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// -*- c-indentation-style:"stroustrup" c-basic-offset: 4 -*-
/*
Rosegarden
A sequencer and musical notation editor.
This program is Copyright 2000-2008
Guillaume Laurent <[email protected]>,
Chris Cannam <[email protected]>,
Richard Bown <[email protected]>
The moral right of the authors to claim authorship of this work
has been asserted.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version. See the file
COPYING included with this distribution for more information.
*/
#include "Midi.h"
#include "MidiEvent.h"
#include <iostream>
// MidiEvent is a representation of MIDI which we use
// for the import/export of MidiFiles. It uses std::strings for
// meta event messages which makes them nice and easy to handle.
//
//
namespace Rosegarden
{
using std::string;
using std::cout;
using std::endl;
MidiEvent::MidiEvent()
{}
MidiEvent::MidiEvent(timeT deltaTime,
MidiByte eventCode):
m_deltaTime(deltaTime),
m_duration(0),
m_eventCode(eventCode),
m_data1(0),
m_data2(0),
m_metaEventCode(0),
m_metaMessage("")
{}
MidiEvent::MidiEvent(timeT deltaTime,
MidiByte eventCode,
MidiByte data1):
m_deltaTime(deltaTime),
m_duration(0),
m_eventCode(eventCode),
m_data1(data1),
m_data2(0),
m_metaEventCode(0),
m_metaMessage("")
{}
MidiEvent::MidiEvent(timeT deltaTime,
MidiByte eventCode,
MidiByte data1,
MidiByte data2):
m_deltaTime(deltaTime),
m_duration(0),
m_eventCode(eventCode),
m_data1(data1),
m_data2(data2),
m_metaEventCode(0),
m_metaMessage("")
{}
MidiEvent::MidiEvent(timeT deltaTime,
MidiByte eventCode,
MidiByte metaEventCode,
const string &metaMessage):
m_deltaTime(deltaTime),
m_duration(0),
m_eventCode(eventCode),
m_data1(0),
m_data2(0),
m_metaEventCode(metaEventCode),
m_metaMessage(metaMessage)
{}
MidiEvent::MidiEvent(timeT deltaTime,
MidiByte eventCode,
const string &sysEx):
m_deltaTime(deltaTime),
m_duration(0),
m_eventCode(eventCode),
m_data1(0),
m_data2(0),
m_metaEventCode(0),
m_metaMessage(sysEx)
{}
MidiEvent::~MidiEvent()
{}
// Show a representation of our MidiEvent purely for information
// purposes (also demos how we decode them)
//
//
void
MidiEvent::print()
{
timeT tempo;
int tonality;
string sharpflat;
if (m_metaEventCode) {
switch (m_metaEventCode) {
case MIDI_SEQUENCE_NUMBER:
cout << "MIDI SEQUENCE NUMBER" << endl;
break;
case MIDI_TEXT_EVENT:
cout << "MIDI TEXT:\t\"" << m_metaMessage << "\"" << endl;
break;
case MIDI_COPYRIGHT_NOTICE:
cout << "COPYRIGHT:\t\"" << m_metaMessage << "\"" << endl;
case MIDI_TRACK_NAME:
cout << "TRACK NAME:\t\"" << m_metaMessage << "\"" << endl;
break;
case MIDI_INSTRUMENT_NAME:
cout << "INSTRUMENT NAME:\t\"" << m_metaMessage << "\"" << endl;
break;
case MIDI_LYRIC:
cout << "LYRIC:\t\"" << m_metaMessage << "\"" << endl;
break;
case MIDI_TEXT_MARKER:
cout << "MARKER:\t\"" << m_metaMessage << "\"" << endl;
break;
