Blackbe;rry JAVA DEVELOPMENT ENVIRONMENT - - MULTIMEDIA

BlackBerry Java Development

Environment

Multimedia Development Guide

BlackBerry Java Development Environment Multimedia Development Guide

Last modified: 14 July 2008

Part number: 13697641

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Contents

1Working with multimedia in a BlackBerry Application.................................................................................. 7

BlackBerry Applications and multimedia.......................................................................................................7

2Using audio and video in a BlackBerry Application.......................................................................................9

Accessing stored media ................................................................................................................................... 9

Access media on a BlackBerry smartphone........................................................................................... 9

Access media on a microSD card ............................................................................................................9

Playing media in the BlackBerry Browser ..................................................................................................... 9

Play audio in the BlackBerry Browser .................................................................................................... 9

Play a video in the BlackBerry Browser.................................................................................................10

Playing media in the media application.......................................................................................................10

Start the media application with or without content..........................................................................10

Streaming data from a remote source to the media application .......................................................11

Creating a BlackBerry Application that plays media files.........................................................................15

Change the state of a Player .................................................................................................................. 17

Play media in a BlackBerry Application ................................................................................................17

Receive and send media application events ........................................................................................19

Create different kinds of players...........................................................................................................20

Record audio on a BlackBerry smartphone................................................................................................. 24

Send audio to a Bluetooth enabled headset...............................................................................................26

3Using SVG content in a BlackBerry Application...........................................................................................29

Using SVG content .........................................................................................................................................29

Download SVG content..................................................................................................................................29

Display SVG content from the Plazmic Media Engine version 4.2 ..................................................29

Play SVG content.....................................................................................................................................30

Listen for events related to SVG content..............................................................................................31

Code sample: Manage events when an application downloads SVG content............................... 32

Create a custom connection to SVG content...................................................................................... 33

4Working with images from the camera...........................................................................................................35

Creating an image with the camera............................................................................................................. 35

Start the camera from a BlackBerry Application................................................................................35

Receive notification of file system events................................................................................................... 35

Detect when an image is added or removed in the file system........................................................35

Retrieving an image from the file system ................................................................................................... 37

Retrieve an image from memory on a BlackBerry device.................................................................. 37

Retrieve an image from a microSD card .............................................................................................. 37

Moving an image in the file system ............................................................................................................. 37

Move an image within the same directory of the file system ........................................................... 37

Move an image to a different directory of the file system ................................................................ 37

Deleting an image from the file system ...................................................................................................... 38

Delete an image from memory on a BlackBerry device.....................................................................38

Delete an image from a microSD card .................................................................................................39

5Working with images ..........................................................................................................................................41

Drawing and positioning images...................................................................................................................41

Using images...................................................................................................................................................43

Use unprocessed images........................................................................................................................43

Use encoded images...............................................................................................................................43

6Code samples ......................................................................................................................................................45

Code sample: Retrieving and displaying SVG content .............................................................................45

Code sample: Implementing a listener to download SVG content .........................................................46

Code sample: Implementing a custom connection to SVG content .......................................................48

Code sample: Using an unprocessed image to recreate an encoded image.........................................50

Code sample: Drawing a new bitmap using an existing bitmap ..............................................................51

Working with multimedia in a BlackBerry

Application

BlackBerry Applications and multimedia

You can create a BlackBerry® Application that plays media in the BlackBerry® Browser, or plays media in the

media application on the BlackBerry smartphone. You can also create a BlackBerry Application that is a media

application. You can create a BlackBerry Application that is a media application and plays binary SVG content. You

can create an application that records audio or sends audio to a Bluetooth® enabled headset.

For more information about media types that the BlackBerry smartphone supports, visit www.blackberry.com/

btsc/support to read knowledge base article KB05482.

BlackBerry Applications and multimedia

BlackBerry Java Development Environment Multimedia Development Guide

Using audio and video in a BlackBerry

Application

Accessing stored media

You can create a BlackBerry® Application that uses the Connector class and FileConnection interface to access

media stored on the BlackBerry smartphone or a microSD card.

Access media on a BlackBerry smartphone

>InvokeConnector.open(). Pass the following parameters: the file protocol and the location of the media file

on the BlackBerry® smartphone.

FileConnection fconn = (FileConnection)Connector.open("file:///store/home/user/audio/

newfile.mp3");

Access media on a microSD card

>InvokeConnector.open(). Pass the following parameters: the file protocol and the location of the media file

on the microSD card.

FileConnection fconn = (FileConnection)Connector.open("file:///SDCard/music/newfile.mp3");

Playing media in the BlackBerry Browser

A BlackBerry® Application can use the methods of the Browser class and BrowserSession class to play media in

the BlackBerry® Browser.

Play audio in the BlackBerry Browser

1. Invoke Browser.getDefaultSession().

BrowserSession soundclip = Browser.getDefaultSession();

Accessing stored media

Playing media in the BlackBerry Browser

Playing media in the media application

Creating a BlackBerry Application that plays media files

Record audio on a BlackBerry smartphone

Send audio to a Bluetooth enabled headset

BlackBerry Java Development Environment Multimedia Development Guide

2. Invoke BrowserSession.displaypage().

soundclip.displayPage("file:///SDCard/BlackBerry/music/yourFile.mp3");

Play a video in the BlackBerry Browser

1. Invoke Browser.getDefaultSession().

BrowserSession soundclip = Browser.getDefaultSession();

2. Invoke BrowserSession.displaypage().

soundclip.displayPage("file:///SDCard/BlackBerry/Video/soccergame.avi");

Playing media in the media application

On the BlackBerry® smartphones that include the media application, a BlackBerry Application can use the

javax.microedition.content and net.rim.device.api.content packages to start the media application

with or without content.

Start the media application with or without content

1. Import the javax.microedition.content package into your application code.

Import javax.microedition.content;

2. Invoke Registry.getRegistry(). Pass the following parameter: the classname parameter which is the

name of the class in the application that extends javax.microedition.midlet.MIDlet,

net.rim.device.api.system.Application, or net.rim.device.api.ui.UiApplication. Store a

reference to the returned object in a Registry object.

Registry reg = Registry.getRegistry(String classname);

3. Perform one of the following tasks:

4. To start the media application, invoke Registry.invoke(Invocation invocation). Pass the following

parameter: an Invocation object.

reg.invoke(invocation)

Task Steps

Start the media application

with no content.

> Create a new instance of an Invocation object. Store a reference to the object in an Invocation

object.

Invocation invocation = new Invocation(null, null,

BlackBerryContentHandler.ID_MEDIA_CONTENT_HANDLER);

Start the media application

with content.

> Create a new instance of an Invocation object. Use a media type supported by the media

application as a parameter, and store a reference to the object in an Invocation object.

Invocation invocation = new Invocation(file://...);

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