[Freeswitch-dev] Howto keep control over read and write frames in my own module after initiating a new call

Achim Stamm stamm at lyth.de
Tue Jul 27 04:25:42 PDT 2010


Hi,

thanks for your reply.
I found a Core Library called Media Bugs with several functions.
How can i use this functions ?
Can you give me an example using media bugs.
Whats the difference between using hooks and using media bugs?

regards

Achim Stamm


Anthony Minessale schrieb:
> You can't, that's all wrong.
>
> look for media bugs.
>
>
> On Mon, Jul 26, 2010 at 5:08 AM, Achim Stamm <stamm at lyth.de 
> <mailto:stamm at lyth.de>> wrote:
>
>     Hello!
>
>     I have following problem:
>     My current session is connected to my own module which uses the
>     freeswitch API doing Read and write frames in the while loop.
>     I want bridge my current session to make an outbound call within
>     my while loop.
>     The calling of method bridge runs in a thread using modificated bgapi.
>     The outbounded phone rings and after picking it up the reading and
>     writing of frames is done only by freeswitch core and not any more
>     in my while
>     loop. But after bridging I want to keep control over reading and
>     writing
>     frames.
>
>     How can i gain control back or keep it over reading and writing
>     frames after bridging ?
>
>     A solution may be to run an extension instead of making the call
>     in while loop.
>     How can i execute an extension with
>     switch_core_session_execute_exten ?
>
>     Here is a snippet of my Dialplan:
>
>     <extension name="Caller">
>          <condition field="destination_number" expression="^1000$">
>                 <action application="answer"/>
>                     <action application="info"/>
>                     <action application="set"
>     data="hangup_after_bridge=false"/>
>                     <action application="set"
>     data="ignore_early_media=true"/>
>                     <action application="myapplication"
>     data="DoingReadAndWriteFrames"/>
>          </condition>
>        </extension>
>
>     Here is a snippet of my DoingReadAndWriteFrames from myapplication:
>
>     static switch_status_t DoingBridge(switch_core_session_t *session,
>     switch_input_args_t *args)
>     {
>            switch_codec_t codec = { 0 };
>            switch_status_t status;
>            switch_frame_t *read_frame;
>            switch_channel_t *channel =
>     switch_core_session_get_channel(session);
>            switch_stream_handle_t dstream = { 0 };
>
>            // Bridge to phone in a thread:
>            SWITCH_STANDARD_STREAM(dstream);
>            mybg_bridge("user/1012 at 192.168.1.30
>     <mailto:1012 at 192.168.1.30>" ,60, session, &dstream);
>
>            while (switch_channel_ready(channel))
>            {
>                    // Read Frame :
>                    status = switch_core_session_read_frame(session,
>     &read_frame, SWITCH_IO_FLAG_NONE, 0);
>                    ...
>                  
>      CControlThirdPartyApplication::getInstance().setAudio(session,vucInAudio);
>
>                    // Write Frame :
>                    vucOutAudio =
>     CControlThirdPartyApplication::getInstance().getAudio(session);
>                    ...
>                    switch_status_t tstatus_caller =
>     switch_core_session_write_frame(session, read_frame,
>     SWITCH_IO_FLAG_NONE, 0);
>
>                    // Make Outbound Call:
>                    string dialNumber =
>     CControlThirdPartyApplication::getInstance().getDialNumber(session);
>                    if (!dialNumber.empty())
>                    {
>                            // @ ToDo Dial outbound:
>                            // execute another extension ("Test"), that
>     is doing our outbound call ??:
>                          
>      switch_core_session_execute_exten(session,"Test","XML","default");
>                            // or Bridge to dialNumber in a thread:
>                            //SWITCH_STANDARD_STREAM(dstream);
>                            dialNumber = "user/" + dialNumber;
>                            dialNumber = dialNumber + "@192.168.1.30
>     <http://192.168.1.30>";
>                            mybg(dialNumber.c_str(), 60, session,
>     &dstream);
>                            // if dialNumber pickup, than freeswitch
>     core read and write frames ?? I want control over read and write frame
>                    }
>            }
>     }
>
>     regards
>
>     Achim Stamm
>
>     --
>     Achim Stamm, Dipl.-Inform. (FH)
>
>
>     Lyncker & Theis GmbH
>     Wilhelmstr. 16
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>     Germany
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> -- 
> Anthony Minessale II
>
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-- 
Achim Stamm, Dipl.-Inform. (FH)


Lyncker & Theis GmbH
Wilhelmstr. 16
65185 Wiesbaden
Germany

Fon +49 611/9006951
Fax +49 611/9406125


Handelsregister: HRB 23156 Amtsgericht Wiesbaden
Steuernummer: 04323897052
USt-IdNr.: DE255806399

Geschäftsführer:
Filip Lyncker,
Armin Theis 




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