case MIDI_CUE_POINT:
cout << "CUE POINT:\t\"" << m_metaMessage << "\"" << endl;
break;
// Sets a Channel number for a TRACK before it starts
case MIDI_CHANNEL_PREFIX:
cout << "CHANNEL PREFIX:\t"
<< (timeT)m_metaMessage[0]
<< endl;
break;
// These are actually the same case but this is not an
// official META event - it just crops up a lot. We
// assume it's a MIDI_CHANNEL_PREFIX though
//
case MIDI_CHANNEL_PREFIX_OR_PORT:
cout << "FIXED CHANNEL PREFIX:\t"
<< (timeT)m_metaMessage[0] << endl;
break;
case MIDI_END_OF_TRACK:
cout << "END OF TRACK" << endl;
break;
case MIDI_SET_TEMPO:
tempo =
((timeT)(((MidiByte)m_metaMessage[0]) << 16)) +
((timeT)(((MidiByte)m_metaMessage[1]) << 8)) +
(short)(MidiByte)m_metaMessage[2];
tempo = 60000000 / tempo;
cout << "SET TEMPO:\t" << tempo << endl;
break;
case MIDI_SMPTE_OFFSET:
cout << "SMPTE TIME CODE:\t"
<< (timeT)m_metaMessage[0]
<< ":" << (timeT)m_metaMessage[1]
<< ":" << (timeT)m_metaMessage[2]
<< " - fps = " << (timeT)m_metaMessage[3]
<< " - subdivsperframe = "
<< (timeT)m_metaMessage[4]
<< endl;
break;
case MIDI_TIME_SIGNATURE:
cout << "TIME SIGNATURE:\t"
<< (timeT)m_metaMessage[0]
<< "/"
<< (1 << (timeT)m_metaMessage[1]) << endl;
break;
case MIDI_KEY_SIGNATURE:
tonality = (int)m_metaMessage[0];
if (tonality < 0) {
sharpflat = -tonality + " flat";
} else {
sharpflat = tonality;
sharpflat += " sharp";
}
cout << "KEY SIGNATURE:\t" << sharpflat << " "
<< (((int)m_metaMessage[1]) == 0 ? "major" : "minor")
<< endl;
break;
case MIDI_SEQUENCER_SPECIFIC:
cout << "SEQUENCER SPECIFIC:\t\"" << m_metaMessage << endl;
break;
default:
cout << "Undefined MIDI META event - "
<< (timeT)m_metaEventCode << endl;
break;
}
} else {
switch (m_eventCode & MIDI_MESSAGE_TYPE_MASK) {
case MIDI_NOTE_ON:
cout << "NOTE ON:\t" << (int)m_data1 << " - "
<< (int)m_data2 << endl;
break;
case MIDI_NOTE_OFF:
cout << "NOTE OFF:\t" << (int)m_data1 << " - "
<< (int)m_data2 << endl;
break;
case MIDI_POLY_AFTERTOUCH:
cout << "POLY AFTERTOUCH:\t" << (int)m_data1
<< " - " << (int)m_data2 << endl;
break;
case MIDI_CTRL_CHANGE:
cout << "CTRL CHANGE:\t" << (int)m_data1
<< " - " << (int)m_data2 << endl;
break;
case MIDI_PITCH_BEND:
cout << "PITCH BEND:\t" << (int)m_data1
<< " - " << (int)m_data2 << endl;
break;
case MIDI_PROG_CHANGE:
cout << "PROG CHANGE:\t" << (int)m_data1 << endl;
break;
case MIDI_CHNL_AFTERTOUCH:
cout << "CHNL AFTERTOUCH\t" << (int)m_data1 << endl;
break;
default:
cout << "Undefined MIDI event" << endl;
break;
}
}
return ;
}
// Adds the argument to _deltaTime and returns the result
// thus aggregating the times as we go aint
timeT
MidiEvent::addTime(const timeT &time)
{
m_deltaTime += time;
return m_deltaTime;
}
// Compare based on time
//
bool
operator<(const MidiEvent &a, const MidiEvent &b)
{
return a.getTime() < b.getTime();
}
}
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