Qt 5.9.4 is a bug-fix release. It maintains both forward and backward
compatibility (source and binary) with Qt 5.9.0.

For more details, refer to the online documentation included in this
distribution. The documentation is also available online:

http://doc.qt.io/qt-5/index.html

The Qt version 5.9 series is binary compatible with the 5.8.x series.
Applications compiled for 5.8 will continue to run with 5.9.

Some of the changes listed in this file include issue tracking numbers
corresponding to tasks in the Qt Bug Tracker:

https://bugreports.qt.io/

Each of these identifiers can be entered in the bug tracker to obtain more
information about a particular change.

****************************************************************************
*                               Qt 5.9.4 Changes                           *
****************************************************************************

QtMultimedia
------------
- [QTBUG-64407] Fixed memory leak in QSoundEffect. The sample cache didn't
  release all the resources that where allocated by its worker thread.

****************************************************************************
*                      Platform Specific Changes                           *
****************************************************************************

Windows
-------

- [QTBUG-51405] Fixed bad rendering when a video widget got overlapped by
  a MDI subwindow.
- [QTBUG-64044] Fixed calculation of pixel aspect ratio due to precision loss.
- [QTBUG-52713] Fixed memory leak in the DirectShow filter graph.
- [QTBUG-61407] Fixed video rendering in QML when using ANGLE.
- [QTBUG-54242] Fixed crash in QAudioDeviceInfo::availableDevices() that could
  happen if one of the device returned an empty list for its supported formats.
- [QTBUG-35916] Removed unneeded delay in the audio output, which caused an
  unnecessary long wait when stopping the QSoundEffect.
- [QTBUG-53534] Fixed potential deadlock in the media player when attempting
  to load a new resource while the media player was in loading state.

iOS
---
- [QTBUG-37955] Fixed front facing camera's orientation.

Android
-------
- [QTBUG-52366] Fixed a crash in the camera the could happen when an
  application got suspended while it still was processing a captured image.
- [QTBUG-64764] Fixed regression that would cause the video output to be shown
  upside down.