Java Development

[pavlikus]

Hi all,

It's on 4.2 platform... I use javax.microedition.media.Player thing for displaying video content in my application. It worked pretty well until I need to implement video pausing and seeking. When I use player.stop() method then the video playback gets dissapeared and I see the screen that was under it. Though it becomes visible back when I resume the playback using player.resume()

Almost the same thing happens when I seek the playback back and forward - the playback dissapears for a moment, gets seeked and then appears back at the new play position.

Is there chance to make the seeking smooth and pause do not hide the video?

Thank you!

Pavlo 

[MSohm]

Have you created a MIDlet or BlackBerry CLDC application?  Can you provide some sample code of your implementation?  What is the full 4 digit BlackBerry handheld software version you are testing on?  You can find this under Options, About on the BlackBerry.

[rab]

I am getting the same behavior. Basically when the player is not playing, it does not refresh the screen.

This is how it was always behaving on all devices ( version 4.2.x).

Is this a bug?

Rab

[MSohm]

If you are using a MIDlet, are you using a Canvas?  Or are you using a BlackBerry CLDC application?

[rab]

I am using a BlackBerry CLDC application.

Rab

[pavlikus]

Hi MSohm,

It's CLDC application. Here's how I create and prepare the player:

player = Manager.createPlayer(Utils.filePath(track.getFilename()));

player.addPlayerListener(new PlayerListener() {

    public void playerUpdate(final Player player, String event, Object eventData) {

        if (event == PlayerListener.END_OF_MEDIA) {

            ...

        }

        if (event == PlayerListener.STARTED) {

            ...

        }

    }

});

player.realize();

player.prefetch();

player.start(); 

For pause/resume things I am using player.pause() and player.start() methods. I tried them with and without screen invalidation - both does not work smoothly.

As for seek - I am using player.setMediaTime(long) method call (tried also to do screen invalidation right after it)

it's 4.2.2.123 BlackBerry handheld software version.

[bzubert]

If you embed the Player within your Canvas, the paused screen will remain.  To embed your media player in your Canvas, call VideoControl.initDisplayMode(VideoControl.USE_DIRECT_VIDEO, _myCanvas). 

For those extending the RIM UI, similar functionality is available in 4.3.0, where you would call 

videoControl.initDisplayMode(VideoControl.USE_GUI_PRIMITIVE, "net.rim.device.api.ui.Field" ) , and then add the returned Field to your Screen.

Message Edited by bzubert on 07-23-2008 09:36 AM