diff hackday/CannamMidiFileLoader.cpp @ 24:5a11b19906c7

hackday code is added.

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hackday/CannamMidiFileLoader.cpp	Sat Dec 03 17:19:43 2011 +0000
@@ -0,0 +1,301 @@
+/*
+ *  CannamMidiFileLoader.cpp
+ *  midi-score-follower
+ *
+ *  Created by Andrew on 19/08/2011.
+ *  Copyright 2011 QMUL. All rights reserved.
+ *
+ */
+
+#include "MIDIFileReader.h"
+#include "CannamMidiFileLoader.h"
+
+CannamMidiFileLoader::CannamMidiFileLoader(){
+	chopBeginning = true;
+}
+
+int CannamMidiFileLoader::loadFile(std::string& filename, midiEventHolder& myMidiEvents){
+		
+		noteOnIndex = 0;
+		myMidiEvents.clearAllEvents();
+		
+		setTempoFromMidiValue(500000, myMidiEvents);//default is 120bpm
+		myMidiEvents.pulsesPerQuarternote = 240;//default
+	
+		//int main(int argc, char **argv)
+		//{
+		//	if (argc != 2) {
+		//		cerr << "Usage: midifile <file.mid>" << endl;
+		//		return 1;
+		//	}
+		
+	//	std::string filename = midiFileName;//argv[1];
+		
+		MIDIFileReader fr(filename);
+	
+		if (!fr.isOK()) {
+			std::cerr << "Error: " << fr.getError().c_str() << std::endl;
+			return 1;
+		}
+		
+		MIDIComposition c = fr.load();
+		
+		switch (fr.getFormat()) {
+			case MIDI_SINGLE_TRACK_FILE: cout << "Format: MIDI Single Track File" << endl; break;
+			case MIDI_SIMULTANEOUS_TRACK_FILE: cout << "Format: MIDI Simultaneous Track File" << endl; break;
+			case MIDI_SEQUENTIAL_TRACK_FILE: cout << "Format: MIDI Sequential Track File" << endl; break;
+			default: cout << "Format: Unknown MIDI file format?" << endl; break;
+		}
+		
+		cout << "Tracks: " << c.size() << endl;
+		
+		int td = fr.getTimingDivision();
+		if (td < 32768) {
+				if (printMidiInfo)
+					cout << "Timing division: " << fr.getTimingDivision() << " ppq" << endl;
+			myMidiEvents.pulsesPerQuarternote = fr.getTimingDivision();
+		} else {
+			int frames = 256 - (td >> 8);
+			int subframes = td & 0xff;
+				if (printMidiInfo)
+					cout << "SMPTE timing: " << frames << " fps, " << subframes << " subframes" << endl;
+		}
+		
+		for (MIDIComposition::const_iterator i = c.begin(); i != c.end(); ++i) {
+				if (printMidiInfo)
+					cout << "Start of track: " << i->first+1 << endl;
+			
+			for (MIDITrack::const_iterator j = i->second.begin(); j != i->second.end(); ++j) {
+				
+				unsigned int t = j->getTime();
+				int ch = j->getChannelNumber();
+				
+				if (j->isMeta()) {
+					int code = j->getMetaEventCode();
+					string name;
+					bool printable = true;
+					switch (code) {
+							
+						case MIDI_END_OF_TRACK:
+							cout << t << ": End of track" << endl;
+							break;
+							
+						case MIDI_TEXT_EVENT: name = "Text"; break;
+						case MIDI_COPYRIGHT_NOTICE: name = "Copyright"; break;
+						case MIDI_TRACK_NAME: name = "Track name"; break;
+						case MIDI_INSTRUMENT_NAME: name = "Instrument name"; break;
+						case MIDI_LYRIC: name = "Lyric"; break;
+						case MIDI_TEXT_MARKER: name = "Text marker"; break;
+						case MIDI_SEQUENCE_NUMBER: name = "Sequence number"; printable = false; break;
+						case MIDI_CHANNEL_PREFIX_OR_PORT: name = "Channel prefix or port"; printable = false; break;
+						case MIDI_CUE_POINT: name = "Cue point"; break;
+						case MIDI_CHANNEL_PREFIX: name = "Channel prefix"; printable = false; break;
+						case MIDI_SEQUENCER_SPECIFIC: name = "Sequencer specific"; printable = false; break;
