id, unsigned code, const pj_str_t *reason, const pjsua_msg_data *msg_data)

Send response to incoming INVITE request. Depending on the status code specified as parameter, this function may send provisional response, establish the call, or terminate the call. See also pjsua_call_answer2().

Return

PJ_SUCCESS on success, or the appropriate error code.

Parameters
  • call_id: Incoming call identification.

  • code: Status code, (100-699).

  • reason: Optional reason phrase. If NULL, default text will be used.

  • msg_data: Optional list of headers etc to be added to outgoing response message. Note that this message data will be persistent in all next answers/responses for this INVITE request.

pj_status_t pjsua_call_answer2(pjsua_call_id call_id, const pjsua_call_setting *opt, unsigned code, const pj_str_t *reason, const pjsua_msg_data *msg_data)

Send response to incoming INVITE request with call setting param. Depending on the status code specified as parameter, this function may send provisional response, establish the call, or terminate the call. Notes about call setting:

  • if call setting is changed in the subsequent call to this function, only the first call setting supplied will applied. So normally application will not supply call setting before getting confirmation from the user.

  • if no call setting is supplied when SDP has to be sent, i.e: answer with status code 183 or 2xx, the default call setting will be used, check pjsua_call_setting for its default values.

Return

PJ_SUCCESS on success, or the appropriate error code.

Parameters
  • call_id: Incoming call identification.

  • opt: Optional call setting.

  • code: Status code, (100-699).

  • reason: Optional reason phrase. If NULL, default text will be used.

  • msg_data: Optional list of headers etc to be added to outgoing response message. Note that this message data will be persistent in all next answers/responses for this INVITE request.

pj_status_t pjsua_call_answer_with_sdp(pjsua_call_id call_id, const pjmedia_sdp_session *sdp, const pjsua_call_setting *opt, unsigned code, const pj_str_t *reason, const pjsua_msg_data *msg_data)

Same as pjsua_call_answer2() but this function will set the SDP answer first before sending the response.

Return

PJ_SUCCESS on success, or the appropriate error code.

Parameters
  • call_id: Incoming call identification.

  • sdp: SDP answer.

  • opt: Optional call setting.

  • code: Status code, (100-699).

  • reason: Optional reason phrase. If NULL, default text will be used.

  • msg_data: Optional list of headers etc to be added to outgoing response message. Note that this message data will be persistent in all next answers/responses for this INVITE request.

pj_status_t pjsua_call_hangup(pjsua_call_id call_id, unsigned code, const pj_str_t *reason, const pjsua_msg_data *msg_data)

Hangup call by using method that is appropriate according to the call state. This function is different than answering the call with 3xx-6xx response (with pjsua_call_answer()), in that this function will hangup the call regardless of the state and role of the call, while pjsua_call_answer() only works with incoming calls on EARLY state.

Return

PJ_SUCCESS on success, or the appropriate error code.

Parameters
  • call_id: Call identification.

  • code: Optional status code to be sent when we’re rejecting incoming call. If the value is zero, “603/Decline” will be sent.

  • reason: Optional reason phrase to be sent when we’re rejecting incoming call. If NULL, default text will be used.

  • msg_data: Optional list of headers etc to be added to outgoing request/response message.

pj_status_t pjsua_call_process_redirect(pjsua_call_id call_id, pjsip_redirect_op cmd)

Accept or reject redirection response. Application MUST call this function after it signaled PJSIP_REDIRECT_PENDING in the on_call_redirected() callback, to notify the call whether to accept or reject the redirection to the current target. Application can use the combination of PJSIP_REDIRECT_PENDING command in on_call_redirected() callback and this function to ask for user permission before redirecting the call.

Note that if the application chooses to reject or stop redirection (by using PJSIP_REDIRECT_REJECT or PJSIP_REDIRECT_STOP respectively), the call disconnection callback will be called before this function returns. And if the application rejects the target, the on_call_redirected() callback may also be called before this function returns if there is another target to try.

Return

PJ_SUCCESS on successful operation.

Parameters
  • call_id: The call ID.

