Mercurial > hg > sonic-visualiser
annotate audioio/AudioCallbackPlayTarget.h @ 116:99d65ba33c88
* More useful status bar text -- show the current play time and the extents of
the visible area
* Add update-i18n.sh to update the i18n/ts and qm files -- I can't get qmake
to do the right thing now that the project file has been split up into
several project files
* Fix missing Q_OBJECTs, etc, reported by lupdate
* Update Russian translation from AlexandrE
| author | Chris Cannam |
|---|---|
| date | Wed, 07 Mar 2007 17:07:02 +0000 |
| parents | cd5d7ff8ef38 |
| children |
| rev | line source |
|---|---|
| Chris@0 | 1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ |
| Chris@0 | 2 |
| Chris@0 | 3 /* |
| Chris@0 | 4 Sonic Visualiser |
| Chris@0 | 5 An audio file viewer and annotation editor. |
| Chris@0 | 6 Centre for Digital Music, Queen Mary, University of London. |
| Chris@0 | 7 This file copyright 2006 Chris Cannam. |
| Chris@0 | 8 |
| Chris@0 | 9 This program is free software; you can redistribute it and/or |
| Chris@0 | 10 modify it under the terms of the GNU General Public License as |
| Chris@0 | 11 published by the Free Software Foundation; either version 2 of the |
| Chris@0 | 12 License, or (at your option) any later version. See the file |
| Chris@0 | 13 COPYING included with this distribution for more information. |
| Chris@0 | 14 */ |
| Chris@0 | 15 |
| Chris@0 | 16 #ifndef _AUDIO_CALLBACK_PLAY_TARGET_H_ |
| Chris@0 | 17 #define _AUDIO_CALLBACK_PLAY_TARGET_H_ |
| Chris@0 | 18 |
| Chris@0 | 19 #include <QObject> |
| Chris@0 | 20 |
| Chris@0 | 21 class AudioCallbackPlaySource; |
| Chris@0 | 22 |
| Chris@0 | 23 class AudioCallbackPlayTarget : public QObject |
| Chris@0 | 24 { |
| Chris@0 | 25 Q_OBJECT |
| Chris@0 | 26 |
| Chris@0 | 27 public: |
| Chris@0 | 28 AudioCallbackPlayTarget(AudioCallbackPlaySource *source); |
| Chris@0 | 29 virtual ~AudioCallbackPlayTarget(); |
| Chris@0 | 30 |
| Chris@0 | 31 virtual bool isOK() const = 0; |
| Chris@0 | 32 |
| Chris@0 | 33 float getOutputGain() const { |
| Chris@0 | 34 return m_outputGain; |
| Chris@0 | 35 } |
| Chris@0 | 36 |
| Chris@0 | 37 public slots: |
| Chris@0 | 38 /** |
| Chris@0 | 39 * Set the playback gain (0.0 = silence, 1.0 = levels unmodified) |
| Chris@0 | 40 */ |
| Chris@0 | 41 virtual void setOutputGain(float gain); |
| Chris@0 | 42 |
| Chris@0 | 43 /** |
| Chris@0 | 44 * The main source model (providing the playback sample rate) has |
| Chris@0 | 45 * been changed. The target should query the source's sample |
| Chris@0 | 46 * rate, set its output sample rate accordingly, and call back on |
| Chris@0 | 47 * the source's setTargetSampleRate to indicate what sample rate |
| Chris@0 | 48 * it succeeded in setting at the output. If this differs from |
| Chris@0 | 49 * the model rate, the source will resample. |
| Chris@0 | 50 */ |
| Chris@0 | 51 virtual void sourceModelReplaced() = 0; |
| Chris@0 | 52 |
| Chris@0 | 53 protected: |
| Chris@0 | 54 AudioCallbackPlaySource *m_source; |
| Chris@0 | 55 float m_outputGain; |
| Chris@0 | 56 }; |
| Chris@0 | 57 |
| Chris@0 | 58 #endif |
| Chris@0 | 59 |