Temperaments: load from csv file in qrc ressources

Module Temperaments is fully functionnal

Tuner.pro

@@ -21,4 +21,5 @@ HEADERS += \
 	src/scale/Temperaments.hpp
 
 RESOURCES += \
-	qml/desktop.qrc
+	qml/desktop.qrc \
+	data/temperaments.qrc

data/Temperaments.csv

@@ -1,3 +1,4 @@
+Equal;261.63;277.18;293.66;311.13;329.63;349.23;369.99;392.00;415.30;440.00;466.16;493.88
 Werckmeister III;263.40;277.50;294.33;312.18;330.00;351.21;369.99;393.77;416.24;440.00;468.27;495.00
 Kirnberger I;264.00;278.12;297.00;312.89;330.00;352.00;371.25;396.00;417.19;440.00;469.33;495.00
 Kirnberger II;262.36;276.40;295.16;310.95;327.95;349.81;368.94;393.54;414.59;440.00;466.42;491.93
@@ -6,7 +7,6 @@ Kirnberger III unequal;263.10;277.18;294.50;311.82;328.88;350.80;369.98;393.80;4
 Kelletat;262.82;276.97;294.33;311.49;328.65;350.43;369.29;393.81;415.32;440.00;467.24;492.39
 Kellner;262.87;276.93;294.13;311.55;329.11;350.49;369.24;393.24;415.40;440.00;467.32;493.66
 Billeter;262.40;276.71;294.50;311.29;328.70;350.20;368.95;393.10;415.07;440.00;466.93;492.50
-Equal temperature;261.63;277.18;293.66;311.13;329.63;349.23;369.99;392.00;415.30;440.00;466.16;493.88
 Lehman 1/6 Pyth.;262.53;277.82;294.00;311.85;329.25;350.85;370.42;392.90;416.27;440.00;467.24;493.88
 Lehman 1/6 Synt.;262.35;277.89;293.94;311.92;329.32;350.52;370.51;392.72;416.36;440.00;467.35;494.00
 Fritz (1756 - Equal Beat);261.76;277.33;293.73;311.25;329.70;349.41;370.17;392.04;415.39;440.00;466.27;493.96

data/temperaments.qrc

@@ -0,0 +1,5 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource prefix="/data/">
+<file>Temperaments.csv</file>
+</qresource>
+</RCC>

harbour-sailtuner.pro

@@ -7,7 +7,8 @@ DEFINES += TARGET=\""$(TARGET")\"
 # PKGCONFIG += libpulse
 
 RESOURCES += \
-	qml/sailfish.qrc
+	qml/sailfish.qrc \
+	data/temperaments.qrc
 
 SOURCES += \
 	src/sailfish.cpp \

src/Tuner.cpp

@@ -67,7 +67,14 @@ Tuner::Tuner()
 	cross = new ZeroCross<int16_t>(cross_config);
 
 	scale = new Scale();
+
+	temperaments = new Temperaments(":/data");
+	if (temperaments->SetTemperament(0)) {
+		scale->SetNotesFrequencies(temperaments->NotesFrequencies());
+	}
+	else {
 		scale->ConstructEqualTemperament();
+	}
 
 	settings.setCodec("audio/PCM");
 	settings.setChannelCount(1);
@@ -269,6 +276,24 @@ bool Tuner::GetFound()
 	return found;
 }
 
+unsigned int Tuner::GetTemperamentIndex()
+{
+	return temperaments->GetCurrentIndex();
+}
+
+void Tuner::SetTemperamentIndex(unsigned int idx)
+{
+	if (temperaments->SetTemperament(idx)) {
+		scale->SetNotesFrequencies(temperaments->NotesFrequencies());
+		temperamentChanged();
+	}
+}
+
+QStringList Tuner::GetTemperamentList() const
+{
+	return temperaments->GetNames();
+}
+
 /// Set a filename to record raw audio stream
 
 void Tuner::set_record(const char *f)

src/Tuner.hpp

@@ -23,6 +23,7 @@
 #include "audio/LinearFilter.hpp"
 #include "audio/ZeroCross.hpp"
 #include "scale/Scale.hpp"
+#include "scale/Temperaments.hpp"
 
 class Tuner : public QObject {
 	Q_OBJECT
@@ -33,6 +34,8 @@ class Tuner : public QObject {
 	Q_PROPERTY(int octave READ GetOctave NOTIFY octaveChanged)
 	Q_PROPERTY(bool found READ GetFound NOTIFY foundChanged)
 	Q_PROPERTY(QString noteName READ GetNoteName NOTIFY noteNameChanged)
+	Q_PROPERTY(int temperament_idx READ GetTemperamentIndex WRITE SetTemperamentIndex NOTIFY temperamentChanged)
+	Q_PROPERTY(QStringList temperament_list READ GetTemperamentList)
 
 	private:
 	QAudioRecorder *recorder;
@@ -42,6 +45,7 @@ class Tuner : public QObject {
 	LinearFilter<int16_t> *high_filter;
 	ZeroCross<int16_t> *cross;
 	Scale *scale;
+	Temperaments *temperaments;
 	static const char *filename_record;
 	std::ofstream file_record;
 
