java - Android: Send .wav to SIP-Phone via RTP (G.711 PCMU) very noisy, crackling sound based on SipDroid/MjSIP -


i want transmit(send-only) .wav file android softphone (x-lite) called person on x-lite can hear sound of .wav file.

the scenario follows: android , x-lite both in same wlan , both connected freeswitch. can call x-lite android phone. if call accepted on x-lite android sends .wav file , can see in wireshark rtp pakets (g.711 pcmu) send phone x-lite. can hear sound not 1 expect. instead crackling, noisy , beeps.

so there problem in sdp send x-lite?

v=0 o=sip:1002@192.168.2.110 0 0 in ip4 192.168.2.100 s=mysession c=in ip4 192.168.2.110 t=0 0 m=audio 8000 rtp/avp 0 8 101 a=rtpmap:101 telephone-event/8000

or problem way send .wav?

datagramsocket socket = null; rtpstreamsender sender = null; int port =8000; int payload_type = 0; int framesize = 64; int framerate =32;  socket = new datagramsocket(port); fileinputstream audioinput = new fileinputstream(f); //f .wav sender = new rtpstreamsender(audioinput, true, payload_type, framerate, framesize, remoteaddress, remoteport); sender.setsyncadj(2); sender.start();

if follow udp stream in wireshark beginning looks this:

........m...riff....wavefmt ........d...........data0...............................m..........................................................................>m..........................................................................]m..........................................................................|m..................... ....................... ..... .......................m........... ......................... .....................................m........................................................... ...............m............................................... .......+...5...8...........m...6...+.'...-...(.....#...-...+... ........................... ...........m...................................................................... ...6m......... ... ............................................................um...........-...1...0...,...)...'...0...?...=.#.'.$. .!....................tm.............................$....................... .....&.......... ....m........................... ...................................,...........m...=...i...w...j.../.....................#...<...t...z...b.................m.....#...5...5......................"... ..... .......5.w.l...n...........m...c...8.m.'.r...>...o...p...~...e...i...3................................m................................................... .......................m... ...5...r...l...3.../...b...z...b......x...b...!.........{............mm.........$...2...(........................................................lm...............................-.!.r.j.].s.z.t.u.c.b..q.v.....y...........m...h...v...y...c...l.f.e.*.............................(...e...x...........m...j...5.h.7.5.^...~...j.................(.=.h.........f.....q...(.........m.....e.x...{...l.2...............:.......q.......v........... .............m.................0...s...k...7.+.b.....................&...o...]...........m...r.b.......w...8.q...?...a...>...................).../.

so guess not empty. after beginning of signal, signal send x-lite android , again pakets android x-lite... , on

can give me hint why can't hear sound?

(other solutions welcome) edit:

this implementation of rtpstramsender mjsip: http://pastebin.com/xu4edeex

edit 2: changed sdp in rfc to:

     m=audio 54874 rtp/avp 96 97 0 8      a=rtpmap:96 pcmu-wb/16000      a=rtpmap:97 pcma-wb/16000      a=rtpmap:0 pcmu/8000      a=rtpmap:8 pcma/8000

but nothing hapened. changed framesize , framerate crackling gets faster or slower

edit 3: implementation of rtppacket: http://pastebin.com/tdlr5cyf

my suspicion packetizing.

this rfc tells how suppoed done: rfc 5391

turned out helped little bit, not way. if can , works, please accept answer rather mine.


Comments

Post a Comment

Popular posts from this blog

c# - Send Image in Json : 400 Bad request -

from android trying send image class of data, iis webservice. (c#) the problem 400 bad request . the image being encoded base64 . , placed json rest of class elements. my guess base64 not valid inside json. server not understand it. if set string "" , post accepted fine. so question is, how make base64 valid within json array? ( tried url.encode no success). or how should send image android webservice? gson gson = new gson(); string json = gson.tojson(record); // record has param { string base64photo } how big image? i'm pretty sure surpassing iis json size limit (default 4 mb). check http://geekswithblogs.net/frankw/archive/2008/08/05/how-to-configure-maxjsonlength-in-asp.net-ajax-applications.aspx or http://www.webtrenches.com/post.cfm/iis7-file-upload-size-limits good luck!
Read more

javascript - addthis share facebook and google+ url -

i attempting use addthis create simple url shares whichever current page user on when click share button. of right now, have twitter working. when user clicks, able see url populated in tweet box. when user clicks facebook or google+, url doesn't seem show in share box. <ul class="addthis_toolbox addthis_default_style "> <li><a class="addthis_button_facebook"><img src="/img/facebook-social.png" width="20" height="20" border="0" alt="share" /></a></li> <li><a class="addthis_button_twitter"><img src="/img/twitter-social.png" width="20" height="20" border="0" alt="share" /></a></li> <li><a class="addthis_button_google_plusone_share"><img src="/img/google-social.png" width="20" height="20" border="0" alt="s...
Read more

ios - Show keyboard with UITextField in the input accessory view -

i have buttona , when buttona clicked, want keyboard show uitextfield in inputaccessoryview. there way have keyboard show manually , set inputaccessoryview without having uitextfield initially? thanks. you cannot summon keyboard without object can become first responder. there 2 ways work around: subclass uiview , implement uikeyinput protocol in it. example: in .h file: @interface inputobject : uiview<uikeyinput> @property (nonatomic, copy) nsstring *text; @property (nonatomic, strong) uiview *inputaccessoryview; // must override inputaccessoryview , since it's readonly default @end in .m file, implement protocol: - (bool)canbecomefirstresponder { return yes; } - (bool)hastext { return [self.text length]; } - (void)inserttext:(nsstring *)text { nsstring *selftext = self.text ? self.text : @""; self.text = [selftext stringbyappendingstring:text]; [[nsnotificationcenter defaultcenter] postnotificationname:kinputobjec...
Read more