Nabble - Sun - Jmf-Interest

Re: Having problem storing incoming MU-LAW to PMC WAV file

2008-10-29T05:19:45Z

If memory serves, WMP will actually fail to play any WAV/PCM data, so try playing with Quicktime and see if you have any better luck. You might be doing everything fine.

You might also try opening it with Goldwave.

Cheers,

Alex

--- On Wed, 10/29/08, juanbackson <juanbackson@...> wrote:

> From: juanbackson <juanbackson@...>
> Subject: [JMF] Having problem storing incoming MU-LAW to PMC WAV file
> To: JMF-INTEREST@...
> Date: Wednesday, October 29, 2008, 4:26 AM
> Hi,
>
> I am able to receive ULAW/rtp, 8000.0 Hz, 8-bit, Mono
> stream and play it
> using the Player class. What I need to do is to store the
> stream data into
> WAV file. I have followed the JMF tutorial to set the
> output file format.
> I can also create the WAV file no problem. But when I try
> to play the
> gnerated WAV file using Windows Media Player, it says :
> Windows Media Player
> cannot play the file. The Player might not support the fle
> type or might
> not support the codec that was used to compress the file.
>
> Does anyone know what is wrong with my code?
>
> I am attaching the code below:
>
>
>
>
> stream = ((NewReceiveStreamEvent)evt).getReceiveStream();
> DataSource ds = stream.getDataSource();
>
> // Find out the formats.
> RTPControl ctl =
> (RTPControl)ds.getControl("javax.media.rtp.RTPControl");
> if (ctl != null){
> System.err.println(" - Recevied new RTP stream:
> " + ctl.getFormat());
> } else
> System.err.println(" - Recevied new RTP
> stream");
>
> if (participant == null)
> System.err.println(" The sender of this
> stream had yet to be
> identified.");
> else {
> System.err.println(" The stream comes from:
> " +
> participant.getCNAME());
> }
>
>
> synchronized (dataSync) {
> dataReceived = true;
> dataSync.notifyAll();
> }
>
>
>
>
> ProcessorModel model = new ProcessorModel(ds,new
> Format[]{ }, new
> FileTypeDescriptor(FileTypeDescriptor.WAVE));
> Processor processor =
> Manager.createRealizedProcessor(model);
>
> boolean result = waitForState(processor,
> Processor.Configured);
> if (result == false)
> System.out.println("process is not
> configured");
> TrackControl[] tracks = processor.getTrackControls();
>
> if (tracks == null || tracks.length < 1)
> System.out.println( "Couldn't find tracks in
> processor");
>
> Format supported[];
> Format chosen = null;
> boolean atLeastOneTrack = false;
>
> for (int i = 0; i < tracks.length; i++)
> {
> Format format = tracks[i].getFormat();
> if (tracks[i].isEnabled())
> {
>
> supported = tracks[i].getSupportedFormats();
>
> // Here we choose the ULAW format ...
>
> if (supported.length > 0)
> {
> for(int k=0; k<supported.length; k++)
> {
> if(supported[k] instanceof AudioFormat)
> {
> String encoding = supported[k].getEncoding();
> System.out.println("encoding = " +
> encoding);
> if(encoding.indexOf("LINEAR") != -1)
> {
> chosen = supported[k];
> break;
> }
> }
> }
>
> tracks[i].setFormat(chosen);
> //tracks[i].setFormat(new
> AudioFormat(AudioFormat.LINEAR,8000,16,1));
> System.err.println("Track " + i + "
> is set to transmit as: " +
> tracks[i].getFormat());
> atLeastOneTrack = true;
>
> } else
> tracks[i].setEnabled(false);
> } else
> tracks[i].setEnabled(false);
> }
>
> if (!atLeastOneTrack)
> System.out.println( "Couldn't set any of the
> tracks to a valid RTP
> format");
>
> // create a player by passing datasource to the Media
> Manager
> result = waitForState(processor, Controller.Realized);
> if (result == false)
> System.out.println( "Couldn't realize
> processor");
>
>
> MediaLocator dest = new
> MediaLocator("file://c:\\tmp\\dddd.wav");
> DataSink sink =
> Manager.createDataSink(processor.getDataOutput(), dest);
> sink.open();
> sink.start();
> processor.start();
> Thread.sleep(5000);
>
> processor.stop();
> sink.stop();
> sink.close();
> System.out.println("sink close");
>
>
>
>
> Thank you very much in advance for all your help.
>
> JB
> --
> View this message in context:
> http://www.nabble.com/Having-problem-storing-incoming-MU-LAW-to-PMC-WAV-file-tp20225160p20225160.html
> Sent from the Sun - Jmf-Interest mailing list archive at
> Nabble.com.
>
> ===========================================================================
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> http://java.sun.com/products/java-media/jmf/forDevelopers/jmffaq.html
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>
> To unsubscribe, send email to listserv@... and
> include in the body
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of the message "signoff JMF-INTEREST".

