初始化内容

third/midifile/tools/mid2mtb.cpp

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+//
+// Programmer:    Craig Stuart Sapp <craig@ccrma.stanford.edu>
+// Creation Date: Tue Feb  2 15:06:12 PST 2016
+// Last Modified: Tue Feb  2 15:06:15 PST 2016
+// Filename:      tools/mid2mtb.cpp
+// URL:           https://github.com/craigsapp/midifile/blob/master/tools/mid2mtb.cpp
+// Syntax:        C++11
+// vim:           ts=3
+//
+// Description:   Converts a MIDI file into a MIDI Toolbox compatible
+//                text file.
+//
+
+#include "MidiFile.h"
+#include "Options.h"
+
+#include <cctype>
+#include <cmath>
+#include <cstdio>
+#include <cstring>
+#include <vector>
+
+using namespace std;
+using namespace smf;
+
+
+void  convertMidiFile   (MidiFile& midifile, vector<vector<double> >& matlab);
+void  checkOptions      (Options& opts, int argc, char** argv);
+void  example           (void);
+void  usage             (const char* command);
+void  printEvent        (vector<double>& event);
+void  printLegend       (MidiFile& midifile);
+void  printMatlabArray  (MidiFile& midifile, vector<vector<double> >& matlab);
+
+// User interface variables
+Options options;
+vector<vector<double> > matlabarray;
+
+
+//////////////////////////////////////////////////////////////////////////
+
+int main(int argc, char* argv[]) {
+	matlabarray.reserve(100000);
+	matlabarray.clear();
+	checkOptions(options, argc, argv);
+	MidiFile midifile(options.getArg(1));
+	convertMidiFile(midifile, matlabarray);
+	printMatlabArray(midifile, matlabarray);
+	return 0;
+}
+
+//////////////////////////////////////////////////////////////////////////
+
+
+
+//////////////////////////////
+//
+// convertMidiFile --
+//
+
+void convertMidiFile(MidiFile& midifile, vector<vector<double> >& matlab) {
+	midifile.absoluteTicks();
+	midifile.linkNotePairs();
+	midifile.joinTracks();
+	midifile.doTimeAnalysis();
+
+	vector<double> parameters(8);
+	// 1: beat on time
+	// 2: beat duration
+	// 3: channel
+	// 4: pitch #
+	// 5: velocity
+	// 6: start time (seconds)
+	// 7: duration (seconds)
+	// 8: track
+
+	double tpq = midifile.getTicksPerQuarterNote();
+	double beatstart;
+	double beatdur;
+	double starttime;
+	double duration;
+	double channel;
+	double key;
+	double velocity;
+	double track;
+	for (int i=0; i<midifile[0].size(); i++) {
+		if (!midifile[0][i].isNoteOn()) {
+			continue;
+		}
+		beatstart = midifile[0][i].tick / tpq;
+		beatdur = midifile[0][i].getTickDuration() / tpq;
+		starttime = midifile.getTimeInSeconds(0, i);
+		duration = midifile[0][i].getDurationInSeconds();
+		channel = midifile[0][i].getChannelNibble() + 1;
+		key = midifile[0][i][1];
+		velocity = midifile[0][i][2];
+		track = midifile[0][i].track + 1;
+		parameters[0] = beatstart;
+		parameters[1] = beatdur;
+		parameters[2] = channel;
+		parameters[3] = key;
+		parameters[4] = velocity;
+		parameters[5] = starttime;
+		parameters[6] = duration;
+		parameters[7] = track;
+		matlab.push_back(parameters);
+	}
+}
+
+
+
+//////////////////////////////
+//
+// checkOptions --
+//
+
+void checkOptions(Options& opts, int argc, char* argv[]) {
+
+	opts.define("author=b",  "author of program");
+	opts.define("version=b", "compilation info");
+	opts.define("example=b", "example usages");
+	opts.define("h|help=b",  "short description");
+
+	opts.define("debug=b",  "debug mode to find errors in input file");
+	opts.define("max=i:100000", "maximum number of notes expected in input");
+
+	opts.process(argc, argv);
+
+	// handle basic options:
+	if (opts.getBoolean("author")) {
+		cout << "Written by Craig Stuart Sapp, "
+			  << "craig@ccrma.stanford.edu, 22 Jan 2002" << endl;
+		exit(0);
+	} else if (opts.getBoolean("version")) {
+		cout << argv[0] << ", version: 12 Nov 2003" << endl;
+		cout << "compiled: " << __DATE__ << endl;
+		exit(0);
+	} else if (opts.getBoolean("help")) {
+		usage(opts.getCommand().c_str());
+		exit(0);
+	} else if (opts.getBoolean("example")) {
+		example();
+		exit(0);
+	}
+
+	if (opts.getArgCount() != 1) {
+		usage(opts.getCommand().c_str());
+		exit(1);
+	}
+}
+
+
+
+//////////////////////////////
+//
+// example --
+//
+
+void example(void) {
+
+}
+
+
+
+//////////////////////////////
+//
+// usage --
+//
+
+void usage(const char* command) {
+	cout << "Usage: " << command << " midifile" << endl;
+}
+
+
+
+void printLegend(MidiFile& midifile) {
+	cout << "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\n";
+	cout << "%% DATA LEGEND                                               %%\n";
+	cout << "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\n";
+	cout << "%%Filename: " << midifile.getFilename() << endl;
+	cout << "%%Ticks per quarter note: " << midifile.getTicksPerQuarterNote()
+		  << "\n";
+	cout << "%%" << endl;
+	cout << "%% Meaning of columns:" << endl;
+	cout << "%%(1) note start in beats (quarter notes)." << endl;
+	cout << "%%(2) note duration in beats (quarter notes)." << endl;
+	cout << "%%(3) MIDI channel (indexed from 1)." << endl;
+	cout << "%%(4) MIDI pitch (60 = C4)" << endl;
+	cout << "%%(5) MIDI velocity (60 = C4)" << endl;
+	cout << "%%(6) note start in seconds." << endl;
+	cout << "%%(7) note duration in seconds." << endl;
+	cout << "%%(8) MIDI file track." << endl;
+	cout << "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\n";
+}
+
+
+
+//////////////////////////////
+//
+// printMatlabArray -- print the Matlab array representing the MIDI file.
+//    If not in time order, see sourcecode for mid2mat.cpp for sorting function.
+//
+
+void printMatlabArray(MidiFile& midifile, vector<vector<double> >& matlab) {
+	int i;
+	printLegend(midifile);
+	for (i=0; i<(int)matlab.size(); i++) {
+		printEvent(matlab[i]);
+	}
+}
+
+
+
+//////////////////////////////
+//
+// printEvent -- print the event
+//
+
+void printEvent(vector<double>& event) {
+	for (int i=0; i<(int)event.size(); i++) {
+		cout << event[i];
+		if (i<(int)event.size()-1) {
+			cout << "\t";
+		}
+	}
+	cout << "\n";
+}
+
+
+