Android - video view with progressive streaming -
streamingmediaplayer .java mediaplayer not yet support streaming external urls class provides pseudo-streaming function downloading content incrementally & playing enough audio in our temporary storage.
but code reporting error...and not playing video showing stream progress
public class streamingmediaplayer { private static final int intial_kb_buffer = 96*10/8;//assume 96kbps*10secs/8bits per byte private textview textstreamed; private imagebutton playbutton; private progressbar progressbar; // track display progressbar private long medialengthinkb, medialengthinseconds; private int totalkbread = 0; // create handler call view updates on main ui thread. private final handler handler = new handler(); private mediaplayer mediaplayer;//mediaplayer private file downloadingmediafile; //old location private boolean isinterrupted; private context context; private int counter = 0; public streamingmediaplayer(context context,textview textstreamed, imagebutton playbutton, button streambutton,progressbar progressbar) { this.context = context; this.textstreamed = textstreamed; this.playbutton = playbutton; this.progressbar = progressbar; } /** * progressively download media temporary location , update mediaplayer new content becomes available. */ public void startstreaming(final string mediaurl, long medialengthinkb, long medialengthinseconds) throws ioexception { this.medialengthinkb = medialengthinkb; this.medialengthinseconds = medialengthinseconds; runnable r = new runnable() { public void run() { try { downloadaudioincrement(mediaurl); } catch (ioexception e) { log.e(getclass().getname(), "unable initialize mediaplayer fileurl=" + mediaurl, e); return; } } }; new thread(r).start(); } /** * download url stream temporary location , call setdatasource * local file */ public void downloadaudioincrement(string mediaurl) throws ioexception { urlconnection cn = new url(mediaurl).openconnection(); cn.connect(); inputstream stream = cn.getinputstream(); if (stream == null) { log.e(getclass().getname(), "unable create inputstream mediaurl:" + mediaurl); } downloadingmediafile = new file(context.getcachedir(),"downloadingmedia_" + (counter++) + ".dat"); fileoutputstream out = new fileoutputstream(downloadingmediafile); byte buf[] = new byte[16384]; int totalbytesread = 0, incrementalbytesread = 0; { int numread = stream.read(buf); if (numread <= 0) break; out.write(buf, 0, numread); totalbytesread += numread; incrementalbytesread += numread; totalkbread = totalbytesread/1000; testmediabuffer(); firedataloadupdate(); } while (validatenotinterrupted()); stream.close(); if (validatenotinterrupted()) { firedatafullyloaded(); } } private boolean validatenotinterrupted() { if (isinterrupted) { if (mediaplayer != null) { mediaplayer.pause(); //mediaplayer.release(); } return false; } else { return true; } } /** * test whether need transfer buffered data mediaplayer. * interacting mediaplayer on non-main ui thread can causes crashes perform using handler. */ private void testmediabuffer() { runnable updater = new runnable() { public void run() { if (mediaplayer == null) { // create mediaplayer once have minimum buffered data if ( totalkbread >= intial_kb_buffer) { try { startmediaplayer(); } catch (exception e) { log.e(getclass().getname(), "error copying buffered conent.", e); } } } else if ( mediaplayer.getduration() - mediaplayer.getcurrentposition() <= 1000 ){ // note: media player has stopped @ end transfer existing buffered data // test < 1second of data because media player can stop when there still // few milliseconds of data left play transferbuffertomediaplayer(); } } }; handler.post(updater); } private void startmediaplayer() { try { file bufferedfile = new file(context.getcachedir(),"playingmedia" + (counter++) + ".dat"); movefile(downloadingmediafile,bufferedfile); log.e("player",bufferedfile.length()+""); log.e("player",bufferedfile.getabsolutepath()); mediaplayer = new mediaplayer(); mediaplayer.setdatasource(bufferedfile.getabsolutepath()); mediaplayer.setaudiostreamtype(audiomanager.stream_music); mediaplayer.prepareasync(); firedatapreloadcomplete(); } catch (ioexception e) { log.e(getclass().getname(), "error initializing mediaplaer.", e); return; } } /** * transfer buffered data mediaplayer. * interacting mediaplayer on non-main ui thread can causes crashes perform using handler. */ private void transferbuffertomediaplayer() { try { // first determine if need restart player after transferring data...e.g. perhaps user pressed pause boolean wasplaying = mediaplayer.isplaying(); int curposition = mediaplayer.getcurrentposition(); mediaplayer.pause(); file bufferedfile = new file(context.getcachedir(),"playingmedia" + (counter++) + ".dat"); //fileutils.copyfile(downloadingmediafile,bufferedfile); mediaplayer = new mediaplayer(); mediaplayer.setdatasource(bufferedfile.getabsolutepath()); //mediaplayer.setaudiostreamtype(audiosystem.stream_music); mediaplayer.prepareasync(); mediaplayer.seekto(curposition); // restart if @ end of prior beuffered content or mediaplayer playing. // note: test < 1second of data because media player can stop when there still // few milliseconds of data left play boolean atendoffile = mediaplayer.getduration() - mediaplayer.getcurrentposition() <= 1000; if (wasplaying || atendoffile){ mediaplayer.start(); } }catch (exception e) { log.e(getclass().getname(), "error updating newly loaded