Having problem storing incoming MU-LAW to PMC WAV file

2008-10-29T04:26:36Z

Hi,

I am able to receive ULAW/rtp, 8000.0 Hz, 8-bit, Mono stream and play it using the Player class. What I need to do is to store the stream data into WAV file. I have followed the JMF tutorial to set the output file format. I can also create the WAV file no problem. But when I try to play the gnerated WAV file using Windows Media Player, it says : Windows Media Player cannot play the file. The Player might not support the fle type or might not support the codec that was used to compress the file.

Does anyone know what is wrong with my code?

I am attaching the code below:

stream = ((NewReceiveStreamEvent)evt).getReceiveStream();
DataSource ds = stream.getDataSource();

// Find out the formats.
RTPControl ctl = (RTPControl)ds.getControl("javax.media.rtp.RTPControl");
if (ctl != null){
System.err.println(" - Recevied new RTP stream: " + ctl.getFormat());
} else
System.err.println(" - Recevied new RTP stream");

if (participant == null)
System.err.println(" The sender of this stream had yet to be identified.");
else {
System.err.println(" The stream comes from: " + participant.getCNAME());
}

synchronized (dataSync) {
dataReceived = true;
dataSync.notifyAll();
}

ProcessorModel model = new ProcessorModel(ds,new Format[]{ }, new FileTypeDescriptor(FileTypeDescriptor.WAVE));
Processor processor = Manager.createRealizedProcessor(model);

boolean result = waitForState(processor, Processor.Configured);
if (result == false)
System.out.println("process is not configured");
TrackControl[] tracks = processor.getTrackControls();

if (tracks == null || tracks.length < 1)
System.out.println( "Couldn't find tracks in processor");

Format supported[];
Format chosen = null;
boolean atLeastOneTrack = false;

for (int i = 0; i < tracks.length; i++)
{
Format format = tracks[i].getFormat();
if (tracks[i].isEnabled())
{

supported = tracks[i].getSupportedFormats();

// Here we choose the ULAW format ...

if (supported.length > 0)
{
for(int k=0; k<supported.length; k++)
{
if(supported[k] instanceof AudioFormat)
{
String encoding = supported[k].getEncoding();
System.out.println("encoding = " + encoding);
if(encoding.indexOf("LINEAR") != -1)
{
chosen = supported[k];
break;
}
}
}

tracks[i].setFormat(chosen);
//tracks[i].setFormat(new AudioFormat(AudioFormat.LINEAR,8000,16,1));
System.err.println("Track " + i + " is set to transmit as: " + tracks[i].getFormat());
atLeastOneTrack = true;

} else
tracks[i].setEnabled(false);
} else
tracks[i].setEnabled(false);
}

if (!atLeastOneTrack)
System.out.println( "Couldn't set any of the tracks to a valid RTP format");

// create a player by passing datasource to the Media Manager
result = waitForState(processor, Controller.Realized);
if (result == false)
System.out.println( "Couldn't realize processor");

MediaLocator dest = new MediaLocator("file://c:\\tmp\\dddd.wav");
DataSink sink = Manager.createDataSink(processor.getDataOutput(), dest);
sink.open();
sink.start();
processor.start();
Thread.sleep(5000);

processor.stop();
sink.stop();
sink.close();
System.out.println("sink close");

Thank you very much in advance for all your help.

