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Copy pathlibraryupdaterunnable.cpp
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638 lines (539 loc) · 28.6 KB
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/*
* Unplayer
* Copyright (C) 2015-2020 Alexey Rochev <equeim@gmail.com>
*
* 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 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "libraryupdaterunnable.h"
#include <algorithm>
#include <QDebug>
#include <QDir>
#include <QDirIterator>
#include <QElapsedTimer>
#include <QFileInfo>
#include <QMimeDatabase>
#include <QStringBuilder>
#include <QSqlError>
#include "librarytracksadder.h"
#include "libraryutils.h"
#include "mediaartutils.h"
#include "qscopeguard.h"
#include "settings.h"
#include "sqlutils.h"
#include "tagutils.h"
#include "utilsfunctions.h"
namespace unplayer
{
namespace
{
bool isNoMediaDirectory(const QString& directory, std::unordered_map<QString, bool>& noMediaDirectories)
{
{
const auto found(noMediaDirectories.find(directory));
if (found != noMediaDirectories.end()) {
return found->second;
}
}
const bool noMedia = QFileInfo(directory % QStringLiteral("/.nomedia")).isFile();
noMediaDirectories.insert({directory, noMedia});
return noMedia;
}
const QStringList prepareLibraryDirectories(QStringList&& dirs) {
if (!dirs.isEmpty()) {
for (QString& dir : dirs) {
if (!dir.endsWith(QLatin1Char('/'))) {
dir.push_back(QLatin1Char('/'));
}
}
dirs.removeDuplicates();
for (int i = dirs.size() - 1; i >= 0; --i) {
const QString& dir = dirs[i];
const auto found(std::find_if(dirs.begin(), dirs.end(), [&](const QString& d) {
return d != dir && dir.startsWith(d);
}));
if (found != dirs.end()) {
dirs.removeAt(i);
}
}
}
return std::move(dirs);
}
class LibraryUpdater final : public QObject
{
Q_OBJECT
public:
explicit LibraryUpdater(std::atomic_bool& cancelFlag);
void update();
private:
struct TrackInDb
{
int id;
bool embeddedMediaArtDeleted;
bool removeFromDatabase;
bool checkedIfDirectoryMediaArtChanged;
long long modificationTime;
};
struct TracksInDbResult
{
std::unordered_map<QString, TrackInDb> tracksInDb;
/**
* @brief Map of directory paths to their media art which are in db
*/
std::unordered_map<QString, QString> mediaArtDirectoriesInDbHash;
};
/**
* @brief Extracts information about existing tracks in db
* @return `TracksInDbResult` instance
*/
TracksInDbResult getTracksFromDatabase();
struct TrackToAdd
{
QString filePath;
QString directoryMediaArt;
bool foundDirectoryMediaArt;
fileutils::Extension extension;
};
struct ScanFilesystemResult
{
std::vector<TrackToAdd> tracksToAdd;
size_t tracksToRemoveFromDatabaseCount;
struct ChangedDirectoryMediaArt
{
QString newDirectoryMediaArt;
/**
* @brief Ids of tracks which need their directory media art to be updated
*/
std::vector<int> trackIds;
};
/**
* @brief Map of directory paths to `LibraryUpdater::ScanFilesystemResult::ChangedDirectoryMediaArt` instances
*/
std::unordered_map<QString, ChangedDirectoryMediaArt> changedDirectoriesMediaArt;
};
/**
* @brief Iterates over library directories, finds new tracks, determines whether existing ones changed or removed
* @param tracksInDbResult Return value from `getTracksFromDatabase()`
* @param embeddedMediaArtFiles Map of embedded media art files' MD5 hashes to their paths
* @return `ScanFilesystemResult` instance
*/
ScanFilesystemResult scanFilesystem(TracksInDbResult& tracksInDbResult,
std::unordered_map<QByteArray, QString>& embeddedMediaArtFiles);
/**
* @brief Checks if this directory has media art in db and it has changed
* @param directoryPath Path to directory
* @param newDirectoryMediaArt New media art for this directory
* @param directoriesMediaArtInDb Map of directory paths to their media art which are in db
* @param changedDirectoriesMediaArt Map of directory paths to `LibraryUpdater::ScanFilesystemResult::ChangedDirectoryMediaArt` instances
