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  1. #1
    Super Contributor
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    Question opencore amr for decoding? (Port to Symbian?)

    Hello,

    I would like here to ask about the possibility of usage opencore amr for decoding AMR to PCM on S60 3rd.

    I am using APS to capture the Audio in AMR codec on S60 3rd FP1 (Nokia E71).And the stream needs to converted to PCM.

    I choice the AMR codec, instead of G711, because the audio quality is better.
    But I need to do DSP with audio, so AMR should be converted to PCM16.
    I know there is CMMFCodec, which can be used for converting. But I don't know if it can work during APS usage.


    I have found the opencore amr project, and would like ask here, if there is anyone has worked with it on Symbian? How is the converting time from AMR to PCM? How difficult should the porting be?


    With your answer and help, it can save me lots of time.

    Thank you.

    Regards,

    Pai
    Symbian && Android && iPhoneOS

  2. #2
    Super Contributor
    Join Date
    Jun 2005
    Location
    Berlin
    Posts
    721

    Re: opencore amr for decoding? (Port to Symbian?)

    Hello,


    For a test, I have tried to use CMMFCodec to decode AMR during capturing audio with Audio Proxy Server, and it works. (I thought, that CMMFCodec could be a Hardware Converter, but it looks like not!)

    So I don't need opencore amr for my purpose any more.

    For 3rd Edition FP1, I have copied the needed head files and library from 3rd MR to FP1. And CMMFCodec is tested on Nokia E71.

    with help of (convert amr to pcm with CMMFCodec:
    http://discussion.forum.nokia.com/fo...ad.php?t=56269


    Regards,

    Pai
    Symbian && Android && iPhoneOS

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