Java Development

[gurindersm]

Hi

I intend to develop a VOIP application for Blackberry. For that its very important for me to record and play audio at the same time. I am using BlackBerry JDE 4.7 and the Blackberry 9530 simulator which comes along with the JDE.

I used Manager.createPlayer(file:///SDCard/Blackberry/Music/Sample.amr) to play audio and subsequently i did

Manager.createPlayer("capture://audio") to capture live audio. But as soon as I started the player to record audio my first player stopped playing the audio.

Is it possible to achieve the desired functionality with the API's exposed by RIM.

Can we also split the live audio into audio packets of certain duration like 10 ms or 20 ms.

I would really appreciate if anyone could provide some pointer or help to solve the above mentioned problems.

Thanks

Gurindersm

[Aviator168]

I don't know if you can have more than one instance of the player in the BB. Hopefully someone from RIM can answer this question. Maybe this is the exact reason that we have not seen any VoIP applications. Kind of a way that phone companies say that they don't want to carry VoIP calls on their networks.

[adrian_a]

However, Agito networks has a product that does just that... 

[arpit131]

Hello,

Did any one achieve this ?

Thanks
Arpit Pradhan

[naveen4nkp]

Ya it is possible ,

By creating two saperete aapliction, one is form playing and another one for recording the media, and estabilish the inter communication between them so that they work together ...

[Aviator168]

I don't think even two seperate applications is going to cut it. Have you ever open the media player and the voice recorder at the same time? Last time I tried. Activating one caused the other one to suspend.

[naveen4nkp]

i am sure it will work, i already tested it ...

[BBDeveloper]

Very interesting. Can you please tell us more, You have developed two apps for a device one application will record the voice and the other application will play the recorded audio by doing inter application communication. Is that right. Which device you tested it on?

[naveen4nkp]

 we can create one uiapplication and another backgroung aplication,and both appliction can be use togather for recording and playing the data simulteneously. we can use glabal event for initail comunication between them.

[gurindersm]

Actually i would also like to know how it worked especially the interapplication communication part.

However this is what I tried, I tried simultaneously recording and playing using JDE 4.6.0 with default 9000 simulator and it worked fine. Although it didnt work with JDE 4.7. And the format of the audio being recorded or played was AMR couldnt make it work with PCM.