Mercurial > hg > sonic-visualiser
view audioio/AudioCallbackPlayTarget.h @ 153:d2cc3b10e26f
* a bit more work on measurement tool mode
* use arrow cursors on thumbwheels and panner in pane HUD
author | Chris Cannam |
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date | Thu, 14 Jun 2007 15:20:49 +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