Implement proxy media workflow

2026-07-13 10:19:29 +08:00
parent 9c1fba4932
commit 8ae8e3a159
18 changed files with 1671 additions and 5 deletions
@@ -0,0 +1,124 @@
+/*
+ * Oak Video Editor - Non-Linear Video Editor
+ * Copyright (C) 2026 Oak Team
+ *
+ * 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/>.
+ */
+
+#ifndef PROXYMANAGER_H
+#define PROXYMANAGER_H
+
+#include <QMutex>
+#include <QObject>
+#include <QString>
+#include <QVector>
+
+#include "task/task.h"
+
+namespace olive
+{
+
+class ProxyTask;
+
+class ProxyManager : public QObject {
+	Q_OBJECT
+public:
+	static void CreateInstance()
+	{
+		if (!instance_) {
+			instance_ = new ProxyManager();
+		}
+	}
+
+	static void DestroyInstance()
+	{
+		delete instance_;
+		instance_ = nullptr;
+	}
+
+	static ProxyManager *instance()
+	{
+		return instance_;
+	}
+
+	enum ProxyState {
+		kProxyMissing,
+		kProxyGenerating,
+		kProxyReady,
+		kProxyFailed
+	};
+
+	struct ProxyParams {
+		int width = 1280;
+		int height = 720;
+		int version = 1;
+		QString extension = QStringLiteral("mp4");
+	};
+
+	struct Proxy {
+		ProxyState state = kProxyMissing;
+		QString filename;
+		ProxyTask *task = nullptr;
+	};
+
+	static QString GetProxyDirectory(const QString &cache_path);
+
+	static QString GetProxyFilename(const QString &cache_path,
+									const QString &source_filename,
+									int stream_index,
+									const ProxyParams &params);
+
+	static QString GetWorkingProxyFilename(const QString &proxy_filename);
+
+	static ProxyState GetProxyState(const QString &proxy_filename);
+
+	static QString ProxyStateToString(ProxyState state);
+
+	static ProxyState ProxyStateFromString(const QString &state);
+
+	Proxy GetOrStartProxy(const QString &cache_path,
+						  const QString &source_filename,
+						  int stream_index,
+						  const ProxyParams &params);
+
+signals:
+	void ProxyReady(const QString &source_filename, int stream_index,
+					const QString &proxy_filename);
+	void ProxyFinished(const QString &source_filename, int stream_index,
+					   const QString &proxy_filename, ProxyState state);
+
+private:
+	ProxyManager() = default;
+
+	static ProxyManager *instance_;
+
+	struct ProxyData {
+		QString source_filename;
+		int stream_index = -1;
+		ProxyParams params;
+		ProxyTask *task = nullptr;
+		QString working_filename;
+		QString finished_filename;
+	};
+
+	QMutex mutex_;
+	QVector<ProxyData> proxying_;
+
+private slots:
+	void ProxyTaskFinished(Task *task, bool succeeded);
+};
+
+}
+
+#endif // PROXYMANAGER_H