JavaFX 19 - Media object bug

[Alessandro Mercier]

Hello all,

After this commit:
https://github.com/openjdk/jfx/commit/d1110f479567c314ecb6848700bcf4552509d7e9

Creating a new Media object using a MP3 file in the resources of a project,
you can get exceptions:

Exception in thread "JavaFX Application Thread" MediaException:
MEDIA_UNSUPPORTED : Unrecognized file signature!
at javafx.media at 20-ea/javafx.scene.media.Media.<init>(Media.java:411)

At first glance, the error is in this Locator file in the JavaFX source
code:
https://github.com/openjdk/jfx/blob/master/modules/javafx.media/src/main/java/com/sun/media/jfxmedia/locator/Locator.java

*Steps to reproduce the bug:*
1. Create a new Media object and load an MP3 from the resources
2. Watch the Media object throw a MediaException: MEDIA_UNSUPPORTED :
Unrecognized file signature!

*Example code that produces the bug:*
final MediaPlayer mediaPlayer = new MediaPlayer(new
Media(getClass().getResource("/path/to/file.mp3").toExternalForm()));

*Extra:*
I've made a free MP3 file available to try with here (royalty free):
https://codedead.com/static.mp3

I've also got a GIT repository in which the exception occurs immediately
when running the Gradle task 'application':
https://github.com/CodeDead/opal/tree/development (please make sure to use
the development branch as this branch makes use of the latest JavaFX
versions)

Oddly enough, it does not always happen, and loading the file directly from
a file location instead of the project resources seems to work, but when
loading from the resources, you get the exception that the media file
signature is not recognized.
I don't see a problem with the media files themselves, encoding is all
fine, at first glance and because it worked in JavaFX 18.0.2, creating a
Media object using a URI to a project resources location should work in
newer versions as well, I think. The same MP3 file does work when you load
it from the disk instead of the project resources so this makes it a bug, I
believe.

The work-around right now is to revert back to JavaFX version 18.0.2.

*System / OS / Runtime info:*
Linux Fedora 36
5.19.8-200.fc36.x86_64
openjdk version "18.0.2" 2022-07-19
OpenJDK Runtime Environment (Red_Hat-18.0.2.0.9-1.rolling.fc36) (build
18.0.2+9)
OpenJDK 64-Bit Server VM (Red_Hat-18.0.2.0.9-1.rolling.fc36) (build
18.0.2+9, mixed mode, sharing)

Thank you and kind regards

Alessandro Mercier
-- 
CodeDead Administrator
https://codedead.com/
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