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/*
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Rosegarden
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A MIDI and audio sequencer and musical notation editor.
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This program is Copyright 2000-2008
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Guillaume Laurent <glaurent@telegraph-road.org>,
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Chris Cannam <cannam@all-day-breakfast.com>,
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Richard Bown <richard.bown@ferventsoftware.com>
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The moral rights of Guillaume Laurent, Chris Cannam, and Richard
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Bown to claim authorship of this work have been asserted.
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Other copyrights also apply to some parts of this work. Please
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see the AUTHORS file and individual file headers for details.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version. See the file
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COPYING included with this distribution for more information.
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*/
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#ifndef _AUDIO_FILE_TIME_STRETCHER_H_
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#define _AUDIO_FILE_TIME_STRETCHER_H_
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#include <tqobject.h>
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#include "AudioFile.h"
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#include "base/Exception.h"
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namespace Rosegarden {
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class AudioFileManager;
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class AudioFileTimeStretcher : public TQObject
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{
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TQ_OBJECT
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public:
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AudioFileTimeStretcher(AudioFileManager *mgr);
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virtual ~AudioFileTimeStretcher();
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/**
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* Stretch an audio file and return the ID of the stretched
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* version. May throw SoundFile::BadSoundFileException,
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* AudioFileManager::BadAudioPathException, CancelledException
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*/
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AudioFileId getStretchedAudioFile(AudioFileId source,
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float ratio);
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class CancelledException : public Exception
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{
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public:
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CancelledException() : Exception("Cancelled") { }
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~CancelledException() throw() { }
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};
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signals:
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void setProgress(int);
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public slots:
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/**
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* Cancel an ongoing getStretchedAudioFile
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*/
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void slotStopTimestretch();
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protected:
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AudioFileManager *m_manager;
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bool m_timestretchCancelled;
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};
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}
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#endif
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