void cMediaInfo::readTagProperties(TagLib::PropertyMap& tags)
{
QString szID;
for(TagLib::PropertyMap::ConstIterator i = tags.begin(); i != tags.end(); ++i)
{
QStringList szValue;
szID = QString::fromStdWString(i->first.toWString());
if(!szID.isEmpty())
{
for(TagLib::StringList::ConstIterator j = i->second.begin(); j != i->second.end(); ++j)
{
QString sz = QString::fromStdWString((*j).toWString());
if(!sz.isEmpty())
{
if(!szID.compare("LYRICS"))
{
sz.replace("\"", "'");
sz.replace("\r\n", "\n");
szValue.append(sz);
}
else
szValue.append(sz.split("\n"));
}
}
if(!szID.isEmpty() && !szValue.isEmpty())
m_TAGPropertiesList.add(szID, szValue);
}
}
}
int handle_file(const char* filepath, const char* filekey, AudioFileRecordStore& record_store)
{
bool record_exists = record_store.find_record(filekey) != NULL;
// Scanning a file for tags is expensive, so only do it if required.
if(record_exists
&& !record_store.record_update_required(filekey))
{
// no update reqquired so has been handled.
return 1;
}
TagLib::FileRef f(filepath);
if (!f.isNull() && f.tag())
{
AudioFileRecord &record = record_store.get_record(filekey);
record.update_start();
if (verbose)
{
TagLib::Tag *tag = f.tag();
std::cout << filepath << endl;
std::cout << filekey << endl;
std::cout << "-- TAG (basic) --" << endl;
std::cout << "title - \"" << tag->title() << "\"" << endl;
std::cout << "artist - \"" << tag->artist() << "\"" << endl;
std::cout << "album - \"" << tag->album() << "\"" << endl;
std::cout << "year - \"" << tag->year() << "\"" << endl;
std::cout << "comment - \"" << tag->comment() << "\"" << endl;
std::cout << "track - \"" << tag->track() << "\"" << endl;
std::cout << "genre - \"" << tag->genre() << "\"" << endl;
}
TagLib::PropertyMap tags = f.file()->properties();
for(TagLib::PropertyMap::ConstIterator i = tags.begin(); i != tags.end(); ++i)
{
for(TagLib::StringList::ConstIterator j = i->second.begin(); j != i->second.end(); ++j)
{
record.update(i->first.toCString(true), j->toCString(true));
}
}
if (f.audioProperties())
{
TagLib::AudioProperties *properties = f.audioProperties();
record.update(audio_tags::BITRATE, properties->bitrate());
record.update(audio_tags::LENGTH, properties->length());
record.update(audio_tags::SAMPLERATE, properties->sampleRate());
record.update(audio_tags::CHANNELS, properties->channels());
}
record.update_complete();
return 1;
}
return 0;
}
int main(int argc, char *argv[])
{
for(int i = 1; i < argc; i++) {
cout << "******************** \"" << argv[i] << "\" ********************" << endl;
TagLib::FileRef f(argv[i]);
if(!f.isNull() && f.tag()) {
TagLib::Tag *tag = f.tag();
cout << "-- TAG (basic) --" << endl;
cout << "title - \"" << tag->title() << "\"" << endl;
cout << "artist - \"" << tag->artist() << "\"" << endl;
cout << "album - \"" << tag->album() << "\"" << endl;
cout << "year - \"" << tag->year() << "\"" << endl;
cout << "comment - \"" << tag->comment() << "\"" << endl;
cout << "track - \"" << tag->track() << "\"" << endl;
cout << "genre - \"" << tag->genre() << "\"" << endl;
TagLib::PropertyMap tags = f.file()->properties();
unsigned int longest = 0;
for(TagLib::PropertyMap::ConstIterator i = tags.begin(); i != tags.end(); ++i) {
if (i->first.size() > longest) {
longest = i->first.size();
}
}
cout << "-- TAG (properties) --" << endl;
for(TagLib::PropertyMap::ConstIterator i = tags.begin(); i != tags.end(); ++i) {
for(TagLib::StringList::ConstIterator j = i->second.begin(); j != i->second.end(); ++j) {