+						case MIDI_SMPTE_OFFSET: name = "SMPTE offset"; printable = false; break;
+							
+						case MIDI_SET_TEMPO:
+						{
+							int m0 = j->getMetaMessage()[0];
+							int m1 = j->getMetaMessage()[1];
+							int m2 = j->getMetaMessage()[2];
+							long tempo = (((m0 << 8) + m1) << 8) + m2;
+								if (printMidiInfo)
+								cout << t << ": Tempo: " << 60000000.0 / double(tempo) << endl;
+							setTempoFromMidiValue(tempo, myMidiEvents);
+							
+							
+							printf("period double is %f\n", myMidiEvents.period);
+						}
+							break;
+							
+						case MIDI_TIME_SIGNATURE:
+						{
+							int numerator = j->getMetaMessage()[0];
+							int denominator = 1 << (int)j->getMetaMessage()[1];
+							if (printMidiInfo)
+							cout << t << ": Time signature: " << numerator << "/" << denominator << endl;
+						}
+							
+						case MIDI_KEY_SIGNATURE:
+						{
+							int accidentals = j->getMetaMessage()[0];
+							int isMinor = j->getMetaMessage()[1];
+							bool isSharp = accidentals < 0 ? false : true;
+							accidentals = accidentals < 0 ? -accidentals : accidentals;
+							if (printMidiInfo)
+								cout << t << ": Key signature: " << accidentals << " "
+								<< (isSharp ?
+								(accidentals > 1 ? "sharps" : "sharp") :
+								(accidentals > 1 ? "flats" : "flat"))
+								<< (isMinor ? ", minor" : ", major") << endl;
+						}
+							
+					}
+					
+					
+					if (name != "") {
+						if (printable) {
+							cout << t << ": File meta event: code " << code
+							<< ": " << name << ": \"" << j->getMetaMessage()
+							<< "\"" << endl;
+						} else {
+							cout << t << ": File meta event: code " << code
+							<< ": " << name << ": ";
+							for (int k = 0; k < j->getMetaMessage().length(); ++k) {
+								cout << (int)j->getMetaMessage()[k] << " ";
+							}
+						}
+					}
+					continue;
+				}
+				
+				switch (j->getMessageType()) {
+						
+					case MIDI_NOTE_ON:
+						if (printMidiInfo)
+						cout << t << ": Note: channel " << ch
+						<< " duration " << j->getDuration()
+						<< " pitch " << j->getPitch()
+						<< " velocity " << j->getVelocity() 
+						<< "event time " << myMidiEvents.getEventTimeMillis(t) << endl;
+				
+						
+						if (noteOnIndex == 0){
+							firstTickTime = t;
+						}
+						
+						noteOnIndex++;
+						
+						v.clear();
+						
+						if (!chopBeginning)
+							v.push_back(t);
+						else
+							v.push_back(t - firstTickTime);
+						
+						v.push_back(j->getPitch());
+						v.push_back(j->getVelocity());
+						v.push_back(j->getDuration());
+						myMidiEvents.recordedNoteOnMatrix.push_back(v);
+						
+						myMidiEvents.noteOnMatches.push_back(false);
+						
+						break;
+						
+					case MIDI_POLY_AFTERTOUCH:
+						if (printMidiInfo)
+						cout << t << ": Polyphonic aftertouch: channel " << ch
+						<< " pitch " << j->getPitch()
+						<< " pressure " << j->getData2() << endl;
+						break;
+						
+					case MIDI_CTRL_CHANGE:
+					{
+						int controller = j->getData1();
+						string name;
+						switch (controller) {
+							case MIDI_CONTROLLER_BANK_MSB: name = "Bank select MSB"; break;
+							case MIDI_CONTROLLER_VOLUME: name = "Volume"; break;
+							case MIDI_CONTROLLER_BANK_LSB: name = "Bank select LSB"; break;
+							case MIDI_CONTROLLER_MODULATION: name = "Modulation wheel"; break;
+							case MIDI_CONTROLLER_PAN: name = "Pan"; break;
