| Qt 5.4 introduces many new features and improvements as well as bugfixes |
| over the 5.3.x series. For more details, refer to the online documentation |
| included in this distribution. The documentation is also available online: |
| |
| http://qt-project.org/doc/qt-5.4 |
| |
| The Qt version 5.4 series is binary compatible with the 5.3.x series. |
| Applications compiled for 5.3 will continue to run with 5.4. |
| |
| Some of the changes listed in this file include issue tracking numbers |
| corresponding to tasks in the Qt Bug Tracker: |
| |
| http://bugreports.qt-project.org/ |
| |
| Each of these identifiers can be entered in the bug tracker to obtain more |
| information about a particular change. |
| |
| **************************************************************************** |
| * Important Behavior Changes * |
| **************************************************************************** |
| |
| - Using QAudioOutput and QSoundEffect with the PulseAudio backend won't |
| cause the system volume to be automatically changed to the maximum value |
| anymore. Audio streams will now respect the system-wide volume unless |
| explicitly set with setVolume(). |
| - On Linux, both Alsa and PulseAudio backends are now present. PulseAudio |
| is used by default if available on the system and if the server is |
| running, otherwise Alsa is used instead. |
| |
| **************************************************************************** |
| * Library * |
| **************************************************************************** |
| |
| QtMultimedia |
| ------------ |
| |
| - Added new QAbstractPlanarVideoBuffer class. |
| |
| - Camera (QML): |
| * Added deviceId, displayName, position, orientation, metadata, |
| viewfinder.resolution, viewfinder.minimumFrameRate and |
| viewfinder.maximumFrameRate properties. |
| * Camera device can be selected by setting the deviceId or position |
| properties. |
| * |
| |
| - QtMultimedia global QML object: |
| * Added defaultCamera and availableCameras properties. |
| |
| - QAbstractVideoBuffer: |
| * Added mapPlanes() function. |
| |
| - QVideoFrame: |
| * Added support for planar video formats. New planeCount(), |
| bytesPerLine(int plane) and bits(int plane) functions. |
| |
| - [QTBUG-40515] Improved PLS parser. It is now more permissive, allowing |
| to load virtually any kind of PLS file. It also correctly resolve |
| relative paths. |
| |
| **************************************************************************** |
| * Platform Specific Changes * |
| **************************************************************************** |
| |
| Android |
| ------- |
| |
| - Changing a media player's position after reaching the end of a media |
| now correctly works. |
| - [QTBUG-40314] Fixed playing a QMediaPlaylit with a QMediaPlayer. |
| |
| Linux |
| ----- |
| |
| - Added support for QCameraInfo::position() and QCameraInfo::orientation(). |
| - Added support for QCameraFocus::customFocusPoint. |
| - QMediaRecorder::duration() now returns the correct value when recording |
| with a camera source. |
| - QMediaMetaData::ContributingArtist and QMediaMetaData::AlbumArtist |
| now map to the correct metadata. |
| - Fixed QMediaPlayer's metaDataAvailableChanged() signal, which was never |
| emitted. |
| |
| OS X |
| ---- |
| |
| - OS X 10.6 not being supported anymore, the QuickTime backend has been |
| removed. |
| |
| QNX |
| --- |
| |
| - [QTBUG-40746] Fixed crash when detroying a QML VideoOutput or Video item. |
| |
| Windows |
| ------- |
| |
| - [QTBUG-32481] Fixed various memory leaks when using a media player. |
| - [QTBUG-39980] Fixed crash occasionally happening when playing and |
| stopping repeatedly a media with QMediaPlayer. |
| - [QTBUG-40954] Buffers retrieved with QAudioProbe now have a correct |
| startTime(). |
| - [QTBUG-41158] Fixed crash occasionally happening when destroying a |
| QML MediaPlayer. |
| |
| WinRT |
| ----- |
| |
| - Enabled media player support for WinRT. |
| - Enabled basic camera support for WinRT (viewfinder, still image capture |
| and camera device selection). |
