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9aa3c44d4e
* add config and GUI support for internal player back end switching;
* make FFmpeg player disabling option consistent with other similar
qmake options by using CONFIG;
* add a new qmake option that disables Qt Multimedia player. This is
useful for GNU/Linux distributions where Qt WebKit and Qt Multimedia
packages depend on different GStreamer versions and don't work
correctly when combined in one application.
The existing FFmpeg+libao internal player back end has a relatively
low-level implementation, which is difficult to understand and improve.
There are at least 3 open internal player issues:
1) many GNU/Linux users have to edit their libao configuration file to
make Goldendict's internal player work (issue #412);
2) libao's pulseaudio plugin does not support 32-bit audio, which
means that many MediaWiki pronunciations don't work with the most
popular GNU/Linux audio driver (issue #949);
3) Ffmpeg::DecoderContext uses deprecated FFmpeg APIs, which causes
compiler warnings and means that this internal player back end
may not compile with a future FFmpeg library version (issue #978).
The Qt Multimedia back end implementation uses the highest-level
Qt audio API and is very simple.
This new back end works flawlessly on my GNU/Linux machine.
I'm not making it the default back end because I don't know how well
it will work on other platforms with different configurations.
34 lines
1 KiB
C++
34 lines
1 KiB
C++
/* This file is (c) 2018 Igor Kushnir <igorkuo@gmail.com>
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* Part of GoldenDict. Licensed under GPLv3 or later, see the LICENSE file */
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#ifndef AUDIOPLAYERFACTORY_HH_INCLUDED
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#define AUDIOPLAYERFACTORY_HH_INCLUDED
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#include "audioplayerinterface.hh"
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#include "config.hh"
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class ExternalAudioPlayer;
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class AudioPlayerFactory
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{
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Q_DISABLE_COPY( AudioPlayerFactory )
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public:
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explicit AudioPlayerFactory( Config::Preferences const & );
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void setPreferences( Config::Preferences const & );
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/// The returned reference to a smart pointer is valid as long as this object
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/// exists. The pointer to the owned AudioPlayerInterface may change after the
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/// call to setPreferences(), but it is guaranteed to never be null.
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AudioPlayerPtr const & player() const { return playerPtr; }
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private:
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void reset();
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void setAudioPlaybackProgram( ExternalAudioPlayer & externalPlayer );
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bool useInternalPlayer;
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Config::InternalPlayerBackend internalPlayerBackend;
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QString audioPlaybackProgram;
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AudioPlayerPtr playerPtr;
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};
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#endif // AUDIOPLAYERFACTORY_HH_INCLUDED
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