java - Stream android screen -


i trying fallow truiton screencapture example, in order record device screen using mediaprojection

when saving recording localy works

    mmediarecorder.setvideosource(mediarecorder.videosource.surface);     mmediarecorder.setoutputformat(mediarecorder.outputformat.mpeg_4);      string localfilepath = getlocalfilepath();     mmediarecorder.setoutputfile(localfilepath);      mmediarecorder.setvideosize(display_width, display_height);     mmediarecorder.setvideoencoder(mediarecorder.videoencoder.mpeg_4_sp);     mmediarecorder.setvideoframerate(30);     mmediarecorder.prepare();

how ever when changing work filedescriptor it's not

    mmediarecorder.setvideosource(mediarecorder.videosource.surface);     mmediarecorder.setoutputformat(mediarecorder.outputformat.mpeg_4);      string hostname = "10.26.100.18";     int port = 2007;     socket socket = new socket(inetaddress.getbyname(hostname), port);     parcelfiledescriptor filedescriptor = parcelfiledescriptor.fromsocket(socket);     localserversocket localserversocket = new localserversocket(filedescriptor.getfiledescriptor());      mmediarecorder.setoutputfile(localserversocket.getfiledescriptor());      mmediarecorder.setvideosize(display_width, display_height);     mmediarecorder.setvideoencoder(mediarecorder.videoencoder.mpeg_4_sp);     mmediarecorder.setvideoframerate(30);     mmediarecorder.prepare();

if not using localserversocket, mmediarecorder.prepare() throw exception, using it, exception in below method in mmediarecorder.getsurface()

private virtualdisplay createvirtualdisplay() {     return mmediaprojection.createvirtualdisplay("mainactivity",             display_width, display_height, mscreendensity,             displaymanager.virtual_display_flag_auto_mirror,             mmediarecorder.getsurface(), null /*callbacks*/, null             /*handler*/); }

the exception

caused by: java.lang.illegalstateexception: failed surface    @ android.media.mediarecorder.getsurface(native method)    @ com.truiton.screencapture.mainactivity$override.createvirtualdisplay(mainactivity.java:172)    @ com.truiton.screencapture.mainactivity$override.onactivityresult(mainactivity.java:133)    @ com.truiton.screencapture.mainactivity$override.access$dispatch(mainactivity.java)    @ com.truiton.screencapture.mainactivity.onactivityresult(mainactivity.java:0)    @ android.app.activity.dispatchactivityresult(activity.java:6456)    @ android.app.activitythread.deliverresults(activitythread.java:3695)    @ android.app.activitythread.handlesendresult(activitythread.java:3742)     @ android.app.activitythread.-wrap16(activitythread.java)     @ android.app.activitythread$h.handlemessage(activitythread.java:1393)     @ android.os.handler.dispatchmessage(handler.java:102)     @ android.os.looper.loop(looper.java:148)     @ android.app.activitythread.main(activitythread.java:5417)     @ java.lang.reflect.method.invoke(native method)     @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:726)     @ com.android.internal.os.zygoteinit.main(zygoteinit.java:616) 

this java server, socket after mmediarecorder.prepare() called , stuck on inputstream.read eccpected. exception in android happands when call mmediarecorder.start()

    final byte[] buffer = new byte[1024];     try {         serversocket serversocket = new serversocket(2007);         while (!serversocket.isclosed()) {             socket socket = serversocket.accept();             file videofile = createemptyvideofile();             fileoutputstream outputstream = new fileoutputstream(videofile);             inputstream inputstream = socket.getinputstream();             int length = inputstream.read(buffer);             while (length != -1) {                 outputstream.write(buffer, 0, length);                 length = inputstream.read(buffer);             }         }     } catch (ioexception e) {         e.printstacktrace();     }

you have use localserversocket, below partially worked me, have mediastreamer class extends mediarecorder.

public class mediastreamer extends mediarecorder {      private localserversocket localserversocket = null;     private localsocket receiver, sender = null;      public void prepare() throws illegalstateexception,ioexception {          receiver = new localsocket();         try {             localserversocket = new localserversocket("<your_socket_addr>");             receiver.connect(new localsocketaddress("<your_socket_addr>"));             receiver.setreceivebuffersize(4096);             receiver.setsendbuffersize(4096);             sender = localserversocket.accept();             sender.setreceivebuffersize(4096);             sender.setsendbuffersize(4096);          } catch (ioexception e1) {             throw new ioexception("can't create local socket !");         }          setoutputfile(sender.getfiledescriptor());          try {             super.prepare();         } catch (exception e) {             closesockets();             throw e;         }                }      public inputstream getinputstream() {          inputstream out = null;          try {             out = receiver.getinputstream();         } catch (ioexception e) {         }          return out;      }       public void stop() {         closesockets();         super.stop();     }      private void closesockets() {         if (localserversocket !=null) {             try {                 localserversocket.close();                 sender.close();                 receiver.close();             }             catch (ioexception e) {              }             localserversocket = null;              sender = null;              receiver = null;         }     } }

for recording

video = new mediastreamer(); video.reset();  video.setvideosource(mediarecorder.videosource.default); video.setpreviewdisplay(holder.getsurface()); video.setoutputformat(mediarecorder.outputformat.mpeg_4); video.setvideoframerate(videoconstants.framerate); video.setvideoencodingbitrate(videoconstants.bitrate*1000); video.setvideosize(videoconstants.resolationx, videoconstants.resolationy); video.setvideoencoder(mediarecorder.videoencoder.mpeg_4_sp);  try {    video.prepare(); } catch (ioexception e) {    e.printstacktrace(); } video.start();

but main problem mp4 not easy stream . basic problem mp4 not live, streamable format, though data captured via socket, crucial file headers written @ conclusion of audio or video capture, missing (because sockets not seekeable local files) - hence unplayable data (and so, why works fine when saved local files, understandable).

there no easy way perform post-processing on data manually add file headers. solution either don't use mp4 recording format, or, write packetiser similar used in spydroid project

hope helps !


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