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如何在 Android 應用程序中添加 g729 編解碼器?

[英]How to add g729 codec in Android application?

我正在開發一個用於撥打和接聽電話的 SIP 應用程序,我想在我的應用程序中添加 G729 編解碼器。

目前我正在對開源項目SipDroid進行分析。 如果我想讓該應用程序支持 G729 編解碼器,該怎么做?

org.sipdroid.codecs package 中有一個不同的編解碼器配置文件。如何為 G729 編解碼器創建這種 .java 文件?

任何建議和回應將不勝感激。

星號的日志消息

Found RTP audio format 101
Found audio description format telephone-event for ID 101
Found RTP video format 103
Found video description format h263-1998 for ID 103
Capabilities: us - 0x100 (g729), peer - audio=0x0 (nothing)/video=0x100000 (h263p)/text=0x0 (nothing), combined - 0x0 (nothing)
Non-codec capabilities (dtmf): us - 0x1 (telephone-event|), peer - 0x1 (telephone-event|), combined - 0x1 (telephone-event|)
[Apr  9 18:00:25] NOTICE[3813]: chan_sip.c:9187 process_sdp: **No compatible codecs**, not accepting this offer!

開發計划署

To: <sip:5003@192.168.1.17>
From: <sip:5004@192.168.1.17>;tag=z9hG4bK80811693
Call-ID: 082004294635@10.0.2.15
CSeq: 2 INVITE
Contact: <sip:5004@10.0.2.15:36252;transport=udp>
Expires: 3600
User-Agent: MySipdroid. !/2.4 beta/sdk
Authorization: Digest username="5004", realm="asterisk", nonce="6264308a", uri="sip:5003@192.168.1.17", algorithm=MD5, response="fb6dfb528d362657ef01458f96653adb"
Content-Length: 137
Content-Type: application/sdp

v=0
o=5004@192.168.1.17 0 0 IN IP4 10.0.2.15
s=Session SIP/SDP
c=IN IP4 10.0.2.15
t=0 0
m=audio 21000 RTP/AVP
a=fmtp:18 annexb=no
<------------->
--- (13 headers 7 lines) ---
Sending to 192.168.1.17:35370 (NAT)
Using INVITE request as basis request - 082004294635@10.0.2.15
Found peer '5004' for '5004' from 192.168.1.17:35370
  == Using SIP RTP CoS mark 5
Capabilities: us - 0x100 (g729), peer - audio=0x0 (nothing)/video=0x0 (nothing)/text=0x0 (nothing), combined - 0x0 (nothing)
Non-codec capabilities (dtmf): us - 0x1 (telephone-event|), peer - 0x0 (nothing), combined - 0x0 (nothing)
[Apr 10 12:01:05] NOTICE[3524]: chan_sip.c:9187 process_sdp: No compatible codecs, not accepting this offer!

顯示翻譯結果

core show translation
         Translation times between formats (in microseconds) for one second of data
          Source Format (Rows) Destination Format (Columns)

           g723   gsm  ulaw  alaw g726aal2 adpcm  slin lpc10  g729 speex  ilbc  g726  g722 siren7 siren14 slin16  g719 speex16 testlaw
     g723     -     -     -     -        -     -     -     -     -     -     -     -     -      -       -      -     -       -       -
      gsm     -     -  1001  1001     3000  2000  1000  3000  3999     -  8999  3999  1001      -       -   1002     -       -    1001
     ulaw     -  2000     -     1     2001  1001     1  2001  3000     -  8000  3000     2      -       -      3     -       -       2
     alaw     -  2000     1     -     2001  1001     1  2001  3000     -  8000  3000     2      -       -      3     -       -       2
 g726aal2     -  2999  1001  1001        -  2000  1000  3000  3999     -  8999  3999  1001      -       -   1002     -       -    1001
    adpcm     -  2000     2     2     2001     -     1  2001  3000     -  8000  3000     2      -       -      3     -       -       2
     slin     -  1999     1     1     2000  1000     -  2000  2999     -  7999  2999     1      -       -      2     -       -       1
    lpc10     -  2999  1001  1001     3000  2000  1000     -  3999     -  8999  3999  1001      -       -   1002     -       -    1001
     g729     -  2999  1001  1001     3000  2000  1000  3000     -     -  8999  3999  1001      -       -   1002     -       -    1001
    speex     -     -     -     -        -     -     -     -     -     -     -     -     -      -       -      -     -       -       -
     ilbc     -  2998  1000  1000     2999  1999   999  2999  3998     -     -  3998  1000      -       -   1001     -       -    1000
     g726     -  2999  1001  1001     3000  2000  1000  3000  3999     -  8999     -  1001      -       -   1002     -       -    1001
     g722     -  2000     2     2     2001  1001     1  2001  3000     -  8000  3000     -      -       -      1     -       -       2
   siren7     -     -     -     -        -     -     -     -     -     -     -     -     -      -       -      -     -       -       -
  siren14     -     -     -     -        -     -     -     -     -     -     -     -     -      -       -      -     -       -       -
   slin16     -  3000  1002  1002     3001  2001  1001  3001  4000     -  9000  4000  1000      -       -      -     -       -    1002
     g719     -     -     -     -        -     -     -     -     -     -     -     -     -      -       -      -     -       -       -
  speex16     -     -     -     -        -     -     -     -     -     -     -     -     -      -       -      -     -       -       -
  testlaw     -  2000     2     2     2001  1001     1  2001  3000     -  8000  3000     2      -       -      3     -       -       -

配置文件

[5004]
type=friend
username=5004
secret=5004
host=dynamic
context=testcontext
nat=yes
disallow=all
allow=g729
qualify=yes
callerid="919999121312"<5004>

您的星號日志看起來非常支持編解碼器,但是您的客戶端 android 應用程序需要 g729 編碼器(目前似乎是商業許可證),如果您有幸獲得編解碼器的開源許可證,請告訴我.

許可

G.729 包括多家公司的專利,並獲得 Sipro Lab Telecom 的許可。 Sipro Lab Telecom 是 G.729 技術和專利池的授權知識產權許可管理員。[3][4][5][6] 在許多國家/地區,使用 G.729 可能需要支付許可費和/或特許權使用費。[5]

資料來源: http://en.wikipedia.org/wiki/G.729

問候。

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