+							case MIDI_CONTROLLER_SUSTAIN: name = "Sustain"; break;
+							case MIDI_CONTROLLER_RESONANCE: name = "Resonance"; break;
+							case MIDI_CONTROLLER_RELEASE: name = "Release"; break;
+							case MIDI_CONTROLLER_ATTACK: name = "Attack"; break;
+							case MIDI_CONTROLLER_FILTER: name = "Filter"; break;
+							case MIDI_CONTROLLER_REVERB: name = "Reverb"; break;
+							case MIDI_CONTROLLER_CHORUS: name = "Chorus"; break;
+							case MIDI_CONTROLLER_NRPN_1: name = "NRPN 1"; break;
+							case MIDI_CONTROLLER_NRPN_2: name = "NRPN 2"; break;
+							case MIDI_CONTROLLER_RPN_1: name = "RPN 1"; break;
+							case MIDI_CONTROLLER_RPN_2: name = "RPN 2"; break;
+							case MIDI_CONTROLLER_SOUNDS_OFF: name = "All sounds off"; break;
+							case MIDI_CONTROLLER_RESET: name = "Reset"; break;
+							case MIDI_CONTROLLER_LOCAL: name = "Local"; break;
+							case MIDI_CONTROLLER_ALL_NOTES_OFF: name = "All notes off"; break;
+						}
+						if (printMidiInfo)
+						cout << t << ": Controller change: channel " << ch
+						<< " controller " << j->getData1();
+						if (name != "") cout << " (" << name << ")";
+						cout << " value " << j->getData2() << endl;
+					}
+						break;
+						
+					case MIDI_PROG_CHANGE:
+						if (printMidiInfo)
+						cout << t << ": Program change: channel " << ch
+						<< " program " << j->getData1() << endl;
+						break;
+						
+					case MIDI_CHNL_AFTERTOUCH:
+						if (printMidiInfo)
+						cout << t << ": Channel aftertouch: channel " << ch
+						<< " pressure " << j->getData1() << endl;
+						break;
+						
+					case MIDI_PITCH_BEND:
+						if (printMidiInfo)
+						cout << t << ": Pitch bend: channel " << ch
+						<< " value " << (int)j->getData2() * 128 + (int)j->getData1() << endl;
+						break;
+						
+					case MIDI_SYSTEM_EXCLUSIVE:
+						if (printMidiInfo)
+						cout << t << ": System exclusive: code "
+						<< (int)j->getMessageType() << " message length " <<
+						j->getMetaMessage().length() << endl;
+						break;
+						
+						
+				}
+				
+				
+			}
+			
+			
+		}
+	if (printMidiInfo)
+	myMidiEvents.printRecordedEvents();
+	
+//	printf("|||||||||||||||||||||| \n\n\n\n\n\n\n");
+	myMidiEvents.reorderMatrixFromNoteTimes(myMidiEvents.recordedNoteOnMatrix);
+	myMidiEvents.correctTiming(myMidiEvents.recordedNoteOnMatrix);
+	myMidiEvents.doublecheckOrder(myMidiEvents.recordedNoteOnMatrix);
+
+	createEventTiming(myMidiEvents);
+
+	if (printMidiInfo)
+	myMidiEvents.printRecordedEvents();		
+	
+}//end cannam midi main
+	
+
+void CannamMidiFileLoader::createEventTiming( midiEventHolder& myMidiEvents){
+	
+	long t;
+	t = myMidiEvents.recordedNoteOnMatrix[0][0];
+	firstNoteTime = myMidiEvents.getEventTimeMillis(t);
+	
+	for (int i = 0; i < myMidiEvents.recordedNoteOnMatrix.size();i++){
+		t = myMidiEvents.recordedNoteOnMatrix[i][0];
+		
+		if (!chopBeginning)
+			myMidiEvents.recordedEventTimes.push_back(myMidiEvents.getEventTimeMillis(t));
+		else {
+			myMidiEvents.recordedEventTimes.push_back(myMidiEvents.getEventTimeMillis(t) - firstNoteTime);
+			
+		}
+	}
+	
+}
+
+void CannamMidiFileLoader::setTempoFromMidiValue(long tempo,  midiEventHolder& myMidiEvents){
+	myMidiEvents.tempo = 60000000.0 / double(tempo);
+	myMidiEvents.period = double(tempo)/1000.0;
+	myMidiEvents.ticksFactor = myMidiEvents.pulsesPerQuarternote / myMidiEvents.period;
+}
+	
+
+