B4J Library jWebP WebP Images

Cross platform version of this library: https://www.b4x.com/android/forum/threads/b4x-webp-images.119990/

This library is based on: https://github.com/zakgof/webp4j (Apache 2.0 license)
It allows loading WebP images.
It is a Windows only library.

Usage example:

#CustomBuildAction: After Packager, %WINDIR%\System32\robocopy.exe, ..\Objects\b4xlibs\Files temp\build\bin\ webp.dll
Sub Process_Globals
    Private fx As JFX
    Private MainForm As Form
    Private ImageView1 As ImageView
    Private wp As WebP
End Sub

Sub AppStart (Form1 As Form, Args() As String)
    MainForm = Form1
    MainForm.RootPane.LoadLayout("1") 'Load the layout file.
    MainForm.Show
    wp.Initialize
    ImageView1.SetImage(wp.Decode(File.ReadBytes(File.DirAssets, "1.webp")))
End Sub

The CustomBuildAction is required for the new integrated packager.

Download link: www.b4x.com/b4j/files/jWebP.zip

 

[Informatix]

When I test the library, I see in the log:

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.

Is it normal ?

 

[Erel]

Yes.

 

[Magma]

ImageView1.SetImage(wp.Decode(File.ReadBytes(File.DirAssets, "1.webp")))

Why in new B4J WebP library (1.00) there is no decode... and encode... ??? :-(
is there a tip somewhere how to include it ? - can i have the old lib ?

 

[Erel]

You must explain what are you trying to do.

The old library is this one. It includes a single method which is a Decode method. There is no reason to use this library.
I recommend using the cross platform version instead. The Decode method is named LoadWebP.

 

[Magma]

https://www.b4x.com/android/forum/t...is-it-possible-to-convert-jpg-to-webp.128980/

More specific need that:

https://www.b4x.com/android/forum/t...ble-to-convert-jpg-to-webp.128980/post-809729

 

[Erel]

See the code inside the b4xlib. It is quite simple. You should be able to extend it.

 

[Erel]

Note that posting the same question in three threads is not the correct way to get help...

 

[Magma]

B4xlib .. Never think about it... I will try it.. thanks...

Hey less colors switching.. was different I think..

And jpg to webp bytes.. was a new question... But searching the forum found wp.decode and thought that was existing as solution... Sorry ?

So if found something i will continue posting to:

WebP images and B4J, is it possible to convert jpg to webp ?

Hi there... last days i was testing webp images and i have to say they are very good ! :) B4J has a library here... that can help load them as a simple image... But is it possible to convert bytes or image of jpeg for example ---> to bytes of webp and how (with source code at b4j) ? ps: Some...

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