初始化内容

third/midifile/tools/chaninfo.cpp

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+//
+// Programmer:    Craig Stuart Sapp <craig@ccrma.stanford.edu>
+// Creation Date: Sun Jun  5 13:56:03 PDT 2022
+// Last Modified: Sun Jun  5 14:06:06 PDT 2022
+// Filename:      tools/channelinfo.cpp
+// URL:           https://github.com/craigsapp/midifile/blob/master/tools/channelinfo.cpp
+// Syntax:        C++11
+// vim:           ts=3
+//
+// Description:   List channels used for notes in each track and list timbres
+//                used in each channel.
+//
+
+#include "MidiFile.h"
+#include "Options.h"
+
+#include <iostream>
+
+using namespace std;
+using namespace smf;
+
+
+void processFile(MidiFile& midifile, Options& options);
+void printTrackInfo(MidiFile& midifile, int track);
+
+
+///////////////////////////////////////////////////////////////////////////
+
+int main(int argc, char** argv) {
+	Options options;
+	options.process(argc, argv);
+	MidiFile midifile;
+	if (options.getArgCount() == 0) {
+		midifile.read(cin);
+		processFile(midifile, options);
+	} else {
+		int count = options.getArgCount();
+		for (int i=0; i<count; i++) {
+			string filename = options.getArg(i+1);
+			if (count > 1) {
+				cout << filename << "\t";
+			}
+			midifile.read(filename);
+			processFile(midifile, options);
+		}
+	}
+	return 0;
+}
+
+
+///////////////////////////////////////////////////////////////////////////
+
+//////////////////////////////
+//
+// processFile --
+//
+
+void processFile(MidiFile& midifile, Options& options) {
+	for (int i=0; i<midifile.getTrackCount(); i++) {
+		printTrackInfo(midifile, i);
+	}
+}
+
+
+//////////////////////////////
+//
+// printTrackInfo --
+//
+
+void printTrackInfo(MidiFile& midifile, int track) {
+	vector<bool> channels(16, false);
+	string trackName = "";
+	vector<vector<int>> patches(16);
+	int chan;
+	for (int i=0; i<midifile[track].getEventCount(); i++) {
+		if (midifile[track][i].isPatchChange()) {
+			chan = midifile[track][i].getChannel();
+			patches.at(chan).push_back(midifile[track][i].getP1());
+			channels.at(chan) = true;
+		} else if (midifile[track][i].isNoteOn()) {
+			chan = midifile[track][i].getChannel();
+			channels.at(chan) = true;
+		} else if (midifile[track][i].isTrackName()) {
+			trackName = midifile[track][i].getMetaContent();
+		}
+	}
+
+	cout << "TRACK " << (track+1) << ":" << endl;
+	if (!trackName.empty()) {
+		cout << "\tNAME: " << trackName << endl;
+	}
+	for (int i=0; i<16; i++) {
+		if (!channels[i]) {
+			continue;
+		}
+		cout << "\tChannel " << (i+1);
+		if (!patches[i].empty()) {
+			cout << ": ";
+		}
+		for (int j=0; j<(int)patches[i].size(); j++) {
+			cout << MidiFile::getGMInstrumentName(patches[i][j]);
+			if (j < (int)patches[i].size()- 1) {
+				cout << ", ";
+			}
+		}
+		cout << endl;
+	}
+}
+
+
+