de.marcreichelt.webp_backport

Class WebPBackport

java.lang.Object

de.marcreichelt.webp_backport.WebPBackport

public class WebPBackport
extends java.lang.Object

Helper for loading WebP images on old and new Android platforms. Loads a native decoding library 'libwebp' when the current Android version does not support WebP.

Constructor Summary

Constructors

Constructor and Description
WebPBackport()

Method Summary

Modifier and Type	Method and Description
static android.graphics.Bitmap	decode(byte[] encoded) Decodes any image supported by the system or the WebP library.
static void	forceLoadLibrary()
static android.graphics.Rect	getSize(byte[] encoded) Get size of an encoded WebP image.
static boolean	isLibraryUsed() Is the native library used to decode WebP images?
static boolean	isWebPSupported() Returns whether WebP images can be decoded.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

WebPBackport

public WebPBackport()

Method Detail

forceLoadLibrary

public static void forceLoadLibrary()

decode

public static android.graphics.Bitmap decode(byte[] encoded)

Decodes any image supported by the system or the WebP library.

Note that this method not only supports WebP, but supports PNG, JPG etc. as well. But if WebP data is detected this will do some more magic. :-)

Parameters:

encoded - The encoded image data (e.g. from a stream, resource, etc.).

Returns:

The decoded image, or null if it could not be decoded successfully.

isWebPSupported

public static boolean isWebPSupported()

Returns whether WebP images can be decoded. More exact: if WebP is supported by the platform or by the included native library.

Returns:

true if WebP is supported.

isLibraryUsed

public static boolean isLibraryUsed()

Is the native library used to decode WebP images?

Returns:

true if the native library is used.

getSize

public static android.graphics.Rect getSize(byte[] encoded)

Get size of an encoded WebP image.

Parameters:

encoded - The WebP data.

Returns:

The size of the WebP image, of null if something went wrong.