feat: add vaapi path for video wallpapers on generic gpus

Plugins/ZShell/Wallpaper/wallpapercache.cpp

@@ -0,0 +1,170 @@
+#include "wallpapercache.hpp"
+
+#include <QCryptographicHash>
+#include <QDir>
+#include <QFileInfo>
+#include <QImageReader>
+#include <QJsonDocument>
+#include <QJsonObject>
+#include <QSqlDatabase>
+#include <QSqlError>
+#include <QSqlQuery>
+#include <QThread>
+
+namespace ZShell::wallpaper {
+
+namespace {
+
+QString connectionName() {
+	return QStringLiteral("wallpaper-cache-%1")
+		.arg(quintptr(QThread::currentThreadId()));
+}
+
+QSqlDatabase openDatabase(const QString& databasePath) {
+	const QString connection = connectionName();
+
+	QSqlDatabase database =
+		QSqlDatabase::contains(connection)
+			? QSqlDatabase::database(connection, false)
+			: QSqlDatabase::addDatabase("QSQLITE", connection);
+
+	if (database.databaseName() != databasePath) {
+		if (database.isOpen()) database.close();
+		database.setDatabaseName(databasePath);
+	}
+
+	if (!database.isOpen() && !database.open()) return {};
+	return database;
+}
+
+} // namespace
+
+void WallpaperCache::setDbPath(const QString& path) {
+	std::lock_guard<std::mutex> lock(m_mtx);
+	m_dbPath = path;
+}
+
+QString WallpaperCache::dbPath() const {
+	std::lock_guard<std::mutex> lock(m_mtx);
+	return m_dbPath;
+}
+
+QByteArray WallpaperCache::cachedBlob(const QString& path) const {
+	if (path.isEmpty()) return {};
+
+	const QString databasePath = dbPath();
+	if (databasePath.isEmpty()) return {};
+
+	const QFileInfo info(path);
+
+	QSqlDatabase database = openDatabase(databasePath);
+	if (!database.isOpen()) return {};
+
+	QSqlQuery query(database);
+	query.prepare("SELECT cache, size, mtime FROM wallpapers WHERE path = ?");
+	query.addBindValue(info.absoluteFilePath());
+	if (!query.exec() || !query.next()) return {};
+
+	const QByteArray blob = query.value(0).toByteArray();
+	if (blob.isEmpty()) return {};
+
+	const qint64 mtime = info.lastModified().toMSecsSinceEpoch() / 1000;
+	if (query.value(1).toLongLong() != info.size() ||
+		query.value(2).toLongLong() != mtime) {
+		return {};
+	}
+
+	return blob;
+}
+
+QImage WallpaperCache::decodeImage(
+	const QString& path, const QSize& decodeSize) const {
+	if (path.isEmpty()) return {};
+
+	QImageReader probe(path);
+	const QSize source = probe.size();
+	QSize required = source.isEmpty() ? decodeSize : source;
+	if (!source.isEmpty() && !decodeSize.isEmpty()) {
+		const QSize cover =
+			source.scaled(decodeSize, Qt::KeepAspectRatioByExpanding);
+		if (cover.width() <= source.width() &&
+			cover.height() <= source.height())
+			required = cover;
+	}
+
+	const QByteArray blob = cachedBlob(path);
+	if (!blob.isEmpty()) {
+		QImage image = QImage::fromData(blob, "JPEG");
+		if (!image.isNull() && image.width() >= required.width() &&
+			image.height() >= required.height()) {
+			return image.convertToFormat(QImage::Format_RGBA8888);
+		}
+	}
+
+	QImageReader reader(path);
+	reader.setAutoTransform(true);
+
+	if (!decodeSize.isEmpty() && !source.isEmpty())
+		reader.setScaledSize(
+			source.scaled(decodeSize, Qt::KeepAspectRatioByExpanding));
+
+	QImage image = reader.read();
+	if (image.isNull()) return {};
+
+	return image.convertToFormat(QImage::Format_RGBA8888);
+}
+
+QByteArray WallpaperCache::posterBlob(const QString& path) const {
+	if (path.isEmpty()) return {};
+
+	const QString databasePath = dbPath();
+	if (databasePath.isEmpty()) return {};
+
+	const QFileInfo info(path);
+
+	QSqlDatabase database = openDatabase(databasePath);
+	if (!database.isOpen()) return {};
+
+	QSqlQuery query(database);
+	query.prepare("SELECT poster, size, mtime FROM wallpapers WHERE path = ?");
+	query.addBindValue(info.absoluteFilePath());
+	if (!query.exec() || !query.next()) return {};
+
+	const QByteArray blob = query.value(0).toByteArray();
+	if (blob.isEmpty()) return {};
+
+	const qint64 mtime = info.lastModified().toMSecsSinceEpoch() / 1000;
+	if (query.value(1).toLongLong() != info.size() ||
+		query.value(2).toLongLong() != mtime) {
+		return {};
+	}
+
+	return blob;
+}
+
+QVariantMap WallpaperCache::cropsForPath(const QString& path) const {
+	if (path.isEmpty()) return {};
+
+	const QString databasePath = dbPath();
+	if (databasePath.isEmpty()) return {};
+
+	const QFileInfo info(path);
+
+	QSqlDatabase database = openDatabase(databasePath);
+	if (!database.isOpen()) return {};
+
+	QSqlQuery query(database);
+	query.prepare("SELECT crop FROM wallpapers WHERE path = ?");
+	query.addBindValue(info.absoluteFilePath());
+	if (!query.exec() || !query.next()) return {};
+
+	const QByteArray json = query.value(0).toByteArray();
+	if (json.isEmpty()) return {};
+
+	const auto doc = QJsonDocument::fromJson(json);
+	if (!doc.isObject()) return {};
+
+	return doc.object().toVariantMap();
+}
+
+} // namespace ZShell::wallpaper