JB

Re: method grabFrame() returning null - code inline

2008-09-20T21:54:46Z

How about with the web camera using your original code

Francis

On Sep 20, 2008, at 12:30 PM, Vinod Naik <nahvns-f@...> wrote:

Tried ur suggestions, doing a p.prefetch() hangs and never returns.
it seems i am doomed
:(

----- Original Message ----
From: Francis Chan <francisleechan@...>
To: JMF-INTEREST@...
Sent: Saturday, 20 September, 2008 3:01:36 AM
Subject: Re: [JMF] method grabFrame() returning null - code inline

I think i find out what's the problem is change this line of code from
p = Manager.createPlayer(url);
to
p =Manager.createRealizedPlayer(url);

and get rid off the p.realise(); of course make sure you call p.prefetch() after that p = Manager.createRealizedPlayer(url);

On Sat, Sep 20, 2008 at 12:42 AM, Francis Chan <francisleechan@...> wrote:

On Fri, Sep 19, 2008 at 3:55 PM, Vinod Naik <nahvns-f@...> wrote:

Thanks for your suggestion, it is a video file present in my hard disk
I tried to do it using URL, unfortunately that too is not working. The grabFrame is still returning null

Can this be a local environment issue ? This may be like asking for too much - but can you test this code out in your machine, that way we can figure out if need to some tinkiring with my environment.

Sorry. I don't use JMF. I use FMJ: http://fmj-sf.net/

It is jmf API compatiable, and it works with newer capture devices. One thing we can do before we started tinkering with the environment though. Do you have a webcamera? try to extract the frame from webcamera? If the framegrabbing works for the webcamera, and it does not work for your file on the harddisk, then you can conclude that the codec does NOT support framegrabbing feature. framegrabbing should work with most of the webcamera that has vfw driver,and most USB webcameras ship with vfw, and I have done a framegrabbing with webcamera with JMF in the past, and i had success with it.

Also, what other ways exist to extract frames from a video using JMF ? I already know the codec way in which you insert a codec in the stream, but that will not be useful for me because I want to compare arbitrary frames with each other.

Thanks a lot.

Code ::

/**************************************************************************************

import java.awt.*;

import javax.media.*;
import javax.media.control.FrameGrabbingControl;
import javax.media.control.FramePositioningControl;
import javax.media.Format;
import javax.media.format.*;

import java.io.*;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URL;

import javax.imageio.*;
import java.awt.image.*;

import java.util.*;
import javax.media.protocol.DataSource;
import javax.media.util.*;

public class FrameAccess implements ControllerListener {

Player p;
Object waitSync = new Object();
boolean stateTransitionOK = true;
public boolean alreadyPrnt = false;

int totalFrames = FramePositioningControl.FRAME_UNKNOWN;
FramePositioningControl fpc;
FrameGrabbingControl fgc;

BufferToImage frameConverter;

int JUMPING_INTERVAL = 5;
int SAMPLE_INTERVAL = 5;

public boolean open(DataSource ml) {

// Create a file object
File file = new File("lotr3-2.divx");

// Convert the file object to a URL
URL url = null;
try {

// The file need not exist. It is made into an absolute path
// by prefixing the current working directory

URI uri = file.toURI();

url = uri.toURL(); // file:/d:/almanac1.4/java.io/filename
} catch (MalformedURLException e) {
System.out.println("BAD URL . . .");

return false;
}
/*
MediaLocator ml1 = new MediaLocator(url);

DataSource ds1 = null;
try {
ds1 = Manager.createDataSource(ml1);

} catch (NoDataSourceException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();

} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();

}

//System.err.println("create player for: " + ml.getContentType());

*/

try {
p = Manager.createPlayer(url);
} catch (NoPlayerException e) {

// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {

// TODO Auto-generated catch block
e.printStackTrace();
}

System.out.println("before realize . . .");

p.addControllerListener(this);

p.realize();
if (!waitForState(p.Realized)) {
System.out.println("Failed to realize the JMF player.");

return false;
}
System.out.println("after realize . . .");

// Try to retrieve a FramePositioningControl from the player.
fpc = (FramePositioningControl) p.getControl("javax.media.control.FramePositioningControl");

if (fpc == null) {
System.err.println("The player does not support FramePositioningControl.");

return false;
}

//calculate total number of frames in movie

Time duration = p.getDuration();
   double durationSeconds = duration.getSeconds();
   System.out.println("durationSeconds = " + durationSeconds);

if (duration != Duration.DURATION_UNKNOWN) {
totalFrames = fpc.mapTimeToFrame(duration)+1;
if (totalFrames==FramePositioningControl.FRAME_UNKNOWN)

