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This brings tst_MediaObject to 15/7, from previously not running. Changes
involves:
* Skipping .qrc related tests
* Loading/mimetype detction from file:/ URIs
* State fixes
* As part of previous point, move state and error handling down in
AbstractPlayer.
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Addresses review comment.
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- Forward declaration of QScopedPointer containee type was causing an error
- Audio effect libraries were declared in the .pro file as e.g. -lBassBoostEffect.lib, causing toolchain to try to link statically
- Added several missing MMF:: namespace qualifiers
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Previously the MediaObject propagation was only done for effects, but now it's
for all kinds of nodes. This is needed for AudioOutput.
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This extends the framework for being able to handle audio effects, largely
affecting how the audio chain is set up, connected and disconnected, and
therefore the Backend has been refactored slightly, and the class MediaNode
introduced, see its documentation.
In addition two effects has been written: BassBoost and AudioEqualizer.
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This was causing the stateChanged signal not to propagate up to the Phonon client. In the case of the mediaplayer demo, this causes the app not to show() the ancestor of the VideoWidget, resulting in the layout not being updated when the clip has been loaded.
This means that the hack to explicitly call show() on this ancestor from the backend has been removed.
Now the layout is correctly updated, but the size of VideoOutput::winId()->Rect() is still incorrect, so the hack to hard-code the screen rectangle passed to CVideoPlayerUtility is left in place.
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Video is still not visible; need to debug the initialization of the
VideoOutput object to determine whether DSA is being aborted.
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Now loads, prepares and plays a clip, but the video is not visible because it's not yet wired up to a VideoWidget.
Video 'playback' can be tested using the demos/mediaplayer application, but the menus are not displayed properly, so a video clip filename must be hardcoded in main.cpp and passed to the MediaPlayer constructor.
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and AudioOutput
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Audio playback now working to the same extent as prior to the abstraction, with one regression: the initial volume level in the UI is set to zero, although playback is audible.
Some cleanup is required:
- Functionality common to AudioPlayer and VideoPlayer (e.g. tick timer, changeState function) should be moved into AbstractPlayer.
- Files may be opened by multiple instances of MediaObject at at time. For example, the musicplayer example app uses one instance to read file metadata, and one for the actual playback. In order to avoid KErrInUse errors from the file server, files must be opened with an EShare* flag and passed around by handle. At present this is done in a slightly hacky way (i.e. AbstractPlayer::setSource is renamed to setFileSource).
- The pointer held by MediaObject::m_player must be checked for nullness in many of the public API calls. This could be made cleaner by implementing a stub derivation of AbstractPlayer, which returns sensible default values. Note that, if functionality such as tick timer handling is going to be pushed upwards from AudioPlayer / VideoPlayer, we should add an intermediate class to the hierarchy so that the overhead of constructing DummyPlayer objects is minimised.
At present, media type (audio / video) is only recognised from file streams - this needs to be extended to include HTTP streaming aswell.
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resolved anyway.
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As per discussions with Gareth.
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The patch originally contained all changed done to MMF Phonon, but this
commit contains the changes only Gareth did.
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