Changes between Version 3 and Version 4 of Intel_IPP_Codecs


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Timestamp:
Aug 19, 2008 9:47:44 AM (11 years ago)
Author:
bennylp
Comment:

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  • Intel_IPP_Codecs

    v3 v4  
    77 
    88The Intel IPP can be used with PJMEDIA library to provide the following codecs: 
    9  * '''AMR NB''' (4.75 to 12.2 Kbps) 
    10  * '''AMB WB''' (6.6 to 23.85 Kbps 
    11  * '''G.722.1''' (16/24/32/40 Kbps) 
    12  * '''G.723.1''' (5.3/6.3 Kbps) 
    13  * '''G.726''' (16/24/32/40 Kbps) 
    14  * '''G.728''' (16 Kbps) 
    15  * '''G.729A''' (8 Kbps) with Annex B, and annex D/E support for decoding only. 
     9 
     10 || '''Codec''' || '''Bitrate (Kbps)''' || '''Clock rate/'''[[BR]]'''frame ptime''' || '''default'''[[BR]]'''frames/pkt''' || '''default'''[[BR]]'''bitrate''' || '''VAD/DTX'''  || '''PLC'''      || '''Note''' || 
     11 || '''AMR NB'''     || 4.75 to 12.2           || 8000/160      || 4 || 5900  || internal       || internal       ||                  || 
     12 || '''AMR WB'''     || 6.6 to 23.85           || 16000/320     || 1 || 15850 || internal       || internal       ||                  || 
     13 || '''G.722.1'''    || 16, 24, 32, 40         || 16000/320     || 1 || 16000 || pjmedia        || internal       ||                  || 
     14 || '''G.723.1'''    || 5.3, 6.3               || 8000/240      || 1 || 5300  || internal       || internal       ||                  || 
     15 || '''G.726'''      || 16, 24, 32, 40         || 8000/80       || 2 || -     || pjmedia        || pjmedia        || The bitrate is negotiated in SDP || 
     16 || '''G.728'''      || 16                     || 8000/80       || 2 || 16000 || pjmedia        || internal       ||                  || 
     17 || '''G.729A'''     || 8                      || 8000/80       || 2 || 8000  || pjmedia        || internal       || 1) G.729 VAD (Annex B) is currently disabled.[[BR]] 2) Annex D and Annex E is supported for receive direction. || 
    1618 
    1719 
     
    2325 * Intel IPP samples 
    2426 
    25 We tested with Intel IPP version 5.3. You may be able to use different Intel IPP version with PJMEDIA, however this has not been tested. As usual, your mileage may vary. 
     27We tested with Intel IPP version 5.3. You may be able to use different Intel IPP version with PJMEDIA, however we have not tested this.  
    2628 
    2729Note that the use of Intel IPP may require license, both from Intel and the parties who own the royalty of the codec. 
     
    8183 }}} 
    8284 
     85== Using in Application == 
     86 
     87=== Codec Registration === 
     88 
     89Before application can use any of the IPP codecs above, the IPP codec factory must be registered to the codec manager. If application is using PJSUA-LIB, this will be done automatically by PJSUA-LIB. If application is using PJMEDIA directly, then it must register the IPP codec factory by calling: 
     90 
     91 {{{ 
     92     pjmedia_codec_ipp_init(media_endpt); 
     93 }}} 
     94 
     95Or alternatively, to register all codec factories that are enabled at compile time to the codec manager: 
     96 
     97 {{{ 
     98     pjmedia_init_all_codecs(media_endpt); 
     99 }}} 
     100 
     101Note that if the use of {{{pjmedia_init_all_codecs}}} to register all codec will result in linking to all codec libraries that are enabled at compile time and this will increase application's footprint/executable size. 
     102 
     103 
     104 
     105