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1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
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2
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3 /*
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4 Sonic Visualiser
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5 An audio file viewer and annotation editor.
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6 Centre for Digital Music, Queen Mary, University of London.
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7 This file copyright 2006 Chris Cannam.
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8
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9 This program is free software; you can redistribute it and/or
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10 modify it under the terms of the GNU General Public License as
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11 published by the Free Software Foundation; either version 2 of the
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12 License, or (at your option) any later version. See the file
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13 COPYING included with this distribution for more information.
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14 */
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15
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16 #ifndef _AUDIO_PORT_AUDIO_TARGET_H_
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17 #define _AUDIO_PORT_AUDIO_TARGET_H_
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18
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19 #ifdef HAVE_PORTAUDIO_2_0
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20
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21 // This code requires PortAudio v19 -- it won't work with v18.
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22
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23 #include <portaudio.h>
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24
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25 #include <QObject>
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26
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27 #include "AudioCallbackPlayTarget.h"
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28
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29 class AudioCallbackPlaySource;
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30
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31 class AudioPortAudioTarget : public AudioCallbackPlayTarget
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32 {
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33 Q_OBJECT
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34
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35 public:
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36 AudioPortAudioTarget(AudioCallbackPlaySource *source);
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37 virtual ~AudioPortAudioTarget();
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38
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39 virtual void shutdown();
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40
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41 virtual bool isOK() const;
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42
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43 virtual double getCurrentTime() const;
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44
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45 public slots:
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46 virtual void sourceModelReplaced();
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47
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48 protected:
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49 int process(const void *input, void *output, unsigned long frames,
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50 const PaStreamCallbackTimeInfo *timeInfo,
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51 PaStreamCallbackFlags statusFlags);
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52
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53 static int processStatic(const void *, void *, unsigned long,
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54 const PaStreamCallbackTimeInfo *,
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55 PaStreamCallbackFlags, void *);
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56
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57 PaStream *m_stream;
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58
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59 int m_bufferSize;
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60 int m_sampleRate;
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61 int m_latency;
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62 bool m_done;
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63 };
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64
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65 #endif /* HAVE_PORTAUDIO */
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66
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67 #endif
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68
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