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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
/*
Sonic Visualiser
An audio file viewer and annotation editor.
Centre for Digital Music, Queen Mary, University of London.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version. See the file
COPYING included with this distribution for more information.
*/
#ifndef SV_PATH_H
#define SV_PATH_H
#include "base/XmlExportable.h"
#include "base/RealTime.h"
#include "base/BaseTypes.h"
#include <QStringList>
#include <QTextStream>
#include <set>
namespace sv {
struct PathPoint
{
PathPoint(sv_frame_t _frame) :
frame(_frame), mapframe(_frame) { }
PathPoint(sv_frame_t _frame, sv_frame_t _mapframe) :
frame(_frame), mapframe(_mapframe) { }
// "The path consists of a series of points, each with frame equal
// to the frame on the source model (aligned model) and mapframe
// equal to the frame on the target model (reference model). Both
// should be monotonically increasing."
sv_frame_t frame;
sv_frame_t mapframe;
void toXml(QTextStream &stream, QString indent = "",
QString extraAttributes = "") const {
stream << QString("%1<point frame=\"%2\" mapframe=\"%3\" %4/>\n")
.arg(indent).arg(frame).arg(mapframe).arg(extraAttributes);
}
QString toDelimitedDataString(QString delimiter, DataExportOptions,
sv_samplerate_t sampleRate) const {
QStringList list;
list << RealTime::frame2RealTime(frame, sampleRate).toString().c_str();
list << QString("%1").arg(mapframe);
return list.join(delimiter);
}
bool operator<(const PathPoint &p2) const {
if (frame != p2.frame) return frame < p2.frame;
return mapframe < p2.mapframe;
}
};
class Path : public XmlExportable
{
public:
Path(sv_samplerate_t sampleRate, int resolution) :
m_sampleRate(sampleRate),
m_resolution(resolution) {
}
Path(const Path &) =default;
Path &operator=(const Path &) =default;
typedef std::set<PathPoint> Points;
sv_samplerate_t getSampleRate() const { return m_sampleRate; }
int getResolution() const { return m_resolution; }
int getPointCount() const {
return int(m_points.size());
}
const Points &getPoints() const {
return m_points;
}
void add(PathPoint p) {
m_points.insert(p);
}
void remove(PathPoint p) {
m_points.erase(p);
}
void clear() {
m_points.clear();
}
/**
* XmlExportable methods.
*/
void toXml(QTextStream &out,
QString indent = "",
QString extraAttributes = "") const override {
// For historical reasons we serialise a Path as a model,
// although the class itself no longer is.
// We also write start and end frames - which our API no
// longer exposes - just for backward compatibility
sv_frame_t start = 0;
sv_frame_t end = 0;
if (!m_points.empty()) {
start = m_points.begin()->frame;
end = m_points.rbegin()->frame + m_resolution;
}
// Our dataset doesn't have its own export ID, we just use
// ours. Actually any model could do that, since datasets
// aren't in the same id-space as models (or paths) when
// re-read
out << indent;
out << QString("<model id=\"%1\" name=\"\" sampleRate=\"%2\" "
"start=\"%3\" end=\"%4\" type=\"sparse\" "
"dimensions=\"2\" resolution=\"%5\" "
"notifyOnAdd=\"true\" dataset=\"%6\" "
"subtype=\"path\" %7/>\n")
.arg(getExportId())
.arg(m_sampleRate)
.arg(start)
.arg(end)
.arg(m_resolution)
.arg(getExportId())
.arg(extraAttributes);
out << indent << QString("<dataset id=\"%1\" dimensions=\"2\">\n")
.arg(getExportId());
for (PathPoint p: m_points) {
p.toXml(out, indent + " ", "");
}
out << indent << "</dataset>\n";
}
QString toDelimitedDataString(QString delimiter,
DataExportOptions,
sv_frame_t startFrame,
sv_frame_t duration) const {
QString s;
for (PathPoint p: m_points) {
if (p.frame < startFrame) continue;
if (p.frame >= startFrame + duration) break;
s += QString("%1%2%3\n")
.arg(p.frame)
.arg(delimiter)
.arg(p.mapframe);
}
return s;
}
protected:
sv_samplerate_t m_sampleRate;
int m_resolution;
Points m_points;
};
} // end namespace sv
#endif
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