* @return Pointer to vector of existing track ids for this directory,
* or nullptr if this directory media art has not changed or is not in db
*/
static std::vector<int>* checkIfDirectoryMediaArtIsInDbAndChanged(const QString& directoryPath,
const QString& newDirectoryMediaArt,
std::unordered_map<QString, QString>& directoriesMediaArtInDb,
std::unordered_map<QString, ScanFilesystemResult::ChangedDirectoryMediaArt>& changedDrectoriesMediaArt);
bool isPathBlacklisted(const QString& path);
/**
* @brief Update tracks which directory media art was changed
* @param changedDirectoriesMediaArt Map of directory paths to `LibraryUpdater::ScanFilesystemResult::ChangedDirectoryMediaArt` instances
*/
void updateChangedDirectoriesMediaArt(std::unordered_map<QString, ScanFilesystemResult::ChangedDirectoryMediaArt> changedDirectoriesMediaArt);
int addTracks(std::vector<TrackToAdd> tracksToAdd,
std::unordered_map<QByteArray, QString>& embeddedMediaArtFiles);
std::atomic_bool& mCancel;
QStringList mLibraryDirectories;
QStringList mBlacklistedDirectories;
DatabaseConnectionGuard mDatabaseGuard{QLatin1String("unplayer_update")};
QSqlDatabase& mDb{mDatabaseGuard.db};
QMimeDatabase mMimeDb;
QElapsedTimer mStageTimer;
signals:
void stageChanged(unplayer::LibraryUtils::UpdateStage newStage);
void foundFilesChanged(int found);
void extractedFilesChanged(int extracted);
};
LibraryUpdater::LibraryUpdater(std::atomic_bool& cancelFlag)
: mCancel(cancelFlag)
{
}
void LibraryUpdater::update()
{
if (mCancel) {
return;
}
qInfo("Start updating database");
QElapsedTimer timer;
timer.start();
mStageTimer.start();
// Open database
if (!mDb.isOpen()) {
return;
}
const TransactionGuard transactionGuard(mDb);
// Create media art directory
if (!QDir().mkpath(MediaArtUtils::mediaArtDirectory())) {
qWarning() << "failed to create media art directory:" << MediaArtUtils::mediaArtDirectory();
}
if (!LibraryUtils::dropIndexes(mDb)) {
qWarning("Failed to drop indexes");
}
const auto indexesGuard(qScopeGuard([&] {
if (!LibraryUtils::createIndexes(mDb)) {
qWarning("Failed to create indexes");
}
}));
{
std::unordered_map<QByteArray, QString> embeddedMediaArtFiles(MediaArtUtils::getEmbeddedMediaArtFiles());
std::vector<TrackToAdd> tracksToAdd;
{
std::vector<int> tracksToRemove;
{
TracksInDbResult tracksInDbResult(getTracksFromDatabase());
auto& tracksInDb = tracksInDbResult.tracksInDb;
if (mCancel) {
return;
}
qInfo("Tracks in database: %zd (took %.3f s)", tracksInDb.size(), static_cast<double>(mStageTimer.restart()) / 1000.0);
qInfo("Start scanning filesystem");
emit stageChanged(LibraryUtils::ScanningStage);
// Library directories
mLibraryDirectories = prepareLibraryDirectories(Settings::instance()->libraryDirectories());
mBlacklistedDirectories = prepareLibraryDirectories(Settings::instance()->blacklistedDirectories());
ScanFilesystemResult scanFilesystemResult(scanFilesystem(tracksInDbResult, embeddedMediaArtFiles));
tracksToAdd = std::move(scanFilesystemResult.tracksToAdd);
if (mCancel) {
return;
}
if (scanFilesystemResult.tracksToRemoveFromDatabaseCount > 0) {
tracksToRemove.reserve(scanFilesystemResult.tracksToRemoveFromDatabaseCount);
for (const auto& i : tracksInDbResult.tracksInDb) {
const TrackInDb& track = i.second;
if (track.removeFromDatabase) {
tracksToRemove.push_back(track.id);
}
}
}
qInfo("End scanning filesystem (took %.3f s), need to extract tags from %zu files", static_cast<double>(mStageTimer.restart()) / 1000.0, tracksToAdd.size());
updateChangedDirectoriesMediaArt(std::move(scanFilesystemResult.changedDirectoriesMediaArt));
}
if (!tracksToRemove.empty()) {
qInfo("Tracks to remove: %zd", tracksToRemove.size());
if (LibraryUtils::removeTracksFromDbByIds(tracksToRemove, mDb, mCancel)) {
qInfo("Removed %zu tracks from database (took %.3f s)", tracksToRemove.size(), static_cast<double>(mStageTimer.restart()) / 1000.0);
