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5. use none none generation todevelop none on none Web application framework audio source by c none for none alling and replaces the playlarge.png with the image pause-large.

png. If, however, audio is currently playing, then the audio is stopped and the image is replaced back with play-large.png.

. The other ImageVi ew instance loads the stop-large.png icon. When the user clicks on it, it calls its action-handler to first stop the audio playback by calling player.

stop(). Then it toggles the image for the "play" button back to icon play-large.png.

. As mentioned in t none none he introduction, JavaFX will play the MP3 file format on any platform where the JavaFX format is supported. Anything other than MP3 must be supported natively by the OS"s media engine where the file is played back. For instance, on my Mac OS, I can play MPEG-4, because it is a supported playback format by the OS"s QuickTime engine.

. There"s more... The Media class m none none odels the audio stream. It exposes properties to configure the location, resolves dimensions of the medium (if available; in the case of audio, that information is not available), and provides tracks and metadata about the resource to be played. The MediaPlayer class itself is a controller class responsible for controlling playback of the medium by offering control functions such as play(), pause(), and stop().

It also exposes valuable playback data including current position, volume level, and status. We will use these additional functions and properties to extend our playback capabilities in the recipe Controlling media playback in this chapter..

See also Accessing media assets Loading and displaying images with ImageView Playing video with MediaView The previous reci none for none pe shows you how to play audio using the JavaFX Media API. This recipe builds on the versatility of the Media API and extends the previous recipe, Playing audio with MediaPlayer, and creates a video player with a few changes to the code..

JavaFX Media Getting ready This recipe uses classes from the Media API located in the package.

As mentioned in the introduction of this recipe, the example presented here extends the code from the previous recipe to transform the audio player to now play video. We are going to reuse the same icons and the same logic to control the playback of the video. To review how to configure and use the Media API for playback, review the previous recipe Playing audio with MediaPlayer.

To illustrate video playback, the application plays back the award-winning, open-sourced, short, animated movie Big Buck Bunny. By default, the recipe will play the 854 x 480 H.264 version found at the address http://mirror. bigbuckbunny_movies/

. How to do it... Similar to audio, playing video is simple. The abbreviated code given next highlights the portion of the code that is changed to be able to display video. You can see the full listing of the code at ch05/source-code/src/media/VideoPlayerDemo.

fx.. def w = 800; def none for none h = 600; def maxW = w * 0.8; def maxH = h * 0.7; var scene:Scene; def mediaSource = "http://mirror."; def player = MediaView{ layoutX:(w - maxW)/2 layoutY:(h-maxH)/2 mediaPlayer:MediaPlayer {media:Media{source:mediaSource}} fitWidth:maxW fitHeight:maxH } def controls = Group { layoutX:(w-110)/2 layoutY:h-100 effect:Reflection{ fraction:0.

4 bottomOpacity:0.1 topOffset:3} content:[ HBox{spacing:10 content:[ ImageView{id:"playCtrl" image:Image{url:"{__DIR__}play-large.png"} onMouseClicked:function(e:MouseEvent){ def playCtrl = e.

source as ImageView;. 5 if(not(player. mediaPlayer.status == MediaPlayer.

PLAYING)){ playCtrl.image = Image{ url:"{__DIR__}pause-large.png" } player.; }else if(player.mediaPlayer.

status == MediaPlayer.PLAYING){ playCtrl.image = Image{ url:"{__DIR__}play-large.

png" } player.mediaPlayer.pause(); } } } ImageView{id:"stopCtrl" image:Image{url:"{__DIR__}stop-large.

png"} onMouseClicked:function(e:MouseEvent){ def playCtrl = e.source as ImageView; if(player.mediaPlayer.

status == MediaPlayer.PLAYING){ playCtrl.image = Image{ url:"{__DIR__}play-large.

png" } player.mediaPlayer.stop(); } } } ]} ] }.

When the Group va none for none riable controls and the MediaView instance"s player are placed on the scene, the application will create a window as shown in the next screenshot.. JavaFX Media How it works... While playing aud io only requires the use of the classes Media and MediaPlayer, playing video requires an additional class called the MediaView. It is of type Node and can be used to display the content of a video on the screen. Let"s take a closer look at the code:.

The MediaView the none for none first major component to be initialized is the MediaView assigned to variable player. The code uses the MediaView instance to configure the dimensions and the location where the video will be rendered. In order to control playback, the code assigns the player.

mediaPlayer property an instance of MediaPlayer, used to control playback. MediaPlayer is then assigned an instance of Media (through the property to specify the location of the video resource we want to playback.

The controls the GUI controls in this example work the exact same way as described in Playing audio with MediaPlayer. We use a group of image icons to represent playback functions play, pause, and stop. When the play icon is pressed, it is starts playing the video by calling the player. function and toggles itself to the pause icon. When the pause icon is pressed, it pauses the video using function player.

mediaPlayer.pause(). Finally, when the user presses the stop button, it makes a call to player.

mediaPlayer.stop() to stop playback and toggles the play button back to the play icon..

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