finished prototype of nodes providing a texture to a viewer

2019-07-13 03:13:59 -04:00
parent d76691a9ef
commit f2d11662c9
23 changed files with 383 additions and 68 deletions
@@ -0,0 +1,87 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2019 Olive 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 RENDERER_H
+#define RENDERER_H
+
+#include "node/node.h"
+#include "rendererthread.h"
+
+class RendererProcessor : public Node
+{
+  Q_OBJECT
+public:
+  /**
+   * @brief Renderer Constructor
+   *
+   * Constructing a Renderer object will not start any threads/backend on its own. Use Start() to do this and Stop()
+   * when the Renderer is about to be destroyed.
+   */
+  RendererProcessor(QObject* parent = nullptr);
+
+  virtual QString Name() override;
+  virtual QString Category() override;
+  virtual QString Description() override;
+
+  /**
+   * @brief Set parameters of the Renderer
+   *
+   * The Renderer owns the buffers that are used in the rendering process and this function sets the kind of buffers
+   * to use. The Renderer must be stopped when calling this function.
+   *
+   * @param width
+   *
+   * Buffer width
+   *
+   * @param height
+   *
+   * Buffer height
+   *
+   * @param format
+   *
+   * Buffer pixel format
+   */
+  void SetParameters(const int& width, const int& height, const olive::PixelFormat& format);
+
+  /**
+   * @brief Allocate and start the multithreaded backend
+   */
+  void Start();
+
+  /**
+   * @brief Terminate and deallocate the multithreaded backend
+   */
+  void Stop();
+
+  /**
+   * @brief Return current instance of a RenderThread (or nullptr if there is none)
+   *
+   * This function attempts a dynamic_cast on QThread::currentThread() to RendererThread, which will return nullptr if
+   * the cast fails (e.g. if this function is called from the main thread rather than a RendererThread).
+   */
+  static RendererThread* CurrentThread();
+
+private:
+  QVector<RendererThread*> threads_;
+
+  bool started_;
+};
+
+#endif // RENDERER_H