패키지 | org.osmf.elements |
클래스 | public class ParallelElement |
상속 | ParallelElement CompositeElement MediaElement EventDispatcher Object |
언어 버전: | ActionScript 3.0 |
제품 버전: | OSMF 1.0 |
런타임 버전: | Flash Player 10, AIR 1.5 |
The media elements that make up a ParallelElement are treated as a single, unified media element. For example, if a ParallelElement encapsulates a image and a piece of audio, the ParallelElement will behave as if it's a single MediaElement with the audio characteristics of the audio file and the display characteristics of the image file.
Typically, a trait on a ParallelElement is a composite or merged combination of that trait on all its children. When a new media element is added as a child of the media composition, either its traits or the composite's traits are adjusted to make the traits of the media composition and its children consistent.
As an example of the first case, consider AudioTrait. If a client adds a new MediaElement that has its AudioTrait volume at 0.5 to a ParallelElement that has its AudioTrait volume at 0.3, the AudioTrait volume for the child MediaElement is set to 0.3 to be consistent with ParallelElement's trait.
As an example of the second case, consider BufferTrait. If the added MediaElement has a BufferTrait, the ParallelElement's BufferTrait may need to "grow" if the new MediaElement has a larger buffer than any of its other children. In this case, the buffer of the ParallelElement adjusts to the size of its new child.
Here is how each trait is expressed when in parallel:- AudioTrait - The composite trait keeps the audible properties of all children in sync. When the volume of a child element (or the composite element) is changed, the volume is similarly changed for all audible children (and for the composite trait).
- BufferTrait - The composite trait is buffering if any child is buffering. Its length and size are the length and size of the child with the longest buffer. Its starting position is the minimum (earliest) starting position of all of its children.
-
DisplayObjectTrait - If one or more of the composite’s children has the DisplayObjectTrait,
the composite trait’s spatial dimensions are defined by the bounding box
of the DisplayObject referenced by
the
displayObject
property of the composite's DisplayObjectTrait. If none of the composite’s children has the DisplayObjectTrait, the composite trait'smediaWidth
is the width of its widest child and itsmediaHeight
is the height of its tallest child. - DRMTrait - The composite trait attempts to keep the DRM state of all children in sync. When a child element is authenticated, all DRM-enabled children are simultaneously authenticated.
- DVRTrait - The composite trait attempts to keep the DVR state of all children in sync.
-
DynamicStreamTrait - The composite trait attempts to keep the dynamic streaming
state of all children in sync. Specifically, it attempts to keep the
autoSwitch
property the same for all elements, and the current stream items within a similar bitrate range. - LoadTrait - The composite trait keeps the load state of all children in sync. When a child element (or the composite element) is loaded, all loadable children (and the composite element) are simultaneously loaded.
- PlayTrait - The composite trait keeps the pause and play states of all children in sync. When a child element (or the composite element) is paused, all pausable children (and the composite element) are simultaneously paused. When a child element (or the composite element) is played, all playable children (and the composite element) are simultaneously played.
- SeekTrait - The composite trait keeps the seek state of all children in sync. When a child element (or the composite element) performs a seek, all seekable children (and the composite element) simultaneously perform that same seek.
- TimeTrait - The composite trait represents a timeline that encapsulates the timelines of all children. Its duration is the maximum of the durations of all children. Its position is kept in sync for all children, with the obvious caveat that a child's position will never be greater than its duration.
메서드 | 정의 주체 | ||
---|---|---|---|
Constructor. | ParallelElement | ||
Adds the specified child to the end of the list. | CompositeElement | ||
Adds the child to the list at the specified index. | CompositeElement | ||
addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
리스너에서 이벤트 알림을 받을 수 있도록 EventDispatcher 객체에 이벤트 리스너 객체를 등록합니다. | EventDispatcher | ||
Adds a Metadata object to this MediaElement under the specified namespace URL. | MediaElement | ||
이벤트를 이벤트 흐름으로 전달합니다. | EventDispatcher | ||
Gets the child at the specified index. | CompositeElement | ||
Returns the index of the child if it is in the list such that
getChildAt(index) == child. | CompositeElement | ||
Returns the Metadata object that is stored under this MediaElement with
the specified namespace URL. | MediaElement | ||
Returns the media trait of the specified type. | MediaElement | ||
EventDispatcher 객체에 특정 유형의 이벤트에 대한 리스너가 등록되어 있는지 여부를 확인합니다. | EventDispatcher | ||
지정된 속성이 객체에 정의되어 있는지 여부를 나타냅니다. | Object | ||
Determines whether this media element has a media trait of the
specified type. | MediaElement | ||
Object 클래스의 인스턴스가 매개 변수로 지정된 객체의 프로토타입 체인에 있는지 여부를 나타냅니다. | Object | ||
지정된 속성이 존재하고 열거 가능한지 여부를 나타냅니다. | Object | ||
Removes the specified child and returns it. | CompositeElement | ||
Removes the child at the specified index and returns it. | CompositeElement | ||
EventDispatcher 객체에서 리스너를 제거합니다. | EventDispatcher | ||
Removes the Metadata object that was stored under this MediaElement with
the specified namespace URL. | MediaElement | ||
루프 작업에서 동적 속성을 사용할 수 있는지 여부를 설정합니다. | Object | ||
로캘별 규칙에 따라 서식이 지정된 이 객체의 문자열 표현을 반환합니다. | Object | ||
지정된 객체의 문자열 표현을 반환합니다. | Object | ||
지정된 객체의 프리미티브 값을 반환합니다. | Object | ||
이 EventDispatcher 객체 또는 조상 객체에 지정한 이벤트 유형에 대한 이벤트 리스너가 등록되어 있는지 여부를 확인합니다. | EventDispatcher |
ParallelElement | () | 생성자 |
public function ParallelElement()
언어 버전: | ActionScript 3.0 |
제품 버전: | OSMF 1.0 |
런타임 버전: | Flash Player 10, AIR 1.5 |
Constructor.
package { import flash.display.Sprite; import flash.display.StageAlign; import flash.display.StageScaleMode; import org.osmf.elements.LightweightVideoElement; import org.osmf.elements.ParallelElement; import org.osmf.elements.VideoElement; import org.osmf.layout.LayoutMetadata; import org.osmf.layout.LayoutMode; import org.osmf.media.MediaPlayer; import org.osmf.media.MediaPlayerSprite; import org.osmf.media.URLResource; public class ParallelElementExample extends Sprite { public function ParallelElementExample() { super(); stage.scaleMode = StageScaleMode.NO_SCALE; stage.align = StageAlign.TOP_LEFT; var mediaPlayerSprite:MediaPlayerSprite = new MediaPlayerSprite(); var parallelElement:ParallelElement = new ParallelElement(); var videoElement:LightweightVideoElement = new LightweightVideoElement(); videoElement.resource = new URLResource("http://mediapm.edgesuite.net/strobe/content/test/AFaerysTale_sylviaApostol_640_500_short.flv"); var videoElement2:LightweightVideoElement = new LightweightVideoElement(); videoElement2.resource = new URLResource("http://mediapm.edgesuite.net/strobe/content/test/elephants_dream_768x428_24_short.flv"); parallelElement.addChild(videoElement); parallelElement.addChild(videoElement2); // Add a vertical layout var layout:LayoutMetadata = new LayoutMetadata(); layout.layoutMode = LayoutMode.VERTICAL; parallelElement.addMetadata(LayoutMetadata.LAYOUT_NAMESPACE, layout); addChild(mediaPlayerSprite); mediaPlayerSprite.media = parallelElement; } } }
Tue Jun 12 2018, 03:17 PM Z