Java DTV API 1.3
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|Java DTV APIs|
|com.sun.dtv.application||Application Management and Lifecycle Control.|
|com.sun.dtv.broadcast||Access to broadcast files and streams.|
|com.sun.dtv.broadcast.event||Access to broadcast events.|
|com.sun.dtv.filtering||Provides support for MPEG section filtering.|
|com.sun.dtv.locator||This packages defines locators for use throughout the system.|
|com.sun.dtv.media||Package for media relevant basic functionality and Freeze Resume controls.|
|com.sun.dtv.media.audio||Packages for Audio Language Control.|
|com.sun.dtv.media.control||Additional Controls to retrieve informations about the presented media.|
|com.sun.dtv.media.dripfeed||Control to provide still picture data to a JMF Player, the data are under the control of the Application.|
|com.sun.dtv.media.format||Control for the Video Format.|
|com.sun.dtv.media.language||Provides the basic functionality to query and set the language for Audio,Subtitle and Close Captioning.|
|com.sun.dtv.media.text||Subtitle and Close Captioning Control.|
|com.sun.dtv.media.timeline||Media Time Line Control.|
|com.sun.dtv.platform||Provides classes that are specific to the DTV platform, in particular classes that are specific to the consumer.|
|com.sun.dtv.resources||Provides a basic framework for scarce resources.|
|com.sun.dtv.security||Package for the additional security functionality.|
|com.sun.dtv.service||This package provides an interface for accessing the Low Level SI database.|
|com.sun.dtv.smartcard||Package that provides additional smartcard functionality.|
|com.sun.dtv.test||Provides an extensive test harness support.|
|com.sun.dtv.transport||Provides access to entities contained in a transport stream.|
|com.sun.dtv.tuner||Provides APIs for access to and control of a broadcast network interface (or "tuner") used for the reception of transport streams.|
|User Interface APIs|
|com.sun.dtv.lwuit||Main widget package containing the component/container "composite" similar both in terminology and design to Swing/AWT.|
|com.sun.dtv.lwuit.animations||All components are animatable by potential and additional animations (unrelated to a specific component) can be installed on the fly, transitions between forms are also handled as part of this package.|
|com.sun.dtv.lwuit.events||Observable pattern event listeners in the spirit of AWT 1.1's event dispatching architecture, all events are dispatched on the EDT (Event Dispatch Thread).|
|com.sun.dtv.lwuit.geom||Contains classes related to geometry locations and calculations such as rectangle and size.|
Layout managers allow a
Lists are highly customizable and serve as the basis for
|com.sun.dtv.lwuit.plaf||Look of the application can be fully customized via this package, it represents a rendering layer that can be plugged in separately in runtime and themed to provide any custom look.|
|com.sun.dtv.lwuit.util||Utility features that are either too domain specific or don't "fit" into any other packages.|
|com.sun.dtv.ui||TV specific UI functionality.|
|com.sun.dtv.ui.event||TV specific UI functionality event subpackage.|
This document describes the API and semantics of the Java DTV platform.
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All rights reserved to Sun Microsystems, Inc. Use is subject to license terms.
This document uses definitions specified in [RFC-2119]
|must||This word, or the terms required or shall, mean that the definition is an absolute requirement of the specification.|
|must not||This phrase, or the phrase shall not, mean that the definition is an absolute prohibition of the specification.|
|should||This word, or the adjective recommended, mean that there may exist valid reasons in particular circumstances to ignore a particular item, but the full implications must be understood and carefully weighed before choosing a different course.|
|should not||This phrase, or the phrase not recommended mean that there may exist valid reasons in particular circumstances when the particular behavior is acceptable or even useful, but the full implications should be understood and the case carefully weighed before implementing any behavior described with this label.|
|may||This word, or the adjective optional, mean that an item is truly optional. One vendor may choose to include the item because a particular marketplace requires it or because the vendor feels that it enhances the product while another vendor may omit the same item. An implementation which does not include a particular option must be prepared to interoperate with another implementation which does include the option, though perhaps with reduced functionality. In the same vein an implementation which does include a particular option must be prepared to interoperate with another implementation which does not include the option (except, of course, for the feature the option provides).|
The following diagram depicts the context in which the Java DTV specification is placed:
Every Java DTV runtime must support the following requirements.
