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1 /* -*- c-basic-offset: 4 -*- vi:set ts=8 sts=4 sw=4: */
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2
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3 /*
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4 A waveform viewer and audio annotation editor.
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5 Chris Cannam, Queen Mary University of London, 2005
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6
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7 This is experimental software. Not for distribution.
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8 */
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9
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10 #ifndef _SAMPLE_PLAYER_H_
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11 #define _SAMPLE_PLAYER_H_
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12
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13 #define DSSI_API_LEVEL 2
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14
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15 #include <ladspa.h>
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16 #include <dssi.h>
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17 #include <seq_event.h>
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18
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19 #include <QMutex>
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20 #include <QString>
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21 #include <vector>
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22
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23 class SamplePlayer
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24 {
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25 public:
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26 static const DSSI_Descriptor *getDescriptor(unsigned long index);
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27
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28 private:
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29 SamplePlayer(int sampleRate);
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30 ~SamplePlayer();
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31
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32 enum {
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33 OutputPort = 0,
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34 RetunePort = 1,
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35 BasePitchPort = 2,
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36 SustainPort = 3,
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37 ReleasePort = 4,
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38 PortCount = 5
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39 };
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40
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41 enum {
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42 Polyphony = 128
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43 };
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44
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45 static const char *const portNames[PortCount];
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46 static const LADSPA_PortDescriptor ports[PortCount];
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47 static const LADSPA_PortRangeHint hints[PortCount];
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48 static const LADSPA_Properties properties;
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49 static const LADSPA_Descriptor ladspaDescriptor;
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50 static const DSSI_Descriptor dssiDescriptor;
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51 static const DSSI_Host_Descriptor *hostDescriptor;
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52
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53 static LADSPA_Handle instantiate(const LADSPA_Descriptor *, unsigned long);
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54 static void connectPort(LADSPA_Handle, unsigned long, LADSPA_Data *);
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55 static void activate(LADSPA_Handle);
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56 static void run(LADSPA_Handle, unsigned long);
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57 static void deactivate(LADSPA_Handle);
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58 static void cleanup(LADSPA_Handle);
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59 static const DSSI_Program_Descriptor *getProgram(LADSPA_Handle, unsigned long);
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60 static void selectProgram(LADSPA_Handle, unsigned long, unsigned long);
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61 static int getMidiController(LADSPA_Handle, unsigned long);
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62 static void runSynth(LADSPA_Handle, unsigned long,
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63 snd_seq_event_t *, unsigned long);
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64 static void receiveHostDescriptor(const DSSI_Host_Descriptor *descriptor);
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65 static void workThreadCallback(LADSPA_Handle);
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66
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67 void searchSamples();
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68 void loadSampleData(QString path);
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69 void runImpl(unsigned long, snd_seq_event_t *, unsigned long);
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70 void addSample(int, unsigned long, unsigned long);
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71
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72 float *m_output;
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73 float *m_retune;
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74 float *m_basePitch;
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75 float *m_sustain;
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76 float *m_release;
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77
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78 float *m_sampleData;
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79 size_t m_sampleCount;
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80 int m_sampleRate;
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81
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82 long m_ons[Polyphony];
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83 long m_offs[Polyphony];
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84 int m_velocities[Polyphony];
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85 long m_sampleNo;
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86
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87 QString m_program;
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88 std::vector<std::pair<QString, QString> > m_samples; // program name, path
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89 bool m_sampleSearchComplete;
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90 int m_pendingProgramChange;
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91
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92 QMutex m_mutex;
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93 };
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94
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95
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96 #endif
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