TrackAnalyzer(String[] args) throws Exception {
JCommander jcommander = new JCommander(c, args);
jcommander.setProgramName("TrackAnalyzer");
if ((c.filenames.size() == 0 && Utils.isEmpty(c.filelist)) || c.help) {
jcommander.usage();
System.exit(-1);
}
if (c.debug) {
Logger.getLogger(TrackAnalyzer.class.getName()).setLevel(Level.ALL);
} else {
Logger.getLogger(TrackAnalyzer.class.getName()).setLevel(Level.WARNING);
}
// we have a list, read all the filenames in the list and
// collect them in 'filenames'
if (!Utils.isEmpty(c.filelist)) {
try {
// use buffering, reading one line at a time
// FileReader always assumes default encoding is OK!
BufferedReader input = new BufferedReader(new FileReader(new File(c.filelist)));
try {
String line = null; // not declared within while loop
/*
* readLine is a bit quirky :
* it returns the content of a line MINUS the newline.
* it returns null only for the END of the stream.
* it returns an empty String if two newlines appear in a row.
*/
while ((line = input.readLine()) != null) {
filenames.add(line);
}
} finally {
input.close();
}
} catch (IOException ex) {
ex.printStackTrace();
System.exit(-1);
}
}
// add filenames from command line
filenames.addAll(c.filenames);
if (!Utils.isEmpty(c.writeList)) {
try {
writeListWriter = new BufferedWriter(new FileWriter(c.writeList));
} catch (IOException ex) {
Logger.getLogger(TrackAnalyzer.class.getName()).log(Level.SEVERE, null, ex);
}
}
k = new KeyFinder();
p = new Parameters();
p.setHopSize(8192);
}
/**
* runs key and bpm detector on
*
* @filename, optionally writes tags
* @param filename
* @return
*/
public boolean analyzeTrack(String filename, boolean writeTags) {
String wavfilename = "";
AudioData data = new AudioData();
File temp = null;
File temp2 = null;
try {
temp = File.createTempFile("keyfinder", ".wav");
temp2 = File.createTempFile("keyfinder2", ".wav");
wavfilename = temp.getAbsolutePath();
// Delete temp file when program exits.
temp.deleteOnExit();
temp2.deleteOnExit();
decodeAudioFile(new File(filename), temp, 44100);
decodeAudioFile(temp, temp2);
} catch (Exception ex) {
Logger.getLogger(TrackAnalyzer.class.getName())
.log(Level.WARNING, "error while decoding" + filename + ".");
if (temp.length() == 0) {
logDetectionResult(filename, "-", "-", false);
temp.delete();
temp2.delete();
return false;
}
}
KeyDetectionResult r;
try {
data.loadFromAudioFile(temp2.getAbsolutePath());
r = k.findKey(data, p);
if (r.globalKeyEstimate == Parameters.key_t.SILENCE) {
System.out.println("SILENCE");
}
} catch (Exception ex) {
Logger.getLogger(TrackAnalyzer.class.getName()).log(Level.SEVERE, null, ex);
logDetectionResult(filename, "-", "-", false);
deleteTempFiles(temp, temp2);
return false;
}
String formattedBpm = "0";
if (!c.noBpm) {
// get bpm
if (c.hiQuality) {
try {
// decodeAudioFile(new File(filename), temp, 44100);
// @todo hiquality stuff
} catch (Exception ex) {
Logger.getLogger(TrackAnalyzer.class.getName())
.log(
Level.WARNING,
"couldn't decode " + filename + " for hiquality bpm detection.",
ex);
}
}
double bpm = BeatRoot.getBPM(wavfilename);
if (Double.isNaN(bpm) && !c.hiQuality) {
try {
// bpm couldn't be detected. try again with a higher quality wav.
Logger.getLogger(TrackAnalyzer.class.getName())
.log(Level.WARNING, "bpm couldn't be detected for " + filename + ". Trying again.");
decodeAudioFile(new File(filename), temp, 44100);
bpm = BeatRoot.getBPM(wavfilename);
if (Double.isNaN(bpm)) {
Logger.getLogger(TrackAnalyzer.class.getName())
.log(Level.WARNING, "bpm still couldn't be detected for " + filename + ".");
} else {
Logger.getLogger(TrackAnalyzer.class.getName())
.log(Level.INFO, "bpm now detected correctly for " + filename);
}
} catch (Exception ex) {
logDetectionResult(filename, "-", "-", false);
}
} else if (Double.isNaN(bpm) && c.hiQuality) {
Logger.getLogger(TrackAnalyzer.class.getName())
.log(Level.WARNING, "bpm couldn't be detected for " + filename + ".");
}
if (!Double.isNaN(bpm)) {
formattedBpm = new DecimalFormat("#.#").format(bpm).replaceAll(",", ".");
}
}
System.out.printf(
"%s key: %s BPM: %s\n", filename, Parameters.camelotKey(r.globalKeyEstimate), formattedBpm);
boolean wroteTags = false;
if (c.writeTags) {
wroteTags = updateTags(filename, formattedBpm, Parameters.camelotKey(r.globalKeyEstimate));
}
logDetectionResult(
filename, Parameters.camelotKey(r.globalKeyEstimate), formattedBpm, wroteTags);
deleteTempFiles(temp, temp2);
return true;
}
