goldendict-ng/src/externalaudioplayer.hh

50 lines
1.4 KiB
C++

/* This file is (c) 2018 Igor Kushnir <igorkuo@gmail.com>
* Part of GoldenDict. Licensed under GPLv3 or later, see the LICENSE file */
#ifndef EXTERNALAUDIOPLAYER_HH_INCLUDED
#define EXTERNALAUDIOPLAYER_HH_INCLUDED
#include <QScopedPointer>
#include <QString>
#include "audioplayerinterface.hh"
class ExternalViewer;
class ExternalAudioPlayer: public AudioPlayerInterface
{
Q_OBJECT
public:
ExternalAudioPlayer();
~ExternalAudioPlayer();
/// \param playerCommandLine_ Will be used in future play() calls.
void setPlayerCommandLine( QString const & playerCommandLine_ );
virtual QString play( const char * data, int size );
virtual void stop();
private slots:
void onViewerDestroyed( QObject * destroyedViewer );
private:
QString startViewer();
QString playerCommandLine;
ExternalViewer * exitingViewer; ///< If not null: points to the previous viewer,
///< the current viewer (if any) is not started yet
///< and waits for exitingViewer to be destroyed first.
struct ScopedPointerDeleteLater
{
static void cleanup( QObject * p )
{
if ( p )
p->deleteLater();
}
};
// deleteLater() is safer because viewer actively participates in the QEventLoop.
QScopedPointer< ExternalViewer, ScopedPointerDeleteLater > viewer;
};
#endif // EXTERNALAUDIOPLAYER_HH_INCLUDED