Adobe® Flex® 4 Language Reference
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mx.graphics.codec 

The mx.graphics.codec package contains classes to convert Bitmap images to other image formats.



Interfaces
 InterfaceDescription
 IImageEncoder The IImageEncoder interface defines the interface that image encoders implement to take BitmapData objects, or ByteArrays containing raw ARGB pixels, as input and convert them to popular image formats such as PNG or JPEG.
Classes
 ClassDescription
 JPEGEncoder The JPEGEncoder class converts raw bitmap images into encoded images using Joint Photographic Experts Group (JPEG) compression.
 PNGEncoder The PNGEncoder class converts raw bitmap images into encoded images using Portable Network Graphics (PNG) lossless compression.