annotate data/midi/MIDIInput.cpp @ 1886:f803d3c33f76 tip

Switch off copious debug in soft synth driving
author Chris Cannam
date Fri, 14 Aug 2020 10:44:44 +0100
parents 157c62ff0056
children
rev   line source
Chris@562 1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
Chris@562 2
Chris@562 3 /*
Chris@562 4 Sonic Visualiser
Chris@562 5 An audio file viewer and annotation editor.
Chris@562 6 Centre for Digital Music, Queen Mary, University of London.
Chris@562 7 This file copyright 2006-2009 Chris Cannam and QMUL.
Chris@562 8
Chris@562 9 This program is free software; you can redistribute it and/or
Chris@562 10 modify it under the terms of the GNU General Public License as
Chris@562 11 published by the Free Software Foundation; either version 2 of the
Chris@562 12 License, or (at your option) any later version. See the file
Chris@562 13 COPYING included with this distribution for more information.
Chris@562 14 */
Chris@562 15
Chris@562 16 #include "MIDIInput.h"
Chris@562 17
Chris@562 18 #include "rtmidi/RtMidi.h"
Chris@562 19
Chris@1219 20 #include "system/System.h"
Chris@608 21
Chris@567 22 MIDIInput::MIDIInput(QString name, FrameTimer *timer) :
Chris@1582 23 m_rtmidi(nullptr),
Chris@567 24 m_frameTimer(timer),
Chris@562 25 m_buffer(1023)
Chris@562 26 {
Chris@562 27 try {
Chris@1397 28 std::vector<RtMidi::Api> apis;
Chris@1397 29 RtMidi::getCompiledApi(apis);
Chris@1400 30 RtMidi::Api preferredApi = RtMidi::UNSPECIFIED;
Chris@1400 31 for (auto a: apis) {
Chris@1400 32 if (a == RtMidi::UNSPECIFIED || a == RtMidi::RTMIDI_DUMMY) {
Chris@1400 33 continue;
Chris@1400 34 }
Chris@1400 35 preferredApi = a;
Chris@1400 36 break;
Chris@1400 37 }
Chris@1400 38 if (preferredApi == RtMidi::UNSPECIFIED) {
Chris@1400 39 SVCERR << "ERROR: MIDIInput: No RtMidi APIs compiled in" << endl;
Chris@1397 40 } else {
Chris@1400 41
Chris@1400 42 m_rtmidi = new RtMidiIn(preferredApi, name.toStdString());
Chris@1400 43
Chris@1400 44 int n = m_rtmidi->getPortCount();
Chris@1400 45
Chris@1400 46 if (n == 0) {
Chris@1400 47
Chris@1400 48 SVDEBUG << "NOTE: MIDIInput: No input ports available" << endl;
Chris@1400 49 delete m_rtmidi;
Chris@1582 50 m_rtmidi = nullptr;
Chris@1400 51
Chris@1400 52 } else {
Chris@1400 53
Chris@1400 54 m_rtmidi->setCallback(staticCallback, this);
Chris@1400 55
Chris@1400 56 SVDEBUG << "MIDIInput: Available ports are:" << endl;
Chris@1400 57 for (int i = 0; i < n; ++i) {
Chris@1400 58 SVDEBUG << i << ". " << m_rtmidi->getPortName(i) << endl;
Chris@1400 59 }
Chris@1400 60 SVDEBUG << "MIDIInput: Using first port (\""
Chris@1400 61 << m_rtmidi->getPortName(0) << "\")" << endl;
Chris@1400 62
Chris@1400 63 m_rtmidi->openPort(0, tr("Input").toStdString());
Chris@1400 64 }
Chris@1397 65 }
Chris@1400 66
Chris@1465 67 } catch (const RtMidiError &e) {
Chris@1400 68 SVCERR << "ERROR: RtMidi error: " << e.getMessage() << endl;
Chris@562 69 delete m_rtmidi;
Chris@1582 70 m_rtmidi = nullptr;
Chris@562 71 }
Chris@562 72 }
Chris@562 73
Chris@562 74 MIDIInput::~MIDIInput()
Chris@562 75 {
Chris@562 76 delete m_rtmidi;
Chris@562 77 }
Chris@562 78
Chris@562 79 void
Chris@562 80 MIDIInput::staticCallback(double timestamp, std::vector<unsigned char> *message,
Chris@562 81 void *userData)
Chris@562 82 {
Chris@562 83 ((MIDIInput *)userData)->callback(timestamp, message);
Chris@562 84 }
Chris@562 85
Chris@562 86 void
Chris@562 87 MIDIInput::callback(double timestamp, std::vector<unsigned char> *message)
Chris@562 88 {
Chris@690 89 SVDEBUG << "MIDIInput::callback(" << timestamp << ")" << endl;
Chris@567 90 // In my experience so far, the timings passed to this function
Chris@567 91 // are not reliable enough to use. We request instead an audio
Chris@567 92 // frame time from whatever FrameTimer we have been given, and use
Chris@567 93 // that as the event time.
Chris@566 94 if (!message || message->empty()) return;
Chris@567 95 unsigned long t = m_frameTimer->getFrame();
Chris@569 96 MIDIByte code = (*message)[0];
Chris@567 97 MIDIEvent ev(t,
Chris@569 98 code,
Chris@566 99 message->size() > 1 ? (*message)[1] : 0,
Chris@566 100 message->size() > 2 ? (*message)[2] : 0);
Chris@566 101 postEvent(ev);
Chris@562 102 }
Chris@562 103
Chris@562 104 MIDIEvent
Chris@562 105 MIDIInput::readEvent()
Chris@562 106 {
Chris@562 107 MIDIEvent *event = m_buffer.readOne();
Chris@562 108 MIDIEvent revent = *event;
Chris@562 109 delete event;
Chris@562 110 return revent;
Chris@562 111 }
Chris@562 112
Chris@562 113 void
Chris@562 114 MIDIInput::postEvent(MIDIEvent e)
Chris@562 115 {
Chris@562 116 int count = 0, max = 5;
Chris@562 117 while (m_buffer.getWriteSpace() == 0) {
Chris@562 118 if (count == max) {
Chris@1400 119 SVCERR << "ERROR: MIDIInput::postEvent: MIDI event queue is full and not clearing -- abandoning incoming event" << endl;
Chris@562 120 return;
Chris@562 121 }
Chris@1724 122 SVCERR << "WARNING: MIDIInput::postEvent: MIDI event queue (capacity " << m_buffer.getSize() << ") is full!" << endl;
Chris@690 123 SVDEBUG << "Waiting for something to be processed" << endl;
Chris@562 124 #ifdef _WIN32
Chris@562 125 Sleep(1);
Chris@562 126 #else
Chris@562 127 sleep(1);
Chris@562 128 #endif
Chris@562 129 count++;
Chris@562 130 }
Chris@562 131
Chris@562 132 MIDIEvent *me = new MIDIEvent(e);
Chris@562 133 m_buffer.write(&me, 1);
Chris@562 134 emit eventsAvailable();
Chris@562 135 }
Chris@562 136