}
tracksToRemove.clear();
}
}
if (mCancel) {
return;
}
if (!tracksToAdd.empty()) {
qInfo("Start extracting tags from files");
emit stageChanged(LibraryUtils::ExtractingStage);
const int count = addTracks(std::move(tracksToAdd), embeddedMediaArtFiles);
qInfo("Added %d tracks to database (took %.3f s)", count, static_cast<double>(mStageTimer.restart()) / 1000.0);
}
}
if (mCancel) {
return;
}
emit stageChanged(LibraryUtils::FinishingStage);
LibraryUtils::removeUnusedCategories(mDb);
LibraryUtils::removeUnusedMediaArt(mDb, mCancel);
qInfo("End updating database (last stage took %.3f s)", static_cast<double>(mStageTimer.elapsed()) / 1000.0);
qInfo("Total time: %.3f s", static_cast<double>(timer.elapsed()) / 1000.0);
}
LibraryUpdater::TracksInDbResult LibraryUpdater::getTracksFromDatabase()
{
TracksInDbResult result{};
std::unordered_map<QString, TrackInDb>& tracksInDb = result.tracksInDb;
std::unordered_map<QString, QString>& mediaArtDirectoriesInDbHash = result.mediaArtDirectoriesInDbHash;
// Extract tracks from database
std::unordered_map<QString, bool> embeddedMediaArtExistanceHash;
const auto checkExistanceOfEmbeddedMediaArt = [&](QString&& mediaArt) {
if (mediaArt.isEmpty()) {
return true;
}
const auto found(embeddedMediaArtExistanceHash.find(mediaArt));
if (found == embeddedMediaArtExistanceHash.end()) {
const QFileInfo fileInfo(mediaArt);
if (fileInfo.isFile() && fileInfo.isReadable()) {
embeddedMediaArtExistanceHash.insert({std::move(mediaArt), true});
return true;
}
embeddedMediaArtExistanceHash.insert({std::move(mediaArt), false});
return false;
}
return found->second;
};
enum
{
IdField,
FilePathField,
ModificationTimeField,
DirectoryMediaArtField,
EmbeddedMediaArtField
};
QSqlQuery query(mDb);
if (!query.exec(QLatin1String("SELECT id, filePath, modificationTime, directoryMediaArt, embeddedMediaArt FROM tracks ORDER BY id"))) {
qWarning() << "failed to get files from database" << query.lastError();
mCancel = true;
return {};
}
reserveFromQuery(tracksInDb, query);
while (query.next()) {
if (mCancel) {
return {};
}
const int id(query.value(IdField).toInt());
QString filePath(query.value(FilePathField).toString());
mediaArtDirectoriesInDbHash.insert({QFileInfo(filePath).path(), query.value(DirectoryMediaArtField).toString()});
tracksInDb.emplace(std::move(filePath), TrackInDb{id,
!checkExistanceOfEmbeddedMediaArt(query.value(EmbeddedMediaArtField).toString()),
true,
false,
query.value(ModificationTimeField).toLongLong()});
}
return result;
}
LibraryUpdater::ScanFilesystemResult LibraryUpdater::scanFilesystem(LibraryUpdater::TracksInDbResult& tracksInDbResult,
std::unordered_map<QByteArray, QString>& embeddedMediaArtFiles)
{
ScanFilesystemResult result{};
std::vector<TrackToAdd>& tracksToAdd = result.tracksToAdd;
auto& changedDirectoriesMediaArt = result.changedDirectoriesMediaArt;
auto& tracksInDb = tracksInDbResult.tracksInDb;
const auto tracksInDbEnd(tracksInDb.end());
auto& directoriesMediaArtInDb = tracksInDbResult.mediaArtDirectoriesInDbHash;
result.tracksToRemoveFromDatabaseCount = tracksInDb.size();
std::unordered_map<QString, bool> noMediaDirectoriesCache;
std::unordered_map<QString, QString> directoriesMediaArt;
QString currentDirectory;
QString currentDirectoryMediaArt;
bool foundCurrentDirectoryMediaArt = false;
std::vector<int>* currentDirectoryChangedMediaArtTrackIds = nullptr;
const auto onFoundCurrentDirectoryMediaArt = [&](const QString& directoryMediaArt) {
currentDirectoryMediaArt = directoryMediaArt;
foundCurrentDirectoryMediaArt = true;
currentDirectoryChangedMediaArtTrackIds = checkIfDirectoryMediaArtIsInDbAndChanged(currentDirectory, currentDirectoryMediaArt, directoriesMediaArtInDb, changedDirectoriesMediaArt);
};
for (const QString& topLevelDirectory : mLibraryDirectories) {
if (mCancel) {
return result;
}
