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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 _SAMPLE_PLAYER_H_
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17 #define _SAMPLE_PLAYER_H_
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18
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19 #define DSSI_API_LEVEL 2
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20
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21 #include "../api/ladspa.h"
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22 #include "../api/dssi.h"
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23
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24 #include <seq_event.h>
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25
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26 #include <QMutex>
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27 #include <QString>
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28 #include <vector>
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29
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30 class SamplePlayer
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31 {
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32 public:
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33 static const DSSI_Descriptor *getDescriptor(unsigned long index);
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34
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35 private:
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36 SamplePlayer(int sampleRate);
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37 ~SamplePlayer();
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38
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39 enum {
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40 OutputPort = 0,
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41 RetunePort = 1,
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42 BasePitchPort = 2,
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43 ConcertAPort = 3,
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44 SustainPort = 4,
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45 ReleasePort = 5,
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46 PortCount = 6
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47 };
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48
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49 enum {
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50 Polyphony = 128
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51 };
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52
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53 static const char *const portNames[PortCount];
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54 static const LADSPA_PortDescriptor ports[PortCount];
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55 static const LADSPA_PortRangeHint hints[PortCount];
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56 static const LADSPA_Properties properties;
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57 static const LADSPA_Descriptor ladspaDescriptor;
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58 static const DSSI_Descriptor dssiDescriptor;
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59 static const DSSI_Host_Descriptor *hostDescriptor;
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60
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61 static LADSPA_Handle instantiate(const LADSPA_Descriptor *, unsigned long);
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62 static void connectPort(LADSPA_Handle, unsigned long, LADSPA_Data *);
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63 static void activate(LADSPA_Handle);
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64 static void run(LADSPA_Handle, unsigned long);
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65 static void deactivate(LADSPA_Handle);
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66 static void cleanup(LADSPA_Handle);
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67 static char *configure(LADSPA_Handle, const char *, const char *);
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68 static const DSSI_Program_Descriptor *getProgram(LADSPA_Handle, unsigned long);
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69 static void selectProgram(LADSPA_Handle, unsigned long, unsigned long);
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70 static int getMidiController(LADSPA_Handle, unsigned long);
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71 static void runSynth(LADSPA_Handle, unsigned long,
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72 snd_seq_event_t *, unsigned long);
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73 static void receiveHostDescriptor(const DSSI_Host_Descriptor *descriptor);
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74 static void workThreadCallback(LADSPA_Handle);
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75
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76 void searchSamples();
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77 void loadSampleData(QString path);
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78 void runImpl(unsigned long, snd_seq_event_t *, unsigned long);
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79 void addSample(int, unsigned long, unsigned long);
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80
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81 float *m_output;
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82 float *m_retune;
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83 float *m_basePitch;
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84 float *m_concertA;
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85 float *m_sustain;
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86 float *m_release;
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87
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88 float *m_sampleData;
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89 size_t m_sampleCount;
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90 int m_sampleRate;
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91
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92 long m_ons[Polyphony];
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93 long m_offs[Polyphony];
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94 int m_velocities[Polyphony];
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95 long m_sampleNo;
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96
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97 QString m_sampleDir;
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98 QString m_program;
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99 std::vector<std::pair<QString, QString> > m_samples; // program name, path
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100 bool m_sampleSearchComplete;
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101 int m_pendingProgramChange;
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102
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103 QMutex m_mutex;
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104 };
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105
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106
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107 #endif
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