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278e05cbf3
External and internal audio players work similarly now. Fixes #950. * inherit a new ExternalAudioPlayer class from AudioPlayerInterface; * use an existing ExternalViewer class to implement ExternalAudioPlayer; * take (const char *, int) instead of std::vector<char> in ExternalViewer constructor to fit into AudioPlayerInterface; * extend ExternalViewer API to let ExternalAudioPlayer stop superseded audio player processes; * make AudioPlayerInterface::play() return an error message string to allow reporting immediate failures from derived classes; * Document AudioPlayerInterface API; * Document AudioPlayerFactory::player(); * use the common audio interface exclusively in ArticleView.
31 lines
943 B
C++
31 lines
943 B
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 AUDIOPLAYERINTERFACE_HH_INCLUDED
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#define AUDIOPLAYERINTERFACE_HH_INCLUDED
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#include <QScopedPointer>
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#include <QString>
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#include <QObject>
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class AudioPlayerInterface : public QObject
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{
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Q_OBJECT
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public:
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/// Stops current playback if any, copies the audio buffer at [data, data + size),
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/// then plays this buffer. It is safe to invalidate \p data after this function call.
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/// Returns an error message in case of immediate failure; an empty string
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/// in case of success.
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virtual QString play( const char * data, int size ) = 0;
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/// Stops current playback if any.
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virtual void stop() = 0;
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signals:
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/// Notifies of asynchronous errors.
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void error( QString message );
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};
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typedef QScopedPointer< AudioPlayerInterface > AudioPlayerPtr;
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#endif // AUDIOPLAYERINTERFACE_HH_INCLUDED
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