System.out.println("The FramePositioningControl does not support mapTimeToFrame.");
else
System.out.println("Total frames: "+ totalFrames);

} else {
System.out.println("Movie duration: unknown");
}

p.prefetch();
if (!waitForState(p.Prefetched)) {
System.out.println("Failed to prefetch the player.");

return false;
}

System.out.println("getting fgc ");
fgc = (FrameGrabbingControl)p.getControl("javax.media.control.FrameGrabbingControl");

if (fgc == null) {
System.out.println("The player does not support FrameGrabbingControl.");

return false;
}

// Prefetch the player.

p.prefetch();
if (!waitForState(p.Prefetched)) {
System.out.println("Failed to prefetch the player.");

return false;
}

p.start();

Buffer frame = fgc.grabFrame();

System.out.println("check 1 . .");
if(frame == null)
{
System.out.println("frame in null");
return false;

}
System.out.println("check 2 . .");
int currentFrame = fpc.mapTimeToFrame(p.getMediaTime());

int count = 0;
boolean repeat = true;

System.out.println("check 3. .");
do {
count ++;
int framesSkipped = fpc.skip(1);

   System.out.println("framesSkipped = " + framesSkipped);
   int newFrame = fpc.mapTimeToFrame(p.getMediaTime());
   System.out.println("new, current frames = " + newFrame + " " + currentFrame);

if ( newFrame > currentFrame ) {
   currentFrame = newFrame;
   repeat = true;

   // frame = fgc.grabFrame();
}
   else {
   repeat = false;

   }

} while (repeat);

System.out.println("Number of frames :"+count);

return true;
}

/** parse the size of the video from the string videoformat */

public Dimension parseVideoSize(String videoSize) {
int x = 300, y = 200;
StringTokenizer strtok = new StringTokenizer(videoSize, ", ");

strtok.nextToken();
String size = strtok.nextToken();
StringTokenizer sizeStrtok = new StringTokenizer(size, "x");

try {
x = Integer.parseInt(sizeStrtok.nextToken());
y = Integer.parseInt(sizeStrtok.nextToken());
} catch (NumberFormatException e) {

System.out
.println("unable to find video size, assuming default of 300x200");
}

System.out.println("Image width = " + String.valueOf(x)
+ "\nImage height = " + String.valueOf(y));

return new Dimension(x, y);
}

/**
* Block until the processor has transitioned to the given state. Return

* false if the transition failed.
*/
boolean waitForState(int state) {

synchronized (waitSync) {
try {
while (p.getState() != state && stateTransitionOK)

waitSync.wait();
} catch (Exception e) {
}
}
return stateTransitionOK;

}

/**
* Controller Listener.
*/

public void controllerUpdate(ControllerEvent evt) {

if (evt instanceof ConfigureCompleteEvent
|| evt instanceof RealizeCompleteEvent
|| evt instanceof PrefetchCompleteEvent) {
synchronized (waitSync) {
stateTransitionOK = true;
waitSync.notifyAll();

}
} else if (evt instanceof ResourceUnavailableEvent) {
synchronized (waitSync) {

stateTransitionOK = false;
waitSync.notifyAll();
}
} else if (evt instanceof EndOfMediaEvent) {

p.close();
System.exit(0);
}
}

/**
* Main program
*/

public static void main(String[] args) {

if (args.length == 0) {

prUsage();
System.exit(0);
}

System.out.println("1. . .");

String url = args[0];

if (url.indexOf(":") < 0) {
prUsage();

System.exit(0);
}

MediaLocator ml;

if ((ml = new MediaLocator(url)) == null) {
System.err.println("Cannot build media locator from: " + url);
System.exit(0);

}
DataSource ds = null;

// Create a DataSource given the media locator.

try {
ds = Manager.createDataSource(ml);
} catch (Exception e) {
System.err.println("Cannot create DataSource from: " + ml);
System.exit(0);
}

FrameAccess fa = new FrameAccess();

if (!fa.open(ds))
System.exit(0);

}

static void prUsage() {
System.err.println("Usage: java FrameAccess <url>");

}

}

/****************************************************************************************************************************************************/




----- Original Message ----
From: Francis Chan <francisleechan@...>
To: JMF-INTEREST@...