cout << left << std::setw(longest) << i->first << " - " << '"' << *j << '"' << endl;
}
}
}
if(!f.isNull() && f.audioProperties()) {
TagLib::AudioProperties *properties = f.audioProperties();
int seconds = properties->length() % 60;
int minutes = (properties->length() - seconds) / 60;
cout << "-- AUDIO --" << endl;
cout << "bitrate - " << properties->bitrate() << endl;
cout << "sample rate - " << properties->sampleRate() << endl;
cout << "channels - " << properties->channels() << endl;
cout << "length - " << minutes << ":" << setfill('0') << setw(2) << seconds << endl;
}
}
return 0;
}
QString FileHelper::extractGenericFeature(const QString &featureToExtract) const
{
QString feature;
TagLib::PropertyMap p = _file->properties();
if (p.contains(featureToExtract.toStdString().data())) {
TagLib::StringList list = p[featureToExtract.toStdString().data()];
if (!list.isEmpty()) {
feature = list.front().toCString(true);
}
}
return feature;
}
BlockResult Block::eval(const TagLib::FileRef& file)
{
TagLib::PropertyMap metadata = file.tag()->properties();
TagLib::StringList list;
std::stringstream ss;
// TODO: Needs to be refactored
// TODO: Add more
ss << file.audioProperties()->length();
list.append(ss.str());
metadata.insert("length", list);
list.clear();
ss.clear();
ss << file.audioProperties()->bitrate();
list.append(ss.str());
metadata.insert("bitrate", list);
list.clear();
ss.clear();
if (file.audioProperties()->channels() == 1) {
list.append("mono");
} else if (file.audioProperties()->channels() == 2) {
list.append("stereo");
} //TODO: Add more channels names
metadata.insert("channels", list);
list.clear();
ss.clear();
ss << file.audioProperties()->sampleRate();
list.append(ss.str());
metadata.insert("samplerate", list);
list.clear();
ss.clear();
list.append(file.file()->name());
metadata.insert("filename", list);
list.clear();
ss.clear();
return this->eval(metadata);
}
BlockResult Block::eval(const TagLib::PropertyMap& metadata)
{
BlockResult result;
std::sort(this->variables.begin(), this->variables.end() ,
[](Block::Variable a, Block::Variable b) {
return a.pos < b.pos;
});
std::sort(this->functions.begin(), this->functions.end() ,
[](Block::Function a, Block::Function b) {
return a.pos < b.pos;
});
result.success = false;
result.result = this->parsed_statement;
int offset = 0;
auto var_itr = this->variables.begin();
auto func_itr = this->functions.begin();
// Iterate over the Function and Variables lists in order of appearance in the raw statement
while (var_itr != this->variables.end() || func_itr != this->functions.end()) {
bool eval_var = true;
// Decide if the next item to be evaluated should be a variable or a function call
if (var_itr == this->variables.end()) {
eval_var = false;
} else if (func_itr != this->functions.end()) {
// Check the positions of the statements in the raw string
if ((*var_itr).raw_pos > (*func_itr).raw_pos) {
eval_var = false;
}
}
if (eval_var) {
if (metadata.contains((*var_itr).name)) {
// insert at the index of the variable
// TODO : alias some names, e.g. tacknumber -> track
std::string meta = metadata[(*var_itr).name].toString().toCString(false);
result.result.insert((*var_itr).pos + offset, meta);
offset += meta.length();
result.success = true;
}
} else {
if (FunctionMap.find((*func_itr).name) != FunctionMap.end()) {
// Call function
BlockResult func_result = FunctionMap[(*func_itr).name].eval(metadata, (*func_itr).args);
