Caption formatting samples

Also refer to the PMPDemoApp, which includes these operations in the scrub-bar controls.

private final MediaPlayer.PlaybackEventListener _playbackEventListener =
new MediaPlayer.PlaybackEventListener() {
 @Override
 public void onPrepared() {
 // Set CC style.
 TextFormat tf = new TextFormatBuilder(TextFormat.Font.DEFAULT,
	TextFormat.Size.DEFAULT,
	TextFormat.FontEdge.DEFAULT,
	TextFormat.Color.DEFAULT,
	TextFormat.Color.DEFAULT,
	TextFormat.Color.DEFAULT,
	TextFormat.Color.DEFAULT,
	TextFormat.DEFAULT_OPACITY,
	TextFormat.DEFAULT_OPACITY,
	TextFormat.DEFAULT_OPACITY).toTextFormat();
	mediaPlayer.setCCStyle(tf);
...
 }
}

/**
* Constructor using parameters to initialize a TextFormat.
*
* @param font
* The desired font.
* @param size
* The desired text size.
* @param fontEdge
* The desired font edge.
* @param fontColor
* The desired font color.
* @param backgroundColor
* The desired background color.
* @param fillColor
* The desired fill color.
* @param edgeColor
* The desired color to draw the text edges.
* @param fontOpacity 
* The desired font opacity.
* @param backgroundOpacity
* The desired background opacity.
* @param fillOpacity
* The desired fill opacity. 
*/
public TextFormatBuilder(Font font, Size size, FontEdge fontEdge,
Color fontColor, Color backgroundColor,	
Color fillColor, Color edgeColor,
int fontOpacity, int backgroundOpacity,
int fillOpacity);
/**
* Creates a TextFormat with the parameters supplied to this builder.
*/
public TextFormat toTextFormat();
/**
* Sets the text font.
* @param font The desired font
* @return This builder object to allow chaining calls
*/
public TextFormatBuilder setFont(Font font);
....