  • cmd: Redirection operation to be applied to the current target. The semantic of this argument is similar to the description in the on_call_redirected() callback, except that the PJSIP_REDIRECT_PENDING is not accepted here.

pj_status_t pjsua_call_set_hold(pjsua_call_id call_id, const pjsua_msg_data *msg_data)

Put the specified call on hold. This will send re-INVITE with the appropriate SDP to inform remote that the call is being put on hold. The final status of the request itself will be reported on the on_call_media_state() callback, which inform the application that the media state of the call has changed.

Return

PJ_SUCCESS on success, or the appropriate error code.

Parameters
  • call_id: Call identification.

  • msg_data: Optional message components to be sent with the request.

pj_status_t pjsua_call_set_hold2(pjsua_call_id call_id, unsigned options, const pjsua_msg_data *msg_data)

Put the specified call on hold. This will send re-INVITE with the appropriate SDP to inform remote that the call is being put on hold. The final status of the request itself will be reported on the on_call_media_state() callback, which inform the application that the media state of the call has changed.

Return

PJ_SUCCESS on success, or the appropriate error code.

Parameters
  • call_id: Call identification.

  • options: Bitmask of pjsua_call_flag constants. Currently, only the flag PJSUA_CALL_UPDATE_CONTACT can be used.

  • msg_data: Optional message components to be sent with the request.

pj_status_t pjsua_call_reinvite(pjsua_call_id call_id, unsigned options, const pjsua_msg_data *msg_data)

Send re-INVITE request or release hold. The final status of the request itself will be reported on the on_call_media_state() callback, which inform the application that the media state of the call has changed.

Return

PJ_SUCCESS on success, or the appropriate error code.

Parameters
  • call_id: Call identification.

  • options: Bitmask of pjsua_call_flag constants. Note that for compatibility, specifying PJ_TRUE here is equal to specifying PJSUA_CALL_UNHOLD flag.

  • msg_data: Optional message components to be sent with the request.

pj_status_t pjsua_call_reinvite2(pjsua_call_id call_id, const pjsua_call_setting *opt, const pjsua_msg_data *msg_data)

Send re-INVITE request or release hold. The final status of the request itself will be reported on the on_call_media_state() callback, which inform the application that the media state of the call has changed.

Return

PJ_SUCCESS on success, or the appropriate error code.

Parameters
  • call_id: Call identification.

  • opt: Optional call setting, if NULL, the current call setting will be used. Note that to release hold or update contact or omit SDP offer, this parameter cannot be NULL and it must specify appropriate flags, e.g: PJSUA_CALL_UNHOLD, PJSUA_CALL_UPDATE_CONTACT, PJSUA_CALL_NO_SDP_OFFER.

  • msg_data: Optional message components to be sent with the request.

pj_status_t pjsua_call_update(pjsua_call_id call_id, unsigned options, const pjsua_msg_data *msg_data)

Send UPDATE request.

Return

PJ_SUCCESS on success, or the appropriate error code.

Parameters
  • call_id: Call identification.

  • options: Bitmask of pjsua_call_flag constants.

  • msg_data: Optional message components to be sent with the request.

pj_status_t pjsua_call_update2(pjsua_call_id call_id, const pjsua_call_setting *opt, const pjsua_msg_data *msg_data)

Send UPDATE request.

Return

PJ_SUCCESS on success, or the appropriate error code.

Parameters
  • call_id: Call identification.

  • opt: Optional call setting, if NULL, the current call setting will be used. Note that to release hold or update contact or omit SDP offer, this parameter cannot be NULL and it must specify appropriate flags, e.g: PJSUA_CALL_UNHOLD, PJSUA_CALL_UPDATE_CONTACT, PJSUA_CALL_NO_SDP_OFFER.

  • msg_data: Optional message components to be sent with the request.

pj_status_t pjsua_call_xfer(pjsua_call_id call_id, const pj_str_t *dest, const pjsua_msg_data *msg_data)

Initiate call transfer to the specified address. This function will send REFER request to instruct remote call party to initiate a new INVITE session to the specified destination/target.

