java - Live Streaming of a music file in Android -


for learning purpose, tried creating client , server. 1 person sends udp packets of music file , other person receives it. created such app , packets being transmitted wanted. problem when after receiving packet, try play it, sound played nothing noise. meaningless sound comes speakers.

to test process of sending , receiving packets, tried replacing audio file text file , check contents of packets @ receiver side. noticed packets received highly random. mean not in correct order.

i know in udp packets can reach destination in order there no error control or anything. question how should correct sound out of speakers. if packets transmitted in order abc , received in order bca sound never correct. there way can convert byte array of packets meaningful sound.

i know one solution use tcp tcp not live streaming. for purposes live streaming , video conferencing, udp used. correct way gather , play received packets. appreciated.

code sender:

inputstream songinputstream = new fileinputstream("/sdcard/song.mp3"); byte[] buffer = new byte[1024];  try {     clientsocket = new datagramsocket(); } catch (socketexception e1) {     // todo auto-generated catch block     e1.printstacktrace(); } while ((songinputstream.read(buffer, 0, buffer.length)) > -1) {                      datagrampacket packet = new datagrampacket(buffer,                             buffer.length, hostinet, serverport);                     try {                         clientsocket.send(packet);                         log.e(tag, "packet sent "                                 + serviceinfo.getservicename().tostring());                     } catch (ioexception e) {                         // todo auto-generated catch block                         e.printstacktrace(); }

code on receiver side:

byte[] buffer = new byte[1024]; datagrampacket packet = new datagrampacket(buffer, buffer.length); {             try {                 datagramsocket.receive(packet);                 log.e(tag,                         "recieved packet ip "                                 + packet.getaddress().tostring()                                 + " , port = "                                 + packet.getport()                                 );                  buffer = packet.getdata();                } catch (ioexception e) {                 // todo auto-generated catch block                 e.printstacktrace();             } } while (true);

now buffer contains packets sent sender not coming in correct order. how play sound using transmitted packets.


Comments

Post a Comment

Popular posts from this blog

commonjs - How to write a typescript definition file for a node module that exports a function? -

consider, toml node module can use: // toml.d.ts declare module toml { export function parse(value:string):any; } declare module "toml" { export = toml; } then: /// <reference path="../../../../../defs/toml/toml.d.ts"/> import toml = require('toml'); toml.parse(...); however, node module export single function, such 'glob' ( https://github.com/isaacs/node-glob ). the node usage of module be: var glob = require("glob") glob("*.js", {}, callback(err, files) { ... }); you'd naively expect this: // glob.d.ts declare function globs(paths:string, options:any, callback:{(err:any, files:string[]):void; ...but because typescripts 'import' semantics bit strange, seems can use 'import .. = require()' statement alias modules . trying call: /// <reference path="../../../../../defs/glob/glob.d.ts"/> import blog = require('glob'); results in: error ts2072: mod...
Read more

openid - Okta: Failed to get authorization code through API call -

i'm integrating okta own idp server using okta's api. i'm implementing authorization code flow following steps below: in own server, use /api/v1/authn endpoint sessiontoken. use sessiontoken obtain authorization calling endpoint: /oauth2/v1/authorize?client_id=" + clientid + "&sessiontoken=" + sessiontoken + "&response_type=code&response_mode=query&scope=openid&redirect_uri=" + redirecturl + "&state=evanyang&nonce=" it's supposed return response status code 302 , location header containing redirect url code value. however, keep getting response status code 200 , without location header, html body saying "you using unsupported browser." , "javascript disabled on browser." according api documentation: http://developer.okta.com/docs/api/resources/oidc.html#authentication-request , sessiontoken parameter sufficient this: an okta one-time sessiontoken. allows api-based ...
Read more

ios - Change Storyboard View using Seague -

i have following code checks connection server, , depending on want change views if no connection found. nsstring *connect = [nsstring stringwithcontentsofurl:[nsurl urlwithstring:@"http://myserver.com"] encoding:nsutf8stringencoding error:nil]; if (connect == null) { [self performseguewithidentifier:@"network_failure" sender:self]; } else { // other code here } my problem not change views. have added storyboard segue between 2 views identifier of network_failure . not have navigation controller or that, problem? thanks help! no not problem. first of all, in objectivec exists nil object oriented null . must use that. so: if(connect == nil) or better: if(!connect) so due fact nil not same of null , probably code does't enter in if scope . you have been able discover breakpoint. anyway: be sure set trigger segue (line) 2 view controller , , name network_failure (that not best name. should instead view1toview2 ) as, m...
Read more