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1 #pragma once
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2
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3 /**
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4 * Enumeration of all the possible commands exchanged between audio thread and graphic thread.
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5 *
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6 */
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7 enum class Command {
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8 // message carrying info about one chunk of recorder audio.
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9 WAVE_CHUNK,
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10 // message sent when a new recording starts. The gui resets the wave upon receiving it.
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11 WAVE_START,
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12
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13 TRIGGER_UPDATE,
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14 TRIGGER_END,
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15
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16 NOTE_ON,
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17 NOTE_OFF,
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18
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19 LOOP_ON,
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20 LOOP_OFF
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21 };
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22
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23 /** Message sent from the audio thread to the graphic wave when a new wave is recorded.
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24 *
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25 * The graphic thread set the chunks of the wave to reflect the level of the recorded audio.
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26 * The algorithm takes the maximum and minimum value of a group of samples and this becomes the top and bottom of the samples.
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27 * It contains the inde
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28 * the cursor position when the grains are reset.
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29 */
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30 struct RecordWaveMsg
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31 {
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32 Command cmd; // WAVE_CHUNK or WAVE_START
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33 std::size_t index;
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34 float arg1;
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35 float arg2;
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36 };
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37
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38 /**
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39 * Utility function to create a new RecordWaveMsg.
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40 */
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41 inline RecordWaveMsg makeRecordWaveMsg( Command cmd, std::size_t index, float arg1, float arg2 )
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42 {
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43 RecordWaveMsg msg;
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44 msg.cmd = cmd;
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45 msg.index = index;
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46 msg.arg1 = arg1;
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47 msg.arg2 = arg2;
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48
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49 return msg;
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50 }
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51
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52 /**
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53 * Message sent from the audio thread to the graphic thread when a new grain is triggered in the granular synthesizer.
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54 * This creates a new cursor that travels from the beginning to the end of the selection to graphically represent the evolution of the grain in time.
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55 *
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56 */
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57 struct CursorTriggerMsg
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58 {
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59 Command cmd; // TRIGGER_UPDATE or TRIGGER_END
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60 int synthID;
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61 };
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62
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63 /**
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64 * Utility function to create a new CursorTriggerMsg.
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65 */
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66 inline CursorTriggerMsg makeCursorTriggerMsg( Command cmd, std::uint8_t synthID )
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67 {
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68 CursorTriggerMsg msg;
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69
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70 msg.cmd = cmd;
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71 msg.synthID = synthID;
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72
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73 return msg;
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74 }
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75
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76 /**
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77 * Message sent from the graphic (main) thread to the audio thread to start a new voice of the granular synthesizer.
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78 */
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79 struct NoteMsg
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80 {
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81 Command cmd; // NOTE_ON/OFF ot LOOP_ON/OFF
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82 int midiNote;
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83 double rate;
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84 };
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85
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86 /**
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87 * Utility function to create a new NoteMsg.
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88 */
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89 inline NoteMsg makeNoteMsg( Command cmd, int midiNote, double rate )
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90 {
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91 NoteMsg msg;
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92
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93 msg.cmd = cmd;
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94 msg.midiNote = midiNote;
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95 msg.rate = rate;
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96
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97 return msg;
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98 }
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