Sent: Friday, 19 September, 2008 2:48:55 PM
Subject: Re: [JMF] method grabFrame() returning null - code inline

is that a video file that you are trying to video stream or from capture device? I have never use a DataSource to grab a frame, but i ususally use url of the file or captureDevice.getLocator() and it works. Try it with url if it is a file ; if it is a capturedevice like webcamera or other capture device use getLocator().

francis

On Fri, Sep 19, 2008 at 12:28 PM, Vinod Naik <nahvns-f@...> wrote:

Yes it can. I can play divx, mov and mpg files

-Vinod

----- Original Message ----
From: Francis Chan <francisleechan@...>
To: JMF-INTEREST@...
Sent: Friday, 19 September, 2008 1:53:47 PM
Subject: Re: [JMF] method grabFrame() returning null - code inline

Can your video play in jmfstudio?

Francis

On Sep 19, 2008, at 9:27 AM, Vinod Naik <nahvns-f@...> wrote:

Hello Francis,

I tried doing p.start() , but still grabFrame() is returning null.

Any idea as to wnhy this is happening

Thanks again
Vinod

----- Original Message ----
From: Francis Chan <francisleechan@...>
To: JMF-INTEREST@...JMF-INTEREST@...
Sent: Friday, 19 September, 2008 3:50:07 AM
Subject: Re: [JMF] method grabFrame() returning null - code inline

just a quick scan of your file... try this

put
f.start(); before the FrameGrabbing control.

Francis

On Fri, Sep 19, 2008 at 1:10 AM, Vinod Naik <nahvns-f@...nahvns-f@...> wrote:

Hello Everybody,

I have been trying to write a basic java program to grab frames from any
video. I am using FOBS4JMF along with JMF.
The problem is that I cannot seem to get the grabFrame() method of
FrameGrabbingControl interface to work.

fgc =
(FrameGrabbingControl)p.getControl("javax.media.control.FrameGrabbingControl
") ;

if (fgc == null) {
System.out.println("The player does not support FrameGrabbingControl.");
return false;
}
.
.
.

Buffer objframe = fgc.grabFrame(); (line number 95 in the file attached )

here - objframe is always null :( though i manage to get an fgc object. I have
tried and tried to understand why this is happening and where I am going
wrong.

Code is Inline

I need some help here . . . please

Thanks a lot
Vinod

----------------------FrameAccess.java-----------------------------------

import java.awt.*;
import javax.media.*;

import javax.media.control.FrameGrabbingControl;
import javax.media.control.FramePositioningControl;
import javax.media.Format;
import javax.media.format.*;
import java.io.*;

import javax.imageio.*;
import java.awt.image.*;
import java.util.*;
import javax.media.protocol.DataSource;
import javax.media.util.*;

public class FrameAccess implements ControllerListener {

Player p;
Object waitSync = new Object();
boolean stateTransitionOK = true;
public boolean alreadyPrnt = false;
int totalFrames = FramePositioningControl.FRAME_UNKNOWN;
FramePositioningControl fpc;
FrameGrabbingControl fgc;

BufferToImage frameConverter;

int JUMPING_INTERVAL = 5;
int SAMPLE_INTERVAL = 5;

public boolean open(DataSource ml) {

System.err.println("create player for: " + ml.getContentType());

try {
p = Manager.createPlayer(ml);
} catch (NoPlayerException e) {

// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {

// TODO Auto-generated catch block
e.printStackTrace();
}

System.out.println("before realize . . .");

p.addControllerListener(this);

p.realize();

if (!waitForState(p.Realized)) {
System.out.println("Failed to realize the JMF player.");
return false;
}
System.out.println("after realize . . .");

// Try to retrieve a FramePositioningControl from the player.
fpc = (FramePositioningControl) p.getControl("javax.media.control.FramePositioningControl");

if (fpc == null) {
System.err.println("The player does not support FramePositioningControl.");
return false;
}

