java - Getting 1 second sample using Xuggler -


i have issues regarding xuggler api,

i want create little class, once mp3 file opened, gets raw bytes it, but, how many? have 1 second sample original file.

this current code:

public byte[] getsamples(int ibytesqtty){     byte[] rawbytes = null;      /** go correct packet */     while (this._inputcontainer.readnextpacket(this._packet) >= 0){         system.out.println(this._packet.getduration());         /** once have packet, let's see if belongs audio stream */          if (this._packet.getstreamindex() == this._iaudiostreamid){             iaudiosamples samples = iaudiosamples.make(ibytesqtty, this._audiocoder.getchannels());               //system.out.println(">> " + samples.tostring());             /** because packet can contain multiple set of samples (frames of samples). may need call              * decode audio multiple times @ different offsets in packet's data */              int icurrentoffset = 0;              while(icurrentoffset < this._packet.getsize()){                  int ibytesdecoded = this._audiocoder.decodeaudio(samples, this._packet, icurrentoffset);                 icurrentoffset += ibytesdecoded;                  if (samples.iscomplete()){                     rawbytes = samples.getdata().getbytearray(0, samples.getsize());                 }             }             return rawbytes;         }         else{             /** otherwise drop */             do{}while(false); /** wtf? **/         }     }     return rawbytes; /** return null @ point */ }

any hint appreciated, in advance.

edit:

actually little piece of code, works me, not in cases

mp3file song = new mp3file("sample.mp3");         byte[] buff = null;         int totalbytes = 0; int inumbytes = 1024;          while( (buff = song.getsamples(inumbytes)) != null ){             totalbytes += buff.length;     //      system.out.println("length buff: " + buff.length + " total: " + totalbytes);         }  system.out.println("bytes: " + totalbytes + " (" + totalbytes/1024 + " kb.)");         float lengthsecs = (float) (totalbytes / ((1411*1000)/8));          float lengthmins = lengthsecs/60;          system.out.println("song duration: " + lengthmins + " mins. (" + lengthsecs + " secs.)");

i assume mp3 file it's internally converted regular wav file, per each second have 1411kbps rate. said, doesn't work in cases.


Comments

Post a Comment

Popular posts from this blog

Eclipse formatter for java ending braces -

i know if it's possible setup eclipse format braces using banner style. we're working code uses banner style formatting , keep consistent within team version control reasons. here's example of banner style formatting not familiar: public class foo { //------------------------ public static void main (string[] args) { boolean condition = true; try { if (condition) { system.out.println ("condition true"); } else system.out.println ("not condition"); } catch (exception ex) { // handle errors } } //------------------------ } update: name style ratliff. experiment java->code style->formatter preferences. "banner style" seems poor use of space given outline view , quick outline functionality.
Read more

ruby - Nesting modules inside of a Rails eninge gem -

what proper syntax nest child modules within parent module being isolate_namespace rails engine gem? # lib/myengine/engine.rb module myengine class engine < rails::engine isolate_namespace myengine # def ... end end for example. parent module myengine , child module blog. myengine share common domain, crud, taggable, searchable, etc, keep gem code dry , isolated main app (myapp), while inheriting isolated namespace , engine. are either of 2 approaches correct? refactor advice? # # lib/myengine/blog.rb module myengine module blog # def ... end end # b # lib/myengine/blog.rb module myengine class engine < rails::engine isolate_namespace myengine module blog # def ... end end end option a. correct, should lib/my_engine/blog.rb . can read more ruby & rails naming conventions here . further, if want put more modules or classes under blog namespace put them in folder lib/my_engine/blog , nest them under myengine::bl...
Read more

php - Why I am getting the Error "Commands out of sync; you can't run this command now" -

the documentation of error mentioned in title says if commands out of sync; can't run command now in client code, calling client functions in wrong order. this can happen, example, if using mysql_use_result() , try execute new query before have called mysql_free_result(). can happen if try execute 2 queries return data without calling mysql_use_result() or mysql_store_result() in between. from here: http://dev.mysql.com/doc/refman/5.0/en/commands-out-of-sync.html but in first query not fetching data mysql database, inserting. , in second query getting data database. here code $connection = mysqli_connect("localhost","username","password","tbl_msgs"); if(mysqli_connect_errno($connection)) { die("failed connect mysql: " . mysqli_connect_error()); } $query = "insert users (total_comments, total_views) values ({$total_comments}, {$total_views});"; $query .= "insert msgs (no...
Read more