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  1. #1
    Registered User
    Join Date
    Dec 2006
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    7

    Red face Implement Media codec (JSR-135/234) to use with SIP in J2ME

    Hi,
    I am working on JME application that include Internet telephone calls using SIP. It requires
    1. SIP stack
    2. Media Stack

    - SIP stack (JSR-180) is available in Nokia S60 handset and SonyEricsson (JP-8) handset; and we can use it easily.

    - My problem is to implement Media stack using (JSR-135/234); Media stack require
    1. Capture audio voice stream.
    2. Encode packets using appropriate codec.
    3. Decode packets received from SIP server.
    4. Play sound for user.

    Step 1 and 4 is looking simple. for step 2 and 3 we need media codec to perform encoding/decoding stream.

    Please provide any information about existing codec for this.


    thanx in advanced.

  2. #2
    Registered User
    Join Date
    Aug 2007
    Posts
    5

    Re: Implement Media codec (JSR-135/234) to use with SIP in J2ME

    have you seen jspeex? its java binding of Speex codec. as the website said it "It provides both the decoder and the encoder in pure Java"

    http://jspeex.sourceforge.net/

  3. #3
    Registered User
    Join Date
    Apr 2005
    Location
    Barcelona
    Posts
    1,678

    Re: Implement Media codec (JSR-135/234) to use with SIP in J2ME

    It's been a while since I've worked with midp, but things like low-level access to audio hw & real time don't get along well with j2me, and I doubt there's any jsr for this. You'll have to rely on Symbian C++.

  4. #4
    Registered User
    Join Date
    Dec 2008
    Posts
    2

    Re: Implement Media codec (JSR-135/234) to use with SIP in J2ME

    Hi!
    did you overcome your problem? Is it possible to develop such application?

  5. #5
    Registered User
    Join Date
    Dec 2008
    Posts
    2

    Re: Implement Media codec (JSR-135/234) to use with SIP in J2ME

    Hi!
    Did you overcome your problem? Is it possible to develop such application in j2me?

  6. #6
    Registered User
    Join Date
    Mar 2009
    Posts
    21

    Re: Implement Media codec (JSR-135/234) to use with SIP in J2ME

    I have similar requirement...
    How do I develop such functionality in j2me?

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