Mercurial > hg > sonic-visualiser
view audioio/AudioCallbackPlayTarget.h @ 25:e74f508db18c
* Add setRatio method to the time stretcher, and make it possible to change
the ratio without having to construct and replace the time stretcher. This
means we can do it seamlessly. Add a lot more ratios to the
time stretch control in the main window
author | Chris Cannam |
---|---|
date | Fri, 15 Sep 2006 15:35:06 +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