Receiving RTP data

I want to receive RTP data and access it directly. Is there a way to somehow store the incoming data stream into a byte array or something like that?
I have been looking at the AVReceive3.java code, and it automatically sends the datasource to the player. I need to read the data in and pass it to another program. Thanks for any help!

I don't know if your diagnosis is correct, for shure I have a lot of jitter between two PC using the same java app and playing a RTP broadcast audio.
But I could not relate it with the speed of the computer, sometimes A plays before B, sometimes after. Problably it is the time to create objects that varies.
Still looking for a solution....

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How to receive RTP data by JMF

Hello!!
I have a ipaq3870 installed Jeode.
I can run JMStudio to play media on PDA and receive RTP data from PC's JMStudio.
But I can't receive RTP data by AVReceive2.
I compressed AVreceive2 into custom.jar.
Can anyone teach me how to do?
Did my steps correct?
Thank you!!
Shih-Wei Chen

Hi,
hope we could talk a little more about this because I am also trying to do some applications with the JMF and Personal Java / Jeode.
So far I haven�t worked with the JMstudio but with the AVReceive and the AVTransmit classes. My Transmit-PC is a Desktop PC running Windows XP and my Receive Handheld is Sharp Zaurus with - as I said - Personal Java / Jeode running.
Both classes run but the Transmitter only says "Transmitting ..." and the Receiver says "Waiting for data to arrive" and nothing happens.
Perhaps you know what I am doing wrong ? Can it be the Windows XP - Linux ? But the JMF ist platform independent, isn�t it ?
Do you think the JMStudio is better than the AVReceive ?
How did you manage to run jmstudio under Jeode ?
Of course he didn�t find the "java" exec because it is called evm but how can I change this ?
Thanks for your help
Poldi

Problem transmitting RTP data

Hi all, I have made a little headway with the JMF thing on the front of streaming audio data, but am currently encountering a tough problem. So I got this little application that supposedly allows two parties to converse between two RTP streaming devices (PC's and otherwise). Basically the JMF enabled app takes care of voice processing and streaming, while call control (for locating peers) is handled by a third party. I got the application to the point where the app can receive RTP voice data and render it on my speaker but I just can't seem to make any progress on the transmitting part. Below is some of the details.
- Data transmission (both send and receive) to be handled by the same RTP session (RTPManager), i.e. using the same UDP port.
- Voice capture via microphone, into Processor.
- DataSource from Processor hooked up to SendStream created by RTPManager.
Pretty straight forward? The logic and problem are described below:
- Created Processor from MediaLocator acquired from CaptureDeviceInfo
- Configure Processor
- Set up the data format of the tracks
- Realize the Processor
- Start the Processor
- Using the same RTPManager, as the receive side, add the target
- Using the RTPManager, create a new SendStream using the DataSource from the Processor
- Start the send stream
- Using a packet sniffer to see if there are UDP RTP packets being sent but see nothing, I can see incoming RTP packets from the far end (which is a different application all together), but nothing streaming out from my end.
- When inquiring the getSourceTransmissionStats JMF reported thousands of packets sent!
So the Send Stream seemed to think it sent out lots of RTP data, but the sniffer (and the far end speaker) said otherwise. No error or exception were reported.
Any suggestion? I'd give anything to get access to some diagnostic facility inside the streaming logic to see where the problem could lie.

I've faced a similar problem, what I did was to use TWO session managers, one for transmitter and the other for receiver. I then used this objects in a container.
Both peer use the same port, and know each other's address.
For receiving data from the peer I do:
RTPManager mymgr = RTPManager.newInstance();
// add as listener to create players for each incoming stream
mymgr.addReceiveStreamListener(this);
SessionAddress localaddr =new SessionAddress( InetAddress.getLocalHost(), port);
SessionAddress sessaddr = new SessionAddress( peerAddress, port);
mymgr.initialize(localaddr);
mymgr.addTarget( sessaddr);For transmitting data to the peer I do:
RTPManager mymgr = RTPManager.newInstance();
// add as listener to create players for each incoming stream
mymgr.addReceiveStreamListener(this);
SessionAddress localaddr =new SessionAddress( InetAddress.getLocalHost(), SessionAddress.ANY_PORT);
SessionAddress sessaddr = new SessionAddress( peerAddress, port);
mymgr.initialize(localaddr);
mymgr.addTarget( sessaddr);
// the processor is capturing audio from the mic
processor.start();
SendStream sendStream = mymgr.createSendStream(processor.getDataOutput(), i);
sendStream.start();I probably forgot something when doing copy paste from my code... but I think this might help you
Good luck
Marco

Why 127.0.0.1 can not receive any data,but MulticastAddress can?

Why 127.0.0.1 can not receive any data,but MulticastAddress(224.123.111.101) can? I use jmfstudio to tansport media and set the dest address to 127.0.0.1.I use anther jmfstudio,and fail to receive it.(ps:wo jmfstudio runs in the same machine at the same time).But after I change the dest addrest to 224.123.111.101,it receive data.Can any one tell me why?

The origin code is to transmit stream is(ip 127.0.0.1 ,port 22222)
localAddr = new SessionAddress(InetAddress.getLocalHost(), port);
destAddr = new SessionAddress(ipAddr, port);
As you said,the receiver reports 22222 is used.
But After I change it to
localAddr = new SessionAddress(InetAddress.getLocalHost(), port+10);
destAddr = new SessionAddress(ipAddr, port);
It says waiting for "Waiting for RTP data to arrive..."

I am receiving the data through the rs232 in labview and i have to store the data in to the word file only if there is a change in the data and we have to scan the data continuasly how can i do that.

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Can I use more than one blue-tooth device at the same time on IPhone 4S? Like a wireless headsets and speed and cadence sensor for cycling computer, receive the data and listen music simultaneously

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How to receive the datas?

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Hi together
For a schools project, which I must finish until next week, I need to read out a DS1307 RealTimeClock via I2C.
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Regards from Switzerland
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Solved!
Go to Solution.
Attachments:
i2c_problem.JPG ‏46 KB

Hi doh,
are you sure you are reading from the right register?
According to this datasheet: DS1307.pdf ,
if you want to access the seconds register it would be Adress 0 (Hex-Value-0), in your screenshot its 68 decimal. You can change the representation of your constant which is connected to the Adress terminal of your Create Configuration Reference VI. Just right click your constant -> visible object -> Radix. After that you can change the representation to x (HEX).
Additionally when you read the 7 bits which are casted to 8 bit unsigned you have to notice that the 7 bits are encoded as BCD code.
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| 0 | 1 0 0 | 0 1 1 0
Then you will see, that 70 as U8 value has : 0110 = 6 (last 4 bits) and 100 (middle 3 bits) = 4, which means, that your actual value is not 70, but 46.
So I would guess, you have to convert the U8 value to an Boolean array, split the bits according to the Table mentioned in the manual and then convert them to the proper time.
Hope this helps, if you have further questions just post.
With best Regards,
Lam

Changing outlook 2013 contact so they will not receive winmail.dat files - missing settings

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Hi,
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Receiving RTP data

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