java - xuggle-xuggler 5.4 NullPointerException when encoding audio -

-

today working xuggler library , tried capturing screen worked flawless. wanted add audio microphone video file captured. not easy had expected, , i'm stuck strange nullpointerexception.

this code (abbreviated):

audioformat format = new audioformat(8000.0f, 16, 1, true, false); writer.addaudiostream(1, 0, 1, (int) format.getsamplerate()); targetdataline line = gettargetdatalineforrecord(format); final int framesizeinbytes = format.getframesize(); final int bufferlengthinframes = line.getbuffersize() / 8; final int bufferlengthinbytes = bufferlengthinframes * framesizeinbytes; final byte[] buf = new byte[bufferlengthinbytes]; final long starttime = system.nanotime(); ... while (recording) {     int numbytesread = 0;     numbytesread = line.read(buf, 0, bufferlengthinbytes);     int numsamplesread = numbytesread / 2;     short[] audiosamples = new short[numsamplesread];     if (format.isbigendian()) {         (int = 0; < numsamplesread; i++) {             audiosamples[i] = (short) ((buf[2 * i] << 8) | buf[2 * + 1]);         }     } else {         (int = 0; < numsamplesread; i++) {             audiosamples[i] = (short) ((buf[2 * + 1] << 8) | buf[2 * i]);         }     }     writer.encodeaudio(1, audiosamples, system.nanotime() - starttime, timeunit.nanoseconds); // capturescreen.java:118     } writer.close();

and here nullpointerexception:

java.lang.nullpointerexception     @ com.xuggle.mediatool.mediawriter.encodeaudio(mediawriter.java:923)     @ exe.media.capturescreen.capturescreen(capturescreen.java:118)     @ exe.media.capturescreen.main(capturescreen.java:43)

the problem i'm having @ line (118):

writer.encodeaudio(1, audiosamples, system.nanotime() - starttime, timeunit.nanoseconds);

for reason when try encode audio samples, xuggle throws nullpointerexception, i'm not sure if bug or me doing stupid unable solve anyway.

for better understanding have posted code on pastebin , includes code capturing screen , code try record audio.

these jars have included:
commons-cli-1.2.jar
logback-classic-1.1.2.jar
logback-core-1.1.2.jar
xuggle-xuggler-arch-x86_x64-w64-mingw32.jar*
xuggle-xuggler-noarch-5.4.jar*

(the '*' means didn't download jar it's primary location.

thanks in advance and remember helpful answer rewarded 50 rep bounty!

i assume have line.open(format); , line.start(); somewhere?

you may need make sure have audiosamples: if (audiosamples.length > 0) writer.encodeaudio ...

also, may want add slf4j-api-1.6.4.jar , slf4j-simple-1.6.4.jar more details on errors xuggler.


Comments

Post a Comment

Popular posts from this blog

C# random value from dictionary and tuple -

-
i have following code, , need random item contains string "region_1" dictionary. public static dictionary<int, tuple<string, int, currencytype>> itemarray = new dictionary<int, tuple<string, int, currencytype>>() { { 0xb3e, new tuple<string, int, currencytype>("region_1", 1500, currencytype.fame) } }; public static int generateitemid(string shopid) { var generateditem = itemarray.elementat(new random().next(0, itemarray.count)).key; } how select this? it's not possible efficiently... first create static random @ class level... prevent non-random behaviour if run query on short period of time... (it's seeded discrete clock) static random rnd = new random(); then: var item = itemarray.values .where(t => t.item1 == shopid) .orderby(_ => rnd.next()) .firstordefault()
Read more

cgi - How do I interpret URLs without extension as files rather than missing directories in nginx? -

-
so i'm trying install zoneminder , have run under nginx, has few compiled files need run using fast-cgi. these files lack extension. if file has extension, there no issue , nginx interprets file , return 404 if can't find it. if has no extension, assume it's directory , return 404 when can't find sort of index page. here have now: # security camera domain. server { listen 888; server_name mydomain.com; root /srv/http/zm; # enable php support. include php.conf; location / { index index.html index.htm index.php; } # enable cgi support. location ~ ^/cgi-bin/(.+)$ { alias /srv/cgi-bin/zm/; fastcgi_pass unix:/run/fcgiwrap.sock; fastcgi_param script_filename $document_root/$1; include fastcgi.conf; } } the idea is, under cgi-bin directory goes through fastcgi pipe. any idea on howi can fix this? upon closer inspection, realized zoneminder has 2 cgi sc...
Read more

.htaccess - htaccess convert request to clean url and add slash at the end of the url -

-
ok , searched more 4 days , more 20 posts here in stach or in websites without kind of success first here htaccess file rewriteengine on rewriterule ^([a-za-z0-9_]+)/?$ index.php?page=$1 [nc] rewriterule ^([a-za-z0-9_]+)\/([a-za-z0-9_]+)\/?$ index.php?page=$1&action=$2 [nc] i tried many codes 1 worked me can call request , works me www.example.com/pagename => www.example.com/index.php?page=pagename here questions , please provide me information "in detail" understand code well 1- how convert request automatically www.example.com/index.php?page=pagename www.example.com/pagename 2- if tried add slash @ end shows me page without images or styling mean www.example.com/pagename => works www.example.com/pagename/ => doesn't work that's :) for first part need 301 rule this: rewritecond %{the_request} /index\.php\?page=([^\s&]+) [nc] rewriterule ^ /%1? [r=301,l] for second part use absolute path in css, js, images files r...
Read more