The Content Types that MUST be supported are defined in ABNT NBR 15606-1 "Digital terrestrial television - Data coding and transmission specification for digital broadcasting Part 1: Data coding specification".
The Java DTV Content and Application model is specified to define the packaging of content and applications, to enable authentication of each, and to authorize applications to access functions and APIs that are otherwise restricted. This packaging mechanism can also be used for non-Java applications.
The Certificate Management is specified to define the Certificate Profile and Certificate Revocation List for this specification.
The Java TV SI and low level SI Integration section describes the integration of the Java TV service information API and the low level SI API
The Persistent Storage is made available to authorized applications.
The Return Channel Security specifies the security TLS version, the mandatory cipher suites and the API to provide TLS/SSL support.
Service selection of conflicting service components, e.g. simultaneous selection of more than one subtitle or different audio languages, shall be resolved by assuming that the last specified service components shall be selected.
If an application exceeds the system resources (e.g. request multiple streams) the assumption is made, that the last valid selection is reflecting the intention of the application.
If an application is temporary losing resources, e.g. the media decoder is used by a different application, the previous state is not restored, when the resource is available again.
com.sun.dtv and is protected. A compliant implementation
of this specification may not subset the API defined in this
specification. Additional classes and interfaces may only be added
outside these packages.
The Java DTV Specification consists of Java DTV APIs and Java TV APIs, added to the base set of common Java Runtime components including the Connected Device Configuration, Foundation Profile, and Personal Basis Profile.
The Java DTV APIs are illustrated below:
The following picture shows the Java package structure of the Java DTV API:
The Java DTV Java Runtime Components are:
System.currentTimeMillis()is less or equal to 10 ms.
Object.wait(long timeout)waits at least for 10 ms in any case.
System.err, but shall not use
Runtime.traceMethodCalls()may be used for debugging without negative impact on the execution of applications. These APIs don't interfere with other APIs and the output is not displayed to the end user.
java.lang.SecurityManager.checkPackageAccessto prevent applications from accessing system implementation classes where the security of a terminal would be broken.
URLLocators to be able to load classes or resources from the BroadcastFilesystem, return channel and other network connections.
java.netimplementation with respect to connectivity control across platform boundaries is described in NetworkDevice
com.sun.broadcast.BroadcastFile. These clarification also apply to
java.io.Fileand subsequent input/output operations using other classes in
javax.microedition.xlet.XletContextMUST also implement
javax.tv.xlet.XletContext. The interfaces have common methods and prescribed behaviors. This enables applications to use the instance with an explicit cast to
javax.tv.xlet.XletContextin calls to
This specification describes the Java TVTM API, a Java Micro Edition (Java ME) Optional Package that provides control over functionality unique to television receivers. Some of the features that the Java TV API provides are: access to the service information database, content selection, TV-specific media player control, and access to data that is broadcast with the television signal.
The clarifications are:
javax.tv.xletis deprecated. All Java DTV Applications use the javax.microedition.xlet.Xlet Lifecycle defined in Personal Basis Profile.
javax.tv.graphicspackage is deprecated. PBP provides the AWT container from the
XletContext.getContainerand support for colors via
javax.media.Playerinstance that is presenting a service, the following rules apply:
getControlsMUST be renewed
javax.media.Playerwhen playing content delivered in a transport streams is just a time value that progresses as the media stream is played. The value does not have any direct relation to the value of the streaming content System Time Clock in the receiver.
javax.microedition.apduMUST be supported.
javax.microedition.apdupackage SHOULD NOT be supported.
|18-Nov-2009||1.3 - Maintenance Release|
|17-Jul-2009||1.2.1 - Maintenance Release|
|01-Jul-2009||1.2 - Maintenance Release|
|28-Feb-2009||1.1 - Maintenance Release|
|12-Dec-2008||1.0 - Final Release|
Java DTV API 1.3
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