Support for `FileDescriptor`s?

[autonomousapps]

I notice you don't include support for playing from FileDescriptors. Was this deliberate, or just an oversight?

See:

• https://developer.android.com/reference/android/media/MediaPlayer.html#setDataSource(java.io.FileDescriptor)
• https://developer.android.com/reference/android/media/MediaPlayer.html#setDataSource(java.io.FileDescriptor, long, long)

[Piasy]

PR is welcome :)