//calculate total number of frames in movie
Time duration = p.getDuration();

   double durationSeconds = duration.getSeconds();
   System.out.println("durationSeconds = " + durationSeconds);
if (duration != Duration.DURATION_UNKNOWN) {

totalFrames = fpc.mapTimeToFrame(duration)+1;
if (totalFrames==FramePositioningControl.FRAME_UNKNOWN)
System.out.println("The FramePositioningControl does not support mapTimeToFrame.");

else
System.out.println("Total frames: "+ totalFrames);
} else {

System.out.println("Movie duration: unknown");
}

p.prefetch();
if (!waitForState(p.Prefetched)) {
System.out.println("Failed to prefetch the player.");

return false;
}

System.out.println("getting fgc ");
fgc = (FrameGrabbingControl)p.getControl("javax.media.control.FrameGrabbingControl");

if (fgc == null) {
System.out.println("The player does not support FrameGrabbingControl.");

return false;
}

Buffer frame = fgc.grabFrame();

System.out.println("check 1 . .");
if(frame == null)
{
System.out.println("frame in null");
return false;
}
System.out.println("check 2 . .");

int currentFrame = fpc.mapTimeToFrame(p.getMediaTime());
int count = 0;
boolean repeat = true;

System.out.println("check 3. .");
do {
count ++;
int framesSkipped = fpc.skip(1);

   System.out.println("framesSkipped = " + framesSkipped);
   int newFrame = fpc.mapTimeToFrame(p.getMediaTime());
   System.out.println("new, current frames = " + newFrame + " " + currentFrame);

if ( newFrame > currentFrame ) {
   currentFrame = newFrame;

   repeat = true;
   frame = fgc.grabFrame();
}

   else {
   repeat = false;
   }

} while (repeat);

System.out.println("Number of frames :"+count);

return true;

}

/** parse the size of the video from the string videoformat */
public Dimension parseVideoSize(String videoSize) {

int x = 300, y = 200;
StringTokenizer strtok = new StringTokenizer(videoSize, ", ");
strtok.nextToken();
String size = strtok.nextToken();

StringTokenizer sizeStrtok = new StringTokenizer(size, "x");
try {
x = Integer.parseInt(sizeStrtok.nextToken());

y = Integer.parseInt(sizeStrtok.nextToken());
} catch (NumberFormatException e) {
System.out
.println("unable to find video size, assuming default of 300x200");
}

System.out.println("Image width = " + String.valueOf(x)
+ "\nImage height = " + String.valueOf(y));

return new Dimension(x, y);
}

/**
* Block until the processor has transitioned to the given state. Return
* false if the transition failed.
*/

boolean waitForState(int state) {
synchronized (waitSync) {
try {
while (p.getState() != state && stateTransitionOK)
waitSync.wait();
} catch (Exception e) {

}
}
return stateTransitionOK;
}

/**
* Controller Listener.
*/
public void controllerUpdate(ControllerEvent evt) {

if (evt instanceof ConfigureCompleteEvent
|| evt instanceof RealizeCompleteEvent
|| evt instanceof PrefetchCompleteEvent) {

synchronized (waitSync) {
stateTransitionOK = true;
waitSync.notifyAll();

}
} else if (evt instanceof ResourceUnavailableEvent) {
synchronized (waitSync) {

stateTransitionOK = false;
waitSync.notifyAll();
}
} else if (evt instanceof EndOfMediaEvent) {

p.close();
System.exit(0);
}
}

/**
* Main program
*/

public static void main(String[] args) {

if (args.length == 0) {
prUsage();
System.exit(0);
}

System.out.println("1. . .");

String url = args[0];

if (url.indexOf(":") < 0) {

prUsage();
System.exit(0);
}

MediaLocator ml;

if ((ml = new MediaLocator(url)) == null) {
System.err.println("Cannot build media locator from: " + url);

System.exit(0);
}
DataSource ds = null;

// Create a DataSource given the media locator.

try {
ds = Manager.createDataSource(ml);
} catch (Exception e) {
System.err.println("Cannot create DataSource from: " + ml);
System.exit(0);
}

FrameAccess fa = new FrameAccess();

if (!fa.open(ds))
System.exit(0);

}

static void prUsage() {
System.err.println("Usage: java FrameAccess <url>");

}

}
--------------------------------------------------------------------------------------------------------------------

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