Mercurial > hg > sonic-visualiser
view audioio/AudioCallbackPlayTarget.h @ 197:c08c312b2399
* Make RemoteFile far more pervasive, and use it for local files as well
so that we can handle both transparently. Make it shallow copy with
reference counting, so it can be used by value without having to worry
about the cache file lifetime. Use RemoteFile for MainWindow file-open
functions, etc
author | Chris Cannam |
---|---|
date | Thu, 18 Oct 2007 15:31:20 +0000 |
parents | cd5d7ff8ef38 |
children |
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ /* Sonic Visualiser An audio file viewer and annotation editor. Centre for Digital Music, Queen Mary, University of London. This file copyright 2006 Chris Cannam. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. See the file COPYING included with this distribution for more information. */ #ifndef _AUDIO_CALLBACK_PLAY_TARGET_H_ #define _AUDIO_CALLBACK_PLAY_TARGET_H_ #include <QObject> class AudioCallbackPlaySource; class AudioCallbackPlayTarget : public QObject { Q_OBJECT public: AudioCallbackPlayTarget(AudioCallbackPlaySource *source); virtual ~AudioCallbackPlayTarget(); virtual bool isOK() const = 0; float getOutputGain() const { return m_outputGain; } public slots: /** * Set the playback gain (0.0 = silence, 1.0 = levels unmodified) */ virtual void setOutputGain(float gain); /** * The main source model (providing the playback sample rate) has * been changed. The target should query the source's sample * rate, set its output sample rate accordingly, and call back on * the source's setTargetSampleRate to indicate what sample rate * it succeeded in setting at the output. If this differs from * the model rate, the source will resample. */ virtual void sourceModelReplaced() = 0; protected: AudioCallbackPlaySource *m_source; float m_outputGain; }; #endif