void AnalyzeTask::parseFileInfo(QXmlStreamReader &xmlStream, AudioFileModel &audioFile)
{
QSet<MI_trackType_t> tracksProcessed;
MI_trackType_t trackType;
while (findNextElement(QLatin1String("Track"), xmlStream))
{
const QString typeString = findAttribute(QLatin1String("Type"), xmlStream.attributes());
if ((trackType = m_trackTypes.value(typeString.toLower(), MI_trackType_t(-1))) != MI_trackType_t(-1))
{
if (!tracksProcessed.contains(trackType))
{
tracksProcessed << trackType;
parseTrackInfo(xmlStream, trackType, audioFile);
}
else
{
qWarning("Skipping non-primary '%s' track!", MUTILS_UTF8(typeString));
xmlStream.skipCurrentElement();
}
}
else
{
qWarning("Skipping unsupported '%s' track!", MUTILS_UTF8(typeString));
xmlStream.skipCurrentElement();
}
}
}
void findNextElement(vector<int> S, vector<vector<int> > &result, vector<int>oneS,
int index, int length)
{
while(index<length)
{
oneS.push_back(S[index]);
result.push_back(oneS);
findNextElement(S, result, oneS, index+1, length);
oneS.pop_back();
index++;
}
}
vector<vector<int> > subsets(vector<int> &S) {
// Start typing your C/C++ solution below
// DO NOT write int main() function
int length = S.size();
vector<vector<int> > result;
sort(S.begin(), S.end());
vector<int> oneS;
result.push_back(oneS);
for(int i=0; i<length; i++)
{
oneS.push_back(S[i]);
result.push_back(oneS);
findNextElement(S, result, oneS, i+1, length);
oneS.pop_back();
}
return result;
}
const AudioFileModel& AnalyzeTask::parseMediaInfo(const QByteArray &data, AudioFileModel &audioFile)
{
QXmlStreamReader xmlStream(data);
bool firstMediaFile = true;
if (findNextElement(QLatin1String("MediaInfo"), xmlStream))
{
const QString versionXml = findAttribute(QLatin1String("Version"), xmlStream.attributes());
if (versionXml.isEmpty() || (!checkVersionStr(versionXml, 2U, 0U)))
{
qWarning("Invalid file format version property: \"%s\"", MUTILS_UTF8(versionXml));
return audioFile;
}
if (findNextElement(QLatin1String("CreatingLibrary"), xmlStream))
{
const QString versionLib = findAttribute(QLatin1String("Version"), xmlStream.attributes());
const QString identifier = xmlStream.readElementText(QXmlStreamReader::SkipChildElements).simplified();
if (!STRICMP(identifier, QLatin1String("MediaInfoLib")))
{
qWarning("Invalid library identiofier property: \"%s\"", MUTILS_UTF8(identifier));
return audioFile;
}
if (!versionLib.isEmpty())
{
if (m_mediaInfoVer != UINT_MAX)
{
const quint32 mediaInfoVer = (m_mediaInfoVer > 9999U) ? m_mediaInfoVer / 10U : m_mediaInfoVer;
if (!checkVersionStr(versionLib, mediaInfoVer / 100U, mediaInfoVer % 100U))
{
qWarning("Invalid library version property: \"%s\"", MUTILS_UTF8(versionLib));
return audioFile;
}
}
}
else
{
qWarning("Library version property not found!");
return audioFile;
}
while (findNextElement(QLatin1String("Media"), xmlStream))
{
if (firstMediaFile || audioFile.techInfo().containerType().isEmpty() || audioFile.techInfo().audioType().isEmpty())
{
firstMediaFile = false;
parseFileInfo(xmlStream, audioFile);
}
else
{
qWarning("Skipping non-primary file!");
xmlStream.skipCurrentElement();
}
}
}
}
if (!(audioFile.techInfo().containerType().isEmpty() || audioFile.techInfo().audioType().isEmpty()))
{
if (audioFile.metaInfo().title().isEmpty())
{
QString baseName = QFileInfo(audioFile.filePath()).fileName();
int index;
if ((index = baseName.lastIndexOf(".")) >= 0)
{
baseName = baseName.left(index);
}
baseName = baseName.replace("_", " ").simplified();
if ((index = baseName.lastIndexOf(" - ")) >= 0)
{
baseName = baseName.mid(index + 3).trimmed();
}
audioFile.metaInfo().setTitle(baseName);
}
if ((audioFile.techInfo().audioType().compare("PCM", Qt::CaseInsensitive) == 0) && (audioFile.techInfo().audioProfile().compare("Float", Qt::CaseInsensitive) == 0))
{
if (audioFile.techInfo().audioBitdepth() == 32) audioFile.techInfo().setAudioBitdepth(AudioFileModel::BITDEPTH_IEEE_FLOAT32);
}
}
else
{
qWarning("Audio file format could *not* be recognized!");
}
return audioFile;
}