@@ -92,6 +96,9 @@ class Tuner : public QObject {
 	double GetDeviation();
 	bool GetFound();
 	const char* GetNoteName();
+	unsigned int GetTemperamentIndex();
+	void SetTemperamentIndex(unsigned int idx);
+	QStringList GetTemperamentList() const;
 
 	/// analyse a file for debug
 	static void analyse_file(const char *filename);
@@ -106,4 +113,5 @@ class Tuner : public QObject {
 	void octaveChanged();
 	void deviationChanged();
 	void foundChanged();
+	void temperamentChanged();
 };

src/scale/Scale.cpp

@@ -41,7 +41,10 @@ Scale::Scale()
 void Scale::updateScale()
 {
 	actualFactor = actualLa / defaultLa;
-	for (int i = 0; i < nbNote; i++) actualNoteFreq[i] = actualFactor * noteFreq[i];
+	for (int i = 0; i < nbNote; i++) {
+		actualNoteFreq[i] = actualFactor * noteFreq[i];
+//		std::cerr << " " << noteFreq[i] << " " << actualNoteFreq[i] << std::endl;
+	}
 	actualRange[0] = actualNoteFreq[0] * pow(halfToneFactor(0, -1),0.5);
 	actualRange[1] = actualNoteFreq[nbNote - 1] * pow(halfToneFactor(nbNote - 1, 1), 0.5);
 
@@ -116,7 +119,7 @@ double Scale::GetLa()
 	return actualLa;
 }
 
-void Scale::SetNotesFrequencies(double freq[nbNote])
+void Scale::SetNotesFrequencies(const double freq[nbNote])
 {
 	memcpy(noteFreq, freq, sizeof(double) * nbNote);
 	updateScale();

src/scale/Scale.hpp

@@ -52,7 +52,7 @@ class Scale {
 	void ConstructEqualTemperament();
 
 	/// Set notes frequencies from a temperament
-	void SetNotesFrequencies(double freq[nbNote]);
+	void SetNotesFrequencies(const double freq[nbNote]);
 
 	double GetLa();
 	void SetLa(double la);

src/scale/Temperaments.cpp

@@ -15,59 +15,128 @@
  *
  */
 
-#include <fstream>
-#include <iostream>
-#include <dirent.h>
-#include <sys/stat.h>
+#include <QDir>
+#include <QDebug>
 
 #include "Temperaments.hpp"
 
 using namespace std;
 
-Temperaments::Temperaments(const char * dirname) : current(0)
+Temperaments::Temperaments(const QString & dirname) : current(0)
 {
 	GetDir(dirname);
 }
 
-void Temperaments::GetDir(const char * dirname)
+void Temperaments::GetDir(const QString & dirname)
 {
-	DIR *pdir = opendir(dirname);
-	struct dirent *pent = NULL;
-	struct stat filestat;
-	string filepath;
-
-	if (!pdir) {
-		cerr << __func__ << ": impossible to open dir " << dirname << endl;
+	QDir dir(dirname);
+	if (!dir.exists()) {
+		qDebug() << __func__ << "dir doesn't exist: " << dirname;
 		return;
 	}
-	while((pent = readdir(pdir))) {
-		// get only files
-		if (pent->d_name[0] == '.') continue;
-		filepath = dirname;
-		filepath += "/";
-		filepath	+= pent->d_name;
-		if (stat(filepath.c_str(), &filestat )) continue;
-		if (S_ISDIR( filestat.st_mode )) continue;
+	dir.setFilter(QDir::Files);
+	QStringList files = dir.entryList();
+	for (auto &f : files) CheckFile(dirname + "/" + f);
 