QDirIterator iterator(topLevelDirectory, QDir::Files | QDir::Readable, QDirIterator::Subdirectories | QDirIterator::FollowSymlinks);
while (iterator.hasNext()) {
if (mCancel) {
return result;
}
QString filePath(iterator.next());
const QFileInfo fileInfo(iterator.fileInfo());
{
const QString directoryPath(fileInfo.path());
if (directoryPath != currentDirectory) {
// Entered new directory
currentDirectory = directoryPath;
if (isNoMediaDirectory(currentDirectory, noMediaDirectoriesCache)) {
continue;
}
if (isPathBlacklisted(fileInfo.filePath())) {
continue;
}
currentDirectoryChangedMediaArtTrackIds = nullptr;
const auto foundMediaArt(directoriesMediaArt.find(currentDirectory));
if (foundMediaArt != directoriesMediaArt.end()) {
onFoundCurrentDirectoryMediaArt(foundMediaArt->second);
} else {
currentDirectoryMediaArt.clear();
foundCurrentDirectoryMediaArt = false;
}
}
}
const QString suffixLowered(fileInfo.suffix().toLower());
const fileutils::Extension extension = fileutils::extensionFromSuffixLowered(suffixLowered);
if (extension == fileutils::Extension::Other) {
if (!foundCurrentDirectoryMediaArt && MediaArtUtils::isMediaArtFileSuffixLowered(fileInfo, suffixLowered)) {
directoriesMediaArt.emplace(currentDirectory, filePath);
onFoundCurrentDirectoryMediaArt(filePath);
}
continue;
}
const auto foundInDb(tracksInDb.find(filePath));
if (foundInDb == tracksInDbEnd) {
// File is not in database
tracksToAdd.push_back({std::move(filePath), currentDirectoryMediaArt, foundCurrentDirectoryMediaArt, extension});
emit foundFilesChanged(static_cast<int>(tracksToAdd.size()));
} else {
// File is in database
TrackInDb& file = foundInDb->second;
const long long modificationTime = getLastModifiedTime(filePath);
if (modificationTime == file.modificationTime) {
// File has not changed
file.removeFromDatabase = false;
--result.tracksToRemoveFromDatabaseCount;
if (file.embeddedMediaArtDeleted) {
const QString embeddedMediaArt(MediaArtUtils::saveEmbeddedMediaArt(tagutils::getTackMediaArtData(filePath, fileutils::extensionFromSuffix(fileInfo.suffix())).value_or(QByteArray()),
embeddedMediaArtFiles,
mMimeDb));
QSqlQuery query(mDb);
query.prepare(QStringLiteral("UPDATE tracks SET embeddedMediaArt = ? WHERE id = ?"));
query.addBindValue(nullIfEmpty(embeddedMediaArt));
query.addBindValue(file.id);
if (!query.exec()) {
qWarning() << query.lastError();
}
}
if (foundCurrentDirectoryMediaArt) {
file.checkedIfDirectoryMediaArtChanged = true;
if (currentDirectoryChangedMediaArtTrackIds) {
currentDirectoryChangedMediaArtTrackIds->push_back(file.id);
}
}
} else {
// File has changed
tracksToAdd.push_back({std::move(filePath), currentDirectoryMediaArt, foundCurrentDirectoryMediaArt, extension});
emit foundFilesChanged(static_cast<int>(tracksToAdd.size()));
}
}
}
}
// Process directory media art for tracks which didn't have it yet at the moment of iteration
const auto directoriesMediaArtEnd(directoriesMediaArt.end());
for (auto& i : tracksInDb) {
TrackInDb& trackInDb = i.second;
if (!trackInDb.removeFromDatabase && !trackInDb.checkedIfDirectoryMediaArtChanged) {
const QString directoryPath(QFileInfo(i.first).path());
std::vector<int>* trackIds = nullptr;
const auto foundMediaArt(directoriesMediaArt.find(directoryPath));
if (foundMediaArt != directoriesMediaArtEnd) {
trackIds = checkIfDirectoryMediaArtIsInDbAndChanged(directoryPath, foundMediaArt->second, directoriesMediaArtInDb, changedDirectoriesMediaArt);
} else {
trackIds = checkIfDirectoryMediaArtIsInDbAndChanged(directoryPath, QString(), directoriesMediaArtInDb, changedDirectoriesMediaArt);
}
if (trackIds) {
trackIds->push_back(trackInDb.id);
}
trackInDb.checkedIfDirectoryMediaArtChanged = true;
}
}
for (TrackToAdd& trackToAdd : tracksToAdd) {
if (!trackToAdd.foundDirectoryMediaArt) {
const auto foundMediaArt(directoriesMediaArt.find(QFileInfo(trackToAdd.filePath).path()));