If application is interested to monitor the successfulness and the progress of the transfer request, it can implement on_call_transfer_status() callback which will report the progress of the call transfer request.

Return

PJ_SUCCESS on success, or the appropriate error code.

Parameters
  • call_id: The call id to be transferred.

  • dest: URI of new target to be contacted. The URI may be in name address or addr-spec format.

  • msg_data: Optional message components to be sent with the request.

pj_status_t pjsua_call_xfer_replaces(pjsua_call_id call_id, pjsua_call_id dest_call_id, unsigned options, const pjsua_msg_data *msg_data)

Initiate attended call transfer. This function will send REFER request to instruct remote call party to initiate new INVITE session to the URL of dest_call_id. The party at dest_call_id then should “replace” the call with us with the new call from the REFER recipient.

Return

PJ_SUCCESS on success, or the appropriate error code.

Parameters
  • call_id: The call id to be transferred.

  • dest_call_id: The call id to be replaced.

  • options: Application may specify PJSUA_XFER_NO_REQUIRE_REPLACES to suppress the inclusion of “Require: replaces” in the outgoing INVITE request created by the REFER request.

  • msg_data: Optional message components to be sent with the request.

pj_status_t pjsua_call_dial_dtmf(pjsua_call_id call_id, const pj_str_t *digits)

Send DTMF digits to remote using RFC 2833 payload formats. Use pjsua_call_send_dtmf() to send DTMF using SIP INFO or other method in pjsua_dtmf_method. App can use on_dtmf_digit() or on_dtmf_digit2() callback to monitor incoming DTMF.

Return

PJ_SUCCESS on success, or the appropriate error code.

Parameters
  • call_id: Call identification.

  • digits: DTMF string digits to be sent as described on RFC 2833 section 3.10. If PJMEDIA_HAS_DTMF_FLASH is enabled, character ‘R’ is used to represent the event type 16 (flash) as stated in RFC 4730.

pj_status_t pjsua_call_send_dtmf(pjsua_call_id call_id, const pjsua_call_send_dtmf_param *param)

Send DTMF digits to remote. Use this method to send DTMF using the method in pjsua_dtmf_method. This method will call pjsua_call_dial_dtmf() when sending DTMF using PJSUA_DTMF_METHOD_RFC2833. Note that on_dtmf_digit() callback can only monitor incoming DTMF using RFC 2833. App can use on_dtmf_digit2() to monitor incoming DTMF using the method in pjsua_dtmf_method. Note that on_dtmf_digit() will not be called once on_dtmf_digit2() is implemented.

Return

PJ_SUCCESS on success, or the appropriate error code.

Parameters
  • call_id: Call identification.

  • param: The send DTMF parameter.

pj_status_t pjsua_call_send_im(pjsua_call_id call_id, const pj_str_t *mime_type, const pj_str_t *content, const pjsua_msg_data *msg_data, void *user_data)

Send instant messaging inside INVITE session.

Return

PJ_SUCCESS on success, or the appropriate error code.

Parameters
  • call_id: Call identification.

  • mime_type: Optional MIME type. If NULL, then “text/plain” is assumed.

  • content: The message content.

  • msg_data: Optional list of headers etc to be included in outgoing request. The body descriptor in the msg_data is ignored.

  • user_data: Optional user data, which will be given back when the IM callback is called.

pj_status_t pjsua_call_send_typing_ind(pjsua_call_id call_id, pj_bool_t is_typing, const pjsua_msg_data *msg_data)

Send IM typing indication inside INVITE session.

Return

PJ_SUCCESS on success, or the appropriate error code.

Parameters
  • call_id: Call identification.

  • is_typing: Non-zero to indicate to remote that local person is currently typing an IM.

  • msg_data: Optional list of headers etc to be included in outgoing request.

pj_status_t pjsua_call_send_request(pjsua_call_id call_id, const pj_str_t *method, const pjsua_msg_data *msg_data)

Send arbitrary request with the call. This is useful for example to send INFO request. Note that application should not use this function to send requests which would change the invite session’s state, such as re-INVITE, UPDATE, PRACK, and BYE.