-		CheckFile(filepath);
-	}
+	qDebug() << list.size() << "temperaments";
 }
 
-void Temperaments::CheckFile(string filename)
+void Temperaments::CheckFile(const QString & filename)
 {
-	cout << __func__ << " " << filename << endl;
+	qDebug() << __func__ << "check " << filename;
+	QFile file(filename);
+	if (!file.exists()) {
+		qDebug() << __func__ << "file doesn't exist: " << filename;
+		return;
+	}
+	if (!file.open(QIODevice::ReadOnly)) {
+		qDebug() << __func__ << "cannot open file " << filename;
+		return;
+	}
+	QByteArray line;
+	QString name;
+	int offset, f_pos;
+	int n_line = 0;
+	while (1) {
+		f_pos = file.pos();
+		line = file.readLine();
+		if (line.count() == 0) break;
+		n_line++;
+		offset = line.indexOf(';');
+		if (offset < 1) {
+			qDebug() << __func__ << "cannot read line " << n_line;
+			continue;
+		}
+		// add temperament
+		name = line.left(offset);
+		qDebug() << " -> add temperament" << name;
+		list.push_back(temp_t{name, filename, f_pos});
+	}
 }
 
-string Temperaments::GetCurrentName() const
+bool Temperaments::CheckoutTemperament(const temp_t &temp)
+{
+	QFile file(temp.file);
+	if (!file.open(QIODevice::ReadOnly)) {
+		qDebug() << __func__ << "cannot open file " << temp.file;
+		return false;
+	}
+	file.seek(temp.seek);
+	QByteArray line = file.readLine();
+	if (line.count() == 0) {
+		qDebug() << __func__ << "empty line" << temp.file << "pos" << temp.seek;
+		return false;
+	}
+	auto tab = line.trimmed().split(';');
+	if (tab.count() != nb_notes + 1) {
+		qDebug() << __func__ << "nb element not match" << temp.file << "pos" << temp.seek << "count" << tab.count();
+		return false;
+	}
+	for (int i = 1; i < nb_notes + 1; i++) {
+		notes[i-1] = tab[i].toDouble();
+	}
+	qDebug() << "temperament" << temp.name << "loaded";
+	return true;
+}
+
+bool Temperaments::SetTemperament(unsigned int index)
+{
+	if (index >= list.size()) {
+		qDebug() << __func__ << "index" << index << "out of range";
+		return false;
+	}
+	current = index;
+	return CheckoutTemperament(list[current]);
+}
+
+bool Temperaments::SetTemperament(const QString name)
+{
+	int idx = 0;
+	for (auto &t : list) {
+		if (t.name == name) {
+			return SetTemperament(idx);
+		}
+		idx++;
+	}
+	return false;
+}
+
+unsigned int Temperaments::GetCurrentIndex() const
+{
+	return current;
+}
+
+QString Temperaments::GetCurrentName() const
 {
 	if (current >= list.size()) return "";
 	return list[current].name;
 }
 
-string Temperaments::GetName(unsigned int n) const
+QStringList  Temperaments::GetNames() const
 {
-	if (n < list.size()) return "";
-	return list[n].name;
+	QStringList ret;
+	for (auto & t : list) ret << t.name;
+	return ret;
 }
 
 const double * Temperaments::NotesFrequencies() const

src/scale/Temperaments.hpp

@@ -18,7 +18,7 @@
 #ifndef __TEMPERAMENTS_HPP
 #define __TEMPERAMENTS_HPP
 
-#include <string>
+#include <QString>
 #include <vector>
 
 /**
@@ -31,8 +31,8 @@ class Temperaments {
 	private:
 	/// describe internal a temperament
 	struct temp_t {
-		std::string name; ///< temperament name
-		std::string file; ///< file name
+		QString name; ///< temperament name
+		QString file; ///< file name
 		int seek; ///< position in file
 	};
 
@@ -42,21 +42,24 @@ class Temperaments {
 	std::vector<temp_t> list;
 	double notes[nb_notes];
 
-	void GetDir(const char *dirname);
-	void CheckFile(std::string filename);
-	void GetTemperament(const temp_t temperament);
+	void GetDir(const QString & dirname);
+	void CheckFile(const QString & filename);
+	bool CheckoutTemperament(const temp_t & temperament);
 
 	public:
 	/// constructor with dir name to find data files
-	Temperaments(const char * dirname);
+	Temperaments(const QString & dirname);
 	~Temperaments();
 
 	/// set current temperament
-	bool SetTemperament(std::string name);
+	bool SetTemperament(const QString name);
+	bool SetTemperament(unsigned int index);
+	/// get index of current temperament
+	unsigned int GetCurrentIndex() const;
 	/// get the name of current temperament
-	std::string GetCurrentName() const;
+	QString GetCurrentName() const;
 	/// get the name of temperament number n
-	std::string GetName(unsigned int n) const;
+	QStringList GetNames() const;
 	/// get notes frequencies as double[nb_notes]
 	const double * NotesFrequencies() const;
 };