if (foundMediaArt != directoriesMediaArtEnd) {
trackToAdd.directoryMediaArt = foundMediaArt->second;
}
trackToAdd.foundDirectoryMediaArt = true;
}
}
return result;
}
std::vector<int>* LibraryUpdater::checkIfDirectoryMediaArtIsInDbAndChanged(const QString& directoryPath,
const QString& newDirectoryMediaArt,
std::unordered_map<QString, QString>& directoriesMediaArtInDb,
std::unordered_map<QString, ScanFilesystemResult::ChangedDirectoryMediaArt>& changedDirectoriesMediaArt)
{
const auto directoryMediaArtInDb(directoriesMediaArtInDb.find(directoryPath));
if (directoryMediaArtInDb != directoriesMediaArtInDb.end()) {
// This directory is in db and we haven't checked it yet
if (directoryMediaArtInDb->second != newDirectoryMediaArt) {
// Media art has changed
const auto inserted(changedDirectoriesMediaArt.emplace(directoryPath, ScanFilesystemResult::ChangedDirectoryMediaArt{newDirectoryMediaArt, {}}));
if (inserted.second) {
return &inserted.first->second.trackIds;
}
}
// Remove it from db map
directoriesMediaArtInDb.erase(directoryMediaArtInDb);
} else {
// This directory is not in db or we already checked it
// See if its media art changed
const auto changedDirectoryMediaArt(changedDirectoriesMediaArt.find(directoryPath));
if (changedDirectoryMediaArt != changedDirectoriesMediaArt.end()) {
// Media art has changed
return &changedDirectoryMediaArt->second.trackIds;
}
}
return nullptr;
}
bool LibraryUpdater::isPathBlacklisted(const QString& path)
{
for (const QString& directory : mBlacklistedDirectories) {
if (path.startsWith(directory)) {
return true;
}
}
return false;
}
void LibraryUpdater::updateChangedDirectoriesMediaArt(std::unordered_map<QString, LibraryUpdater::ScanFilesystemResult::ChangedDirectoryMediaArt> changedDirectoriesMediaArt)
{
if (!changedDirectoriesMediaArt.empty()) {
qInfo("Update changed media art");
QSqlQuery query(mDb);
for (const auto& i : changedDirectoriesMediaArt) {
batchedCount(i.second.trackIds.size(), LibraryUtils::maxDbVariableCount, [&](size_t first, size_t count) {
query.prepare(QLatin1String("UPDATE tracks SET directoryMediaArt = ? WHERE id IN (") % makeInStringFromIds(i.second.trackIds, first, count));
query.addBindValue(nullIfEmpty(i.second.newDirectoryMediaArt));
if (!query.exec()) {
qWarning() << query.lastError();
}
});
}
}
}
int LibraryUpdater::addTracks(std::vector<LibraryUpdater::TrackToAdd> tracksToAdd,
std::unordered_map<QByteArray, QString>& embeddedMediaArtFiles)
{
int count = 0;
LibraryTracksAdder adder(mDb);
for (TrackToAdd& track : tracksToAdd) {
if (mCancel) {
return count;
}
auto trackInfo = tagutils::getTrackInfo(track.filePath, track.extension);
if (trackInfo && fileutils::isAudioCodecSupported(trackInfo->audioCodec)) {
++count;
if (trackInfo->title.isEmpty()) {
trackInfo->title = QFileInfo(track.filePath).fileName();
}
adder.addTrackToDatabase(track.filePath,
getLastModifiedTime(track.filePath),
*trackInfo,
track.directoryMediaArt,
MediaArtUtils::saveEmbeddedMediaArt(trackInfo->mediaArtData,
embeddedMediaArtFiles,
mMimeDb));
if ((count % 100) == 0) {
qInfo("Extracted tags from %d of %zu files (%.3f s elapsed)", count, tracksToAdd.size(), static_cast<double>(mStageTimer.elapsed()) / 1000.0);
}
emit extractedFilesChanged(count);
}
}
return count;
}
}
void LibraryUpdateRunnable::cancel()
{
qInfo("Cancel updating database");
mCancelFlag = true;
}
void LibraryUpdateRunnable::run()
{
LibraryUpdater updater(mCancelFlag);
QObject::connect(&updater, &LibraryUpdater::stageChanged, this, &LibraryUpdateRunnable::stageChanged);
QObject::connect(&updater, &LibraryUpdater::foundFilesChanged, this, &LibraryUpdateRunnable::foundFilesChanged);
QObject::connect(&updater, &LibraryUpdater::extractedFilesChanged, this, &LibraryUpdateRunnable::extractedFilesChanged);
updater.update();
emit finished();
}
}
#include "libraryupdaterunnable.moc"