content.", e); } } private void firedataloadupdate() { runnable updater = new runnable() { public void run() { textstreamed.settext((charsequence) (totalkbread + " kb read")); float loadprogress = ((float)totalkbread/(float)medialengthinkb); progressbar.setsecondaryprogress((int)(loadprogress*100)); } }; handler.post(updater); } /** * have preloaded enough content , started mediaplayer update buttons & progress meters. */ private void firedatapreloadcomplete() { runnable updater = new runnable() { public void run() { mediaplayer.start(); startplayprogressupdater(); playbutton.setenabled(true); //streambutton.setenabled(false); } }; handler.post(updater); } private void firedatafullyloaded() { runnable updater = new runnable() { public void run() { transferbuffertomediaplayer(); textstreamed.settext((charsequence) ("audio full loaded: " + totalkbread + " kb read")); } }; handler.post(updater); } public mediaplayer getmediaplayer() { return mediaplayer; } public void startplayprogressupdater() { float progress = (((float)mediaplayer.getcurrentposition()/1000)/(float)medialengthinseconds); progressbar.setprogress((int)(progress*100)); if (mediaplayer.isplaying()) { runnable notification = new runnable() { public void run() { startplayprogressupdater(); } }; handler.postdelayed(notification,1000); } } public void interrupt() { playbutton.setenabled(false); isinterrupted = true; validatenotinterrupted(); } public void movefile(file oldlocation, file newlocation) throws ioexception { if ( oldlocation.exists( )) { bufferedinputstream reader = new bufferedinputstream( new fileinputstream(oldlocation) ); bufferedoutputstream writer = new bufferedoutputstream( new fileoutputstream(newlocation, false)); try { byte[] buff = new byte[8192]; int numchars; while ( (numchars = reader.read( buff, 0, buff.length ) ) != -1) { writer.write( buff, 0, numchars ); } } catch( ioexception ex ) { throw new ioexception("ioexception when transferring " + oldlocation.getpath() + " " + newlocation.getpath()); } { try { if ( reader != null ){ writer.close(); reader.close(); } } catch( ioexception ex ){ log.e(getclass().getname(),"error closing files when transferring " + oldlocation.getpath() + " " + newlocation.getpath() ); } } } else { throw new ioexception("old location not exist when transferring " + oldlocation.getpath() + " " + newlocation.getpath() ); } } } //java file /*main activity*/ /* tutorial 3*/ package com.example.tutorial; import java.io.ioexception; import android.app.activity; import android.os.bundle; import android.util.log; import android.view.view; import android.widget.button; import android.widget.imagebutton; import android.widget.mediacontroller; import android.widget.progressbar; import android.widget.textview; import android.widget.videoview; public class tutorial3 extends activity { //videoview videoview; private button streambutton; private imagebutton playbutton; private textview textstreamed; private boolean isplaying; private streamingmediaplayer audiostreamer; public void oncreate(bundle icicle) { super.oncreate(icicle); setcontentview(r.layout.tutorial3); initcontrols(); } private void initcontrols() { textstreamed = (textview) findviewbyid(r.id.text_kb_streamed); streambutton = (button) findviewbyid(r.id.button_stream); //videoview = (videoview) findviewbyid(r.id.videoview); streambutton.setonclicklistener(new view.onclicklistener() { public void onclick(view view) { startstreamingaudio(); }}); playbutton = (imagebutton) findviewbyid(r.id.button_play); playbutton.setenabled(false); playbutton.setonclicklistener(new view.onclicklistener() { public void onclick(view view) { if (audiostreamer.getmediaplayer().isplaying()) { audiostreamer.getmediaplayer().pause(); playbutton.setimageresource(r.drawable.button_play); } else { audiostreamer.getmediaplayer().start(); audiostreamer.startplayprogressupdater(); playbutton.setimageresource(r.drawable.button_pause); } isplaying = !isplaying; }}); } private void startstreamingaudio() { try { final progressbar progressbar = (progressbar) findviewbyid(r.id.progress_bar); if ( audiostreamer != null) { audiostreamer.interrupt(); } audiostreamer = new streamingmediaplayer(this,textstreamed, playbutton, streambutton,progressbar); audiostreamer.startstreaming("http://www.boisestatefootball.com/sites/default/files/videos/original/01%20-%20coach%20pete%20bio_4.mp4",1677, 214); //streambutton.setenabled(false); } catch (ioexception e) { log.e(getclass().getname(), "error starting stream audio.", e); } } } //xml file <?xml version="1.0" encoding="utf-8"?> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" android:padding="10px" > <textview android:id="@+id/text_kb_streamed" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="streaming .mp3 audio tutorial" android:textstyle="bold" /> <button android:id="@+id/button_stream" style="?android:attr/buttonstylesmall" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_margintop="10px" android:text="start streaming" /> <progressbar android:id="@+id/progress_bar" style="?android:attr/progressbarstylehorizontal" android:layout_width="200px" android:layout_height="wrap_content" /> <imagebutton android:id="@+id/button_play" style="?android:attr/buttonstylesmall" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_margintop="5px" android:src="@drawable/button_pause" /> </linearlayout> the above code reporting unknown errors error(-38,0)
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