// OR'd to keep existing successes
result.success |= func_result.success;
result.result.insert((*func_itr).pos + offset, func_result.result);
offset += func_result.result.length();
} else {
// Throw unknown function exception
}
}
if (eval_var) {
var_itr++;
} else {
func_itr++;
}
}
/**
* Using this conversion from String to integer it will allow for the
* convention of:
* "c3po" → 0
* "4.8" → 4
* "-12" → -12
* "- 12" → 0
*/
std::stringstream ss(result.result);
ss >> result.value;
return result;
}
void MetadataReader::compute() {
if (!parameter("filename").isConfigured()) {
throw EssentiaException("MetadataReader: 'filename' parameter has not been configured");
}
#ifdef _WIN32
int len = MultiByteToWideChar(CP_UTF8, 0, _filename.c_str(), -1, NULL, 0);
wchar_t *buf = (wchar_t*)malloc(sizeof(wchar_t)*len);
memset(buf, 0, len);
MultiByteToWideChar(CP_UTF8, 0, _filename.c_str(), -1, buf, len);
TagLib::FileRef f(buf);
free(buf);
#else
TagLib::FileRef f(_filename.c_str());
#endif
Pool tagPool;
if (f.isNull()) {
// in case TagLib can't get metadata out of this file, try some basic PCM approach
int pcmSampleRate = 0;
int pcmChannels = 0;
int pcmBitrate = 0;
try {
pcmMetadata(_filename, pcmSampleRate, pcmChannels, pcmBitrate);
// works only for 16bit wavs/pcm; it should output incorrect value for
// 24bit or 32bit float files, therefore, print a warning
E_WARNING("MetadataReader: TagLib could not get metadata for this file. The output bitrate is estimated treating the input as 16-bit PCM, and therefore may be incorrect.");
}
catch (EssentiaException& e) {
if (parameter("failOnError").toBool())
throw EssentiaException("MetadataReader: File does not exist or does not seem to be of a supported filetype. ", e.what());
}
_title.get() = "";
_artist.get() = "";
_album.get() = "";
_comment.get() = "";
_genre.get() = "";
_track.get() = "";
_date.get() = "";
_tagPool.get() = tagPool;
_duration.get() = 0;
_bitrate.get() = pcmBitrate;
_sampleRate.get() = pcmSampleRate;
_channels.get() = pcmChannels;
return;
}
TagLib::PropertyMap tags = f.file()->properties();
_title.get() = formatString(tags["TITLE"]);
_artist.get() = formatString(tags["ARTIST"]);
_album.get() = formatString(tags["ALBUM"]);
_comment.get() = formatString(tags["COMMENT"]);
_genre.get() = formatString(tags["GENRE"]);
_track.get() = formatString(tags["TRACKNUMBER"]);
_date.get() = formatString(tags["DATE"]);
// populate tag pool
for(TagLib::PropertyMap::ConstIterator i = tags.begin(); i != tags.end(); ++i) {
string key = i->first.to8Bit(true);
if (!_filterMetadata || std::find(_filterMetadataTags.begin(), _filterMetadataTags.end(), key) != _filterMetadataTags.end()) {
// remove '.' chars which are used in Pool descriptor names as a separator
// convert to lowercase
std::replace(key.begin(), key.end(), '.', '_');
std::transform(key.begin(), key.end(), key.begin(), ::tolower);
key = _tagPoolName + "." + key;
for(TagLib::StringList::ConstIterator str = i->second.begin(); str != i->second.end(); ++str) {
tagPool.add(key, str->to8Bit(true));
}
}
}
_tagPool.get() = tagPool;
_duration.get() = f.audioProperties()->length();
_bitrate.get() = f.audioProperties()->bitrate();
_sampleRate.get() = f.audioProperties()->sampleRate();
_channels.get() = f.audioProperties()->channels();
// fix for taglib incorrectly returning the bitrate for wave files
string ext = toLower(_filename.substr(_filename.size()-3));
if (ext == "wav") {
_bitrate.get() = _bitrate.get() * 1024 / 1000;
}
}
