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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
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20
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21 // This code can be compiled for either PortAudio v18 or v19.
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22 // PortAudio v19 is the default. If you want to use v18, define
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23 // the preprocessor symbol HAVE_PORTAUDIO_v18.
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24
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25 #include <portaudio.h>
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26 #include <vector>
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27
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28 #include "AudioCallbackPlayTarget.h"
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29
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30 class AudioCallbackPlaySource;
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31
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32 class AudioPortAudioTarget : public AudioCallbackPlayTarget
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33 {
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34 Q_OBJECT
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35
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36 public:
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37 AudioPortAudioTarget(AudioCallbackPlaySource *source);
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38 virtual ~AudioPortAudioTarget();
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39
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40 virtual void shutdown();
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41
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42 virtual bool isOK() const;
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43
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44 virtual double getCurrentTime() const;
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45
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46 public slots:
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47 virtual void sourceModelReplaced();
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48
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49 protected:
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50 #ifdef HAVE_PORTAUDIO_V18
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51
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52 int process(void *input, void *output, unsigned long frames,
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53 PaTimestamp outTime);
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54
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55 static int processStatic(void *, void *, unsigned long,
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56 PaTimestamp, void *);
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57
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58 PortAudioStream *m_stream;
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59
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60 #else
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61
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62 int process(const void *input, void *output, unsigned long frames,
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63 const PaStreamCallbackTimeInfo *timeInfo,
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64 PaStreamCallbackFlags statusFlags);
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65
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66 static int processStatic(const void *, void *, unsigned long,
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67 const PaStreamCallbackTimeInfo *,
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68 PaStreamCallbackFlags, void *);
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69
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70 PaStream *m_stream;
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71
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72 #endif
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73
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74 int m_bufferSize;
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75 int m_sampleRate;
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76 int m_latency;
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77 bool m_done;
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78 };
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79
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80 #endif /* HAVE_PORTAUDIO */
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81
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82 #endif
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83
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