Return

PJ_SUCCESS on success, or the appropriate error code.

Parameters
  • call_id: Call identification.

  • method: SIP method of the request.

  • msg_data: Optional message body and/or list of headers to be included in outgoing request.

void pjsua_call_hangup_all(void)

Terminate all calls. This will initiate pjsua_call_hangup() for all currently active calls.

pj_status_t pjsua_call_dump(pjsua_call_id call_id, pj_bool_t with_media, char *buffer, unsigned maxlen, const char *indent)

Dump call and media statistics to string.

Return

PJ_SUCCESS on success.

Parameters
  • call_id: Call identification.

  • with_media: Non-zero to include media information too.

  • buffer: Buffer where the statistics are to be written to.

  • maxlen: Maximum length of buffer.

  • indent: Spaces for left indentation.

int pjsua_call_get_vid_stream_idx(pjsua_call_id call_id)

Get the media stream index of the default video stream in the call. Typically this will just retrieve the stream index of the first activated video stream in the call. If none is active, it will return the first inactive video stream.

Return

The media stream index or -1 if no video stream is present in the call.

Parameters
  • call_id: Call identification.

pj_bool_t pjsua_call_vid_stream_is_running(pjsua_call_id call_id, int med_idx, pjmedia_dir dir)

Determine if video stream for the specified call is currently running (i.e. has been created, started, and not being paused) for the specified direction.

Return

PJ_TRUE if stream is currently running for the specified direction.

Parameters
  • call_id: Call identification.

  • med_idx: Media stream index, or -1 to specify default video media.

  • dir: The direction to be checked.

pj_status_t pjsua_call_set_vid_strm(pjsua_call_id call_id, pjsua_call_vid_strm_op op, const pjsua_call_vid_strm_op_param *param)

Add, remove, modify, and/or manipulate video media stream for the specified call. This may trigger a re-INVITE or UPDATE to be sent for the call.

Return

PJ_SUCCESS on success or the appropriate error.

Parameters
  • call_id: Call identification.

  • op: The video stream operation to be performed, possible values are pjsua_call_vid_strm_op.

  • param: The parameters for the video stream operation, or NULL for the default parameter values (see pjsua_call_vid_strm_op_param).

pj_status_t pjsua_call_get_stream_info(pjsua_call_id call_id, unsigned med_idx, pjsua_stream_info *psi)

Get media stream info for the specified media index.

Return

PJ_SUCCESS on success or the appropriate error.

Parameters
  • call_id: The call identification.

  • med_idx: Media stream index.

  • psi: To be filled with the stream info.

pj_status_t pjsua_call_get_stream_stat(pjsua_call_id call_id, unsigned med_idx, pjsua_stream_stat *stat)

Get media stream statistic for the specified media index.

Return

PJ_SUCCESS on success or the appropriate error.

Parameters
  • call_id: The call identification.

  • med_idx: Media stream index.

  • psi: To be filled with the stream statistic.

pj_status_t pjsua_call_get_med_transport_info(pjsua_call_id call_id, unsigned med_idx, pjmedia_transport_info *t)

Get media transport info for the specified media index.

Return

PJ_SUCCESS on success or the appropriate error.

Parameters
  • call_id: The call identification.

  • med_idx: Media stream index.

  • t: To be filled with the transport info.

struct pjsua_call_media_info
#include <pjsua.h>

Call media information.

struct pjsua_call_info
#include <pjsua.h>

This structure describes the information and current status of a call.

struct pjsua_stream_info
#include <pjsua.h>

Media stream info.

struct pjsua_stream_stat
#include <pjsua.h>

Media stream statistic.

struct pjsua_call_vid_strm_op_param
#include <pjsua.h>

Parameters for video stream operation on a call. Application should use pjsua_call_vid_strm_op_param_default() to initialize this structure with its default values.

struct pjsua_call_send_dtmf_param
#include <pjsua.h>

Parameters for sending DTMF. Application should use pjsua_call_send_dtmf_param_default() to initialize this structure with its default values.