experiment with audio/paperreplay data

1 files changed, 183 insertions, 0 deletions

diff --git a/replaydata.cc b/replaydata.cc
new file mode 100644
index 0000000..021a79f
--- /dev/null
+++ b/replaydata.cc
@@ -0,0 +1,183 @@
+#include <QtCore/QDebug>
+#include <QtCore/QDataStream>
+#include <QtCore/QDirIterator>
+#include "smartpen.h"
+#include "replaydata.h"
+
+namespace
+{
+bool readUtfString(QDataStream &stream, QString &s)
+{
+	quint16 len;
+	stream >> len;
+	QByteArray buffer(len, Qt::Uninitialized);
+	if (stream.readRawData(buffer.data(), len) != len) {
+		return false;
+	}
+	s = QString::fromUtf8(buffer);
+	return true;
+}
+}
+
+ReplayData::ReplayData(QObject *parent) :
+    QObject(parent)
+{
+}
+
+bool ReplayData::open(const QString &path)
+{
+	_dir.setPath(path);
+	if (!_dir.exists()) {
+		return false;
+	}
+
+	QDirIterator iter(_dir.path(), QStringList("session.info"), QDir::Files, QDirIterator::Subdirectories);
+	while (iter.hasNext()) {
+		QFileInfo finfo(iter.next());
+		QDir sessionDir(finfo.path());
+		Session session;
+		if (!parseSessionInfo(session, finfo.filePath())) {
+			qWarning() << "Could not parse:" << finfo.absoluteFilePath();
+		}
+		if (!parseSessionPages(session, sessionDir.filePath("session.pages"))) {
+			qWarning() << "Could not parse:" << sessionDir.absoluteFilePath("session.pages");
+		}
+	}
+
+	return true;
+}
+
+bool ReplayData::parseSessionInfo(Session &session, const QString &path)
+{
+	QFile f(path);
+	if (f.open(QIODevice::ReadOnly)) {
+		return parseSessionInfo(session, &f);
+	} else {
+		return false;
+	}
+}
+
+bool ReplayData::parseSessionInfo(Session &session, QIODevice *dev)
+{
+	unsigned char magic[2];
+	if (dev->read(reinterpret_cast<char*>(magic), 2) != 2 ||
+	        magic[0] != 0xFA || magic[1] != 0xCE) {
+		qWarning() << "Invalid magic";
+		return false;
+	}
+
+	char version = 0;
+	if (!dev->getChar(&version)) {
+		qWarning() << "Short read while getting version number";
+		return false;
+	}
+
+	switch (version) {
+	case 3:
+		return parseSessionInfoV3(session, dev);
+	default:
+		qWarning() << "Unknown version:" << version;
+		return false;
+	}
+}
+
+bool ReplayData::parseSessionInfoV3(Session &session, QIODevice *dev)
+{
+	QDataStream s(dev);
+	if (s.skipRawData(5) != 5) return false;
+
+	qint64 startTime, endTime, creationTime;
+	QString name;
+
+	s >> startTime >> endTime >> creationTime;
+	if (!readUtfString(s, name)) {
+		return false;
+	}
+
+	qDebug() << "Name:" << name << Smartpen::fromPenTime(startTime) << Smartpen::fromPenTime(endTime) << creationTime;
+
+	quint16 num_clips;
+	s >> num_clips;
+
+	for (uint i = 0; i < num_clips; ++i) {
+		QString file;
+		if (!readUtfString(s, file)) {
+			return false;
+		}
+		s >> startTime >> endTime;
+		qDebug() << " Clip:" << file << startTime << endTime;
+		qDebug() << "    " << QDateTime::fromTime_t(startTime) << QDateTime::fromTime_t(endTime);
+	}
+
+	quint16 num_strokes;
+	s >> num_strokes;
+
+	for (uint i = 0; i < num_strokes; ++i) {
+		quint64 a, b, c;
+		quint32 d;
+		QString nbGuid;
+		quint8 f, g;
+		s >> a >> b >> c >> d;
+		if (!readUtfString(s, nbGuid)) {
+			return false;
+		}
+		s >> f >> g;
+		qDebug() << " Stroke:" << a << b << c << d << nbGuid << f << g;
+	}
+
+	return true;
+}
+
+bool ReplayData::parseSessionPages(Session &session, const QString &path)
+{
+	QFile f(path);
+	if (f.open(QIODevice::ReadOnly)) {
+		return parseSessionPages(session, &f);
+	} else {
+		return false;
+	}
+}
+
+bool ReplayData::parseSessionPages(Session &session, QIODevice *dev)
+{
+	unsigned char magic[2];
+	if (dev->read(reinterpret_cast<char*>(magic), 2) != 2 ||
+	        magic[0] != 0xCA || magic[1] != 0xBE) {
+		qWarning() << "Invalid magic";
+		return false;
+	}
+
+	char version = 0;
+	if (!dev->getChar(&version)) {
+		qWarning() << "Short read while getting version number";
+		return false;
+	}
+
+	switch (version) {
+	case 1:
+		return parseSessionPagesV1(session, dev);
+	default:
+		qWarning() << "Unknown version:" << version;
+		return false;
+	}
+}
+
+bool ReplayData::parseSessionPagesV1(Session &session, QIODevice *dev)
+{
+	QDataStream s(dev);
+	if (s.skipRawData(1) != 1) return false;
+
+	quint16 num_pages = 0;
+	s >> num_pages;
+	session.pages.reserve(session.pages.size() + num_pages);
+
+	for (uint i = 0; i < num_pages; ++i) {
+		quint64 address, unk;
+		s >> address >> unk;
+
+		session.pages.append(address);
+		qDebug() << " Page:" << address << unk;
+	}
+
+	return true;
+}